RISK FACTORS

Risks Related to Our Business and Industry

We have experienced fluctuation in growth in recent periods, and our historical growth rates may not be indicative of our future growth.

We have experienced fluctuation in growth in recent periods. We may not be able to sustain our historical growth rates, or at all. You should not consider our historical growth in gross billing and net revenues as indicative of our future performance. For example, while our gross billing and net revenues increased in 2016 compared to 2015, our gross billing decreased in the nine months ended September 30, 2017 compared to the same period in 2016 due to a decrease in gross billing from other solutions as we optimized our client base for other solutions to focus on profitability and liquidity. In future periods, our gross billing and net revenues could further decline or grow more slowly than we expect and the client base optimization may not achieve the benefits as we expected. We believe our business, prospects and results of operations depend on a number of factors, some of which are described in more details in this section, including our ability to:

We cannot assure you that we will be able to successfully accomplish any of these objectives.

We may not be successful in implementing our mobile strategies, which could materially and adversely affect our results of operations.

Our recent growth was in part driven by our expansion since 2014 into mobile channels to identify, engage and convert mobile audience. Our limited operating history in mobile channels may make it difficult to evaluate our current business and future prospects, which will be adversely affected if we fail to successfully maintain and enhance our mobile capabilities. To deliver, maintain and enhance our mobile capabilities, it is important that we further integrate with a wider range of mobile technologies, systems, networks and standards that we do not

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control. We may not be successful in developing solutions that operate effectively with these technologies, systems, networks or standards. Any of these could have a material adverse effect on our business, prospects and results of operations.

While marketing via non-mobile online channels has been established for several years, marketing via mobile channels, in particular via mobile apps, is a relatively new phenomenon. We have experienced and expect to continue to face more significant competition for our mobile audience solutions. In addition, in light of the rising demand for marketing via mobile apps, mobile app publishers, especially popular mobile app publishers tend to command stronger bargaining power compared to their non-mobile app publisher counterparts. All of these have resulted in a downward pricing pressure on, and increased media costs for, our mobile audience solutions. While net revenues from our mobile audience solutions increased significantly, which amounted to US$11.9 million, US$57.8 million and US$67.3 million in 2015, 2016 and the nine months ended September 30, 2017, respectively, gross margins for our mobile audience solutions remained relatively low and decreased during these periods, which contributed to the decrease in our overall gross profit margin from 47.1% in 2015 to 36.0% in 2016 and further to 23.2% in the nine months ended September 30, 2017. As we continue to prioritize the execution of our mobile strategy and face increasing competition and pricing pressure for our mobile audience solutions, our profit margin could be materially and adversely affected.

We have incurred net losses in the past and may not achieve profitability in the future.

We generated net losses of US$39.7 million in 2015, US$27.3 million in 2016, US$8.4 million in the nine months ended September 30, 2016 and US$15.9 million in the nine months ended September 30, 2017. As of September 30, 2017, we had an accumulated deficit of US$140.3 million. We will need to generate increased revenue levels in future periods to become profitable, and, even if we do, we may not be able to improve our profitability as we intend to continue to expend significant funds to grow our marketing and sales operations, develop and enhance our data analytic capabilities, scale our data center infrastructure and services capabilities and expand into new market segments. Our efforts to grow our business may be more costly than we expect, and we may not be able to increase our revenue enough to offset our operating expenses. We may incur significant losses in the future for a number of reasons, including the other risks described in this prospectus, and unforeseen expenses, difficulties, complications and delays and other unknown events. If we are unable to achieve or sustain profitability, the market price of our ADSs may significantly decrease.

Our net revenues, net revenues as a percentage of gross billing, gross profit margin and the comparability of our financial results may be affected by the relative percentage of gross billing recognized as net revenues under the gross and net models.

We derive revenue from three sources and report them on either the net or gross basis. (i) Revenue from incentives earned from the website publisher for which we act as sales agent for its content distribution opportunities, or the sales agency arrangement; and (ii) revenue from performing cost-plus marketing campaigns are reported on the net basis; and (iii) revenue from performing specified actions marketing campaigns (i.e., a CPM, CPC, CPA, CPS, CPL or ROI basis) is reported on the gross basis. Please see “Management’s Discussion and Analysis of Financial Condition and Results of Operations — Key Operating and Financial Metrics — Net Revenues” for more details. The gross profit margins for our sales agency arrangement and cost-plus marketing campaigns are higher than that for our specified action marketing campaigns as cost of revenues for our sales agency arrangement and cost-plus marketing campaigns does not include media cost. Consequently, an increase in the percentage of gross billing recognized as net revenues from performing specified actions marketing campaigns will have a positive impact on our net revenues and a negative impact on gross profit margin. On the other hand, an increase in the percentage of gross billing recognized as net revenues from our sales agency arrangement and from performing cost-plus marketing campaigns will have a negative impact on our net revenues and a positive impact on gross profit margin. As the relative percentage of gross billing from incentives earned from the website publisher under our sales agency arrangement and from performing cost-plus marketing campaigns, on the one hand, and from performing specified actions marketing campaigns on the other hand,

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changes from time to time, the relative percentage of gross billing recognized as net revenues on the gross basis and net basis also fluctuates, which would consequently impact our net revenues and gross profit margin. Our mobile audience solutions on one hand, and other solutions, on the other hand, each represent a mixture of revenue recognized on gross basis and on net basis and the proportion of each fluctuates from period to period. Therefore our net revenues, net revenues as a percentage of gross billing, gross profit margin and the comparability of our financial results in one period to another may be affected by the relative percentage of gross billing recognized as net revenues on the gross basis and net basis. The relative percentage of gross billing recognized as net revenues on the gross basis and net basis is in turn, affected by a variety of factors, in particular, the terms of the arrangements with our clients, including whether to conduct their marketing campaigns on a specified-action (i.e., gross) or cost-plus (i.e., net) basis in a particular period, which depends on clients’ needs and goals.

Failure to retain existing clients or attract new ones could adversely impact our business and results of operations.

We do not have long-term marketing campaign contracts with clients, and a majority of our marketing campaign contracts are for a term of one year or shorter. Our clients, referring to entities which enter into marketing campaign contracts with us and incur marketing spend during the relevant period and which include direct marketer and marketing agencies, are not obligated to use our platform on an exclusive basis and they generally use multiple providers to manage their marketing spend. Accordingly, we must convince our clients to use our platform, increase their usage and spend a larger share of their online marketing budgets with us, and do so on an on-going basis.

Our ability to achieve renewals or marketing campaign contracts and new sales depends on many factors, some of which are out of our control, including:

Therefore, we cannot assure you that clients that have generated marketing spend on our platform in the past will continue to spend at similar levels or that they will continue to use our platform at all. We may not be able to replace clients which decrease or cease their usage of our platform with new clients that spend similarly on our platform. We have relied on a limited number of clients to generate a significant portion of our revenues. For example, in 2016, we had two clients that each contributed to more than 10% of our net revenues, including a marketer in the entertainment industry which contributed to 18% of our net revenues and a marketer in the e-commerce industry which contributed to 11% of our net revenues. In the nine months ended September 30, 2017, we had one client that contributed to more than 10% of our net revenues, which was a marketer in the entertainment industry and contributed to 11% of our net revenues.

In addition, we started a comprehensive review of the client base for other solutions in 2016 to focus on profitability and liquidity. For example, we terminated relationship with certain clients for our other solutions as

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they had relatively long account receivable cycles and yielded relatively low operating profit margins. Some of these clients were large marketers and had individually accounted for more than 5% of our annual gross billing historically. As a result, gross billing from our other solutions decreased by 9.5% from US$136.9 million in 2015 to US$123.9 million in 2016 and by 40.1% from US$95.9 million in the nine months ended September 30, 2016 to US$57.4 million in the same period in 2017. In addition, the total number of our clients decreased by 10.1% from 2,644 in 2015 to 2,376 in 2016 notwithstanding our full year consolidation of OptAim’s results of operations in 2016 compared to our consolidation of OptAim’s results of operations only for the period from July 24 to December 31 in 2015, and by 26.6% from 2,079 in the nine months ended September 30, 2016 to 1,528 in the same period in 2017.

If our existing clients do not continue to use or increase their use of our platform, or if we are unable to attract sufficient marketing spend on our platform from new clients, our business and results of operations could be materially and adversely affected.

Loss of any marketing agency client may materially and adversely affect our business and results of operations.

We engage third-party marketing agencies to help source and serve some of our marketers. In 2016, we had over 2,000 clients, including over 1,800 direct marketer clients and over 500 marketing agency clients, which represented over 1,100 end marketers and a significant portion of our gross billing and net revenues. In the nine months ended September 30, 2017, we had over 1,500 clients, including over 1,100 direct marketer clients and over 400 agency clients, which represented over 1,200 end marketers and a significant portion of our gross billing and net revenues. We do not have exclusive business arrangement with these marketing agencies. If we lose any marketing agency, we risk losing business from end marketers represented by that agency. In addition, some marketing agencies have their own business arrangements with content distribution channels and can directly connect marketers with such channels. Our business may suffer to the extent that marketing agencies and content distribution channels purchase and sell content distribution opportunities directly from one another or through intermediaries other than us. Loss of marketing agencies as our clients could materially and adversely affect our business and results of operations.

Furthermore, our contractual arrangements with marketing agency clients do not provide us with control or oversight over their day-to-day business activities. If any of our marketing agency clients engage in activities that violate laws and regulations, our reputation could be harmed and our business and results of operations could be materially and adversely affected.

Loss of any content distribution channel and changes in the contract terms with any content distribution channel may materially and adversely affect our business and results of operations.

Our consistent access to attractive content distribution opportunities is crucial to our business. Our content distribution channels are concentrated and primarily include online and mobile publishers, major search engines and ad exchanges, including those owned or operated by Tencent, Baidu, Google and Alibaba. Media costs for content distribution opportunities on Tencent, Baidu, Google and Alibaba channels in aggregate accounted for 84.0%, 81.6% and 88.6% of our media costs in 2015, 2016 and the nine months ended September 30, 2017, respectively. Media costs for content distribution opportunities on our largest channel partner in each of 2015, 2016 and the nine months ended September 30, 2017 accounted for 55.0%, 42.2% and 61.1% of our media costs, respectively, during the relevant periods, and media costs for content distribution opportunities on our second largest channel partner in each of 2015, 2016 and the nine months ended September 30, 2017 accounted for 22.6%, 36.1% and 25.7% of our media costs, respectively, during the relevant periods. We currently do not own or control any content distribution channels in China. In addition, our contracts with content distribution channels are generally for a period of one year and do not impose long-term obligations requiring them to make their content distribution opportunities available to us on reasonable terms or at all. The loss of access to content distribution opportunities from one of those companies would negatively impact our ability to help marketers reach their audience.

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Our ability to source content distribution opportunities from content distribution channels depends in part on our ability to continuously generate sufficient marketing spend from our clients on these channels. Under some of our contracts, content distribution channels may terminate the contracts during their terms if we do not meet the minimum marketing spend requirements in the contracts.

In addition, we may not be able to negotiate favorable or acceptable terms once the contracts expire. For example, the written contract with the content distribution channel under our sales agency arrangement expired on December 31, 2016 and as of the date of this prospectus, we have not yet executed and are negotiating a new written contract with this content distribution channel. The new contract may require us to pay a significant deposit, which will be forfeited in whole or in part depending on the extent to which we meet the annual minimum marketing spend threshold set out in the contract. Based on our historical marketing spend level on this distribution channel, we expect we will not meet the proposed minimum marketing spend threshold and therefore we expect some of our deposit with this content distribution channel will be forfeited if we enter into this new contract, which will have a material adverse impact on our financial conditions and results of operations. In addition, the new contract may impose quarterly minimum marketing spend threshold and if we fail to meet such threshold for some consecutive quarters, the content distribution channel may terminate the contract. Net revenues from this content distribution channel under our sales agency arrangement were US$7.1 million and US$7.9 million in 2015 and 2016, and US$6.6 million and US$6.0 million for the nine months ended September 30, 2016 and 2017, representing 10.9%, 8.3%, 9.4% and 7.0% of our total net revenues for the respective periods. As the contract is still being negotiated, there is no assurance that we will be able to execute the contract with terms favorable or acceptable to us or at all, which will have a material adverse impact on our financial conditions and results of operations.

Furthermore, our contracts with content distribution channels generally provide for certain rebates or incentives, generally calculated as a percentage of marketing spend, that we are entitled to should the market spending during the terms exceed the specified thresholds. Under some of our contracts, content distribution channels offer staggered levels of rebates or incentives to us depending on the amount of marketing spend we achieve during the period. See “Management’s Discussion and Analysis of Financial Condition and Results of Operations — Key Operating and Financial Metrics — Net Revenues,” “— Critical Accounting Policies — Revenue recognition — Sales Agent” and “— Critical Accounting Policies — Rebates” for a description of the accounting treatment of rebates or incentives that we receive from content distribution channels. If we are unable to meet the anticipated level of marketing spend with any content distribution partner, we may experience a material adverse impact on our financial conditions and results of operations and it may affect our overall relationship with the content distribution partner. If these or any other content distribution channel were to change their rebate or incentive programs or to cease doing business with us for any reason, our financial results would be materially adversely affected.

Our platform is connected with some of our content distribution channels’ platforms through application programming interfaces, or API, such as the Baidu API and Google API. We are subject to standard API terms of use of such content distribution channels, which govern the use and distribution of data from them. Our business significantly depends on access to these APIs, particularly the Baidu API and Google API on commercially reasonable terms. Our business would be harmed if any of these content distribution channels discontinue, limit or place any additional restrictions on our access to their platforms, modify their terms of use or other policies, or charge API license fees for API access. In particular, content distribution channels update their API terms of use from time to time and new versions of these terms could impose additional restrictions on us and require us to modify our software to accommodate these changes. Any of these outcomes could cause demand for our solutions to decrease, our research and development costs to increase, and as a result, our business and results of operations could suffer.

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The independent online marketing technology market is highly fragmented and intensely competitive. In addition, independent online marketing technology platforms face competitive pressure from well-established internet companies, marketing agencies and traditional media.

China’s independent online marketing technology market is highly competitive, fragmented and rapidly changing. With the introduction of new technologies and the influx of new entrants, we expect competition to continue and intensify, which could harm our ability to increase revenue and attain or sustain profitability. We believe the principal competitive factors in this industry include:

In addition, independent online marketing technology platforms face competitive pressure from large and well-established internet companies, such as Alibaba, Baidu, Tencent and Google, which have established stronger and broader presence across the online marketing ecosystem and have significantly more financial, technical, marketing and other resources, more extensive client base, and longer operating histories and greater brand recognition than we do. These companies have access to user information by virtue of their popular consumer-oriented websites and mobile apps, and have the technology designed for use in conjunction with the types of user information collected from their websites and mobile apps. These companies may also leverage their positions to make changes to their systems, platforms, exchanges, networks or other products or services that could be harmful to our business and results of operations. While we believe that we do not directly compete with these large and well-established internet companies as we promote their content distribution opportunities or purchase their content distribution opportunities in the ordinary course of our business in connection with our execution of marketing campaigns, and these companies generally do not provide integrated online marketing solutions the way we do, they are major players in the online marketing technology industry as they provide online marketing technology and offer services and offer solutions that help marketers achieve one or more aspects of their marketing goals in one or more phases of their online marketing cycle. In addition, these large and well-established companies control content distribution channels and would directly compete with us should we vertically expand our business to own or operate content distribution channels in the future. Further, some of these companies are, or may also become, our content distribution channels and may enter into other types of strategic arrangements with us. For example, we generally enter into annual framework agreements with content distribution channel partners, including Baidu and Tencent, to purchase or promote their content distribution opportunities. See “Business — Our Content Distribution Channels”. Competitive pressure may incentivize them to cease their partnership with us. See “— Loss of any content distribution channel may materially and adversely affect our business and results of operations.” Online marketing technology platforms also face competition from marketing agencies, who may have their own relationships with content distribution channels and can directly connect marketers with such channels. Furthermore, online marketing technology platforms continue to compete with traditional media including direct marketing, television, radio, cable and print advertising companies.

New technologies and methods of online marketing present an evolving competitive challenge, as market participants upgrade or expand their service offerings to capture more marketing spend from marketers. In

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addition to existing competitors and their existing service offerings, we expect to face competition from new entrants to the online marketing technology industry and new service offerings from existing competitors. If existing or new companies develop, market or resell competitive high-value marketing technology solutions, acquire one of our competitors or strategic partners, form a strategic alliance or enter into exclusivity arrangement with one of our competitors or strategic partners, our ability to compete effectively could be significantly compromised and our business, results of operations and prospects could be materially and adversely affected.

If online marketing technology solutions do not achieve widespread market acceptance, our business, growth prospects and results of operations would be materially and adversely affected.

The market for online marketing technology solutions such as ours is evolving in China and these solutions may not achieve or sustain high levels of demand and market acceptance as we expect. While marketing via search engines or display channels has been established for several years, marketing via new digital channels such as mobile and social media is not as well established. The future growth of our business could be constrained by both the level of acceptance and expansion of emerging online marketing channels, as well as the continued use and growth of existing channels. Even if these channels become widely adopted, marketers and agencies may not be familiar with and make significant investments in, solutions such as ours that help them manage their online marketing across channels and devices. In addition, some of our solutions are delivered as software-as-a-service, or SaaS, offerings, which are less mature or common in China, and the pace of transition to SaaS business may be slower among marketers with heightened data security concerns or general demand for highly customizable application software. The acceptance of our solutions delivered as SaaS offerings will depend to a substantial extent on the education of our clients on the SaaS offerings and the widespread adoption of SaaS solutions in general, and we cannot be certain that the trend of adoption of such solutions will continue in the future. Therefore, it is difficult to predict the demand for our platform or the future growth rate and size of the market for online marketing technology solutions.

Expansion of the market for online marketing technology solutions depends on a number of factors, including the growth of new digital channels such as mobile and social media and the cost, as well as the performance and perceived value associated with online marketing technology solutions. If online marketing technology solutions do not achieve widespread acceptance, or there is a reduction in demand for online marketing caused by weakening economic conditions, decreases in corporate spending, technological challenges, data security or privacy concerns, governmental regulation, competing technologies and solutions or otherwise, our business, growth prospects and results of operations will be materially and adversely affected.

If our algorithms and data engines for assessing and predicting potential audience interaction with marketing content are flawed or ineffective, or if our platform fails to otherwise function properly, our reputation and market share would be materially and adversely affected.

Our ability to attract marketers to, and build trust in, our platform is significantly dependent on our ability to effectively assess and predict audience interest in, and therefore interaction with, relevant marketing content. We utilize our proprietary algorithms and data engines to track, process and analyze internet user data, forecast probability and nature of internet users’ potential engagement with a given marketing message, create and tailor the marketing message to specific user interest, and execute marketing campaigns based on parameters specified by our clients. Our proprietary algorithms and data engines take into account multiple kinds and sources of data, including data on users’ interest, intent, E-commerce and offline purchase behavior, social data, demographic data and campaign performance data, which we track using our proprietary tracking tools, from our marketers, publishers and ad exchanges in connection with marketing campaigns, and from collaboration with selected third-party data partners. The data we collect may not be relevant to all industries, and for certain industries, we may not have sufficient user data to ensure that our algorithms and data engines would work effectively. Furthermore, we generally do not verify the data we gather, which may be subject to fraud or are otherwise inaccurate. Even if such data are accurate, they may become irrelevant or outdated and thus may not reflect a

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user’s genuine interest or accurately predict his or her interaction with a given marketing message. For example, following the date we obtain the relevant data, a user’s interest and behavior pattern may change or he or she may have already completed a transaction and is no longer interested in the marketing message.

In addition, we expect to experience significant growth in the amount of data we process as we continue to develop new solutions and features to meet evolving and growing marketer demands. As the amount of data and variables we process increases, the calculations that our algorithms and data engines must process become increasingly complex and the likelihood of any defect or error increases. To the extent our proprietary algorithms and data engines fail to accurately assess or predict a user’s interest in and interaction with, the relevant marketing content, or experience significant errors or defects, marketers may not achieve their marketing goals in a cost-effective manner or at all, which could make our platform less attractive to them, result in damages to our reputation and a decline of our market share and adversely affect our business and results of operations.

Our ability to collect and use data from various sources could be restricted.

The optimal performance of our algorithms and data engines depends on the data that we collect from multiple sources, which we use to build user profiles, develop and refine our algorithms and data engines. Our ability to collect and use these types of data is limited by a number of factors, some of which are described in further details elsewhere in this section, including:

Any of the above described limitations on our ability to successfully collect and use data could materially impair the optimal performance of our algorithms and data engines as well as the efficiency of our solutions, which could make our platform less attractive to marketers and result in damages to our reputation, a decline of our market share and adversely affect our business and results of operations.

Blocking or deletion of cookies or other modifications to privacy settings on PCs and mobile devices could impair our data collection and effectiveness of our solutions.

Cookies that we place are generally regarded as “third party cookies” because we place them through internet browsers on an internet user when an internet user visit our website or a website owned by our marketers or other party that has given us permission to place cookies. Our cookies generally record non-personally identifiable information, including when a user views or clicks on a marketing message, where a user is located,

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how many marketing messages a user has seen, and browser or device information. We use data from cookies to help build user profiles that assess audience interest and predict audience potential interaction with a given marketing message. Cookies may easily be deleted or blocked by internet users. Commonly used internet browsers (Chrome, Firefox, Internet Explorer, and Safari) allow internet users to modify their browser settings to prevent cookies from being accepted by their browsers. Most browsers also now support temporary privacy modes that allow the user to suspend, with a single click, the placement of new cookies or reading or updates of existing cookies. Internet users can also delete cookies from their computers at any time. Some internet users also download free or paid “ad blocking” software that prevents certain cookies from being stored on a user’s computer. Further, certain web browsers, such as Safari, currently block or are planning to block some or all third-party cookies by default, as do Apple’s iPad and iPhones devices. Mobile devices based upon the Android operating system use cookies only in their web browser applications, so that cookies do not track Android users while they are using other applications on the device. If web browsers block, or internet users reject or delete, cookies, fewer of our cookies or our marketers’ cookies may be set in browsers or accessible in mobile devices, which could adversely affect our data collection and hence the optimal performance of our algorithms and data engines and effectiveness of our solutions.

Aside from blocking or deleting of cookies, other modifications to privacy settings on the PCs and mobile devices could limit or restrict our ability to collect and analyze data. For example, certain search engines, such as Google, provide an encrypted search function. Although we may still be able to see the amount of traffic brought to marketers’ website through the search engine, we will not be able to see the keywords that generate the traffic as the keywords are encrypted. This makes it more difficult for us to evaluate the effectiveness of keywords, and hence the effectiveness of our solutions may be compromised, which would result in client departure and reputation damages, and materially and adversely affect our business and results of operations.

Regulatory, legislative or self-regulatory developments for online businesses, including privacy and data protection regimes, are expansive, not clearly defined and rapidly evolving. These laws and regulations could create unexpected costs, subject us to enforcement actions for compliance failures, or restrict portions of our business or cause us to change our technology platform or business model.

Governments around the world, including the PRC and Hong Kong governments, have enacted or are considering legislation related to online businesses. There may be an increase in legislation and regulation related to online marketing, the use of geo-location data to inform marketing, the collection and use of anonymous internet user data and unique device identifiers, such as IP address or mobile unique device identifiers, and other data protection and privacy regulation. Some of our competitors may have more access to lobbyists or governmental officials and may use that access to effect statutory or regulatory changes in a manner to commercially harm us while favoring their solutions. These laws and regulations could adversely affect the demand for or effectiveness and value of our solutions, force us to incur substantial costs or require us to change our business practices in a manner that could adversely affect our business and results of operations or compromise our ability to effectively pursue our growth strategies.

We primarily target Chinese language internet users in China for our marketers from all over the world. As a result, we may be directly or indirectly subject to the laws and regulations on online marketing, including data and privacy laws, of multiple jurisdictions. In recent years, the PRC government has enacted legislation on internet use to protect personal information from any unauthorized disclosure. For example, the Several Provisions on Regulating the Market Order of Internet Information Services, promulgated by the Chinese Ministry of Industry and Information Technology, or MIIT, stipulate that internet information service providers must not, without a user’s consent, collect the user’s personal information that can reveal the identity of the user whether by itself or when used in combination with other information, and must not provide any such information to third parties without prior consent from the user. In addition, internet information service providers shall inform their users about their service scope and shall not use users’ information beyond such scope or collect any other information that is irrelevant to the services they provide. In Hong Kong, the Hong Kong Personal Data Ordinance prohibits an internet company collecting information about its users, analyzing

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the information for a profile of the user’s interests or selling or transmitting the profiles to third parties for direct marketing purposes unless it has obtained the user’s consent. The European Union has adopted the EU e-Privacy Directive and is considering reforms to its existing data protection legal framework. In addition, the EU Directive 2009/136/EC, commonly referred to as the “Cookie Directive,” directs EU member states to ensure that accessing information on an internet user’s computer, such as through a cookie, is allowed only if the internet user has given his or her consent. The U.S. government has announced that it is reviewing the need for greater regulation of the collection of consumer information, including regulation aimed at restricting some targeted advertising practices.

We strive to comply with all applicable laws and regulations relating to privacy and data collection, processing, use, and disclosure. These laws and regulations are continually evolving, are not always clear, and are not always consistent across the jurisdictions in which we do business, and the measures we take to comply with these laws, regulations and industry standards may not always be effective. We may be subject to litigation or enforcement action or reduced demand for our solutions if we or our marketers fail to abide by applicable privacy laws or to provide adequate notice and/or obtain consent from end users. In addition, some of our content distribution channels require us to indemnify and hold them harmless from the costs or consequences of litigation resulting from using their networks. Any proceeding or perception of concerns relating to our collection, use, disclosure, and retention of data, including our security measures applicable to the data we collect, whether or not valid, could harm our reputation, force us to spend significant amounts on defense of these proceedings, distract our management, increase our costs of doing business and inhibit the use of our solutions, which could materially and adversely affect our business, results of operations and prospects.

We are subject to, and may expend significant resources in defending against, government actions and civil claims in connection with false, fraudulent, misleading or otherwise illegal marketing content for which we provide design, production or agency services.

Under PRC Advertising Law, where an advertising operator provides advertising design, production or agency services with respect to an advertisement when it knows or should have known that the advertisement is false, fraudulent, misleading or otherwise illegal, the competent PRC authority may confiscate the advertising operator’s advertising revenue from such services, impose penalties, order it to cease dissemination of such false, fraudulent, misleading or otherwise illegal advertisement or correct such advertisement, or suspend or revoke its business licenses under certain serious circumstances.

Under the PRC Advertising Law, “advertising operators” include any natural person, legal person or other organization that provides advertising design, production or agency services to advertisers for their advertising activities. Since our solutions involve provision of agency services to marketers, including helping them identify, engage and convert audience, and create content catering to their potential clients across different content distribution channels, we are deemed as an “advertising operator” under the PRC Advertising Law. Therefore, we are required to examine advertising content for which we provide agency services for compliance with applicable laws, notwithstanding the fact that the advertising content may have been previously published, and that the advertisers also bear liabilities for the content in their advertisements. In addition, for advertising content related to certain types of products and services, such as alcohol, cosmetics, pharmaceuticals and medical procedures, we are expected to confirm that the advertisers have obtained requisite government approvals, including operating qualifications, proof of quality inspection for the advertised products, government pre-approval of the content of the advertisements and filings with the local authorities. Although we have established internal policies to review and vet advertising content before it is placed on a content distribution channel to ensure compliance with applicable laws, we cannot ensure that each advertisement for which we provide agency services complies with all PRC laws and regulations relevant to advertising activities, that supporting documentation provided by our clients is authentic or complete, or that we are able to identify and rectify all non-compliances in a timely manner.

Moreover, civil claims may be filed against us for fraud, defamation, subversion, negligence, copyright or trademark infringement or other violations due to the nature and content of the information for which we provide

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design, production or agency services. For example, we generally represent and warrant in our contracts with content distribution channels as to the truthfulness of the advertising content that we place on these channels, and agree to indemnify the content distribution channels for any losses resulting from false, fraudulent, misleading or otherwise illegal advertising content that we place on these content distribution channels. On the other hand, not all our marketing campaign contracts contain a back-to-back representation and warranty as to the truthfulness of the advertising content or an indemnity provision where the clients undertake to hold us harmless in case we incur losses arising out of any false, fraudulent, misleading or otherwise illegal advertising content. In the event we are subject to government actions or civil claims in connection with false, fraudulent, misleading or otherwise illegal marketing content for which we provide agency services, our reputation, business and results of operations may be materially and adversely affected.

If we are not able to grow efficiently to meet our clients’ increasing needs, our operating results could be harmed.

As usage of our solutions grows, we will need to devote additional resources to improving our system infrastructure. In addition, we will need to appropriately scale our internal business systems and our services organization, including account servicing staff, to serve marketers’ growing demands. We cannot assure you these improvements and expansions to our infrastructure and staff will be fully or effectively implemented on a timely basis, if at all. Even if we are able to upgrade our systems and expand our staff, such expansion may be expensive and complex and require our management’s time and attention. We could also face inefficiencies or operational failures as a result of our efforts to scale our infrastructure and expand our staff. Any of these could impair the performance of our platform, reduce customer satisfaction and lead to client departure, which could harm our reputation and adversely affect our business and results of operations.

If we fail to offer high-quality account services, our business and reputation may suffer.

Our success in marketing and sale of our solutions and retention and expansion of client base depends on our ability to maintain a consistently high level of customer services, client education and technical support, which requires that our account servicing personnel have specific marketing domain knowledge and expertise. If we are unable to hire and train a sufficient number of support staff to provide effective and timely support to our clients, our clients’ appreciation of, or satisfaction with, our solutions may be adversely affected, resulting in reduced client spending or departure and adversely affect our reputation and materially and adversely affect our business and results of operations.

If we fail to innovate, adapt and respond timely and effectively to rapidly changing technologies and new trends in online marketing, our solutions may become less competitive or obsolete.

Our future success will depend on our ability to continuously innovate, enhance and broaden our solutions to meet evolving marketing needs, and address technological advancements and new trends in online marketing, in particular the growing popularity of online marketing via mobile channel. We may not be able to timely identify and respond to these new trends. The design of mobile devices and operating systems is controlled by third parties with which we do not have any formal relationship. These parties frequently introduce new devices, and from time to time they may introduce new operating systems or modify existing ones. Network carriers may also restrict our ability to access specific content on mobile devices. If we fail to innovate or adapt our technologies and solutions so that they are compatible with these devices or operating systems, which in turn require that we maintain adequate research and development personnel and resources, our solutions may become less competitive or obsolete. In addition, any new solution that we develop may not receive wide acceptance as we anticipated. Any of these events could materially and adversely affect our business, results of operations and prospects.

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If we are unable to protect our proprietary information or other intellectual property, our business could be adversely affected.

We rely on a combination of trademark and trade secret laws, and contractual restrictions, including through confidentiality, non-disclosure and assignment of invention assignment agreements with our key employees, consultants and third parties with whom we do business, to establish, maintain and protect our proprietary information and other intellectual property. Policing any misappropriation, unauthorized use or reverse engineering our proprietary information and other intellectual property is difficult and costly and the steps we have taken may be inadequate. For example, contractual restrictions may be breached, and we may not succeed in enforcing our rights or have adequate remedies for any breach of laws or contractual restrictions. In addition, we may not be able to enter into agreements or arrangements with everyone who has access to our proprietary information or contributes to the development of our intellectual property. Moreover, our trade secrets may be disclosed to or otherwise become known or be independently developed by competitors, and in these situations we may have no or limited rights to stop others’ use of our information. Furthermore, to the extent that our employees, consultants or other third parties with whom we do business use intellectual property owned by others in their work for us, disputes may arise as to the rights to such intellectual property. If, for any of the above reasons, our intellectual property is disclosed or misappropriated, it would have an adverse effect on our business, financial condition and results of operations.

Our business may suffer if it is alleged or determined that our technologies or any other aspects of our business infringe on the intellectual property rights of others.

As we continue to expand and as litigation or other similar proceedings become more common in resolving commercial disputes, we face a higher risk of being subject to intellectual property infringement claims. Companies in the internet, technology and media industries are increasingly bringing and becoming subject to suits alleging infringement of proprietary rights. The validity, enforceability and scope of protection of intellectual property rights in internet-related industries are uncertain and evolving. In particular, our registered or unregistered trademarks or trade names may be challenged, infringed, circumvented, declared generic or determined to be infringing on other marks. At times, third parties may adopt trade names or trademarks similar to those of ours, thereby impeding our ability to build brand identity and possibly leading to market confusion. In addition, there could be potential trade name or trademark infringement claims brought by owners of other registered or unregistered trademarks that are similar to our registered or unregistered trademarks or trade names. If a third party has been using in commerce any mark that is confusingly similar to our trade names or trademarks, or has registered any such marks, prior to our use or registration of our trade names or trademarks, such third party could potentially bring infringement claims against us depending on the territory of the use or registration. Any such claim would require us to incur significant costs to defend, and if we are unsuccessful, we may be subject to an injunction and/or required to pay significant damages or spend significant time and resources to rebrand any relevant products or services.

We have received in the past, and expect to receive in the future, notices that claim we have infringed, misappropriated or misused other parties’ trademark and other intellectual property rights. For example, in January 2015, iClick, Inc., a company incorporated in the state of Washington in the United States and the owner of a U.S. registered trademark for the term “iClick” filed an action in the United States District Court for the District of Colorado against one of our subsidiaries in Hong Kong, iClick Interactive Asia Limited, alleging trademark and trade name infringement and unfair competition, among others. The basis of iClick Inc.’s claims arose from iClick Interactive Asia Limited’s use of the name iClick in the United States. We believe these claims lacked merit, primarily because the parties offer different goods and services, and therefore any chance of consumer confusion is remote. However, to avoid the costs and uncertainty of litigation, we settled the lawsuit in January 2016. Furthermore, we have not conducted any trademark clearance searches in the United States nor have we obtained any registrations or filed any applications for the registration of our trade names or trademarks in the United States. Although common law and federal law in the United States provide unregistered mark in use in the United States with protection against infringement, such protection is only limited to the geographic areas

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where such mark is in use. Therefore, we may not be able to effectively enforce and protect our trade names or trademark throughout the United States. Any litigation or other proceedings on intellectual property rights could be costly, time-consuming, divert management resources, and may impede our ability to use existing or develop new technologies or expand into new markets, any of which could have a material adverse effect upon our business and results of operations.

Past and future acquisitions, strategic investments, partnership or alliance could be difficult to integrate, divert the attention of key management personnel, disrupt our business, dilute shareholder value and adversely affect our results of operations and financial condition.

In July 2015, we acquired OptAim, a mobile marketing business. Since the acquisition, we have substantially expanded our mobile marketing business, with OptAim’s complementary mobile analytics, attribution technologies, and content distribution channel partners that allow marketers to track and optimize marketing campaigns on mobile channels. There can be no assurance that we will be successful in fully integrating, utilizing and leveraging OptAim’s business and technologies to further expand our mobile business and cross-channel capabilities, which may adversely affect our ability to achieve growth and business objectives, and have a material adverse effect upon our business and results of operations.

In addition, future acquisitions, strategic investments, partnerships or alliances could be difficult to integrate, divert the attention of key management personnel, disrupt our business, dilute shareholder value and adversely affect our business and results of operations. We have limited experience in acquiring and integrating businesses, products and technologies. If we identify an appropriate acquisition candidate, we may not be successful in negotiating the terms and/or financing of the acquisition, and our due diligence may fail to identify all of the problems, liabilities or other shortcomings or challenges of an acquired business, product or technology, including issues related to intellectual property, product quality or architecture, regulatory compliance practices, revenue recognition or other accounting practices or employee or client issues. Any acquisition or investment may require us to use significant amounts of cash, issue potentially dilutive equity securities or incur debt. In addition, acquisitions, including our recent acquisitions of OptAim, involve numerous risks, any of which could harm our business, including:

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If we are unable to successfully fully integrate any future business, product or technology we acquire, our business, financial conditions and results of operations may suffer.

We may be required to record significant impairment charges as a result of our acquisition of OptAim.

As of September 30, 2017, we had US$48.5 million of goodwill, which represented approximately 31.7% of our total assets, the majority of which was related to OptAim and its subsidiaries, VIE and VIE’s subsidiary. Goodwill is recorded at fair value and is not amortized, but is reviewed for impairment at least annually or more frequently if impairment indicators arise. In evaluating the potential for impairment of goodwill, we make assumptions regarding future operating performance, business trends, and market and economic conditions. Such analyzes further require us to make judgmental assumptions about sales, operating margins, growth rates, and discount rates.

There are inherent uncertainties related to these factors and to management’s judgment in applying these factors to the assessment of goodwill recoverability. Any possible changes in our judgmental assumptions on which the recoverability of goodwill is based would cause a change in the recoverable amounts of goodwill. In addition, we could be required to evaluate the recoverability of goodwill prior to the annual assessment if there are any impairment indicators, including experiencing disruptions to the business, unexpected significant declines in operating results, divestiture of a significant component of our business or market capitalization declines, any of which could be caused by our failure to manage OptAim or to successfully integrate its operations with our other operations. Impairment charges could negatively affect our reported earnings and financial ratios in the periods of such charges and limit our ability to obtain financing in the future. See “Management’s Discussion and Analysis of Financial Condition and Results of Operations – the Effect of Our Acquisition of OptAim” and “— Critical Accounting Policies — Impairment of Goodwill” for more information.

If we fail to implement and maintain an effective system of internal controls, we may be unable to accurately report our results of operations, meet our reporting obligations or prevent fraud.

Prior to this offering, we were a private company with limited accounting personnel and other resources with which to address our internal controls and procedures. Our management has not completed an assessment of the effectiveness of our internal control over financial reporting and our independent registered public accounting firm has not conducted an audit of our internal control over financial reporting. In the course of auditing our consolidated financial statements for the years ended December 31, 2015 and 2016, we and our independent registered public accounting firm identified two material weaknesses in our internal control over financial reporting as well as other control deficiencies, in accordance with the standards established by the Public Company Accounting Oversight Board of the United States, or the PCAOB.

As defined in the standards established by the PCAOB, a “material weakness” is a deficiency, or combination of deficiencies, in internal control over financial reporting, such that there is a reasonable possibility that a material misstatement of our company’s annual or interim financial statements will not be prevented or detected on a timely basis. The two material weaknesses identified relate to (1) the lack of sufficient accounting personnel with appropriate understanding of U.S. GAAP and SEC reporting requirements, and (2) the lack of a comprehensive accounting policies and procedures manual to facilitate preparation of U.S. GAAP financial statements, which inhibits our subsidiaries’ ability to prepare consolidation from local books based on PRC GAAP and Hong Kong Financial Reporting Standards to their U.S. GAAP basis information for group financial reporting and imposes a risk that adjustments to U.S. GAAP are not identified in a timely manner. We have taken measures and plan to continue to take measures to remediate these weaknesses. For details, see “Management’s

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Discussion and Analysis of Financial Condition and Results of Operations — Internal Control Over Financial Reporting.” However, the implementation of these measures may not fully address the material weaknesses and other control deficiencies in our internal control over financial reporting, and we cannot conclude that they have been fully remedied. Our failure to correct the material weaknesses and other control deficiencies, or our failure to discover and address any other control deficiencies could result in inaccuracies in our financial statements, and could also impair our ability to comply with applicable financial reporting requirements and related regulatory filings on a timely basis.

Neither we nor our independent registered public accounting firm has undertaken a comprehensive assessment of our internal control for purposes of identifying and reporting material weaknesses, significant deficiencies and other control deficiencies in our internal control over financial reporting as we and they will be required to do once we become a public company. In light of the number of material weaknesses and other control deficiencies that were identified as a result of the limited procedures performed, we believe it is possible that, had we performed a formal assessment of our internal control over financial reporting or had our independent registered public accounting firm performed an audit of our internal control over financial reporting, additional control deficiencies may have been identified.

Upon completion of this offering, we will become a public company in the United States subject to the Sarbanes-Oxley Act of 2002. Section 404 of the Sarbanes-Oxley Act of 2002, or Section 404, will require that we include a report of management on our internal control over financial reporting in our annual report on Form 20-F beginning with our annual report for the fiscal year ending December 31, 2018. In addition, once we cease to be an “emerging growth company” as such term is defined in the JOBS Act, our independent registered public accounting firm must attest to and report on the effectiveness of our internal control over financial reporting. Our management may conclude that our internal control over financial reporting is not effective. Moreover, even if our management concludes that our internal control over financial reporting is effective, our independent registered public accounting firm, after conducting its own independent testing, may issue a report that is qualified if it is not satisfied with our internal controls or the level at which our controls are documented, designed, operated or reviewed, or if it interprets the relevant requirements differently from us. In addition, after we become a public company, our reporting obligations may place a significant strain on our management, operational and financial resources and systems for the foreseeable future. We may be unable to timely complete our evaluation testing and any required remediation.

During the course of documenting and testing our internal control procedures, in order to satisfy the requirements of Section 404, we may identify other weaknesses and deficiencies in our internal control over financial reporting. In addition, if we fail to maintain the adequacy of our internal control over financial reporting, as these standards are modified, supplemented or amended from time to time, we may not be able to conclude on an ongoing basis that we have effective internal control over financial reporting in accordance with Section 404. If we fail to achieve and maintain an effective internal control environment, we could suffer material misstatements in our financial statements and fail to meet our reporting obligations, which would likely cause investors to lose confidence in our reported financial information. This could in turn limit our access to capital markets, harm our results of operations, and lead to a decline in the trading price of our ADSs. Additionally, ineffective internal control over financial reporting could expose us to increased risk of fraud or misuse of corporate assets and subject us to potential delisting from the stock exchange on which we list, regulatory investigations and civil or criminal sanctions.

Failures or disruption in any systems, software or hardware infrastructure supporting our platform and solutions could significantly disrupt our operation and cause us to lose clients or partners.

The optimal performance of our solutions relies on the continued and uninterrupted performance of our systems, software and hardware infrastructure, and security and integrity of our data. They are vulnerable to damages from a variety of sources, some of which are out of our control, including telecommunications failures, power outages, cyber-attacks, or other malicious human acts and natural disasters. Any steps we take to increase the reliability and redundancy of our systems, software and hardware infrastructure supporting our platform and

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solutions and to improve the security of our data assets may be expensive and may not be successful in preventing system failures or disruption. For example, techniques used to obtain unauthorized access to or sabotage our data or otherwise hack our systems change frequently and generally are not recognized until launched against a target. As a result, we may be unable to anticipate these techniques or to implement adequate preventative measures. Sustained or repeated failures or disruption in our systems, including from security breaches, whether actual or perceived, could significantly reduce the attractiveness of our solutions, harm our reputation, result in our liabilities and have a material adverse effect on our business and results of operations.

In addition, our business may be negatively affected by interruptions or delays in services provided by third-party system or infrastructure providers that we rely upon. We currently lease data centers and utilize related equipment and services from third-party data center providers. All of our data gathering and analytics are conducted on, and the marketing content we deliver are processed through, our servers located in these data centers and their cloud. We also rely on bandwidth providers and internet information service providers to deliver marketing content. While we have disaster recovery arrangements in place, our testing in actual disasters or similar events is limited and any damage to, or failure of, the systems or facilities of our third-party providers, including as a result of any occurrence of a natural disaster, an act of terrorism, vandalism or sabotage, a decision to close any data center or the facilities of any other third-party provider without adequate notice, or other unanticipated problems at these facilities, could adversely impact our ability to deliver our solution to marketers and have a material adverse effect on our business and results of operations.

Our inability to use software licensed from third parties, including open source software could negatively affect our ability to sell our solutions and subject us to possible litigation.

Our technology platform incorporates software licensed from third parties, including open source software, which we use without charge. Although we monitor our use of open source software, the terms of many open source licenses to which we are subject have not been interpreted by courts, and there is a risk that such licenses could be construed in a manner that imposes unanticipated conditions or restrictions on our ability to provide our solution to our clients. In addition, the terms of open source software licenses may require us to provide software that we develop using such software to others on unfavorable license terms. For example, certain open source licenses may require us to offer the components of our platform that incorporate the open source software for free, to make available source code for modifications or derivative works we create based upon, incorporating or using the open source software, and to license such modifications or derivative works under the terms of the particular open source license.

In the future, we could be required to seek licenses from third parties in order to continue offering our solution, in which case licenses may not be available on terms that are acceptable to us, or at all. Alternatively, we may need to re-engineer our solutions or discontinue use of portions of the functionality provided by our solutions. Our inability to use third-party software could result in disruptions to our business, or delays in the development of future offerings or enhancements of our existing platform, which could materially and adversely affect our business and results of operations.

If we fail to detect fraud or serve marketers’ marketing content on undesirable websites, our reputation will suffer, which would harm our brand and negatively impact our business and results of operations.

Our business depends in part on providing marketers with solutions that they can trust, and we have contractual commitments to take reasonable measures to prevent marketer’s marketing content from appearing on undesirable websites. We use proprietary technologies and third party services to detect click fraud and block inventory on websites with inappropriate content. However, technologies utilized by bad actors are constantly evolving. Preventing and combating fraud and inappropriate content requires constant vigilance and investment of time and resources. We may not always be successful in our efforts to do so. If we serve marketing content on websites that are objectionable to marketers, or inadvertently purchase content distribution opportunities for marketers that proves to be unacceptable for their marketing campaigns, such as fraudulent bot generated

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impressions, we may lose business and incur damages to our brand and reputation. In addition, we may be exposed to liabilities or the need to provide credits or refunds to our clients, and our business and results of operations may be harmed.

Any negative publicity with respect to us, the online marketing industry in general or our partners may materially and adversely affect our reputation, business and results of operations.

Complaints, litigation, regulatory actions or other negative publicity that arise about the online marketing industry in general or our company in particular, including on the quality, effectiveness and reliability of online marketing solutions, privacy and security practices, and online marketing content, even if inaccurate, could adversely affect our reputation and client confidence in, and the use of, our solutions. Harm to our reputation and client confidence can also arise for many other reasons, including employee misconduct, misconduct of our data and content distribution channel partners, data center providers or other counterparties, failure by these persons or entities to meet minimum quality standards or otherwise fulfill their contractual obligations or to comply with applicable laws and regulations. Additionally, negative publicity with respect to our data or content distribution channel partners could also affect our business and results of operation to the extent that we rely on these partners or if marketers or marketing agencies associate our company with such partners.

If we fail to promote or maintain our brand in a cost-efficient manner, our business and results of operations may be harmed.

We believe that developing and maintaining awareness of our brand in a cost-effective manner is critical to achieving widespread acceptance of our solutions, and is an important element in attracting new clients and partners. Furthermore, we believe that the importance of brand recognition will increase as competition in our market increases. Successful promotion of our brand will depend largely on our ability to deliver value propositions to marketers and on the effectiveness of our marketing efforts. In the past, our efforts to build our brand have involved significant expenses and promotion of our brand may be subject to restrictions and challenges. For example, as part of the settlement of the trademark infringement lawsuit brought by iClick, Inc. in January 2015, although we are free to use the term “iClick” in connection with our business in the United States, we are subject to ongoing obligations and restrictions to certain types of marketing and promotion that contain that term. In addition, our brand promotion activities may not yield increased revenue, and even if they do, any increased revenue may not offset the expenses we incurred in building our brand. If we fail to successfully promote and maintain our brand, or incur substantial expenses in an unsuccessful attempt to promote and maintain our brand, we may fail to attract enough new clients or retain our existing clients and our business and results of operations can be materially and adversely affected.

Misconduct, errors and failure to function by our employees could harm our business and reputation.

We are exposed to many types of operational risks, including the risk of misconduct and errors by our employees. Our business depends on our employees to process a large number of marketing campaigns orders, which involve the use of audience data and marketers’ business information. We could be materially adversely affected if such data or information was disclosed to unintended recipients or if we experience an operational breakdown or failure in the processing of a marketing campaign whether as a result of human error, a purposeful sabotage or a fraudulent manipulation of our operations or systems. We could also be materially adversely affected if our employees absconded with our proprietary data or used our know-how to compete with us. Although employees have left our company in the past and may have violated the non-compete and non-solicitation clauses in their employment agreements with little impact on our business, future violations of these clauses could have a material adverse effect on our business. Any of these occurrences could result in our diminished ability to operate our business, potential liability to our clients, inability to attract future clients, reputational damage, regulatory intervention and financial harm, which could negatively impact our business and results of operations.

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We may not be able to obtain additional capital when desired, on favorable terms or at all.

We intend to continue to make investments to support our business growth and may require additional funds, beyond those generated by this offering, to respond to business challenges, including to better support and serve our clients and provide better terms for our clients to capture more market share, develop new features or enhance our platform and solutions, improve our operating and technology infrastructure or acquire complementary businesses and technologies. Accordingly, we may need to engage in public or private equity, equity-linked or debt financings to secure additional funds. If we raise additional funds through future issuances of equity or convertible debt securities, our existing shareholders could suffer significant dilution, and any new equity securities we issue could have rights, preferences and privileges superior to those of holders of our ordinary shares. Any debt financing that we secure in the future could involve restrictive covenants relating to our capital raising activities and other financial and operational matters, including the ability to pay dividends. This may make it more difficult for us to obtain additional capital and to pursue business opportunities, including potential acquisitions. We may not be able to obtain additional financing on terms favorable to us, if at all. If we are unable to obtain adequate financing on terms satisfactory to us when we require it, our ability to continue to support our business growth and respond to business challenges could be significantly impaired, and our business and prospects could be adversely affected.

If we do not retain our senior management team, including our founders, and key employees, or attract additional technology and sales talents, we may not be able to sustain our growth or achieve our business objectives.

Our future success is substantially dependent on the continued service of our senior management team, including our founders, Sammy Hsieh, Ricky Ng and Jian Tang. Our management team is currently spread across multiple physical locations and geographies, which can strain the organization and make coordinated management more challenging. Our future success also depends on our ability to continue to attract, retain and motivate highly skilled employees, particularly employees with technical skills that enable us to deliver effective marketing solutions, and sales and marketing, and publisher development and support personnel with experience in online marketing. Competition for these employees in our industry is intense. As a result, we may be unable to attract or retain these management, technical, sales and marketing and publisher development and support personnel who are critical to our success, resulting in harm to our key marketer and publisher relationships, loss of key information, expertise or proprietary knowledge and unanticipated recruitment and training costs. The loss of the services of our senior management or other key employees could make it more difficult to successfully operate our business and pursue our business goals.

Increases in labor costs in the PRC may adversely affect our business and results of operations. Most of our employees are based in China. Chinese economy has experienced increases in inflation and labor costs in recent years. As a result, average wages in the PRC are expected to continue to increase. In addition, we are required by PRC laws and regulations to pay various statutory employee benefits, including pension, housing fund, medical insurance, work-related injury insurance, unemployment insurance and maternity insurance to designated government agencies for the benefit of our employees. We expect that our labor costs, including wages and employee benefits, will continue to increase. Unless we are able to control our labor costs or pass on these increased labor costs to our users by increasing the fees of our services, our financial condition and results of operations may be adversely affected.

We face risks related to natural disasters, health epidemics and other outbreaks, which could significantly disrupt our operations.

We are vulnerable to natural disasters and other calamities. Fire, floods, typhoons, earthquakes, power loss, telecommunications failures, break-ins, war, riots, terrorist attacks or similar events may give rise to server interruptions, breakdowns, system failures, technology platform failures or internet failures, which could cause the loss or corruption of data or malfunctions of software or hardware as well as adversely affect our ability to

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provide solutions and services on our platform. Our business could also be adversely affected by the effects of Ebola virus disease, Zika virus disease, H1N1 flu, H7N9 flu, avian flu, Severe Acute Respiratory Syndrome, or SARS, or other epidemics. Our business operations could be disrupted if any of our employees is suspected of having Ebola virus disease, Zika virus disease, H1N1 flu, H7N9 flu, avian flu, SARS or other epidemic, since it could require our employees to be quarantined and/or our offices to be disinfected. In addition, our results of operations could be adversely affected to the extent that any of these epidemics harms the Chinese economy in general.

Most of our system hardware and back-up systems are hosted in leased facilities in Hong Kong, Shanghai, Beijing, Guangzhou and Zhejiang province, and most of our directors, senior management and employees are based in Hong Kong, Shanghai and Beijing. Therefore, if any of the above-mentioned natural disasters, health epidemics or other outbreaks were to occur in these regions, our operations may experience material disruptions, such as temporary closure of our offices and suspension of services, which may materially and adversely affect our business and results of operations.

We do not have any business insurance coverage.

Insurance companies in China currently do not offer as extensive an array of insurance products as insurance companies in more developed economies. Currently, we do not have any business liability or disruption insurance to cover our operations. We have determined that the costs of insuring for these risks and the difficulties associated with acquiring such insurance on commercially reasonable terms make it impractical for us to have such insurance. Any uninsured business disruptions may result in our incurring substantial costs and the diversion of resources, which could have an adverse effect on our business and results of operations.

Risks Related to Our Corporate Structure

We will need to continue to rely on the contractual arrangements that establish the structure for certain of our operations in China when and to the extent our operations are deemed as foreign-related survey.

Foreign ownership in advertising business used to be subject to certain restrictions under the PRC laws and regulations. For example, according to the Administrative Provisions on Foreign-Invested Advertising Enterprises, which were abolished in June 2015, foreign investors were required to meet several conditions in order to invest in PRC advertising business, such as a minimum number of years of advertising-related experience and an approval from the relevant PRC regulatory authority. OptAim, which we acquired in July 2015, is a Cayman Islands company and OptAim Beijing, its PRC subsidiary, is considered a foreign invested enterprise, or FIE. To comply with the then-effective PRC laws and regulations, including the Administrative Provisions on Foreign-Invested Advertising Enterprises, OptAim Beijing entered into a set of contractual arrangements with OptAim Network and its shareholders. For a detailed description of these contractual arrangements, see “Corporate History and Structure.” As a result of these contractual arrangements, we exert control over OptAim Network and its wholly owned subsidiary, Zhiyunzhong, and consolidate their operating results in our financial statements under U.S. GAAP.

We are in the process of transferring the business operated by our VIE, OptAim Network, to our wholly owned subsidiaries. We expect that by the end of 2018, OptAim Beijing will replace OptAim Network as contracting party for all our mobile audience solution business that are operated by OptAim. However, we cannot assure you that such transition will be completed in a timely manner or at all as some of our clients may not be willing to enter into contracts with a new signing entity or OptAim Beijing may not have the necessary infrastructure to support the transition of all our mobile audience solution business operated by OptAim. Therefore, OptAim may continue to conduct part of its business in China through the contractual arrangements between OptAim Beijing, OptAim Network and its shareholders. In 2016, OptAim contributed 44.8% to our gross billing and 53.6% of our net revenues and in the nine months ended September 30, 2017, OptAim contributed 63.5% to our gross billing and 76.6% of our net revenues.

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Under the Measures on the Administration of Foreign-related Surveys, or the Foreign-related Surveys Measures, promulgated by the National Bureau of Statistics of China on October 13, 2004, no individual or organization may conduct any foreign-related survey without a license for foreign-related survey granted by the National Bureau of Statistics in China or its local counterparts. Under the Catalogue for the Guidance of Foreign Investment Industries, promulgated by the Ministry of Commerce and National Development and Reform Commission on March 10, 2015, only a domestic enterprise or a sino-foreign enterprise which meets the several requirements stipulated in the Foreign-related Surveys Measures can apply for a license for the foreign-related survey. We do not believe our collection and use of multiple kinds of data from multiple sources in China to improve the cost-effectiveness of marketing campaigns for marketers in and outside China fall within the scope of “foreign-related survey” under the Foreign-related Survey Measures. However, there are uncertainties under the PRC Laws whether such activities may be deemed as “foreign-related survey”, which would require a foreign-related survey license from the National Bureau of Statistics in China or its local counterparts. In light of these uncertainties and out of prudence, we, through our VIE OptAim Network applied for and were granted a foreign-related survey license on June 6, 2017 by the Chinese National Bureau of Statistics. If the PRC regulatory authorities disagree with our interpretation of what would constitute foreign-related survey and enforcement practices on foreign-related survey licensing requirement or if we expand our business scope to engage in activities falling within the scope of foreign-related survey, we will need to continue to rely on OptAim Beijing’s contractual arrangements with OptAim Network and its shareholders to conduct certain of our operations in China, including to transfer such operations to our VIE to the extent they are deemed foreign-related survey.

In the opinion of our PRC counsel, Jingtian & Gongcheng, our current ownership structure, the ownership structure of our PRC subsidiaries, our consolidated variable interest entity and its subsidiary, and the contractual arrangements among OptAim Beijing, OptAim Network and the shareholders of OptAim Network are not in violation of existing PRC laws, rules and regulations; and these contractual arrangements are valid, binding and enforceable in accordance with their terms and applicable PRC laws and regulations currently in effect. However, Jingtian & Gongcheng has also advised us that there are substantial uncertainties regarding the interpretation and application of current or future PRC laws and regulations and there can be no assurance that the PRC government will ultimately take a view that is consistent with the opinion of our PRC counsel.

It is uncertain whether any new PRC laws, rules or regulations relating to variable interest entity structures will be adopted or if adopted, what they would provide. In particular, in January 2015, the Ministry of Commerce, or the MOC, published a discussion draft of the proposed Foreign Investment Law for public review and comments. Among other things, the draft Foreign Investment Law expands the definition of foreign investment and introduces the principle of “actual control” in determining whether a company is considered a foreign-invested enterprise, or an FIE. Under the draft Foreign Investment Law, variable interest entities would also be deemed as FIEs, if they are ultimately “controlled” by foreign investors, and be subject to restrictions on foreign investments. However, the draft law has not taken a position on what actions will be taken with respect to the existing companies with the “variable interest entity” structure, whether or not these companies are controlled by Chinese parties. It is uncertain when the draft would be signed into law and whether the final version would have any substantial changes from the draft. See “Regulation — Regulations on Foreign Investment” and “— Substantial uncertainties exist with respect to the enactment timetable, interpretation and implementation of draft PRC Foreign Investment Law and how it may impact the viability of our current corporate structure, corporate governance and business operations.” If the ownership structure, contractual arrangements and business of our company, our PRC subsidiaries or our consolidated variable interest entity and its subsidiary are found to be in violation of any existing or future PRC laws or regulations, or we fail to obtain or maintain any of the required permits or approvals, the relevant governmental authorities would have broad discretion in dealing with such violation, including levying fines, confiscating our income or the income of our PRC subsidiaries, consolidated variable interest entity or its subsidiary, revoking the business licenses or operating licenses of our PRC subsidiaries, consolidated variable interest entity or its subsidiary, shutting down our servers or blocking our online platform, discontinuing or placing restrictions or onerous conditions on our operations, requiring us to undergo a costly and disruptive restructuring, restricting or prohibiting our use of proceeds from this offering to

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finance our business and operations in China, and taking other regulatory or enforcement actions that could be harmful to our business. Any of these actions could cause significant disruption to our business operations and severely damage our reputation, which would in turn materially and adversely affect our business and results of operations. If any of these occurrences results in our inability to direct the activities of our consolidated variable interest entity and its subsidiary, and/or our failure to receive economic benefits from our consolidated variable interest entity and its subsidiary, we may not be able to consolidate their results into our consolidated financial statements in accordance with U.S. GAAP.

We rely on contractual arrangements with our variable interest entity and its shareholders for certain of our business operations, which may not be as effective as direct ownership in providing operational control.

We have relied and expect to continue to rely on contractual arrangements with our variable interest entity, OptAim Network, and its shareholders for part of our online marketing business on mobile channels in China, as well as certain other complementary businesses, subject to the completion of the transfers of all the marketing campaign contracts executed by our VIE entity to our wholly owned PRC subsidiary, and to the extent our operations are deemed as foreign-related survey. For a description of these contractual arrangements, see “Corporate History and Structure.” These contractual arrangements may not be as effective as direct ownership in providing us with control over our consolidated variable interest entity and its subsidiary.

If we had direct ownership of OptAim Network and Zhiyunzhong, we would be able to exercise our rights as a shareholder to effect changes in the board of directors of OptAim Network and Zhiyunzhong, which in turn could implement changes, subject to any applicable fiduciary obligations, at the management and operational level. However, under the current contractual arrangements, we rely on the performance by OptAim Network and the shareholders of OptAim Network of their obligations under the contracts to exercise control over our consolidated variable interest entity and its subsidiary. The shareholders of our consolidated variable interest entity may not act in the best interests of our company or may not perform their obligations under these contracts. Such risks exist throughout the period in which we intend to operate our business through the contractual arrangements with OptAim Network and its shareholders. In addition, if any third party claims any interest in such shareholders’ equity interests in OptAim Network, our ability to exercise shareholders’ rights or foreclose the share pledge according to the contractual arrangements may be impaired. Therefore, our contractual arrangements with our consolidated variable interest entity may not be as effective in ensuring our control over the relevant portion of our business operations as direct ownership would be.

Any failure by our variable interest entity or its shareholders to perform their obligations under our contractual arrangements with them would have a material adverse effect on our business.

If our consolidated variable interest entity or its shareholders fail to perform their respective obligations under the contractual arrangements, we may have to incur substantial costs and expend additional resources to enforce such arrangements. We may also have to rely on legal remedies under PRC laws, including seeking specific performance or injunctive relief, and claiming damages, which we cannot assure you will be effective under PRC laws. For example, if the shareholders of OptAim Network were to refuse to transfer their equity interest in OptAim Network to us or our designee if we exercise the purchase option pursuant to these contractual arrangements, or if they were otherwise to act in bad faith toward us, then we may have to take legal actions to compel them to perform their contractual obligations. In addition, if any third parties claim any interest in such shareholders’ equity interests in OptAim Network, our ability to exercise shareholders’ rights or foreclose the share pledge according to the contractual arrangements may be impaired.

All the agreements under our contractual arrangements are governed by PRC laws and provide for the resolution of disputes through arbitration in China. Accordingly, these contracts would be interpreted in accordance with PRC laws and any disputes would be resolved in accordance with PRC legal procedures. The legal system in the PRC is different from some other jurisdictions, such as the United States. As a result, uncertainties in the PRC legal system could limit our ability to enforce these contractual arrangements.

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Meanwhile, there are very few precedents and little formal guidance as to how contractual arrangements in the context of a consolidated variable interest entity should be interpreted or enforced under PRC laws. There remain significant uncertainties regarding the ultimate outcome of such arbitration should legal action become necessary. In addition, under PRC laws, rulings by arbitrators are final and parties cannot appeal arbitration results in court unless such rulings are revoked or determined unenforceable by a competent court. If the losing parties fail to carry out the arbitration awards within a prescribed time limit, the prevailing parties may only enforce the arbitration awards in PRC courts through arbitration award recognition proceedings, which would require additional expenses and delay. In the event that we are unable to enforce these contractual arrangements, or if we suffer significant delay or other obstacles in the process of enforcing these contractual arrangements, we may not be able to exert effective control over our consolidated variable interest entity and its subsidiary, and our ability to conduct our business may be negatively affected.

The shareholders of our variable interest entity, may have potential conflicts of interest with us, which may materially and adversely affect our business and financial condition.

The equity interests of OptAim Network are held by Mr. Jian Tang, who is our co-founder, director, chief operating officer and chief technology officer, and Ms. Jie Jiao, who is our chief financial officer. Their interests may differ from the interests of our company as a whole. These shareholders may breach, or cause our consolidated variable interest entity to breach, or refuse to renew the existing contractual arrangements we have with them and our consolidated variable interest entity, which would have a material adverse effect on our ability to effectively control our consolidated variable interest entity and receive economic benefits from them. For example, the shareholders may be able to cause our agreements with OptAim Network to be performed in a manner adverse to us by, among other things, failing to remit payments due under the contractual arrangements to us on a timely basis. We cannot assure you that when conflicts of interest arise, any or all of these shareholders will act in the best interests of our company or such conflicts will be resolved in our favor.

Currently, we do not have any arrangements to address potential conflicts of interest between these shareholders and our company, except that we could exercise our purchase option under the second amended and restated exclusive option agreement with these shareholders to request them to transfer all of their equity interests in OptAim Network to a PRC entity or individual designated by us, to the extent permitted by PRC laws. If we cannot resolve any conflict of interest or dispute between us and the shareholders of OptAim Network, we would have to rely on legal proceedings, which could result in the disruption of our business and subject us to substantial uncertainty as to the outcome of any such legal proceedings.

Contractual arrangements in relation to our variable interest entity may be subject to scrutiny by the PRC tax authorities and they may determine that we or our PRC variable interest entity owe additional taxes, which could negatively affect our results of operations and the value of your investment.

Under applicable PRC laws and regulations, arrangements and transactions among related parties may be subject to audit or challenge by the PRC tax authorities within ten years after the taxable year when the transactions are conducted. The PRC enterprise income tax law requires every enterprise in China to submit its annual enterprise income tax return together with a report on transactions with its related parties to the relevant tax authorities. The tax authorities may impose reasonable adjustments on taxation if they have identified any related party transactions that are inconsistent with arm’s length principles. We may face material and adverse tax consequences if the PRC tax authorities determine that the contractual arrangements between our wholly owned subsidiary OptAim Beijing, our variable interest entity OptAim Network and the shareholders of OptAim Network were not entered into on an arm’s length basis in such a way as to result in an impermissible reduction in taxes under applicable PRC laws, rules and regulations, and adjust OptAim Network’s income in the form of a transfer pricing adjustment. A transfer pricing adjustment could, among other things, result in a reduction of expense deductions recorded by OptAim Network for PRC tax purposes, which could in turn increase their tax liabilities without reducing OptAim Beijing’s tax expenses. In addition, if OptAim Beijing requests the shareholders of OptAim Network to transfer their equity interests in OptAim Network at nominal or no value

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pursuant to these contractual arrangements, such transfer could be viewed as a gift and subject OptAim Beijing to PRC income tax. Furthermore, the PRC tax authorities may impose late payment fees and other penalties on OptAim Network for the adjusted but unpaid taxes according to the applicable regulations. Our results of operations could be materially and adversely affected if OptAim Network’s tax liabilities increase or if they are required to pay late payment fees and other penalties.

Substantial uncertainties exist with respect to the enactment timetable, interpretation and implementation of draft PRC Foreign Investment Law and how it may impact the viability of our current corporate structure, corporate governance and business operations.

The MOC published a discussion draft of the proposed Foreign Investment Law in January 2015 aiming to, upon its enactment, replace the trio of existing laws regulating foreign investment in China, namely, the Sino-foreign Equity Joint Venture Enterprise Law, the Sino-foreign Cooperative Joint Venture Enterprise Law and the Wholly Foreign-invested Enterprise Law, together with their implementation rules and ancillary regulations. The draft Foreign Investment Law embodies an expected PRC regulatory trend to rationalize its foreign investment regulatory regime in line with prevailing international practice and the legislative efforts to unify the corporate legal requirements for both foreign and domestic investments. The MOC is currently soliciting comments on this draft and substantial uncertainties exist with respect to its enactment timetable, interpretation and implementation. The draft Foreign Investment Law, if enacted as proposed, may materially impact the viability of our current corporate structure, corporate governance and business operations in many aspects.

Among other things, the draft Foreign Investment Law expands the definition of foreign investment and introduces the principle of “actual control” in determining whether a company is considered an FIE. The draft Foreign Investment Law specifically provides that entities established in China but “controlled” by foreign investors will be treated as FIEs, whereas an entity set up in a foreign jurisdiction would nonetheless be, upon market entry clearance by the MOC, treated as a PRC domestic investor provided that the entity is “controlled” by PRC entities and/or citizens. According to the draft Foreign Investment Law, once an entity is determined to be an FIE, it will be subject to the foreign investment restrictions or prohibitions set forth in a “catalogue of special administrative measures,” which is classified into the “catalogue of prohibitions” and “the catalogue of restrictions”, to be separately issued by the State Council later. Foreign investors are not allowed to invest in any sector set forth in the catalogue of prohibitions. Please see “Regulation — Regulations on Foreign Investment” for more details.

The draft Foreign Investment Law does not indicate what actions shall be taken with respect to companies with an existing VIE structure, whether or not these companies are controlled by Chinese parties. Moreover, it is uncertain whether the “catalogue of special administrative measures” to be issued will differ from the Catalogue for the Guidance of Foreign Investment Industries (Revised in 2015), or the 2015 Catalogue, and re-impose foreign investment restrictions or prohibitions on online marketing industry or advertising industry. If the enacted version of the Foreign Investment Law and the final “catalogue of special administrative measures” mandate further actions, such as the MOC market entry clearance, to be completed by companies with an existing VIE structure like us, and if online marketing industry or advertising industry becomes once again subject to the foreign investment restrictions or prohibitions or if our operations are deemed as foreign-related survey, we will face uncertainties as to whether such clearance can be timely obtained, or at all. If we are not able to obtain such clearance when required, our VIE structure may be regarded as invalid and illegal. As a result, we would not be able to (i) continue our business in China through our contractual arrangements with OptAim Network and Zhiyunzhong, (ii) exert control over OptAim Network, (iii) receive the economic benefits of OptAim Network under such contractual arrangements, or (iv) consolidate the financial results of OptAim Network and Zhiyunzhong. Were this to occur, our results of operations and financial condition would be materially and adversely affected.

The draft Foreign Investment Law, if enacted as proposed, may also materially impact our corporate governance practice and increase our compliance costs. For instance, the draft Foreign Investment Law imposes

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stringent ad hoc and periodic information reporting requirements on foreign investors and the applicable FIEs. Aside from an investment information report required at each investment, and investment amendment reports, which shall be submitted upon alteration of investment specifics, it is mandatory for entities established by foreign investors to submit an annual report, and large foreign investors meeting certain criteria are required to report on a quarterly basis. Any company found to be non-compliant with these reporting obligations may potentially be subject to fines and/or administrative or criminal liabilities, and the persons directly responsible may be subject to criminal liabilities.

If we exercise the option to acquire equity ownership of OptAim Network, the ownership transfer may subject us to certain limitation and substantial costs.

Pursuant to the contractual arrangements, OptAim Beijing has the exclusive right to purchase all or any part of the equity interests in OptAim Network from OptAim Network’s shareholders for a nominal price, unless the relevant government authorities or then applicable PRC laws request that a minimum price amount be used as the purchase price, in such case the purchase price shall be the lowest amount under such request. The shareholders of OptAim Network will be subject to PRC individual income tax on the difference between the equity transfer price and the then current registered capital of our consolidated variable interest entity. Additionally, if such a transfer takes place, the competent tax authority may require OptAim Beijing to pay enterprise income tax for ownership transfer income with reference to the market value, in which case the amount of tax could be substantial.

Risks Related to Doing Business in China

Uncertainties in the interpretation and enforcement of PRC laws and regulations could limit the legal protections available to us.

The PRC legal system is based on written statutes. Unlike common law legal systems, prior court decisions may be cited for reference but have limited precedential value. The PRC legal system evolves rapidly, and the interpretations of many laws, regulations and rules may contain inconsistencies and enforcement of these laws, regulations and rules involves uncertainties.

From time to time, we may have to resort to administrative and court proceedings to enforce our legal rights. However, since PRC administrative and court authorities have significant discretion in interpreting and implementing statutory and contractual terms, it may be more difficult to evaluate the outcome of administrative and court proceedings and the level of legal protection we enjoy than in more developed legal systems. Furthermore, the PRC legal system is based in part on government policies and internal rules (some of which are not published in a timely manner or at all) that may have retroactive effect. As a result, we may not be aware of our violation of these policies and rules until sometime after the violation. Such uncertainties, including uncertainty over the scope and effect of our contractual, property (including intellectual property) and procedural rights, could materially and adversely affect our business and impede our ability to continue our operations. Litigation in China may be protracted and result in substantial costs and diversion of resources and management attention.

Changes in China’s economic, political or social conditions or government policies could have a material adverse effect on our business and results of operations.

Our primary operations are based in, and a substantial percentage of our revenue is generated from, China. Accordingly, our business, prospects, financial condition and results of operations may be influenced to a significant degree by political, economic and social conditions in China generally and by continued economic growth in China as a whole.

The Chinese economy differs from the economies of most developed countries in many respects, including the amount of government involvement, level of development, growth rate, control of foreign exchange and

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allocation of resources. Although the PRC government has implemented measures emphasizing the utilization of market forces for economic reform, the reduction of state ownership of productive assets and the establishment of improved corporate governance in business enterprises, a substantial portion of productive assets in China is still owned by the government. In addition, the PRC government continues to play a significant role in regulating industry development by imposing industrial policies. The PRC government also exercises significant control over China’s economic growth through allocating resources, controlling payment of foreign currency-denominated obligations, setting monetary policy, and providing preferential treatment to particular industries or companies.

While the Chinese economy has experienced significant growth over the past decades, growth has been uneven, both geographically and among various sectors of the economy. The PRC government has implemented various measures to encourage economic growth and guide the allocation of resources. Some of these measures may benefit the overall PRC economy, but may have a negative effect on us. For example, our financial condition and results of operations may be adversely affected by government control over capital investments or changes in tax regulations. In addition, in the past the Chinese government has implemented certain measures, including interest rate increases, to control the pace of economic growth. These measures may cause decreased economic activity in China, and since 2012, the Chinese economy has slowed down. Any adverse changes in economic conditions in China, in the policies of the PRC government or in the laws and regulations in China could have a material adverse effect on the overall economic growth of China. Such developments could adversely affect our business and operating results, lead to reduction in demand for our services and adversely affect our competitive position.

A downturn in the Chinese or global economy could reduce the demand for our solutions, which could materially and adversely affect our business and results of operations.

The global financial markets have experienced significant disruptions since 2008 and the United States, Europe and other economies have experienced periods of recession. The recovery from the lows of 2008 and 2009 has been uneven and is facing new challenges, including the escalation of the European sovereign debt crisis from 2011 and the slowdown of the Chinese economy since 2012. It is unclear whether the Chinese economy will resume its high growth rate. Furthermore, the government of the United Kingdom held an in-or-out referendum on its membership in the European Union on June 23, 2016. The referendum resulted in a vote in favor of the exit of the United Kingdom from the European Union (“Brexit”). The uncertainty caused by Brexit could negatively impact all of the economies and market conditions of the European Union and/or worldwide, and could continue to contribute to instability in the global financial markets. There is considerable uncertainty over the long-term effects of the expansionary monetary and fiscal policies adopted by the central banks and financial authorities of some of the world’s leading economies, including the United States and China. There have also been concerns over unrest in Ukraine, the Middle East and Africa, which have resulted in volatility in financial and other markets. There have also been concerns about the economic effect of the tensions in the relationship between China and surrounding Asian countries. Economic conditions in China are sensitive to global economic conditions. Any prolonged slowdown in the global or Chinese economy may reduce the demand for our solutions and have a negative impact on our business, results of operations and financial condition. Additionally, continued turbulence in the international markets may adversely affect our ability to access the capital markets to meet liquidity needs.

We rely on dividends and other distributions on equity paid by our PRC subsidiaries to fund any cash and financing requirements we may have, and any limitation on the ability of our PRC subsidiaries to make payments to us could have a material adverse effect on our ability to conduct our business.

We are a Cayman Islands exempted limited liability company, used as a holding company, and we rely principally on dividends and other distributions on equity from our PRC subsidiaries for our cash requirements, including payment of dividends and other cash distributions to holders of our ordinary shares and services of any debt we may incur. If our PRC subsidiaries incur debt on their own behalf in the future, the instruments

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governing the debt may restrict their ability to pay dividends or make other distributions to us. Under PRC laws and regulations, our PRC subsidiaries, as wholly foreign-owned enterprises in China, may pay dividends only out of their respective accumulated after-tax profits as determined in accordance with PRC accounting standards and regulations. In addition, a wholly foreign-owned enterprise is required to set aside at least 10% of its accumulated after-tax profits each year, if any, to fund certain statutory reserve funds, until the aggregate amount of such funds reaches 50% of its registered capital. At its discretion, a wholly foreign-owned enterprise may allocate a portion of its after-tax profits based on PRC accounting standards to staff welfare and bonus funds. These reserve funds and staff welfare and bonus funds are not distributable as cash dividends.

In addition, the PRC tax authorities may require our PRC subsidiaries to adjust its taxable income under the contractual arrangements it currently has in place with our consolidated variable interest entity in a manner that would materially and adversely affect their ability to pay dividends and other distributions to us.

Any limitation on the ability of our PRC subsidiaries to pay dividends or make other distributions to us could materially and adversely limit our ability to grow, make investments or acquisitions that could be beneficial to our business, pay dividends, or otherwise fund and conduct our business.

PRC regulation of loans to and direct investment in PRC entities by offshore holding companies and governmental control of currency conversion may delay or prevent us from using the proceeds of this offering to make loans to or make additional capital contributions to our PRC subsidiaries, which could materially and adversely affect our liquidity and our ability to fund and expand our business.

Any funds we transfer to our PRC subsidiaries, either as a shareholder loan or as an increase in registered capital, are subject to approval by or registration with relevant governmental authorities in China. According to the relevant PRC regulations on foreign-invested enterprises in China, capital contributions to our PRC subsidiaries are subject to the requirement of making necessary filings in the Foreign Investment Comprehensive Management Information System, or FICMIS, and registration with other governmental authorities in China. In addition, (a) any foreign loan procured by our PRC subsidiaries is required to be registered with the State Administration of Foreign Exchange, or SAFE, or its local branches, and (b) each of our PRC subsidiaries may not procure loans which exceed the difference between its registered capital and its total investment amount as recorded in FICMIS. Any medium or long term loan to be provided by us to our variable interest entity must be recorded and registered by the National Development and Reform Committee and the SAFE or its local branches. We may not complete such recording or registrations on a timely basis, if at all, with respect to future capital contributions or foreign loans by us to our PRC subsidiaries. If we fail to complete such recording or registration, our ability to use the proceeds of this offering and to capitalize our PRC operations may be negatively affected, which could adversely affect our liquidity and our ability to fund and expand our business.

In 2008, the SAFE promulgated the Circular on the Relevant Operating Issues Concerning the Improvement of the Administration of the Payment and Settlement of Foreign Currency Capital of Foreign-Invested Enterprises, or SAFE Circular 142, which used to regulate the conversion by foreign-invested enterprises of foreign currency into Renminbi by restricting the usage of converted Renminbi. On March 30, 2015, the SAFE promulgated the Circular on Reforming the Management Approach Regarding the Foreign Exchange Capital Settlement of Foreign-Invested Enterprises, or SAFE Circular 19. SAFE Circular 19 took effect as of June 1, 2015 and superseded SAFE Circular 142 on the same date. SAFE Circular 19 launched a nationwide reform of the administration of the settlement of the foreign exchange capitals of foreign-invested enterprises and allows foreign-invested enterprises to settle their foreign exchange capital at their discretion, but continues to prohibit foreign-invested enterprises from using the Renminbi fund converted from their foreign exchange capitals for expenditure beyond their business scopes, investment in security market, offering of entrustment loans or purchase of any investment properties. On June 9, 2016, the Notice of the State Administration of Foreign Exchange on Reforming and Standardizing the Administrative Provisions on Capital Account Foreign Exchange Settlement, or SAFE Circular 16, was promulgated. In addition to restating the general principles of SAFE Circular 19, SAFE Circular 16 explicitly stipulates that foreign debts and repatriated funds raised through

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overseas listings as foreign exchange receipts can be settled discretionally. SAFE Circular 16 continues to prohibit foreign-invested enterprises from using the Renminbi funds converted from their foreign exchange capitals for expenditures beyond their business scopes, investments in security market, offerings of entrustment loans or purchases of any investment properties. Although SAFE Circular 16 further relaxes the control over foreign exchange settlement of capital accounts, in practice, there are still several specific requirements that limit the abilities of PRC enterprises to access the offshore financing capitals, which may adversely affect our business, financial conditions and operating results.

Fluctuations in exchange rates could have a material adverse effect on our results of operations and the price of our ADSs.

The value of the Renminbi against the U.S. dollar and other currencies may fluctuate and is affected by, among other things, changes in political and economic conditions in China and by China’s foreign exchange policies. On July 21, 2005, the PRC government changed its decade-old policy of pegging the value of the Renminbi to the U.S. dollar, and the Renminbi appreciated more than 20% against the U.S. dollar over the following three years. Between July 2008 and June 2010, this appreciation halted and the exchange rate between the Renminbi and the U.S. dollar remained within a narrow band. Since June 2010, the Renminbi has fluctuated against the U.S. dollar, at times significantly and unpredictably. On November 30, 2015, the Executive Board of the International Monetary Fund (IMF) completed the regular five-year review of the basket of currencies that make up the Special Drawing Right, or the SDR, and decided that with effect from October 1, 2016, Renminbi is determined to be a freely usable currency and will be included in the SDR basket as a fifth currency, along with the U.S. dollar, the Euro, the Japanese yen and the British pound. In the fourth quarter of 2016, the Renminbi has depreciated significantly in the backdrop of a surging U.S. dollar and persistent capital outflows of China. With the development of the foreign exchange market and progress towards interest rate liberalization and Renminbi internationalization, the PRC government may in the future announce further changes to the exchange rate system and we cannot assure you that the Renminbi will not appreciate or depreciate significantly in value against the U.S. dollar in the future. It is difficult to predict how market forces or PRC or U.S. government policy may impact the exchange rate between the Renminbi and the U.S. dollar in the future. In addition, the People’s Bank of China may, from time to time, release policies and measures concerning the foreign exchange market to limit fluctuations in Renminbi exchange rates and for other policy considerations.

A substantial portion of our revenues and costs are denominated in Renminbi, whereas our reporting currency is the U.S. dollar. Any significant depreciation of the Renminbi may materially and adversely affect our revenues, earnings and financial position as reported in U.S. dollars. To the extent that we need to convert U.S. dollars we receive from this offering into Renminbi for our operations, appreciation of the Renminbi against the U.S. dollar would have an adverse effect on the Renminbi amount we would receive from the conversion. Conversely, if we decide to convert our Renminbi into U.S. dollars for the purpose of making payments for dividends on our ordinary shares or ADSs or for other business purposes, appreciation of the U.S. dollar against the Renminbi would have an adverse effect on the U.S. dollar amount available to us.

Very limited hedging options are available in China to reduce our exposure to exchange rate fluctuations. To date, we have not entered into any hedging transactions in an effort to reduce our exposure to foreign currency exchange risk. While we may decide to enter into hedging transactions in the future, the availability and effectiveness of these hedges may be limited and we may not be able to adequately hedge our exposure or at all. In addition, our currency exchange losses may be magnified by PRC exchange control regulations that restrict our ability to convert Renminbi into foreign currency.

Governmental control of currency conversion may limit our ability to utilize our revenues effectively and affect the value of your investment.

The PRC government imposes controls on the convertibility of the Renminbi into foreign currencies and, in certain cases, the remittance of currency out of China. We receive a substantial portion of our revenues in

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Renminbi. Under our current corporate structure, our company in the Cayman Islands relies on dividend payments from our PRC subsidiaries and HK subsidiaries to fund any cash and financing requirements we may have. Under existing PRC foreign exchange regulations, payments of current account items, such as profit distributions and trade and service-related foreign exchange transactions, can be made in foreign currencies without prior approval from the SAFE by complying with certain procedural requirements. Therefore, our PRC subsidiaries are able to pay dividends in foreign currencies to us without prior approval from the SAFE, subject to the condition that the remittance of such dividends outside of the PRC complies with certain procedures under PRC foreign exchange regulation, such as the overseas investment registrations by the beneficial owners of our company who are PRC residents. However, approval from or registration with appropriate government authorities is required where the Renminbi is to be converted into foreign currency and remitted out of China to pay capital expenses such as the repayment of loans denominated in foreign currencies, as enterprises shall duly file the cross-border financing contracts according to the Circular of the People’s Bank of China on Matters relating to the Macro-prudential Management of Full-covered Cross-border Financing for the Issuance of Foreign Debts by Enterprise, or Circular on Management of Cross-border Financing, effective on January 10, 2017, and any medium or long term loan to be provided by foreign entities to domestic enterprises must be recorded and registered by the National Development and Reform Committee, or the NDRC, according to the Circular on Promoting the Administrative Reform of the Record-filing and Registration System for the Issuance of Foreign Debts by Enterprises, or Circular on Promoting the Administrative Reform, by the NDRC on September 14, 2015.

In light of the flood of capital outflows of China in 2016 due to the weakening Renminbi, the PRC government has imposed more restrictive foreign exchange policies and stepped up scrutiny of major outbound capital movement. More restrictions and substantial vetting process are put in place by the SAFE to regulate cross-border transactions falling under the capital account. The PRC government may at its discretion further restrict access in the future to foreign currencies for current account transactions. If the foreign exchange control system prevents us from obtaining sufficient foreign currencies to satisfy our foreign currency demands, we may not be able to pay dividends in foreign currencies to our shareholders, including holders of our ADSs.

PRC regulations relating to investments in offshore special purposes companies by PRC residents may subject our PRC-resident beneficial owners or our PRC subsidiaries to liability or penalties, limit our ability to inject capital into our PRC subsidiaries or limit our PRC subsidiaries’ ability to increase their registered capital or distribute profits.

The SAFE promulgated the Circular on Relevant Issues Concerning Foreign Exchange Control on Domestic Residents’ Offshore Investment and Financing and Roundtrip Investment through Special Purpose Vehicles, or SAFE Circular 37, on July 4, 2014. SAFE Circular 37 requires PRC residents to register with the local SAFE branches in connection with their direct establishment or indirect control of any offshore entity, referred to in SAFE Circular 37 as a “special purpose vehicle”, for the purpose of overseas investment and financing with such PRC residents’ legally owned assets or equity interests in domestic enterprises or offshore assets or interests. SAFE Circular 37 requires further registrations in the event of any significant changes with respect to the special purpose vehicle, such as increase or decrease of capital contributed by PRC individuals, share transfer or exchange, merger, division or other material events. In the event that a PRC shareholder holding interests in a special purpose vehicle fails to fulfill this required SAFE registration, the PRC subsidiaries of that special purpose vehicle may be prohibited from making profit distributions to the offshore parent and from carrying out subsequent cross-border foreign exchange activities, and it may be restricted from contributing additional capital into its PRC subsidiaries. Moreover, failure to comply with the various SAFE registration requirements described above could result in liabilities under PRC law for evasion of foreign exchange controls. According to the Notice on Further Simplifying and Improving Policies for the Foreign Exchange Administration of Direct Investment released on February 13, 2015 by the SAFE, local banks shall examine and handle foreign exchange registration for overseas direct investment, including the initial foreign exchange registration and amendment registration under SAFE Circular 37 since June 1, 2015. Beneficial owners of the special purpose vehicle who are PRC citizens are also required to make annual filing with the local banks regarding their overseas direct investment status.

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Certain beneficial owners of our shares who are PRC residents have not completed their registration with the SAFE for their beneficial ownership of our shares. Moreover, we do not have control over our beneficial owners and may not be aware of the identities of all of our beneficial owners. We cannot assure you that all of our PRC-resident beneficial owners comply with SAFE Circular 37 and subsequent implementation rules. The failure of our beneficial owners who are PRC residents to register or amend their foreign exchange registrations in a timely manner pursuant to SAFE Circular 37 and subsequent implementation rules, or the failure of future beneficial owners of our company who are PRC residents to comply with the registration procedures set forth in SAFE Circular 37 and subsequent implementation rules, may subject such beneficial owners or our PRC subsidiaries to fines and legal sanctions. Failure to register or comply with relevant requirements may also limit our ability to contribute capital to our PRC subsidiaries and limit our PRC subsidiaries’ ability to distribute dividends to us. These risks may have a material adverse effect on our business, financial condition and results of operations.

The M&A rules and certain other PRC regulations establish complex procedures for some acquisitions of Chinese companies by foreign investors, which could make it more difficult for us to pursue growth through acquisitions in China.

Among other things, the Regulations on Mergers and Acquisitions of Domestic Enterprises by Foreign Investors, or the M&A rules, established additional procedures and requirements that could make merger and acquisition activities by foreign investors more time-consuming and complex. Such regulation requires, among other things, that the Ministry of Commerce of the People’s Republic of China, or the MOFCOM, be notified in advance of any change-of-control transaction in which a foreign investor acquires control of a PRC domestic enterprise or a foreign company with substantial PRC operations, if certain thresholds under the Provisions on Thresholds for Prior Notification of Concentrations of Undertakings, issued by the State Council in 2008, were triggered. Moreover, the Anti-Monopoly Law promulgated by the Standing Committee of the National People’s Congress of the PRC, which became effective in 2008 requires that transactions which are deemed concentrations and involve parties with specified turnover thresholds must be cleared by the MOFCOM before they can be completed. In addition, the Notice of the General Office of the State Council on Establishing the Security Review System for Mergers and Acquisitions of Domestic Enterprises by Foreign Investors which became effective in September 2011 require acquisitions by foreign investors of PRC companies engaged in military related or certain other industries that are crucial to national security be subject to security review before consummation of any such acquisition. We may pursue potential strategic acquisitions that are complementary to our business and operations. Complying with the requirements of these regulations to complete such transactions could be time-consuming, and any required approval processes, including obtaining approval or clearance from the MOFCOM, may delay or inhibit our ability to complete such transactions, which could affect our ability to expand our business or maintain our market share.

Any failure to comply with PRC regulations regarding the registration requirements for employee stock incentive plans may subject the PRC plan participants or us to fines and other legal or administrative sanctions.

Pursuant to SAFE Circular 37, PRC residents who participate in share incentive plans in overseas non-publicly-listed companies may submit applications to the SAFE or its local branches for the foreign exchange registration with respect to offshore special purpose companies. In the meantime, our directors, executive officers and other employees who are PRC citizens or who are non-PRC residents residing in the PRC for a continuous period of not less than one year, subject to limited exceptions, and who have been granted incentive share awards by us, may follow the Notices on Issues Concerning the Foreign Exchange Administration for Domestic Individuals Participating in Stock Incentive Plan of Overseas Publicly-Listed Company, promulgated by the SAFE in 2012, or the 2012 SAFE Notices. Pursuant to the 2012 SAFE Notices, PRC citizens and non-PRC citizens who reside in China for a continuous period of not less than one year who participate in any stock incentive plan of an overseas publicly listed company, subject to a few exceptions, are required to register with the SAFE through a domestic qualified agent, which could be the PRC subsidiaries of

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such overseas listed company, and complete certain other procedures. In addition, an overseas entrusted institution must be retained to handle matters in connection with the exercise or sale of stock options and the purchase or sale of shares and interests. We and our executive officers and other employees who are PRC citizens or who reside in the PRC for a continuous period of not less than one year and who have been granted options will be subject to these regulations when our company becomes an overseas listed company upon the completion of this offering. Failure to complete the SAFE registrations may subject them to fines, and legal sanctions and may also limit our ability to contribute additional capital into our PRC subsidiaries and limit our PRC subsidiaries’ ability to distribute dividends to us. We also face regulatory uncertainties that could restrict our ability to adopt additional incentive plans for our directors, executive officers and employees under PRC law. See “Regulation — Regulations on Foreign Exchange — Equity Incentive Plans.”

The State Administration of Taxation, or SAT, has issued certain circulars concerning employee share options and restricted shares. Under these circulars, our employees working in China who exercise share options or are granted restricted shares will be subject to PRC individual income tax. Our PRC subsidiaries have obligations to file documents related to employee share options or restricted shares with relevant tax authorities and to withhold individual income taxes of those employees who exercise their share options. If our employees fail to pay or we fail to withhold their income taxes according to relevant laws and regulations, we may face sanctions imposed by the tax authorities or other PRC governmental authorities. See “Regulation — Regulations on Foreign Exchange — Equity Incentive Plans.”

Failure to make adequate contributions to various employee benefit plans as required by PRC regulations may subject us to penalties.

Companies operating in China are required to participate in various government sponsored employee benefit plans, including certain social insurance, housing funds and other welfare-oriented payment obligations, and contribute to the plans in amounts equal to certain percentages of salaries, including bonuses and allowances, of our employees up to a maximum amount specified by the local government from time to time at locations where we operate our businesses. The requirement of employee benefit plans has not been implemented consistently by the local governments in China given the different levels of economic development in different locations. We have not made adequate employee benefit payments. We may be required to make up the contributions for these plans as well as to pay late fees and fines. If we are subject to late fees or fines in relation to the underpaid employee benefits, our financial condition and results of operations may be adversely affected.

If we are classified as a PRC resident enterprise for PRC income tax purposes, such classification could result in unfavorable tax consequences to us and our non-PRC shareholders or ADS holders.

Under the PRC Enterprise Income Tax Law and its implementation rules, an enterprise established outside of the PRC with a “de facto management body” within the PRC is considered a resident enterprise and will be subject to the enterprise income tax on its global income at the rate of 25%. The implementation rules define the term “de facto management body” as the body that exercises full and substantial control over and overall management of the business, productions, personnel, accounts and properties of an enterprise. In April 2009, the SAT issued the Notice Regarding the Determination of Chinese-Controlled Offshore Incorporated Enterprises as PRC Tax Resident Enterprises on the Basis of De Facto Management Bodies, known as Circular 82, which provides certain specific criteria for determining whether the “de facto management body” of a PRC-controlled enterprise that is incorporated offshore is located in China. Although this circular applies only to offshore enterprises controlled by PRC enterprises or PRC enterprise groups, not those controlled by PRC individuals or foreigners like us, the criteria set forth in the circular may reflect the State Administration of Taxation’s general position on how the “de facto management body” test should be applied in determining the tax resident status of all offshore enterprises. According to Circular 82, an offshore incorporated enterprise controlled by a PRC enterprise or a PRC enterprise group will be regarded as a PRC tax resident by virtue of having its “de facto management body” in China and will be subject to PRC enterprise income tax on its global income only if all of the following conditions are met: (i) the primary location of the day-to-day operational management is in the

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PRC; (ii) decisions relating to the enterprise’s financial and human resource matters are made or are subject to approval by organizations or personnel in the PRC; (iii) the enterprise’s primary assets, accounting books and records, company seals, and board and shareholder resolutions, are located or maintained in the PRC; and (iv) at least 50% of voting board members or senior executives habitually reside in the PRC.

We believe none of our entities outside of China is a PRC resident enterprise for PRC tax purposes. See “Taxation — People’s Republic of China Taxation.” However, the tax resident status of an enterprise is subject to determination by the PRC tax authorities and uncertainties remain with respect to the interpretation of the term “de facto management body. As a majority of our management members are based in China, it remains unclear how the tax residency rule will apply to our case. If the PRC tax authorities determine that iClick Interactive Asia Group Limited or any of our subsidiaries outside of China is a PRC resident enterprise for PRC enterprise income tax purposes, then iClick Interactive Asia Group Limited or such subsidiary could be subject to PRC tax at a rate of 25% on its world-wide income, which could materially reduce our net income. In addition, we will also be subject to PRC enterprise income tax reporting obligations. Furthermore, income and any gains realized in respect to our ordinary shares or ADSs may be deemed by the PRC tax authorities as income or gain, as the case may be, arising from sources within the PRC, as described immediately below.

You may be subject to PRC income tax on dividends from us or on any gain realized on the transfer of our ordinary shares.

Under the EIT Law and its implementation rules, subject to any applicable tax treaty or similar arrangement between the PRC and our shareholders’ jurisdictions of residence that provide for a different income tax arrangement, PRC withholding tax at the rate of 10% is generally applicable to dividends from PRC sources paid to shareholders that are non-PRC resident enterprises, which do not have an establishment or place of business in the PRC, or which have such establishment or place of business but the relevant income is not effectively connected with the establishment or place of business. Any gain realized on the transfer of shares by such shareholders is subject to 10% PRC income tax if such gain is regarded as income derived from sources within the PRC unless a treaty or similar arrangement otherwise provides. Under the PRC Individual Income Tax Law and its implementation rules, dividends from sources within the PRC paid to foreign individual investors who are not PRC residents are generally subject to a PRC withholding tax at a rate of 20% and gains from PRC sources realized by such investors on the transfer of shares are generally subject to 20% PRC income tax, in each case, subject to any reduction or exemption set forth in applicable tax treaties and PRC laws.

As described in the preceding risk factor, there is a risk that we will be treated by the PRC tax authorities as a PRC tax resident enterprise. In that case, dividend income and gains from sales of our shares or ADSs may be treated as PRC source income or gains subject to the PRC taxes described above.

If PRC income tax is imposed on gains realized on the transfer of our ordinary shares or ADSs or on dividends paid to our non-resident shareholders or ADS holders, the value of your investment in our ordinary shares or ADSs may be materially and adversely affected. Furthermore, our shareholders or ADS holders whose jurisdictions of residence have tax treaties or arrangements with China may not qualify for benefits under such tax treaties or arrangements.

Value-added tax, or VAT, is imposed to replace the business tax, which could result in unfavorable tax consequences to us.

The Ministry of Finance and the SAT promulgated the Circular on the Inclusion of the Railway Transportation Industry and Postal Service Industry in the Pilot Collection of Value-added Tax to Replace Business Tax, or Circular 106. Pursuant to Circular 106, starting from January 1, 2014, a VAT rate of 6% applies to revenue derived from the provision of express delivery services, and a VAT rate of 11% applies to revenue derived from provision of transportation services, which is higher than the previously applicable 5% and 3% business tax rate. In 2016, the Ministry of Finance and the SAT promulgated the Circular on Comprehensively

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Promoting the Pilot Program of the Collection of Value-added Tax to Replace Business Tax, or Circular 36. Circular 36 took effect as of May 1, 2016 and superseded Circular 106 on the same date. Circular 36 expanded the application of VAT in replacement business tax to enterprises engaging in the building industry, the real estate industry, the financial industry and the life service industry on a nationwide basis. According to Circular 36, the VAT rates applicable to revenue derived from the provision of express delivery services and revenue derived from provision of transportation services remain the same (6% and 11% respectively) as those under Circular 106. Although a taxpayer is allowed to offset the qualified input VAT paid on taxable purchases against the output VAT chargeable on the revenue from services provided, our effective tax rate could be higher. The replacement of the business tax with a VAT on our services could result in unfavorable tax consequences to us. See “Regulation — Regulations on Tax — Value Added Tax.”

We may not be able to obtain certain benefits under relevant tax treaty on dividends paid by our PRC subsidiaries to us through our Hong Kong subsidiaries.

We are an exempted limited liability company, used as holding company, incorporated under the laws of the Cayman Islands and as such rely on dividends and other distributions on equity from our PRC subsidiaries, as paid to us through our Hong Kong subsidiaries, to satisfy part of our liquidity requirements. Pursuant to the PRC Enterprise Income Tax Law, a withholding tax rate of 10% currently applies to dividends paid by a PRC “resident enterprise” to a foreign enterprise investor, unless any such foreign investor’s jurisdiction of incorporation has a tax treaty with China that provides for preferential tax treatment. Pursuant to the Arrangement between the Mainland China and the Hong Kong Special Administrative Region for the Avoidance of Double Taxation and Tax Evasion on Income, or the Double Tax Avoidance Arrangement, and Circular 81 issued by the State Administration of Taxation, such withholding tax rate may be lowered to 5% if the PRC enterprise is at least 25% held by a Hong Kong enterprise throughout the 12 months prior to distribution of the dividends and is determined by the relevant PRC tax authority to have satisfied other requirements. Furthermore, under the Administrative Measures for Non-Resident Enterprises to Enjoy Treatments under Tax Treaties, which became effective in August 2015, the non-resident enterprises shall determine whether they are qualified for preferential tax treatment under the tax treaties and file relevant reports and materials with the tax authorities. There are also other conditions for benefiting from the reduced withholding tax rate according to other relevant tax rules and regulations. See “Taxation — People’s Republic of China Taxation.” We cannot assure you that our determination regarding our Hong Kong subsidiaries’ qualification to benefit from the preferential tax treatment will not be challenged by the relevant PRC tax authority or that we will be able to complete the necessary filings with the relevant PRC tax authority and benefit from the preferential withholding tax rate of 5% under the Double Taxation Avoidance Arrangement with respect to dividends to be paid by our PRC subsidiaries to our Hong Kong subsidiaries.

We face uncertainties with respect to indirect transfers of equity interests in PRC resident enterprises by their non-PRC holding companies.

Pursuant to the Notice on Strengthening Administration of Enterprise Income Tax for Share Transfers by Non-PRC Resident Enterprises, or SAT Circular 698, issued by the SAT in 2009 with retroactive effect from January 1, 2008, where a non-resident enterprise transfers the equity interests of a PRC resident enterprise indirectly by disposition of the equity interests of an overseas holding company, or an Indirect Transfer, and such overseas holding company is located in a tax jurisdiction that: (a) has an effective tax rate less than 12.5% or (b) does not tax foreign income of its residents, the non-resident enterprise, being the transferor, shall report to the competent tax authority of the PRC resident enterprise this Indirect Transfer.

On February 3, 2015, the SAT issued a Public Notice Regarding Certain Corporate Income Tax Matters on Indirect Transfer of Properties by Non-Resident Enterprises, or SAT Public Notice 7. SAT Public Notice 7 supersedes the rules with respect to the Indirect Transfer under SAT Circular 698, but does not touch upon the other provisions of SAT Circular 698, which remain in force. SAT Public Notice 7 has introduced a new tax regime that is significantly different from the previous one under SAT Circular 698 (Article V and Article VI).

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SAT Public Notice 7 extends its tax jurisdiction to not only Indirect Transfers set forth under SAT Circular 698 but also transactions involving transfer of other taxable assets through offshore transfer of a foreign intermediate holding company. In addition, SAT Public Notice 7 provides clearer criteria than SAT Circular 698 for assessment of reasonable commercial purposes and has introduced safe harbors for internal group restructurings and the purchase and sale of equity through a public securities market. SAT Public Notice 7 also brings challenges to both foreign transferor and transferee (or other person who is obligated to pay for the transfer) of taxable assets. Where a non-resident enterprise transfers taxable assets indirectly by disposing of the equity interests of an overseas holding company (other than by way of sale of equity securities traded on a public market), which is an Indirect Transfer, the non-resident enterprise as either transferor or transferee, or the PRC entity that directly owns the taxable assets, may report such Indirect Transfer to the relevant tax authority. Using a “substance over form” principle, the PRC tax authority may disregard the existence of the overseas holding company if it lacks a reasonable commercial purpose and was established for the purpose of reducing, avoiding or deferring PRC tax. As a result, gains derived from such Indirect Transfer may be subject to PRC enterprise income tax, and will the applicable taxes be withheld from payments to the transferor, currently at a rate of 10%. Both the transferor and the PRC entity that directly owns the taxable assets, or the withhold agent, may be subject to penalties under PRC tax laws if the withhold agent fails to withhold the taxes and the transferor fails to pay the taxes.

We face uncertainties as to the reporting and other implications of certain past and future transactions where PRC taxable assets are involved, such as offshore restructuring, sale of the shares in our offshore subsidiaries or investments. Our company may be subject to filing obligations or taxed or subject to withholding obligations in such transactions, under SAT Circular 698 and SAT Public Notice 7. For transfer of shares in our company by investors that are non-PRC resident enterprises, our PRC subsidiaries may be requested to assist in the filing under SAT Circular 698 and SAT Public Notice 7. As a result, we may be required to expend valuable resources to comply with SAT Circular 698 and SAT Public Notice 7 or to request the relevant transferors from whom we purchase taxable assets to comply with these circulars, or to establish that our company should not be taxed under these circulars, which may have a material adverse effect on our financial condition and results of operations.

The audit report included in this prospectus has been issued by auditors whose work, in part, is outside the scope of inspection by the PCAOB and, as such, you may be deprived of the benefits of such inspection with respect to such work.

Our independent registered public accounting firm that issues the audit reports included in this prospectus, as an auditor of companies that are traded publicly in the United States and a firm registered with the PCAOB, is required by the laws of the United States to undergo regular inspections by the PCAOB to assess its compliance with the laws of the United States and professional standards. The PCAOB is currently unable to inspect the audit work of our independent registered public accounting firm with respect to our operations in mainland China without the approval of certain Chinese authorities. In May 2013, PCAOB announced that it had entered into a Memorandum of Understanding on Enforcement Cooperation with the China Securities Regulatory Commission, or the CSRC, and the Ministry of Finance, which establishes a cooperative framework between the parties for the production and exchange of audit documents relevant to investigations undertaken by PCAOB, the CSRC, or the Ministry of Finance in the United States and the PRC, respectively. PCAOB continues to be in discussions with the CSRC and the Ministry of Finance to permit joint inspections in the PRC of audit firms that are registered with PCAOB and audit US listed Chinese companies.

Inspections of audit firms that the PCAOB has conducted outside mainland China have identified deficiencies in those firms’ audit procedures and quality control procedures, which may be addressed as part of the inspection process to improve future audit quality. The PCAOB’s current inability to conduct inspections in mainland China prevents the PCAOB from regularly evaluating our auditor’s audit procedures and quality control procedures as they relate to our operations in mainland China, where our revenues are derived. As a result, investors may be deprived of the benefits of such regular PCAOB inspections and may lose confidence in our reported financial information and the quality of our financial statements.

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Proceedings instituted by the SEC against the “big four” PRC-based accounting firms, including our independent registered public accounting firm, could result in financial statements being determined to not be in compliance with the requirements of the Exchange Act.

In late 2012, the SEC commenced administrative proceedings under Rule 102(e) of its Rules of Practice and also under the Sarbanes-Oxley Act against the Chinese affiliates of the “big four” accounting firms (including our auditors). The Rule 102(e) proceedings initiated by the SEC relate to these firms’ inability to produce documents, including audit work papers, in response to the request of the SEC pursuant to Section 106 of the Sarbanes-Oxley Act, as the auditors located in the PRC are not in a position lawfully to produce documents directly to the SEC because of restrictions under PRC law and specific directives issued by the China Securities Regulatory Commission, or the CSRC. The issues raised by the proceedings are not specific to our auditors or to us, but affect equally all audit firms based in China and all China-based businesses with securities listed in the United States.

Risks Related to This Offering and Our American Depositary Shares

An active trading market for our ordinary shares or our ADSs may not develop and the trading price for our ADSs may fluctuate significantly, you may not be able to resell the ADSs at or above the public offering price.

We expect to list our ADSs on the NASDAQ Global Market. We have no current intention to seek a listing for our ordinary shares on any stock exchange. Prior to the completion of this offering, there has been no public market for our ADSs or our ordinary shares, and we cannot assure you that a liquid public market for our ADSs will develop. If an active public market for our ADSs does not develop following the completion of this offering, the market price and liquidity of our ADSs may be materially and adversely affected. The initial public offering price for our ADSs will be determined by negotiation between us and the underwriters based upon several factors. We can provide no assurance that the trading price of our ADSs after this offering will not decline below the initial public offering price. As a result, investors in our securities may experience a significant decrease in the value of their ADSs.

The market price for our ADSs may be volatile.

The trading prices of our ADSs are likely to be volatile and could fluctuate widely due to factors beyond our control. This may happen because of broad market and industry factors, like the performance and fluctuation in the market prices or the underperformance or deteriorating financial results of other listed internet or other companies based in China that have listed their securities in the United States in recent years. The securities of some of these companies have experienced significant volatility since their initial public offerings, including, in some cases, substantial price declines in their trading prices. The trading performances of other Chinese companies’ securities after their offerings may affect the attitudes of investors toward Chinese companies listed in the United States, which consequently may impact the trading performance of our ADSs, regardless of our actual operating performance. In addition, any negative news or perceptions about inadequate corporate governance practices or fraudulent accounting, corporate structure or other matters of other Chinese companies may also negatively affect the attitudes of investors towards Chinese companies in general, including us, regardless of whether we have conducted any inappropriate activities. Furthermore, securities markets may from time to time experience significant price and volume fluctuations that are not related to our operating performance, such as the large decline in share prices in the United States, China and other jurisdictions in late 2008, early 2009 and the second half of 2011, which may have a material adverse effect on the market price of our ADSs.

In addition to the above factors, the price and trading volume of our ADSs may be highly volatile due to multiple other factors, including the following:

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Any of these factors may result in large and sudden changes in the volume and price at which our ADSs will trade.

In the past, shareholders of public companies have often brought securities class action suits against those companies following periods of instability in the market price of their securities. If we were involved in a class action suit, it could divert a significant amount of our management’s attention and other resources from our business and operations and require us to incur significant expenses to defend the suit, which could harm our results of operations. Any such class action suit, whether or not successful, could harm our reputation and restrict our ability to raise capital in the future. In addition, if a claim is successfully made against us, we may be required to pay significant damages, which could have a material adverse effect on our financial condition and results of operations.

You must rely on the judgment of our management as to the use of the net proceeds from this offering, and such use may not produce income or increase our ADS price.

We plan to use the net proceeds from this offering for the following purposes: (i) approximately [US$35] million of the net proceeds for research and development and expansion of our suite of solutions and service offerings; and (ii) approximately [US$15] million of the net proceeds for sales and marketing. We also plan to use the net proceeds in investment, acquisition and business collaboration opportunities that complement or enhance our existing operations and are strategically beneficial to our long-term goals, although we have no present commitments or agreements to enter into any investment, acquisition or business collaboration. We will use the remaining portion of the net proceeds we receive from this offering for general corporate purposes. See “Use of Proceeds.” However, our management will have considerable discretion in the application of the net proceeds received by us. You will not have the opportunity, as part of your investment decision, to assess whether proceeds are being used appropriately. The net proceeds may be used for corporate purposes that do not improve our efforts to achieve or maintain profitability or increase our ADS price. The net proceeds from this offering may be placed in investments that do not produce income or that lose value.

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Our dual-class share structure with different voting rights will limit your ability to influence corporate matters and could discourage others from pursuing any change of control transactions that holders of our Class A ordinary shares and ADSs may view as beneficial.

Immediately prior to the completion of this offering, our ordinary shares will consist of Class A ordinary shares and Class B ordinary shares. In respect of matters requiring the votes of shareholders, holders of Class A ordinary shares will be entitled to one vote per share, while holders of Class B ordinary shares will be entitled to 20 votes per share based on our proposed dual-class share structure. We will sell Class A ordinary shares represented by our ADSs in this offering. Each Class B ordinary share is convertible into one Class A ordinary share at any time by the holder thereof, while Class A ordinary shares are not convertible into Class B ordinary shares under any circumstances. Upon any transfer of Class B ordinary shares by a holder thereof to any person or entity which is not an affiliate of such holder, such Class B ordinary shares shall be automatically and immediately converted into the equal number of Class A ordinary shares.

Immediately prior to the completion of this offering all of the then outstanding ordinary shares held by Mr. Sammy Hsieh and Mr. Jian Tang will be re-designated as Class B ordinary shares. Mr. Hsieh and Mr. Tang, who beneficially own 21.8% of the aggregate voting power of our company as of the date of this prospectus, will beneficially own approximately         % of the aggregate voting power of our company immediately after the completion of this offering due to the disparate voting powers associated with our dual-class share structure, assuming the underwriters do not exercise their over-allotment option. See “Principal Shareholders.” As a result of the dual-class share structure and the concentration of ownership, Mr. Hsieh and Mr. Tang will have considerable influence over matters such as decisions regarding change of directors, mergers, change of control transactions and other significant corporate actions. They may take actions that are not in the best interest of us or our other shareholders. This concentration of ownership may discourage, delay or prevent a change in control of our company, which could have the effect of depriving our other shareholders of the opportunity to receive a premium for their shares as part of a sale of our company and may reduce the price of our ADSs. This concentrated control will limit your ability to influence corporate matters and could discourage others from pursuing any potential merger, takeover or other change of control transactions that holders of Class A ordinary shares and ADSs may view as beneficial.

Our directors, officers and principal shareholders have substantial influence over our company and their interests may not be aligned with the interests of our other shareholders.

Our directors and officers will collectively own an aggregate of        % of the total voting power of our outstanding ordinary shares immediately upon completion of this offering, assuming the underwriters do not exercise their over-allotment option. As a result, they have substantial influence over our business, including significant corporate actions such as change of directors, mergers, change of control transactions and other significant corporate actions.

They may take actions that are not in the best interest of us or our other shareholders. This concentration of ownership may discourage, delay or prevent a change in control of our company, which could deprive our shareholders of an opportunity to receive a premium for their shares as part of a sale of our company and may reduce the price of the ADSs. These actions may be taken even if they are opposed by our other shareholders, including those who purchase ADSs in this offering. In addition, the significant concentration of share ownership may adversely affect the trading price of the ADSs due to investors’ perception that conflicts of interest may exist or arise. For more information regarding our principal shareholders and their affiliated entities, see “Principal Shareholders.”

We have granted, and may continue to grant, share incentives, which may result in increased share based compensation expenses.

We adopted a stock option plan in 2010, or the 2010 Plan. We adopted another share incentive plan in 2017, or the 2017 Plan, in October 2017. The purpose of these plans is to grant share-based compensation awards to

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employees, directors and advisors to incentivize their performance and align their interests with ours. In addition, in December 2016, our board of directors and shareholders authorized the issuance of 1,068,114 ordinary shares to Jian Tang and certain other employees in China upon the fulfillment of certain performance conditions in 2017, and the issuance of 801,086 ordinary shares to Jian Tang and certain other employees in China upon the fulfillment of certain performance conditions in 2018.

We account for compensation costs for all share incentives using a fair-value based method and recognize expenses in our consolidated statements of comprehensive income in accordance with U.S. GAAP. Under our 2010 Plan, the maximum aggregate number of ordinary shares which may be issued pursuant to all awards under the plan is 2,398,137. As of the date of this prospectus, options to purchase 1,970,881 ordinary shares have been granted and outstanding, 668,690 of which are not vested, 1,029,436 are fully vested but not exercised, and 272,755 have been exercised. Under the 2017 Plan that will be effective upon the completion of this offering, the maximum number of ordinary shares which may be issued pursuant to all awards under the plan shall initially be 1,000,000, plus an annual increase on the first day of each of our fiscal year during the term of the 2017 Plan commencing with the fiscal year beginning January 1, 2018, by an amount equal to the least of (i) 0.5% of the total number of Class A ordinary shares issued and outstanding on the last day of the immediately preceding fiscal year; (ii) 150,000 Class A ordinary shares or (iii) such number of Class A ordinary shares as may be determined by our board of directors. All of these shares will be Class A ordinary shares. We believe the granting of share-based compensation is of significant importance to our ability to attract and retain key personnel and employees, and we will continue to grant share based compensation to them in the future. As a result, our expenses associated with share-based compensation may increase, which may have an adverse effect on our results of operations.

If securities or industry analysts do not publish research or publish inaccurate or unfavorable research about our business, the market price for our ADSs and trading volume could decline.

The trading market for our ADSs will depend in part on the research and reports that securities or industry analysts publish about us or our business. If research analysts do not establish and maintain adequate research coverage or if one or more of the analysts who cover us downgrade our ADSs or publish inaccurate or unfavorable research about our business, the market price for our ADSs would likely decline. If one or more of these analysts cease coverage of our company or fail to publish reports on us regularly, we could lose visibility in the financial markets, which, in turn, could cause the market price or trading volume for our ADSs to decline.

The sale or availability for sale of substantial amounts of our ADSs could adversely affect their market price.

Sales of substantial amounts of our ADSs in the public market after the completion of this offering, or the perception that these sales could occur, could adversely affect the market price of our ADSs and could materially impair our ability to raise capital through equity offerings in the future. The ADSs sold in this offering will be freely tradable without restriction or further registration under the Securities Act, and shares held by our existing shareholders may also be sold in the public market in the future subject to the restrictions in Rule 144 and Rule 701 under the Securities Act and the applicable lock-up agreements. There will be                ADSs (representing                 Class A ordinary shares) outstanding immediately after this offering, or                ADSs (representing                Class A ordinary shares) if the underwriters exercise their over-allotment option in full.

In connection with this offering, we, our directors and officers and our existing shareholders have agreed not to sell any ordinary shares or ADSs for 180 days after the date of this prospectus without the prior written consent of the underwriters, subject to certain exceptions. However, the underwriters may release these securities from these restrictions at any time, subject to applicable regulations of the Financial Industry Regulatory Authority, Inc. We cannot predict what effect, if any, market sales of securities held by our significant shareholders or any other shareholder or the availability of these securities for future sale will have on the market price of our ADSs. See “Underwriting” and “Shares Eligible for Future Sale” for a more detailed description of the restrictions on selling our securities after this offering.

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Because we do not expect to pay dividends in the foreseeable future after this offering, you must rely on price appreciation of our ADSs for return on your investment.

We currently intend to retain most, if not all, of our available funds and any future earnings after this offering to fund the development and growth of our business. As a result, we do not expect to pay any cash dividends in the foreseeable future. Therefore, you should not rely on an investment in our ADSs as a source for any future dividend income.

Our board of directors has discretion as to whether to distribute dividends, subject to certain restrictions under Cayman Islands law, namely that our company may only pay dividends out of profits or share premium, and provided always that in no circumstances may a dividend be paid if this would result in our company being unable to pay its debts as they fall due in the ordinary course of business. In addition, our shareholders may by ordinary resolution declare a dividend, but no dividend may exceed the amount recommended by our board of directors. Even if our board of directors decides to declare and pay dividends, the timing, amount and form of future dividends, if any, will depend on, among other things, our future results of operations and cash flow, our capital requirements and surplus, the amount of distributions, if any, received by us from our subsidiaries, our financial condition, contractual restrictions and other factors deemed relevant by our board of directors. Accordingly, the return on your investment in our ADSs will likely depend entirely upon any future price appreciation of our ADSs. There is no guarantee that our ADSs will appreciate in value after this offering or even maintain the price at which you purchased the ADSs. You may not realize a return on your investment in our ADSs and you may even lose your entire investment in our ADSs.

The approval of the China Securities Regulatory Commission may be required in connection with this offering under PRC law.

The M&A rules requires an overseas special purpose vehicle formed for listing purposes through acquisitions of PRC domestic companies and controlled by PRC companies or individuals to obtain the approval of the CSRC, prior to the listing and trading of such special purpose vehicle’s securities on an overseas stock exchange. The interpretation and application of the regulations remain unclear, and this offering may ultimately require approval from the CSRC. If CSRC approval is required, it is uncertain whether it would be possible for us to obtain the approval and any failure to obtain or delay in obtaining CSRC approval for this offering would subject us to sanctions imposed by the CSRC and other PRC regulatory agencies.

Our PRC counsel, Jingtian & Gongcheng, has advised us based on their understanding of the current PRC law, rules and regulations that the CSRC’s approval is not required for the listing and trading of our ADSs on the NASDAQ Global Market in the context of this offering, given that:

However, our PRC legal counsel has further advised us that there remains some uncertainty as to how the M&A rules will be interpreted or implemented in the context of an overseas offering and its opinions summarized above are subject to any new laws, rules and regulations or detailed implementations and interpretations in any form relating to the M&A rules. We cannot assure you that relevant PRC governmental agencies, including the CSRC, would reach the same conclusion as we do. If it is determined that CSRC approval is required for this offering, we may face sanctions by the CSRC or other PRC regulatory agencies for failure to seek CSRC approval for this offering. These sanctions may include fines and penalties on our operations in the PRC, limitations on our operating privileges in the PRC, delays in or restrictions on the repatriation of the proceeds from this offering into the PRC, restrictions on or prohibition of the payments or remittance of dividends by our PRC subsidiaries, or other actions that could have a material and adverse effect on our business,

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financial condition, results of operations, reputation and prospects, as well as the trading price of our ADSs. The CSRC or other PRC regulatory agencies may also take actions requiring us, or making it advisable for us, to halt this offering before the settlement and delivery of the ADSs that we are offering. Consequently, if you engage in market trading or other activities in anticipation of and prior to the settlement and delivery of the ADSs we are offering, you would be doing so at the risk that the settlement and delivery may not occur. In addition, if the CSRC or other regulatory agencies later promulgate new rules or explanations requiring that we obtain their approvals for this offering, we may be unable to obtain a waiver of such approval requirements, if and when procedures are established to obtain such a waiver. Any uncertainties and/or negative publicity regarding such approval requirement could have a material adverse effect on the trading price of the ADSs.

The post-offering amended and restated memorandum and articles of association that we adopted effective immediately prior to the completion of this offering will contain anti-takeover provisions that could discourage a third party from acquiring us and adversely affect the rights of holders of our Class A ordinary shares and ADSs.

We adopted an amended and restated memorandum and articles of association that will become effective immediately prior to the completion of this offering. The post-offering amended and restated memorandum and articles of association will contain certain provisions that could limit the ability of others to acquire control of our company, including a dual-class share structure that gives greater voting power to the Class B ordinary shares beneficially owned by Mr. Sammy Hsieh and Mr. Jian Tang and a provision that grants authority to our board of directors to establish and issue from time to time one or more series of preferred shares without action by our shareholders and to determine, with respect to any series of preferred shares, the terms and rights of that series. These provisions could have the effect of depriving our shareholders and ADSs holders of the opportunity to sell their shares or ADSs at a premium over the prevailing market price by discouraging third parties from seeking to obtain control of our company in a tender offer or similar transactions.

As a company incorporated in the Cayman Islands, we will adopt certain home country practices in relation to corporate governance matters that differ significantly from the NASDAQ corporate governance requirements; these practices may afford less protection to shareholders than they would enjoy if we complied fully with the NASDAQ corporate governance requirements.

As a Cayman Islands company listed on the NASDAQ Global Market, we are subject to the NASDAQ corporate governance requirements. However, NASDAQ Global Market rules permit a foreign private issuer like us to follow the corporate governance practices of its home country. Certain corporate governance practices in the Cayman Islands, which is our home country, may differ significantly from the NASDAQ corporate governance requirements. Upon the completion of this offering, we will follow our home country practices and rely on certain exemptions provided by the Nasdaq Stock Market Rules to a foreign private issuer, including exemptions from the requirements to have:

As a result of our reliance on the corporate governance exemptions available to foreign private issuers, you will not have the same protection afforded to shareholders of companies that are subject to all of Nasdaq’s corporate governance requirements.

You may face difficulties in protecting your interests, and your ability to protect your rights through U.S. courts may be limited, because we are incorporated under Cayman Islands law.

We are an exempted limited liability company incorporated under the laws of the Cayman Islands. Our corporate affairs are governed by our memorandum and articles of association, the Companies Law (2016

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Revision) of the Cayman Islands and the common law of the Cayman Islands. The rights of shareholders to take action against the directors, actions by minority shareholders and the fiduciary duties of our directors to us under Cayman Islands law are to a large extent governed by the common law of the Cayman Islands. The common law of the Cayman Islands is derived in part from comparatively limited judicial precedent in the Cayman Islands as well as from the common law of England, the decisions of whose courts are of persuasive authority, but are not binding, on a court in the Cayman Islands. The rights of our shareholders and the fiduciary duties of our directors under Cayman Islands law are not as clearly established as they would be under statutes or judicial precedent in some jurisdictions in the United States. In particular, the Cayman Islands has a less developed body of securities laws than the United States. Some U.S. states, such as Delaware, have more fully developed and judicially interpreted bodies of corporate law than the Cayman Islands. In addition, Cayman Islands companies may not have standing to initiate a shareholder derivative action in a federal court of the United States.

Shareholders of Cayman Islands exempted companies like us have no general rights under Cayman Islands law to inspect corporate records or to obtain copies of lists of shareholders of these companies. Our directors will have discretion under our post-offering amended and restated memorandum and articles of association, to determine whether or not, and under what conditions, our corporate records may be inspected by our shareholders, but are not obliged to make them available to our shareholders. This may make it more difficult for you to obtain the information needed to establish any facts necessary for a shareholder resolution or to solicit proxies from other shareholders in connection with a proxy contest.

As a result of all of the above, our public shareholders may have more difficulty in protecting their interests in the face of actions taken by management, members of the board of directors or controlling shareholders than they would as public shareholders of a company incorporated in the United States. For a discussion of significant differences between the provisions of the Companies Law (2016 Revision) of the Cayman Islands and the laws applicable to companies incorporated in the United States and their shareholders, see “Description of Share Capital — Differences in Corporate Law.”

Certain judgments obtained against us, our directors or officers by our shareholders may not be enforceable.

We are an exempted limited liability company incorporated under the laws of the Cayman Islands. We conduct substantially all of our operations in China and substantially all of our assets are located in China. In addition, a majority of our directors and executive officers reside within China, and most of the assets of these persons are located within China. As a result, it may be difficult or impossible for you to effect service of process within the United States upon these individuals, or to bring an action against us or against these individuals in the United States in the event that you believe your rights have been infringed under the U.S. federal securities laws or otherwise. Even if you are successful in bringing an action of this kind, the laws of the Cayman Islands and of the PRC may render you unable to enforce a judgment against our assets or the assets of our directors and officers. For more information regarding the relevant laws of the Cayman Islands and China, see “Enforceability of Civil Liabilities.”

The voting rights of holders of ADSs are limited by the terms of the deposit agreement, and you may not be able to exercise your right to vote your Class A ordinary shares.

As a holder of our ADSs, you will only be able to exercise the voting rights with respect to the underlying Class A ordinary shares in accordance with the provisions of the deposit agreement. Under the deposit agreement, you must vote by giving voting instructions to the depositary. If we ask for your instructions, then upon receipt of your voting instructions, the depositary will try to vote the underlying Class A ordinary shares in accordance with these instructions. If we do not instruct the depositary to ask for your instructions, the depositary may still vote in accordance with instructions you give, but it is not required to do so. You will not be able to directly exercise your right to vote with respect to the underlying shares unless you withdraw the shares. When a general meeting is convened, you may not receive sufficient advance notice to withdraw the shares underlying your ADSs to allow you to vote with respect to any specific matter. If we ask for your instructions, the depositary

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will notify you of the upcoming vote and will arrange to deliver our voting materials to you. We have agreed to give the depositary at least 30 days’ prior notice of shareholder meetings. Nevertheless, we cannot assure you that you will receive the voting materials in time to ensure that you can instruct the depositary to vote your shares. In addition, the depositary and its agents are not responsible for failing to carry out voting instructions or for their manner of carrying out your voting instructions. This means that you may not be able to exercise your right to vote and you may have no legal remedy if the shares underlying your ADSs are not voted as you requested.

Except in limited circumstances, the depositary for our ADSs will give us a discretionary proxy to vote our Class A ordinary shares underlying your ADSs if you do not vote at shareholders’ meetings, which could adversely affect your interests.

Under the deposit agreement for our ADSs, to the extent we have provided the depositary with at least 40 days’ notice of a proposed meeting, if voting instructions are not timely received by the depositary from you, you shall be deemed to have instructed the depositary to give a discretionary proxy to a person designated by us to vote the shares represented by you ADSs as desired. However, no such instruction shall be deemed given and no discretionary proxy shall be given (a) if we inform the depositary in writing that (i) we do not wish such proxy to be given, (ii) substantial opposition exists with respect to any agenda item for which the proxy would be given or (iii) the agenda item in question, if approved, would materially or adversely affect the rights of holders of shares and (b) unless we have provided the depositary with an opinion of our counsel to the effect that (a) the granting of such discretionary proxy does not subject the depositary to any reporting obligations in the Cayman Islands, (b) the granting of such proxy will not result in a violation of any applicable law, public rule or regulation in force in the Cayman Islands and (c) the courts of the Cayman Islands will give effect to the voting arrangement and deemed instruction as contemplated in the proxy under Cayman Islands law.

The effect of this discretionary proxy is that, if you fail to give voting instructions to the depositary as to how to vote the Class A ordinary shares underlying your ADSs at any particular shareholders’ meeting, you cannot prevent our Class A ordinary shares underlying your ADSs from being voted at that meeting, absent the situations described above, and it may make it more difficult for shareholders to influence our management. Holders of our Class A ordinary shares are not subject to this discretionary proxy.

Your rights to pursue claims against the depositary as a holder of ADSs are limited by the terms of the deposit agreement and the deposit agreement may be amended or terminated without your consent.

Under the deposit agreement, any action or proceeding against or involving the depositary, arising out of or based upon the deposit agreement or the transactions contemplated thereby or by virtue of owning the ADSs may only be instituted in a state or federal court in New York, New York, and you, as a holder of our ADSs, will have irrevocably waived any objection which you may have to the laying of venue of any such proceeding, and irrevocably submitted to the exclusive jurisdiction of such courts in any such action or proceeding. However, the depositary may, in its sole discretion, require that any dispute or difference arising from the relationship created by the deposit agreement be referred to and finally settled by an arbitration conducted under the terms described in the deposit agreement. Also, we may amend or terminate the deposit agreement without your consent. If you continue to hold your ADSs after an amendment to the deposit agreement, you agree to be bound by the deposit agreement as amended. See “Description of American Depositary Shares” for more information.

Your right to participate in any future rights offerings may be limited, which may cause dilution to your holdings.

We may from time to time distribute rights to our shareholders, including rights to acquire our securities. However, we cannot make such rights available to you in the United States unless we register both the rights and the securities to which the rights relate under the Securities Act or an exemption from the registration requirements is available. Under the deposit agreement, the depositary will not make rights available to you

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unless both the rights and the underlying securities to be distributed to ADS holders are either registered under the Securities Act or exempt from registration under the Securities Act. We are under no obligation to file a registration statement with respect to any such rights or securities or to endeavor to cause such a registration statement to be declared effective and we may not be able to establish a necessary exemption from registration under the Securities Act. Accordingly, you may be unable to participate in our rights offerings in the future and may experience dilution in your holdings.

You may not receive dividends or other distributions on our Class A ordinary shares and you may not receive any value for them, if it is illegal or impractical to make them available to you.

The depositary of our ADSs has agreed to pay to you the cash dividends or other distributions it or the custodian receives on Class A ordinary shares or other deposited securities underlying our ADSs, after deducting its fees and expenses. You will receive these distributions in proportion to the number of Class A ordinary shares your ADSs represent. However, the depositary is not responsible if it decides that it is unlawful or impractical to make a distribution available to any holders of ADSs. For example, it would be unlawful to make a distribution to a holder of ADSs if it consists of securities that require registration under the Securities Act but that are not properly registered or distributed under an applicable exemption from registration. The depositary may also determine that it is not feasible to distribute certain property through the mail. Additionally, the value of certain distributions may be less than the cost of mailing them. In these cases, the depositary may determine not to distribute such property. We have no obligation to register under U.S. securities laws any ADSs, Class A ordinary shares, rights or other securities received through such distributions. We also have no obligation to take any other action to permit the distribution of ADSs, Class A ordinary shares, rights or anything else to holders of ADSs. This means that you may not receive distributions we make on our Class A ordinary shares or any value for them if it is illegal or impractical for us to make them available to you. These restrictions may cause a material decline in the value of our ADSs.

Because our initial public offering price is substantially higher than our net tangible book value per ordinary share, you will experience immediate and substantial dilution.

If you purchase ADSs in this offering, you will pay more for your ADSs than the amount paid by our existing shareholders for their ordinary shares on a per ADS basis. As a result, you will experience immediate and substantial dilution of US$                per ADS, representing the difference between the assumed initial public offering price of US$                per ADS, the midpoint of the estimated range of the initial public offering price, and our net tangible book value per ADS of US$                as of September 30, 2017, after giving effect to the net proceeds to us from this offering. In addition, you may experience further dilution to the extent that our ordinary shares are issued upon the exercise of any share options. See “Dilution” for a more complete description of how the value of your investment in our ADSs will be diluted upon completion of this offering.

You may be subject to limitations on transfer of your ADSs.

Your ADSs are transferable on the books of the depositary. However, the depositary may close its transfer books at any time or from time to time when it deems expedient in connection with the performance of its duties. In addition, the depositary may refuse to deliver, transfer or register transfers of ADSs generally when our books or the books of the depositary are closed, or at any time if we or the depositary deems it advisable to do so because of any requirement of law or of any government or governmental body, or under any provision of the deposit agreement, or for any other reason.

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We are a foreign private issuer within the meaning of the rules under the Exchange Act, and as such we are exempt from certain provisions applicable to U.S. domestic public companies.

Because we qualify as a foreign private issuer under the Exchange Act, we are exempt from certain provisions of the securities rules and regulations in the United States that are applicable to U.S. domestic issuers, including:

We will be required to file an annual report on Form 20-F within four months of the end of each fiscal year. In addition, we intend to publish our results on a quarterly basis as press releases, distributed pursuant to the rules and regulations of the NASDAQ Global Market. Press releases relating to financial results and material events will also be furnished to the SEC on Form 6-K. However, the information we are required to file with or furnish to the SEC will be less extensive and less timely compared to that required to be filed with the SEC by U.S. domestic issuers. As a result, you may not be afforded the same protections or information that would be made available to you were you investing in a U.S. domestic issuer.

We are an emerging growth company within the meaning of the Securities Act and may take advantage of certain reduced reporting requirements. However, such reduced reporting requirements may make our ADSs less attractive to investors.

We are an emerging growth company, as defined in the JOBS Act, and we may take advantage of certain exemptions from requirements applicable to other public companies that are not emerging growth companies including, most significantly, not being required to comply with the auditor attestation requirements of Section 404 for so long as we are an emerging growth company. We cannot predict if investors will find our ADSs less attractive because we may rely on these exemptions. If some investors find our ADSs less attractive as a result, there may be a less active trading market for our ADSs and our stock price may be more volatile.

We may lose our foreign private issuer status in the future, which could result in significant additional cost and expense.

The determination of our status as a foreign private issuer is made annually on the last business day of our most recently completed second fiscal quarter. If we were to lose our foreign private issuer status, the regulatory and compliance costs to us under U.S. securities laws as a U.S. domestic issuer may be significantly higher. We may also be required to modify certain of our policies to comply with corporate governance practices associated with U.S. domestic issuers, which would involve additional costs.

We will incur increased costs as a result of being a public company, particularly after we cease to qualify as an emerging growth company.

We will incur additional legal, accounting and other expenses as a public reporting company, particularly after we cease to qualify as an emerging growth company, which occurs on the earliest of (a) the last day of the fiscal year during which we have total annual gross revenues of at least US$1.07 billion; (b) the last day of our fiscal year following the fifth anniversary of the completion of this offering; (c) the date on which we have, during the preceding three-year period, issued more than US$1.0 billion in non-convertible debt; or (d) the date

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on which we are deemed to be a “large accelerated filer” under the Exchange Act, which would occur if the market value of our ADSs that are held by non-affiliates exceeds US$700 million as of the last business day of our most recently completed second fiscal quarter. For example, we will be required to comply with additional requirements of the rules and regulations of the SEC and requirements of the NASDAQ Global Market, including applicable corporate governance practices. In addition, after we cease to qualify as an emerging growth company, we will be required to comply with the auditor attestation requirements of Section 404 of the Sarbanes-Oxley Act of 2002. We expect that compliance with these requirements will increase our legal and financial compliance costs and will make some activities more time-consuming and costly. We also expect that our management and other personnel will need to divert attention from operational and other business matters to devote substantial time to these public company requirements. We cannot predict or estimate the amount of additional costs we may incur as a result of becoming a public company or the timing of such costs.

In addition, changing laws, regulations and standards relating to corporate governance and public disclosure are creating uncertainty for public companies, increasing legal and financial compliance costs and making some activities more time-consuming. These laws, regulations and standards are subject to varying interpretations, in many cases due to their lack of specificity, and, as a result, their application in practice may evolve over time as new guidance is provided by regulatory and governing bodies. This could result in continuing uncertainty regarding compliance matters and higher costs necessitated by ongoing revisions to disclosure and governance practices. We intend to invest resources to comply with evolving laws, regulations and standards, and this investment may result in increased general and administrative expenses and a diversion of management’s time and attention from revenue-generating activities to compliance activities. If our efforts to comply with new laws, regulations and standards differ from the activities intended by regulatory or governing bodies due to ambiguities related to their application and practice, regulatory authorities may also initiate legal proceedings against us and our business may be adversely affected.

There can be no assurance that we will not be passive foreign investment company, or PFIC, for United States federal income tax purposes for any taxable year, which could subject United States investors in our ADSs or ordinary shares to significant adverse United States income tax consequences.

A non-U.S. corporation will be a “passive foreign investment company,” or “PFIC,” if, in any particular taxable year, either (a) 75% or more of our gross income for such year consists of certain types of “passive” income or (b) 50% or more of the average quarterly value of our assets (as determined on the basis of fair market value) during such year produce or are held for the production of passive income (the “asset test”). We expect to derive sufficient active revenues and to have sufficient active assets, so that we will not be classified as a PFIC for the current taxable year and in the foreseeable future. However, because the PFIC tests must be applied each year, and the composition of our income and assets and value of our assets (which may be determined by reference to the market value of our ADSs) may change, and because the treatment of our VIE for U.S. federal income tax purposes is not entirely clear, it is possible that we may become a PFIC in the current or a future year.

In particular, because the value of our assets for purposes of the asset test may be determined by reference to the market price of our ADSs, fluctuations in the market price of our ADSs may cause us to become a PFIC for the current or subsequent taxable years. The determination of whether we are a PFIC also depends, in part, on the composition of our income and assets, which may be affected by how, and how quickly, we use our liquid assets and the cash raised in this offering. If we do not deploy significant amounts of cash for active purposes, our risk of being a PFIC may substantially increase.

If we are a PFIC in any taxable year, a U.S. Holder (as defined in “Taxation — United States Federal Income Tax Considerations”) may incur significantly increased United States income tax on gain recognized on the sale or other disposition of the ADSs or ordinary shares and on the receipt of distributions on the ADSs or ordinary shares to the extent such gain or distribution is treated as an “excess distribution” under the United States federal income tax rules, and such holder may be subject to burdensome reporting requirements. Further, if we are a PFIC for any year during which a U.S. Holder holds our ADSs or ordinary shares, we generally will

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continue to be treated as a PFIC for all succeeding years during which such U.S. Holder holds our ADSs or ordinary shares. For more information see “Taxation — United States Federal Income Tax Considerations — Passive Foreign Investment Company Rules.”

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