III

EX-99.1

2 iii-20260507xex99d1.htm

EX-99.1

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Exhibit 99.1

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Press Contact:

Will Thoretz

+1 203 517 3119

will.thoretz@isg-one.com

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Investor Contact:

Michael Sherrick

+203 517 3104

michael.sherrick@isg-one.com

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Information Services Group Announces

First-Quarter 2026 Results

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●Reports first-quarter GAAP revenues of $61.2 million, up 3% versus prior year, at the top end of guidance

●Reports first-quarter GAAP net income of $2.7 million, up 83%; GAAP EPS of $0.05, up 83%, and adjusted EPS of $0.09, up 17%

●Reports first-quarter adjusted EBITDA of $8.3 million, up 12% versus prior year

●Signs historic multiyear contract valued at up to $17 million to support AI-powered reinvention for top global manufacturer

●Declares second-quarter dividend of $0.045 per share, payable June 26, 2026, to shareholders of record as of June 5, 2026

●Sets second-quarter guidance: revenues between $62.5 million and $63.5 million and adjusted EBITDA between $8.0 million and $9.0 million

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STAMFORD, Conn., May 7, 2026 ― Information Services Group (ISG) (Nasdaq: III), a global AI-centered technology research and advisory firm, today announced financial results for the first quarter ended March 31, 2026.

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“ISG delivered a strong first quarter, with revenue of $61.2 million, up 3 percent, and adjusted EBITDA of $8.3 million, up 12 percent—both at the top end of guidance—with adjusted EBITDA margins expanding more than 100 basis points from the prior year, to 13.5 percent,” said Michael P. Connors, chairman and CEO. “Revenue growth was driven primarily by Europe, up 25 percent, and recurring revenues, up 9 percent, as AI continues to be a tailwind for our firm.

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“Adding to our recurring revenue acceleration, we signed the largest single client contract in our history—a multiyear agreement valued at up to $17 million to provide governance services for a top global manufacturer,” Connors said. “Under this landmark contract, ISG will manage $300 million in global

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technology spend with 200 technology vendors to support a large-scale, multiyear AI-powered transformation.

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“This contract and our growing profitability reflect our unique strengths as an AI-centered research and advisory powerhouse that engages strategically with clients, provides deeper insights to shape client solutions and decisions, and, importantly, delivers unmatched execution and AI governance at scale.”

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First-Quarter 2026 Results

Reported revenues for the first quarter were $61.2 million, up 3 percent from $59.6 million in the prior year.

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Revenues were $39.8 million in the Americas, down 3 percent on a reported basis. Revenues in Europe were $17.3 million, up 25 percent on a reported basis, and Asia Pacific revenues were $4.1 million, down 15 percent on a reported basis, all versus the prior year.

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ISG reported first-quarter operating income of $5.0 million, compared with operating income of $3.4 million in the prior year. Reported first-quarter net income was $2.7 million, compared with net income of $1.5 million in the prior year. Fully diluted earnings per share were $0.05, compared with fully diluted earnings per share of $0.03 in the prior year.

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Adjusted net income (a non-GAAP measure defined below under “Non-GAAP Financial Measures”) for the first quarter was $4.3 million, or $0.09 per share on a fully diluted basis, compared with adjusted net income of $3.7 million, or $0.07 per share on a fully diluted basis, in the prior year’s first quarter.

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First-quarter adjusted EBITDA (a non-GAAP measure defined below under “Non-GAAP Financial Measures”) was $8.3 million, up 12 percent from the prior-year first quarter. Adjusted EBITDA margin (a non-GAAP measure calculated by dividing adjusted EBITDA by reported revenues) was 13.5 percent, compared with 12.4 percent in the prior year.

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Other Financial and Operating Highlights

ISG used cash from operations of $0.7 million in the first quarter. The firm’s cash balance totaled $22.7 million at March 31, 2026, up from $20.1 million at March 31, 2025, but down from $28.7 million at December 31, 2025. During the first quarter, ISG paid dividends of $2.2 million and repurchased $2.1 million of shares.

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2026 Second-Quarter Revenue and Adjusted EBITDA Guidance

“Clients remain somewhat cautious in the face of current macro and geopolitical conditions and as a result are focusing on cost optimization and preparing for enterprise-scale adoption of AI, which play to ISG strengths,” said Connors. “We see current demand trends continuing. ISG is targeting revenues between $62.5 million and $63.5 million and adjusted EBITDA of between $8.0 million and $9.0 million, which will continue our year-over-year growth. We will monitor the macroeconomic environment, including the impact of FX, inflation and other factors, and adjust our business plans accordingly.”

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Quarterly Dividend

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The ISG Board of Directors declared a second-quarter dividend

Information Services Group, Inc._March 5, 2026 0001371489false00013714892026-03-052026-03-05 ​ ​

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549 ​

FORM 8-K

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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) ​ ​

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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

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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 mos

Information Services Group, Inc._November 3, 2025 0001371489false00013714892025-11-032025-11-03 ​ ​

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) November 3, 2025 (November 3, 2025) ​ Information Services Group, Inc. (Exact name of registrant as specified in its charter) ​ ​

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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

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ITEM 2.02. RESULTS OF OPERATIONS AND FINANCIAL CONDITION

​ On November 3, 2025 Information Services Group, Inc. (“ISG” or the “Company”) released its earnings for the third quarter 2025 which ended on September 30, 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 Monday, November 3, 2025 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, 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, 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