Cardinal Infrastructure director reports indirect holdings

Cardinal Infrastructure Group Inc. director Wood Anthony Leon Jr. filed an initial ownership report showing indirect holdings through Diamond Interests Group, LLC.

Rhea-AI Filing Summary

Cardinal Infrastructure Group Inc. director Wood Anthony Leon Jr. filed an initial ownership report showing indirect holdings through Diamond Interests Group, LLC. That entity holds 2,093,031 shares of Class B Common Stock and an equal number of LLC Units exchangeable 1-to-1 into Class A Common Stock with no expiration.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider Wood Anthony Leon Jr.

Role Director

Type	Security	Shares	Price	Value
holding	LLC Units	--	--	--
holding	Class B Common Stock	--	--	--

Holdings After Transaction: LLC Units — 2,093,031 contracts (Indirect, By Diamond Interests Group, LLC); Class B Common Stock — 2,093,031 shares (Indirect, By Diamond Interests Group, LLC)

Footnotes (2)

1. F1. 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. F2. 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.

Key Figures

Indirect Class B shares: 2,093,031 shares Underlying Class A shares: 2,093,031 shares Exercise price of LLC Units: $0.0000 per unit +1 more

4 metrics

Indirect Class B shares 2,093,031 shares Held by Diamond Interests Group, LLC as of Form 3

Underlying Class A shares 2,093,031 shares Underlying shares for LLC Units on a 1-to-1 basis

Exercise price of LLC Units $0.0000 per unit Redemption of LLC Units into Class A Common Stock

LLC ownership stake 50% interest Wood Anthony Leon Jr. ownership in Diamond Interests Group, LLC

Key Terms

Class B Common Stock, LLC Units, 1-to-1 basis, indirect ownership

4 terms

Class B Common Stock financial

"Consists of 2,093,031 shares of Class B Common Stock of Cardinal Infrastructure Group Inc."

A class B common stock is one of multiple types of a company’s ordinary shares that carries specific rights—often different voting power or dividend priority—compared with other classes. For investors it matters because those differences affect how much influence you have over company decisions, the income you might receive, and how freely the shares trade; think of it like owning a car with different keys: some keys let you start the engine and open the trunk, others only unlock the door.

LLC Units financial

"The membership units of Cardinal Civil Contracting Holdings LLC (the "LLC Units") may be redeemed"

LLC units are ownership stakes in a limited liability company, similar to shares in a corporation; each unit represents a portion of the company’s profits, losses and often voting power. For investors, LLC units matter because they determine how much money and control someone gets, how easily an interest can be sold, and how income is taxed and reported — think of owning slices of a pie that also decide how the pie is cut and shared.

1-to-1 basis financial

"may be redeemed ... for shares of Class A Common Stock on a 1-to-1 basis"

indirect ownership financial

"held by Diamond Interests Group, LLC. The Reporting Person is a member and 50% owner"

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 04/15/2026 - 07:57 PM Learn about SEC filing dates

SEC 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

OMB APPROVAL

OMB Number:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

Wood Anthony Leon Jr.

(Last) (First) (Middle)

C/O CARDINAL INFRASTRUCTURE GROUP INC.

100 E. SIX FORKS ROAD, #300

(Street)

RALEIGH NORTH CAROLINA 27609

(City) (State) (Zip)

UNITED STATES

(Country)

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 ]

3a. Foreign Trading Symbol

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

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

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

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

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

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)

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: 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)

Explanation of Responses:

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

	/s/ Tiffany Gidley, Attorney-in-Fact	04/15/2026
	** 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 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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 3: SEC 1473 (03-26)