WhiteHawk Minerals officer reports grants, redemption

WhiteHawk Minerals Corp. officer Matthew Ian Heinlein reported compensation-related share movements around the company’s initial public offering.

Rhea-AI Filing Summary

WhiteHawk Minerals Corp. officer Matthew Ian Heinlein reported compensation-related share movements around the company’s initial public offering. On March 2, he acquired 100 shares of Series D Preferred Stock from the company at $1,000 per share. On June 8, he received 5,584 shares of Class A Common Stock through a corporate reorganization, leaving him with that same number of common shares directly owned. On June 10, the company redeemed his 100 Series D Preferred shares in connection with the IPO for their stated value plus $5,621.92 in accrued dividends and additional amounts required to deliver the contractual Minimum Return.

Insider Trade Summary

3 transactions reported

Mixed 3 txns

Insider Heinlein Matthew Ian

Role See Remarks

Type	Security	Shares	Price	Value
Disposition	Series D Preferred Stock	100	$0.00	$0.00
Grant/Award	Class A Common Stock	5,584	$0.00	$0.00
Grant/Award	Series D Preferred Stock	100	$0.00	$0.00

Holdings After Transaction: Class A Common Stock — 5,584 shares (Direct); Series D Preferred Stock — 0 shares (Direct)

Footnotes (4)

1. F1. This transaction occurred prior to the Issuer's registration of a class of equity securities under Section 12 of the Securities Exchange Act of 1934, as amended, in connection with the Issuer's initial public offering, and is reported herein pursuant to Rule 16a-2(a).
2. F2. Represents an acquisition of Series D Preferred Stock from the Issuer for $1,000 per share.
3. F3. Represents an acquisition of shares of Class A Common Stock pursuant to a reorganization of the Issuer.
4. F4. The Series D Preferred Stock was redeemed by the Issuer in connection with the consummation of its initial public offering, for an amount consisting of (i) the stated value of $1,000 per share and (ii) $5,621.92 of accrued dividends and additional amounts necessary such that the holder received the Minimum Return (as defined in the Certificate of Designations of the Series D Preferred Stock).

Key Figures

Series D Preferred acquired: 100 shares Series D purchase price: $1,000 per share Accrued dividends amount: $5,621.92 +3 more

6 metrics

Series D Preferred acquired 100 shares Acquisition on March 2, 2026

Series D purchase price $1,000 per share Acquisition from issuer

Accrued dividends amount $5,621.92 Paid on Series D redemption

Class A Common received 5,584 shares Reorganization on June 8, 2026

Class A holdings after 5,584 shares Direct ownership after transactions

Series D redeemed 100 shares Disposition to issuer on June 10, 2026

Key Terms

Series D Preferred Stock, Class A Common Stock, initial public offering, Certificate of Designations, +2 more

6 terms

Series D Preferred Stock financial

"Represents an acquisition of Series D Preferred Stock from the Issuer for $1,000 per share."

Series D preferred stock is a specific class of preferred shares typically issued in a later-stage financing round that gives holders special rights such as priority for payout before common shareholders, fixed or cumulative dividends, and often the option to convert into common shares. Investors care because these shares affect who gets paid first in a sale or liquidation, influence ownership and voting power, and change how future fundraising or an exit will impact an investor’s return—like a VIP ticket that can sometimes be exchanged for a regular ticket if that proves more valuable.

Class A Common Stock financial

"Represents an acquisition of shares of Class A Common Stock pursuant to a reorganization of the Issuer."

Class A common stock is a category of a company’s shares that carries a specific set of ownership rights—most commonly defined voting power and claims on dividends—set out in the company’s charter. For investors it matters because the class determines how much influence you have over corporate decisions, the share’s likely dividend and trading behavior, and how it compares in value to other share classes, like choosing a particular seat with different privileges at the company’s decision-making table.

initial public offering financial

"in connection with the Issuer's initial public offering, and is reported herein pursuant to Rule 16a-2(a)."

An initial public offering (IPO) is when a private company first sells its shares to the public and becomes a stock-listed company. It matters because it allows the company to raise money from a wide range of investors, helping it grow, while giving early shareholders a way to sell some of their ownership.

Certificate of Designations regulatory

"Minimum Return (as defined in the Certificate of Designations of the Series D Preferred Stock)."

A certificate of designations is a formal legal document that spells out the specific rights and rules attached to a particular class of stock, most often preferred shares. It tells investors who gets paid first, what dividends or conversion rights exist, and any voting or liquidation priorities—like an instruction sheet that decides which shareholders get preference if a company pays out or is sold. Those terms directly affect a security’s value and risk.

Minimum Return financial

"additional amounts necessary such that the holder received the Minimum Return."

Section 12 of the Securities Exchange Act of 1934 regulatory

"prior to the Issuer's registration of a class of equity securities under Section 12 of the Securities Exchange Act of 1934, as amended"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transactions did WhiteHawk Minerals (WHK) report for Matthew Heinlein?

Matthew Heinlein reported acquiring 100 shares of Series D Preferred Stock, receiving 5,584 Class A Common shares in a reorganization, and having the 100 preferred shares later redeemed by WhiteHawk Minerals in connection with its initial public offering.

How many WhiteHawk Minerals (WHK) common shares does Matthew Heinlein hold after these transactions?

After the reported Form 4 transactions, Matthew Heinlein directly holds 5,584 shares of WhiteHawk Minerals Class A Common Stock. His Series D Preferred Stock position was fully redeemed, leaving no remaining preferred shares reported in this filing.

What happened to Matthew Heinlein’s Series D Preferred Stock in WhiteHawk Minerals (WHK)?

Heinlein first acquired 100 shares of Series D Preferred Stock from WhiteHawk Minerals at $1,000 per share, then those 100 shares were redeemed by the company in connection with its initial public offering, including accrued dividends and additional Minimum Return amounts.

How did Matthew Heinlein acquire Class A Common Stock of WhiteHawk Minerals (WHK)?

Heinlein acquired 5,584 shares of WhiteHawk Minerals Class A Common Stock through a reorganization of the company. The Form 4 describes this as a grant or award acquisition, not an open-market purchase, and reports these shares as directly owned afterward.

Was the WhiteHawk Minerals (WHK) insider activity an open-market trade?

No. The Form 4 classifies Heinlein’s transactions as grants, awards, and a disposition to the issuer. The preferred stock was bought directly from the company and later redeemed, while the common stock was received via reorganization, not through market trades.

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

Form 4 Insider Transactions: What Each Field Means →

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Accepted by SEC EDGAR 06/12/2026 - 04:05 PM Learn about SEC filing dates

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

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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^*

Heinlein Matthew Ian

(Last) (First) (Middle)

2000 MARKET STREET, SUITE 910

(Street)

PHILADELPHIA PENNSYLVANIA 19103

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
WhiteHawk Minerals Corp. [ WHK ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/02/2026

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)
			Code	V	Amount	(A) or (D)	Price
Series D Preferred Stock	03/02/2026(1)		A		100	A	(2)	100	D
Class A Common Stock	06/08/2026(1)		A		5,584	A	(3)	5,584	D
Series D Preferred Stock	06/10/2026		D		100	D	(4)	0	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. This transaction occurred prior to the Issuer's registration of a class of equity securities under Section 12 of the Securities Exchange Act of 1934, as amended, in connection with the Issuer's initial public offering, and is reported herein pursuant to Rule 16a-2(a).

2. Represents an acquisition of Series D Preferred Stock from the Issuer for $1,000 per share.

3. Represents an acquisition of shares of Class A Common Stock pursuant to a reorganization of the Issuer.

4. The Series D Preferred Stock was redeemed by the Issuer in connection with the consummation of its initial public offering, for an amount consisting of (i) the stated value of $1,000 per share and (ii) $5,621.92 of accrued dividends and additional amounts necessary such that the holder received the Minimum Return (as defined in the Certificate of Designations of the Series D Preferred Stock).

Remarks:

Officer title: Vice President, Head of Corporate Development & Strategy

	/s/ Barrie Hananel, Attorney-in-Fact	06/12/2026
	** 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).
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 4: SEC 1474 (03-26)