X0508 4 2026-02-19 0 0001400118 Sagimet Biosciences Inc. SGMT 0001623567 Happel David SAGIMET BIOSCIENCES INC. 155 BOVET ROAD, SUITE 303 SAN MATEO CA 94402 1 1 0 0 President & CEO 0 Series A Common Stock 2026-02-19 4 A 0 128000 0.00 A 805621 D Stock Option (Right to Buy) 5.38 2026-02-19 4 A 0 256000 0 A 2036-02-18 Series A Common Stock 256000 256000 D Represents restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's Series A Common Stock upon vesting and settlement. The RSUs shall vest over four equal annual installments following February 19, 2026, subject to the Reporting Person's continued service on each such vesting date. The shares underlying this option shall vest and become exercisable over forty-eight equal monthly installments following February 19, 2026, subject to the Reporting Person's continued service on each such vesting date. /s/ Elizabeth Rozek, Attorney-in-Fact 2026-02-20