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

Date of Report (Date of earliest event reported): February 23, 2021

Williams Industrial Services Group Inc.

(Exact Name of Registrant as Specified in its Charter)

100 Crescent Centre Parkway, Suite 1240

Tucker, Georgia 30084

(Address of Principal Executive Offices, Zip Code)

Registrant’s telephone number, including area code: 770-879-4400

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:

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. ¨

Williams Industrial Services Group Inc. (“Williams” or the “Company”) is extremely saddened to report the passing, on February 22, 2021, of its longest-serving director and Chairman of the Board, Charles Macaluso.  Mr. Macaluso, 77, had served on the Company’s Board of Directors since January 2008 and at the time of his passing was Chairman of the Nominating & Corporate Governance Committee and a member of the Compensation Committee and the Audit Committee.

Mr. Macaluso was held in the very highest regard by his fellow directors, the Company’s management team and all of the employees at the Company with whom he came into contact.  He tirelessly served Williams and its shareholders during his tenure on the Board and his significant experience, energy, judgment, resolve and wit will be greatly missed by everyone associated with the Company.  He leaves many true and deep friendships at Williams and the Company extends its sincerest condolences to Mr. Macaluso’s family.

Director Robert B. Mills, the current chairman of the Company’s Audit Committee, will be assuming the role of Acting Chairman of the Board of Directors.

SIGNATURE

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