Initial Statement of Beneficial Ownership (Form 3)

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES 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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(Print or Type Responses)

1. Name and Address of Reporting Person * Wood Benjamin 2. Date of Event Requiring Statement (Month/Day/Year) 03/12/2026 3. Issuer Name and Ticker or Trading Symbol Cardinal Infrastructure Group Inc. [CDNL] (Last) (First) (Middle) C/O CARDINAL INFRASTRUCTURE GROUP INC., 100 E. SIX FORKS ROAD, #300 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) CHIEF OPERATING OFFICER 5. If Amendment, Date Original Filed (Month/Day/Year) (Street) RALEIGH, NC 27609 6. Individual or Joint/Group Filing (Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Beneficially Owned

1.Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5) Class B Common Stock 2,093,031 I By Diamond Interests Group, LLC(1)

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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
LLC Units	(2)	(2)	Class A Common Stock	2,093,031	(2)	I	By Diamond Interests Group, LLC(1)

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Wood Benjamin C/O CARDINAL INFRASTRUCTURE GROUP INC. 100 E. SIX FORKS ROAD, #300 RALEIGH, NC 27609			CHIEF OPERATING OFFICER

Signatures

/s/ Tiffany Gidley, Attorney-in-Fact		04/15/2026
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 5(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).
(1)	Consists of 2,093,031 shares of Class B Common Stock of Cardinal Infrastructure Group Inc. held by Diamond Interests Group, LLC. The Reporting Person is a member and 50% owner of Diamond Interests Group, LLC.
(2)	The membership units of Cardinal Civil Contracting Holdings LLC (the "LLC Units") may be redeemed by the Reporting Person at any time at the option of the holder for shares of Class A Common Stock on a 1-to-1 basis, and a corresponding number of shares of Class B Common Stock will be forfeited in connection with the redemption. The LLC Units have no expiration date.
Remarks: Exhibit 24.1 - Power of Attorney

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