David Sproule - 13 Mar 2026 Form 4 Insider Report for INFINITY NATURAL RESOURCES, INC. (INR)

Role: Executive Vice President and Chief Financial Officer, Director
Signature: /s/ Raleigh Wolfe, as Attorney-in-Fact for the Reporting Person
Issuer symbol: INR
Transactions as of: 13 Mar 2026
Net transactions value: $0
Form type: 4
Filing time: 13 Mar 2026, 17:15:03 UTC
Previous filing: 05 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Sproule David	Executive Vice President and Chief Financial Officer, Director	C/O INFINITY NATURAL RESOURCES, INC., 2605 CRANBERRY SQUARE, MORGANTOWN	/s/ Raleigh Wolfe, as Attorney-in-Fact for the Reporting Person	13 Mar 2026	0002049938

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	INR	Class B Common Stock	Disposed to Issuer		-275,000	-15%		1,521,581	13 Mar 2026	Direct	F1, F2
transaction	INR	Class A Common Stock	Conversion of derivative security		+275,000			275,000	13 Mar 2026	Direct	F1, F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	INR	Common Units of Infinity Natural Resources, LLC	Conversion of derivative security		-275,000	-15%		1,521,581	13 Mar 2026	Class A Common Stock	275,000		Direct	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Pursuant to the Second Amended and Restated Limited Liability Company Agreement of Infinity Natural Resources, LLC ("INR LLC"), at the request of a holder, each Common Unit of INR LLC (together with the cancellation for no consideration of an equal number of shares of Class B Common Stock, par value $0.01 per share, of the Issuer) may be redeemed at INR LLC's election for (a) newly-issued shares of Class A Common Stock, par value $0.01 per share, of the Issuer on a one-for-one basis or (b) cash. The Common Units do not expire. Shares of Class B Common Stock do not represent economic interests in the Issuer.
F2	On March 13, 2026, the Reporting Person exchanged 275,000 Common Units of INR LLC (together with the cancellation for no consideration of an equal number of shares of Class B Common Stock of the Issuer) on a one-for-one basis for shares of Class A common stock of the Issuer.

Content

Pursuant to the Second Amended and Restated Limited Liability Company Agreement of Infinity Natural Resources, LLC ("INR LLC"), at the request of a holder, each Common Unit of INR LLC (together with the cancellation for no consideration of an equal number of shares of Class B Common Stock, par value $0.01 per share, of the Issuer) may be redeemed at INR LLC's election for (a) newly-issued shares of Class A Common Stock, par value $0.01 per share, of the Issuer on a one-for-one basis or (b) cash. The Common Units do not expire. Shares of Class B Common Stock do not represent economic interests in the Issuer.

On March 13, 2026, the Reporting Person exchanged 275,000 Common Units of INR LLC (together with the cancellation for no consideration of an equal number of shares of Class B Common Stock of the Issuer) on a one-for-one basis for shares of Class A common stock of the Issuer.

Remarks:

Executive Vice President and Chief Financial Officer