X0609 4 2026-09-14 0001595097 Corbus Pharmaceuticals Holdings, Inc. CRBP 0001967669 Ben Yong false C/O CORBUS PHARMACEUTICALS HOLDINGS, INC 500 RIVER RIDGE DRIVE NORWOOD MA 02062 true false false false true Common Stock, par value $0.0001 per share 2026-09-14 4 S false 2000 7.8415 D 9383 D This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 12, 2026. The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.80 to $7.90. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. This amount includes 3,800 unvested RSUs subject to each grant's vesting schedule as previously reported. /s/ Meghan Houghton, attorney-in-fact for Yong Ben 2026-09-15