SCHEDULE 13G/A 0001535264 XXXXXXXX LIVE 1 Common Stock 12/31/2025 0001655923 Alpha Cognition Inc. 02074J501 1452 HUGHES RD., STE. 200 GRAPEVINE TX 76051 Rule 13d-1(b) AWM Investment Company, Inc. DE 2172036.00 0.00 2172036.00 0.00 2172036.00 9.9 IA AWM Investment Company, Inc., a Delaware Corporation (AWM), is the investment adviser to Special Situations Cayman Fund, L.P.(CAYMAN), Special Situations Fund III QP, L.P. (SSFQP), Special Situations Private Equity Fund, L.P.(SSPE) and Special Situations Life Sciences Fund, L.P. (SSLS). As the investment adviser to the Funds, AWM holds sole voting and investment power over 1,672,168 Common Shares and 948,484 pre-funded Warrants: 244,657 shares of Common Stock and 153,063 (pre-funded) Warrants held by CAYMAN, 873,773 shares of Common Stock and 542,491 (pre-funded) Warrants held by SSFQP, 76,869 shares of Common Stock and 126,465 (pre-funded) Warrants held by SSPE and 476,869 shares of Common Stock and 126,465 (pre-funded) Warrants held by SSLS. Warrants described herein may only be converted or exercised into Common Shares to the extent that the total number of Common Shares then beneficially owned does not exceed 9.99% of the outstanding shares. The number of shares beneficially owned is calculated using 9.99% of the outstanding shares. Alpha Cognition Inc. 1452 HUGHES RD., STE. 200, GRAPEVINE, TEXAS, 76051 The person filing this report is AWM Investment Company, Inc., a Delaware corporation (AWM), which is the investment adviser to Special Situations Cayman Fund, L.P., a Cayman Islands Limited Partnership (CAYMAN), Special Situations Fund III QP, L.P., a Delaware limited partnership (SSFQP), Special Situations Private Equity Fund, L.P., a Delaware limited partnership (SSPE) and Special Situations Life Sciences Fund, L.P., a Delaware limited partnership (SSLS). The principal business of each Fund is to invest in equity and equity-related securities and other securities of any kind or nature. David M. Greenhouse (Greenhouse) and Adam C. Stettner (Stettner) are members of: SSCayman, L.L.C., a Delaware limited liability company (SSCAY), the general partner of CAYMAN; MGP Advisers Limited Partnership, a Delaware limited partnership (MGP), the general partner of SSFQP; MG Advisers, L.L.C., a New York limited liability company (MG), the general partner of SSPE and LS Advisers, L.L.C., a New York limited liability company (LS). Greenhouse and Stettner are also controlling principals of AWM. 527 Madison Avenue, Suite 2600 New York, NY 10022 AWM is a Delaware Corporation Y 2,172,036 9.9 AWM Investment Company, Inc., a Delaware Corporation (AWM), is the investment adviser to Special Situations Cayman Fund, L.P., Special Situations Fund III QP, L.P., Special Situations Private Equity Fund, L.P. and Special Situations Life Sciences Fund, L.P. As the investment adviser to the Funds, AWM holds sole voting power over 244,657 shares of Common Stock and 153,063 (pre-funded) Warrants held by CAYMAN, 873,773 shares of Common Stock and 542,491 (pre-funded) Warrants held by SSFQP, 76,869 shares of Common Stock and 126,465 (pre-funded) Warrants held by SSPE and 476,869 shares of Common Stock and 126,465 (pre-funded) Warrants held by SSLS. *** Warrants described herein may only be converted or exercised into Common Shares to the extent that the total number of Common Shares then beneficially owned does not exceed 9.99% of the outstanding shares. 0 AWM Investment Company, Inc., a Delaware Corporation (AWM), is the investment adviser to Special Situations Cayman Fund, L.P., Special Situations Fund III QP, L.P., Special Situations Private Equity Fund, L.P. and Special Situations Life Sciences Fund, L.P. As the investment adviser to the Funds, AWM holds sole investment power over 244,657 shares of Common Stock and 153,063 (pre-funded) Warrants held by CAYMAN, 873,773 shares of Common Stock and 542,491 (pre-funded) Warrants held by SSFQP, 76,869 shares of Common Stock and 126,465 (pre-funded) Warrants held by SSPE and 476,869 shares of Common Stock and 126,465 (pre-funded) Warrants held by SSLS. *** Warrants described herein may only be converted or exercised into Common Shares to the extent that the total number of Common Shares then beneficially owned does not exceed 9.99% of the outstanding shares. 0 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 acquired and are held in the ordinary course of business and 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. AWM Investment Company, Inc. Adam Stettner 02/13/2026