X0508 4 2026-03-14 0 0001720893 BioXcel Therapeutics, Inc. BTAI 0001293789 Steinhart Richard I C/O BIOXCEL THERAPEUTICS, INC. 555 LONG WHARF DRIVE, 12TH FLOOR NEW HAVEN CT 06511 0 1 0 0 Chief Financial Officer 0 Common Stock 2026-03-14 4 M 0 33 A 6610 D Common Stock 2026-03-15 4 M 0 35 A 6645 D Restricted Stock Units 2026-03-14 4 M 0 33 0 D Common Stock 33 97 D Restricted Stock Units 2026-03-15 4 M 0 35 0 D Common Stock 35 247 D Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock. On March 14, 2022, the Reporting Person was granted 521 RSUs, vesting as to 25% of the total number of RSUs on the first anniversary of March 14, 2022 and as to 6.25% of the total number of RSUs at the end of each successive three-month period thereafter, subject to the Reporting Person's continuous employment with the Issuer through the relevant vesting dates. On March 15, 2023, the Reporting Person was granted 562 RSUs, vesting as to 25% of the total number of RSUs on the first anniversary of March 15, 2023 and as to 6.25% of the total number of RSUs at the end of each successive three-month period thereafter, subject to the Reporting Person's continuous employment with the Issuer through the relevant vesting dates. /s/ Richard Steinhart 2026-03-16