SEC FORM 4

SEC FORM 4SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Ostria Sergio J

(Last)

(First)

(Middle)

1902 RESTON METRO PLAZA

(Street)

RESTON

VIRGINIA

20190

(City)

(State)

(Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
ICF International, Inc. [ ICFI ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	Executive Vice President

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/20/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common	03/20/2026		M		1,237	A	$0.0000⁽¹⁾	25,807	D
Common	03/20/2026		M		887	A	$0.0000⁽¹⁾	26,694	D
Common	03/20/2026		M		406	A	$0.0000⁽¹⁾	27,100	D
Common	03/20/2026		M		317	A	$0.0000⁽¹⁾	27,417	D
Common	03/20/2026		F		106	D	$65.89	27,311	D
Common	03/20/2026		F		136	D	$65.89	27,175	D
Common	03/20/2026		F		296	D	$65.89	26,879	D
Common	03/20/2026		F		412	D	$65.89	26,467	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Restricted Stock Units	⁽²⁾	03/20/2026		A		3,766		⁽³⁾	⁽³⁾	Common	3,766	$0.0000	8,713	D
Restricted Stock Units	$0.0000⁽¹⁾	03/20/2026		M			317	⁽⁴⁾	⁽⁴⁾	Common	317	⁽¹⁾	2,740	D
Restricted Stock Units	$0.0000⁽¹⁾	03/20/2026		M			406	⁽⁴⁾	⁽⁴⁾	Common	406	⁽¹⁾	2,334	D
Restricted Stock Units	$0.0000⁽¹⁾	03/20/2026		M			887	⁽⁵⁾	⁽⁵⁾	Common	887	⁽¹⁾	1,447	D
Restricted Stock Units	$0.0000⁽¹⁾	03/20/2026		M			1,237	⁽⁶⁾	⁽⁶⁾	Common	1,237	⁽¹⁾	210	D

Explanation of Responses:

1. The exercise price for the restricted stock unit exercise was $65.89.

2. Each restricted stock unit is the economic equivalent of one share of ICF International, Inc.'s Common Stock.

3. These acquired restricted stock units were granted pursuant to ICF International, Inc.'s 2018 Omnibus Incentive Plan, as amended. These restricted stock units vest over a period of three (3) years, at 25% on each of the first two anniversaries of the grant and 50% on the third anniversary from the day of grant.

4. Represents the 2nd vesting anniversary (25%) of acquired restricted stock units granted pursuant to the 2018 Omnibus Incentive Plan, as amended.

5. Represents the 3rd vesting anniversary (50%) of acquired restricted stock units granted pursuant to the 2018 Omnibus Incentive Plan, as amended.

6. Represents the 1st vesting anniversary (25%) of acquired restricted stock units granted pursuant to the 2018 Omnibus Incentive Plan, as amended.

	/s/ James E. Daniel, Attorney-in-fact	03/24/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

SEC Form 4 filed by Ostria Sergio J