X0508 4 2026-01-09 0 0001720893 BioXcel Therapeutics, Inc. BTAI 0001256126 MUELLER PETER C/O BIOXCEL THERAPEUTICS, INC. 555 LONG WHARF DRIVE, 12TH FLOOR NEW HAVEN CT 06511 1 0 0 0 0 Stock Option (Right to Buy) 2.01 2026-01-09 4 A 0 17000 0 A 2036-01-09 Common Stock 17000 17000 D The option shall vest and become exercisable on the earlier of the first anniversary of the date of grant or the day immediately prior to the date of the next annual meeting of the Issuer's stockholders occurring after the date of grant, in either case, subject to the Reporting Person's continuing in service as a non-employee director through such vesting date. /s/ Richard Steinhart, Attorney-in-Fact for Peter Mueller 2026-01-12