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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
_______________________________________________________________________________________________
FORM 8-K
_______________________________________________________________________________________________
CURRENT REPORT
Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
Date of Report (Date of earliest event reported): May 5, 2021
_______________________________________________________________________________________________
Arena Pharmaceuticals, Inc.
(Exact name of Registrant as Specified in Its Charter)
_______________________________________________________________________________________________
Delaware
000-31161
23-2908305
(State or Other Jurisdiction
of Incorporation)
(Commission File Number)
(IRS Employer
Identification No.)
136 Heber Avenue, Suite 204,
Park City, UT
84060
(Address of Principal Executive Offices) (Zip Code)
Registrant’s Telephone Number, Including Area Code: (858) 453-7200
Not Applicable
(Former Name or Former Address, if Changed Since Last Report)
_______________________________________________________________________________________________
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instructions A.2. below):
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
Securities registered pursuant to Section 12(b) of the Act: 
Title of each class   Trading Symbol(s)   Name of each exchange on which registered
Common Stock, par value $0.0001 per share   ARNA   The Nasdaq Global Select Market
Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).
Emerging growth company
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.




In this report, “Arena Pharmaceuticals,” “Arena,” “Company,” “we,” “us” and “our” refer to Arena Pharmaceuticals, Inc., and/or one or more of our wholly owned subsidiaries, unless the context otherwise provides. Arena Pharmaceuticals® and Arena® are registered service marks of Arena Pharmaceuticals, Inc.
Item 2.02 Results of Operations and Financial Condition.
On May 5, 2021, we issued a press release reporting our financial results for the first quarter ended March 31, 2021. The full text of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K.
In accordance with General Instruction B.2 of Form 8-K, the information in this Current Report on Form 8-K, including Exhibit 99.1, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”) or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such a filing.
Item 9.01 Financial Statements and Exhibits.
(d) Exhibits.
99.1
104 Cover Page Interactive Data File (embedded within the Inline XBRL document)



SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.
Date: May 5, 2021 Arena Pharmaceuticals, Inc.
By: /s/ Amit D. Munshi
Amit D. Munshi
President and Chief Executive Officer


Exhibit 99.1
IMAGE_01A.JPG
Arena Reports First Quarter Financial Results with Strong Cash Position and Continued Progress on Pipeline Over the Quarter
Liquidity position at $1.1 billion as of March 31, 2021 to support continued pipeline progress
SAN DIEGO, Calif., May 5, 2021 - Arena Pharmaceuticals, Inc. (Nasdaq: ARNA) today provided a corporate update and reported financial results for the first quarter ended March 31, 2021.
"Over the quarter, we continued progress across our pipeline – we announced our temanogrel program in microvascular obstruction, the ELEVATE UC 52 Phase 3 study for etrasimod was fully enrolled, and we initiated additional etrasimod Phase 2 studies for eosinophilic esophagitis (VOYAGE) and ulcerative colitis (GLADIATOR UC)," said Amit D. Munshi, President and CEO of Arena. "We also recently published our second annual Environmental, Social, Governance (ESG) report to share our progress and commitment to building long-term value. Overall, our pipeline continues on track and we look forward to providing more updates throughout the year."

Program & Business Updates
In April, during a late-breaking session at The American Academy of Dermatology Virtual Meeting, a sub-study from the Phase 2 ADVISE trial in atopic dermatitis that measured the impact of etrasimod on patient and clinician reported outcomes was presented
In April, Arena published an update to the Environmental, Social, Governance (ESG) Report, available on Arena’s website
In March, Arena announced topline results of the Phase 2 CAPTIVATE trial investigating olorinab in pain associated with irritable bowel syndrome (IBS). While the program missed the primary endpoint, a prespecified subset of moderate to severe patients showed statistically significant and clinically meaningful reduction in pain.
In February, the first participant was dosed in the Phase 2b VOYAGE trial for etrasimod in eosinophilic esophagitis (EoE)
In February, Garry Neil was named Chair, Board of Directors, and Nawal Ouzren named to the Board of Directors
In January, etrasimod ELEVATE UC 52 Phase 3 trial in ulcerative colitis (UC) completed enrollment; both ELEVATE UC 52 and ELEVATE UC 12 Phase 3 trials on track for topline data in Q1 2022; we continue to monitor the impact of the COVID-19 resurgence on study progress for both UC 52 and UC 12
In January at the JP Morgan Health Care Conference, Arena announced plans to commence a Phase 2a study of temanogrel in coronary microvascular obstruction (cMVO)

Financial Update
First Quarter 2021 Financial Results
Revenues for the first quarter were nil compared to $0.3 million in the first quarter of 2020
Research and development (R&D) expenses for the first quarter totaled $102.5 million compared to $78.5 million in the same period 2020. This increase was primarily driven by our advancing clinical



studies, including the etrasimod Phase 3 program, as well as an increase in personnel expenses as we staff to support our clinical programs. The R&D non-cash, share-based compensation was $8.2 million in the first quarter as compared to $6.6 million in the same period 2020
Selling, general and administrative (SG&A) expenses for the first quarter totaled $29.5 million, compared to $26.4 million in the first quarter of 2020. This increase was primarily driven by increased personnel expenses. The SG&A non-cash, share-based compensation was $8.8 million in the first quarter as compared to $8.6 million in the same period 2020
Net loss for the first quarter was $118.4 million compared to net loss of $100.2 million for the same period in 2020
Basic and diluted net loss per share for the first quarter was $1.98 compared to basic and diluted net loss per share of $2.00 for the same period in 2020
Cash, cash equivalents and marketable securities were $1.1 billion at March 31, 2021 and December 31, 2020
Conference Call & Webcast Information
Arena will host a live and webcast question and answer session via conference call with the investment community today, Wednesday, May 5, 2021, at 4:30 PM ET, to discuss the financial results and corporate update.
When: Wednesday, May 5, 2021, at 4:30 PM ET
Dial-in: (877) 643-7155 (United States) or (914) 495-8552 (International)
Conference ID: 4329177
Please join the conference call at least 20 minutes early to register. You can access the live webcast under the investor relations section of Arena’s website at: www.arenapharm.com. A replay of the event will be archived under the investor relations section of Arena’s website for 30 days shortly after the call.
About Arena Pharmaceuticals
ARENA Pharmaceuticals is a team with a singular purpose – deliver important medicines to patients.
In a rapidly changing global market, we work with a sense of urgency every day to understand the needs of all our stakeholders, identify bold, sometimes disruptive, ideas to get medicines to patients, and relentlessly execute until it’s done.
ARENA - Care More. Act Differently. 
Etrasimod, olorinab, and temanogrel are investigational compounds that are not approved for any use in any country.
Forward-Looking Statements
Certain statements in this press release are forward-looking statements that involve a number of risks and uncertainties. Such forward-looking statements may be identified by words such as “look forward to,” “on track for,” “plans,” and “will,” and include, without limitation, statements about the following: Arena’s clinical programs, including expectations regarding study progress, the timing of data readouts for ongoing and anticipated trials, expectations regarding the commencement of additional studies, plans to provide updates on programs and trials, and other statements under “Program Updates” above. For such statements, Arena claims the protection of the Private Securities Litigation Reform Act of 1995. Actual events or results may differ materially from Arena’s expectations. Factors that could cause actual results to differ materially from the forward-looking statements include, but are not limited to, the following: topline data may not accurately reflect the complete results of a particular study or trial; results of clinical trials and other studies are subject to different interpretations and may not be predictive of future results; clinical trials and other studies may not proceed at the time or in the manner expected or at all; the timing and outcome of research, development and regulatory review is uncertain, and Arena’s drug candidates may not advance in development or be approved for marketing; enrolling patients in Arena’s ongoing and intended clinical trials is competitive and challenging; the duration and severity of the coronavirus disease



(COVID-19) pandemic, including but not limited to the impact on Arena’s clinical operations, the operations of Arena’s suppliers, partners, collaborators, licensees, and capital markets, which in each case remains uncertain; risks related to developing and commercializing drugs; Arena will need additional funds to advance all of its programs; the impact of competition; risks related to unexpected or unfavorable new data; the risk that regulatory agencies may interpret or weigh the importance of data differently and reach different conclusions than Arena or others, request additional information, have additional recommendations or change their guidance or requirements before or after approval; satisfactory resolution of litigation or other disagreements with others; and risks related to the enforcement of Arena’s and third parties’ intellectual property rights. Additional factors that could cause actual results to differ materially from those stated or implied by Arena’s forward-looking statements are disclosed in Arena’s filings with the Securities and Exchange Commission (SEC), including but not limited to Arena’s Annual Report on Form 10-K for the year ended December 31, 2020, which was filed with the SEC on February 23, 2021. These forward-looking statements represent Arena’s judgment as of the time of this release. Arena disclaims any intent or obligation to update these forward-looking statements, other than as may be required under applicable law.

Corporate Contacts:
Patrick Malloy
Arena Pharmaceuticals, Inc.
Vice President, Investor Relations & Corporate Communications
pmalloy@arenapharm.com
847.987.4878

(Tables Follow)



Arena Pharmaceuticals, Inc.
Condensed Consolidated Statements of Operations
(In thousands, except per share amounts)
(Unaudited)

Three Months Ended
March 31,
2021 2020
Revenues:
Royalty revenue $ —  $ 262 
Total revenues —  262 
Operating Costs and Expenses:
Research and development 102,535  78,533 
Selling, general and administrative 29,458  26,442 
Total operating costs and expenses 131,993  104,975 
Loss from operations (131,993) (104,713)
Interest and Other Income (Expense):
Interest income 690  4,946 
Interest expense (1,073) (1,163)
Other income, net 90  723 
Gain from Longboard equity method investment 13,869  — 
Total interest and other income (expense), net 13,576  4,506 
Net loss $ (118,417) $ (100,207)
Net loss per share, basic and diluted: $ (1.98) $ (2.00)
Shares used in calculating net loss per share, basic and diluted: 59,780  50,228 



Arena Pharmaceuticals, Inc.
Condensed Consolidated Balance Sheet Data
(In thousands, except share data)
(Unaudited)
March 31,
2021
December 31,
2020
Assets
Current assets:
Cash and cash equivalents $ 432,978  $ 219,544 
Short-term investments, available-for-sale 655,846  884,497 
Prepaid expenses and other current assets 32,781  35,266 
Total current assets 1,121,605  1,139,307 
Land, property and equipment, net 21,129  22,090 
Other non-current assets 41,202  29,323 
Total assets $ 1,183,936  $ 1,190,720 
Liabilities and Stockholders' Equity
Current liabilities:
Accounts payable and other accrued liabilities $ 21,980  $ 35,351 
Accrued clinical and preclinical study fees 20,969  18,325 
Current portion of lease financing obligations 4,558  4,401 
Total current liabilities 47,507  58,077 
Other long-term liabilities 10,410  10,963 
Lease financing obligations, less current portion 40,027  41,211 
Commitments and contingencies
Stockholders' equity:
Preferred stock, $0.0001 par value, 7,500,000 shares authorized, no shares issued and outstanding at March 31, 2021 and December 31, 2020 —  — 
Common stock, $0.0001 par value, 147,000,000 shares authorized at March 31, 2021 and December 31, 2020; 60,619,144 and 58,611,210 shares issued and outstanding at March 31, 2021 and December 31, 2020, respectively
Additional paid-in capital 2,711,930  2,587,494 
Accumulated other comprehensive income 204  700 
Accumulated deficit (1,626,148) (1,507,731)
Total stockholders' equity 1,085,992  1,080,469 
Total liabilities and stockholders' equity $ 1,183,936  $ 1,190,720