NINE

SEC source: 0000950170-25-017991 · ownership.xml · nonDerivative · entry 2

MONROE WILLIAM · CIK 0001878229 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,603,000

F2 · price: The reported price is the weighted average purchase price for the transactions reported on that line. Purchases were made at a purchase price of between $1.1850-$1.2437. The Reporting Person will provide to the Staff, the issuer, or a security holder full information regarding the number of shares purchased or sold at each separate price upon request.

F4 · balance_after: The filing of this Form 4/A is to correct the number of shares of Common Stock beneficially held by the Reporting Person reported in the Form 4 filed on November 22, 2024, which error was discovered by the Reporting Person on February 10, 2025.

SEC source: 0001085550-24-000003 · wk-form4_1732052027.xml · nonDerivative · entry 6

SCF Partners, Inc. · CIK 0001085550 · Member of Group

SCF-VII, L.P. · CIK 0001546824 · Member of Group

SCF-VII, G.P., Limited Partnership · CIK 0001546823 · Member of Group

SCF-VII(A), L.P. · CIK 0001672213 · Member of Group

SCF-VII(A), G.P., Limited Partnership · CIK 0001721708 · Member of Group

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By SCF-VII(A), L.P.

Disclosed balance after: 1,363,992

F1 · ownership.nature: SCF Partners, Inc. (formerly named LE Simmons & Associates Inc), a Delaware corporation (SCFP), manages each of SCFVII, GP Limited Partnership (SCFVIIGP) and SCF-VII(A), GP Limited Partnership (SCFVIIAGP), each of which are Delaware limited partnerships. Additionally, SCFVIIGP is the sole general partner of SCFVII, LP (SCFVII), and SCF-VIIAGP is the sole general partner of SCF-VII(A), LP (SCFVIIA). Collectively, SCFP, SCFVIIGP, SCFVIIAGP, SCFVII and SCFVIIA are the reporting entities. Based on the reporting person's affiliation with the reporting entities, SCFP may be deemed to beneficially own all of the shares of common stock of the registrant beneficially owned or deemed to be beneficially owned by the reporting entities.

SEC source: 0001085550-24-000003 · wk-form4_1732052027.xml · nonDerivative · entry 3

SCF Partners, Inc. · CIK 0001085550 · Member of Group

SCF-VII, L.P. · CIK 0001546824 · Member of Group

SCF-VII, G.P., Limited Partnership · CIK 0001546823 · Member of Group

SCF-VII(A), L.P. · CIK 0001672213 · Member of Group

SCF-VII(A), G.P., Limited Partnership · CIK 0001721708 · Member of Group

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By SCF-VII, L.P.

Disclosed balance after: 6,579,698

F1 · ownership.nature: SCF Partners, Inc. (formerly named LE Simmons & Associates Inc), a Delaware corporation (SCFP), manages each of SCFVII, GP Limited Partnership (SCFVIIGP) and SCF-VII(A), GP Limited Partnership (SCFVIIAGP), each of which are Delaware limited partnerships. Additionally, SCFVIIGP is the sole general partner of SCFVII, LP (SCFVII), and SCF-VIIAGP is the sole general partner of SCF-VII(A), LP (SCFVIIA). Collectively, SCFP, SCFVIIGP, SCFVIIAGP, SCFVII and SCFVIIA are the reporting entities. Based on the reporting person's affiliation with the reporting entities, SCFP may be deemed to beneficially own all of the shares of common stock of the registrant beneficially owned or deemed to be beneficially owned by the reporting entities.

SEC source: 0000950170-24-130329 · ownership.xml · nonDerivative · entry 1

MONROE WILLIAM · CIK 0001878229 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,335,000

F1 · price: The reported price is the weighted average purchase price for the transactions reported on that line. Purchases were made at a purchase price of between $1.1506-$1.2388. The Reporting Person will provide to the Staff, the issuer, or a security holder full information regarding the number of shares purchased or sold at each separate price upon request.

SEC source: 0000950170-25-017991 · ownership.xml · nonDerivative · entry 1

MONROE WILLIAM · CIK 0001878229 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,338,000

F1 · price: The reported price is the weighted average purchase price for the transactions reported on that line. Purchases were made at a purchase price of between $1.1506-$1.2388. The Reporting Person will provide to the Staff, the issuer, or a security holder full information regarding the number of shares purchased or sold at each separate price upon request.

F4 · balance_after: The filing of this Form 4/A is to correct the number of shares of Common Stock beneficially held by the Reporting Person reported in the Form 4 filed on November 22, 2024, which error was discovered by the Reporting Person on February 10, 2025.

SEC source: 0001085550-24-000003 · wk-form4_1732052027.xml · nonDerivative · entry 5

SCF Partners, Inc. · CIK 0001085550 · Member of Group

SCF-VII, L.P. · CIK 0001546824 · Member of Group

SCF-VII, G.P., Limited Partnership · CIK 0001546823 · Member of Group

SCF-VII(A), L.P. · CIK 0001672213 · Member of Group

SCF-VII(A), G.P., Limited Partnership · CIK 0001721708 · Member of Group

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By SCF-VII(A), L.P.

Disclosed balance after: 1,433,770

F1 · ownership.nature: SCF Partners, Inc. (formerly named LE Simmons & Associates Inc), a Delaware corporation (SCFP), manages each of SCFVII, GP Limited Partnership (SCFVIIGP) and SCF-VII(A), GP Limited Partnership (SCFVIIAGP), each of which are Delaware limited partnerships. Additionally, SCFVIIGP is the sole general partner of SCFVII, LP (SCFVII), and SCF-VIIAGP is the sole general partner of SCF-VII(A), LP (SCFVIIA). Collectively, SCFP, SCFVIIGP, SCFVIIAGP, SCFVII and SCFVIIA are the reporting entities. Based on the reporting person's affiliation with the reporting entities, SCFP may be deemed to beneficially own all of the shares of common stock of the registrant beneficially owned or deemed to be beneficially owned by the reporting entities.

SEC source: 0001085550-24-000003 · wk-form4_1732052027.xml · nonDerivative · entry 2

SCF Partners, Inc. · CIK 0001085550 · Member of Group

SCF-VII, L.P. · CIK 0001546824 · Member of Group

SCF-VII, G.P., Limited Partnership · CIK 0001546823 · Member of Group

SCF-VII(A), L.P. · CIK 0001672213 · Member of Group

SCF-VII(A), G.P., Limited Partnership · CIK 0001721708 · Member of Group

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By SCF-VII, L.P.

Disclosed balance after: 6,920,379

F1 · ownership.nature: SCF Partners, Inc. (formerly named LE Simmons & Associates Inc), a Delaware corporation (SCFP), manages each of SCFVII, GP Limited Partnership (SCFVIIGP) and SCF-VII(A), GP Limited Partnership (SCFVIIAGP), each of which are Delaware limited partnerships. Additionally, SCFVIIGP is the sole general partner of SCFVII, LP (SCFVII), and SCF-VIIAGP is the sole general partner of SCF-VII(A), LP (SCFVIIA). Collectively, SCFP, SCFVIIGP, SCFVIIAGP, SCFVII and SCFVIIA are the reporting entities. Based on the reporting person's affiliation with the reporting entities, SCFP may be deemed to beneficially own all of the shares of common stock of the registrant beneficially owned or deemed to be beneficially owned by the reporting entities.

SEC source: 0001085550-24-000003 · wk-form4_1732052027.xml · nonDerivative · entry 4

SCF Partners, Inc. · CIK 0001085550 · Member of Group

SCF-VII, L.P. · CIK 0001546824 · Member of Group

SCF-VII, G.P., Limited Partnership · CIK 0001546823 · Member of Group

SCF-VII(A), L.P. · CIK 0001672213 · Member of Group

SCF-VII(A), G.P., Limited Partnership · CIK 0001721708 · Member of Group

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By SCF-VII(A), L.P.

Disclosed balance after: 1,491,492

F1 · ownership.nature: SCF Partners, Inc. (formerly named LE Simmons & Associates Inc), a Delaware corporation (SCFP), manages each of SCFVII, GP Limited Partnership (SCFVIIGP) and SCF-VII(A), GP Limited Partnership (SCFVIIAGP), each of which are Delaware limited partnerships. Additionally, SCFVIIGP is the sole general partner of SCFVII, LP (SCFVII), and SCF-VIIAGP is the sole general partner of SCF-VII(A), LP (SCFVIIA). Collectively, SCFP, SCFVIIGP, SCFVIIAGP, SCFVII and SCFVIIA are the reporting entities. Based on the reporting person's affiliation with the reporting entities, SCFP may be deemed to beneficially own all of the shares of common stock of the registrant beneficially owned or deemed to be beneficially owned by the reporting entities.

SEC source: 0001085550-24-000003 · wk-form4_1732052027.xml · nonDerivative · entry 1

SCF Partners, Inc. · CIK 0001085550 · Member of Group

SCF-VII, L.P. · CIK 0001546824 · Member of Group

SCF-VII, G.P., Limited Partnership · CIK 0001546823 · Member of Group

SCF-VII(A), L.P. · CIK 0001672213 · Member of Group

SCF-VII(A), G.P., Limited Partnership · CIK 0001721708 · Member of Group

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By SCF-VII, L.P.

Disclosed balance after: 7,202,198

F1 · ownership.nature: SCF Partners, Inc. (formerly named LE Simmons & Associates Inc), a Delaware corporation (SCFP), manages each of SCFVII, GP Limited Partnership (SCFVIIGP) and SCF-VII(A), GP Limited Partnership (SCFVIIAGP), each of which are Delaware limited partnerships. Additionally, SCFVIIGP is the sole general partner of SCFVII, LP (SCFVII), and SCF-VIIAGP is the sole general partner of SCF-VII(A), LP (SCFVIIA). Collectively, SCFP, SCFVIIGP, SCFVIIAGP, SCFVII and SCFVIIA are the reporting entities. Based on the reporting person's affiliation with the reporting entities, SCFP may be deemed to beneficially own all of the shares of common stock of the registrant beneficially owned or deemed to be beneficially owned by the reporting entities.

SEC source: 0001085550-24-000002 · wk-form4_1731619109.xml · nonDerivative · entry 6

SCF Partners, Inc. · CIK 0001085550 · Member of Group

SCF-VII, L.P. · CIK 0001546824 · Member of Group

SCF-VII, G.P., Limited Partnership · CIK 0001546823 · Member of Group

SCF-VII(A), L.P. · CIK 0001672213 · Member of Group

SCF-VII(A), G.P., Limited Partnership · CIK 0001721708 · Member of Group

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By SCF-VII(A), L.P.

Disclosed balance after: 1,492,254

F1 · ownership.nature: SCF Partners, Inc. (formerly named LE Simmons & Associates Inc), a Delaware corporation (SCFP), manages each of SCFVII, GP Limited Partnership (SCFVIIGP) and SCF-VII(A), GP Limited Partnership (SCFVIIAGP), each of which are Delaware limited partnerships. Additionally, SCFVIIGP is the sole general partner of SCFVII, LP (SCFVII), and SCF-VIIAGP is the sole general partner of SCF-VII(A), LP (SCFVIIA). Collectively, SCFP, SCFVIIGP, SCFVIIAGP, SCFVII and SCFVIIA are the reporting entities. Based on the reporting person's affiliation with the reporting entities, SCFP may be deemed to beneficially own all of the shares of common stock of the registrant beneficially owned or deemed to be beneficially owned by the reporting entities.

SEC source: 0001085550-24-000002 · wk-form4_1731619109.xml · nonDerivative · entry 3

SCF Partners, Inc. · CIK 0001085550 · Member of Group

SCF-VII, L.P. · CIK 0001546824 · Member of Group

SCF-VII, G.P., Limited Partnership · CIK 0001546823 · Member of Group

SCF-VII(A), L.P. · CIK 0001672213 · Member of Group

SCF-VII(A), G.P., Limited Partnership · CIK 0001721708 · Member of Group

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By SCF-VII, L.P.

Disclosed balance after: 7,205,922

F1 · ownership.nature: SCF Partners, Inc. (formerly named LE Simmons & Associates Inc), a Delaware corporation (SCFP), manages each of SCFVII, GP Limited Partnership (SCFVIIGP) and SCF-VII(A), GP Limited Partnership (SCFVIIAGP), each of which are Delaware limited partnerships. Additionally, SCFVIIGP is the sole general partner of SCFVII, LP (SCFVII), and SCF-VIIAGP is the sole general partner of SCF-VII(A), LP (SCFVIIA). Collectively, SCFP, SCFVIIGP, SCFVIIAGP, SCFVII and SCFVIIA are the reporting entities. Based on the reporting person's affiliation with the reporting entities, SCFP may be deemed to beneficially own all of the shares of common stock of the registrant beneficially owned or deemed to be beneficially owned by the reporting entities.

SEC source: 0001085550-24-000002 · wk-form4_1731619109.xml · nonDerivative · entry 5

SCF Partners, Inc. · CIK 0001085550 · Member of Group

SCF-VII, L.P. · CIK 0001546824 · Member of Group

SCF-VII, G.P., Limited Partnership · CIK 0001546823 · Member of Group

SCF-VII(A), L.P. · CIK 0001672213 · Member of Group

SCF-VII(A), G.P., Limited Partnership · CIK 0001721708 · Member of Group

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By SCF-VII(A), L.P.

Disclosed balance after: 1,526,793

F1 · ownership.nature: SCF Partners, Inc. (formerly named LE Simmons & Associates Inc), a Delaware corporation (SCFP), manages each of SCFVII, GP Limited Partnership (SCFVIIGP) and SCF-VII(A), GP Limited Partnership (SCFVIIAGP), each of which are Delaware limited partnerships. Additionally, SCFVIIGP is the sole general partner of SCFVII, LP (SCFVII), and SCF-VIIAGP is the sole general partner of SCF-VII(A), LP (SCFVIIA). Collectively, SCFP, SCFVIIGP, SCFVIIAGP, SCFVII and SCFVIIA are the reporting entities. Based on the reporting person's affiliation with the reporting entities, SCFP may be deemed to beneficially own all of the shares of common stock of the registrant beneficially owned or deemed to be beneficially owned by the reporting entities.

SEC source: 0001085550-24-000002 · wk-form4_1731619109.xml · nonDerivative · entry 2

SCF Partners, Inc. · CIK 0001085550 · Member of Group

SCF-VII, L.P. · CIK 0001546824 · Member of Group

SCF-VII, G.P., Limited Partnership · CIK 0001546823 · Member of Group

SCF-VII(A), L.P. · CIK 0001672213 · Member of Group

SCF-VII(A), G.P., Limited Partnership · CIK 0001721708 · Member of Group

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By SCF-VII, L.P.

Disclosed balance after: 7,374,558

F1 · ownership.nature: SCF Partners, Inc. (formerly named LE Simmons & Associates Inc), a Delaware corporation (SCFP), manages each of SCFVII, GP Limited Partnership (SCFVIIGP) and SCF-VII(A), GP Limited Partnership (SCFVIIAGP), each of which are Delaware limited partnerships. Additionally, SCFVIIGP is the sole general partner of SCFVII, LP (SCFVII), and SCF-VIIAGP is the sole general partner of SCF-VII(A), LP (SCFVIIA). Collectively, SCFP, SCFVIIGP, SCFVIIAGP, SCFVII and SCFVIIA are the reporting entities. Based on the reporting person's affiliation with the reporting entities, SCFP may be deemed to beneficially own all of the shares of common stock of the registrant beneficially owned or deemed to be beneficially owned by the reporting entities.

SEC source: 0001085550-24-000002 · wk-form4_1731619109.xml · nonDerivative · entry 4

SCF Partners, Inc. · CIK 0001085550 · Member of Group

SCF-VII, L.P. · CIK 0001546824 · Member of Group

SCF-VII, G.P., Limited Partnership · CIK 0001546823 · Member of Group

SCF-VII(A), L.P. · CIK 0001672213 · Member of Group

SCF-VII(A), G.P., Limited Partnership · CIK 0001721708 · Member of Group

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By SCF-VII(A), L.P.

Disclosed balance after: 1,554,788

F1 · ownership.nature: SCF Partners, Inc. (formerly named LE Simmons & Associates Inc), a Delaware corporation (SCFP), manages each of SCFVII, GP Limited Partnership (SCFVIIGP) and SCF-VII(A), GP Limited Partnership (SCFVIIAGP), each of which are Delaware limited partnerships. Additionally, SCFVIIGP is the sole general partner of SCFVII, LP (SCFVII), and SCF-VIIAGP is the sole general partner of SCF-VII(A), LP (SCFVIIA). Collectively, SCFP, SCFVIIGP, SCFVIIAGP, SCFVII and SCFVIIA are the reporting entities. Based on the reporting person's affiliation with the reporting entities, SCFP may be deemed to beneficially own all of the shares of common stock of the registrant beneficially owned or deemed to be beneficially owned by the reporting entities.

SEC source: 0001085550-24-000002 · wk-form4_1731619109.xml · nonDerivative · entry 1

SCF Partners, Inc. · CIK 0001085550 · Member of Group

SCF-VII, L.P. · CIK 0001546824 · Member of Group

SCF-VII, G.P., Limited Partnership · CIK 0001546823 · Member of Group

SCF-VII(A), L.P. · CIK 0001672213 · Member of Group

SCF-VII(A), G.P., Limited Partnership · CIK 0001721708 · Member of Group

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By SCF-VII, L.P.

Disclosed balance after: 7,511,234

F1 · ownership.nature: SCF Partners, Inc. (formerly named LE Simmons & Associates Inc), a Delaware corporation (SCFP), manages each of SCFVII, GP Limited Partnership (SCFVIIGP) and SCF-VII(A), GP Limited Partnership (SCFVIIAGP), each of which are Delaware limited partnerships. Additionally, SCFVIIGP is the sole general partner of SCFVII, LP (SCFVII), and SCF-VIIAGP is the sole general partner of SCF-VII(A), LP (SCFVIIA). Collectively, SCFP, SCFVIIGP, SCFVIIAGP, SCFVII and SCFVIIA are the reporting entities. Based on the reporting person's affiliation with the reporting entities, SCFP may be deemed to beneficially own all of the shares of common stock of the registrant beneficially owned or deemed to be beneficially owned by the reporting entities.

SEC source: 0000950170-24-123650 · ownership.xml · nonDerivative · entry 2

Fox Ann G · CIK 0001727661 · Director · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 561,006

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.015 to $1.310, inclusive. The reporting person undertakes to provide to Nine Energy Service, Inc., any securities holder of Nine Energy Service, Inc., or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0000950170-24-123646 · ownership.xml · nonDerivative · entry 1

MOORE THEODORE R. · CIK 0001526088 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 154,160

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $0.943 to $1.003, inclusive. The reporting person undertakes to provide to Nine Energy Service, Inc., any securities holder of Nine Energy Service, Inc., or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0000950170-24-123650 · ownership.xml · nonDerivative · entry 1

Fox Ann G · CIK 0001727661 · Director · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 697,935

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.000 to $1.008, inclusive. The reporting person undertakes to provide to Nine Energy Service, Inc., any securities holder of Nine Energy Service, Inc., or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0000950170-24-123647 · ownership.xml · nonDerivative · entry 1

Crombie David · CIK 0001727542 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 238,077

SEC source: 0000950170-24-096500 · ownership.xml · nonDerivative · entry 1

Sirkes Guy · CIK 0001808492 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 192,346

F1 · shares: The sale reported on this Form 4 reflects the non-discretionary sale of shares of common stock of Nine Energy Service, Inc. by the reporting person necessary to satisfy tax withholding obligations in connection with the vesting of the time-based restricted stock award granted on August 9, 2021.

F2 · balance_after: Reflects the transfer of 4,144 shares of common stock by the reporting person to his ex-spouse since the date of the reporting person's last ownership report.

SEC source: 0000950170-24-096510 · ownership.xml · nonDerivative · entry 1

Luz S. Brett · CIK 0001715489 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 99,269

F1 · shares: The sale reported on this Form 4 reflects the non-discretionary sale of shares of common stock of Nine Energy Service, Inc. by the reporting person necessary to satisfy tax withholding obligations in connection with the vesting of the time-based restricted stock award granted on August 9, 2021.

SEC source: 0000950170-24-096506 · ownership.xml · nonDerivative · entry 1

MOORE THEODORE R. · CIK 0001526088 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 180,936

F1 · shares: The sale reported on this Form 4 reflects the non-discretionary sale of shares of common stock of Nine Energy Service, Inc. by the reporting person necessary to satisfy tax withholding obligations in connection with the vesting of the time-based restricted stock award granted on August 9, 2021.

F2 · balance_after: Reflects the transfer of 189 shares of common stock by the reporting person to his ex-spouse since the date of the reporting person's last ownership report.

SEC source: 0000950170-24-096511 · ownership.xml · nonDerivative · entry 1

Crombie David · CIK 0001727542 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 286,799

F1 · shares: The sale reported on this Form 4 reflects the non-discretionary sale of shares of common stock of Nine Energy Service, Inc. by the reporting person necessary to satisfy tax withholding obligations in connection with the vesting of the time-based restricted stock award granted on August 9, 2021.

SEC source: 0000950170-24-096498 · ownership.xml · nonDerivative · entry 1

Fox Ann G · CIK 0001727661 · Director · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 758,293

F1 · shares: The sale reported on this Form 4 reflects the non-discretionary sale of shares of common stock of Nine Energy Service, Inc. by the reporting person necessary to satisfy tax withholding obligations in connection with the vesting of the time-based restricted stock award granted on August 9, 2021.

SEC source: 0000950170-24-095004 · ownership.xml · nonDerivative · entry 1

MOORE THEODORE R. · CIK 0001526088 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 190,719

SEC source: 0000950170-24-094996 · ownership.xml · nonDerivative · entry 1

Crombie David · CIK 0001727542 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 304,119

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.41 to $1.50, inclusive. The reporting person undertakes to provide to Nine Energy Service, Inc., any securities holder of Nine Energy Service, Inc., or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0000950170-24-093100 · ownership.xml · nonDerivative · entry 1

MONROE WILLIAM · CIK 0001878229 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,900,000

F1 · price: The reported price is the weighted average purchase price for the transactions reported on that line. Purchases were made at a purchase price of between $1.4823-$1.7061. The Reporting Person will provide to the Staff, the issuer, or a security holder full information regarding the number of shares purchased or sold at each separate price upon request.

SEC source: 0000950170-25-017988 · ownership.xml · nonDerivative · entry 1

MONROE WILLIAM · CIK 0001878229 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,903,000

F1 · price: The reported price is the weighted average purchase price for the transactions reported on that line. Purchases were made at a purchase price of between $1.4823-$1.7061. The Reporting Person will provide to the Staff, the issuer, or a security holder full information regarding the number of shares purchased or sold at each separate price upon request.

F2 · balance_after: The filing of this Form 4/A is to correct the number of shares of Common Stock beneficially held by the Reporting Person reported in the Form 4 filed on August 7, 2024, which error was discovered by the Reporting Person on February 10, 2025.

SEC source: 0000950170-24-077213 · ownership.xml · nonDerivative · entry 4

MONROE WILLIAM · CIK 0001878229 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,429,638

F4 · price: The reported price is the weighted average purchase price for the transactions reported on that line. Purchases were made at a purchase price of between $1.455-$1.48. The Reporting Person will provide to the Staff, the issuer, or a security holder full information regarding the number of shares purchased or sold at each separate price upon request.

SEC source: 0000950170-24-077213 · ownership.xml · nonDerivative · entry 3

MONROE WILLIAM · CIK 0001878229 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,404,638

F3 · price: The reported price is the weighted average purchase price for the transactions reported on that line. Purchases were made at a purchase price of between $1.375-$1.52. The Reporting Person will provide to the Staff, the issuer, or a security holder full information regarding the number of shares purchased or sold at each separate price upon request.

SEC source: 0000950170-24-077213 · ownership.xml · nonDerivative · entry 2

MONROE WILLIAM · CIK 0001878229 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,152,639

F2 · price: The reported price is the weighted average purchase price for the transactions reported on that line. Purchases were made at a purchase price of between $1.44-$1.48. The Reporting Person will provide to the Staff, the issuer, or a security holder full information regarding the number of shares purchased or sold at each separate price upon request.

SEC source: 0000950170-24-077213 · ownership.xml · derivative · entry 8

MONROE WILLIAM · CIK 0001878229 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 606

Underlying: Common Stock, par value $0.01 per share · 200 shares

Expires 2025-01-17

F7 · price: The reported price is the weighted average purchase price for the transactions reported on that line. Purchases were made at a purchase price of between $0.50-$0.55. The Reporting Person will provide to the Staff, the issuer, or a security holder full information regarding the number of shares purchased or sold at each separate price upon request.

SEC source: 0000950170-24-077213 · ownership.xml · derivative · entry 7

MONROE WILLIAM · CIK 0001878229 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,696

Underlying: Common Stock, par value $0.01 per share · 200 shares

Expires 2025-01-17

SEC source: 0000950170-24-077213 · ownership.xml · derivative · entry 6

MONROE WILLIAM · CIK 0001878229 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 604

Underlying: Common Stock, par value $0.01 per share · 30,200 shares

Expires 2025-01-17

F6 · price: The reported price is the weighted average purchase price for the transactions reported on that line. Purchases were made at a purchase price of between $0.45-$0.60. The Reporting Person will provide to the Staff, the issuer, or a security holder full information regarding the number of shares purchased or sold at each separate price upon request.

SEC source: 0000950170-24-077213 · ownership.xml · nonDerivative · entry 1

MONROE WILLIAM · CIK 0001878229 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,000,000

F1 · price: The reported price is the weighted average purchase price for the transactions reported on that line. Purchases were made at a purchase price of between $1.565-$1.68. The Reporting Person will provide to the Staff, the issuer, or a security holder full information regarding the number of shares purchased or sold at each separate price upon request.

SEC source: 0000950170-24-077213 · ownership.xml · derivative · entry 5

MONROE WILLIAM · CIK 0001878229 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,651

Underlying: Common Stock, par value $0.01 per share · 200 shares

Expires 2025-01-17

F5 · price: The reported price is the weighted average purchase price for the transactions reported on that line. Purchases were made at a purchase price of between $0.20-$0.50. The Reporting Person will provide to the Staff, the issuer, or a security holder full information regarding the number of shares purchased or sold at each separate price upon request.

SEC source: 0000950170-24-058100 · ownership.xml · nonDerivative · entry 2

Sirkes Guy · CIK 0001808492 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 206,265

SEC source: 0000950170-24-058100 · ownership.xml · nonDerivative · entry 1

Sirkes Guy · CIK 0001808492 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 217,797

F1 · shares: The sale reported on this Form 4 reflects the non-discretionary sale of shares of common stock of Nine Energy Service, Inc. by the reporting person necessary to satisfy tax withholding obligations in connection with the vesting of the time-based restricted stock award granted on May 9, 2023.

SEC source: 0000950170-24-058038 · ownership.xml · nonDerivative · entry 1

DANNER ERNIE L · CIK 0001212147 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 79,719

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.950 to $2.025, inclusive. The reporting person undertakes to provide to Nine Energy Service, Inc., any security holder of Nine Energy Service, Inc., or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0000950170-24-058039 · ownership.xml · nonDerivative · entry 1

MOORE THEODORE R. · CIK 0001526088 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 206,453

SEC source: 0000950170-24-058040 · ownership.xml · nonDerivative · entry 1

Crombie David · CIK 0001727542 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 332,553

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.935 to $1.978, inclusive. The reporting person undertakes to provide to Nine Energy Service, Inc., any security holder of Nine Energy Service, Inc., or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0000950170-24-058181 · ownership.xml · nonDerivative · entry 1

Luz S. Brett · CIK 0001715489 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 102,163

F1 · shares: The sale reported on this Form 4 reflects the non-discretionary sale of shares of common stock of Nine Energy Service, Inc. by the reporting person necessary to satisfy tax withholding obligations in connection with the vesting of the time-based restricted stock award granted on May 9, 2023.

SEC source: 0000950170-24-058182 · ownership.xml · nonDerivative · entry 1

MOORE THEODORE R. · CIK 0001526088 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 202,541

F1 · shares: The sale reported on this Form 4 reflects the non-discretionary sale of shares of common stock of Nine Energy Service, Inc. by the reporting person necessary to satisfy tax withholding obligations in connection with the vesting of the time-based restricted stock award granted on May 9, 2023.

SEC source: 0000950170-24-058184 · ownership.xml · nonDerivative · entry 1

Crombie David · CIK 0001727542 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 325,490

F1 · shares: The sale reported on this Form 4 reflects the non-discretionary sale of shares of common stock of Nine Energy Service, Inc. by the reporting person necessary to satisfy tax withholding obligations in connection with the vesting of the time-based restricted stock award granted on May 9, 2023.

SEC source: 0000950170-24-058183 · ownership.xml · nonDerivative · entry 1

Fox Ann G · CIK 0001727661 · Director · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 782,996

F1 · shares: The sale reported on this Form 4 reflects the non-discretionary sale of shares of common stock of Nine Energy Service, Inc. by the reporting person necessary to satisfy tax withholding obligations in connection with the vesting of the time-based restricted stock award granted on May 9, 2023.

SEC source: 0000950170-24-057231 · ownership.xml · nonDerivative · entry 1

Sirkes Guy · CIK 0001808492 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 221,784

F1 · shares: These shares of restricted stock will vest in three equal annual installments on the first three anniversaries of the grant date.

F2 · balance_after: Reflects the transfer of 842 shares of common stock by the reporting person to his ex-spouse since the date of the reporting person's last ownership report.

SEC source: 0000950170-24-057210 · ownership.xml · nonDerivative · entry 1

Willis Darryl Keith · CIK 0001748639 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 73,409

F1 · shares: These shares of restricted stock will vest on May 7, 2025 (the first anniversary of the grant date).

SEC source: 0000950170-24-057199 · ownership.xml · nonDerivative · entry 1

Luz S. Brett · CIK 0001715489 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 103,599

F1 · shares: These shares of restricted stock will vest in three equal annual installments on the first three anniversaries of the grant date.

SEC source: 0000950170-24-057229 · ownership.xml · nonDerivative · entry 1

SCHWINGER SCOTT · CIK 0001282435 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 97,107

F1 · shares: These shares of restricted stock will vest on May 7, 2025 (the first anniversary of the grant date).

SEC source: 0000950170-24-057217 · ownership.xml · nonDerivative · entry 1

DANNER ERNIE L · CIK 0001212147 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 216,572

F1 · shares: These shares of restricted stock will vest on May 7, 2025 (the first anniversary of the grant date).