X0202 SCHEDULE 13G 0001304857 XXXXXXXX LIVE Ordinary Shares 06/02/2026 0001541157 Akari Therapeutics, Plc. 00972G405 401 E. Jackson Street, Suite 3300 Tampa FL 33602 Rule 13d-1(c) MMCAP International Inc. SPC E9 0 8000000000 0 8000000000 8000000000 8.0 CO The Reporting Person owns 100,000 American Depository Shares (NASDAQ: AXTX) of the Issuer, each convertible into 80,000 Ordinary Shares, par value $0.000000005, of the Issuer MM Asset Management Inc. A6 0 8000000000 0 8000000000 8000000000 8.0 CO The Reporting Person owns 100,000 American Depository Shares (NASDAQ: AXTX) of the Issuer, each convertible into 80,000 Ordinary Shares, par value $0.000000005, of the Issuer Akari Therapeutics, Plc. 401 E. Jackson Street, Suite 3300, Tampa, FL 33602 i) MMCAP International Inc. SPC ii) MM Asset Management Inc. i) c/o Mourant Governance Services (Cayman) Limited, 94 Solaris Avenue, Camana Bay, P. O. Box 1348, Grand Cayman KY1-1108, Cayman Islands ii) 161 Bay Street, TD Canada Trust Tower, Suite 2240, Toronto, Ontario M5J 2S1 Canada i) Cayman Islands ii) Ontario, Canada Y 8,000,000,000 Represents 100,000 American Depository Shares, each convertible into 80,000 Ordinary Shares 8.0% Percent of class calculated on a partially-diluted basis using 91,567,009,533 Ordinary Shares, par value $0.000000005, outstanding as of March 31, 2026, as reported on the Issuer's 10-Q filed with the Securities and Exchange Commission on May 19, 2026. 0 8,000,000,000 0 8,000,000,000 Y Y Y Y Y N By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11. Exhibit 99.1 Joint Filing Agreement MMCAP International Inc. SPC Ulla Vestergaard 06/08/2026 MM Asset Management Inc. Hillel Meltz 06/08/2026