REI

SEC source: 0001628280-25-005901 · wk-form4_1739587169.xml · nonDerivative · entry 1

Petrelli Anthony Benedict · CIK 0001354750 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 770,325

F1 · price: This restricted stock unit award vests on February 12, 2026, subject to the terms of the restricted stock unit agreement. Each restricted stock unit represents the contingent right to receive one share of common stock of the Issuer.

SEC source: 0001628280-25-005893 · wk-form4_1739586710.xml · nonDerivative · entry 1

CRUM JOHN A · CIK 0001240204 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 514,125

F1 · price: This restricted stock unit award vests on February 12, 2026, subject to the terms of the restricted stock unit agreement. Each restricted stock unit represents the contingent right to receive one share of common stock of the Issuer.

SEC source: 0001628280-25-005897 · wk-form4_1739586920.xml · nonDerivative · entry 1

HARRIS RICHARD E · CIK 0001244730 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 386,725

F1 · price: This restricted stock unit award vests on February 12, 2026, subject to the terms of the restricted stock unit agreement. Each restricted stock unit represents the contingent right to receive one share of common stock of the Issuer.

SEC source: 0001628280-25-005891 · wk-form4_1739586609.xml · nonDerivative · entry 1

MITCHELL THOMAS L · CIK 0001250243 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 464,125

F1 · price: This restricted stock unit award vests on February 12, 2026, subject to the terms of the restricted stock unit agreement. Each restricted stock unit represents the contingent right to receive one share of common stock of the Issuer.

SEC source: 0001628280-25-005899 · wk-form4_1739587060.xml · nonDerivative · entry 1

Roesener Regina · CIK 0001789267 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 424,628

F1 · price: This restricted stock unit award vests on February 12, 2026, subject to the terms of the restricted stock unit agreement. Each restricted stock unit represents the contingent right to receive one share of common stock of the Issuer.

SEC source: 0001628280-25-005895 · wk-form4_1739586847.xml · nonDerivative · entry 1

Habachy David · CIK 0001738013 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 264,396

F1 · price: This restricted stock unit award vests on February 12, 2026, subject to the terms of the restricted stock unit agreement. Each restricted stock unit represents the contingent right to receive one share of common stock of the Issuer.

SEC source: 0001628280-25-005881 · wk-form4_1739586082.xml · nonDerivative · entry 1

Dyes Alexander · CIK 0001837536 · EVP Engineering, Corp Strategy

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 780,904

F1 · price: This restricted stock unit award vests on an equal annual basis over a three-year period with the first vesting date on February 12, 2026, subject to the terms of the restricted stock unit agreement. Each restricted stock unit represents the contingent right to receive one share of common stock of the Issuer.

SEC source: 0001628280-25-005879 · wk-form4_1739586010.xml · nonDerivative · entry 1

McKinney Paul D. · CIK 0001622419 · Director · CEO and Chairman of the Board

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,643,751

F1 · price: This restricted stock unit award vests on an equal annual basis over a three-year period with the first vesting date on February 12, 2026, subject to the terms of the restricted stock unit agreement. Each restricted stock unit represents the contingent right to receive one share of common stock of the Issuer.

SEC source: 0001628280-25-005883 · wk-form4_1739586152.xml · nonDerivative · entry 1

Thomas Travis · CIK 0001857253 · EVP, Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 717,022

F1 · price: This restricted stock unit award vests on an equal annual basis over a three-year period with the first vesting date on February 12, 2026, subject to the terms of the restricted stock unit agreement. Each restricted stock unit represents the contingent right to receive one share of common stock of the Issuer.

SEC source: 0001628280-25-005875 · wk-form4_1739585854.xml · nonDerivative · entry 1

Dyes Alexander · CIK 0001837536 · EVP Engineering, Corp Strategy

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 600,416

F1 · shares: Shares of Common Stock withheld by the Registrant to cover tax withholding obligations of the reporting person arising from the settlement of a restricted stock unit award granted under the Registrant's long-term incentive plan.

SEC source: 0001628280-25-005877 · wk-form4_1739585923.xml · nonDerivative · entry 1

McKinney Paul D. · CIK 0001622419 · Director · CEO and Chairman of the Board

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,048,629

F1 · shares: Shares of Common Stock withheld by the Registrant to cover tax withholding obligations of the reporting person arising from the settlement of a restricted stock unit award granted under the Registrant's long-term incentive plan.

SEC source: 0001628280-25-005873 · wk-form4_1739585761.xml · nonDerivative · entry 1

Thomas Travis · CIK 0001857253 · EVP, Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 536,534

F1 · shares: Shares of Common Stock withheld by the Registrant to cover tax withholding obligations of the reporting person arising from the settlement of a restricted stock unit award granted under the Registrant's long-term incentive plan.

SEC source: 0001628280-24-052595 · wk-form4_1735597276.xml · nonDerivative · entry 1

Roesener Regina · CIK 0001789267 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 430,262

SEC source: 0001628280-25-000405 · wk-form4a_1735948527.xml · nonDerivative · entry 1

Roesener Regina · CIK 0001789267 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 333,165

F1 · security: On December 30, 2024, the reporting person filed a Form 4 which inadvertently omitted the transaction reported hereby.

SEC source: 0001628280-24-050858 · wk-form4_1733968487.xml · nonDerivative · entry 1

Parr James J. · CIK 0002046193 · EVP, Exploration & Geosciences

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 83,000

F1 · price: This restricted stock unit award vests on an equal annual basis over a three-year period with the first vesting date on November 18, 2025, subject to the terms of the restricted stock unit agreement. Each restricted stock unit represents the contingent right to receive one share of common stock of the Issuer.

SEC source: 0000950170-24-113925 · ownership.xml · nonDerivative · entry 1

Warburg Pincus (E&P) XII LLC · CIK 0001912643 · 10% owner

Warburg Pincus (E&P) XII, L.P. · CIK 0001912644 · 10% owner

Warburg Pincus XII (E&P) Partners-2, L.P. · CIK 0001792220 · 10% owner

Warburg Pincus XII (E&P) Partners-1, L.P. · CIK 0001792222 · 10% owner

WP XII STRONGHOLD HOLDINGS, L.P. · CIK 0001945099 · 10% owner

WP XII (E&P) Partners (A), L.P. · CIK 0001792213 · 10% owner

Warburg Pincus Private Equity (E&P) XII-E (A), L.P. · CIK 0001792224 · 10% owner

Warburg Pincus Private Equity (E&P) XII-D (A), L.P. · CIK 0001792199 · 10% owner

Warburg Pincus Private Equity (E&P) XII (A), L.P. · CIK 0001792241 · 10% owner

WARBURG PINCUS XII (E&P) PARTNERS-2 STRONGHOLD, LLC · CIK 0001945090 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 35,520,643

F1 · balance_after: Following the reported transaction, the shares of common stock, par value $0.001 of the Issuer (the "Common Stock") are directly held as follows: 10,027,478 by Warburg Pincus Energy (E&P)-A, L.P.; 6,399,044 by WP Energy Stronghold Holdings, L.P.; 523,929 by WP Energy Partners Stronghold Holdings, L.P.; 605,627 by Warburg Pincus Energy (E&P) Partners-A, LP; 204,244 by Warburg Pincus Energy (E&P) Partners-B Stronghold, LLC; 6,490,509 by Warburg Pincus Private Equity (E&P) XII (A), L.P.; 155,758 by Warburg Pincus Private Equity (E&P) XII-D (A), L.P.; 235,679 by Warburg Pincus Private Equity (E&P) XII-E (A), L.P.; 424,472 by WP XII (E&P) Partners (A), L.P.; 9,260,054 by WP XII Stronghold Holdings, L.P.; 1,092,260 by Warburg Pincus XII (E&P) Partners-1, L.P.; and 101,589 by Warburg Pincus XII (E&P) Partners-2 Stronghold, LLC.

F2 · ownership.nature: Warburg Pincus & Company US, LLC ("Warburg Pincus") is the general partner of Warburg Pincus Partners II (US), L.P., which is the managing member of Warburg Pincus (E&P) Energy LLC and Warburg Pincus (E&P) XII LLC. Warburg Pincus (E&P) Energy LLC is the general partner of Warburg Pincus (E&P) Energy GP, L.P., which is the general partner of Warburg Pincus Energy (E&P)-A, L.P., WP Energy Stronghold Holdings, L.P., WP Energy Partners Stronghold Holdings, L.P., Warburg Pincus Energy (E&P) Partners-A, L.P., and Warburg Pincus Energy (E&P) Partners-B, L.P. Warburg Pincus Energy (E&P) Partners-B, L.P. is the managing member of Warburg Pincus Energy (E&P) Partners-B Stronghold, LLC. (continued in footnote 3)

F3 · ownership.nature: (continued from footnote 2) Warburg Pincus (E&P) XII LLC is the general partner of Warburg Pincus (E&P) XII, L.P., which is the general partner of Warburg Pincus XII (E&P) Partners-1, L.P., Warburg Pincus XII (E&P) Partners-2, L.P., WP XII Stronghold Holdings, L.P., WP XII (E&P) Partners (A), L.P., Warburg Pincus Private Equity (E&P) XII (A), L.P., Warburg Pincus Private Equity (E&P) XII-D (A), L.P., and Warburg Pincus Private Equity (E&P) XII-E (A), L.P. Warburg Pincus XII (E&P) Partners-2, L.P. is the managing member of Warburg Pincus XII (E&P) Partners-2 Stronghold, LLC (Warburg Pincus and the other entities listed in these footnotes 2 and 3, collectively, the "Warburg Entities").

F4 · ownership.nature: Each of the Warburg Entities disclaims beneficial ownership of the securities reported herein except to the extent of its pecuniary interest therein, and this report shall not be deemed an admission that the Warburg Entities are the beneficial owners of such securities for purposes of Section 16 or for any other purposes.

SEC source: 0000950170-24-113926 · ownership.xml · nonDerivative · entry 1

Warburg Pincus & Co US, LLC · CIK 0001635320 · 10% owner

Warburg Pincus Partners II (US), L.P. · CIK 0001658788 · 10% owner

Warburg Pincus (E&P) Energy LLC · CIK 0001774132 · 10% owner

Warburg Pincus (E&P) Energy GP, L.P. · CIK 0001774123 · 10% owner

Warburg Pincus Energy (E&P)-A, L.P. · CIK 0001774139 · 10% owner

WP ENERGY STRONGHOLD HOLDINGS, L.P. · CIK 0001945107 · 10% owner

WP ENERGY PARTNERS STRONGHOLD HOLDINGS, L.P. · CIK 0001945079 · 10% owner

Warburg Pincus Energy (E&P) Partners-B, L.P. · CIK 0001774137 · 10% owner

Warburg Pincus Energy (E&P) Partners-A, L.P. · CIK 0001774136 · 10% owner

WARBURG PINCUS ENERGY (E&P) PARTNERS-B STRONGHOLD, LLC · CIK 0001945097 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 35,520,643

F1 · balance_after: Following the reported transaction, the shares of common stock, par value $0.001 of the Issuer (the "Common Stock") are directly held as follows: 10,027,478 by Warburg Pincus Energy (E&P)-A, L.P.; 6,399,044 by WP Energy Stronghold Holdings, L.P.; 523,929 by WP Energy Partners Stronghold Holdings, L.P.; 605,627 by Warburg Pincus Energy (E&P) Partners-A, LP; 204,244 by Warburg Pincus Energy (E&P) Partners-B Stronghold, LLC; 6,490,509 by Warburg Pincus Private Equity (E&P) XII (A), L.P.; 155,758 by Warburg Pincus Private Equity (E&P) XII-D (A), L.P.; 235,679 by Warburg Pincus Private Equity (E&P) XII-E (A), L.P.; 424,472 by WP XII (E&P) Partners (A), L.P.; 9,260,054 by WP XII Stronghold Holdings, L.P.; 1,092,260 by Warburg Pincus XII (E&P) Partners-1, L.P.; and 101,589 by Warburg Pincus XII (E&P) Partners-2 Stronghold, LLC.

F2 · ownership.nature: Warburg Pincus & Company US, LLC ("Warburg Pincus") is the general partner of Warburg Pincus Partners II (US), L.P., which is the managing member of Warburg Pincus (E&P) Energy LLC and Warburg Pincus (E&P) XII LLC. Warburg Pincus (E&P) Energy LLC is the general partner of Warburg Pincus (E&P) Energy GP, L.P., which is the general partner of Warburg Pincus Energy (E&P)-A, L.P., WP Energy Stronghold Holdings, L.P., WP Energy Partners Stronghold Holdings, L.P., Warburg Pincus Energy (E&P) Partners-A, L.P., and Warburg Pincus Energy (E&P) Partners-B, L.P. Warburg Pincus Energy (E&P) Partners-B, L.P. is the managing member of Warburg Pincus Energy (E&P) Partners-B Stronghold, LLC. (continued in footnote 3)

F3 · ownership.nature: (continued from footnote 2) Warburg Pincus (E&P) XII LLC is the general partner of Warburg Pincus (E&P) XII, L.P., which is the general partner of Warburg Pincus XII (E&P) Partners-1, L.P., Warburg Pincus XII (E&P) Partners-2, L.P., WP XII Stronghold Holdings, L.P., WP XII (E&P) Partners (A), L.P., Warburg Pincus Private Equity (E&P) XII (A), L.P., Warburg Pincus Private Equity (E&P) XII-D (A), L.P., and Warburg Pincus Private Equity (E&P) XII-E (A), L.P. Warburg Pincus XII (E&P) Partners-2, L.P. is the managing member of Warburg Pincus XII (E&P) Partners-2 Stronghold, LLC (Warburg Pincus and the other entities listed in these footnotes 2 and 3, collectively, the "Warburg Entities").

F4 · ownership.nature: Each of the Warburg Entities disclaims beneficial ownership of the securities reported herein except to the extent of its pecuniary interest therein, and this report shall not be deemed an admission that the Warburg Entities are the beneficial owners of such securities for purposes of Section 16 or for any other purposes.

SEC source: 0001628280-25-017480 · wk-form5_1744401762.xml · nonDerivative · entry 1

Young Shawn D. · CIK 0002031294 · Senior VP, Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 188,616

F1 · shares: The transaction reported in this Form 5 represents shares of common stock withheld by the Registrant to cover tax withholding obligations of the reporting person arising from the settlement of a restricted stock unit award granted under the Registrant's long-term incentive plan which was not previously reported due to administrative error.

SEC source: 0000950170-24-108560 · ownership.xml · nonDerivative · entry 1

Warburg Pincus (E&P) XII LLC · CIK 0001912643 · 10% owner

Warburg Pincus (E&P) XII, L.P. · CIK 0001912644 · 10% owner

Warburg Pincus XII (E&P) Partners-2, L.P. · CIK 0001792220 · 10% owner

Warburg Pincus XII (E&P) Partners-1, L.P. · CIK 0001792222 · 10% owner

WP XII STRONGHOLD HOLDINGS, L.P. · CIK 0001945099 · 10% owner

WP XII (E&P) Partners (A), L.P. · CIK 0001792213 · 10% owner

Warburg Pincus Private Equity (E&P) XII-E (A), L.P. · CIK 0001792224 · 10% owner

Warburg Pincus Private Equity (E&P) XII-D (A), L.P. · CIK 0001792199 · 10% owner

Warburg Pincus Private Equity (E&P) XII (A), L.P. · CIK 0001792241 · 10% owner

WARBURG PINCUS XII (E&P) PARTNERS-2 STRONGHOLD, LLC · CIK 0001945090 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 39,920,643

F1 · shares: The securities sold and held after the reported transaction consist of shares of common stock, par value $0.001 of the Issuer (the "Common Stock") previously received by the reporting persons in a pro rata distribution for no consideration by Stronghold Energy II Operating LLC on March 6, 2024, the receipt of which was exempt from reporting pursuant to Rule 16a-9.

F1 · balance_after: The securities sold and held after the reported transaction consist of shares of common stock, par value $0.001 of the Issuer (the "Common Stock") previously received by the reporting persons in a pro rata distribution for no consideration by Stronghold Energy II Operating LLC on March 6, 2024, the receipt of which was exempt from reporting pursuant to Rule 16a-9.

F2 · balance_after: Following the reported transaction, the shares of Common Stock are directly held as follows: 11,269,598 by Warburg Pincus Energy (E&P)-A, L.P.; 7,191,704 by WP Energy Stronghold Holdings, L.P.; 588,829 by WP Energy Partners Stronghold Holdings, L.P.; 680,647 by Warburg Pincus Energy (E&P) Partners-A, LP; 229,544 by Warburg Pincus Energy (E&P) Partners-B Stronghold, LLC; 7,294,499 by Warburg Pincus Private Equity (E&P) XII (A), L.P.; 175,052 by Warburg Pincus Private Equity (E&P) XII-D (A), L.P.; 264,873 by Warburg Pincus Private Equity (E&P) XII-E (A), L.P.; 477,052 by WP XII (E&P) Partners (A), L.P.; 10,407,112 by WP XII Stronghold Holdings, L.P.; 1,227,560 by Warburg Pincus XII (E&P) Partners-1, L.P.; and 114,173 by Warburg Pincus XII (E&P) Partners-2 Stronghold, LLC.

F3 · ownership.nature: Warburg Pincus & Company US, LLC ("Warburg Pincus") is the general partner of Warburg Pincus Partners II (US), L.P., which is the managing member of Warburg Pincus (E&P) Energy LLC and Warburg Pincus (E&P) XII LLC. Warburg Pincus (E&P) Energy LLC is the general partner of Warburg Pincus (E&P) Energy GP, L.P., which is the general partner of Warburg Pincus Energy (E&P)-A, L.P., WP Energy Stronghold Holdings, L.P., WP Energy Partners Stronghold Holdings, L.P., Warburg Pincus Energy (E&P) Partners-A, L.P., and Warburg Pincus Energy (E&P) Partners-B, L.P. Warburg Pincus Energy (E&P) Partners-B, L.P. is the managing member of Warburg Pincus Energy (E&P) Partners-B Stronghold, LLC. (continued in footnote 4)

F4 · ownership.nature: (continued from footnote 3) Warburg Pincus (E&P) XII LLC is the general partner of Warburg Pincus (E&P) XII, L.P., which is the general partner of Warburg Pincus XII (E&P) Partners-1, L.P., Warburg Pincus XII (E&P) Partners-2, L.P., WP XII Stronghold Holdings, L.P., WP XII (E&P) Partners (A), L.P., Warburg Pincus Private Equity (E&P) XII (A), L.P., Warburg Pincus Private Equity (E&P) XII-D (A), L.P., and Warburg Pincus Private Equity (E&P) XII-E (A), L.P. Warburg Pincus XII (E&P) Partners-2, L.P. is the managing member of Warburg Pincus XII (E&P) Partners-2 Stronghold, LLC (Warburg Pincus and the other entities listed in these footnotes 2 and 3, collectively, the "Warburg Entities").

F5 · ownership.nature: Each of the Warburg Entities disclaims beneficial ownership of the securities reported herein except to the extent of its pecuniary interest therein, and this report shall not be deemed an admission that the Warburg Entities are the beneficial owners of such securities for purposes of Section 16 or for any other purposes.

SEC source: 0000950170-24-108562 · ownership.xml · nonDerivative · entry 1

Warburg Pincus & Co US, LLC · CIK 0001635320 · 10% owner

Warburg Pincus Partners II (US), L.P. · CIK 0001658788 · 10% owner

Warburg Pincus (E&P) Energy LLC · CIK 0001774132 · 10% owner

Warburg Pincus (E&P) Energy GP, L.P. · CIK 0001774123 · 10% owner

Warburg Pincus Energy (E&P)-A, L.P. · CIK 0001774139 · 10% owner

WP ENERGY STRONGHOLD HOLDINGS, L.P. · CIK 0001945107 · 10% owner

WP ENERGY PARTNERS STRONGHOLD HOLDINGS, L.P. · CIK 0001945079 · 10% owner

Warburg Pincus Energy (E&P) Partners-B, L.P. · CIK 0001774137 · 10% owner

Warburg Pincus Energy (E&P) Partners-A, L.P. · CIK 0001774136 · 10% owner

WARBURG PINCUS ENERGY (E&P) PARTNERS-B STRONGHOLD, LLC · CIK 0001945097 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 39,920,643

F1 · shares: The securities sold and held after the reported transaction consist of shares of common stock, par value $0.001 of the Issuer (the "Common Stock") previously received by the reporting persons in a pro rata distribution for no consideration by Stronghold Energy II Operating LLC on March 6, 2024, the receipt of which was exempt from reporting pursuant to Rule 16a-9.

F1 · balance_after: The securities sold and held after the reported transaction consist of shares of common stock, par value $0.001 of the Issuer (the "Common Stock") previously received by the reporting persons in a pro rata distribution for no consideration by Stronghold Energy II Operating LLC on March 6, 2024, the receipt of which was exempt from reporting pursuant to Rule 16a-9.

F2 · balance_after: Following the reported transaction, the shares of Common Stock are directly held as follows: 11,269,598 by Warburg Pincus Energy (E&P)-A, L.P.; 7,191,704 by WP Energy Stronghold Holdings, L.P.; 588,829 by WP Energy Partners Stronghold Holdings, L.P.; 680,647 by Warburg Pincus Energy (E&P) Partners-A, LP; 229,544 by Warburg Pincus Energy (E&P) Partners-B Stronghold, LLC; 7,294,499 by Warburg Pincus Private Equity (E&P) XII (A), L.P.; 175,052 by Warburg Pincus Private Equity (E&P) XII-D (A), L.P.; 264,873 by Warburg Pincus Private Equity (E&P) XII-E (A), L.P.; 477,052 by WP XII (E&P) Partners (A), L.P.; 10,407,112 by WP XII Stronghold Holdings, L.P.; 1,227,560 by Warburg Pincus XII (E&P) Partners-1, L.P.; and 114,173 by Warburg Pincus XII (E&P) Partners-2 Stronghold, LLC.

F3 · ownership.nature: Warburg Pincus & Company US, LLC ("Warburg Pincus") is the general partner of Warburg Pincus Partners II (US), L.P., which is the managing member of Warburg Pincus (E&P) Energy LLC and Warburg Pincus (E&P) XII LLC. Warburg Pincus (E&P) Energy LLC is the general partner of Warburg Pincus (E&P) Energy GP, L.P., which is the general partner of Warburg Pincus Energy (E&P)-A, L.P., WP Energy Stronghold Holdings, L.P., WP Energy Partners Stronghold Holdings, L.P., Warburg Pincus Energy (E&P) Partners-A, L.P., and Warburg Pincus Energy (E&P) Partners-B, L.P. Warburg Pincus Energy (E&P) Partners-B, L.P. is the managing member of Warburg Pincus Energy (E&P) Partners-B Stronghold, LLC. (continued in footnote 4)

F4 · ownership.nature: (continued from footnote 3) Warburg Pincus (E&P) XII LLC is the general partner of Warburg Pincus (E&P) XII, L.P., which is the general partner of Warburg Pincus XII (E&P) Partners-1, L.P., Warburg Pincus XII (E&P) Partners-2, L.P., WP XII Stronghold Holdings, L.P., WP XII (E&P) Partners (A), L.P., Warburg Pincus Private Equity (E&P) XII (A), L.P., Warburg Pincus Private Equity (E&P) XII-D (A), L.P., and Warburg Pincus Private Equity (E&P) XII-E (A), L.P. Warburg Pincus XII (E&P) Partners-2, L.P. is the managing member of Warburg Pincus XII (E&P) Partners-2 Stronghold, LLC (Warburg Pincus and the other entities listed in these footnotes 2 and 3, collectively, the "Warburg Entities").

F5 · ownership.nature: Each of the Warburg Entities disclaims beneficial ownership of the securities reported herein except to the extent of its pecuniary interest therein, and this report shall not be deemed an admission that the Warburg Entities are the beneficial owners of such securities for purposes of Section 16 or for any other purposes.

SEC source: 0001628280-24-037400 · wk-form4_1723754024.xml · nonDerivative · entry 1

FEINER PHILLIP B · CIK 0001434798 · VP, General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 76,600

F1 · price: This restricted stock unit award vests on an equal annual basis over a three-year period with the first vesting date on July 31, 2025, subject to the terms of the restricted stock unit agreement. Each restricted stock unit represents the contingent right to receive one share of common stock of the Issuer.

SEC source: 0001628280-24-028936 · wk-form4_1718756761.xml · nonDerivative · entry 1

Baghdati Marinos Christos · CIK 0001837145 · EVP Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 580,992

F1 · shares: Shares of Common Stock withheld by the Registrant to cover tax withholding obligations of the reporting person arising from the settlement of a restricted stock unit award granted under the Registrant's long-term incentive plan.

SEC source: 0001628280-24-028934 · wk-form4_1718756438.xml · nonDerivative · entry 1

McKinney Paul D. · CIK 0001622419 · Director · CEO and Chairman of the Board

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,090,282

F1 · shares: Shares of Common Stock withheld by the Registrant to cover tax withholding obligations of the reporting person arising from the settlement of a restricted stock unit award granted under the Registrant's long-term incentive plan.

SEC source: 0001628280-24-028932 · wk-form4_1718756330.xml · nonDerivative · entry 1

Brooks Stephen Donald · CIK 0001835016 · EVP-Land, Legal, HR, Marketing

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 580,992

F1 · shares: Shares of Common Stock withheld by the Registrant to cover tax withholding obligations of the reporting person arising from the settlement of a restricted stock unit award granted under the Registrant's long-term incentive plan.

SEC source: 0001628280-24-028930 · wk-form4_1718756206.xml · nonDerivative · entry 1

Thomas Travis · CIK 0001857253 · EVP, Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 543,619

F1 · shares: Shares of Common Stock withheld by the Registrant to cover tax withholding obligations of the reporting person arising from the settlement of a restricted stock unit award granted under the Registrant's long-term incentive plan.

SEC source: 0001628280-24-029133 · wk-form4_1718915556.xml · nonDerivative · entry 1

Dyes Alexander · CIK 0001837536 · EVP Engineering, Corp Strategy

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 610,130

F1 · shares: Shares of Common Stock withheld by the Registrant to cover tax withholding obligations of the reporting person arising from the settlement of a performance unit award granted under the Registrant's long-term incentive plan.

SEC source: 0001628280-24-024580 · wk-form4_1716328390.xml · nonDerivative · entry 1

Woodrum Clayton Eugene · CIK 0001359110 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 317,162

SEC source: 0001628280-24-010126 · wk-form4_1709947470.xml · nonDerivative · entry 2

McKinney Paul D. · CIK 0001622419 · Director · CEO and Chairman of the Board

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,113,556

F2 · shares: Shares of Common Stock withheld by the Registrant to cover tax withholding obligations of the reporting person arising from the settlement of a performance unit award granted under the Registrant's long-term incentive plan.

SEC source: 0001628280-24-010126 · wk-form4_1709947470.xml · nonDerivative · entry 1

McKinney Paul D. · CIK 0001622419 · Director · CEO and Chairman of the Board

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,256,008

F1 · price: Shares of Common Stock issued by the Registrant to the reporting person arising from the vesting and settlement of a performance unit award granted under the Registrant's long-term incentive plan.

SEC source: 0001628280-24-010113 · wk-form4_1709947340.xml · nonDerivative · entry 2

Dyes Alexander · CIK 0001837536 · EVP Engineering, Corp Strategy

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 615,949

F2 · shares: Shares of Common Stock withheld by the Registrant to cover tax withholding obligations of the reporting person arising from the settlement of a performance unit award granted under the Registrant's long-term incentive plan.

SEC source: 0001628280-24-010113 · wk-form4_1709947340.xml · nonDerivative · entry 1

Dyes Alexander · CIK 0001837536 · EVP Engineering, Corp Strategy

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 651,563

F1 · price: Shares of Common Stock issued by the Registrant to the reporting person arising from the vesting and settlement of a performance unit award granted under the Registrant's long-term incentive plan.

SEC source: 0001628280-24-010104 · wk-form4_1709947189.xml · nonDerivative · entry 2

Brooks Stephen Donald · CIK 0001835016 · EVP-Land, Legal, HR, Marketing

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 586,811

F2 · shares: Shares of Common Stock withheld by the Registrant to cover tax withholding obligations of the reporting person arising from the settlement of a performance unit award granted under the Registrant's long-term incentive plan.

SEC source: 0001628280-24-010104 · wk-form4_1709947189.xml · nonDerivative · entry 1

Brooks Stephen Donald · CIK 0001835016 · EVP-Land, Legal, HR, Marketing

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 622,425

F1 · price: Shares of Common Stock issued by the Registrant to the reporting person arising from the vesting and settlement of a performance unit award granted under the Registrant's long-term incentive plan.

SEC source: 0001628280-24-010101 · wk-form4_1709947135.xml · nonDerivative · entry 2

Baghdati Marinos Christos · CIK 0001837145 · EVP Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 586,811

F2 · shares: Shares of Common Stock withheld by the Registrant to cover tax withholding obligations of the reporting person arising from the settlement of a performance unit award granted under the Registrant's long-term incentive plan.

SEC source: 0001628280-24-010101 · wk-form4_1709947135.xml · nonDerivative · entry 1

Baghdati Marinos Christos · CIK 0001837145 · EVP Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 622,425

F1 · price: Shares of Common Stock issued by the Registrant to the reporting person arising from the vesting and settlement of a performance unit award granted under the Registrant's long-term incentive plan.

SEC source: 0001628280-24-010098 · wk-form4_1709947048.xml · nonDerivative · entry 2

Thomas Travis · CIK 0001857253 · EVP, Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 549,438

F2 · shares: Shares of Common Stock withheld by the Registrant to cover tax withholding obligations of the reporting person arising from the settlement of a performance unit award granted under the Registrant's long-term incentive plan.

SEC source: 0001628280-24-010098 · wk-form4_1709947048.xml · nonDerivative · entry 1

Thomas Travis · CIK 0001857253 · EVP, Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 585,052

F1 · price: Shares of Common Stock issued by the Registrant to the reporting person arising from the vesting and settlement of a performance unit award granted under the Registrant's long-term incentive plan.

SEC source: 0001104659-24-031462 · tm248089-1_4seq1.xml · nonDerivative · entry 1

STRONGHOLD ENERGY II OPERATING, LLC · CIK 0001944796 · 10% owner

STRONGHOLD ENERGY II INTERMEDIATE, LLC · CIK 0001944783 · 10% owner

STRONGHOLD ENERGY II HOLDINGS, LLC · CIK 0001944798 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 0

F1 · kind: The reported securities were distributed for no consideration by Stronghold Energy II Operating LLC ("Stronghold OpCo") to its members, entities affiliated with Warburg Pincus & Company US, LLC ("Warburg Pincus"), for which the receipt of such securities is exempt from Section 16 pursuant to Rule 16a-9.

F1 · shares: The reported securities were distributed for no consideration by Stronghold Energy II Operating LLC ("Stronghold OpCo") to its members, entities affiliated with Warburg Pincus & Company US, LLC ("Warburg Pincus"), for which the receipt of such securities is exempt from Section 16 pursuant to Rule 16a-9.

F1 · price: The reported securities were distributed for no consideration by Stronghold Energy II Operating LLC ("Stronghold OpCo") to its members, entities affiliated with Warburg Pincus & Company US, LLC ("Warburg Pincus"), for which the receipt of such securities is exempt from Section 16 pursuant to Rule 16a-9.

F2 · ownership.nature: Stronghold Energy II Intermediate, LLC ("Stronghold Intermediate") is the managing member of Stronghold OpCo, and Stronghold Energy II Holdings, LLC ("Stronghold Holdings" and, collectively with Stronghold OpCo and Stronghold Intermediate, the "Stronghold Entities") is the managing member of Stronghold Intermediate. In connection with the closing of the Purchase Agreement, Stronghold OpCo or, if applicable, its permitted transferees received the right to designate two directors to serve on the Issuer's Board, subject to certain approval rights of the Issuer. One of the designated directors, Roy Ben-Dor, is a managing director of Warburg Pincus.

SEC source: 0001628280-24-005652 · wk-form4_1708466967.xml · nonDerivative · entry 1

Baghdati Marinos Christos · CIK 0001837145 · EVP Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 476,172

F1 · shares: Shares of Common Stock withheld by the Registrant to cover tax withholding obligations of the reporting person arising from the settlement of a restricted stock unit award granted under the Registrant's long-term incentive plan.

SEC source: 0001628280-24-005646 · wk-form4_1708466833.xml · nonDerivative · entry 1

Brooks Stephen Donald · CIK 0001835016 · EVP-Land, Legal, HR, Marketing

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 476,172

F1 · shares: Shares of Common Stock withheld by the Registrant to cover tax withholding obligations of the reporting person arising from the settlement of a restricted stock unit award granted under the Registrant's long-term incentive plan.

SEC source: 0001628280-24-005643 · wk-form4_1708466740.xml · nonDerivative · entry 1

Dyes Alexander · CIK 0001837536 · EVP Engineering, Corp Strategy

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 505,310

F1 · shares: Shares of Common Stock withheld by the Registrant to cover tax withholding obligations of the reporting person arising from the settlement of a restricted stock unit award granted under the Registrant's long-term incentive plan.

SEC source: 0001628280-24-005639 · wk-form4_1708466644.xml · nonDerivative · entry 1

Thomas Travis · CIK 0001857253 · EVP, Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 438,799

F1 · shares: Shares of Common Stock withheld by the Registrant to cover tax withholding obligations of the reporting person arising from the settlement of a restricted stock unit award granted under the Registrant's long-term incentive plan.

SEC source: 0001628280-24-005636 · wk-form4_1708466525.xml · nonDerivative · entry 1

McKinney Paul D. · CIK 0001622419 · Director · CEO and Chairman of the Board

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,670,996

F1 · shares: Shares of Common Stock withheld by the Registrant to cover tax withholding obligations of the reporting person arising from the settlement of a restricted stock unit award granted under the Registrant's long-term incentive plan.

SEC source: 0001628280-24-005191 · wk-form4_1708051663.xml · nonDerivative · entry 1

Petrelli Anthony Benedict · CIK 0001354750 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 678,862

F1 · price: This restricted stock unit award vests on February 13, 2025, subject to the terms of the restricted stock unit agreement. Each restricted stock unit represents the contingent right to receive one share of common stock of the Issuer.

SEC source: 0001628280-24-005189 · wk-form4_1708051605.xml · nonDerivative · entry 1

HARRIS RICHARD E · CIK 0001244730 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 295,262

F1 · price: This restricted stock unit award vests on February 13, 2025, subject to the terms of the restricted stock unit agreement. Each restricted stock unit represents the contingent right to receive one share of common stock of the Issuer.

SEC source: 0001628280-24-005185 · wk-form4_1708051469.xml · nonDerivative · entry 1

CRUM JOHN A · CIK 0001240204 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 422,662

F1 · price: This restricted stock unit award vests on February 13, 2025, subject to the terms of the restricted stock unit agreement. Each restricted stock unit represents the contingent right to receive one share of common stock of the Issuer.

SEC source: 0001628280-24-005173 · wk-form4_1708048807.xml · nonDerivative · entry 1

MITCHELL THOMAS L · CIK 0001250243 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 372,662

F1 · price: This restricted stock unit award vests on February 13, 2025, subject to the terms of the restricted stock unit agreement. Each restricted stock unit represents the contingent right to receive one share of common stock of the Issuer.

SEC source: 0001628280-24-005164 · wk-form4_1708043620.xml · nonDerivative · entry 1

Woodrum Clayton Eugene · CIK 0001359110 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 324,662

F1 · price: This restricted stock unit award vests on February 13, 2025, subject to the terms of the restricted stock unit agreement. Each restricted stock unit represents the contingent right to receive one share of common stock of the Issuer.

SEC source: 0001628280-24-005195 · wk-form4_1708051778.xml · nonDerivative · entry 1

Baghdati Marinos Christos · CIK 0001837145 · EVP Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 485,076

F1 · price: This restricted stock unit award vests on an equal annual basis over a three-year period with the first vesting date on February 13, 2025, subject to the terms of the restricted stock unit agreement. Each restricted stock unit represents the contingent right to receive one share of common stock of the Issuer.

SEC source: 0001628280-24-005193 · wk-form4_1708051722.xml · nonDerivative · entry 1

Brooks Stephen Donald · CIK 0001835016 · EVP-Land, Legal, HR, Marketing

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 485,076

F1 · price: This restricted stock unit award vests on an equal annual basis over a three-year period with the first vesting date on February 13, 2025, subject to the terms of the restricted stock unit agreement. Each restricted stock unit represents the contingent right to receive one share of common stock of the Issuer.