Big Rock Partners Acquisition Corp. Contracts & Agreements

Amendment to Convertible Promissory Note, dated June 30, 2023, by and between NRx Pharmaceuticals, Inc. and Streetervillle Capital LLC (Filed With SEC on November 14, 2023)

Client Agreement, dated August 31, 2023, by and between NRx Pharmaceuticals, Inc. and LS Associates, a division of LifeSci Advisors, LLC Associates (Filed With SEC on September 14, 2023)

Form of Securities Purchase Agreement (Filed With SEC on September 1, 2023)

Form of Investor Warrant (Filed With SEC on September 1, 2023)

Amendment to Convertible Promissory Note, dated June 30, 2023, by and between NRx Pharmaceuticals, Inc. and Streetervillle Capital LLC (Filed With SEC on August 14, 2023)

At The Market Offering Agreement, dated August 14, 2023, by and between the Company and H.C. Wainwright & Co., LLC (Filed With SEC on August 14, 2023)

Second Amendment to Convertible Promissory Note, dated July 7, 2023, by and between NRx Pharmaceuticals, Inc. and Streetervillle Capital LLC (Filed With SEC on July 28, 2023)

Form of Investor Warrant (Filed With SEC on June 7, 2023)

Form of Warrant Amendment Agreement (Filed With SEC on June 7, 2023)

Form of Securities Purchase Agreement (Filed With SEC on June 7, 2023)

Lock-Up Agreement (Filed With SEC on June 7, 2023)

Form of Investor Warrant (Filed With SEC on June 6, 2023)

Form of Warrant Amendment Agreement (Filed With SEC on June 6, 2023)

Form of Securities Purchase Agreement (Filed With SEC on June 6, 2023)

Lock-Up Agreement (Filed With SEC on June 6, 2023)

Development and License Agreement, dated as of June 2, 2023, by and among the Company and Alvogen (Filed With SEC on June 5, 2023)

Amendment to Convertible Promissory Note, dated March 30, 2023, by and between NRx Pharmaceuticals, Inc. and Streetervillle Capital LLC (Filed With SEC on May 15, 2023)

Amendment to Consulting Agreement, dated March 29, 2023, by and between the Company and Dr. Jonathan Javitt (Filed With SEC on March 31, 2023)

Form of Securities Purchase Agreement (Filed With SEC on March 14, 2023)

Form of Investor Warrant (Filed With SEC on March 14, 2023)

Form of Securities Purchase Agreement (Filed With SEC on March 9, 2023)

Form of Investor Warrant (Filed With SEC on March 9, 2023)

Executive Employment Agreement, dated July 12, 2022, between NRx Pharmaceuticals, Inc. and Stephen Willard (Filed With SEC on November 14, 2022)

Form of Guarantee (Filed With SEC on November 9, 2022)

Form of Note (Filed With SEC on November 9, 2022)

Form of Securities Purchase Agreement, dated as of November 4, 2022, by and between the Company and Streeterville (Filed With SEC on November 9, 2022)

Executive Employment Agreement, dated [June 13], 2022, between NRx Pharmaceuticals, Inc. and Seth Van Voorhees (Filed With SEC on August 15, 2022)

Executive Employment Agreement, dated March 15, 2022, between NRx Pharmaceuticals, Inc. and Ira Strassberg (Filed With SEC on May 16, 2022)

Pill Tracker Supplemental Task Order, dated November 15, 2021 (Filed With SEC on March 31, 2022)

Consulting Agreement by and between NRx Pharmaceuticals, Inc. and Jonathan C. Javitt, dated as of March 8, 2022 (Filed With SEC on March 9, 2022)

Letter Agreement by and between NeuroRx, Inc. and REBes Consulting LLC- Robert Besthof, dated as of March 9, 2022 (Filed With SEC on March 9, 2022)

Form of Placement Agent Preferred Investment Option, dated as of February 2, 2022 by and among the Company and H.C. Wainwright & Co., LLC (Filed With SEC on February 3, 2022)

Form of Registration Rights Agreement, dated as of January 30, 2022, by and among the Company and the Purchasers (Filed With SEC on February 3, 2022)

Form of Preferred Investment Options, dated as of February 2, 2022, by and among the Company and the holders (Filed With SEC on February 3, 2022)

Form of Securities Purchase Agreement, dated as of January 30, 2022, by and among the Company and the Purchasers (Filed With SEC on February 3, 2022)

Statement of Work, dated July 26, 2021, between Pilltracker Ltd. and NeuroRx, Inc (Filed With SEC on November 15, 2021)

Form of Lock-Up Agreement, dated as of August 19, 2021, by and among the Company, Jonathan Javitt and Daniel Javitt (Filed With SEC on August 24, 2021)

Form of Registration Rights Agreement, dated as of August 19, 2021, by and among the Company and the Purchasers (Filed With SEC on August 24, 2021)

Form of Preferred Investment Options, dated as of August 23, 2021, by and among the Company and the Purchasers (Filed With SEC on August 24, 2021)

Form of Securities Purchase Agreement, dated as of August 19, 2021, by and among the Company and the Purchasers (Filed With SEC on August 24, 2021)

Sponsor Agreement, dated May 24, 2021, by and among BRPA, the Big Rock Partners Sponsor, LLC, and BRAC Lending Group LLC (Filed With SEC on May 28, 2021)

Consulting Agreement with Randolph Guggenheimer III (Filed With SEC on May 28, 2021)

Registration Rights Agreement, dated May 24, 2021, by and among NRX Pharmaceuticals, Inc., certain equityholders of the Registrant named therein and certain equityholders of... (Filed With SEC on May 28, 2021)

Lock-up Agreement, dated May 24, 2021, by and between BRPA and the stockholder parties identified therein (Filed With SEC on May 28, 2021)

Amendment to the Stock Escrow Agreement, dated May 24, 2021, among BRPA, Continental Stock Transfer & Trust Company, and the stockholder parties thereto (Filed With SEC on May 28, 2021)

VOTING AGREEMENT (Filed With SEC on May 28, 2021)

Amendment to the Stock Escrow Agreement, dated May 24, 2021, among BRPA, Continental Stock Transfer & Trust Company, and the stockholder parties thereto (Filed With SEC on May 28, 2021)

Lock-up Agreement, dated May 24, 2021, by and between BRPA and the stockholder parties identified therein (Filed With SEC on May 28, 2021)

Registration Rights Agreement, dated May 24, 2021, by and among NRX Pharmaceuticals, Inc., certain equityholders of the Registrant named therein and certain equityholders of... (Filed With SEC on May 28, 2021)

VOTING AGREEMENT (Filed With SEC on May 28, 2021)

Sponsor Agreement, dated May 24, 2021, by and among BRPA, the Big Rock Partners Sponsor, LLC, and BRAC Lending Group LLC (Filed With SEC on May 28, 2021)

Description of Registrant's Securities (Filed With SEC on April 1, 2021)

First Amendment to Agreement and Plan of Merger, dated as of January 27, 2021, by and among Big Rock Partners Acquisition Corp., NeuroRx, Inc., and Big Rock Merger Corp (Filed With SEC on April 1, 2021)

Second Amendment to Agreement and Plan of Merger, dated as of March 19, 2021, by and among Big Rock Partners Acquisition Corp., NeuroRx, Inc., and Big Rock Merger Corp (Filed With SEC on March 22, 2021)

Form of Subscription Agreement (Filed With SEC on March 15, 2021)

Merger Agreement, dated as of December 13, 2020, by and among Big Rock Partners Acquisition Corp., NeuroRx, Inc., and Big Rock Merger Corp (Filed With SEC on December 17, 2020)

Description of Registrant's Securities (Filed With SEC on March 30, 2020)

Promissory Note in favor of A/Z Property Partners, LLC, dated December 31, 2019 (Filed With SEC on March 30, 2020)

Promissory Note in favor of BRAC Lending Group LLC , dated February 21, 2019 (Filed With SEC on February 22, 2019)

Agreement, dated November 17, 2018, among the Company, Big Rock Partners Sponsor, LLC and BRAC Lending Group LLC (Filed With SEC on November 20, 2018)

Stock Escrow Agent Letter, dated November 17, 2018 (Filed With SEC on November 20, 2018)

Registration Rights Assignment Agreement, dated November 17, 2018 (Filed With SEC on November 20, 2018)

Insider Letter, dated November 17, 2018 (Filed With SEC on November 20, 2018)

Promissory Note in favor of BRAC Lending Group LLC , dated November 20, 2018 (Filed With SEC on November 20, 2018)

Letter Agreement, dated November 20, 2017, by and between the Company and A/Z Property Partners, LLC (Filed With SEC on November 22, 2017)

Administrative Services Agreement, dated November 20, 2017, between the Company and Big Rock Partners Sponsor, LLC (Filed With SEC on November 22, 2017)

Letter Agreement, dated November 20, 2017, by and between the Company and Big Rock Partners Sponsor, LLC (Filed With SEC on November 22, 2017)

Registration Rights Agreement among the Company andBig Rock Partners Sponsor, LLC (Filed With SEC on November 22, 2017)

Stock Escrow Agreement, dated November 20, 2017, between the Company, Big Rock Partners Sponsor, LLC and Continental Stock Transfer & Trust Company (Filed With SEC on November 22, 2017)

Investment Management Trust Account Agreement, dated November 20, 2017, between Continental Stock Transfer & Trust Company and the Company (Filed With SEC on November 22, 2017)

Form of Unit Purchase Option, dated November 20, 2017, with EarlyBirdCapital, Inc. and its designees (Filed With SEC on November 22, 2017)

Warrant Agreement, dated November 20, 2017, between Continental Stock Transfer & Trust Company and the Company (Filed With SEC on November 22, 2017)

Right Agreement, dated November 20, 2017, between the Company and Continental Stock Transfer & Trust Company (Filed With SEC on November 22, 2017)

Letter Agreement, dated November 20, 2017, between the Company and EarlyBirdCapital, Inc (Filed With SEC on November 22, 2017)

Underwriting Agreement, dated November 20, 2017, between the Company and EarlyBirdCapital, Inc (Filed With SEC on November 22, 2017)

Form of Letter, dated November 20, 2017, Agreement by and between the Company and its officers and directors (Filed With SEC on November 22, 2017)

Form of Indemnification Agreement, dated November 20, 2017, with the Companys officers and directors (Filed With SEC on November 22, 2017)

Securities Subscription Agreement, dated November 20, 2017, between the Company and Big Rock Partners Sponsor, LLC (Filed With SEC on November 22, 2017)

Form of Unit Purchase Option (Filed With SEC on November 14, 2017)

Form of Underwriting Agreement (Filed With SEC on November 14, 2017)

Letter Agreement between the Registrant and EarlyBirdCapital (Filed With SEC on November 14, 2017)

Specimen Unit Certificate (Filed With SEC on November 14, 2017)

Specimen Common Stock Certificate (Filed With SEC on November 14, 2017)

Specimen Right Certificate (Filed With SEC on November 14, 2017)

Specimen Warrant Certificate (Filed With SEC on November 14, 2017)

Form of Right Agreement between Continental Stock Transfer & Trust Company and Registrant (Filed With SEC on November 14, 2017)

Form of Warrant Agreement between Continental Stock Transfer & Trust Company and the Registrant (Filed With SEC on November 14, 2017)

Form of Registration Rights Agreement among the Registrant and the Initial Stockholder (Filed With SEC on November 14, 2017)

Form of Letter Agreement for the Registrants sponsor (Filed With SEC on November 14, 2017)

Form of Letter Agreement for each of the Registrants other officers and directors (Filed With SEC on November 14, 2017)

Form of Letter Agreement for A/Z Property Partners, LLC (Filed With SEC on November 14, 2017)

Form of Investment Management Trust Agreement between Continental Stock Transfer & Trust Company and the Registrant (Filed With SEC on November 14, 2017)

Form of Stock Escrow Agreement between the Registrant, Continental Stock Transfer & Trust Company and the Initial Stockholder (Filed With SEC on November 14, 2017)

Promissory Note, dated as of September 26, 2017, in favor of Big Rock Partners Sponsor, LLC (Filed With SEC on November 14, 2017)

Promissory Note, dated as of September 26, 2017, in favor of Richard Ackerman (Filed With SEC on November 14, 2017)

Securities Subscription Agreement, dated September 26, 2017, between the Registrant and Big Rock Partners Sponsor, LLC (Filed With SEC on November 14, 2017)

Form of Administrative Services Agreement (Filed With SEC on November 14, 2017)

Big Rock Partners Acquisition Corp. 2645 N. Federal Highway Suite 230 Delray Beach, Florida 33483 _____, 2017 (Filed With SEC on November 14, 2017)