Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
Checkbox not checked   Rule 13d-1(b)
Checkbox checked   Rule 13d-1(c)
Checkbox not checked   Rule 13d-1(d)






SCHEDULE 13G




Comment for Type of Reporting Person:   The reported percentage is calculated based on 206,544,770 shares of common stock ("Common Stock") outstanding as of August 6, 2025, as reported in the Issuer's Form 10-Q filed with the Securities and Exchange Commission ("SEC") on August 6, 2025.


SCHEDULE 13G




Comment for Type of Reporting Person:   The reported percentage is calculated based on 206,544,770 shares of Common Stock outstanding as of August 6, 2025, as reported in the Issuer's Form 10-Q filed with the SEC on August 6, 2025.


SCHEDULE 13G




Comment for Type of Reporting Person:   The reported percentage is calculated based on 206,544,770 shares of Common Stock outstanding as of August 6, 2025, as reported in the Issuer's Form 10-Q filed with the SEC on August 6, 2025.


SCHEDULE 13G




Comment for Type of Reporting Person:   The reported percentage is calculated based on 206,544,770 shares of Common Stock outstanding as of August 6, 2025, as reported in the Issuer's Form 10-Q filed with the SEC on August 6, 2025.


SCHEDULE 13G




Comment for Type of Reporting Person:   The reported percentage is calculated based on 206,544,770 shares of Common Stock outstanding as of August 6, 2025, as reported in the Issuer's Form 10-Q filed with the SEC on August 6, 2025.


SCHEDULE 13G




Comment for Type of Reporting Person:   The reported percentage is calculated based on 206,544,770 shares of Common Stock outstanding as of August 6, 2025, as reported in the Issuer's Form 10-Q filed with the SEC on August 6, 2025.


SCHEDULE 13G




Comment for Type of Reporting Person:   The reported percentage is calculated based on 206,544,770 shares of Common Stock outstanding as of August 6, 2025, as reported in the Issuer's Form 10-Q filed with the SEC on August 6, 2025.


SCHEDULE 13G




Comment for Type of Reporting Person:   The reported percentage is calculated based on 206,544,770 shares of Common Stock outstanding as of August 6, 2025, as reported in the Issuer's Form 10-Q filed with the SEC on August 6, 2025.


SCHEDULE 13G




Comment for Type of Reporting Person:   The reported percentage is calculated based on 206,544,770 shares of Common Stock outstanding as of August 6, 2025, as reported in the Issuer's Form 10-Q filed with the SEC on August 6, 2025.


SCHEDULE 13G




Comment for Type of Reporting Person:   The reported percentage is calculated based on 206,544,770 shares of Common Stock outstanding as of August 6, 2025, as reported in the Issuer's Form 10-Q filed with the SEC on August 6, 2025.


SCHEDULE 13G




Comment for Type of Reporting Person:   The reported percentage is calculated based on 206,544,770 shares of Common Stock outstanding as of August 6, 2025, as reported in the Issuer's Form 10-Q filed with the SEC on August 6, 2025.


SCHEDULE 13G




Comment for Type of Reporting Person:   The reported percentage is calculated based on 206,544,770 shares of Common Stock outstanding as of August 6, 2025, as reported in the Issuer's Form 10-Q filed with the SEC on August 6, 2025.


SCHEDULE 13G




Comment for Type of Reporting Person:   The reported percentage is calculated based on 206,544,770 shares of Common Stock outstanding as of August 6, 2025, as reported in the Issuer's Form 10-Q filed with the SEC on August 6, 2025.


SCHEDULE 13G




Comment for Type of Reporting Person:   The reported percentage is calculated based on 206,544,770 shares of Common Stock outstanding as of August 6, 2025, as reported in the Issuer's Form 10-Q filed with the SEC on August 6, 2025.


SCHEDULE 13G




Comment for Type of Reporting Person:   The reported percentage is calculated based on 206,544,770 shares of Common Stock outstanding as of August 6, 2025, as reported in the Issuer's Form 10-Q filed with the SEC on August 6, 2025.


SCHEDULE 13G




Comment for Type of Reporting Person:   The reported percentage is calculated based on 206,544,770 shares of Common Stock outstanding as of August 6, 2025, as reported in the Issuer's Form 10-Q filed with the SEC on August 6, 2025.


SCHEDULE 13G




Comment for Type of Reporting Person:   The reported percentage is calculated based on 206,544,770 shares of Common Stock outstanding as of August 6, 2025, as reported in the Issuer's Form 10-Q filed with the SEC on August 6, 2025.


SCHEDULE 13G




Comment for Type of Reporting Person:   The reported percentage is calculated based on 206,544,770 shares of Common Stock outstanding as of August 6, 2025, as reported in the Issuer's Form 10-Q filed with the SEC on August 6, 2025.


SCHEDULE 13G




Comment for Type of Reporting Person:   The reported percentage is calculated based on 206,544,770 shares of Common Stock outstanding as of August 6, 2025, as reported in the Issuer's Form 10-Q filed with the SEC on August 6, 2025.


SCHEDULE 13G




Comment for Type of Reporting Person:   The reported percentage is calculated based on 206,544,770 shares of Common Stock outstanding as of August 6, 2025, as reported in the Issuer's Form 10-Q filed with the SEC on August 6, 2025.


SCHEDULE 13G




Comment for Type of Reporting Person:   The reported percentage is calculated based on 206,544,770 shares of Common Stock outstanding as of August 6, 2025, as reported in the Issuer's Form 10-Q filed with the SEC on August 6, 2025.


SCHEDULE 13G




Comment for Type of Reporting Person:   The reported percentage is calculated based on 206,544,770 shares of Common Stock outstanding as of August 6, 2025, as reported in the Issuer's Form 10-Q filed with the SEC on August 6, 2025.


SCHEDULE 13G




Comment for Type of Reporting Person:   The reported percentage is calculated based on 206,544,770 shares of Common Stock outstanding as of August 6, 2025, as reported in the Issuer's Form 10-Q filed with the SEC on August 6, 2025.


SCHEDULE 13G



 
Warburg Pincus & Company US, LLC
 
Signature:/s/ Harsha Marti
Name/Title:Harsha Marti, Authorized Signatory
Date:08/12/2025
 
Warburg Pincus Partners II (US), L.P.
 
Signature:/s/ Harsha Marti
Name/Title:Harsha Marti, Authorized Signatory
Date:08/12/2025
 
Warburg Pincus (E&P) Energy LLC
 
Signature:/s/ Harsha Marti
Name/Title:Harsha Marti, Authorized Signatory
Date:08/12/2025
 
Warburg Pincus (E&P) Energy GP, L.P.
 
Signature:/s/ Harsha Marti
Name/Title:Harsha Marti, Authorized Signatory
Date:08/12/2025
 
Warburg Pincus Energy (E&P)-A, L.P.
 
Signature:/s/ Harsha Marti
Name/Title:Harsha Marti, Authorized Signatory
Date:08/12/2025
 
WP Energy Stronghold Holdings, L.P.
 
Signature:/s/ Harsha Marti
Name/Title:Harsha Marti, Authorized Signatory
Date:08/12/2025
 
WP Energy Partners Stronghold Holdings, L.P.
 
Signature:/s/ Harsha Marti
Name/Title:Harsha Marti, Authorized Signatory
Date:08/12/2025
 
Warburg Pincus Energy (E&P) Partners-B, L.P.
 
Signature:/s/ Harsha Marti
Name/Title:Harsha Marti, Authorized Signatory
Date:08/12/2025
 
Warburg Pincus Energy (E&P) Partners-A, L.P.
 
Signature:/s/ Harsha Marti
Name/Title:Harsha Marti, Authorized Signatory
Date:08/12/2025
 
Warburg Pincus Energy (E&P) Partners-B Stronghold, LLC
 
Signature:/s/ Harsha Marti
Name/Title:Harsha Marti, Authorized Signatory
Date:08/12/2025
 
Warburg Pincus (E&P) XII LLC
 
Signature:/s/ Harsha Marti /s/ Harsha Marti
Name/Title:Harsha Marti, Authorized Signatory
Date:08/12/2025
 
Warburg Pincus (E&P) XII, L.P.
 
Signature:/s/ Harsha Marti
Name/Title:Harsha Marti, Authorized Signatory
Date:08/12/2025
 
Warburg Pincus XII (E&P) Partners-2, L.P.
 
Signature:/s/ Harsha Marti
Name/Title:Harsha Marti, Authorized Signatory
Date:08/12/2025
 
Warburg Pincus XII (E&P) Partners-1, L.P.
 
Signature:/s/ Harsha Marti
Name/Title:Harsha Marti, Authorized Signatory
Date:08/12/2025
 
WP XII Stronghold Holdings, L.P.
 
Signature:/s/ Harsha Marti
Name/Title:Harsha Marti, Authorized Signatory
Date:08/12/2025
 
WP XII (E&P) Partners (A), L.P.
 
Signature:/s/ Harsha Marti
Name/Title:Harsha Marti, Authorized Signatory
Date:08/12/2025
 
WP XII (E&P) Partners (B), L.P.
 
Signature:/s/ Harsha Marti
Name/Title:Harsha Marti, Authorized Signatory
Date:08/12/2025
 
Warburg Pincus Private Equity (E&P) XII-E (A), L.P.
 
Signature:/s/ Harsha Marti
Name/Title:Harsha Marti, Authorized Signatory
Date:08/12/2025
 
Warburg Pincus Private Equity (E&P) XII-D (A), L.P.
 
Signature:/s/ Harsha Marti
Name/Title:Harsha Marti, Authorized Signatory
Date:08/12/2025
 
Warburg Pincus Private Equity (E&P) XII (A), L.P.
 
Signature:/s/ Harsha Marti
Name/Title:Harsha Marti, Authorized Signatory
Date:08/12/2025
 
Warburg Pincus XII (E&P) Partners-2 Stronghold, LLC
 
Signature:/s/ Harsha Marti
Name/Title:Harsha Marti, Authorized Signatory
Date:08/12/2025
 
Warburg Pincus & Co.
 
Signature:/s/ Harsha Marti
Name/Title:Harsha Marti, Authorized Signatory
Date:08/12/2025
 
Warburg Pincus LLC
 
Signature:/s/ Harsha Marti
Name/Title:Harsha Marti, Authorized Signatory
Date:08/12/2025

Comments accompanying signature:   Exhibit 24.1 Joint Filing Agreement, by and among the Reporting Persons, incorporated by reference to Exhibit 24.1 to the Schedule 13G dated May 9, 2025.