UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

CORBUS PHARMACEUTICALS HOLDINGS, INC.

(Exact name of Registrant as Specified in Its Charter)

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

On March 20, 2025, Dr. Peter Salzmann advised the Board of Directors (the “Board”) of Corbus Pharmaceuticals Holdings, Inc. (the “Company”) that he will not stand for re-election as a director of the Company at the 2025 annual meeting of stockholders (the “2025 Annual Meeting”). Dr. Salzmann currently serves as a member of the Nominating and Corporate Governance Committee of the Board and will continue to serve on the Board and maintain his committee position through the 2025 Annual Meeting. Dr. Salzmann’s decision not to stand for re-election was not the result of any disagreement with the Company on any matter related to the Company’s operations, policies, or practices.

In connection with Dr. Salzmann’s decision, the Board approved a reduction in the size of the Board from eight members to seven members, with such reduction effective as of the 2025 Annual Meeting.

The Company expresses its sincere thanks to Dr. Salzmann for his service on the Board and his many valuable contributions to the Company.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.