Exhibit 10.1

[***] Certain confidential portions (indicated by brackets and asterisks) have been omitted from this exhibit in accordance with the rules of the Securities and Exchange Commission.

PATENT AND KNOW-HOW LICENSE AGREEMENT

THIS PATENT AND KNOW-HOW LICENSE AGREEMENT (this “Agreement”) dated March 29, 2020 (the “Effective Date”) is by and among NanoTx, Corp., a corporation organized and existing under the laws of Delaware, having an address of 7979 Wurzbach Road, San Antonio, Texas 78229 (“NanoTx” or “Licensor”) and Plus Therapeutics, Inc., a corporation organized and existing under the laws of Delaware, having an address of 4200 Marathon Blvd., Suite 200, Austin, Texas 78756 (“PLUS” or “Licensee”).  NanoTx and PLUS are sometimes referred to herein individually as a “Party” and collectively as the “Parties.”

WHEREAS, NanoTx is developing radiolabeled nanoliposomes for the treatment of cancer;

WHEREAS, NanoTx is the assignee of the Licensed Patents (as defined below) previously owned by The Board of Regents of the University of Texas System, University Case No. 2002.005.HSCS;

WHEREAS, PLUS is a clinical-stage pharmaceutical company focused on the discovery, development, and delivery of complex and innovative treatments for patients battling rare cancers; and

WHEREAS, PLUS desires to license the Licensed Patents to develop, manufacture and commercialize Licensed Products (as defined below) in the Field and in the Territory.

NOW THEREFORE, in consideration of the forgoing recitals, the representations, warranties and covenants set forth herein, and other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the Parties hereto hereby agree as follows:

1DEFINITIONS

For purposes of this Agreement, the following terms and variations on them shall have the following meanings, it being understood that words denoting the singular include the plural and vice versa:

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(a)payments made in consideration for the issuance of equity or debt securities of Licensee to the extent not exceeding the fair market value thereof;

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(b)that portion of payments for direct or fully burdened expenses (collectively not to exceed one hundred fifty percent (150%) of direct expenses) associated with research or development as calculated in accordance with GAAP, to the extent that such expenses are separately listed and part of the sublicense;

(c)royalties on sales of Licensed Products by the Sublicensee (payment for which has been otherwise provided in Section 7.5 herein); and

(d)payments for supply of Licensed Products for use in clinical trials by or on behalf of, or for resale by, the Sublicensee.

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2LICENSE

3DEVELOPMENT; TRANSFER OF KNOW-HOW AND EXISTING REGULATORY DOCUMENTATION

3.1Transfer of Know-How.  Promptly (but in any event within ten (10) Business Days) following the Effective Date), NanoTx shall commence transferring and delivering to PLUS all

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Know-How in the possession or Control of NanoTx relating to the Licensed Product and complete such transfer within thirty (30) Calendar Days.  Know-How shall be provided in electronic form or other form in which it exists as of the Effective Date.  To the extent NanoTx subsequently identifies any Know-How that should have been transferred herein to PLUS, NanoTx will promptly provide or make available such additional Know-How to PLUS.

3.2Transfer of Existing Regulatory Documentation.  As of the Effective Date, NanoTx owns, possesses or Controls certain Regulatory Documentation relating to the Licensed Product.  The Parties will cooperate to transfer the ownership of all Regulatory Documentation relating to the Licensed Product to PLUS, which shall include, without limitation: (i) timing for the transfer of Regulatory Documentation (such as manufacturing protocols, IND sponsorship and maintenance and safety reporting), and (ii) timing for the transfer of regulatory licenses, filings or approvals (“Regulatory Transition Plan”), including but not limited to, executing all documentation to effectively transfer ownership of the sponsorship of the IND for nanoliposome encapsulated BMEDA-chelated ¹⁸⁶Rhenium, to PLUS.

3.3Development.

(a)After the Effective Date, the Parties will establish a Joint Steering Committee (“JSC”) to facilitate communication and provide a forum to discuss and exchange information on the overall strategic Development of Licensed Products.  The JSC will have the right to designate subcommittees from time to time, such as a Development, Manufacturing and/or a Regulatory Affairs subcommittee. The JSC will consist of three (3) senior representatives from each Party with appropriate experience to serve on such committee.  Each Party will designate a JSC member who will be the primary contact on the JSC for that Party

(b)The JSC will cooperate to prepare a clinical plan involving the First Product, which shall include, without limitation: (i) an overview of the clinical trials conducted prior to the Effective Date, and (ii) an overview of the clinical trials anticipated to be conducted by the Parties after the Effective Date to support Regulatory Approvals of the Licensed Product, and related timelines (a “Clinical Development Plan”).  PLUS shall be solely responsible for the clinical operations, pharmacovigilance, medical monitoring and execution of the clinical studies outlined in the Clinical Development Plan, including all costs thereof, of the Licensed Product in the Field in the Territory.

(c)All decisions regarding the implementation of the Clinical Development Plan for clinical trials will be mutually agreed upon by the members of the JSC, including designating target completion dates for the collection of Milestone Payments under Section 7.3.  If the members of the JSC are unable to reach consensus on a particular issue within twenty (20) Calendar Days after such issue is referred to them then PLUS shall have the final decision-making authority over all decisions relating to the Development, Manufacturing and Commercialization of the Licensed Products.  Notwithstanding the foregoing, PLUS’ Executive Officer shall reasonably consider the NanoTx’s views and interest in reaching any decision under the JSC’s authority.

3.4Cooperation.  PLUS may engage NanoTx’s services (e.g., consulting agreements) to further research and development and to conduct further clinical studies for Licensed Products

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on terms to be mutually agreed upon, such terms to include reasonable compensation and an obligation by NanoTx to assign to PLUS any Inventions arising under such agreement.

3.5Commercially Reasonable Efforts. NanoTx shall use Commercially Reasonable Efforts to complete its obligations under Section 3.1 and 3.2.  PLUS shall use Commercially Reasonable Efforts (itself or through one or more Affiliates or Sublicensees) to complete its obligations under Section 3.3 and shall conduct all such Development activities in accordance with Applicable Laws, and, as applicable, Good Laboratory Practice and Good Clinical Practice as defined by FDA regulations.

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6COMMERCIALIZATION

Licensee shall itself, or through its Affiliates or Sublicensees, use Commercially Reasonable Efforts to Commercialize the Licensed Product in the Territory. Licensee will undertake such activities at its sole expense. Licensee have all decision-making authority with respect to the Commercialization of the Licensed Products.  Licensee shall be solely liable to meet or execute any and all compliances related to the Commercialization of the Licensed Products. Subject to the Confidentiality section, Licensee agrees to provide Licensor with updates, no less than annually, on Licensee’s efforts to commercialize the Licensed Product.

7PAYMENT

(a)[***]

(b)[***]

(c)[***]

(d)[***]

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From expiration or after the date of any notice of termination is received by a Party, no milestones with respect to the Licensed Product shall be payable by PLUS to NanoTx, except to the extent any amounts are due but unpaid.

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From expiration or after the date of any notice of termination is received by a Party, no milestones with respect to the Licensed Product shall be payable by PLUS to NanoTx, except to the extent any amounts are due but unpaid.

Reductions to Royalties may apply as specified herein, but under no circumstances will the cumulative effect of such reductions reduce the Royalties to less [***] of annual Net Sales in any country in any Calendar Quarter (the “Minimum Royalties”).

Such Royalties will be payable country-by-country on a quarterly basis from the date of First Commercial Sale of the First Product until the following:

(a)In the United States, for the lesser of (i) [***] after first commercialization in the United States, (ii) [***], or (iii) [***]; and

(b)In Europe, for the lesser of (i) [***] after first commercialization of such Licensed Product in the Europe, (ii) [***] or (iii) [***].

On a country-by-country, PLUS’ obligation to pay Royalties will be reduced during each Calendar Quarter by [***] if at any time a direct competitor(s) to the First Product enters the market [***].  A product is not a Competing Product if PLUS has any financial interest in the product.

With respect to any additional Third Party license(s) required or useful for the development, manufacture or commercialization of nanoliposome encapsulated BMEDA-chelated radioisotope drugs as determined by PLUS (other than the Sublicense Agreement), [***].

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8REPORTS; AUDITS

8.1Notification of First Sale. Licensee shall notify Licensor the date on which Licensee, its Affiliates and/or the Sublicensees make a First Commercial Sale Licensed Products within [***] of occurrence.

8.2Royalty reports. PLUS shall submit to NanoTx [***], a written report setting forth for such [***] at least the following information:

(a)the number of Licensed Products sold by PLUS, its Affiliates and Sublicensees in each country;

(b)total billings for such Licensed Products;

(c)the gross amount of monies or cash equivalent or other consideration which is received for sales, leases, licenses or other modes of transfer of Licensed Products by PLUS;

(d)the identity of that consideration which is received instead of money for sales, leases, licenses or other modes of transfer of Licensed Products by PLUS;

(e)deductions from the gross amount as expressly permitted herein to determine the Net Sales thereof;

(f)the amount of Royalties due thereon, or, if no Royalties are due to NanoTx for any reporting period, the statement that no Royalties are due;

(g)the amount of Sublicensing Revenue received by PLUS; and

(h)the amount of other payments due to NanoTx, including but not limited to, running royalties and minimum annual royalty payments.

After termination or expiration of this Agreement, PLUS will continue to submit royalty reports and payments to NanoTx as per PLUS’ obligations under this Agreement until all Licensed Products made, used, marketed, leased or imported under this Agreement have been sold.

8.3Record keeping by PLUS. PLUS and its Affiliates shall maintain complete and accurate books and records of account, in accordance with generally accepted accounting principles in the United States, of all transactions and other business activities under this Agreement, sufficient to confirm the accuracy of all reports and invoices furnished by PLUS to NanoTx under this Agreement, and all payments by PLUS to NanoTx under this Agreement. Upon reasonable written notice to PLUS, but no more often than once per Calendar Year, PLUS shall permit, and shall cause its Affiliates to permit, an independent certified public accounting firm of

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national standing designated by NanoTx and accepted by PLUS (such acceptance not to be unreasonably withheld) to audit such books and records of account of PLUS and its Affiliates until three (3) years after the expiration of such Party’s payment obligation, in order to confirm the accuracy and completeness of any report made under this Section 8.3. Prior to each such audit, such independent certified public accounting firm shall execute a confidentiality agreement that is reasonably acceptable to PLUS. The independent certified public accounting firm shall disclose to NanoTx only whether the audited reports are correct or incorrect and the specific details concerning any discrepancies.

8.4Underpayments/Overpayments. If such independent certified public accounting firm correctly concludes that additional royalties were owed during such period, PLUS shall pay such additional royalties within thirty (30) Calendar Days of the date NanoTx delivers to PLUS such accounting firm’s written report. [***].  For clarity, in all other circumstances the fees charged by such independent certified public accounting firm for the work associated with such underpayment audit shall be paid by PLUS. Any overpayments by PLUS will be credited against future royalty obligations owed under 7.5.

8.5Record Keeping by Sublicensee. PLUS shall include in each sublicense granted by it pursuant to this Agreement a provision requiring the Sublicensee to make reports to NanoTx, to keep and maintain records of sales made pursuant to such sublicense, and to grant access to such records by NanoTx’s independent certified public accounting firm to the same extent required of PLUS under this Agreement.

8.6Confidentiality. NanoTx shall treat all financial information subject to review under this Section 8, or under any agreement with a Sublicensee, in accordance with the confidentiality provisions of Section 11 of this Agreement, and shall cause its independent certified public accounting firm to enter into an acceptable confidentiality agreement with NanoTx obligating such independent certified public accounting firm to retain all such financial information of PLUS in confidence pursuant to such confidentiality agreement.

9INTELLECTUAL PROPERTY MATTERS

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10REPRESENTATIONS AND WARRANTIES

(a)NanoTx represents and warrants that it has full authority to execute, enter into and perform its obligation under this Agreement.

(b)NanoTx represents and warrants it the sole and exclusive owner of the Licensed Patents listed in Exhibit A, all of which are free and clear of any liens, charges and encumbrances that could adversely impact the licenses granted to Licensee under Section 2; and no other person, corporate or other private entity, or governmental entity or subdivision thereof, has or shall have any claim of ownership whatsoever with respect to the Licensed Patents listed in Exhibit A.

(c)NanoTx represents and warrants that Exhibit A sets forth a true and complete list of a Licensed Patents, and each such Licensed Patents, remains in full force and effect as of the Effective Date, and NanoTx will timely pay all filing and renewal fees with respect to such Licensed Patents unless otherwise agreed to in writing by the Parties.

(d)NanoTx represents and warrants that as of the Effective Date, NanoTx has complied with all applicable laws including any disclosure requirements, in connection with the filing, prosecution and maintenance of the Licensed Patents.

(e)NanoTx represents and warrants it the sole and exclusive owner of the Know-How, all of which are free and clear of any liens, charges and encumbrances that could adversely impact the licenses granted to Licensee under Section 2 or Licensees ability to transfer the Know-How as set forth in Section 3.1; and no other person, corporate or other private entity, or governmental entity or subdivision thereof, has or shall have any claim of ownership whatsoever with respect to the Know-How.

(f)NanoTx represents and warrants it the sole and exclusive owner of the Licensed Technology, all of which are free and clear of any liens, charges and encumbrances that could adversely impact the licenses granted to Licensee under Section 2; and no other person, corporate or other private entity, or governmental entity or subdivision thereof, has or shall have any claim of ownership whatsoever with respect to the Licensed Technology.

(g)As of the Effective Date, NanoTx has not: (i) assigned, transferred, conveyed or otherwise encumbered its right, title and interest in the Licensed Patents, Know-How or Licensed Technology, or (ii) granted any rights to any Third Party; in each case (i) and (ii) that would conflict with the rights granted to Licensor under this Agreement.

(h)As of the Effective Date, NanoTx represents and warrants it has disclosed to PLUS all Know-How and Regulatory Documentation relating to the Licensed Products, in each case that was generated by or on behalf of NanoTx.

(i)NanoTx represents and warrants it the sole and exclusive owner of the Regulatory Documentation existing prior to the Effective Date, all such Regulatory Documentation is true, correct and accurate and nothing prevents NanoTx’s ability to transfer ownership of such existing Regulatory Documentation as set forth in Section 3.2; and no other person, corporate or other

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private entity, or governmental entity or subdivision thereof, has or shall have any claim of ownership whatsoever with respect to such existing Regulatory Documentation.

(j)NanoTx represents and warrants that as of the date of the License Grant in Section 2, Licensor is not aware of any patentable Inventions (other than the Inventions covered or to be covered by the Licensed Technology) that if patented would be infringed by Licensee’s exercise of the Inventions included in the License Grant.

(k)NanoTx represents and warrants NanoTx it has no, and will not have any, obligations to any Third Party, including University of Texas System, to provide material, data, research and development collaborations and licenses, clinical trial participation, publication, or commercialization that could conflict with Licensor’s business.

(l)NanoTx represents and warrants that NanoTx is not, and none of its employees, nor any Third Party that conducted Development or Manufacture of the Licensed Products on behalf of NanoTx prior to the Effective Date, is, debarred by any Regulatory Authority, or is the subject of any debarment proceeding by any Regulatory Authority and, in the course of the discovery or pre-clinical development and clinical development prior to the Effective Date, NanoTx has not, and any Third Party acting on behalf of NanoTx have used any employee or consultant that is debarred by any Regulatory Authority or, is the subject of any debarment proceeding by any Regulatory Authority.

(m)NanoTx represents and warrants that as of the Effective Date, NanoTx has maintained insurance policies with minimum “A-“ Best rated insurance carriers to cover its indemnification obligations under Section 13.1, in each case with limits, as applicable: [***].

10.2Representations by PLUS.  PLUS represents and warrants that:

(a)PLUS is a corporation duly organized, validly existing and in good standing under the laws of state in which it is incorporated, and it has full right and authority to enter into this Agreement and to accept the rights and licenses granted as herein described.

(b)The execution, delivery and performance of this Agreement does not conflict with any other agreement, contract, instrument or understanding, oral or written, to which PLUS is a party, or by which it is bound, nor will it violate any law applicable to PLUS.

10.3Limitation of Liability. Notwithstanding anything to the contrary contained herein, no Party shall be liable to another Party under any theory for any special, incidental, indirect, consequential or other similar damages, or any punitive damages, whether arising directly or indirectly out of the transactions contemplated by this Agreement. To be clear, neither Party shall be entitled to recover for any lost profit or lost sale damages of any kind, whether those claimed damages are direct or indirect.

10.4DISCLAIMER.  EXCEPT AS OTHERWISE EXPRESSLY SET FORTH IN THIS AGREEMENT, NANOTX DISCLAIMS ALL WARRANTIES WHATSOEVER, WITH RESPECT TO THE LICENSED PRODUCTS, EITHER EXPRESS OR IMPLIED, INCLUDING WARRANTIES AS TO THE MERCHANTABILITY, FITNESS FOR A PARTICULAR

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PURPOSE, OR THAT THE MANUFACTURE, USE OR SALE OF THE LICENSED PRODUCTS WILL NOT INFRINGE ANY THIRD PARTY PATENTS.

11CONFIDENTIALITY

11.1Confidential Information. All Confidential Information disclosed by one Party to the other Party hereunder shall be maintained in confidence by the receiving Party and shall neither be disclosed to any Third Party nor used for any purpose except as set forth herein without the prior written consent of the disclosing Party, except as provided in Section 11.2, and except to the extent that such Confidential Information:

(a)is known by the receiving Party at the time of its receipt, and not through a prior disclosure by the disclosing Party, as documented by the receiving Party’s business records;

(b)is properly in the public domain by use and/or publication before its receipt from the disclosing Party, or thereafter enters the public domain through no fault of the receiving Party;

(c)[***]; or

(d)[***].

11.2Disclosure of Confidential Information. Each Party may disclose Confidential Information belonging to the other Party as expressly permitted by this Agreement, or if and to the extent such disclosure is reasonably necessary:

(a)to be disclosed by NanoTx to [***].

(b)to be disclosed by PLUS [***]; and

(c)to be disclosed to governmental or other regulatory agencies in order to obtain patents or to gain or maintain approval to conduct clinical studies or to market the Licensed Product, but such disclosure may be only to the extent reasonably necessary to obtain such patents or authorizations, and all reasonable steps shall be taken to protect the confidentiality of such Confidential Information.

11.3Disclosure by Law. If the receiving Party is required by judicial or administrative process or Applicable Laws to disclose Confidential Information that is subject to the non-disclosure provisions of this Section 11.3, such Party shall promptly inform the other Party of the disclosure that is being sought in order to provide the other Party an opportunity to challenge or limit the disclosure obligations. The Confidential Information that is disclosed by judicial or administrative process or Applicable Laws shall remain otherwise subject to the confidentiality and non-use provisions of this Section 11, and the Party disclosing the Confidential Information pursuant to judicial or administrative process or Applicable Laws shall, except where impracticable or legally impossible, take all steps reasonably necessary, including without limitation obtaining an order of confidentiality, to ensure the continued confidential treatment of such Confidential Information. Both Parties shall require their respective directors, officers and employees to whom the Confidential Information is disclosed to undertake confidentiality and non-use obligations consistent with the terms of this provision.

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(a)If termination occurs prior to initiation of Phase II (i.e., consistent with 21 U.S. CFR § 312.21(c)), PLUS shall transfer to NanoTx all Information and Regulatory Documentation Controlled by PLUS as of the effective date of termination and generated in the Development for such terminated License Product(s) in such country(ies), at NanoTx’s reasonable expense.

(b)If termination occurs after initiation of Phase II but prior to Regulatory Approval of such terminated License Product(s) in such country(ies), NanoTx shall pay PLUS a reasonable royalty rate should such License Product be Commercialized.  Upon NanoTx’s written request and at NanoTx’s reasonable expense, PLUS shall transfer to NanoTx all Information and Regulatory Documentation Controlled by PLUS as of the effective date of termination and generated in the Development for such terminated License Product(s) in such country(ies).

(c)If termination occurs following Regulatory Approval but prior to launch of such terminated License Product(s) in such country(ies), NanoTx shall pay PLUS for reasonable business expenses accrued by PLUS prior to termination and a reasonable royalty rate. Upon NanoTx’s written request and at NanoTx’s reasonable expense, PLUS shall assign and transfer to NanoTx all Information and Regulatory Documentation Controlled by PLUS as of the effective date of termination and generated in the Development and Manufacture for such terminated License Product(s) in such country(ies).

(d)If termination occurs following launch of such terminated License Product(s) in such country(ies), NanoTx shall have an option for ninety (90) Calendar Days to negotiate at market rates for the assignment and transfer to NanoTx all Information and Regulatory Documentation Controlled by PLUS as of the effective date of termination and generated in the Development, Manufacture and Commercialization for such terminated License Product(s) in such country(ies).

(e)If, at the time of such termination, PLUS is conducting any clinical trials, then at NanoTx’s election on a trial-by-trial and site-by-site basis, PLUS will cooperate with NanoTx to transfer the conduct of all such clinical trials at such sites to NanoTx and NanoTx shall assume

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any and all liability, at its expense, for such clinical trials as such sites after the effective date of such termination, or PLUS will wind down the conduct of any such clinical trial or site which is not assumed by NanoTx.

(f)NanoTx would fully and forever release and discharge PLUS and its Affiliates, and Sublicensees, from any and all claims, demands, liabilities, obligations, responsibilities, suits, actions and causes of action, known or unknown, past, present or future, or otherwise, arising out of or relating to this Agreement or a breach of Pfizer’s rights and obligations under this Agreement; provided however, that the foregoing release does not discharge any failure to make payments.

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14MISCELLANEOUS

14.1Independent Contractors. In the exercise of their respective rights, and the performance of their respective obligations, under this Agreement, the Parties are, and shall remain, independent contractors. Nothing in this Agreement shall be construed to constitute the Parties as partners, joint venturers, or participants in a joint enterprise or undertaking, or to constitute either of the Parties as the agent of the other Party for any purpose whatsoever. Neither Party shall bind, or attempt to bind, the other Party hereto to any contract or the performance of any other obligation, or represent to any Third Party that it is authorized to enter into any contract or binding obligation on behalf of the other Party hereto.

14.2Assignment. Except as expressly set forth in this Agreement, neither Party shall have the right or the power to assign or otherwise transfer, in whole or in part, any of its rights, or delegate the performance of any of its obligations under this Agreement, except that either Party may assign its rights under this Agreement to a successor to all or substantially all of the assigning Party’s activities related to this Agreement, whether by transfer of assets or capital stock, issuance of capital stock, merger, Change in Control, or otherwise, provided that such successor agrees in writing to be bound by the obligations of the assigning Party.  Any permitted assignment shall not relieve the assigning or delegating Party of any of its obligations under this Agreement.

14.3Force Majeure. Neither Party shall be liable for any failure to perform, or any delay in the performance of, any of its obligations under this Agreement to the extent, but only to the extent, that such Party’s performance is prevented by the occurrence of an event of force majeure; provided, however, that with respect to a failure to make payment due to an event of force majeure, the non-performing Party shall be required to make such payment as quickly as possible but in any event, even if the force majeure continues, within thirty (30) Calendar Days from the date that the force majeure began; provided, further, however, that if an event of force majeure prevents either Party from making any payment to the other Party in a timely manner, as provided in Section 7, interest on such unpaid amount shall nonetheless accrue at the 30 year U.S. government treasury rate. For purposes of this Section 14.3, an event of force majeure shall mean and include, war, civil war, insurrection, rebellion, civil unrest, fire, flood, earthquake, adverse weather conditions, epidemic, pandemic or disease outbreak (including the COVID-19 virus) military or usurped power or confiscation, terrorist activities, embargo, strike, lockout, labor unrest, unavailability of supplies, materials or transportation, acts of the public enemy, acts of government authorities

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(including but not limited to the refusal of the competent Government Agencies to issue required Regulatory Approvals), and, in general, any other cause or condition beyond the reasonable control of the Party whose performance is affected thereby. If the Party’s performance is affected by the occurrence of any event of force majeure, that Party shall furnish immediate written notice thereof to the other Party hereto.

14.4Notices.  Any notices required or permitted under this Agreement will be in writing, will refer specifically to this Agreement, and will be sent by recognized national or international overnight courier, confirmed facsimile transmission (provided that duplicative copy is provided via confirmed electronic mail, registered mail or certified mail), confirmed electronic mail, or registered or certified mail, postage prepaid, return receipt requested, or delivered by hand to the address as set forth herein.  Notices under this Agreement will be deemed to be duly given: (a) when delivered by hand; (b) upon confirmed electronic mail transmission; (c) two Business Days after deposit with a recognized national or international courier; or (d) on the delivery date indicated in the return receipt for registered or certified mail.  A party may change its contact information immediately upon written notice to the other party in the manner provided in this, Section 14.4.

If to NanoTx, Corp.

NanoTx, Corp.
ATTN: President
7979 Wurzbach Road
San Antonio, Texas 78229

If to PLUS Therapeutics, Inc.:

Plus Therapeutics, Inc.
ATTN: President & CEO
4200 Marathon Blvd., Suite 200
Austin, Texas 78756

14.5Dispute Resolution.

(a)Except for any “Excluded Claim” (defined in Section 14.5(g) below), the Parties shall negotiate in good faith and use reasonable efforts to settle any dispute, controversy or claim arising from or related to this Agreement, or the breach thereof, as follows. Any Party shall give the other Party written notice of any dispute, controversy or claim not resolved in the normal course of business.  Within fifteen (15) Business Days from the date of delivery of such notice, the receiving Party shall submit to the other Party a written response.  The notice and response shall include (a) a statement of that Party’s position and a summary of arguments supporting that position, and (b) the name and title of the executive who will represent that Party and of any other person who will accompany the executive.  Within thirty (30) Business Days from the date of delivery of the initial notice, the executives of both Parties shall meet at a mutually acceptable time and place, and thereafter as often as they reasonably deem necessary, to attempt to resolve the dispute, controversy or claim. These executives shall have the authority to settle the dispute and shall be at a higher level of management than the persons with direct responsibility for

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administration of this Agreement. All negotiations pursuant to this paragraph are confidential and shall be treated as compromise and settlement negotiations for purposes of applicable rules of evidence.  

(b)If the Parties do not fully settle within thirty (30) Calendar Days of such meeting, and a Party wishes to pursue the matter, each such dispute, controversy or claim that is not an Excluded Claim shall be finally resolved by binding arbitration in accordance with the Commercial Arbitration Rules and Supplementary Procedures for Large Complex Disputes of the American Arbitration Association (“AAA”), and judgment on the arbitration award may be entered in any court having jurisdiction thereof.

(c)The arbitration shall be conducted by a panel of three (3) persons experienced in the pharmaceutical business (provided that such arbitrators are not required to be selected from AAA’s list of arbitrators) as follows: (a) within ten (10) Business Days after initiation of arbitration, each Party shall select one (1) person to act as arbitrator, and (b) the two (2) Party-selected arbitrators shall select a third arbitrator within five (5) Business Days of their appointment. If the arbitrators selected by the Parties are unable or fail to agree upon the third arbitrator, the third arbitrator shall be appointed promptly by the AAA. The place of arbitration shall be Waco, Texas.

(d)Either Party may apply to the arbitrators for any applicable interim injunctive relief until the arbitration award is rendered or the controversy is otherwise resolved. Either Party also may, without waiving any remedy under this Agreement, seek from any court having jurisdiction any injunctive or provisional relief necessary to protect the rights or property of that Party pending the arbitration award. The arbitrators shall have no authority to award punitive or any other type of damages not measured by a Party’s compensatory damages. Each Party shall bear its own costs and expenses and attorneys’ fees and an equal share of the arbitrators’ and any administrative fees of arbitration.

(e)Except to the extent necessary to confirm an award, or as may be required by applicable law, rule or regulation, neither a Party nor an arbitrator may disclose the existence, content, or results of an arbitration without the prior written consent of both Parties. In no event shall an arbitration be initiated after the date when commencement of a legal or equitable proceeding based on the dispute, controversy or claim would be barred by the applicable law or statute of limitations.

(f)The Parties agree that, in the event of a dispute over the nature or quality of performance under this Agreement, neither Party may terminate the Agreement until final resolution of the dispute through arbitration or other judicial determination. The Parties further agree that any payments made pursuant to this Agreement pending resolution of the dispute shall be refunded if an arbitrator or court determines that such payments are not due.

(g)As used in this Section 14.5, the term “Excluded Claim” shall mean a dispute, controversy or claim that concerns: (a) the validity or infringement of a patent, trademark or copyright; (b) any antitrust, anti-monopoly or competition law or regulation, whether or not statutory; or (c) the need to seek preliminary or injunctive measures or other equitable relief (e.g., in the event of a potential or actual breach of the confidentiality and non-use provisions in Section

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11). An Excluded Claim need not be resolved through the procedure described in Sections 14.5(a) – 14.5(f) and may be immediately brought in a court of competent jurisdiction.

14.6Severability. If any provision of this Agreement is determined by any court or administrative tribunal of competent jurisdiction in the Territory to be invalid or unenforceable under Applicable Laws, the Parties shall negotiate in good faith a replacement provision that is commercially equivalent, to the maximum extent permitted by the Applicable Laws, to such invalid or unenforceable provision. The invalidity or unenforceability of any provision of this Agreement shall not affect the validity or enforceability of the other provisions of this Agreement.

14.7Governing Law. This Agreement shall be governed by and construed exclusively in accordance with the laws of State of Texas and, with respect to the Licensed Patents and related matters, the patent laws of the relevant patent granting jurisdiction (except that as between the Parties, inventorship shall be determined under United States patent law), without reference to any rules of conflicts of law or renvoi.

14.8Counterparts. This Agreement may be executed in any number of counterparts, each of which shall be deemed to be an original, and all of which together shall constitute one and the same instrument. Each party acknowledges that an original signature or a copy thereof transmitted by facsimile or by pdf shall constitute an original signature for purposes of this Agreement.

14.9Headings. The subject headings of this Agreement are included for purposes of convenience only and shall not affect the construction or interpretation of any provision of this Agreement.

14.10Further Actions. Each Party agrees to execute, acknowledge and deliver such further instruments, and to do all such other acts, as may be necessary or appropriate in order to carry out the purposes and intent of this Agreement.

14.11Entire Agreement and Amendments. This Agreement, together with all Exhibits attached hereto, constitutes the entire agreement between the Parties, and supersedes all prior agreements, understandings and communications between the Parties, with respect to the subject matter hereof. No modification or amendment of this Agreement, including but not limited to this Section 14.11, shall be binding upon the Parties unless in writing and executed by the duly authorized representative of each of the Parties.

14.12Waivers. The failure by either Party hereto to assert any of its rights hereunder, including, but not limited to, the right to terminate this Agreement due to a breach or default by the other Party hereto, shall not be deemed to constitute a waiver by that Party of its right thereafter to enforce each and every provision of this Agreement in accordance with its terms.

[Signature page follows]

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IN WITNESS WHEREOF, the Parties have caused this Agreement to be executed as of the Effective Date, by their duly authorized representatives in its name and on its behalf.

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EXHIBIT A

LICENSED PATENTS

[REDACTED]

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EXHIBIT B

PLUS THERAPEUTICS, INC.
COMMON STOCK PURCHASE AGREEMENT

THIS COMMON STOCK PURCHASE AGREEMENT (the “Agreement”) is entered into effective as of [●], 2020, by and between Plus Therapeutics, Inc., a Delaware corporation (the “Company”), and NanoTx, Corp., a Delaware corporation (“Purchaser”) pursuant to that certain License Agreement between the Company and the Purchaser dated as of March 29, 2020 (the “License Agreement”).

.  In partial consideration for Purchaser’s license to the Company of certain intellectual property under the License Agreement, the Company hereby issues to Purchaser, [●] shares (the “Shares”) of the Company’s Common Stock (the “Common Stock”), valued at the per share price of $[●] for an aggregate value of $300,000.

.

Exemption from Registration

.  The sale of the Shares has not been registered under the Securities Act of 1933, as amended (the “1933 Act”), or registered or qualified under applicable state securities laws in reliance upon certain exemptions from such registration and qualification.  The Shares must be held indefinitely and may not be resold, transferred or otherwise disposed of without registration under the 1933 Act and registration or qualification under applicable state securities laws or an opinion of counsel, in form and substance reasonably satisfactory to the Company, that such registration and qualification is not required.  

Representations and Warranties of the Purchaser

.  In connection with the purchase of the Shares, Purchaser represents to the Company as follows:

1.This Agreement has been duly and validly authorized, executed and delivered on behalf of the Purchaser and is a valid and binding agreement of the Purchaser enforceable against the Purchaser in accordance with its terms, subject as to enforceability to general principles of equity and to applicable bankruptcy, insolvency, reorganization, moratorium, liquidation and other similar laws relating to, or affecting generally, the enforcement of applicable creditors' rights and remedies.

2.Purchaser is aware of the Company’s business affairs and financial condition and has acquired sufficient information about the Company to reach an informed and knowledgeable decision to acquire the Shares.  Purchaser is purchasing the Shares for investment for Purchaser’s own account and not with a view to, or for resale in connection with, any “distribution” thereof within the meaning of the 1933 Act or under any applicable state securities laws.  Purchaser does not have any present intention to transfer the Shares to any other party.  Purchaser understands that the exemption from registration under the 1933 Act for the issuance of the Shares depends in part upon the bona fide nature of Purchaser’s investment intent as expressed in this Agreement.

3.Purchaser understands that the Shares are “restricted securities” under federal and state securities laws and that, pursuant to these laws, Purchaser must hold the

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Shares indefinitely unless they are registered and qualified under such laws or an exemption from such registration and qualification is available.  Purchaser acknowledges that the Company has no obligation to register or qualify the Shares for resale.  Purchaser further acknowledges that, if an exemption from registration or qualification is available, it may be conditioned on certain requirements, including, but not limited to, the time and manner of sale, the holding period for the Shares and requirements relating to the Company, which are outside of Purchaser’s control and which the Company is under no obligation, and may not be able, to satisfy.

4.Purchaser believes that an investment in the Shares is suitable for Purchaser based on Purchaser’s investment objectives and financial needs, and Purchaser is able to bear the economic risk of an investment in the Shares.  Purchaser has such knowledge and experience in financial and business matters as to make Purchaser capable of evaluating the risks of the prospective investment and to make an informed investment decision and is able to bear the economic risk of an investment in the Shares.  Purchaser has either (i) preexisting personal or business relationships with the Company or any of its officers, directors or controlling persons, or (ii) the capacity to protect Purchaser’s own interests in connection with the purchase of the Shares by virtue of the business or financial expertise of Purchaser or professional advisors to Purchaser who are unaffiliated with and who are not compensated by the Company or any of its affiliates, directly or indirectly.

5.Purchaser realizes that an investment in the Shares is highly speculative and involves a high degree of risk, including, without limitation, the developmental stage of the Company, the need for additional capital, the ability of the Company to develop its products and services on a timely basis or at all, the market acceptance of the Company’s products or services, the rapid technological change and competition in the industry and the ability of the Company to assert and protect its intellectual property rights.

6.The Purchaser understands that no U.S. federal or state agency or any other government or governmental agency has passed on or made any recommendation or endorsement of the Shares or the fairness or suitability of an investment in the Shares nor have such authorities passed upon or endorsed the merits of the offering of the Shares.

7.The Purchaser represents and warrants to the Company that at no time prior to the date of this Agreement has the Purchaser, its agents, representatives or affiliates engaged in or effected, in any manner whatsoever, directly or indirectly, any (i) "short sale" (as such term is defined in Rule 200 of Regulation SHO of the 1933 Act or the Securities Exchange Act of 1934, as amended (the “Exchange Act”)) of the Common Stock or (ii) hedging transaction, which establishes a net short position with respect to the Common Stock.

3.Representations and Warranties of the Company.

A.Organization. The Company is duly organized, validly existing and in good standing under the laws of state in which it is incorporated, and it has full right and authority to enter into this Agreement and to accept the rights and licenses granted as herein described.

B.Authorization; Enforcement. The Company has the requisite corporate power and authority to enter into and to consummate the transactions contemplated by this

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Agreement and otherwise to carry out its obligations hereunder. The execution and delivery of this Agreement by the Company and the consummation by it of the transactions contemplated hereby have been duly authorized by all necessary action on the part of the Company. This Agreement has been duly executed by the Company and, when delivered in accordance with the terms hereof, will constitute the valid and binding obligation of the Company enforceable against the Company in accordance with its terms except (i) as limited by general equitable principles and applicable bankruptcy, insolvency, reorganization, moratorium and other laws of general application affecting enforcement of creditors’ rights generally, (ii) as limited by laws relating to the availability of specific performance, injunctive relief or other equitable remedies and (iii) insofar as indemnification provisions may be limited by applicable law.

C.Capitalization. As of March 20, 2020, the authorized capital stock of the Company consists of 100,000,000 shares of Common Stock and 5,000,000 of preferred stock, par value $0.001, of which 3,880,588 shares of Common Stock were issued and outstanding. All such outstanding shares have been, or upon issuance will be, validly issued, fully paid and nonassessable. Except as disclosed in the Company Reports (as defined below), as of the date hereof, (i) no shares of the Company’s capital stock are subject to preemptive rights, (ii) there are no outstanding options, warrants, scrip, rights to subscribe to, calls or commitments of any character whatsoever relating to, or securities or rights convertible into, any shares of capital stock of the Company, or contracts, commitments, understandings or arrangements by which the Company is or may become bound to issue additional shares of capital stock of the Company or options, warrants, scrip, rights to subscribe to, calls or commitments of any character whatsoever relating to, or securities or rights convertible into, any shares of Common Stock of the Company, (iii) there are no agreements or arrangements under which the Company is obligated to register the sale of any of its securities under the Securities Act (except this Agreement), (iv) there are no outstanding securities or instruments of the Company which contain any redemption or similar provisions, and there are no contracts, commitments, understandings or arrangements by which the Company is or may become bound to redeem a security of the Company, (v) there are no securities or instruments containing anti-dilution or similar provisions that will be triggered by the issuance of the Shares as described in this Agreement and (vi) the Company does not have any stock appreciation rights or “phantom stock” plans or agreements or any similar plan or agreement.

D.Issuance of Shares. Upon issuance and payment therefor in accordance with the terms and conditions of this Agreement, the Shares shall be validly issued, fully paid and nonassessable and free from all taxes, liens and charges.

E.No Conflicts. The execution, delivery and performance of this Agreement by the Company and the consummation by the Company of the transactions contemplated hereby do not and will not (i) conflict with or violate any provision of the Company’s certificate or articles of incorporation, bylaws or other organizational or charter documents, (ii) conflict with, or constitute a default (or an event which with notice or lapse of time or both would become a default) under, or give to others any rights of termination, amendment, acceleration or cancellation of any material agreement, indenture or instrument to which the Company or any of its subsidiaries is a party or (iii) conflict with or result in a violation of any law, rule, regulation, order, judgment, injunction, decree or other restriction of any court or governmental body to which the Company or any of its subsidiaries is subject, or by which any property or asset of the Company or any of its subsidiaries is bound or affected, except in the case of conflicts, defaults, terminations,

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amendments, accelerations, cancellations and violations under clauses (ii) and (iii), which could not reasonably be expected to result in a material adverse effect on the assets, business, financial condition, liabilities or results of operations of the Company (a “Material Adverse Effect”).

F.Brokers’ Fees. The Company has no liability or obligation to pay any fees or commissions to any broker, finder, or agent with respect to the transactions contemplated by this Agreement.

G.SEC Reports; Internal Controls and Procedures; Financial Statements.

1.The Company has filed with the United States Securities and Exchange Commission (the “SEC”) all statements, reports, schedules, forms and other documents required to be filed by the Company with the SEC since January 1, 2019 on a timely basis or has received a valid extension of such time of filing and has filed any such documents prior to the expiration of any such extension (the foregoing, collectively, the “Company Reports”). As of the time it was filed with the SEC (or, if amended or superseded by a filing prior to the date of this Agreement, then on the date of such filing) each of the Company Reports (i) was accurate and complete; (ii) complied as to form with the applicable requirements of the Exchange Act (as the case may be) and the applicable rules and regulations of the SEC thereunder; and (iii) did not contain any untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading.

2.The consolidated financial statements (including any related notes) contained or incorporated by reference in the Company Reports (as amended prior to the date of this Agreement): (i) complied as to form in all material respects with the published rules and regulations of the SEC applicable thereto; (ii) were prepared in accordance with generally accepted accounting principles in the United States (“GAAP”) applied on a consistent basis throughout the periods covered (except as may be indicated in the notes to such financial statements or, in the case of unaudited financial statements, as permitted by Form 10-Q, Form 8-K or any successor form under the Exchange Act, and except that the unaudited financial statements may not contain footnotes and are subject to normal and recurring year-end adjustments that will not, individually or in the aggregate, be material in amount), and (iii) fairly presented, in all material respects, the consolidated financial position of the Company and its consolidated subsidiaries as of the respective dates thereof and the consolidated results of operations and cash flows of the Company and its consolidated subsidiaries for the periods covered thereby. No financial statements of any entity other than the Company and its consolidated subsidiaries are required by GAAP to be included in the consolidated financial statements of the Company. With respect to the financial statements (including any related notes) contained or incorporated by reference in the Company Reports, there have been no deficiencies or weaknesses identified in writing by the Company or the Company’s independent auditors (whether current or former) in the design or operation of internal controls of financial reporting utilized by the Company and its consolidated subsidiaries that would have a Material Adverse Effect.

3.Except as disclosed in the Company Reports, none of the Company or any of its consolidated subsidiaries has any liabilities or obligations of any nature (whether accrued, absolute, contingent or otherwise), except for liabilities or obligations (i) that were

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incurred after December 31, 2019 in the ordinary course of business consistent with past practice, (ii) that were set forth on the Company financial statements for the year ended December 31, 2019, (iii) that were incurred in connection with this Agreement and the License Agreement and the transactions contemplated thereby, or (iv) that would not reasonably be expected to result in a Material Adverse Effect.

H.Compliance with Laws; Permits. The business of the Company or any of its subsidiaries is, and since December 31, 2019 has been, conducted in compliance in all material respects with all laws applicable to the Company or such subsidiary or by which any property, asset or right of the Company or such subsidiary is bound except as would not reasonably be expected to result in a Material Adverse Effect.

I.Absence of Certain Changes or Events. Except as disclosed in the Company Reports, since December 31, 2019, (i) the Company and its subsidiaries have conducted their respective businesses in all material respects in the ordinary course, consistent with past practice, and (ii) the Company has not taken any steps, and does not currently expect to take any steps, to seek protection pursuant to title 11, U.S. Code, or any similar federal or state law for the relief of debtor nor does the Company or any of its subsidiaries have any knowledge or reason to believe that its creditors intend to initiate involuntary bankruptcy or insolvency proceedings.

J.Litigation. There is no action, suit or proceeding pending or, to the knowledge of the Company, threatened against or affecting the Company, any subsidiary of the Company or any of their respective properties before or by any court, arbitrator, governmental or administrative agency or regulatory authority which (i) adversely affects or challenges the legality, validity or enforceability of any of this Agreement or the Shares or (ii) would reasonably be expected to result in a Material Adverse Effect.

K.Intellectual Property.

1.The Company and its subsidiaries own or possess adequate rights or licenses to use all material trademarks, trade names, service marks, service mark registrations, service names, patents, patent rights, copyrights, inventions, licenses, approvals, governmental authorizations, trade secrets and rights necessary to conduct their respective businesses as now conducted.  None of the Company's material trademarks, trade names, service marks, service mark registrations, service names, patents, patent rights, copyrights, inventions, licenses, approvals, government authorizations, trade secrets or other intellectual property rights have expired or terminated, or, by the terms and conditions thereof, could expire or terminate within two years from the date of this Agreement.  The Company and its subsidiaries do not have any knowledge of any infringement by the Company or its subsidiaries of any material trademark, trade name rights, patents, patent rights, copyrights, inventions, licenses, service names, service marks, service mark registrations, trade secret or other similar rights of others, or of any such development of similar or identical trade secrets or technical information by others, and there is no claim, action or proceeding being made or brought against, or to the Company's knowledge, being threatened against, the Company or its subsidiaries regarding trademark, trade name, patents, patent rights, invention, copyright, license, service names, service marks, service mark registrations, trade secret or other infringement, which could reasonably be expected to have a Material Adverse Effect.

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4.Reports Under Exchange Act. With a view to making available to Purchaser the benefits of Rule 144 and any other rule or regulation of the SEC that may at any time permit Purchaser to sell securities of the Company to the public without registration, the Company shall: (a) make and keep available adequate current public information, as those terms are understood and defined in Rule 144; (b) use commercially reasonable efforts to file with the SEC in a timely manner all reports and other documents required of the Company under the 1933 Act and the Exchange Act; and (c) furnish to Purchaser, so long as Purchaser owns Shares, forthwith upon request (i) to the extent accurate, a written statement by the Company that it has complied with the reporting requirements of Rule 144, the 1933 Act, and the Exchange Act, and (ii) such other information as may be reasonably requested in availing Purchaser of any rule or regulation of the SEC that permits the selling of any such securities without registration.

Legends on Stock Certificates

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Restrictive Legends

.  The stock certificates for the Shares shall be endorsed with the following restrictive legends:

“THE SECURITIES REPRESENTED BY THIS CERTIFICATE MAY NOT BE SOLD, ASSIGNED, TRANSFERRED, ENCUMBERED OR OTHERWISE DISPOSED OF, EXCEPT IN COMPLIANCE WITH THE TERMS OF A WRITTEN AGREEMENT BETWEEN THE COMPANY AND THE INITIAL HOLDER HEREOF.  SUCH AGREEMENT PROVIDES FOR RESTRICTIONS ON TRANSFER OF THE SECURITIES, INCLUDING RIGHTS OF FIRST REFUSAL.  THE COMPANY WILL FURNISH A COPY OF SUCH AGREEMENT TO THE HOLDER HEREOF WITHOUT CHARGE UPON WRITTEN REQUEST.”

“THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED OR QUALIFIED UNDER THE SECURITIES ACT OF 1933 OR THE SECURITIES LAWS OF ANY STATE AND MAY BE OFFERED AND SOLD ONLY IF REGISTERED AND QUALIFIED PURSUANT TO THE RELEVANT PROVISIONS OF FEDERAL AND STATE SECURITIES LAWS OR IF THE COMPANY IS PROVIDED AN OPINION OF COUNSEL REASONABLY SATISFACTORY TO THE COMPANY THAT REGISTRATION AND QUALIFICATION UNDER FEDERAL AND STATE SECURITIES LAWS IS NOT REQUIRED.”

Other Legends

.  The stock certificates for the Shares shall be endorsed with any legends that may be required by state securities or other applicable laws.

Market Stand-Off Agreement

.  

A.Stand-Off. Purchaser agrees that Purchaser shall not transfer, make any short sale of, grant any option for the purchase of, or enter into any hedging or similar transaction with the same economic effect as a sale of, any Common Stock (or other securities) of the Company held by Purchaser (other than those included in the registration) during the one hundred eighty (180) day period following the date hereof (such period, the “Holding Period”) and during

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the ninety (90) day period following the effective date of any subsequent registration statement of the Company filed under the 1933 Act; provided that such restrictions with respect to any subsequent registration shall terminate one year from the date hereof.  The foregoing provisions shall not apply to the sale of any securities to an underwriter pursuant to an underwriting agreement and shall only be applicable to Purchaser if all then current officers and directors and greater than one percent (1%) stockholders of the Company enter into similar agreements.  The underwriters in connection with any public offering subject to this Section are intended third party beneficiaries and shall have the right to enforce the provisions hereof as though they were a party hereto.  The provisions hereof shall not apply to a registration relating solely to employee benefit plans on Form S‑8 or Rule 145 transactions on Form S‑4, or similar forms that may be promulgated in the future.  The Company may impose stop‑transfer instructions with respect to the securities subject to the provisions hereof until the end of the applicable periods.

B.Exclusions. The provisions of Section 6.1 shall not apply to:

1.transfers (A) by will, other testamentary document or intestate succession; or (B) by operation of law, such as pursuant to a qualified domestic order or as required by a divorce settlement (provided, however, that the transferee agrees to be bound in writing by the terms of this Agreement prior to such transfer, and such transfer shall not involve a disposition for value);

2.the establishment of a trading plan pursuant to Rule 10b5-1 promulgated under the Exchange Act, provided that such plan does not provide for transfers during the Holding Period; or

3.transfers by Purchaser to its shareholders as part of a distribution, or to any corporation, partnership or other entity that is its affiliate of Purchaser (provided, however, that the transferee agrees to be bound in writing by the terms of this Agreement prior to such transfer, and such transfer shall not involve a disposition for value).

7.Indemnification. The Company shall defend, protect, indemnify and hold harmless Purchaser and its officers, directors, employees and agents (the “Indemnitees”) to the fullest extent lawful from and against any and all actions, causes of action, suits, claims, losses (including losses from the diminution of value of any Shares), costs, penalties, fees, liabilities and damages, and expenses in connection therewith (irrespective of whether any such Indemnitee is a party to the action for which indemnification hereunder is sought), and including reasonable attorneys’ fees and disbursements (the “Indemnified Liabilities”), incurred by any Indemnitee as a result of, or arising out of, or relating to (a) any misrepresentation or breach of any representation or warranty made by the Company in this Agreement, or (b) any breach of any covenant, agreement or obligation of the Company contained in this Agreement. Notwithstanding anything in this Section 8, the Company will have no duty to indemnify the Indemnitees for Indemnified Liabilities in the aggregate in excess of $300,000.

Miscellaneous

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Notices

.  All notices under this Agreement must be in writing and shall be deemed given when delivered personally or by confirmed facsimile or email, one day after being

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sent by nationally recognized courier service, or three days after being sent by prepaid certified mail, to the address of the party to be noticed as set forth herein or such other address as such party last provided to the other party by written notice.

No Waiver

.  The failure of either party hereto in any instance to exercise any of its rights under this Agreement shall not constitute a waiver of any other rights that may subsequently arise under this Agreement.  No waiver of any breach or condition of this Agreement shall be deemed to be a waiver of any other or subsequent breach or condition.

Entire Agreement; Amendments and Waivers

.  This Agreement constitutes the entire agreement and understanding between the parties hereto with regard to the subject matter hereof and supersedes all prior discussions and agreements (whether oral or written) between the parties with respect thereto.  No amendments or waivers to this Agreement will be effective unless in writing and signed by the party against whom such amendment or waiver is to be enforced.  

Governing Law

.  This Agreement will be governed by the laws of the State of Delaware, without giving effect to the principles of conflict of laws.  With respect to any disputes arising out of or related to this Agreement, the parties consent to the jurisdiction of, and venue in, the state courts in Travis County in the State of Texas (or in the event of exclusive federal jurisdiction, the courts of the Western District of Texas).

Successors and Assigns

.  The provisions of this Agreement shall inure to the benefit of and be binding upon the Company and its successors and assigns.  Except as otherwise expressly provided in this Agreement to the contrary, the provisions of this Agreement shall inure to the benefit of and be binding upon Purchaser and Purchaser’s successors and assigns.

Counterparts

.  This Agreement may be executed in counterparts, each of which shall be deemed to be an original, but all of which together shall constitute one instrument.

Severability

.  If any provision of this Agreement is deemed void or unenforceable, such provision shall nevertheless be enforced to the fullest extent allowed by law, and the validity of the remainder of this Agreement shall not be affected.

Further Assurances

.  At any time or from time to time after the date of this Agreement, the parties agree to cooperate with each other, and at the request of any other party, to execute and deliver any further instruments or documents and to take all such further action as the other party may reasonably request in order to carry out the intent of the parties hereunder.

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IN WITNESS WHEREOF, the parties have executed this Agreement as of the date first indicated above.

Company:

PLUS THERAPEUTICS, INC.

By:

Name:

Title:

Address:

PURCHASER:

NANOTX, CORP.

By:

Name:

Title:

Address:

Exhibit 10.2

CONSENT AND NINTH AMENDMENT TO LOAN AND SECURITY AGREEMENT

THIS CONSENT AND NINTH AMENDMENT to Loan and Security Agreement (this “Amendment”) is made effective as of March 29, 2020 (the “Amendment Date”) and made, by and among OXFORD FINANCE LLC, a Delaware limited liability company with an office located at 133 North Fairfax Street, Alexandria, Virginia 22314 (in its individual capacity, “Oxford”; and in its capacity as Collateral Agent, “Collateral Agent”), the Lenders listed on Schedule 1.1 from time to time to the Loan Agreement (defined below) including Oxford in its capacity as a Lender (each a “Lender” and collectively, the “Lenders”) and PLUS THERAPEUTICS, INC., a Delaware corporation with offices located at 4200 Marathon Blvd., Suite 200, Austin, Texas 78756 (“Borrower”).

WHEREAS, Collateral Agent, Borrower and Lenders party thereto from time to time have entered into that certain Loan and Security Agreement, dated as of May 29, 2015 (as amended, supplemented or otherwise modified from time to time, the “Loan Agreement”) pursuant to which Lenders have provided to Borrower certain loans in accordance with the terms and conditions thereof;

WHEREAS, Borrower is proposing to enter into that certain Patent and Know-How License Agreement (in substantially the form attached hereto as Exhibit A (the “License Agreement”), on or about the date hereof, with NanoTx, Corp. dba NanoTX Therapeutics, Inc., a corporation organized and existing under the laws of Texas, having an address of 7979 Wurzbach Road, San Antonio, Texas 78229 (“NanoTx”), pursuant to which, among other things, Borrower will license certain intellectual property from NanoTx and will be obligated to make certain payments to NanoTx on the terms and subject to the conditions set forth therein;  

WHEREAS, Borrower has requested that Collateral Agent and Required Lenders consent to the transactions contemplated by the License Agreement, and Collateral Agent and Required Lenders have agreed to do so, on the terms and subject to the conditions set forth herein; and

WHEREAS, Borrower, Lenders and Collateral Agent desire to amend certain provisions of the Loan Agreement as provided herein and subject to the terms and conditions set forth herein.

NOW, THEREFORE, in consideration of the promises, covenants and agreements contained herein, and other good and valuable consideration, the receipt and adequacy of which are hereby acknowledged, Borrower and Oxford, in its capacity as the sole Lender and in its capacity as Collateral Agent hereby agree as follows:

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(b)Repayment.  

The following paragraph shall apply prior to the effectiveness of that certain Consent and Ninth Amendment to this Loan and Security Agreement: Borrower shall make monthly payments of interest only commencing on the first (1^st) Payment Date following the Funding Date of each Term Loan, and continuing on the Payment Date of each successive month thereafter through and including the Payment Date immediately preceding the Amortization Date.  Borrower agrees to pay, on the Funding Date of each Term Loan, any initial partial monthly interest payment otherwise due for the period between the Funding Date of such Term Loan and the first Payment Date thereof.  Commencing on the Amortization Date, and continuing on the Payment Date of each month thereafter until April 30, 2019, Borrower shall make consecutive monthly payments of principal (except that no payments of principal shall be made on the Payment Dates from September 1, 2017 through December 1, 2017; provided, further, that upon the occurrence of the I/O Extension Event payments of principal shall also not be made on the Payment Dates from January 1, 2018 through August 1, 2018) and applicable interest (regardless of whether or not on any given Payment Date a principal payment is due hereunder), in arrears, to each Lender, as calculated by Collateral Agent (which calculations shall be deemed correct absent manifest error) based upon: (1) the amount of such Lender’s Term Loan, (2) the effective rate of interest, as determined in Section 2.3(a), and (3) a repayment schedule equal to forty-two (42) months (except that as set forth above, no payments of principal shall be made on the Payment Dates from September 1, 2017 through August 1, 2018; provided, further, that payments of principal shall also not be made on the Payment Dates from September 1, 2018 through March 1, 2019).  Thereafter, commencing on May 1, 2019, Borrower shall make monthly payments of interest only on the Payment Date of each successive month through and including the Payment Date immediately preceding the Second Amortization Date.  Commencing on the Second Amortization Date, and continuing on each successive Payment Date thereafter, Borrower shall make consecutive equal monthly payments of principal, together with applicable interest, in arrears, to each Lender, as calculated by Collateral Agent (which calculations shall be deemed correct absent manifest error) based upon: (1) the amount of such Lender’s Term Loan, (2) the effective rate of interest, as determined in Section 2.3(a), and (3) a repayment schedule with respect to the Term Loans as set forth on the Amortization Table (as amended from time to time) attached to the Disbursement Letter entered into as of the Effective Date.  

Notwithstanding, anything herein to the contrary, the following paragraph shall apply on and after the effectiveness of that certain Consent and Ninth Amendment to this Loan and Security Agreement: (A) on March 31, 2020, Borrower shall make a principal prepayment of the Term Loans in the amount of Five Million Dollars

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($5,000,000.00) along with a payment of accrued but unpaid interest thereon in the amount of Forty Thousand Five Hundred Twenty Six Dollars and Ninety Two cents ($40,526.92) (which amounts shall be paid as part of, and without duplication of the payments included in, the March 2020 Special Payment being made on such date; and without relieving any obligation to pay the payment described in clause (iii) of the March 2020 Special Payment also due on such date); (B) upon Borrower’s making the March 2020 Special Payment in full, commencing on April 1, 2020, Borrower shall make monthly payments of interest only on the Payment Date of each successive month through and including the Payment Date immediately preceding the Third Amortization Date; and (C) commencing on the Third Amortization Date, and continuing on each successive Payment Date thereafter, Borrower shall make consecutive equal monthly payments of principal, together with applicable interest, in arrears, to each Lender, as calculated by Collateral Agent (which calculations shall be deemed correct absent manifest error) based upon: (1) the amount of such Lender’s Term Loan, (2) the effective rate of interest, as determined in Section 2.3(a), and (3) a repayment schedule with respect to the Term Loans as set forth on the Amortization Table (as amended from time to time) attached to the Disbursement Letter entered into as of the Effective Date.  All unpaid principal and accrued and unpaid interest with respect to the Term Loan is due and payable in full on the Maturity Date.  The Term Loan may only be prepaid in accordance with Sections 2.2(c) and 2.2(d).

(d)Permitted Prepayment of Term Loan.  Borrower shall have the option to prepay all, but, subject to the second and third paragraphs of this Section 2.2(d), not less than all, of the Term Loan advanced by the Lenders under this Agreement, provided Borrower, subject to the second and third paragraphs of this Section 2.2(d), (i) provides written notice to Collateral Agent of its election to prepay the Term Loan at least fifteen (15) days prior to such prepayment, and (ii) pays to the Lenders on the date of such prepayment, payable to each Lender in accordance with its respective Pro Rata Share, an amount equal to the sum of (A) all outstanding principal of the Term Loan plus accrued and unpaid interest thereon through the prepayment date, (B) the Final Payment, (C) the Prepayment Fee, plus (D) all other Obligations that are due and payable, including Lenders’ Expenses and interest at the Default Rate with respect to any past due amounts.

Notwithstanding anything herein to the contrary, Borrower shall promptly pay to each Lender (in accordance with its Pro Rata Share) (i) 75% of all proceeds received by Borrower from the issuance and sale by Borrower of its unsecured subordinated convertible debt, (ii) 75% of all proceeds received by Borrower in connection with a joint venture, collaboration or other partnering transaction, (iii) 75% of all proceeds received by Borrower in connection with any licenses, (iv) 75% of all proceeds received by Borrower in the form of dividends (other than non-cash dividends received from wholly owned Subsidiaries of Borrower) and (v) all net proceeds received by Borrower from sale or transfer of any assets of Borrower (provided, that strictly for (a) the Lorem Transaction, Borrower shall obligated to pay hereunder only One Million Sixty Hundred

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Fifty Thousand Dollars ($1,650,000) and (b) the Shirahama Transaction, Borrower shall obligated to pay hereunder only One Million Four Hundred Thousand Dollars ($1,400,000); provided, further, that nothing in this Section 2.2(d) is a consent to or meant to be construed as a consent to any disposition of any assets of Borrower not otherwise permitted by this Agreement, including, without limitation pursuant to the Lorem Transaction or the Shirahama Transaction).  For the purposes of clarification, (x) proceeds received from sale and issuance by Borrower of its equity securities (which are not in the form of convertible debt) shall not be subject to the payment obligations of Borrower under the immediately preceding sentence and (y) other than the March 2020 Special Payment, neither the License Agreement (as such term is defined in that certain Ninth Amendment and Consent to this Agreement), nor the transactions contemplated thereby shall give rise to any prepayment under this Section 2.2(d).  All such payments shall be applied to (A) payment of a portion of the outstanding principal of the Term Loans plus all accrued and unpaid interest thereon outstanding on such portion being prepaid, (B) the applicable Final Payment with respect to the portion of such Term Loans being prepaid, and (C) the applicable Prepayment Fee with respect to the portion of such Term Loans being prepaid.  For the purposes of clarity, any partial prepayment of Term Loans hereunder, including in connection with the March 2020 Special Payment shall be applied pro-rata to all outstanding amounts under each Term Loan, and shall be applied pro-rata within each Term Loan tranche to reduce amortization payments under Section 2.2(b) on a pro-rata basis.

Notwithstanding anything herein to the contrary, (I) on or before March 31, 2020, in addition to any other payments due on such date, if any, Borrower shall pay to each Lender (in accordance with its Pro Rata Share) an aggregate amount of Five Million Three Hundred Forty Eight Thousand Twenty Six Dollars and Ninety Two cents ($5,348,026.92) (“March 2020 Special Payment”) consisting of the following: (i) Five Million Dollars ($5,000,000.00), which amount shall be applied towards partial prepayment of the outstanding principal amount of the Term Loans, (ii) Forty Thousand Five Hundred Twenty Six Dollars and Ninety Two cents ($40,526.92), which amount constitutes all, and shall be applied towards payment, of the accrued but unpaid interest on the partial principal amount of Five Million Dollars ($5,000,000.00) being prepaid on such date and (iii) Three Hundred Seven Thousand Five Hundred Dollars ($307,500.00), which amount shall be applied towards the Final Payment with respect to the partial principal prepayment of Five Million Dollars ($5,000,000.00); and (II) in connection with such partial principal prepayment of Five Million Dollars ($5,000,000.00) no Prepayment Fee shall be required or be due and payable under this Agreement.

(l)  Ninth Amendment Fee.  Ninth Amendment Fee.  A fully earned and non-refundable ninth amendment fee in the amount of One Million Three Hundred Thousand Dollars ($1,300,000.00) which shall become due and payable upon the earlier of: (i) the Maturity Date, (ii) the acceleration of any Term Loan, or (iii) the prepayment of a Term

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Loan pursuant to Section 2.2(c) or (d) (other than a prepayment pursuant to the second or third paragraphs of Section 2.2(d)).

“First I/O Extension Equity Event” is the receipt by Borrower of gross cash proceeds of at least Five Million Dollars ($5,000,000.00) from the sale and issuance of its equity securities on or after April 1, 2020 and on or before April 30, 2021, which shall be unrestricted.

“Second I/O Extension Equity Event” is the receipt by Borrower of gross cash proceeds of at least Ten Million Dollars ($10,000,000.00) (inclusive of the proceeds used to satisfy the First I/O Extension Equity Event) from the sale and issuance of its equity securities on or after April 1, 2020 and on or before July 31, 2021, which shall be unrestricted.

“March 2020 Special Payment” is defined in Section 2.2(d) of this Agreement.

“Third Amortization Date” is (i) May 1, 2021, if the First I/O Extension Equity Event does not occur, (ii) August 1, 2021, if the First I/O Extension Equity Event occurs but the Second I/O Extension Equity Event does not occur and (iii) November 1, 2021, if both the First I/O Extension Equity Event and the Second I/O Extension Equity Event occur.

“Final Payment” is a payment (in addition to and not a substitution for the regular monthly payments of principal plus accrued interest) due on the earliest to occur of (a) the Maturity Date, or (b) the acceleration of any Term Loan, or (c) the prepayment of a Term Loan pursuant to Section 2.2(c) or (d), equal to the original principal amount of such Term Loan multiplied by the Final Payment Percentage, payable to Lenders in accordance with their respective Pro Rata Shares. For the avoidance of doubt, the calculation of any Final Payment shall not include the principal amount prepaid in accordance with Section 2.2(d) if a Final Payment based on such principal amount was made at the time of such prepayment, including for the avoidance of doubt, the principal prepayment of Five Million Dollars ($5,000,000.00) included in the March 2020 Special Payment.

“Maturity Date” is June 1, 2024.

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6

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IN WITNESS WHEREOF, the parties hereto have caused this Consent and Ninth Amendment to Loan and Security Agreement to be executed as of the date first set forth above.

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Exhibit A

[***] Certain confidential portions (indicated by brackets and asterisks) have been omitted from this exhibit in accordance with the rules of the Securities and Exchange Commission.

PATENT AND KNOW-HOW LICENSE AGREEMENT

THIS PATENT AND KNOW-HOW LICENSE AGREEMENT (this “Agreement”) dated March 29, 2020 (the “Effective Date”) is by and among NanoTx, Corp., a corporation organized and existing under the laws of Delaware, having an address of 7979 Wurzbach Road, San Antonio, Texas 78229 (“NanoTx” or “Licensor”) and Plus Therapeutics, Inc., a corporation organized and existing under the laws of Delaware, having an address of 4200 Marathon Blvd., Suite 200, Austin, Texas 78756 (“PLUS” or “Licensee”).  NanoTx and PLUS are sometimes referred to herein individually as a “Party” and collectively as the “Parties.”

WHEREAS, NanoTx is developing radiolabeled nanoliposomes for the treatment of cancer;

WHEREAS, NanoTx is the assignee of the Licensed Patents (as defined below) previously owned by The Board of Regents of the University of Texas System, University Case No. 2002.005.HSCS;

WHEREAS, PLUS is a clinical-stage pharmaceutical company focused on the discovery, development, and delivery of complex and innovative treatments for patients battling rare cancers; and

WHEREAS, PLUS desires to license the Licensed Patents to develop, manufacture and commercialize Licensed Products (as defined below) in the Field and in the Territory.

NOW THEREFORE, in consideration of the forgoing recitals, the representations, warranties and covenants set forth herein, and other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the Parties hereto hereby agree as follows:

1DEFINITIONS

For purposes of this Agreement, the following terms and variations on them shall have the following meanings, it being understood that words denoting the singular include the plural and vice versa:

1

2

3

4

5

6

(a)payments made in consideration for the issuance of equity or debt securities of Licensee to the extent not exceeding the fair market value thereof;

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(b)that portion of payments for direct or fully burdened expenses (collectively not to exceed one hundred fifty percent (150%) of direct expenses) associated with research or development as calculated in accordance with GAAP, to the extent that such expenses are separately listed and part of the sublicense;

(c)royalties on sales of Licensed Products by the Sublicensee (payment for which has been otherwise provided in Section 7.5 herein); and

(d)payments for supply of Licensed Products for use in clinical trials by or on behalf of, or for resale by, the Sublicensee.

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2LICENSE

3DEVELOPMENT; TRANSFER OF KNOW-HOW AND EXISTING REGULATORY DOCUMENTATION

3.1Transfer of Know-How.  Promptly (but in any event within ten (10) Business Days) following the Effective Date), NanoTx shall commence transferring and delivering to PLUS all

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Know-How in the possession or Control of NanoTx relating to the Licensed Product and complete such transfer within thirty (30) Calendar Days.  Know-How shall be provided in electronic form or other form in which it exists as of the Effective Date.  To the extent NanoTx subsequently identifies any Know-How that should have been transferred herein to PLUS, NanoTx will promptly provide or make available such additional Know-How to PLUS.

3.2Transfer of Existing Regulatory Documentation.  As of the Effective Date, NanoTx owns, possesses or Controls certain Regulatory Documentation relating to the Licensed Product.  The Parties will cooperate to transfer the ownership of all Regulatory Documentation relating to the Licensed Product to PLUS, which shall include, without limitation: (i) timing for the transfer of Regulatory Documentation (such as manufacturing protocols, IND sponsorship and maintenance and safety reporting), and (ii) timing for the transfer of regulatory licenses, filings or approvals (“Regulatory Transition Plan”), including but not limited to, executing all documentation to effectively transfer ownership of the sponsorship of the IND for nanoliposome encapsulated BMEDA-chelated ¹⁸⁶Rhenium, to PLUS.

3.3Development.

(a)After the Effective Date, the Parties will establish a Joint Steering Committee (“JSC”) to facilitate communication and provide a forum to discuss and exchange information on the overall strategic Development of Licensed Products.  The JSC will have the right to designate subcommittees from time to time, such as a Development, Manufacturing and/or a Regulatory Affairs subcommittee.  The JSC will consist of three (3) senior representatives from each Party with appropriate experience to serve on such committee.  Each Party will designate a JSC member who will be the primary contact on the JSC for that Party

(b)The JSC will cooperate to prepare a clinical plan involving the First Product, which shall include, without limitation: (i) an overview of the clinical trials conducted prior to the Effective Date, and (ii) an overview of the clinical trials anticipated to be conducted by the Parties after the Effective Date to support Regulatory Approvals of the Licensed Product, and related timelines (a “Clinical Development Plan”).  PLUS shall be solely responsible for the clinical operations, pharmacovigilance, medical monitoring and execution of the clinical studies outlined in the Clinical Development Plan, including all costs thereof, of the Licensed Product in the Field in the Territory.

(c)All decisions regarding the implementation of the Clinical Development Plan for clinical trials will be mutually agreed upon by the members of the JSC, including designating target completion dates for the collection of Milestone Payments under Section 7.3.  If the members of the JSC are unable to reach consensus on a particular issue within twenty (20) Calendar Days after such issue is referred to them then PLUS shall have the final decision-making authority over all decisions relating to the Development, Manufacturing and Commercialization of the Licensed Products.  Notwithstanding the foregoing, PLUS’ Executive Officer shall reasonably consider the NanoTx’s views and interest in reaching any decision under the JSC’s authority.

3.4Cooperation.  PLUS may engage NanoTx’s services (e.g., consulting agreements) to further research and development and to conduct further clinical studies for Licensed Products

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on terms to be mutually agreed upon, such terms to include reasonable compensation and an obligation by NanoTx to assign to PLUS any Inventions arising under such agreement.

3.5Commercially Reasonable Efforts. NanoTx shall use Commercially Reasonable Efforts to complete its obligations under Section 3.1 and 3.2.  PLUS shall use Commercially Reasonable Efforts (itself or through one or more Affiliates or Sublicensees) to complete its obligations under Section 3.3 and shall conduct all such Development activities in accordance with Applicable Laws, and, as applicable, Good Laboratory Practice and Good Clinical Practice as defined by FDA regulations.

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6COMMERCIALIZATION

Licensee shall itself, or through its Affiliates or Sublicensees, use Commercially Reasonable Efforts to Commercialize the Licensed Product in the Territory. Licensee will undertake such activities at its sole expense. Licensee have all decision-making authority with respect to the Commercialization of the Licensed Products.  Licensee shall be solely liable to meet or execute any and all compliances related to the Commercialization of the Licensed Products.  Subject to the Confidentiality section, Licensee agrees to provide Licensor with updates, no less than annually, on Licensee’s efforts to commercialize the Licensed Product.

7PAYMENT

(a)[***]

(b)[***]

(c)[***]

(d)[***]

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From expiration or after the date of any notice of termination is received by a Party, no milestones with respect to the Licensed Product shall be payable by PLUS to NanoTx, except to the extent any amounts are due but unpaid.

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From expiration or after the date of any notice of termination is received by a Party, no milestones with respect to the Licensed Product shall be payable by PLUS to NanoTx, except to the extent any amounts are due but unpaid.

Reductions to Royalties may apply as specified herein, but under no circumstances will the cumulative effect of such reductions reduce the Royalties to less [***] of annual Net Sales in any country in any Calendar Quarter (the “Minimum Royalties”).

Such Royalties will be payable country-by-country on a quarterly basis from the date of First Commercial Sale of the First Product until the following:

(a)In the United States, for the lesser of (i) [***] after first commercialization in the United States, (ii) [***], or (iii) [***]; and

(b)In Europe, for the lesser of (i) [***] after first commercialization of such Licensed Product in the Europe, (ii) [***] or (iii) [***].

On a country-by-country, PLUS’ obligation to pay Royalties will be reduced during each Calendar Quarter by [***] if at any time a direct competitor(s) to the First Product enters the market [***].  A product is not a Competing Product if PLUS has any financial interest in the product.

With respect to any additional Third Party license(s) required or useful for the development, manufacture or commercialization of nanoliposome encapsulated BMEDA-chelated radioisotope drugs as determined by PLUS (other than the Sublicense Agreement), [***].

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8REPORTS; AUDITS

8.1Notification of First Sale. Licensee shall notify Licensor the date on which Licensee, its Affiliates and/or the Sublicensees make a First Commercial Sale Licensed Products within [***] of occurrence.

8.2Royalty reports. PLUS shall submit to NanoTx [***], a written report setting forth for such [***] at least the following information:

(a)the number of Licensed Products sold by PLUS, its Affiliates and Sublicensees in each country;

(b)total billings for such Licensed Products;

(c)the gross amount of monies or cash equivalent or other consideration which is received for sales, leases, licenses or other modes of transfer of Licensed Products by PLUS;

(d)the identity of that consideration which is received instead of money for sales, leases, licenses or other modes of transfer of Licensed Products by PLUS;

(e)deductions from the gross amount as expressly permitted herein to determine the Net Sales thereof;

(f)the amount of Royalties due thereon, or, if no Royalties are due to NanoTx for any reporting period, the statement that no Royalties are due;

(g)the amount of Sublicensing Revenue received by PLUS; and

(h)the amount of other payments due to NanoTx, including but not limited to, running royalties and minimum annual royalty payments.

After termination or expiration of this Agreement, PLUS will continue to submit royalty reports and payments to NanoTx as per PLUS’ obligations under this Agreement until all Licensed Products made, used, marketed, leased or imported under this Agreement have been sold.

8.3Record keeping by PLUS. PLUS and its Affiliates shall maintain complete and accurate books and records of account, in accordance with generally accepted accounting principles in the United States, of all transactions and other business activities under this Agreement, sufficient to confirm the accuracy of all reports and invoices furnished by PLUS to NanoTx under this Agreement, and all payments by PLUS to NanoTx under this Agreement. Upon reasonable written notice to PLUS, but no more often than once per Calendar Year, PLUS shall permit, and shall cause its Affiliates to permit, an independent certified public accounting firm of

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national standing designated by NanoTx and accepted by PLUS (such acceptance not to be unreasonably withheld) to audit such books and records of account of PLUS and its Affiliates until three (3) years after the expiration of such Party’s payment obligation, in order to confirm the accuracy and completeness of any report made under this Section 8.3.  Prior to each such audit, such independent certified public accounting firm shall execute a confidentiality agreement that is reasonably acceptable to PLUS. The independent certified public accounting firm shall disclose to NanoTx only whether the audited reports are correct or incorrect and the specific details concerning any discrepancies.

8.4Underpayments/Overpayments. If such independent certified public accounting firm correctly concludes that additional royalties were owed during such period, PLUS shall pay such additional royalties within thirty (30) Calendar Days of the date NanoTx delivers to PLUS such accounting firm’s written report. [***].  For clarity, in all other circumstances the fees charged by such independent certified public accounting firm for the work associated with such underpayment audit shall be paid by PLUS. Any overpayments by PLUS will be credited against future royalty obligations owed under 7.5.

8.5Record Keeping by Sublicensee. PLUS shall include in each sublicense granted by it pursuant to this Agreement a provision requiring the Sublicensee to make reports to NanoTx, to keep and maintain records of sales made pursuant to such sublicense, and to grant access to such records by NanoTx’s independent certified public accounting firm to the same extent required of PLUS under this Agreement.

8.6Confidentiality. NanoTx shall treat all financial information subject to review under this Section 8, or under any agreement with a Sublicensee, in accordance with the confidentiality provisions of Section 11 of this Agreement, and shall cause its independent certified public accounting firm to enter into an acceptable confidentiality agreement with NanoTx obligating such independent certified public accounting firm to retain all such financial information of PLUS in confidence pursuant to such confidentiality agreement.

9INTELLECTUAL PROPERTY MATTERS

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10REPRESENTATIONS AND WARRANTIES

(a)NanoTx represents and warrants that it has full authority to execute, enter into and perform its obligation under this Agreement.

(b)NanoTx represents and warrants it the sole and exclusive owner of the Licensed Patents listed in Exhibit A, all of which are free and clear of any liens, charges and encumbrances that could adversely impact the licenses granted to Licensee under Section 2; and no other person, corporate or other private entity, or governmental entity or subdivision thereof, has or shall have any claim of ownership whatsoever with respect to the Licensed Patents listed in Exhibit A.

(c)NanoTx represents and warrants that Exhibit A sets forth a true and complete list of a Licensed Patents, and each such Licensed Patents, remains in full force and effect as of the Effective Date, and NanoTx will timely pay all filing and renewal fees with respect to such Licensed Patents unless otherwise agreed to in writing by the Parties.

(d)NanoTx represents and warrants that as of the Effective Date, NanoTx has complied with all applicable laws including any disclosure requirements, in connection with the filing, prosecution and maintenance of the Licensed Patents.

(e)NanoTx represents and warrants it the sole and exclusive owner of the Know-How, all of which are free and clear of any liens, charges and encumbrances that could adversely impact the licenses granted to Licensee under Section 2 or Licensees ability to transfer the Know-How as set forth in Section 3.1; and no other person, corporate or other private entity, or governmental entity or subdivision thereof, has or shall have any claim of ownership whatsoever with respect to the Know-How.

(f)NanoTx represents and warrants it the sole and exclusive owner of the Licensed Technology, all of which are free and clear of any liens, charges and encumbrances that could adversely impact the licenses granted to Licensee under Section 2; and no other person, corporate or other private entity, or governmental entity or subdivision thereof, has or shall have any claim of ownership whatsoever with respect to the Licensed Technology.

(g)As of the Effective Date, NanoTx has not: (i) assigned, transferred, conveyed or otherwise encumbered its right, title and interest in the Licensed Patents, Know-How or Licensed Technology, or (ii) granted any rights to any Third Party; in each case (i) and (ii) that would conflict with the rights granted to Licensor under this Agreement.

(h)As of the Effective Date, NanoTx represents and warrants it has disclosed to PLUS all Know-How and Regulatory Documentation relating to the Licensed Products, in each case that was generated by or on behalf of NanoTx.

(i)NanoTx represents and warrants it the sole and exclusive owner of the Regulatory Documentation existing prior to the Effective Date, all such Regulatory Documentation is true, correct and accurate and nothing prevents NanoTx’s ability to transfer ownership of such existing Regulatory Documentation as set forth in Section 3.2; and no other person, corporate or other

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private entity, or governmental entity or subdivision thereof, has or shall have any claim of ownership whatsoever with respect to such existing Regulatory Documentation.

(j)NanoTx represents and warrants that as of the date of the License Grant in Section 2, Licensor is not aware of any patentable Inventions (other than the Inventions covered or to be covered by the Licensed Technology) that if patented would be infringed by Licensee’s exercise of the Inventions included in the License Grant.

(k)NanoTx represents and warrants NanoTx it has no, and will not have any, obligations to any Third Party, including University of Texas System, to provide material, data, research and development collaborations and licenses, clinical trial participation, publication, or commercialization that could conflict with Licensor’s business.

(l)NanoTx represents and warrants that NanoTx is not, and none of its employees, nor any Third Party that conducted Development or Manufacture of the Licensed Products on behalf of NanoTx prior to the Effective Date, is, debarred by any Regulatory Authority, or is the subject of any debarment proceeding by any Regulatory Authority and, in the course of the discovery or pre-clinical development and clinical development prior to the Effective Date, NanoTx has not, and any Third Party acting on behalf of NanoTx have used any employee or consultant that is debarred by any Regulatory Authority or, is the subject of any debarment proceeding by any Regulatory Authority.

10.2NanoTx represents and warrants that as of the Effective Date, NanoTx has maintained insurance policies with minimum “A-“ Best rated insurance carriers to cover its indemnification obligations under Section 13.1, in each case with limits, as applicable: [***]

10.3Representations by PLUS.  PLUS represents and warrants that:

(a)PLUS is a corporation duly organized, validly existing and in good standing under the laws of state in which it is incorporated, and it has full right and authority to enter into this Agreement and to accept the rights and licenses granted as herein described.

(b)The execution, delivery and performance of this Agreement does not conflict with any other agreement, contract, instrument or understanding, oral or written, to which PLUS is a party, or by which it is bound, nor will it violate any law applicable to PLUS.

10.4Limitation of Liability. Notwithstanding anything to the contrary contained herein, no Party shall be liable to another Party under any theory for any special, incidental, indirect, consequential or other similar damages, or any punitive damages, whether arising directly or indirectly out of the transactions contemplated by this Agreement. To be clear, neither Party shall be entitled to recover for any lost profit or lost sale damages of any kind, whether those claimed damages are direct or indirect.

10.5DISCLAIMER.  EXCEPT AS OTHERWISE EXPRESSLY SET FORTH IN THIS AGREEMENT, NANOTX DISCLAIMS ALL WARRANTIES WHATSOEVER, WITH RESPECT TO THE LICENSED PRODUCTS, EITHER EXPRESS OR IMPLIED, INCLUDING WARRANTIES AS TO THE MERCHANTABILITY, FITNESS FOR A PARTICULAR

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PURPOSE, OR THAT THE MANUFACTURE, USE OR SALE OF THE LICENSED PRODUCTS WILL NOT INFRINGE ANY THIRD PARTY PATENTS.

11CONFIDENTIALITY

11.1Confidential Information. All Confidential Information disclosed by one Party to the other Party hereunder shall be maintained in confidence by the receiving Party and shall neither be disclosed to any Third Party nor used for any purpose except as set forth herein without the prior written consent of the disclosing Party, except as provided in Section 11.2, and except to the extent that such Confidential Information:

(a)is known by the receiving Party at the time of its receipt, and not through a prior disclosure by the disclosing Party, as documented by the receiving Party’s business records;

(b)is properly in the public domain by use and/or publication before its receipt from the disclosing Party, or thereafter enters the public domain through no fault of the receiving Party;

(c)[***]; or

(d)[***].

11.2Disclosure of Confidential Information. Each Party may disclose Confidential Information belonging to the other Party as expressly permitted by this Agreement, or if and to the extent such disclosure is reasonably necessary:

(a)to be disclosed by NanoTx to [***].

(b)to be disclosed by PLUS [***]; and

(c)to be disclosed to governmental or other regulatory agencies in order to obtain patents or to gain or maintain approval to conduct clinical studies or to market the Licensed Product, but such disclosure may be only to the extent reasonably necessary to obtain such patents or authorizations, and all reasonable steps shall be taken to protect the confidentiality of such Confidential Information.

11.3Disclosure by Law. If the receiving Party is required by judicial or administrative process or Applicable Laws to disclose Confidential Information that is subject to the non-disclosure provisions of this Section 11.3, such Party shall promptly inform the other Party of the disclosure that is being sought in order to provide the other Party an opportunity to challenge or limit the disclosure obligations. The Confidential Information that is disclosed by judicial or administrative process or Applicable Laws shall remain otherwise subject to the confidentiality and non-use provisions of this Section 11, and the Party disclosing the Confidential Information pursuant to judicial or administrative process or Applicable Laws shall, except where impracticable or legally impossible, take all steps reasonably necessary, including without limitation obtaining an order of confidentiality, to ensure the continued confidential treatment of such Confidential Information. Both Parties shall require their respective directors, officers and employees to whom the Confidential Information is disclosed to undertake confidentiality and non-use obligations consistent with the terms of this provision.

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(a)If termination occurs prior to initiation of Phase II (i.e., consistent with 21 U.S. CFR § 312.21(c)), PLUS shall transfer to NanoTx all Information and Regulatory Documentation Controlled by PLUS as of the effective date of termination and generated in the Development for such terminated License Product(s) in such country(ies), at NanoTx’s reasonable expense.

(b)If termination occurs after initiation of Phase II but prior to Regulatory Approval of such terminated License Product(s) in such country(ies), NanoTx shall pay PLUS a reasonable royalty rate should such License Product be Commercialized.  Upon NanoTx’s written request and at NanoTx’s reasonable expense, PLUS shall transfer to NanoTx all Information and Regulatory Documentation Controlled by PLUS as of the effective date of termination and generated in the Development for such terminated License Product(s) in such country(ies).

(c)If termination occurs following Regulatory Approval but prior to launch of such terminated License Product(s) in such country(ies), NanoTx shall pay PLUS for reasonable business expenses accrued by PLUS prior to termination and a reasonable royalty rate. Upon NanoTx’s written request and at NanoTx’s reasonable expense, PLUS shall assign and transfer to NanoTx all Information and Regulatory Documentation Controlled by PLUS as of the effective date of termination and generated in the Development and Manufacture for such terminated License Product(s) in such country(ies).

(d)If termination occurs following launch of such terminated License Product(s) in such country(ies), NanoTx shall have an option for ninety (90) Calendar Days to negotiate at market rates for the assignment and transfer to NanoTx all Information and Regulatory Documentation Controlled by PLUS as of the effective date of termination and generated in the Development, Manufacture and Commercialization for such terminated License Product(s) in such country(ies).

(e)If, at the time of such termination, PLUS is conducting any clinical trials, then at NanoTx’s election on a trial-by-trial and site-by-site basis, PLUS will cooperate with NanoTx to transfer the conduct of all such clinical trials at such sites to NanoTx and NanoTx shall assume

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any and all liability, at its expense, for such clinical trials as such sites after the effective date of such termination, or PLUS will wind down the conduct of any such clinical trial or site which is not assumed by NanoTx.

(f)NanoTx would fully and forever release and discharge PLUS and its Affiliates, and Sublicensees, from any and all claims, demands, liabilities, obligations, responsibilities, suits, actions and causes of action, known or unknown, past, present or future, or otherwise, arising out of or relating to this Agreement or a breach of Pfizer’s rights and obligations under this Agreement; provided however, that the foregoing release does not discharge any failure to make payments.

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14MISCELLANEOUS

14.1Independent Contractors. In the exercise of their respective rights, and the performance of their respective obligations, under this Agreement, the Parties are, and shall remain, independent contractors. Nothing in this Agreement shall be construed to constitute the Parties as partners, joint venturers, or participants in a joint enterprise or undertaking, or to constitute either of the Parties as the agent of the other Party for any purpose whatsoever. Neither Party shall bind, or attempt to bind, the other Party hereto to any contract or the performance of any other obligation, or represent to any Third Party that it is authorized to enter into any contract or binding obligation on behalf of the other Party hereto.

14.2Assignment. Except as expressly set forth in this Agreement, neither Party shall have the right or the power to assign or otherwise transfer, in whole or in part, any of its rights, or delegate the performance of any of its obligations under this Agreement, except that either Party may assign its rights under this Agreement to a successor to all or substantially all of the assigning Party’s activities related to this Agreement, whether by transfer of assets or capital stock, issuance of capital stock, merger, Change in Control, or otherwise, provided that such successor agrees in writing to be bound by the obligations of the assigning Party.  Any permitted assignment shall not relieve the assigning or delegating Party of any of its obligations under this Agreement.

14.3Force Majeure. Neither Party shall be liable for any failure to perform, or any delay in the performance of, any of its obligations under this Agreement to the extent, but only to the extent, that such Party’s performance is prevented by the occurrence of an event of force majeure; provided, however, that with respect to a failure to make payment due to an event of force majeure, the non-performing Party shall be required to make such payment as quickly as possible but in any event, even if the force majeure continues, within thirty (30) Calendar Days from the date that the force majeure began; provided, further, however, that if an event of force majeure prevents either Party from making any payment to the other Party in a timely manner, as provided in Section 7, interest on such unpaid amount shall nonetheless accrue at the 30 year U.S. government treasury rate. For purposes of this Section 14.3, an event of force majeure shall mean and include, war, civil war, insurrection, rebellion, civil unrest, fire, flood, earthquake, adverse weather conditions, epidemic, pandemic or disease outbreak (including the COVID-19 virus) military or usurped power or confiscation, terrorist activities, embargo, strike, lockout, labor unrest, unavailability of supplies, materials or transportation, acts of the public enemy, acts of government authorities

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(including but not limited to the refusal of the competent Government Agencies to issue required Regulatory Approvals), and, in general, any other cause or condition beyond the reasonable control of the Party whose performance is affected thereby. If the Party’s performance is affected by the occurrence of any event of force majeure, that Party shall furnish immediate written notice thereof to the other Party hereto.

14.4Notices.  Any notices required or permitted under this Agreement will be in writing, will refer specifically to this Agreement, and will be sent by recognized national or international overnight courier, confirmed facsimile transmission (provided that duplicative copy is provided via confirmed electronic mail, registered mail or certified mail), confirmed electronic mail, or registered or certified mail, postage prepaid, return receipt requested, or delivered by hand to the address as set forth herein.  Notices under this Agreement will be deemed to be duly given: (a) when delivered by hand; (b) upon confirmed electronic mail transmission; (c) two Business Days after deposit with a recognized national or international courier; or (d) on the delivery date indicated in the return receipt for registered or certified mail.  A party may change its contact information immediately upon written notice to the other party in the manner provided in this, Section 14.4.

If to NanoTx, Corp.

NanoTx, Corp.
ATTN: President
7979 Wurzbach Road
San Antonio, Texas 78229

If to PLUS Therapeutics, Inc.:

Plus Therapeutics, Inc.
ATTN: President & CEO
4200 Marathon Blvd., Suite 200
Austin, Texas 78756

14.5Dispute Resolution.

(a)Except for any “Excluded Claim” (defined in Section 14.5(g) below), the Parties shall negotiate in good faith and use reasonable efforts to settle any dispute, controversy or claim arising from or related to this Agreement, or the breach thereof, as follows. Any Party shall give the other Party written notice of any dispute, controversy or claim not resolved in the normal course of business.  Within fifteen (15) Business Days from the date of delivery of such notice, the receiving Party shall submit to the other Party a written response.  The notice and response shall include (a) a statement of that Party’s position and a summary of arguments supporting that position, and (b) the name and title of the executive who will represent that Party and of any other person who will accompany the executive.  Within thirty (30) Business Days from the date of delivery of the initial notice, the executives of both Parties shall meet at a mutually acceptable time and place, and thereafter as often as they reasonably deem necessary, to attempt to resolve the dispute, controversy or claim. These executives shall have the authority to settle the dispute and shall be at a higher level of management than the persons with direct responsibility for

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administration of this Agreement. All negotiations pursuant to this paragraph are confidential and shall be treated as compromise and settlement negotiations for purposes of applicable rules of evidence.  

(b)If the Parties do not fully settle within thirty (30) Calendar Days of such meeting, and a Party wishes to pursue the matter, each such dispute, controversy or claim that is not an Excluded Claim shall be finally resolved by binding arbitration in accordance with the Commercial Arbitration Rules and Supplementary Procedures for Large Complex Disputes of the American Arbitration Association (“AAA”), and judgment on the arbitration award may be entered in any court having jurisdiction thereof.

(c)The arbitration shall be conducted by a panel of three (3) persons experienced in the pharmaceutical business (provided that such arbitrators are not required to be selected from AAA’s list of arbitrators) as follows: (a) within ten (10) Business Days after initiation of arbitration, each Party shall select one (1) person to act as arbitrator, and (b) the two (2) Party-selected arbitrators shall select a third arbitrator within five (5) Business Days of their appointment. If the arbitrators selected by the Parties are unable or fail to agree upon the third arbitrator, the third arbitrator shall be appointed promptly by the AAA. The place of arbitration shall be Waco, Texas.

(d)Either Party may apply to the arbitrators for any applicable interim injunctive relief until the arbitration award is rendered or the controversy is otherwise resolved. Either Party also may, without waiving any remedy under this Agreement, seek from any court having jurisdiction any injunctive or provisional relief necessary to protect the rights or property of that Party pending the arbitration award. The arbitrators shall have no authority to award punitive or any other type of damages not measured by a Party’s compensatory damages. Each Party shall bear its own costs and expenses and attorneys’ fees and an equal share of the arbitrators’ and any administrative fees of arbitration.

(e)Except to the extent necessary to confirm an award, or as may be required by applicable law, rule or regulation, neither a Party nor an arbitrator may disclose the existence, content, or results of an arbitration without the prior written consent of both Parties. In no event shall an arbitration be initiated after the date when commencement of a legal or equitable proceeding based on the dispute, controversy or claim would be barred by the applicable law or statute of limitations.

(f)The Parties agree that, in the event of a dispute over the nature or quality of performance under this Agreement, neither Party may terminate the Agreement until final resolution of the dispute through arbitration or other judicial determination. The Parties further agree that any payments made pursuant to this Agreement pending resolution of the dispute shall be refunded if an arbitrator or court determines that such payments are not due.

(g)As used in this Section 14.5, the term “Excluded Claim” shall mean a dispute, controversy or claim that concerns: (a) the validity or infringement of a patent, trademark or copyright; (b) any antitrust, anti-monopoly or competition law or regulation, whether or not statutory; or (c) the need to seek preliminary or injunctive measures or other equitable relief (e.g., in the event of a potential or actual breach of the confidentiality and non-use provisions in Section

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11). An Excluded Claim need not be resolved through the procedure described in Sections 14.5(a) – 14.5(f) and may be immediately brought in a court of competent jurisdiction.

14.6Severability. If any provision of this Agreement is determined by any court or administrative tribunal of competent jurisdiction in the Territory to be invalid or unenforceable under Applicable Laws, the Parties shall negotiate in good faith a replacement provision that is commercially equivalent, to the maximum extent permitted by the Applicable Laws, to such invalid or unenforceable provision. The invalidity or unenforceability of any provision of this Agreement shall not affect the validity or enforceability of the other provisions of this Agreement.

14.7Governing Law. This Agreement shall be governed by and construed exclusively in accordance with the laws of State of Texas and, with respect to the Licensed Patents and related matters, the patent laws of the relevant patent granting jurisdiction (except that as between the Parties, inventorship shall be determined under United States patent law), without reference to any rules of conflicts of law or renvoi.

14.8Counterparts. This Agreement may be executed in any number of counterparts, each of which shall be deemed to be an original, and all of which together shall constitute one and the same instrument. Each party acknowledges that an original signature or a copy thereof transmitted by facsimile or by pdf shall constitute an original signature for purposes of this Agreement.

14.9Headings. The subject headings of this Agreement are included for purposes of convenience only and shall not affect the construction or interpretation of any provision of this Agreement.

14.10Further Actions. Each Party agrees to execute, acknowledge and deliver such further instruments, and to do all such other acts, as may be necessary or appropriate in order to carry out the purposes and intent of this Agreement.

14.11Entire Agreement and Amendments. This Agreement, together with all Exhibits attached hereto, constitutes the entire agreement between the Parties, and supersedes all prior agreements, understandings and communications between the Parties, with respect to the subject matter hereof. No modification or amendment of this Agreement, including but not limited to this Section 14.11, shall be binding upon the Parties unless in writing and executed by the duly authorized representative of each of the Parties.

14.12Waivers. The failure by either Party hereto to assert any of its rights hereunder, including, but not limited to, the right to terminate this Agreement due to a breach or default by the other Party hereto, shall not be deemed to constitute a waiver by that Party of its right thereafter to enforce each and every provision of this Agreement in accordance with its terms.

[Signature page follows]

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IN WITNESS WHEREOF, the Parties have caused this Agreement to be executed as of the Effective Date, by their duly authorized representatives in its name and on its behalf.

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EXHIBIT A

LICENSED PATENTS

[REDACTED]

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Exhibit B

PLUS THERAPEUTICS, INC.
COMMON Stock Purchase Agreement

THIS COMMON STOCK PURCHASE AGREEMENT (the “Agreement”) is entered into effective as of [●], 2020, by and between Plus Therapeutics, Inc., a Delaware corporation (the “Company”), and NanoTx, Corp., a Delaware corporation (“Purchaser”) pursuant to that certain License Agreement between the Company and the Purchaser dated as of March 29, 2020 (the “License Agreement”).

1.Purchase of Shares

In partial consideration for Purchaser’s license to the Company of certain intellectual property under the License Agreement, the Company hereby issues to Purchaser, [●] shares (the “Shares”) of the Company’s Common Stock (the “Common Stock”), valued at the per share price of $[●] for an aggregate value of $300,000.

2.Securities Law Compliance

2.1Exemption from Registration

The sale of the Shares has not been registered under the Securities Act of 1933, as amended (the “1933 Act”), or registered or qualified under applicable state securities laws in reliance upon certain exemptions from such registration and qualification.  The Shares must be held indefinitely and may not be resold, transferred or otherwise disposed of without registration under the 1933 Act and registration or qualification under applicable state securities laws or an opinion of counsel, in form and substance reasonably satisfactory to the Company, that such registration and qualification is not required.  

2.2Representations and Warranties of the Purchaser

In connection with the purchase of the Shares, Purchaser represents to the Company as follows:

(a)This Agreement has been duly and validly authorized, executed and delivered on behalf of the Purchaser and is a valid and binding agreement of the Purchaser enforceable against the Purchaser in accordance with its terms, subject as to enforceability to general principles of equity and to applicable bankruptcy, insolvency, reorganization, moratorium, liquidation and other similar laws relating to, or affecting generally, the enforcement of applicable creditors' rights and remedies.

(b)Purchaser is aware of the Company’s business affairs and financial condition and has acquired sufficient information about the Company to reach an informed and knowledgeable decision to acquire the Shares.  Purchaser is purchasing the Shares for investment for Purchaser’s own account and not with a view to, or for resale in connection with, any “distribution” thereof within the meaning of the 1933 Act or under any applicable state securities laws.  Purchaser does not have any present intention to transfer the Shares to any other party.  

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Purchaser understands that the exemption from registration under the 1933 Act for the issuance of the Shares depends in part upon the bona fide nature of Purchaser’s investment intent as expressed in this Agreement.

(c)Purchaser understands that the Shares are “restricted securities” under federal and state securities laws and that, pursuant to these laws, Purchaser must hold the Shares indefinitely unless they are registered and qualified under such laws or an exemption from such registration and qualification is available.  Purchaser acknowledges that the Company has no obligation to register or qualify the Shares for resale.  Purchaser further acknowledges that, if an exemption from registration or qualification is available, it may be conditioned on certain requirements, including, but not limited to, the time and manner of sale, the holding period for the Shares and requirements relating to the Company, which are outside of Purchaser’s control and which the Company is under no obligation, and may not be able, to satisfy.

(d)Purchaser believes that an investment in the Shares is suitable for Purchaser based on Purchaser’s investment objectives and financial needs, and Purchaser is able to bear the economic risk of an investment in the Shares.  Purchaser has such knowledge and experience in financial and business matters as to make Purchaser capable of evaluating the risks of the prospective investment and to make an informed investment decision and is able to bear the economic risk of an investment in the Shares.  Purchaser has either (i) preexisting personal or business relationships with the Company or any of its officers, directors or controlling persons, or (ii) the capacity to protect Purchaser’s own interests in connection with the purchase of the Shares by virtue of the business or financial expertise of Purchaser or professional advisors to Purchaser who are unaffiliated with and who are not compensated by the Company or any of its affiliates, directly or indirectly.

(e)Purchaser realizes that an investment in the Shares is highly speculative and involves a high degree of risk, including, without limitation, the developmental stage of the Company, the need for additional capital, the ability of the Company to develop its products and services on a timely basis or at all, the market acceptance of the Company’s products or services, the rapid technological change and competition in the industry and the ability of the Company to assert and protect its intellectual property rights.

(f)The Purchaser understands that no U.S. federal or state agency or any other government or governmental agency has passed on or made any recommendation or endorsement of the Shares or the fairness or suitability of an investment in the Shares nor have such authorities passed upon or endorsed the merits of the offering of the Shares.

(g)The Purchaser represents and warrants to the Company that at no time prior to the date of this Agreement has the Purchaser, its agents, representatives or affiliates engaged in or effected, in any manner whatsoever, directly or indirectly, any (i) "short sale" (as such term is defined in Rule 200 of Regulation SHO of the 1933 Act or the Securities Exchange Act of 1934, as amended (the “Exchange Act”)) of the Common Stock or (ii) hedging transaction, which establishes a net short position with respect to the Common Stock.

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3.Representations and Warranties of the Company.

3.1Organization. The Company is duly organized, validly existing and in good standing under the laws of state in which it is incorporated, and it has full right and authority to enter into this Agreement and to accept the rights and licenses granted as herein described.

3.2Authorization; Enforcement. The Company has the requisite corporate power and authority to enter into and to consummate the transactions contemplated by this Agreement and otherwise to carry out its obligations hereunder. The execution and delivery of this Agreement by the Company and the consummation by it of the transactions contemplated hereby have been duly authorized by all necessary action on the part of the Company. This Agreement has been duly executed by the Company and, when delivered in accordance with the terms hereof, will constitute the valid and binding obligation of the Company enforceable against the Company in accordance with its terms except (i) as limited by general equitable principles and applicable bankruptcy, insolvency, reorganization, moratorium and other laws of general application affecting enforcement of creditors’ rights generally, (ii) as limited by laws relating to the availability of specific performance, injunctive relief or other equitable remedies and (iii) insofar as indemnification provisions may be limited by applicable law.

3.3Capitalization. As of March 20, 2020, the authorized capital stock of the Company consists of 100,000,000 shares of Common Stock and 5,000,000 of preferred stock, par value $0.001, of which 3,880,588 shares of Common Stock were issued and outstanding. All such outstanding shares have been, or upon issuance will be, validly issued, fully paid and nonassessable. Except as disclosed in the Company Reports (as defined below), as of the date hereof, (i) no shares of the Company’s capital stock are subject to preemptive rights, (ii) there are no outstanding options, warrants, scrip, rights to subscribe to, calls or commitments of any character whatsoever relating to, or securities or rights convertible into, any shares of capital stock of the Company, or contracts, commitments, understandings or arrangements by which the Company is or may become bound to issue additional shares of capital stock of the Company or options, warrants, scrip, rights to subscribe to, calls or commitments of any character whatsoever relating to, or securities or rights convertible into, any shares of Common Stock of the Company, (iii) there are no agreements or arrangements under which the Company is obligated to register the sale of any of its securities under the Securities Act (except this Agreement), (iv) there are no outstanding securities or instruments of the Company which contain any redemption or similar provisions, and there are no contracts, commitments, understandings or arrangements by which the Company is or may become bound to redeem a security of the Company, (v) there are no securities or instruments containing anti-dilution or similar provisions that will be triggered by the issuance of the Shares as described in this Agreement and (vi) the Company does not have any stock appreciation rights or “phantom stock” plans or agreements or any similar plan or agreement.

3.4Issuance of Shares. Upon issuance and payment therefor in accordance with the terms and conditions of this Agreement, the Shares shall be validly issued, fully paid and nonassessable and free from all taxes, liens and charges.

3.5No Conflicts. The execution, delivery and performance of this Agreement by the Company and the consummation by the Company of the transactions contemplated hereby do not and will not (i) conflict with or violate any provision of the Company’s certificate or articles

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of incorporation, bylaws or other organizational or charter documents, (ii) conflict with, or constitute a default (or an event which with notice or lapse of time or both would become a default) under, or give to others any rights of termination, amendment, acceleration or cancellation of any material agreement, indenture or instrument to which the Company or any of its subsidiaries is a party or (iii) conflict with or result in a violation of any law, rule, regulation, order, judgment, injunction, decree or other restriction of any court or governmental body to which the Company or any of its subsidiaries is subject, or by which any property or asset of the Company or any of its subsidiaries is bound or affected, except in the case of conflicts, defaults, terminations, amendments, accelerations, cancellations and violations under clauses (ii) and (iii), which could not reasonably be expected to result in a material adverse effect on the assets, business, financial condition, liabilities or results of operations of the Company (a “Material Adverse Effect”).

3.6Brokers’ Fees. The Company has no liability or obligation to pay any fees or commissions to any broker, finder, or agent with respect to the transactions contemplated by this Agreement.

3.7SEC Reports; Internal Controls and Procedures; Financial Statements.

(a)The Company has filed with the United States Securities and Exchange Commission (the “SEC”) all statements, reports, schedules, forms and other documents required to be filed by the Company with the SEC since January 1, 2019 on a timely basis or has received a valid extension of such time of filing and has filed any such documents prior to the expiration of any such extension (the foregoing, collectively, the “Company Reports”). As of the time it was filed with the SEC (or, if amended or superseded by a filing prior to the date of this Agreement, then on the date of such filing) each of the Company Reports (i) was accurate and complete; (ii) complied as to form with the applicable requirements of the Exchange Act (as the case may be) and the applicable rules and regulations of the SEC thereunder; and (iii) did not contain any untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading.

(b)The consolidated financial statements (including any related notes) contained or incorporated by reference in the Company Reports (as amended prior to the date of this Agreement): (i) complied as to form in all material respects with the published rules and regulations of the SEC applicable thereto; (ii) were prepared in accordance with generally accepted accounting principles in the United States (“GAAP”) applied on a consistent basis throughout the periods covered (except as may be indicated in the notes to such financial statements or, in the case of unaudited financial statements, as permitted by Form 10-Q, Form 8-K or any successor form under the Exchange Act, and except that the unaudited financial statements may not contain footnotes and are subject to normal and recurring year-end adjustments that will not, individually or in the aggregate, be material in amount), and (iii) fairly presented, in all material respects, the consolidated financial position of the Company and its consolidated subsidiaries as of the respective dates thereof and the consolidated results of operations and cash flows of the Company and its consolidated subsidiaries for the periods covered thereby. No financial statements of any entity other than the Company and its consolidated subsidiaries are required by GAAP to be included in the consolidated financial statements of the Company. With respect to the financial statements (including any related notes) contained or incorporated by reference in the Company

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Reports, there have been no deficiencies or weaknesses identified in writing by the Company or the Company’s independent auditors (whether current or former) in the design or operation of internal controls of financial reporting utilized by the Company and its consolidated subsidiaries that would have a Material Adverse Effect.

(c)Except as disclosed in the Company Reports, none of the Company or any of its consolidated subsidiaries has any liabilities or obligations of any nature (whether accrued, absolute, contingent or otherwise), except for liabilities or obligations (i) that were incurred after December 31, 2019 in the ordinary course of business consistent with past practice, (ii) that were set forth on the Company financial statements for the year ended December 31, 2019, (iii) that were incurred in connection with this Agreement and the License Agreement and the transactions contemplated thereby, or (iv) that would not reasonably be expected to result in a Material Adverse Effect.

3.8Compliance with Laws; Permits. The business of the Company or any of its subsidiaries is, and since December 31, 2019 has been, conducted in compliance in all material respects with all laws applicable to the Company or such subsidiary or by which any property, asset or right of the Company or such subsidiary is bound except as would not reasonably be expected to result in a Material Adverse Effect.

3.9Absence of Certain Changes or Events. Except as disclosed in the Company Reports, since December 31, 2019, (i) the Company and its subsidiaries have conducted their respective businesses in all material respects in the ordinary course, consistent with past practice, and (ii) the Company has not taken any steps, and does not currently expect to take any steps, to seek protection pursuant to title 11, U.S. Code, or any similar federal or state law for the relief of debtor nor does the Company or any of its subsidiaries have any knowledge or reason to believe that its creditors intend to initiate involuntary bankruptcy or insolvency proceedings.

3.10Litigation. There is no action, suit or proceeding pending or, to the knowledge of the Company, threatened against or affecting the Company, any subsidiary of the Company or any of their respective properties before or by any court, arbitrator, governmental or administrative agency or regulatory authority which (i) adversely affects or challenges the legality, validity or enforceability of any of this Agreement or the Shares or (ii) would reasonably be expected to result in a Material Adverse Effect.

3.11Intellectual Property.

(a)The Company and its subsidiaries own or possess adequate rights or licenses to use all material trademarks, trade names, service marks, service mark registrations, service names, patents, patent rights, copyrights, inventions, licenses, approvals, governmental authorizations, trade secrets and rights necessary to conduct their respective businesses as now conducted.  None of the Company's material trademarks, trade names, service marks, service mark registrations, service names, patents, patent rights, copyrights, inventions, licenses, approvals, government authorizations, trade secrets or other intellectual property rights have expired or terminated, or, by the terms and conditions thereof, could expire or terminate within two years from the date of this Agreement.  The Company and its subsidiaries do not have any knowledge of any infringement by the Company or its subsidiaries of any material trademark, trade name

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rights, patents, patent rights, copyrights, inventions, licenses, service names, service marks, service mark registrations, trade secret or other similar rights of others, or of any such development of similar or identical trade secrets or technical information by others, and there is no claim, action or proceeding being made or brought against, or to the Company's knowledge, being threatened against, the Company or its subsidiaries regarding trademark, trade name, patents, patent rights, invention, copyright, license, service names, service marks, service mark registrations, trade secret or other infringement, which could reasonably be expected to have a Material Adverse Effect.

4.Reports Under Exchange Act. With a view to making available to Purchaser the benefits of Rule 144 and any other rule or regulation of the SEC that may at any time permit Purchaser to sell securities of the Company to the public without registration, the Company shall: (a) make and keep available adequate current public information, as those terms are understood and defined in Rule 144; (b) use commercially reasonable efforts to file with the SEC in a timely manner all reports and other documents required of the Company under the 1933 Act and the Exchange Act; and (c) furnish to Purchaser, so long as Purchaser owns Shares, forthwith upon request (i) to the extent accurate, a written statement by the Company that it has complied with the reporting requirements of Rule 144, the 1933 Act, and the Exchange Act, and (ii) such other information as may be reasonably requested in availing Purchaser of any rule or regulation of the SEC that permits the selling of any such securities without registration.

5.Legends on Stock Certificates

5.1Restrictive Legends

The stock certificates for the Shares shall be endorsed with the following restrictive legends:

“THE SECURITIES REPRESENTED BY THIS CERTIFICATE MAY NOT BE SOLD, ASSIGNED, TRANSFERRED, ENCUMBERED OR OTHERWISE DISPOSED OF, EXCEPT IN COMPLIANCE WITH THE TERMS OF A WRITTEN AGREEMENT BETWEEN THE COMPANY AND THE INITIAL HOLDER HEREOF.  SUCH AGREEMENT PROVIDES FOR RESTRICTIONS ON TRANSFER OF THE SECURITIES, INCLUDING RIGHTS OF FIRST REFUSAL.  THE COMPANY WILL FURNISH A COPY OF SUCH AGREEMENT TO THE HOLDER HEREOF WITHOUT CHARGE UPON WRITTEN REQUEST.”

“THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED OR QUALIFIED UNDER THE SECURITIES ACT OF 1933 OR THE SECURITIES LAWS OF ANY STATE AND MAY BE OFFERED AND SOLD ONLY IF REGISTERED AND QUALIFIED PURSUANT TO THE RELEVANT PROVISIONS OF FEDERAL AND STATE SECURITIES LAWS OR IF THE COMPANY IS PROVIDED AN OPINION OF COUNSEL REASONABLY SATISFACTORY TO THE COMPANY THAT REGISTRATION AND QUALIFICATION UNDER FEDERAL AND STATE SECURITIES LAWS IS NOT REQUIRED.”

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5.2Other Legends

The stock certificates for the Shares shall be endorsed with any legends that may be required by state securities or other applicable laws.

6.Market Stand-Off Agreement

6.1Stand-Off. Purchaser agrees that Purchaser shall not transfer, make any short sale of, grant any option for the purchase of, or enter into any hedging or similar transaction with the same economic effect as a sale of, any Common Stock (or other securities) of the Company held by Purchaser (other than those included in the registration) during the one hundred eighty (180) day period following the date hereof (such period, the “Holding Period”) and during the ninety (90) day period following the effective date of any subsequent registration statement of the Company filed under the 1933 Act; provided that such restrictions with respect to any subsequent registration shall terminate one year from the date hereof.  The foregoing provisions shall not apply to the sale of any securities to an underwriter pursuant to an underwriting agreement and shall only be applicable to Purchaser if all then current officers and directors and greater than one percent (1%) stockholders of the Company enter into similar agreements.  The underwriters in connection with any public offering subject to this Section are intended third party beneficiaries and shall have the right to enforce the provisions hereof as though they were a party hereto.  The provisions hereof shall not apply to a registration relating solely to employee benefit plans on Form S‑8 or Rule 145 transactions on Form S‑4, or similar forms that may be promulgated in the future.  The Company may impose stop‑transfer instructions with respect to the securities subject to the provisions hereof until the end of the applicable periods.

6.2Exclusions. The provisions of Section 6.1 shall not apply to:

(a)transfers (A) by will, other testamentary document or intestate succession; or (B) by operation of law, such as pursuant to a qualified domestic order or as required by a divorce settlement (provided, however, that the transferee agrees to be bound in writing by the terms of this Agreement prior to such transfer, and such transfer shall not involve a disposition for value);

(b)the establishment of a trading plan pursuant to Rule 10b5-1 promulgated under the Exchange Act, provided that such plan does not provide for transfers during the Holding Period; or

(c)transfers by Purchaser to its shareholders as part of a distribution, or to any corporation, partnership or other entity that is its affiliate of Purchaser (provided, however, that the transferee agrees to be bound in writing by the terms of this Agreement prior to such transfer, and such transfer shall not involve a disposition for value).

7.Indemnification. The Company shall defend, protect, indemnify and hold harmless Purchaser and its officers, directors, employees and agents (the “Indemnitees”) to the fullest extent lawful from and against any and all actions, causes of action, suits, claims, losses (including losses from the diminution of value of any Shares), costs, penalties, fees, liabilities and damages, and expenses in connection therewith (irrespective of whether any such Indemnitee is a party to the action for which indemnification hereunder is sought), and including reasonable attorneys’ fees

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and disbursements (the “Indemnified Liabilities”), incurred by any Indemnitee as a result of, or arising out of, or relating to (a) any misrepresentation or breach of any representation or warranty made by the Company in this Agreement, or (b) any breach of any covenant, agreement or obligation of the Company contained in this Agreement. Notwithstanding anything in this Section 8, the Company will have no duty to indemnify the Indemnitees for Indemnified Liabilities in the aggregate in excess of $300,000.

8.Miscellaneous

8.1Notices

All notices under this Agreement must be in writing and shall be deemed given when delivered personally or by confirmed facsimile or email, one day after being sent by nationally recognized courier service, or three days after being sent by prepaid certified mail, to the address of the party to be noticed as set forth herein or such other address as such party last provided to the other party by written notice.

8.2No Waiver

The failure of either party hereto in any instance to exercise any of its rights under this Agreement shall not constitute a waiver of any other rights that may subsequently arise under this Agreement.  No waiver of any breach or condition of this Agreement shall be deemed to be a waiver of any other or subsequent breach or condition.

8.3Entire Agreement; Amendments and Waivers

This Agreement constitutes the entire agreement and understanding between the parties hereto with regard to the subject matter hereof and supersedes all prior discussions and agreements (whether oral or written) between the parties with respect thereto.  No amendments or waivers to this Agreement will be effective unless in writing and signed by the party against whom such amendment or waiver is to be enforced.  

8.4Governing Law

This Agreement will be governed by the laws of the State of Delaware, without giving effect to the principles of conflict of laws.  With respect to any disputes arising out of or related to this Agreement, the parties consent to the jurisdiction of, and venue in, the state courts in Travis County in the State of Texas (or in the event of exclusive federal jurisdiction, the courts of the Western District of Texas).

8.5Successors and Assigns

The provisions of this Agreement shall inure to the benefit of and be binding upon the Company and its successors and assigns.  Except as otherwise expressly provided in this Agreement to the contrary, the provisions of this Agreement shall inure to the benefit of and be binding upon Purchaser and Purchaser’s successors and assigns.

8.6Counterparts

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This Agreement may be executed in counterparts, each of which shall be deemed to be an original, but all of which together shall constitute one instrument.

8.7Severability

If any provision of this Agreement is deemed void or unenforceable, such provision shall nevertheless be enforced to the fullest extent allowed by law, and the validity of the remainder of this Agreement shall not be affected.

8.8Further Assurances

At any time or from time to time after the date of this Agreement, the parties agree to cooperate with each other, and at the request of any other party, to execute and deliver any further instruments or documents and to take all such further action as the other party may reasonably request in order to carry out the intent of the parties hereunder.

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IN WITNESS WHEREOF, the parties have executed this Agreement as of the date first indicated above.

Company:

PLUS THERAPEUTICS, INC.

By:

Name:

Title:

Address:

PURCHASER:

NANOTX, CORP.

By:

Name:

Title:

Address:

Exhibit B

Amortization Table