Chaitan Khosla PhD - 13 Mar 2024 Form 4 Insider Report for First Wave BioPharma, Inc. (ENTO)

Footnote F1

On March 13, 2024, the Issuer acquired ImmunogenX, Inc. ("ImmunogenX") in accordance with the terms of the Agreement and Plan of Merger (the "Merger Agreement"), dated March 13, 2024, by and among the Issuer, IMMUNO Merger Sub I, Inc., IMMUNO Merger Sub II, LLC, and ImmunogenX (the "Merger"). The shares of common stock, par value $0.0001 per share (the "Common Stock"), of the Issuer and the shares of Series G Preferred Stock, par value $0.0001 per share (the "Preferred Stock") of the Issuer were received by the Reporting Person in the Merger in exchange for an aggregate of 34,159 shares of preferred stock, par value $0.0001 per share, of ImmunogenX.

Footnote F2

Held directly by the Chaitan Khosla Living Trust, in which the Reporting Person serves as the sole Trustee. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these shares in this report shall not be deemed an admission of beneficial ownership of all of the reported shares for purposes of Section 16 or for any other purpose.

Footnote F3

The shares of Preferred Stock will automatically convert into shares of Common Stock at a ratio of 1-for-1,000 on the third business day after the date that the Issuer's stockholders approve the conversion of the Preferred Stock into shares of Common Stock, subject to certain beneficial ownership limitations. The Preferred Stock contains a conversion limitation prohibiting the Reporting Person from converting the Preferred Stock until such time as the Reporting Person would not beneficially own after such conversion more than 19.9% of the then issued and outstanding Common Stock. The blocker percentage may be decreased to 4.9% or otherwise adjusted by the Reporting Person upon 61 days' notice to the Issuer.

Footnote F4

The Preferred Stock is perpetual and therefore has no expiration date.

Footnote F5

The option was fully vested at the effective time of the Merger (the "Effective Time").

Footnote F6

Pursuant to the terms of the Merger Agreement, the option to acquire 20,000 shares of common stock, par value $0.0001 per share, of ImmunogenX (the "Original Amount") at an exercise price of $2.14 per share (the "Original Exercise Price") that was originally granted on February 1, 2021 under the ImmunogenX 2021 Stock Option Plan was assumed by the Issuer and converted into an option to purchase a number of shares of Common Stock of the Issuer equal to the Original Amount multiplied by 2.649 (the "Exchange Ratio") at an exercise price equal to the Original Exercise Price divided by the Exchange Ratio. The option will continue to be governed by the same terms and conditions as were applicable to such option immediately prior to the Effective Time.