144 0001820549 XXXXXXXX LIVE 0001595097 Corbus Pharmaceuticals Holdings, Inc. 001-37348 500 RIVER RIDGE DRIVE NORWOOD MA 02062 617-963-0103 Smethurst Dominic Officer Common Stock Stifel Nicolaus & Company Inc

501 N Broadway St. Louis MO 63102

23025 211818.00 18527795 07/27/2026 Nasdaq Common Stock 02/27/2025 Restricted Stock Units Issuer N 6107 02/27/2025 Equity Compensation Common Stock 01/31/2026 Restricted Stock Units Issuer N 3515 01/31/2026 Equity Compensation Common Stock 02/27/2026 Restricted Stock Units Issuer N 6403 02/27/2026 Equity Compensation Common Stock 06/30/2026 Restricted Stock Units Issuer N 7000 06/30/2026 Equity Compensation N Dominic Smethurst

500 RIVER RIDGE DRIVE NORWOOD MA 02062

Common Stock 07/02/2026 3334 31001.00 07/27/2026 /s/ James Weimer, as a duly authorized representative of STIFEL, as attorney-in-fact for Dominic Smethurst