[Form 4] Sitio Royalties Corp. Insider Trading Activity

Rhea-AI Filing Summary

Sitio Royalties Corp. reporting persons affiliated with Blackstone effected transactions on 08/19/2025 under the parties' merger agreement. All outstanding shares of the Issuer's Class C Common Stock were automatically cancelled and Opco units converted into interests in Viper Energy entities: recipients received 0.4855 limited liability units of Viper Energy Partners LLC and 0.4855 shares of Class B common stock of Viper Energy, Inc. The filing reports the disposition of 8,637,727 and 11,400,218 Class C shares (and corresponding Opco units) and 57,288 consideration allocation rights, leaving 0 Class A common shares beneficially owned by the reporting entities following the transactions. The filing states certain previously granted restricted stock awards vested at closing.

Insights

M&A Specialist

TL;DR Transaction documents converted Sitio Class C shares and Opco units into Viper Energy interests as part of the merger close.

The Form 4 documents a structural disposition arising from the Agreement and Plan of Merger dated June 2, 2025, where each outstanding Class C share was cancelled and Opco units were converted into specified Viper Energy interests on a fixed 0.4855 ratio. The reported numeric transfers—8,637,727 and 11,400,218 Class C shares/opco units—are large absolute amounts and reflect the mechanics of the merger consideration rather than open-market trades. The filing also confirms vesting of previously granted restricted awards at closing, and that the reporting entities now hold zero Class A common shares of the Issuer following these conversions.

Securities Analyst

TL;DR Large block cancellations and conversions materially change the reporting persons' holdings in Sitio structure, replacing equity with Viper interests.

The Form 4 is a post-merger ownership reconciliation: two substantial lots of Class C shares/Opco units (8,637,727 and 11,400,218) and 57,288 consideration allocation rights were disposed under codes indicating non-open-market disposition. Following the transactions, reported beneficial ownership of Class A common stock is zero for the reporting entities. Footnotes clarify complex affiliated ownership and allocation arrangements among multiple Blackstone-related entities; filings were submitted by multiple reporting persons to reflect electronic system limits. This is a structural ownership conversion tied to a corporate transaction rather than operational performance information.

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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X

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^*

Blackstone EMA II L.L.C.

(Last) (First) (Middle)

C/O BLACKSTONE INC.

345 PARK AVENUE

(Street)

NEW YORK NY 10154

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Sitio Royalties Corp. [ STR ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
08/19/2025

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

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

	Form filed by One Reporting Person
X	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 C Common Stock	08/19/2025		J(8)		8,637,727	D	(8)	0	I	See Footnotes(1)(3)(5)(11)(12)(13)
Class C Common Stock	08/19/2025		J(8)		11,400,218	D	(8)	0	I	See Footnotes(2)(4)(5)(11)(12)(13)

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
Opco Units	(6)(7)(8)	08/19/2025		J(6)(7)			8,637,727	(6)(7)(8)	(6)(7)(8)	Class A common stock	8,637,727	(6)(7)(8)	0	I	See Footnotes(1)(3)(5)(11)(12)(13)
Opco Units	(6)(7)(8)	08/19/2025		J(6)(7)			11,400,218	(6)(7)(8)	(6)(7)(8)	Class A common stock	11,400,218	(6)(7)(8)	0	I	See Footnotes(2)(4)(5)(11)(12)(13)
Consideration Allocation Rights	(9)(10)	08/19/2025		J(9)(10)			57,288	(9)(10)	(9)(10)	Class A common stock	57,288	(9)(10)	0	I	See Footnotes(2)(4)(5)(11)(12)(13)

1. Name and Address of Reporting Person^*

Blackstone EMA II L.L.C.

(Last) (First) (Middle)

C/O BLACKSTONE INC.

345 PARK AVENUE

(Street)

NEW YORK NY 10154

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

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

1. Name and Address of Reporting Person^*

Blackstone Management Associates VII L.L.C.

(Last) (First) (Middle)

C/O BLACKSTONE INC.

345 PARK AVENUE

(Street)

NEW YORK NY 10154

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

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

1. Name and Address of Reporting Person^*

BMA VII L.L.C.

(Last) (First) (Middle)

C/O BLACKSTONE INC.

345 PARK AVENUE

(Street)

NEW YORK NY 10154

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

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

1. Name and Address of Reporting Person^*

Blackstone Holdings III L.P.

(Last) (First) (Middle)

C/O BLACKSTONE INC.

345 PARK AVENUE

(Street)

NEW YORK NY 10154

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

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

1. Name and Address of Reporting Person^*

Blackstone Holdings III GP L.P.

(Last) (First) (Middle)

C/O BLACKSTONE INC.

345 PARK AVENUE

(Street)

NEW YORK NY 10154

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

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

1. Name and Address of Reporting Person^*

Blackstone Holdings III GP Management L.L.C.

(Last) (First) (Middle)

C/O BLACKSTONE INC.

345 PARK AVENUE

(Street)

NEW YORK NY 10154

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

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

1. Name and Address of Reporting Person^*

Blackstone Inc.

(Last) (First) (Middle)

345 PARK AVENUE

(Street)

NEW YORK NY 10154

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

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

1. Name and Address of Reporting Person^*

Blackstone Group Management L.L.C.

(Last) (First) (Middle)

C/O BLACKSTONE INC.

345 PARK AVENUE

(Street)

NEW YORK NY 10154

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

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

1. Name and Address of Reporting Person^*

SCHWARZMAN STEPHEN A

(Last) (First) (Middle)

C/O BLACKSTONE INC.

345 PARK AVENUE

(Street)

NEW YORK NY 10154

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

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

Explanation of Responses:

1. Reflects securities directly held by BX Royal Aggregator LP ("Royal Aggregator").

2. Reflects securities directly held by RRR Aggregator LLC ("RRR Aggregator").

3. BCP VI/BEP Holdings Manager L.L.C. is the general partner of Royal Aggregator. Blackstone Energy Management Associates L.L.C. and Blackstone Management Associates VI L.L.C. are the managing members of BCP VI/BEP Holdings Manager L.L.C. Blackstone EMA L.L.C. is the sole member of Blackstone Energy Management Associates L.L.C. BMA VI L.L.C. is the sole member of Blackstone Management Associates VI L.L.C.

4. BX Primexx Topco LLC is the sole member of RRR Aggregator. BCP VII/BEP II Holdings Manager L.L.C. is the managing member of BX Primexx Topco LLC. Blackstone Energy Management Associates II L.L.C. and Blackstone Management Associates VII L.L.C. are the managing members of BCP VII/BEP II Holdings Manager L.L.C. Blackstone EMA II L.L.C. is the sole member of Blackstone Energy Management Associates II L.L.C. BMA VII L.L.C. is the sole member of Blackstone Management Associates VII L.L.C.

5. Blackstone Holdings III L.P. is the managing member of each of BMA VI L.L.C., Blackstone EMA L.L.C., BMA VII L.L.C. and Blackstone EMA II L.L.C. Blackstone Holdings III GP L.P. is the general partner of Blackstone Holdings III L.P. Blackstone Holdings III GP Management L.L.C. is the general partner of Blackstone Holdings III GP L.P. Blackstone Inc. ("Blackstone") is the sole member of Blackstone Holdings III GP Management L.L.C. The sole holder of the Series II preferred stock of Blackstone is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is wholly-owned by Blackstone's senior managing directors and controlled by its founder, Stephen A. Schwarzman.

6. The terms of the Second Amended and Restated Agreement of Limited Partnership of Sitio Royalties Operating Partnership, LP ("Opco") provide that, subject to certain restrictions contained therein, each holder of the common units ("Opco Units") in Opco (other than Sitio Royalties Corp. (the "Issuer")) generally has the right to cause Opco to redeem all or a portion of its Opco Units (the "Redemption Right") in exchange for shares of Class A Common Stock of the Issuer on a one-for-one basis or, at Opco's election, an equivalent amount of cash.

7. (Continued from Footnote 6) The Issuer may, at its option, effect a direct purchase of such Opco Units for shares of Class A Common Stock of the Issuer in lieu of such a redemption by Opco. Upon the future redemption or sale of Opco Units pursuant to the Redemption Right, a corresponding number of shares of Class C Common Stock and Opco Units will be cancelled. The Opco Units and the right to exercise the Redemption Right have no expiration date.

8. On August 19, 2025, pursuant to the Agreement and Plan of Merger, dated as of June 2, 2025 (the "merger agreement"), each share of Class C Common Stock of the Issuer issued and outstanding was automatically cancelled and ceased to exist and the Opco Units converted into the right to receive (i) 0.4855 units representing limited liability company interests in Viper Energy Partners LLC and (ii) 0.4855 shares of Class B common stock of Viper Energy, Inc.

9. The Issuer previously granted restricted stock awards (the "Stock Award"), consisting of shares of the Issuer's Class C Common Stock and Opco Units, to its executive officers in an amount equal to 0.5% of the number of shares received by the former holders of the limited liability company interests of DPM HoldCo, LLC (the "DPM Members") (the "Restricted Shares"). Each restricted stock award will vest in equal installments on the first four anniversaries of the applicable date of grant, so long as the executive officer remains continuously employed by the Issuer through each vesting date. To the extent that a restricted stock award is forfeited, the shares of Class C Common Stock and Opco Units subject to such forfeited award will be returned to the Issuer.

10. (Continued from Footnote 9) In connection with the foregoing, the Issuer and the DPM Members entered into that certain Assignment and Allocation Agreement, dated as of June 7, 2022 (the "Allocation Agreement"), pursuant to which the Issuer agreed that it would re-issue to the DPM Members, on a one-for-one basis, shares of Class C Common Stock and Opco Units to the extent Restricted Shares are forfeited by the original holders thereof, with RRR Aggregator entitled to receive its pro rata portion of any such shares re-issued. The Reporting Persons are no longer entitled to receive such securities as all of the Stock Awards vested in connection with the closing of the transactions contemplated by the merger agreement.

11. Due to the limitations of the electronic filing system certain Reporting Persons are filing a separate Form 4.

12. Information with respect to each of the Reporting Persons is given solely by such Reporting Person, and no Reporting Person has responsibility for the accuracy or completeness of information supplied by another Reporting Person.

13. Each of the Reporting Persons (other than to the extent it directly holds securities reported herein) disclaims beneficial ownership of the securities held by the other Reporting Persons, except to the extent of such Reporting Person's pecuniary interest therein, and, pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, each of the Reporting Persons (other than to the extent it directly holds securities reported herein) states that the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all of the reported securities for purposes of Section 16 or for any other purpose.

Remarks:

Form 2 of 2

	Blackstone EMA II L.L.C., By: /s/ Robert Brooks, Name: Robert Brooks, Title: Authorized Signatory	08/21/2025
	Blackstone Management Associates VII L.L.C., By: BMA VII L.L.C., its sole member, By: /s/ Robert Brooks, Name: Robert Brooks, Title: Authorized Signatory	08/21/2025
	BMA VII L.L.C., By: /s/ Robert Brooks, Name: Robert Brooks, Title: Authorized Signatory	08/21/2025
	Blackstone Holdings III L.P., By: Blackstone Holdings III GP L.P., its general partner, By: Blackstone Holdings III GP Management L.L.C., its general partner, By: /s/ Victoria Portnoy, Name: Victoria Portnoy, Title: Managing Director - Assistant Secretary	08/21/2025
	Blackstone Holdings III GP L.P., By: Blackstone Holdings III GP Management L.L.C., its general partner, By: /s/ Victoria Portnoy, Name: Victoria Portnoy, Title: Managing Director - Assistant Secretary	08/21/2025
	Blackstone Holdings III GP Management L.L.C., By: /s/ Victoria Portnoy, Name: Victoria Portnoy, Title: Managing Director - Assistant Secretary	08/21/2025
	Blackstone Inc., By: /s/ Victoria Portnoy, Name: Victoria Portnoy, Title: Managing Director - Assistant Secretary	08/21/2025
	Blackstone Group Management L.L.C., By: /s/ Victoria Portnoy, Name: Victoria Portnoy, Title: Managing Director - Assistant Secretary	08/21/2025
	Stephen A. Schwarzman, /s/ Stephen A. Schwarzman	08/21/2025
	** Signature of Reporting Person	Date
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