Power of Attorney for Cocrystal Pharma, Inc. Officer

This filing is an Exhibit 24, a Power of Attorney document for James Sapirstein, Chief Executive Officer of Cocrystal Pharma, Inc. (COCP). Sapirstein appoints James Martin and Michael D. Harris as his attorneys-in-fact. This grants them the authority to prepare and execute Forms 3, 4, and 5 for Sapirstein in accordance with Section 16(a) of the Securities Exchange Act of 1934, as well as any other required ownership or disposition reports. The attorneys-in-fact are also empowered to prepare and file Form 144 filings under the Securities Act of 1933. They can perform any necessary actions to complete and file these forms with the SEC and any stock exchanges. This Power of Attorney remains in effect until Sapirstein is no longer required to file reports under Section 16(a) or until earlier revoked in writing. The document was signed on June 3, 2026.