UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K/A

(Amendment No. 1)

(Mark One)

For the fiscal year ended December 31, 2023

OR

Commission File Number 001-37348

Corbus Pharmaceuticals Holdings, Inc.

(Exact name of Registrant as specified in its Charter)

Registrant’s telephone number, including area code: (617) 963-0100

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

Securities registered pursuant to Section 12(g) of the Act: None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes ☐ No ☒

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes ☐ No ☒

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒ No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☒ No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

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. ☐

Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report. ☐

If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the correction of an error to previously issued financial statements. ☐

Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the registrant’s executive officers during the relevant recovery period pursuant to §240.10D-1(b). ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act). Yes ☐ No ☒

As of June 30, 2023, the last business day of the registrant’s most recently completed second fiscal quarter, the aggregate market value of the common stock held by non-affiliates of the registrant was approximately $34,571,068, based on the closing price of the registrant’s common stock on June 30, 2023.

As of March 8, 2024, the number of shares outstanding of the registrant’s common stock, $0.0001 par value per share, was 10,493,108.

Documents incorporated by reference

EXPLANATORY NOTE

Corbus Pharmaceuticals Holdings, Inc. (the “Company”) is filing this Amendment No. 1 (this “Amendment No. 1”) to the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2023 (the “Original Form 10-K”), filed with the Securities and Exchange Commission (the “SEC”) on March 12, 2024, only for the purpose of amending and restating Item 11 of Part III of the Original Form 10-K to include certain information which was inadvertently omitted in the Original Form 10-K.

TABLE OF CONTENTS

PART III

Item 11. EXECUTIVE COMPENSATION

Executive Compensation

Our named executive officers for the year ended December 31, 2023 were Yuval Cohen, Ph.D., Director and Chief Executive Officer; Sean Moran, CPA, Chief Financial Officer and Rachael Brake, Ph.D. former Chief Scientific Officer.

Summary Compensation Table

The following table presents information regarding the total compensation awarded to, earned by, or paid to our chief executive officer and the two most highly-compensated executive officers (other than the chief executive officer) who were serving as executive officers as of December 31, 2023 and December 31, 2022 for services rendered in all capacities to us for the year ended December 31, 2023 and December 31, 2022. These individuals are our named executive officers for 2023.

Narrative Disclosure to Summary Compensation Table Employment Agreements

Yuval Cohen

We entered an employment agreement with Dr. Cohen which became effective April 11, 2020 (the “2020 Cohen Agreement”). The 2020 Cohen Agreement was effective for a period of two years. The 2020 Cohen Agreement provides for Dr. Cohen to serve as Chief Executive Officer and provides for an annual base salary of $559,000. In addition, pursuant to the 2020 Cohen Agreement, Dr. Cohen will be eligible to receive an annual bonus, which is targeted at up to 60% of his base salary but which may be adjusted by the Board based on his individual performance and the Company’s performance as a whole. Pursuant to the terms of the 2020 Cohen Agreement, Dr. Cohen will be eligible to receive, from time to time, equity awards under the Company’s existing equity incentive plan, or any other equity incentive plan the Company may adopt in the future, and the amounts of such awards, if any, will be determined by the Board or Compensation Committee, in their discretion. Dr. Cohen will be subject to non-compete provisions, which apply during the term of his employment and for a period of six months from the date of cessation of his employment, subject to the Company providing as severance ((x) if the Company terminates Dr. Cohen’s employment without cause or he terminates his employment for good reason during the term of the 2020 Cohen Agreement and (y) Dr. Cohen timely executes and does not revoke a general release, which will include a non-compete covenant, and complies with covenants) twelve months of his base salary, other than during the Change in Control Period (as defined below), in which case it will be increased to twenty-four (24) months. Dr. Cohen will be subject to non-solicitation provisions, which apply during the term of his employment and for a period of twelve months from the date of cessation of his employment. In addition, the 2020 Cohen Agreement contains customary confidentiality and assignment of inventions provisions. If the Company terminates Dr. Cohen’s employment without cause or he terminates his employment for good reason during the term of the 2020 Cohen Agreement, other than during the Change in Control Period, the Company will be required to provide as severance reimbursement of the cost of COBRA coverage (or to use commercially reasonable best efforts to provide the cost of other comparable coverage if COBRA reimbursement would incur tax penalties or violate the law) for twelve months, and he may be paid a pro-rated bonus, each subject to his timely execution and non-revocation of a general release, which will include a non-compete covenant, and continuing compliance with covenants. If the Company terminates Dr. Cohen’s employment without cause or he terminates his employment for good reason during the term of the 2020 Cohen Agreement, and within the three months immediately prior to a change in control or the twelve months immediately following a change in control (the “Change in Control Period”), the Company will be required to provide as severance reimbursement of the cost of COBRA coverage (or to use commercially reasonable best efforts to provide the cost of other comparable coverage if COBRA reimbursement would incur tax penalties or violate the law) for twenty-four (24) months, accelerated vesting of all of his outstanding options, restricted stock and other equity incentive awards and his current year bonus at two (2) times target levels, each subject to his timely execution and non-revocation of a general release which will include a non-compete covenant, and continuing compliance with covenants. Dr. Cohen’s severance payments and other applicable payments and benefits will be subject to reduction to the extent doing so would put him in a better after-tax position after taking into account any excise tax he may incur under Internal Revenue Code Section 4999 in connection with any change in control of us or his subsequent termination of employment. The 2020 Cohen Agreement expired on April 11, 2022.

Effective April 11, 2022, we entered into a fourth amended and restated employment agreement with Dr. Cohen, which is effective for a period of two years. Dr. Cohen’s employment agreement provides for him to serve as Chief Executive Officer and provides for an annual base salary of $598,850. In addition, Dr. Cohen is eligible to receive an annual bonus, which is targeted at up to 60% of his base salary but which may be adjusted by our Board based on his individual performance and our performance as a whole. Pursuant to the terms of the employment agreement, Dr. Cohen is eligible to receive, from time to time, equity awards under our existing equity incentive plan, or any other equity incentive plan we may adopt in the future, and the terms and conditions of such awards, if any, will be determined by our Board or Compensation Committee, in their discretion. Dr. Cohen is subject to non-compete provisions, which apply during the term of his employment and for a period of six months from the date of cessation of his employment, subject to the Company providing as severance ((x) if we terminate Dr. Cohen’s employment without cause or he terminates his employment for good reason during the term of his employment agreement and (y) Dr. Cohen timely executes and does not revoke a general release, which will include a non-compete covenant, and complies with such covenants) twelve months of his base salary, other than during the Change in Control Period (as defined below), in which case it will be increased to twenty-four (24) months. Dr. Cohen will be subject to non-solicitation provisions, which apply during the term of his employment and for a period of twelve months from the date of cessation of his employment. In addition, the employment agreement contains customary confidentiality and assignment of inventions provisions. If we terminate Dr. Cohen’s employment without cause or he terminates his employment for good reason during the term of his employment agreement, other than during the Change in Control Period, we are required to pay him as severance reimbursement of the cost of COBRA coverage (or to use commercially reasonable best efforts to provide the cost of other comparable coverage if COBRA reimbursement would incur tax penalties or violate the law) for twelve months, and he may be paid a pro-rated bonus, each subject to his timely execution of a general release, which will include a non-compete covenant, and continuing compliance with such covenants. If we terminate Dr. Cohen’s employment without cause or he terminates his employment for good reason during the term of the employment agreement, and within the three months immediately prior to a change in control or the twelve months immediately following a

change in control (the “Change in Control Period”), we are required to provide as severance reimbursement of the cost of COBRA coverage (or to use commercially reasonable best efforts to provide the cost of other comparable coverage if COBRA reimbursement would incur tax penalties or violate the law) for twenty-four (24) months, accelerated vesting of all of his outstanding options, restricted stock and other equity incentive awards and his current year bonus at two (2) times target levels, each subject to his timely execution and non-revocation of a general release which will include a non-compete covenant, and continuing compliance with such covenants. Dr. Cohen’s severance payments and other applicable payments and benefits will be subject to reduction to the extent doing so would put him in a better after-tax position after taking into account any excise tax he may incur under Internal Revenue Code Section 4999 in connection with any change in control of the Company or his subsequent termination of employment. Dr. Cohen’s employment agreement expires on April 11, 2024.

Sean Moran

We entered an employment agreement with Mr. Moran which became effective April 11, 2020 (the “2020 Moran Agreement”). The 2020 Moran Agreement was effective for a period of two years. The 2020 Moran Agreement provides for Mr. Moran to serve as Chief Financial Officer and provides for an annual base salary of $400,000. In addition, pursuant to the 2020 Moran Agreement, Mr. Moran will be eligible to receive an annual bonus, which is targeted at up to 40% of his base salary but which may be adjusted by the Board based on his individual performance and the Company’s performance as a whole. Pursuant to the terms of the 2020 Moran Agreement, Mr. Moran will be eligible to receive, from time to time, equity awards under the Company’s existing equity incentive plan, or any other equity incentive plan the Company may adopt in the future, and the payments of such awards, if any, will be determined by the Board or Compensation Committee, in their discretion. Mr. Moran is subject to non-compete provisions, which apply during the term of his employment and for a period of six months from the date of cessation of his employment, subject to the Company providing as severance ((x) if the Company terminates Mr. Moran’s employment without cause or he terminates his employment for good reason during the term of the 2020 Moran Agreement and (y) he timely executes and does not revoke a general release, which will include a non-compete covenant, and complies with covenants.) twelve months of his base salary, other than during the Change in Control Period (as defined below), in which case it will be increased to eighteen (18) months. Mr. Moran will be subject to non-solicitation provisions, which apply during the term of his employment and for a period of twelve months from the date of cessation of his employment. In addition, the 2020 Moran Agreement contains customary confidentiality and assignment of inventions provisions. If the Company terminates Mr. Moran’s employment without cause or he terminates his employment for good reason during the term of the 2020 Moran Agreement, other than during the Change in Control Period, the Company will be required to pay him as severance reimbursement of the cost of COBRA (or to use commercially reasonable best efforts to provide the cost of other comparable coverage if COBRA reimbursement would incur tax penalties or violate the law) for twelve months, and he may be paid a pro-rated bonus, each subject to his timely execution and non-revocation of a general release, which will include a non-compete covenant, and continuing compliance with covenants. If the Company terminates Mr. Moran’s employment without cause or he terminates his employment for good reason during the term of the 2020 Moran Agreement, and during the Change in Control Period, the Company will be required to pay him as severance reimbursement of the cost of COBRA coverage (or to use commercially reasonable best efforts to provide the cost of other comparable coverage if COBRA reimbursement would incur tax penalties or violate the law) for eighteen (18) months, accelerated vesting of all of his outstanding options, restricted stock and other equity incentive awards and his current year bonus at target levels, each subject to his timely execution and non-revocation of a general release, which will include a non-compete covenant, and continuing compliance with covenants. Mr. Moran’s severance payments and other applicable payments and benefits will be subject to reduction to the extent doing so would put him in a better after-tax position after taking into account any excise tax he may incur under Internal Revenue Code Section 4999 in connection with any change in control of the Company or his subsequent termination of employment. The 2020 Moran Agreement expired on April 11, 2022.

Effective April 11, 2022, we entered into a fifth amended and restated employment agreement with Mr. Moran, which is effective for a period of two years. Mr. Moran’s employment agreement provides for him to serve as Chief Financial Officer and provides for an annual base salary of $428,490. In addition, Mr. Moran is eligible to receive an annual bonus, which is targeted at up to 40% of his base salary but which may be adjusted by our Board based on his individual performance and our performance as a whole. Pursuant to the terms of the employment agreement, Mr. Moran is eligible to receive, from time to time, equity awards under our existing equity incentive plan, or any other equity incentive plan we may adopt in the future, and the terms and conditions of such awards, if any, will be determined by our Board or Compensation Committee, in their discretion. Mr. Moran is subject to non-compete provisions, which apply during the term of his employment and for a period of six months from the date of cessation of his employment, subject to the Company providing as severance ((x) if we terminate Mr. Moran’s employment without cause or he terminates his employment for good reason during the term of the employment agreement and (y) he timely executes and does not revoke a general release, which will include a non-compete covenant, and complies with such covenants) twelve months of his base salary, other than during the Change in Control Period, in which case it will be increased to eighteen (18) months. Mr. Moran will be subject to non-solicitation provisions, which apply during the term of his employment and for a period of twelve months from the date of cessation of his employment. In addition, the employment agreement contains customary confidentiality and assignment of inventions provisions. If we terminate Mr. Moran’s employment without cause or he terminates

his employment for good reason during the term of his employment agreement, other than during the Change in Control Period, we are required to pay him as severance reimbursement of the cost of COBRA coverage (or to use commercially reasonable best efforts to provide the cost of other comparable coverage if COBRA reimbursement would incur tax penalties or violate the law) for twelve months, and he may be paid a pro-rated bonus, each subject to his timely execution of a general release, which will include a non-compete covenant, and continuing compliance with such covenants. If we terminate Mr. Moran’s employment without cause or he terminates his employment for good reason during the term of the employment agreement, and during the Change in Control Period, we are required to pay him as severance reimbursement of the cost of COBRA coverage (or to use commercially reasonable best efforts to provide the cost of other comparable coverage if COBRA reimbursement would incur tax penalties or violate the law) for eighteen (18) months, accelerated vesting of all of his outstanding options, restricted stock and other equity incentive awards and his current year bonus at target levels, each subject to his timely execution and non-revocation of a general release, which will include a non-compete covenant, and continuing compliance with such covenants. Mr. Moran’s severance payments and other applicable payments and benefits will be subject to reduction to the extent doing so would put him in a better after-tax position after taking into account any excise tax he may incur under Internal Revenue Code Section 4999 in connection with any change in control of the Company or his subsequent termination of employment. Mr. Moran’s employment agreement expires on April 11, 2024.

Rachael Brake

On December 6, 2021, we entered an employment agreement with Dr. Brake (the “2021 Brake Agreement”). The 2021 Brake Agreement provides for her to serve, on an at-will basis, as Chief Scientific Officer and provides for an annual base salary of $410,000. In addition, Dr. Brake is eligible to receive an annual bonus, which is targeted at up to 40% of her base salary but may be adjusted by the Board based on her individual performance and the Company’s performance as a whole. Dr. Brake’s annual base salary and her targeted annual bonus could be adjusted annually by the Board. Pursuant to the terms of the 2021 Brake Agreement, Dr. Brake received an option to purchase up to 16,666 shares of the Company’s common stock pursuant to the Company’s 2014 Equity Compensation Plan, and is eligible, from time to time, to receive additional stock options or other awards (as permitted by the Plan), in amounts, if any, to be approved by the Board or the Compensation Committee in its discretion. Pursuant to the terms of the 2021 Brake Agreement, Dr. Brake is subject to non-compete and non-solicitation provisions, which apply during the term of her employment and for a period of six and twelve months, respectively, following termination of her employment. In addition, the 2021 Brake Agreement contains customary confidentiality and assignment of inventions provisions. Pursuant to the 2021 Brake Agreement, if the Company terminates Dr. Brake’s employment without cause or she terminates her employment for good reason during the term of the employment agreement, other than during the Change in Control Period, the Company may be required to pay her as severance twelve months of her base salary plus reimbursement of the cost of COBRA coverage (or to use commercially reasonable best efforts to provide the cost of other comparable coverage if COBRA reimbursement would incur tax penalties or violate the law) for twelve months, and she may be paid a pro-rated bonus, each subject to her timely execution and non-revocation of a general release and continuing compliance with covenants. If the Company terminates Dr. Brake’s employment without cause or she terminates her employment for good reason during the term of the employment agreement, and during the Change in Control Period, the Company may be required to pay her as severance eighteen (18) months of her base salary plus reimbursement of the cost of COBRA coverage (or to use commercially reasonable best efforts to provide the cost of other comparable coverage if COBRA reimbursement would incur tax penalties or violate the law) for eighteen (18) months, accelerated vesting of all of her outstanding options, restricted stock and other equity incentive awards and her current year bonus at target levels, each subject to her timely execution of a general release and continuing compliance with covenants. Dr. Brake’s severance payments and other applicable payments and benefits will be subject to reduction to the extent doing so would put her in a better after-tax position after taking into account any excise tax she may incur under Internal Revenue Code Section 4999 in connection with any change in control of the Company or her subsequent termination of employment. On February 2, 2024, Dr. Brake submitted a notice of resignation to the Company effective February 19, 2024.

Outstanding Equity Awards at Fiscal Year End

The following table summarizes, for each of the named executive officers, the number of shares of common stock underlying outstanding stock options held as of December 31, 2023.

Director Compensation Table

The following table sets forth information concerning the compensation paid to certain of our non-employee directors during 2023.

Non-Employee Director Compensation Policy

Our Board has approved a director compensation policy for our non-employee directors. Other than reimbursement for reasonable expenses incurred in connection with attending Board and committee meetings, this policy provides for the following cash compensation effective May 2022:

Each non-employee director receives an annual equity award grant in an amount and on vesting terms, if applicable, to be determined annually by our Compensation Committee in consultation with an independent compensation consultant under our existing equity incentive plan, or any other equity incentive plan we may adopt in the future (the “Annual Non-Employee Director Grant”). Each non-employee director that joins our Board receives an initial grant to purchase that number of shares of our common stock under our existing equity incentive plan, or any other equity incentive plan we may adopt in the future, equal to two times the Annual Non-Employee Director Grant, which shall vest one year from the grant date, or other award with equivalent value and vesting terms to be determined by the Compensation Committee. Upon a change in control, as defined in our equity incentive plan, 100% of the shares underlying these options shall become vested and exercisable immediately prior to such change in control.

Scientific Advisory Board Compensation

We do not currently have a policy regarding compensation for our scientific advisory board members; however, each member of the scientific advisory board is eligible to receive a payment of $50,000 per year and an initial grant of 1,500 options to purchase shares of our common stock at the fair market value on the date of grant.

PART IV

Item 15. EXHIBITS, FINANCIAL STATEMENT SCHEDULES

(a) List of Documents filed as part of this Report

(1) Consolidated Financial Statements

The financial statements and related notes, together with the report of EisnerAmper LLP (PCAOB ID: 274 and Location: Iselin, New Jersey) appear at pages F-2 through F-28 following the Exhibit List of the Original Form 10-K as required by Part II, Item 8 “Financial Statements and Supplementary Data”.

(2) Financial Statement Schedules.

Schedules are omitted because they are either not required, not applicable, or the information is otherwise included in the Original Form 10-K.

(3) Exhibits

The Company has filed with this report or incorporated by reference herein certain exhibits as specified below pursuant to Rule 12b-32 under the Exchange Act. See Exhibit Index following the signature page to this report for a complete list of documents filed with this report.

* Filed herewith.

** Furnished, not filed.

*** Previously filed.

**** Previously furnished.

# Confidential treatment has been granted with respect to certain portions of this exhibit. Omitted portions have been submitted separately to the SEC.

† Indicates a management contract or compensation plan, contract or arrangement.

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.