X0202 SCHEDULE 13G/A 0000919574-26-001080 0001169253 XXXXXXXX LIVE 1 Common Stock, no par value 03/31/2026 0001655923 Alpha Cognition Inc. 02074J501 1452 Hughes Street, Ste. 200 Grapevine TX 76051 Rule 13d-1(c) Manchester Management Company, LLC b DE 0.00 919935.00 0.00 919935.00 919935.00 N 4.2 OO Manchester Management PR, LLC b PR 0.00 919935.00 0.00 919935.00 919935.00 N 4.2 OO James E. Besser b X1 157000.00 919935.00 157000.00 919935.00 1076935.00 N 4.9 IN Morgan C. Frank b X1 45000.00 843935.00 45000.00 843935.00 888935.00 N 4.0 IN Alpha Cognition Inc. 1452 Hughes Street, Ste. 200, Grapevine, Texas, 76051, United States of America Manchester Management Company, LLC Manchester Management PR, LLC James E. Besser Morgan C. Frank Manchester Management Company, LLC 2 Calle Candina, #1701 San Juan, Puerto Rico, 00907 United States of America Manchester Management PR, LLC 2 Calle Candina, #1701 San Juan, Puerto Rico, 00907 United States of America James E. Besser c/o Manchester Management Company, LLC 2 Calle Candina, #1701 San Juan, Puerto Rico, 00907 United States of America Morgan C. Frank c/o Manchester Management Company, LLC 2 Calle Candina, #1701 San Juan, Puerto Rico, 00907 United States of America Manchester Management Company, LLC - Delaware Manchester Management PR, LLC - Other - Puerto Rico James E. Besser - United States Morgan C. Frank - United States Y Manchester Management Company, LLC - 919,935 Manchester Management PR, LLC - 919,935 James E. Besser - 1,076,935 Morgan C. Frank - 888,935 Manchester Management Company, LLC - 4.2% Manchester Management PR, LLC - 4.2% James E. Besser - 4.9% Morgan C. Frank - 4.0% Manchester Management Company, LLC - 0 Manchester Management PR, LLC - 0 James E. Besser - 157,000 Morgan C. Frank - 45,000 Manchester Management Company, LLC - 919,935 Manchester Management PR, LLC - 919,935 James E. Besser - 919,935 Morgan C. Frank - 843,935 Manchester Management Company, LLC - 0 Manchester Management PR, LLC - 0 James E. Besser - 157,000 Morgan C. Frank - 45,000 Manchester Management Company, LLC - 919,935 Manchester Management PR, LLC - 919,935 James E. Besser - 919,935 Morgan C. Frank - 843,935 N Y N All of the securities reported in this Schedule 13G Amendment No. 1 are directly owned by advisory clients of Manchester Management PR, LLC. None of those advisory clients may be deemed to beneficially own more than 5% of the Common Stock, no par value. 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 A - Joint Filing Agreement Manchester Management Company, LLC /s/ James E. Besser 05/12/2026 Manchester Management PR, LLC /s/ James E. Besser 05/12/2026 James E. Besser /s/ James E. Besser 05/12/2026 Morgan C. Frank /s/ Morgan C. Frank 05/12/2026