TALO

SEC source: 0001104659-22-054694 · tm2214118-2_4seq1.xml · nonDerivative · entry 1

Riverstone Energy Partners V, L.P. · CIK 0001597142 · Director · 10% owner

Riverstone Talos Energy Equityco LLC · CIK 0001741035 · Director · 10% owner

Riverstone V Talos Holdings, L.P. · CIK 0001741036 · Director · 10% owner

Riverstone Global Energy & Power Fund V (FT), L.P. · CIK 0001741037 · Director · 10% owner

Riverstone Energy GP V, LLC · CIK 0001597157 · Director · 10% owner

Riverstone Energy GP V Corp. · CIK 0001706510 · Director · 10% owner

Riverstone Talos Energy Debtco LLC · CIK 0001741038 · Director · 10% owner

Riverstone V Castex 2014 Holdings, L.P. · CIK 0001925215 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 15,487,380

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $19.01 to $19.04. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the 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.

F3 · ownership.nature: Following the transactions reported herein, includes 10,507,152 shares held of record by Riverstone Talos Energy Equityco LLC ("Riverstone Equityco"), 966,520 shares held of record by Riverstone Talos Energy Debtco LLC ("Riverstone Debtco"), 3,466,696 shares held of record by ILX Holdings II, LLC ("ILX II"), and 540,637 shares held of record by Riverstone V Castex 2014 Holdings, L.P. ("Castex 2014").

F4 · ownership.nature: David M. Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C., which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Riverstone Holdings"), which is the sole shareholder of Riverstone Energy GP V Corp., which is the managing member of Riverstone Energy GP V, LLC, which is the general partner of Riverstone Energy Partners V, L.P. ("Riverstone Energy Partners V"), which is the general partner of Riverstone Global Energy and Power Fund V (FT), L.P., which is the general partner of Riverstone V Talos Holdings, L.P., which is the managing member of Riverstone Equityco and the sole manager of Riverstone Debtco.

F5 · ownership.nature: In addition, Riverstone Energy Partners V owns an indirect interest in Castex 2014 and in ILX II. Each of the foregoing entity or person disclaims any such beneficial ownership of the securities reported herein except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose.

SEC source: 0001104659-22-054689 · tm2214118-1_4seq1.xml · nonDerivative · entry 1

RIVERSTONE HOLDINGS LLC · CIK 0001247497 · Director · 10% owner

Riverstone/Gower Mgmt Co Holdings, L.P. · CIK 0001706129 · Director · 10% owner

Riverstone Management Group, L.L.C. · CIK 0001705948 · Director · 10% owner

LEUSCHEN DAVID M · CIK 0001222726 · Director · 10% owner

LAPEYRE PIERRE F JR · CIK 0001232151 · Director · 10% owner

ILX Holdings II, LLC · CIK 0001925147 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 15,487,380

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $19.01 to $19.04. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the 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.

F3 · ownership.nature: Following the transactions reported herein, includes 10,507,152 shares held of record by Riverstone Talos Energy Equityco LLC ("Riverstone Equityco"), 966,520 shares held of record by Riverstone Talos Energy Debtco LLC ("Riverstone Debtco"), 3,466,696 shares held of record by ILX Holdings II, LLC ("ILX II"), and 540,637 shares held of record by Riverstone V Castex 2014 Holdings, L.P. ("Castex 2014").

F4 · ownership.nature: David M. Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C., which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Riverstone Holdings"), which is the sole shareholder of Riverstone Energy GP V Corp., which is the managing member of Riverstone Energy GP V, LLC, which is the general partner of Riverstone Energy Partners V, L.P. ("Riverstone Energy Partners V"), which is the general partner of Riverstone Global Energy and Power Fund V (FT), L.P., which is the general partner of Riverstone V Talos Holdings, L.P., which is the managing member of Riverstone Equityco and the sole manager of Riverstone Debtco.

F5 · ownership.nature: In addition, Riverstone Energy Partners V owns an indirect interest in Castex 2014 and in ILX II. Each of the foregoing entity or person disclaims any such beneficial ownership of the securities reported herein except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose.

SEC source: 0001104659-22-050443 · tm2213642-2_4seq1.xml · nonDerivative · entry 1

Riverstone Energy Partners V, L.P. · CIK 0001597142 · Director · 10% owner

Riverstone Talos Energy Equityco LLC · CIK 0001741035 · Director · 10% owner

Riverstone V Talos Holdings, L.P. · CIK 0001741036 · Director · 10% owner

Riverstone Global Energy & Power Fund V (FT), L.P. · CIK 0001741037 · Director · 10% owner

Riverstone Energy GP V, LLC · CIK 0001597157 · Director · 10% owner

Riverstone Energy GP V Corp. · CIK 0001706510 · Director · 10% owner

Riverstone Talos Energy Debtco LLC · CIK 0001741038 · Director · 10% owner

Riverstone V Castex 2014 Holdings, L.P. · CIK 0001925215 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 15,499,180

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $19.00 to $19.19. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the 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.

F3 · ownership.nature: Following the transactions reported herein, includes 10,519,488 shares held of record by Riverstone Talos Energy Equityco LLC ("Riverstone Equityco"), 967,655 shares held of record by Riverstone Talos Energy Debtco LLC ("Riverstone Debtco"), 3,470,766 shares held of record by ILX Holdings II, LLC ("ILX II"), and 541,271 shares held of record by Riverstone V Castex 2014 Holdings, L.P. ("Castex 2014").

F4 · ownership.nature: David M. Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C., which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Riverstone Holdings"), which is the sole shareholder of Riverstone Energy GP V Corp., which is the managing member of Riverstone Energy GP V, LLC, which is the general partner of Riverstone Energy Partners V, L.P. ("Riverstone Energy Partners V"), which is the general partner of Riverstone Global Energy and Power Fund V (FT), L.P., which is the general partner of Riverstone V Talos Holdings, L.P., which is the managing member of Riverstone Equityco and the sole manager of Riverstone Debtco.

F5 · ownership.nature: In addition, Riverstone Energy Partners V owns an indirect interest in Castex 2014 and in ILX II. Each of the foregoing entity or person disclaims any such beneficial ownership of the securities reported herein except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose.

SEC source: 0001104659-22-050439 · tm2213642-1_4seq1.xml · nonDerivative · entry 1

RIVERSTONE HOLDINGS LLC · CIK 0001247497 · Director · 10% owner

Riverstone/Gower Mgmt Co Holdings, L.P. · CIK 0001706129 · Director · 10% owner

Riverstone Management Group, L.L.C. · CIK 0001705948 · Director · 10% owner

LEUSCHEN DAVID M · CIK 0001222726 · Director · 10% owner

LAPEYRE PIERRE F JR · CIK 0001232151 · Director · 10% owner

ILX Holdings II, LLC · CIK 0001925147 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 15,499,180

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $19.00 to $19.19. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the 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.

F3 · ownership.nature: Following the transactions reported herein, includes 10,519,488 shares held of record by Riverstone Talos Energy Equityco LLC ("Riverstone Equityco"), 967,655 shares held of record by Riverstone Talos Energy Debtco LLC ("Riverstone Debtco"), 3,470,766 shares held of record by ILX Holdings II, LLC ("ILX II"), and 541,271 shares held of record by Riverstone V Castex 2014 Holdings, L.P. ("Castex 2014").

F4 · ownership.nature: David M. Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C., which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Riverstone Holdings"), which is the sole shareholder of Riverstone Energy GP V Corp., which is the managing member of Riverstone Energy GP V, LLC, which is the general partner of Riverstone Energy Partners V, L.P. ("Riverstone Energy Partners V"), which is the general partner of Riverstone Global Energy and Power Fund V (FT), L.P., which is the general partner of Riverstone V Talos Holdings, L.P., which is the managing member of Riverstone Equityco and the sole manager of Riverstone Debtco.

F5 · ownership.nature: In addition, Riverstone Energy Partners V owns an indirect interest in Castex 2014 and in ILX II. Each of the foregoing entity or person disclaims any such beneficial ownership of the securities reported herein except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose.

SEC source: 0001104659-22-049028 · tm2213372-2_4seq1.xml · nonDerivative · entry 4

Riverstone Energy Partners V, L.P. · CIK 0001597142 · Director · 10% owner

Riverstone Talos Energy Equityco LLC · CIK 0001741035 · Director · 10% owner

Riverstone V Talos Holdings, L.P. · CIK 0001741036 · Director · 10% owner

Riverstone Global Energy & Power Fund V (FT), L.P. · CIK 0001741037 · Director · 10% owner

Riverstone Energy GP V, LLC · CIK 0001597157 · Director · 10% owner

Riverstone Energy GP V Corp. · CIK 0001706510 · Director · 10% owner

Riverstone Talos Energy Debtco LLC · CIK 0001741038 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 15,507,624

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F8 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $20.00 to $20.40. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the 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.

F3 · ownership.nature: Following the transactions reported herein, includes 10,525,219 shares held of record by Riverstone Talos Energy Equityco LLC ("Riverstone Equityco"), 968,182 shares held of record by Riverstone Talos Energy Debtco LLC ("Riverstone Debtco"), 3,472,657 shares held of record by ILX Holdings II, LLC ("ILX II"), and 541,566 shares held of record by Riverstone V Castex 2014 Holdings, L.P. ("Castex 2014").

F4 · ownership.nature: David M. Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C., which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Riverstone Holdings"), which is the sole shareholder of Riverstone Energy GP V Corp., which is the managing member of Riverstone Energy GP V, LLC, which is the general partner of Riverstone Energy Partners V, L.P. ("Riverstone Energy Partners V"), which is the general partner of Riverstone Global Energy and Power Fund V (FT), L.P., which is the general partner of Riverstone V Talos Holdings, L.P., which is the managing member of Riverstone Equityco and the sole manager of Riverstone Debtco.

F5 · ownership.nature: In addition, Riverstone Energy Partners V owns an indirect interest in Castex 2014 and in ILX II. Each of the foregoing entity or person disclaims any such beneficial ownership of the securities reported herein except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose.

SEC source: 0001104659-22-049028 · tm2213372-2_4seq1.xml · nonDerivative · entry 3

Riverstone Energy Partners V, L.P. · CIK 0001597142 · Director · 10% owner

Riverstone Talos Energy Equityco LLC · CIK 0001741035 · Director · 10% owner

Riverstone V Talos Holdings, L.P. · CIK 0001741036 · Director · 10% owner

Riverstone Global Energy & Power Fund V (FT), L.P. · CIK 0001741037 · Director · 10% owner

Riverstone Energy GP V, LLC · CIK 0001597157 · Director · 10% owner

Riverstone Energy GP V Corp. · CIK 0001706510 · Director · 10% owner

Riverstone Talos Energy Debtco LLC · CIK 0001741038 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 15,538,785

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F7 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $19.00 to $19.995. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the 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.

F3 · ownership.nature: Following the transactions reported herein, includes 10,525,219 shares held of record by Riverstone Talos Energy Equityco LLC ("Riverstone Equityco"), 968,182 shares held of record by Riverstone Talos Energy Debtco LLC ("Riverstone Debtco"), 3,472,657 shares held of record by ILX Holdings II, LLC ("ILX II"), and 541,566 shares held of record by Riverstone V Castex 2014 Holdings, L.P. ("Castex 2014").

F4 · ownership.nature: David M. Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C., which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Riverstone Holdings"), which is the sole shareholder of Riverstone Energy GP V Corp., which is the managing member of Riverstone Energy GP V, LLC, which is the general partner of Riverstone Energy Partners V, L.P. ("Riverstone Energy Partners V"), which is the general partner of Riverstone Global Energy and Power Fund V (FT), L.P., which is the general partner of Riverstone V Talos Holdings, L.P., which is the managing member of Riverstone Equityco and the sole manager of Riverstone Debtco.

F5 · ownership.nature: In addition, Riverstone Energy Partners V owns an indirect interest in Castex 2014 and in ILX II. Each of the foregoing entity or person disclaims any such beneficial ownership of the securities reported herein except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose.

SEC source: 0001104659-22-049020 · tm2213372-1_4seq1.xml · nonDerivative · entry 4

RIVERSTONE HOLDINGS LLC · CIK 0001247497 · Director · 10% owner

Riverstone/Gower Mgmt Co Holdings, L.P. · CIK 0001706129 · Director · 10% owner

Riverstone Management Group, L.L.C. · CIK 0001705948 · Director · 10% owner

LEUSCHEN DAVID M · CIK 0001222726 · Director · 10% owner

LAPEYRE PIERRE F JR · CIK 0001232151 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 15,507,624

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F8 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $20.00 to $20.40. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the 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.

F3 · ownership.nature: Following the transactions reported herein, includes 10,525,219 shares held of record by Riverstone Talos Energy Equityco LLC ("Riverstone Equityco"), 968,182 shares held of record by Riverstone Talos Energy Debtco LLC ("Riverstone Debtco"), 3,472,657 shares held of record by ILX Holdings II, LLC ("ILX II"), and 541,566 shares held of record by Riverstone V Castex 2014 Holdings, L.P. ("Castex 2014").

F4 · ownership.nature: David M. Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C., which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Riverstone Holdings"), which is the sole shareholder of Riverstone Energy GP V Corp., which is the managing member of Riverstone Energy GP V, LLC, which is the general partner of Riverstone Energy Partners V, L.P. ("Riverstone Energy Partners V"), which is the general partner of Riverstone Global Energy and Power Fund V (FT), L.P., which is the general partner of Riverstone V Talos Holdings, L.P., which is the managing member of Riverstone Equityco and the sole manager of Riverstone Debtco.

F5 · ownership.nature: In addition, Riverstone Energy Partners V owns an indirect interest in Castex 2014 and in ILX II. Each of the foregoing entity or person disclaims any such beneficial ownership of the securities reported herein except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose.

SEC source: 0001104659-22-049020 · tm2213372-1_4seq1.xml · nonDerivative · entry 3

RIVERSTONE HOLDINGS LLC · CIK 0001247497 · Director · 10% owner

Riverstone/Gower Mgmt Co Holdings, L.P. · CIK 0001706129 · Director · 10% owner

Riverstone Management Group, L.L.C. · CIK 0001705948 · Director · 10% owner

LEUSCHEN DAVID M · CIK 0001222726 · Director · 10% owner

LAPEYRE PIERRE F JR · CIK 0001232151 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 15,538,785

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F7 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $19.00 to $19.995. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the 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.

F3 · ownership.nature: Following the transactions reported herein, includes 10,525,219 shares held of record by Riverstone Talos Energy Equityco LLC ("Riverstone Equityco"), 968,182 shares held of record by Riverstone Talos Energy Debtco LLC ("Riverstone Debtco"), 3,472,657 shares held of record by ILX Holdings II, LLC ("ILX II"), and 541,566 shares held of record by Riverstone V Castex 2014 Holdings, L.P. ("Castex 2014").

F4 · ownership.nature: David M. Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C., which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Riverstone Holdings"), which is the sole shareholder of Riverstone Energy GP V Corp., which is the managing member of Riverstone Energy GP V, LLC, which is the general partner of Riverstone Energy Partners V, L.P. ("Riverstone Energy Partners V"), which is the general partner of Riverstone Global Energy and Power Fund V (FT), L.P., which is the general partner of Riverstone V Talos Holdings, L.P., which is the managing member of Riverstone Equityco and the sole manager of Riverstone Debtco.

F5 · ownership.nature: In addition, Riverstone Energy Partners V owns an indirect interest in Castex 2014 and in ILX II. Each of the foregoing entity or person disclaims any such beneficial ownership of the securities reported herein except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose.

SEC source: 0001104659-22-049028 · tm2213372-2_4seq1.xml · nonDerivative · entry 2

Riverstone Energy Partners V, L.P. · CIK 0001597142 · Director · 10% owner

Riverstone Talos Energy Equityco LLC · CIK 0001741035 · Director · 10% owner

Riverstone V Talos Holdings, L.P. · CIK 0001741036 · Director · 10% owner

Riverstone Global Energy & Power Fund V (FT), L.P. · CIK 0001741037 · Director · 10% owner

Riverstone Energy GP V, LLC · CIK 0001597157 · Director · 10% owner

Riverstone Energy GP V Corp. · CIK 0001706510 · Director · 10% owner

Riverstone Talos Energy Debtco LLC · CIK 0001741038 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 15,585,911

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $20.00 to $20.33. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the 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.

F3 · ownership.nature: Following the transactions reported herein, includes 10,525,219 shares held of record by Riverstone Talos Energy Equityco LLC ("Riverstone Equityco"), 968,182 shares held of record by Riverstone Talos Energy Debtco LLC ("Riverstone Debtco"), 3,472,657 shares held of record by ILX Holdings II, LLC ("ILX II"), and 541,566 shares held of record by Riverstone V Castex 2014 Holdings, L.P. ("Castex 2014").

F4 · ownership.nature: David M. Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C., which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Riverstone Holdings"), which is the sole shareholder of Riverstone Energy GP V Corp., which is the managing member of Riverstone Energy GP V, LLC, which is the general partner of Riverstone Energy Partners V, L.P. ("Riverstone Energy Partners V"), which is the general partner of Riverstone Global Energy and Power Fund V (FT), L.P., which is the general partner of Riverstone V Talos Holdings, L.P., which is the managing member of Riverstone Equityco and the sole manager of Riverstone Debtco.

F5 · ownership.nature: In addition, Riverstone Energy Partners V owns an indirect interest in Castex 2014 and in ILX II. Each of the foregoing entity or person disclaims any such beneficial ownership of the securities reported herein except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose.

SEC source: 0001104659-22-049028 · tm2213372-2_4seq1.xml · nonDerivative · entry 1

Riverstone Energy Partners V, L.P. · CIK 0001597142 · Director · 10% owner

Riverstone Talos Energy Equityco LLC · CIK 0001741035 · Director · 10% owner

Riverstone V Talos Holdings, L.P. · CIK 0001741036 · Director · 10% owner

Riverstone Global Energy & Power Fund V (FT), L.P. · CIK 0001741037 · Director · 10% owner

Riverstone Energy GP V, LLC · CIK 0001597157 · Director · 10% owner

Riverstone Energy GP V Corp. · CIK 0001706510 · Director · 10% owner

Riverstone Talos Energy Debtco LLC · CIK 0001741038 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 15,653,900

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $19.34 to $19.995. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the 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.

F3 · ownership.nature: Following the transactions reported herein, includes 10,525,219 shares held of record by Riverstone Talos Energy Equityco LLC ("Riverstone Equityco"), 968,182 shares held of record by Riverstone Talos Energy Debtco LLC ("Riverstone Debtco"), 3,472,657 shares held of record by ILX Holdings II, LLC ("ILX II"), and 541,566 shares held of record by Riverstone V Castex 2014 Holdings, L.P. ("Castex 2014").

F4 · ownership.nature: David M. Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C., which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Riverstone Holdings"), which is the sole shareholder of Riverstone Energy GP V Corp., which is the managing member of Riverstone Energy GP V, LLC, which is the general partner of Riverstone Energy Partners V, L.P. ("Riverstone Energy Partners V"), which is the general partner of Riverstone Global Energy and Power Fund V (FT), L.P., which is the general partner of Riverstone V Talos Holdings, L.P., which is the managing member of Riverstone Equityco and the sole manager of Riverstone Debtco.

F5 · ownership.nature: In addition, Riverstone Energy Partners V owns an indirect interest in Castex 2014 and in ILX II. Each of the foregoing entity or person disclaims any such beneficial ownership of the securities reported herein except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose.

SEC source: 0001104659-22-049020 · tm2213372-1_4seq1.xml · nonDerivative · entry 2

RIVERSTONE HOLDINGS LLC · CIK 0001247497 · Director · 10% owner

Riverstone/Gower Mgmt Co Holdings, L.P. · CIK 0001706129 · Director · 10% owner

Riverstone Management Group, L.L.C. · CIK 0001705948 · Director · 10% owner

LEUSCHEN DAVID M · CIK 0001222726 · Director · 10% owner

LAPEYRE PIERRE F JR · CIK 0001232151 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 15,585,911

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $20.00 to $20.33. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the 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.

F3 · ownership.nature: Following the transactions reported herein, includes 10,525,219 shares held of record by Riverstone Talos Energy Equityco LLC ("Riverstone Equityco"), 968,182 shares held of record by Riverstone Talos Energy Debtco LLC ("Riverstone Debtco"), 3,472,657 shares held of record by ILX Holdings II, LLC ("ILX II"), and 541,566 shares held of record by Riverstone V Castex 2014 Holdings, L.P. ("Castex 2014").

F4 · ownership.nature: David M. Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C., which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Riverstone Holdings"), which is the sole shareholder of Riverstone Energy GP V Corp., which is the managing member of Riverstone Energy GP V, LLC, which is the general partner of Riverstone Energy Partners V, L.P. ("Riverstone Energy Partners V"), which is the general partner of Riverstone Global Energy and Power Fund V (FT), L.P., which is the general partner of Riverstone V Talos Holdings, L.P., which is the managing member of Riverstone Equityco and the sole manager of Riverstone Debtco.

F5 · ownership.nature: In addition, Riverstone Energy Partners V owns an indirect interest in Castex 2014 and in ILX II. Each of the foregoing entity or person disclaims any such beneficial ownership of the securities reported herein except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose.

SEC source: 0001104659-22-049020 · tm2213372-1_4seq1.xml · nonDerivative · entry 1

RIVERSTONE HOLDINGS LLC · CIK 0001247497 · Director · 10% owner

Riverstone/Gower Mgmt Co Holdings, L.P. · CIK 0001706129 · Director · 10% owner

Riverstone Management Group, L.L.C. · CIK 0001705948 · Director · 10% owner

LEUSCHEN DAVID M · CIK 0001222726 · Director · 10% owner

LAPEYRE PIERRE F JR · CIK 0001232151 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 15,653,900

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $19.34 to $19.995. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the 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.

F3 · ownership.nature: Following the transactions reported herein, includes 10,525,219 shares held of record by Riverstone Talos Energy Equityco LLC ("Riverstone Equityco"), 968,182 shares held of record by Riverstone Talos Energy Debtco LLC ("Riverstone Debtco"), 3,472,657 shares held of record by ILX Holdings II, LLC ("ILX II"), and 541,566 shares held of record by Riverstone V Castex 2014 Holdings, L.P. ("Castex 2014").

F4 · ownership.nature: David M. Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C., which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Riverstone Holdings"), which is the sole shareholder of Riverstone Energy GP V Corp., which is the managing member of Riverstone Energy GP V, LLC, which is the general partner of Riverstone Energy Partners V, L.P. ("Riverstone Energy Partners V"), which is the general partner of Riverstone Global Energy and Power Fund V (FT), L.P., which is the general partner of Riverstone V Talos Holdings, L.P., which is the managing member of Riverstone Equityco and the sole manager of Riverstone Debtco.

F5 · ownership.nature: In addition, Riverstone Energy Partners V owns an indirect interest in Castex 2014 and in ILX II. Each of the foregoing entity or person disclaims any such beneficial ownership of the securities reported herein except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose.

SEC source: 0001104659-22-047863 · tm2213159-2_4seq1.xml · nonDerivative · entry 4

Riverstone Energy Partners V, L.P. · CIK 0001597142 · Director · 10% owner

Riverstone Talos Energy Equityco LLC · CIK 0001741035 · Director · 10% owner

Riverstone V Talos Holdings, L.P. · CIK 0001741036 · Director · 10% owner

Riverstone Global Energy & Power Fund V (FT), L.P. · CIK 0001741037 · Director · 10% owner

Riverstone Energy GP V, LLC · CIK 0001597157 · Director · 10% owner

Riverstone Energy GP V Corp. · CIK 0001706510 · Director · 10% owner

Riverstone Talos Energy Debtco LLC · CIK 0001741038 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 15,714,803

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F3 · ownership.nature: Following the transactions reported herein, includes 10,665,834 shares held of record by Riverstone Talos Energy Equityco LLC ("Riverstone Equityco"), 981,117 shares held of record by Riverstone Talos Energy Debtco LLC ("Riverstone Debtco"), 3,519,051 shares held of record by ILX Holdings II, LLC ("ILX II"), and 548,801 shares held of record by Riverstone V Castex 2014 Holdings, L.P. ("Castex 2014").

F4 · ownership.nature: David M. Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C., which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Riverstone Holdings"), which is the sole shareholder of Riverstone Energy GP V Corp., which is the managing member of Riverstone Energy GP V, LLC, which is the general partner of Riverstone Energy Partners V, L.P. ("Riverstone Energy Partners V"), which is the general partner of Riverstone Global Energy and Power Fund V (FT), L.P., which is the general partner of Riverstone V Talos Holdings, L.P., which is the managing member of Riverstone Equityco and the sole manager of Riverstone Debtco.

F5 · ownership.nature: In addition, Riverstone Energy Partners V owns an indirect interest in Castex 2014 and in ILX II. Each of the foregoing entity or person disclaims any such beneficial ownership of the securities reported herein except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose.

SEC source: 0001104659-22-047863 · tm2213159-2_4seq1.xml · nonDerivative · entry 3

Riverstone Energy Partners V, L.P. · CIK 0001597142 · Director · 10% owner

Riverstone Talos Energy Equityco LLC · CIK 0001741035 · Director · 10% owner

Riverstone V Talos Holdings, L.P. · CIK 0001741036 · Director · 10% owner

Riverstone Global Energy & Power Fund V (FT), L.P. · CIK 0001741037 · Director · 10% owner

Riverstone Energy GP V, LLC · CIK 0001597157 · Director · 10% owner

Riverstone Energy GP V Corp. · CIK 0001706510 · Director · 10% owner

Riverstone Talos Energy Debtco LLC · CIK 0001741038 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 15,715,124

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F7 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $19.38 to $19.98. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the 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.

F3 · ownership.nature: Following the transactions reported herein, includes 10,665,834 shares held of record by Riverstone Talos Energy Equityco LLC ("Riverstone Equityco"), 981,117 shares held of record by Riverstone Talos Energy Debtco LLC ("Riverstone Debtco"), 3,519,051 shares held of record by ILX Holdings II, LLC ("ILX II"), and 548,801 shares held of record by Riverstone V Castex 2014 Holdings, L.P. ("Castex 2014").

F4 · ownership.nature: David M. Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C., which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Riverstone Holdings"), which is the sole shareholder of Riverstone Energy GP V Corp., which is the managing member of Riverstone Energy GP V, LLC, which is the general partner of Riverstone Energy Partners V, L.P. ("Riverstone Energy Partners V"), which is the general partner of Riverstone Global Energy and Power Fund V (FT), L.P., which is the general partner of Riverstone V Talos Holdings, L.P., which is the managing member of Riverstone Equityco and the sole manager of Riverstone Debtco.

F5 · ownership.nature: In addition, Riverstone Energy Partners V owns an indirect interest in Castex 2014 and in ILX II. Each of the foregoing entity or person disclaims any such beneficial ownership of the securities reported herein except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose.

SEC source: 0001104659-22-047861 · tm2213159-1_4seq1.xml · nonDerivative · entry 4

RIVERSTONE HOLDINGS LLC · CIK 0001247497 · Director · 10% owner

Riverstone/Gower Mgmt Co Holdings, L.P. · CIK 0001706129 · Director · 10% owner

Riverstone Management Group, L.L.C. · CIK 0001705948 · Director · 10% owner

LEUSCHEN DAVID M · CIK 0001222726 · Director · 10% owner

LAPEYRE PIERRE F JR · CIK 0001232151 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 15,714,803

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F3 · ownership.nature: Following the transactions reported herein, includes 10,665,834 shares held of record by Riverstone Talos Energy Equityco LLC ("Riverstone Equityco"), 981,117 shares held of record by Riverstone Talos Energy Debtco LLC ("Riverstone Debtco"), 3,519,051 shares held of record by ILX Holdings II, LLC ("ILX II"), and 548,801 shares held of record by Riverstone V Castex 2014 Holdings, L.P. ("Castex 2014").

F4 · ownership.nature: David M. Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C., which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Riverstone Holdings"), which is the sole shareholder of Riverstone Energy GP V Corp., which is the managing member of Riverstone Energy GP V, LLC, which is the general partner of Riverstone Energy Partners V, L.P. ("Riverstone Energy Partners V"), which is the general partner of Riverstone Global Energy and Power Fund V (FT), L.P., which is the general partner of Riverstone V Talos Holdings, L.P., which is the managing member of Riverstone Equityco and the sole manager of Riverstone Debtco.

F5 · ownership.nature: In addition, Riverstone Energy Partners V owns an indirect interest in Castex 2014 and in ILX II. Each of the foregoing entity or person disclaims any such beneficial ownership of the securities reported herein except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose.

SEC source: 0001104659-22-047861 · tm2213159-1_4seq1.xml · nonDerivative · entry 3

RIVERSTONE HOLDINGS LLC · CIK 0001247497 · Director · 10% owner

Riverstone/Gower Mgmt Co Holdings, L.P. · CIK 0001706129 · Director · 10% owner

Riverstone Management Group, L.L.C. · CIK 0001705948 · Director · 10% owner

LEUSCHEN DAVID M · CIK 0001222726 · Director · 10% owner

LAPEYRE PIERRE F JR · CIK 0001232151 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 15,715,124

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F7 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $19.38 to $19.98. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the 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.

F3 · ownership.nature: Following the transactions reported herein, includes 10,665,834 shares held of record by Riverstone Talos Energy Equityco LLC ("Riverstone Equityco"), 981,117 shares held of record by Riverstone Talos Energy Debtco LLC ("Riverstone Debtco"), 3,519,051 shares held of record by ILX Holdings II, LLC ("ILX II"), and 548,801 shares held of record by Riverstone V Castex 2014 Holdings, L.P. ("Castex 2014").

F4 · ownership.nature: David M. Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C., which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Riverstone Holdings"), which is the sole shareholder of Riverstone Energy GP V Corp., which is the managing member of Riverstone Energy GP V, LLC, which is the general partner of Riverstone Energy Partners V, L.P. ("Riverstone Energy Partners V"), which is the general partner of Riverstone Global Energy and Power Fund V (FT), L.P., which is the general partner of Riverstone V Talos Holdings, L.P., which is the managing member of Riverstone Equityco and the sole manager of Riverstone Debtco.

F5 · ownership.nature: In addition, Riverstone Energy Partners V owns an indirect interest in Castex 2014 and in ILX II. Each of the foregoing entity or person disclaims any such beneficial ownership of the securities reported herein except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose.

SEC source: 0001104659-22-047863 · tm2213159-2_4seq1.xml · nonDerivative · entry 2

Riverstone Energy Partners V, L.P. · CIK 0001597142 · Director · 10% owner

Riverstone Talos Energy Equityco LLC · CIK 0001741035 · Director · 10% owner

Riverstone V Talos Holdings, L.P. · CIK 0001741036 · Director · 10% owner

Riverstone Global Energy & Power Fund V (FT), L.P. · CIK 0001741037 · Director · 10% owner

Riverstone Energy GP V, LLC · CIK 0001597157 · Director · 10% owner

Riverstone Energy GP V Corp. · CIK 0001706510 · Director · 10% owner

Riverstone Talos Energy Debtco LLC · CIK 0001741038 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 15,826,416

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $20.00 to $20.53. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the 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.

F3 · ownership.nature: Following the transactions reported herein, includes 10,665,834 shares held of record by Riverstone Talos Energy Equityco LLC ("Riverstone Equityco"), 981,117 shares held of record by Riverstone Talos Energy Debtco LLC ("Riverstone Debtco"), 3,519,051 shares held of record by ILX Holdings II, LLC ("ILX II"), and 548,801 shares held of record by Riverstone V Castex 2014 Holdings, L.P. ("Castex 2014").

F4 · ownership.nature: David M. Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C., which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Riverstone Holdings"), which is the sole shareholder of Riverstone Energy GP V Corp., which is the managing member of Riverstone Energy GP V, LLC, which is the general partner of Riverstone Energy Partners V, L.P. ("Riverstone Energy Partners V"), which is the general partner of Riverstone Global Energy and Power Fund V (FT), L.P., which is the general partner of Riverstone V Talos Holdings, L.P., which is the managing member of Riverstone Equityco and the sole manager of Riverstone Debtco.

F5 · ownership.nature: In addition, Riverstone Energy Partners V owns an indirect interest in Castex 2014 and in ILX II. Each of the foregoing entity or person disclaims any such beneficial ownership of the securities reported herein except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose.

SEC source: 0001104659-22-047863 · tm2213159-2_4seq1.xml · nonDerivative · entry 1

Riverstone Energy Partners V, L.P. · CIK 0001597142 · Director · 10% owner

Riverstone Talos Energy Equityco LLC · CIK 0001741035 · Director · 10% owner

Riverstone V Talos Holdings, L.P. · CIK 0001741036 · Director · 10% owner

Riverstone Global Energy & Power Fund V (FT), L.P. · CIK 0001741037 · Director · 10% owner

Riverstone Energy GP V, LLC · CIK 0001597157 · Director · 10% owner

Riverstone Energy GP V Corp. · CIK 0001706510 · Director · 10% owner

Riverstone Talos Energy Debtco LLC · CIK 0001741038 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 15,926,684

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $19.75 to $19.995. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the 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.

F3 · ownership.nature: Following the transactions reported herein, includes 10,665,834 shares held of record by Riverstone Talos Energy Equityco LLC ("Riverstone Equityco"), 981,117 shares held of record by Riverstone Talos Energy Debtco LLC ("Riverstone Debtco"), 3,519,051 shares held of record by ILX Holdings II, LLC ("ILX II"), and 548,801 shares held of record by Riverstone V Castex 2014 Holdings, L.P. ("Castex 2014").

F4 · ownership.nature: David M. Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C., which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Riverstone Holdings"), which is the sole shareholder of Riverstone Energy GP V Corp., which is the managing member of Riverstone Energy GP V, LLC, which is the general partner of Riverstone Energy Partners V, L.P. ("Riverstone Energy Partners V"), which is the general partner of Riverstone Global Energy and Power Fund V (FT), L.P., which is the general partner of Riverstone V Talos Holdings, L.P., which is the managing member of Riverstone Equityco and the sole manager of Riverstone Debtco.

F5 · ownership.nature: In addition, Riverstone Energy Partners V owns an indirect interest in Castex 2014 and in ILX II. Each of the foregoing entity or person disclaims any such beneficial ownership of the securities reported herein except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose.

SEC source: 0001104659-22-047861 · tm2213159-1_4seq1.xml · nonDerivative · entry 2

RIVERSTONE HOLDINGS LLC · CIK 0001247497 · Director · 10% owner

Riverstone/Gower Mgmt Co Holdings, L.P. · CIK 0001706129 · Director · 10% owner

Riverstone Management Group, L.L.C. · CIK 0001705948 · Director · 10% owner

LEUSCHEN DAVID M · CIK 0001222726 · Director · 10% owner

LAPEYRE PIERRE F JR · CIK 0001232151 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 15,826,416

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $20.00 to $20.53. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the 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.

F3 · ownership.nature: Following the transactions reported herein, includes 10,665,834 shares held of record by Riverstone Talos Energy Equityco LLC ("Riverstone Equityco"), 981,117 shares held of record by Riverstone Talos Energy Debtco LLC ("Riverstone Debtco"), 3,519,051 shares held of record by ILX Holdings II, LLC ("ILX II"), and 548,801 shares held of record by Riverstone V Castex 2014 Holdings, L.P. ("Castex 2014").

F4 · ownership.nature: David M. Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C., which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Riverstone Holdings"), which is the sole shareholder of Riverstone Energy GP V Corp., which is the managing member of Riverstone Energy GP V, LLC, which is the general partner of Riverstone Energy Partners V, L.P. ("Riverstone Energy Partners V"), which is the general partner of Riverstone Global Energy and Power Fund V (FT), L.P., which is the general partner of Riverstone V Talos Holdings, L.P., which is the managing member of Riverstone Equityco and the sole manager of Riverstone Debtco.

F5 · ownership.nature: In addition, Riverstone Energy Partners V owns an indirect interest in Castex 2014 and in ILX II. Each of the foregoing entity or person disclaims any such beneficial ownership of the securities reported herein except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose.

SEC source: 0001104659-22-047861 · tm2213159-1_4seq1.xml · nonDerivative · entry 1

RIVERSTONE HOLDINGS LLC · CIK 0001247497 · Director · 10% owner

Riverstone/Gower Mgmt Co Holdings, L.P. · CIK 0001706129 · Director · 10% owner

Riverstone Management Group, L.L.C. · CIK 0001705948 · Director · 10% owner

LEUSCHEN DAVID M · CIK 0001222726 · Director · 10% owner

LAPEYRE PIERRE F JR · CIK 0001232151 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 15,926,684

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $19.75 to $19.995. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the 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.

F3 · ownership.nature: Following the transactions reported herein, includes 10,665,834 shares held of record by Riverstone Talos Energy Equityco LLC ("Riverstone Equityco"), 981,117 shares held of record by Riverstone Talos Energy Debtco LLC ("Riverstone Debtco"), 3,519,051 shares held of record by ILX Holdings II, LLC ("ILX II"), and 548,801 shares held of record by Riverstone V Castex 2014 Holdings, L.P. ("Castex 2014").

F4 · ownership.nature: David M. Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C., which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Riverstone Holdings"), which is the sole shareholder of Riverstone Energy GP V Corp., which is the managing member of Riverstone Energy GP V, LLC, which is the general partner of Riverstone Energy Partners V, L.P. ("Riverstone Energy Partners V"), which is the general partner of Riverstone Global Energy and Power Fund V (FT), L.P., which is the general partner of Riverstone V Talos Holdings, L.P., which is the managing member of Riverstone Equityco and the sole manager of Riverstone Debtco.

F5 · ownership.nature: In addition, Riverstone Energy Partners V owns an indirect interest in Castex 2014 and in ILX II. Each of the foregoing entity or person disclaims any such beneficial ownership of the securities reported herein except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose.

SEC source: 0001104659-22-046890 · tm2212945-2_4seq1.xml · nonDerivative · entry 2

Riverstone Energy Partners V, L.P. · CIK 0001597142 · Director · 10% owner

Riverstone Talos Energy Equityco LLC · CIK 0001741035 · Director · 10% owner

Riverstone V Talos Holdings, L.P. · CIK 0001741036 · Director · 10% owner

Riverstone Global Energy & Power Fund V (FT), L.P. · CIK 0001741037 · Director · 10% owner

Riverstone Energy GP V, LLC · CIK 0001597157 · Director · 10% owner

Riverstone Energy GP V Corp. · CIK 0001706510 · Director · 10% owner

Riverstone Talos Energy Debtco LLC · CIK 0001741038 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 15,954,455

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $20.00 to $20.385. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the 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.

F3 · ownership.nature: Following the transactions reported herein, includes 10,828,489 shares held of record by Riverstone Talos Energy Equityco LLC ("Riverstone Equityco"), 996,079 shares held of record by Riverstone Talos Energy Debtco LLC ("Riverstone Debtco"), 3,572,717 shares held of record by ILX Holdings II, LLC ("ILX II"), and 557,170 shares held of record by Riverstone V Castex 2014 Holdings, L.P. ("Castex 2014").

F4 · ownership.nature: David M. Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C., which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Riverstone Holdings"), which is the sole shareholder of Riverstone Energy GP V Corp., which is the managing member of Riverstone Energy GP V, LLC, which is the general partner of Riverstone Energy Partners V, L.P. ("Riverstone Energy Partners V"), which is the general partner of Riverstone Global Energy and Power Fund V (FT), L.P., which is the general partner of Riverstone V Talos Holdings, L.P., which is the managing member of Riverstone Equityco and the sole manager of Riverstone Debtco.

F5 · ownership.nature: In addition, Riverstone Energy Partners V owns an indirect interest in Castex 2014 and in ILX II. Each of the foregoing entity or person disclaims any such beneficial ownership of the securities reported herein except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose.

SEC source: 0001104659-22-046890 · tm2212945-2_4seq1.xml · nonDerivative · entry 1

Riverstone Energy Partners V, L.P. · CIK 0001597142 · Director · 10% owner

Riverstone Talos Energy Equityco LLC · CIK 0001741035 · Director · 10% owner

Riverstone V Talos Holdings, L.P. · CIK 0001741036 · Director · 10% owner

Riverstone Global Energy & Power Fund V (FT), L.P. · CIK 0001741037 · Director · 10% owner

Riverstone Energy GP V, LLC · CIK 0001597157 · Director · 10% owner

Riverstone Energy GP V Corp. · CIK 0001706510 · Director · 10% owner

Riverstone Talos Energy Debtco LLC · CIK 0001741038 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 16,058,622

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $19.08 to $19.995. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the 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.

F3 · ownership.nature: Following the transactions reported herein, includes 10,828,489 shares held of record by Riverstone Talos Energy Equityco LLC ("Riverstone Equityco"), 996,079 shares held of record by Riverstone Talos Energy Debtco LLC ("Riverstone Debtco"), 3,572,717 shares held of record by ILX Holdings II, LLC ("ILX II"), and 557,170 shares held of record by Riverstone V Castex 2014 Holdings, L.P. ("Castex 2014").

F4 · ownership.nature: David M. Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C., which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Riverstone Holdings"), which is the sole shareholder of Riverstone Energy GP V Corp., which is the managing member of Riverstone Energy GP V, LLC, which is the general partner of Riverstone Energy Partners V, L.P. ("Riverstone Energy Partners V"), which is the general partner of Riverstone Global Energy and Power Fund V (FT), L.P., which is the general partner of Riverstone V Talos Holdings, L.P., which is the managing member of Riverstone Equityco and the sole manager of Riverstone Debtco.

F5 · ownership.nature: In addition, Riverstone Energy Partners V owns an indirect interest in Castex 2014 and in ILX II. Each of the foregoing entity or person disclaims any such beneficial ownership of the securities reported herein except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose.

SEC source: 0001104659-22-046886 · tm2212945-1_4seq1.xml · nonDerivative · entry 2

RIVERSTONE HOLDINGS LLC · CIK 0001247497 · Director · 10% owner

Riverstone/Gower Mgmt Co Holdings, L.P. · CIK 0001706129 · Director · 10% owner

Riverstone Management Group, L.L.C. · CIK 0001705948 · Director · 10% owner

LEUSCHEN DAVID M · CIK 0001222726 · Director · 10% owner

LAPEYRE PIERRE F JR · CIK 0001232151 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 15,954,455

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $20.00 to $20.385. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the 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.

F3 · ownership.nature: Following the transactions reported herein, includes 10,828,489 shares held of record by Riverstone Talos Energy Equityco LLC ("Riverstone Equityco"), 996,079 shares held of record by Riverstone Talos Energy Debtco LLC ("Riverstone Debtco"), 3,572,717 shares held of record by ILX Holdings II, LLC ("ILX II"), and 557,170 shares held of record by Riverstone V Castex 2014 Holdings, L.P. ("Castex 2014").

F4 · ownership.nature: David M. Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C., which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Riverstone Holdings"), which is the sole shareholder of Riverstone Energy GP V Corp., which is the managing member of Riverstone Energy GP V, LLC, which is the general partner of Riverstone Energy Partners V, L.P. ("Riverstone Energy Partners V"), which is the general partner of Riverstone Global Energy and Power Fund V (FT), L.P., which is the general partner of Riverstone V Talos Holdings, L.P., which is the managing member of Riverstone Equityco and the sole manager of Riverstone Debtco.

F5 · ownership.nature: In addition, Riverstone Energy Partners V owns an indirect interest in Castex 2014 and in ILX II. Each of the foregoing entity or person disclaims any such beneficial ownership of the securities reported herein except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose.

SEC source: 0001104659-22-046886 · tm2212945-1_4seq1.xml · nonDerivative · entry 1

RIVERSTONE HOLDINGS LLC · CIK 0001247497 · Director · 10% owner

Riverstone/Gower Mgmt Co Holdings, L.P. · CIK 0001706129 · Director · 10% owner

Riverstone Management Group, L.L.C. · CIK 0001705948 · Director · 10% owner

LEUSCHEN DAVID M · CIK 0001222726 · Director · 10% owner

LAPEYRE PIERRE F JR · CIK 0001232151 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 16,058,622

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $19.08 to $19.995. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the 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.

F3 · ownership.nature: Following the transactions reported herein, includes 10,828,489 shares held of record by Riverstone Talos Energy Equityco LLC ("Riverstone Equityco"), 996,079 shares held of record by Riverstone Talos Energy Debtco LLC ("Riverstone Debtco"), 3,572,717 shares held of record by ILX Holdings II, LLC ("ILX II"), and 557,170 shares held of record by Riverstone V Castex 2014 Holdings, L.P. ("Castex 2014").

F4 · ownership.nature: David M. Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C., which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Riverstone Holdings"), which is the sole shareholder of Riverstone Energy GP V Corp., which is the managing member of Riverstone Energy GP V, LLC, which is the general partner of Riverstone Energy Partners V, L.P. ("Riverstone Energy Partners V"), which is the general partner of Riverstone Global Energy and Power Fund V (FT), L.P., which is the general partner of Riverstone V Talos Holdings, L.P., which is the managing member of Riverstone Equityco and the sole manager of Riverstone Debtco.

F5 · ownership.nature: In addition, Riverstone Energy Partners V owns an indirect interest in Castex 2014 and in ILX II. Each of the foregoing entity or person disclaims any such beneficial ownership of the securities reported herein except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose.

SEC source: 0001104659-22-046056 · tm2212765-2_4seq1.xml · nonDerivative · entry 2

Riverstone Energy Partners V, L.P. · CIK 0001597142 · Director · 10% owner

Riverstone Talos Energy Equityco LLC · CIK 0001741035 · Director · 10% owner

Riverstone V Talos Holdings, L.P. · CIK 0001741036 · Director · 10% owner

Riverstone Global Energy & Power Fund V (FT), L.P. · CIK 0001741037 · Director · 10% owner

Riverstone Energy GP V, LLC · CIK 0001597157 · Director · 10% owner

Riverstone Energy GP V Corp. · CIK 0001706510 · Director · 10% owner

Riverstone Talos Energy Debtco LLC · CIK 0001741038 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 16,191,456

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $19.00 to $19.425. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the 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.

F3 · ownership.nature: Following the transactions reported herein, includes 10,989,345 shares held of record by Riverstone Talos Energy Equityco LLC ("Riverstone Equityco"), 1,010,876 shares held of record by Riverstone Talos Energy Debtco LLC ("Riverstone Debtco"), 3,625,788 shares held of record by ILX Holdings II, LLC ("ILX II"), and 565,447 shares held of record by Riverstone V Castex 2014 Holdings, L.P. ("Castex 2014").

F4 · ownership.nature: David M. Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C., which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Riverstone Holdings"), which is the sole shareholder of Riverstone Energy GP V Corp., which is the managing member of Riverstone Energy GP V, LLC, which is the general partner of Riverstone Energy Partners V, L.P. ("Riverstone Energy Partners V"), which is the general partner of Riverstone Global Energy and Power Fund V (FT), L.P., which is the general partner of Riverstone V Talos Holdings, L.P., which is the managing member of Riverstone Equityco and the sole manager of Riverstone Debtco.

F5 · ownership.nature: In addition, Riverstone Energy Partners V owns an indirect interest in Castex 2014 and in ILX II. Each of the foregoing entity or person disclaims any such beneficial ownership of the securities reported herein except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose.

SEC source: 0001104659-22-046053 · tm2212765-1_4seq1.xml · nonDerivative · entry 2

RIVERSTONE HOLDINGS LLC · CIK 0001247497 · Director · 10% owner

Riverstone/Gower Mgmt Co Holdings, L.P. · CIK 0001706129 · Director · 10% owner

Riverstone Management Group, L.L.C. · CIK 0001705948 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 16,191,456

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $19.00 to $19.425. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the 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.

F3 · ownership.nature: Following the transactions reported herein, includes 10,989,345 shares held of record by Riverstone Talos Energy Equityco LLC ("Riverstone Equityco"), 1,010,876 shares held of record by Riverstone Talos Energy Debtco LLC ("Riverstone Debtco"), 3,625,788 shares held of record by ILX Holdings II, LLC ("ILX II"), and 565,447 shares held of record by Riverstone V Castex 2014 Holdings, L.P. ("Castex 2014").

F4 · ownership.nature: David M. Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C., which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Riverstone Holdings"), which is the sole shareholder of Riverstone Energy GP V Corp., which is the managing member of Riverstone Energy GP V, LLC, which is the general partner of Riverstone Energy Partners V, L.P. ("Riverstone Energy Partners V"), which is the general partner of Riverstone Global Energy and Power Fund V (FT), L.P., which is the general partner of Riverstone V Talos Holdings, L.P., which is the managing member of Riverstone Equityco and the sole manager of Riverstone Debtco.

F5 · ownership.nature: In addition, Riverstone Energy Partners V owns an indirect interest in Castex 2014 and in ILX II. Each of the foregoing entity or person disclaims any such beneficial ownership of the securities reported herein except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose.

SEC source: 0001104659-22-046056 · tm2212765-2_4seq1.xml · nonDerivative · entry 1

Riverstone Energy Partners V, L.P. · CIK 0001597142 · Director · 10% owner

Riverstone Talos Energy Equityco LLC · CIK 0001741035 · Director · 10% owner

Riverstone V Talos Holdings, L.P. · CIK 0001741036 · Director · 10% owner

Riverstone Global Energy & Power Fund V (FT), L.P. · CIK 0001741037 · Director · 10% owner

Riverstone Energy GP V, LLC · CIK 0001597157 · Director · 10% owner

Riverstone Energy GP V Corp. · CIK 0001706510 · Director · 10% owner

Riverstone Talos Energy Debtco LLC · CIK 0001741038 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 16,207,181

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $19.00 to $19.44. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the 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.

F3 · ownership.nature: Following the transactions reported herein, includes 10,989,345 shares held of record by Riverstone Talos Energy Equityco LLC ("Riverstone Equityco"), 1,010,876 shares held of record by Riverstone Talos Energy Debtco LLC ("Riverstone Debtco"), 3,625,788 shares held of record by ILX Holdings II, LLC ("ILX II"), and 565,447 shares held of record by Riverstone V Castex 2014 Holdings, L.P. ("Castex 2014").

F4 · ownership.nature: David M. Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C., which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Riverstone Holdings"), which is the sole shareholder of Riverstone Energy GP V Corp., which is the managing member of Riverstone Energy GP V, LLC, which is the general partner of Riverstone Energy Partners V, L.P. ("Riverstone Energy Partners V"), which is the general partner of Riverstone Global Energy and Power Fund V (FT), L.P., which is the general partner of Riverstone V Talos Holdings, L.P., which is the managing member of Riverstone Equityco and the sole manager of Riverstone Debtco.

F5 · ownership.nature: In addition, Riverstone Energy Partners V owns an indirect interest in Castex 2014 and in ILX II. Each of the foregoing entity or person disclaims any such beneficial ownership of the securities reported herein except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose.

SEC source: 0001104659-22-046053 · tm2212765-1_4seq1.xml · nonDerivative · entry 1

RIVERSTONE HOLDINGS LLC · CIK 0001247497 · Director · 10% owner

Riverstone/Gower Mgmt Co Holdings, L.P. · CIK 0001706129 · Director · 10% owner

Riverstone Management Group, L.L.C. · CIK 0001705948 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 16,207,181

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $19.00 to $19.44. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the 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.

F3 · ownership.nature: Following the transactions reported herein, includes 10,989,345 shares held of record by Riverstone Talos Energy Equityco LLC ("Riverstone Equityco"), 1,010,876 shares held of record by Riverstone Talos Energy Debtco LLC ("Riverstone Debtco"), 3,625,788 shares held of record by ILX Holdings II, LLC ("ILX II"), and 565,447 shares held of record by Riverstone V Castex 2014 Holdings, L.P. ("Castex 2014").

F4 · ownership.nature: David M. Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C., which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Riverstone Holdings"), which is the sole shareholder of Riverstone Energy GP V Corp., which is the managing member of Riverstone Energy GP V, LLC, which is the general partner of Riverstone Energy Partners V, L.P. ("Riverstone Energy Partners V"), which is the general partner of Riverstone Global Energy and Power Fund V (FT), L.P., which is the general partner of Riverstone V Talos Holdings, L.P., which is the managing member of Riverstone Equityco and the sole manager of Riverstone Debtco.

F5 · ownership.nature: In addition, Riverstone Energy Partners V owns an indirect interest in Castex 2014 and in ILX II. Each of the foregoing entity or person disclaims any such beneficial ownership of the securities reported herein except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose.

SEC source: 0000899243-22-011967 · doc4.xml · derivative · entry 3

Kendall Donald R Jr · CIK 0001560289 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 12,103 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: The restricted stock units ("RSUs") were granted on March 8, 2021, vested on March 8, 2022, and settled on March 21, 2022. The RSUs represent the economic equivalent of one share of common stock, par value $0.01 per share (the "Common Stock"), of Talos Energy Inc. Pursuant to the terms of the award agreement, 60% of the RSUs were settled in Common Stock and 40% of the RSUs were settled in cash.

F1 · derivative.exercise_date: The restricted stock units ("RSUs") were granted on March 8, 2021, vested on March 8, 2022, and settled on March 21, 2022. The RSUs represent the economic equivalent of one share of common stock, par value $0.01 per share (the "Common Stock"), of Talos Energy Inc. Pursuant to the terms of the award agreement, 60% of the RSUs were settled in Common Stock and 40% of the RSUs were settled in cash.

F1 · derivative.expiration_date: The restricted stock units ("RSUs") were granted on March 8, 2021, vested on March 8, 2022, and settled on March 21, 2022. The RSUs represent the economic equivalent of one share of common stock, par value $0.01 per share (the "Common Stock"), of Talos Energy Inc. Pursuant to the terms of the award agreement, 60% of the RSUs were settled in Common Stock and 40% of the RSUs were settled in cash.

SEC source: 0000899243-22-011967 · doc4.xml · nonDerivative · entry 2

Kendall Donald R Jr · CIK 0001560289 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 21,191

F2 · security: Pursuant to the terms of the award agreement, 40% of the RSUs were settled in cash upon the settlement of the previously granted RSUs.

SEC source: 0000899243-22-011967 · doc4.xml · nonDerivative · entry 1

Kendall Donald R Jr · CIK 0001560289 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 26,032

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: The restricted stock units ("RSUs") were granted on March 8, 2021, vested on March 8, 2022, and settled on March 21, 2022. The RSUs represent the economic equivalent of one share of common stock, par value $0.01 per share (the "Common Stock"), of Talos Energy Inc. Pursuant to the terms of the award agreement, 60% of the RSUs were settled in Common Stock and 40% of the RSUs were settled in cash.

SEC source: 0000899243-22-010538 · doc4.xml · derivative · entry 3

Abendschein Robert D. · CIK 0001739409 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 20,172

Underlying: Common Stock · 10,086 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: The restricted stock units ("RSUs") vested on March 8, 2022 and were issued pursuant to the Talos Energy Inc. 2021 Long Term Incentive Plan, which was adopted on March 8, 2021. The RSUs were settled on a one-for-one basis in common stock, par value $0.01 per share (the "Common Stock"), of Talos Energy Inc.

F1 · derivative.exercise_date: The restricted stock units ("RSUs") vested on March 8, 2022 and were issued pursuant to the Talos Energy Inc. 2021 Long Term Incentive Plan, which was adopted on March 8, 2021. The RSUs were settled on a one-for-one basis in common stock, par value $0.01 per share (the "Common Stock"), of Talos Energy Inc.

F1 · derivative.expiration_date: The restricted stock units ("RSUs") vested on March 8, 2022 and were issued pursuant to the Talos Energy Inc. 2021 Long Term Incentive Plan, which was adopted on March 8, 2021. The RSUs were settled on a one-for-one basis in common stock, par value $0.01 per share (the "Common Stock"), of Talos Energy Inc.

SEC source: 0000899243-22-010538 · doc4.xml · nonDerivative · entry 2

Abendschein Robert D. · CIK 0001739409 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 263,038

F2 · security: Represents shares of Common Stock withheld to satisfy tax withholding obligations upon the vesting of previously granted RSUs.

SEC source: 0000899243-22-010538 · doc4.xml · nonDerivative · entry 1

Abendschein Robert D. · CIK 0001739409 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 265,553

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: The restricted stock units ("RSUs") vested on March 8, 2022 and were issued pursuant to the Talos Energy Inc. 2021 Long Term Incentive Plan, which was adopted on March 8, 2021. The RSUs were settled on a one-for-one basis in common stock, par value $0.01 per share (the "Common Stock"), of Talos Energy Inc.

SEC source: 0000899243-22-010545 · doc4.xml · derivative · entry 3

Duncan Timothy S. · CIK 0001739510 · Director · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 67,239

Underlying: Common Stock · 33,619 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: The restricted stock units ("RSUs") vested on March 8, 2022 and were issued pursuant to the Talos Energy Inc. 2021 Long Term Incentive Plan, which was adopted on March 8, 2021. The RSUs were settled on a one-for-one basis in common stock, par value $0.01 per share (the "Common Stock"), of Talos Energy Inc.

F1 · derivative.exercise_date: The restricted stock units ("RSUs") vested on March 8, 2022 and were issued pursuant to the Talos Energy Inc. 2021 Long Term Incentive Plan, which was adopted on March 8, 2021. The RSUs were settled on a one-for-one basis in common stock, par value $0.01 per share (the "Common Stock"), of Talos Energy Inc.

F1 · derivative.expiration_date: The restricted stock units ("RSUs") vested on March 8, 2022 and were issued pursuant to the Talos Energy Inc. 2021 Long Term Incentive Plan, which was adopted on March 8, 2021. The RSUs were settled on a one-for-one basis in common stock, par value $0.01 per share (the "Common Stock"), of Talos Energy Inc.

SEC source: 0000899243-22-010545 · doc4.xml · nonDerivative · entry 2

Duncan Timothy S. · CIK 0001739510 · Director · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 770,435

F2 · security: Represents shares of Common Stock withheld to satisfy tax withholding obligations upon the vesting of previously granted RSUs.

SEC source: 0000899243-22-010545 · doc4.xml · nonDerivative · entry 1

Duncan Timothy S. · CIK 0001739510 · Director · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 783,665

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: The restricted stock units ("RSUs") vested on March 8, 2022 and were issued pursuant to the Talos Energy Inc. 2021 Long Term Incentive Plan, which was adopted on March 8, 2021. The RSUs were settled on a one-for-one basis in common stock, par value $0.01 per share (the "Common Stock"), of Talos Energy Inc.

SEC source: 0001104659-22-032529 · tm228889-1_4seq1.xml · nonDerivative · entry 1

RIVERSTONE HOLDINGS LLC · CIK 0001247497 · Director · 10% owner

Riverstone/Gower Mgmt Co Holdings, L.P. · CIK 0001706129 · Director · 10% owner

Riverstone Management Group, L.L.C. · CIK 0001705948 · Director · 10% owner

LEUSCHEN DAVID M · CIK 0001222726 · Director · 10% owner

LAPEYRE PIERRE F JR · CIK 0001232151 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 16,270,024

F1 · ownership.nature: Following the transactions reported herein, includes 11,042,670 shares held of record by Riverstone Talos Energy Equityco LLC ("Riverstone Equityco"), 1,015,781 shares held of record by Riverstone Talos Energy Debtco LLC ("Riverstone Debtco"), 3,643,382 shares held of record by ILX Holdings II, LLC ("ILX II"), no shares held of record by ILX Holdings III, LLC ("ILX III"), no shares held of record by REL US Partnership, LLC ("REL US Partnership"), and 568,191 shares held of record by Riverstone V Castex 2014 Holdings, L.P. ("Castex 2014").

F2 · ownership.nature: David M. Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C., which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Riverstone Holdings"), which is the sole shareholder of Riverstone Energy GP V Corp., which is the managing member of Riverstone Energy GP V, LLC, which is the general partner of Riverstone Energy Partners V, L.P. ("Riverstone Energy Partners V"), which is the general partner of Riverstone Global Energy and Power Fund V (FT), L.P., which is the general partner of Riverstone V Talos Holdings, L.P., which is the managing member of Riverstone Equityco and the sole manager of Riverstone Debtco.

F3 · ownership.nature: In addition, Riverstone Energy Partners V owns an indirect interest in Castex 2014 and in ILX II, Riverstone Holdings is the owner of the ultimate general partner of ILX III, and Riverstone/Gower is the owner of the ultimate general partner of REL US Partnership. Each of the foregoing entity or person disclaims any such beneficial ownership of the securities reported herein except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose.

SEC source: 0001104659-22-032530 · tm228889-2_4seq1.xml · nonDerivative · entry 1

Riverstone Energy Partners V, L.P. · CIK 0001597142 · Director · 10% owner

Riverstone Talos Energy Equityco LLC · CIK 0001741035 · Director · 10% owner

Riverstone V Talos Holdings, L.P. · CIK 0001741036 · Director · 10% owner

Riverstone Global Energy & Power Fund V (FT), L.P. · CIK 0001741037 · Director · 10% owner

Riverstone Energy GP V, LLC · CIK 0001597157 · Director · 10% owner

Riverstone Energy GP V Corp. · CIK 0001706510 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 16,270,024

F1 · ownership.nature: Following the transactions reported herein, includes 11,042,670 shares held of record by Riverstone Talos Energy Equityco LLC ("Riverstone Equityco"), 1,015,781 shares held of record by Riverstone Talos Energy Debtco LLC ("Riverstone Debtco"), 3,643,382 shares held of record by ILX Holdings II, LLC ("ILX II"), no shares held of record by ILX Holdings III, LLC ("ILX III"), no shares held of record by REL US Partnership, LLC ("REL US Partnership"), and 568,191 shares held of record by Riverstone V Castex 2014 Holdings, L.P. ("Castex 2014").

F2 · ownership.nature: David M. Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C., which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Riverstone Holdings"), which is the sole shareholder of Riverstone Energy GP V Corp., which is the managing member of Riverstone Energy GP V, LLC, which is the general partner of Riverstone Energy Partners V, L.P. ("Riverstone Energy Partners V"), which is the general partner of Riverstone Global Energy and Power Fund V (FT), L.P., which is the general partner of Riverstone V Talos Holdings, L.P., which is the managing member of Riverstone Equityco and the sole manager of Riverstone Debtco.

F3 · ownership.nature: In addition, Riverstone Energy Partners V owns an indirect interest in Castex 2014 and in ILX II, Riverstone Holdings is the owner of the ultimate general partner of ILX III, and Riverstone/Gower is the owner of the ultimate general partner of REL US Partnership. Each of the foregoing entity or person disclaims any such beneficial ownership of the securities reported herein except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose.

SEC source: 0000899243-22-010544 · doc4.xml · derivative · entry 3

JUNEAU JOHN B · CIK 0001182585 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 12,103 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: The restricted stock units ("RSUs") were granted on March 8, 2021 and vested on March 8, 2022. The RSUs represent the economic equivalent of one share of common stock, par value $0.01 per share (the "Common Stock"), of Talos Energy Inc. Pursuant to the terms of the award agreement, 60% of the RSUs were settled in Common Stock and 40% of the RSUs were settled in cash.

F1 · derivative.exercise_date: The restricted stock units ("RSUs") were granted on March 8, 2021 and vested on March 8, 2022. The RSUs represent the economic equivalent of one share of common stock, par value $0.01 per share (the "Common Stock"), of Talos Energy Inc. Pursuant to the terms of the award agreement, 60% of the RSUs were settled in Common Stock and 40% of the RSUs were settled in cash.

F1 · derivative.expiration_date: The restricted stock units ("RSUs") were granted on March 8, 2021 and vested on March 8, 2022. The RSUs represent the economic equivalent of one share of common stock, par value $0.01 per share (the "Common Stock"), of Talos Energy Inc. Pursuant to the terms of the award agreement, 60% of the RSUs were settled in Common Stock and 40% of the RSUs were settled in cash.

SEC source: 0000899243-22-010544 · doc4.xml · nonDerivative · entry 2

JUNEAU JOHN B · CIK 0001182585 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 52,671

F2 · security: Pursuant to the terms of the award agreement, 40% of the RSUs were settled in cash upon the vesting of the previously granted RSUs.

SEC source: 0000899243-22-010544 · doc4.xml · nonDerivative · entry 1

JUNEAU JOHN B · CIK 0001182585 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 57,512

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: The restricted stock units ("RSUs") were granted on March 8, 2021 and vested on March 8, 2022. The RSUs represent the economic equivalent of one share of common stock, par value $0.01 per share (the "Common Stock"), of Talos Energy Inc. Pursuant to the terms of the award agreement, 60% of the RSUs were settled in Common Stock and 40% of the RSUs were settled in cash.

SEC source: 0000899243-22-010543 · doc4.xml · derivative · entry 3

SLEDGE CHARLES M · CIK 0001270321 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 12,103 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: The restricted stock units ("RSUs") were granted on March 8, 2021 and vested on March 8, 2022. The RSUs represent the economic equivalent of one share of common stock, par value $0.01 per share (the "Common Stock"), of Talos Energy Inc. Pursuant to the terms of the award agreement, 60% of the RSUs were settled in Common Stock and 40% of the RSUs were settled in cash.

F1 · derivative.exercise_date: The restricted stock units ("RSUs") were granted on March 8, 2021 and vested on March 8, 2022. The RSUs represent the economic equivalent of one share of common stock, par value $0.01 per share (the "Common Stock"), of Talos Energy Inc. Pursuant to the terms of the award agreement, 60% of the RSUs were settled in Common Stock and 40% of the RSUs were settled in cash.

F1 · derivative.expiration_date: The restricted stock units ("RSUs") were granted on March 8, 2021 and vested on March 8, 2022. The RSUs represent the economic equivalent of one share of common stock, par value $0.01 per share (the "Common Stock"), of Talos Energy Inc. Pursuant to the terms of the award agreement, 60% of the RSUs were settled in Common Stock and 40% of the RSUs were settled in cash.

SEC source: 0000899243-22-010543 · doc4.xml · nonDerivative · entry 2

SLEDGE CHARLES M · CIK 0001270321 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 27,372

F2 · security: Pursuant to the terms of the award agreement, 40% of the RSUs were settled in cash upon the vesting of the previously granted RSUs.

SEC source: 0000899243-22-010543 · doc4.xml · nonDerivative · entry 1

SLEDGE CHARLES M · CIK 0001270321 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 32,213

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: The restricted stock units ("RSUs") were granted on March 8, 2021 and vested on March 8, 2022. The RSUs represent the economic equivalent of one share of common stock, par value $0.01 per share (the "Common Stock"), of Talos Energy Inc. Pursuant to the terms of the award agreement, 60% of the RSUs were settled in Common Stock and 40% of the RSUs were settled in cash.

SEC source: 0000899243-22-010537 · doc4.xml · derivative · entry 3

GOLDMAN NEAL P · CIK 0001212774 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 17,398 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: The restricted stock units ("RSUs") were granted on March 8, 2021 and vested on March 8, 2022. The RSUs represent the economic equivalent of one share of common stock, par value $0.01 per share (the "Common Stock"), of Talos Energy Inc. Pursuant to the terms of the award agreement, 60% of the RSUs were settled in Common Stock and 40% of the RSUs were settled in cash.

F1 · derivative.exercise_date: The restricted stock units ("RSUs") were granted on March 8, 2021 and vested on March 8, 2022. The RSUs represent the economic equivalent of one share of common stock, par value $0.01 per share (the "Common Stock"), of Talos Energy Inc. Pursuant to the terms of the award agreement, 60% of the RSUs were settled in Common Stock and 40% of the RSUs were settled in cash.

F1 · derivative.expiration_date: The restricted stock units ("RSUs") were granted on March 8, 2021 and vested on March 8, 2022. The RSUs represent the economic equivalent of one share of common stock, par value $0.01 per share (the "Common Stock"), of Talos Energy Inc. Pursuant to the terms of the award agreement, 60% of the RSUs were settled in Common Stock and 40% of the RSUs were settled in cash.

SEC source: 0000899243-22-010537 · doc4.xml · nonDerivative · entry 2

GOLDMAN NEAL P · CIK 0001212774 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,681

F2 · security: Pursuant to the terms of the award agreement, 40% of the RSUs were settled in cash upon the vesting of the previously granted RSUs.

SEC source: 0000899243-22-010537 · doc4.xml · nonDerivative · entry 1

GOLDMAN NEAL P · CIK 0001212774 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 30,640

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: The restricted stock units ("RSUs") were granted on March 8, 2021 and vested on March 8, 2022. The RSUs represent the economic equivalent of one share of common stock, par value $0.01 per share (the "Common Stock"), of Talos Energy Inc. Pursuant to the terms of the award agreement, 60% of the RSUs were settled in Common Stock and 40% of the RSUs were settled in cash.

SEC source: 0000899243-22-010536 · doc4.xml · derivative · entry 3

Young, III Shannon E. · CIK 0001651794 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 26,056

Underlying: Common Stock · 13,027 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: The restricted stock units ("RSUs") vested on March 8, 2022 and were issued pursuant to the Talos Energy Inc. 2021 Long Term Incentive Plan, which was adopted on March 8, 2021. The RSUs were settled on a one-for-one basis in common stock, par value $0.01 per share (the "Common Stock"), of Talos Energy Inc.

F1 · derivative.exercise_date: The restricted stock units ("RSUs") vested on March 8, 2022 and were issued pursuant to the Talos Energy Inc. 2021 Long Term Incentive Plan, which was adopted on March 8, 2021. The RSUs were settled on a one-for-one basis in common stock, par value $0.01 per share (the "Common Stock"), of Talos Energy Inc.

F1 · derivative.expiration_date: The restricted stock units ("RSUs") vested on March 8, 2022 and were issued pursuant to the Talos Energy Inc. 2021 Long Term Incentive Plan, which was adopted on March 8, 2021. The RSUs were settled on a one-for-one basis in common stock, par value $0.01 per share (the "Common Stock"), of Talos Energy Inc.

SEC source: 0000899243-22-010536 · doc4.xml · nonDerivative · entry 2

Young, III Shannon E. · CIK 0001651794 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 281,110

F2 · security: Represents shares of Common Stock withheld to satisfy tax withholding obligations upon the vesting of previously granted RSUs.