NINE

SEC source: 0000950170-25-064610 · ownership.xml · nonDerivative · entry 1

MOORE THEODORE R. · CIK 0001526088 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 149,658

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 3, 2022.

SEC source: 0000950170-25-064605 · ownership.xml · nonDerivative · entry 1

Crombie David · CIK 0001727542 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 229,961

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 3, 2022.

SEC source: 0000950170-25-064596 · ownership.xml · nonDerivative · entry 1

Fox Ann G · CIK 0001727661 · Director · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 549,714

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 3, 2022.

SEC source: 0000950170-25-110919 · ownership.xml · nonDerivative · entry 1

MONROE WILLIAM · CIK 0001878229 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,113,000

F1 · price: The reported price is the weighted average sales price for the transactions reported on that line. Sales were made at prices between $0.8421-$0.9356 per share. 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: 0001085550-24-000011 · wk-form4_1735004935.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: 443,631

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: 0001085550-24-000011 · wk-form4_1735004935.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: 2,143,253

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: 0001085550-24-000011 · wk-form4_1735004935.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(A), L.P.

Disclosed balance after: 460,358

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: 0001085550-24-000011 · wk-form4_1735004935.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: 2,189,779

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: 0001085550-24-000010 · wk-form4_1734643289.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: 492,092

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: 0001085550-24-000010 · wk-form4_1734643289.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: 2,344,716

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: 0001085550-24-000010 · wk-form4_1734643289.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(A), L.P.

Disclosed balance after: 498,310

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: 0001085550-24-000010 · wk-form4_1734643289.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: 2,375,079

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: 0001085550-24-000009 · wk-form4_1734390453.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: 534,591

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: 0001085550-24-000009 · wk-form4_1734390453.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: 2,552,217

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: 0001085550-24-000009 · wk-form4_1734390453.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(A), L.P.

Disclosed balance after: 832,091

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: 0001085550-24-000009 · wk-form4_1734390453.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: 4,004,717

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: 0001085550-24-000008 · wk-form4_1733953264.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: 840,604

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: 0001085550-24-000008 · wk-form4_1733953264.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: 4,046,280

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: 0001085550-24-000008 · wk-form4_1733953264.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: 896,075

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: 0001085550-24-000008 · wk-form4_1733953264.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: 4,317,111

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: 0001085550-24-000008 · wk-form4_1733953264.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: 896,468

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: 0001085550-24-000008 · wk-form4_1733953264.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: 4,319,030

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: 0001085550-24-000007 · wk-form4_1733521176.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: 899,218

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: 0001085550-24-000007 · wk-form4_1733521176.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: 4,327,949

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: 0001085550-24-000007 · wk-form4_1733521176.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: 901,383

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: 0001085550-24-000007 · wk-form4_1733521176.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: 4,338,523

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: 0001085550-24-000007 · wk-form4_1733521176.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: 937,889

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: 0001085550-24-000007 · wk-form4_1733521176.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: 4,516,758

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: 0001085550-24-000006 · wk-form4_1733263107.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: 942,397

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: 0001085550-24-000006 · wk-form4_1733263107.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: 4,543,274

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: 0000950170-24-133400 · ownership.xml · nonDerivative · entry 1

Sirkes Guy · CIK 0001808492 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 156,966

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.670 to $1.690, 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: 0001085550-24-000006 · wk-form4_1733263107.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: 951,929

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: 0001085550-24-000006 · wk-form4_1733263107.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: 4,589,811

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: 0001085550-24-000006 · wk-form4_1733263107.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: 983,934

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: 0001085550-24-000006 · wk-form4_1733263107.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: 4,746,072

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: 0001085550-24-000005 · wk-form4_1732742367.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: 1,002,103

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: 0001085550-24-000005 · wk-form4_1732742367.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: 4,834,781

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: 0001085550-24-000005 · wk-form4_1732742367.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: 1,021,436

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: 0001085550-24-000005 · wk-form4_1732742367.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: 4,929,170

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: 0001085550-24-000005 · wk-form4_1732742367.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: 1,042,557

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: 0001085550-24-000005 · wk-form4_1732742367.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: 5,032,296

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: 0001085550-24-000004 · wk-form4_1732312805.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: 1,100,394

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: 0001085550-24-000004 · wk-form4_1732312805.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: 5,314,678

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: 0001085550-24-000004 · wk-form4_1732312805.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: 1,185,492

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: 0001085550-24-000004 · wk-form4_1732312805.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: 5,708,198

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: 0000950170-24-130329 · ownership.xml · nonDerivative · entry 3

MONROE WILLIAM · CIK 0001878229 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,860,000

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 $1.2106-$1.2796. 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 3

MONROE WILLIAM · CIK 0001878229 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,863,000

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 $1.2106-$1.2796. 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: 0001085550-24-000004 · wk-form4_1732312805.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: 1,281,191

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: 0001085550-24-000004 · wk-form4_1732312805.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: 6,175,435

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 2

MONROE WILLIAM · CIK 0001878229 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,600,000

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.