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 526, 2026

ICF International, Inc.

(Exact name of registrant as specified in its charter)

Delaware	001-33045	22-3661438
(State or other jurisdiction of incorporation or organization)	(Commission File Number)	(I.R.S. Employer Identification Number)
1902 Reston Metro Plaza, Reston Virginia		20190
1902 Reston Metro Plaza, Reston, Virginia		20190
(Address of principal executive offices)		(Zip Code)
Registrant’s telephone number, including area code:(703) 934-3000

Registrant’s telephone number, including area code:(703) 934-3000

Not Applicable

(Former name or former address, if changed since last report.)

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

Title of each class Trading Symbols(s) Name of each exchange on which registered Common Stock ICFI The ~~NASDAQ~~Nasdaq Global Select Market

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 Instructions 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 the 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.

Item 72.0102 ~~Regulation~~Results FDof ~~Disclosure~~Operations and Financial Condition

On March 26, 2026, ICF International, Inc. (the “Company”) announced it will release its ~~participation~~first asquarter a2026 ~~presenter~~earnings atresults after the ~~Canaccord~~market ~~2nd~~closes ~~Annual~~on CGMay ~~Virtual~~7, ~~Sustainability~~2026. ~~Summit~~The ~~(the~~Company ~~“Conference”)~~will onconduct ~~Thursday,~~a ~~March~~conference 12call at 4:30 p.m. Eastern Time on May 7, 2026, ~~which~~to ~~will~~discuss ~~also~~the beresults ~~available~~for bythe ~~live~~quarter ~~audio~~ended ~~webcast~~March 31, 2026. Instructions on how to participate in the ~~webcast~~conference call are contained in the press release, a copy of which is attached hereto as Exhibit 99.1.

The information contained in this report, including Exhibit 99.1 attached hereto, is considered to be “furnished” and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to liability under that Section. The information in this Current Report shall not be incorporated by reference into any filing or other document pursuant to the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such filing or document.

Item 9.01 Financial Statements and Exhibits

(d) ~~The following exhibit is being furnished with this Current Report on Form 8-K:~~Exhibits

Exhibit No. Description

99.1	Press Release dated March 26, 2026
104	Cover Page Interactive Data File (embedded within the Inline XBRL document)

99.1 ICF International, Inc. press release dated March 5, 2026

104 Cover Page Interactive Data File (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.

	ICF International, Inc.
Date: March 5, 2026	By:	/s/ James E. Daniel
Date: March 26, 2026	By:	/s/ James E. Daniel
		James E. Daniel
		Executive Vice President & General Counsel
		Executive Vice President and General Counsel

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