Cardinal Infrastructure (CDNL) director purchase totals 10,000 shares at $21

Rhea-AI Filing Summary

Cardinal Infrastructure Group Inc. disclosed that one of its directors bought additional shares of the company’s Class A common stock. On 12/11/2025, the director purchased 10,000 shares in an open-market transaction coded as a purchase at a price of $21 per share. Following this transaction, the director directly beneficially owns 16,725 Class A common shares.

The filing notes that the shares reported are subject to a lock-up agreement effective as of 12/9/2025 with Stifel, Nicolaus & Company, Incorporated and William Blair & Company, L.L.C, under which these shares cannot be sold for 180 days after the lock-up date.

SEC 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^*

Wimmer Richard Bennett

(Last) (First) (Middle)

C/O CARDINAL INFRASTRUCTURE GROUP INC.

100 E. SIX FORKS ROAD, #300

(Street)

RALEIGH NC 27609

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Cardinal Infrastructure Group Inc. [ CDNL ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
12/11/2025

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

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 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)
			Code	V	Amount	(A) or (D)	Price
Class A Common Stock	12/11/2025		P		10,000(1)	A	$21	16,725	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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The shares of Common Stock reported on this Form 4 are subject to a lock-up agreement, effective as of 12/9/2025 (the "Lock-up Date"), between the Reporting Person and Stifel, Nicolaus & Company, Incorporated and William Blair & Company, L.L.C, pursuant to which shares of Common Stock reported herein cannot be sold for 180 days following the Lock-up Date.

	/s/ Tiffany Gidley, Attorney-in-Fact	12/11/2025
	** 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).
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.

FAQ

What insider transaction did Cardinal Infrastructure Group Inc. (CDNL) report?

The company reported that a director bought 10,000 shares of its Class A common stock in an open-market purchase on 12/11/2025.

At what price were the CDNL shares purchased in this insider trade?

The director purchased the Class A common stock at a price of $21 per share.

How many Cardinal Infrastructure (CDNL) shares does the insider own after the transaction?

After the reported transaction, the director directly beneficially owns 16,725 shares of Class A common stock.

What is the reporting person’s relationship to Cardinal Infrastructure Group Inc. (CDNL)?

The reporting person is identified as a Director of Cardinal Infrastructure Group Inc.

Is there a lock-up on the CDNL shares bought in this transaction?

Yes. The shares reported are subject to a lock-up agreement effective as of 12/9/2025, under which they cannot be sold for 180 days following that date.

Who are the counterparties to the lock-up agreement on the CDNL shares?

The lock-up agreement is between the reporting person and Stifel, Nicolaus & Company, Incorporated and William Blair & Company, L.L.C.

Was this CDNL insider report filed by one or multiple reporting persons?

The document indicates that the form was filed by one reporting person.