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) March 5, 2026 (March 5, 2026)

Information Services Group, Inc.

(Exact name of registrant as specified in its charter)


Delaware	001-33287	20-5261587
(State or other jurisdiction of incorporation)	(Commission File Number)	(I.R.S. Employer Identification No.)

400 Atlantic Street

Stamford, CT 06901

(Address of principal executive offices)

(203) 517-3100

(Registrant’s telephone number, including area code)

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 (see General Instruction A.2 below):

☐ 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 Exchange Act (17 CFR 240.13e-4(c))

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. ☐

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


Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Shares of Common Stock, $0.001 par value	III	The Nasdaq Stock Market LLC

ITEM 2.02. RESULTS OF OPERATIONS AND FINANCIAL CONDITION

On March 5, 2026 Information Services Group, Inc. (“ISG” or the “Company”) released its earnings for the fourth quarter 2025 which ended on December 31, 2025 and is furnishing a copy of the earnings release to the Securities and Exchange Commission under Item 2.02 of this Current Report on Form 8-K. In addition, ISG will discuss its financial results during a teleconference call on Friday, March 6, 2026 at 9:00am (ET). To access the teleconference call, go to ISG’s website at www.isg-one.com. The press release is furnished herewith as Exhibit 99.1 and shall not be deemed filed for purposes of the Exchange Act.

ISG reports all financial information required in accordance with U.S. generally accepted accounting principles (GAAP). ISG believes, however, that evaluating its ongoing operating results will be enhanced if it also discloses certain non-GAAP information. These non-GAAP financial measures exclude non-cash and certain other special charges that many investors believe may obscure the user’s overall understanding of ISG’s current financial performance and the Company’s prospects for the future. ISG believes that these non-GAAP measures provide useful information to investors because they improve the comparability of the financial results between periods and provide for greater transparency of key measures used to evaluate the Company’s performance.

ISG provides adjusted EBITDA (defined as net income, plus interest, taxes, depreciation and amortization, foreign currency transaction gains/losses, non-cash stock compensation, interest accretion associated with contingent consideration, change in contingent consideration, acquisition and disposition-related cost, loss on the disposal of assets, gain on the sale of business and severance, integration and other expense), adjusted net income (defined as net income, plus amortization of intangible assets, non-cash stock compensation, foreign currency transaction gains/losses, interest accretion associated with contingent consideration, change in contingent consideration, acquisition and disposition-related cost, loss on the disposal of assets, gain on the sale of business and severance, integration, and other expense on a tax-adjusted basis), adjusted net income per diluted share, adjusted EBITDA margin and selected financial data on a constant currency basis which are non-GAAP measures that the Company believes provide useful information to both management and investors by excluding certain expenses and financial implications of foreign currency translations, which management believes are not indicative of ISG’s core operations. These non-GAAP measures are used by ISG to evaluate the Company’s business strategies and management’s performance.

Non-GAAP financial measures, when presented, are reconciled to the most closely applicable GAAP measure. Non-GAAP measures are provided as additional information and should not be considered in isolation or as a substitute for results prepared in accordance with GAAP.

ITEM 9.01 FINANCIAL STATEMENTS AND EXHIBITS

(d)Exhibit.

99.1Press Release dated March 5, 2026 regarding earnings for the fourth quarter 2025

EXHIBIT INDEX


Exhibit Number		Description

99.1 104		Press Release dated March 5, 2026 regarding earnings for the fourth quarter 2025. Cover Page Interactive Data file – the cover page iXBRL tags are embedded within the inline XBRL document.

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.


Dated: March 5, 2026	INFORMATION SERVICES GROUP, INC.

	By:	/s/ Michael P. Connors
		Michael P. Connors
		Chairman and Chief Executive Officer

Information Services Group Inc. 8-K