TALO

SEC source: 0000899243-21-010823 · 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 · 12,168 shares

Expires 2021-03-05

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") represent the economic equivalent of one share of common stock, par value $0.01 per share, of Talos Energy Inc., a Delaware corporation ("Common Stock"). 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 · price: The restricted stock units ("RSUs") represent the economic equivalent of one share of common stock, par value $0.01 per share, of Talos Energy Inc., a Delaware corporation ("Common Stock"). 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: 0000899243-21-010823 · doc4.xml · nonDerivative · entry 2

SLEDGE CHARLES M · CIK 0001270321 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 20,110

SEC source: 0000899243-21-010823 · doc4.xml · nonDerivative · entry 1

SLEDGE CHARLES M · CIK 0001270321 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,978

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") represent the economic equivalent of one share of common stock, par value $0.01 per share, of Talos Energy Inc., a Delaware corporation ("Common Stock"). 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: 0000899243-21-010821 · doc4.xml · derivative · entry 3

TRIMBLE JAMES M · CIK 0001195182 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 12,168 shares

Expires 2021-03-05

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") represent the economic equivalent of one share of common stock, par value $0.01 per share, of Talos Energy Inc., a Delaware corporation ("Common Stock"). 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 · price: The restricted stock units ("RSUs") represent the economic equivalent of one share of common stock, par value $0.01 per share, of Talos Energy Inc., a Delaware corporation ("Common Stock"). 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: 0000899243-21-010821 · doc4.xml · nonDerivative · entry 2

TRIMBLE JAMES M · CIK 0001195182 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 20,110

SEC source: 0000899243-21-010821 · doc4.xml · nonDerivative · entry 1

TRIMBLE JAMES M · CIK 0001195182 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,978

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") represent the economic equivalent of one share of common stock, par value $0.01 per share, of Talos Energy Inc., a Delaware corporation ("Common Stock"). 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: 0000899243-21-010827 · 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 · 12,168 shares

Expires 2021-03-05

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") represent the economic equivalent of one share of common stock, par value $0.01 per share, of Talos Energy Inc., a Delaware corporation ("Common Stock"). 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 · price: The restricted stock units ("RSUs") represent the economic equivalent of one share of common stock, par value $0.01 per share, of Talos Energy Inc., a Delaware corporation ("Common Stock"). 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: 0000899243-21-010827 · doc4.xml · nonDerivative · entry 2

Kendall Donald R Jr · CIK 0001560289 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,929

SEC source: 0000899243-21-010827 · doc4.xml · nonDerivative · entry 1

Kendall Donald R Jr · CIK 0001560289 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,797

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") represent the economic equivalent of one share of common stock, par value $0.01 per share, of Talos Energy Inc., a Delaware corporation ("Common Stock"). 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: 0000899243-21-010822 · doc4.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 75,666

F1 · shares: Represents shares withheld by Talos Energy Inc. (the "Issuer") to satisfy tax withholding obligations upon the vesting of previously granted restricted stock units issued pursuant to the Talos Energy Inc. Long Term Incentive Plan (the "2018 LTIP") dated May 18, 2018.

SEC source: 0000899243-21-010818 · doc4.xml · nonDerivative · entry 1

Parker John Arthur · CIK 0001739609 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 67,848

F1 · shares: Represents shares withheld by Talos Energy Inc. (the "Issuer") to satisfy tax withholding obligations upon the vesting of previously granted restricted stock units issued pursuant to the Talos Energy Inc. Long Term Incentive Plan (the "2018 LTIP") dated May 18, 2018.

SEC source: 0000899243-21-010825 · doc4.xml · nonDerivative · entry 1

Babcock Gregory · CIK 0001787295 · Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,954

F1 · shares: Represents shares withheld by Talos Energy Inc. (the "Issuer") to satisfy tax withholding obligations upon the vesting of previously granted restricted stock units issued pursuant to the Talos Energy Inc. Long Term Incentive Plan (the "2018 LTIP") dated May 18, 2018.

SEC source: 0000899243-21-010816 · doc4.xml · nonDerivative · entry 1

Moss William S. III · CIK 0001739557 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 65,025

F1 · shares: Represents shares withheld by Talos Energy Inc. (the "Issuer") to satisfy tax withholding obligations upon the vesting of previously granted restricted stock units issued pursuant to the Talos Energy Inc. Long Term Incentive Plan (the "2018 LTIP") dated May 18, 2018.

SEC source: 0000899243-21-011052 · doc4a.xml · nonDerivative · entry 1

Moss William S. III · CIK 0001739557 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 65,025

F1 · shares: Represents shares withheld by Talos Energy Inc. (the "Issuer") to satisfy tax withholding obligations upon the vesting of previously granted restricted stock units issued pursuant to the Talos Energy Inc. Long Term Incentive Plan (the "2018 LTIP") dated May 18, 2018.

SEC source: 0000899243-20-022118 · doc4.xml · nonDerivative · entry 1

Abendschein Robert D. · CIK 0001739409 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 95,628

F1 · price: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $8.20 to $8.44, inclusive. The reporting person undertakes to provide to Talos Energy Inc. (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 purchased at each separate price within the ranges set forth in this footnote (1) to this Form 4.

SEC source: 0000899243-20-013245 · doc4.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 230,688

SEC source: 0000899243-20-013248 · doc4.xml · nonDerivative · entry 1

Parker John Arthur · CIK 0001739609 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 73,860

SEC source: 0000899243-20-013247 · doc4.xml · nonDerivative · entry 1

Moss William S. III · CIK 0001739557 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 70,810

SEC source: 0000899243-20-013243 · doc4.xml · nonDerivative · entry 1

Babcock Gregory · CIK 0001787295 · Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,180

SEC source: 0001104659-20-041820 · a4.xml · derivative · entry 10

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 · By Castex Energy 2014, LLC

Disclosed balance after: 0

Underlying: Common Stock · 1,400,000 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: On February 28, 2020, as partial consideration for the Issuer's acquisition of certain limited liability company interests, the Issuer issued an aggregate 110,000 shares of Series A Convertible Preferred Stock to ILX Holdings, LLC ("ILX Holdings"), ILX Holdings II, LLC ("ILX Holdings II"), ILX Holdings III, LLC ("ILX Holdings III") and Castex Energy 2014, LLC ("Castex 2014"). Each share of Series A Convertible Preferred Stock converted into 100 shares of the Issuer's common stock on March 30, 2020, which is 20 calendar days following the stated date of distribution to the Issuer's stockholders of a definitive Information Statement on Schedule 14C relating to the conversion of such Series A Convertible Preferred Stock.

F1 · price: On February 28, 2020, as partial consideration for the Issuer's acquisition of certain limited liability company interests, the Issuer issued an aggregate 110,000 shares of Series A Convertible Preferred Stock to ILX Holdings, LLC ("ILX Holdings"), ILX Holdings II, LLC ("ILX Holdings II"), ILX Holdings III, LLC ("ILX Holdings III") and Castex Energy 2014, LLC ("Castex 2014"). Each share of Series A Convertible Preferred Stock converted into 100 shares of the Issuer's common stock on March 30, 2020, which is 20 calendar days following the stated date of distribution to the Issuer's stockholders of a definitive Information Statement on Schedule 14C relating to the conversion of such Series A Convertible Preferred Stock.

F1 · derivative.exercise_date: On February 28, 2020, as partial consideration for the Issuer's acquisition of certain limited liability company interests, the Issuer issued an aggregate 110,000 shares of Series A Convertible Preferred Stock to ILX Holdings, LLC ("ILX Holdings"), ILX Holdings II, LLC ("ILX Holdings II"), ILX Holdings III, LLC ("ILX Holdings III") and Castex Energy 2014, LLC ("Castex 2014"). Each share of Series A Convertible Preferred Stock converted into 100 shares of the Issuer's common stock on March 30, 2020, which is 20 calendar days following the stated date of distribution to the Issuer's stockholders of a definitive Information Statement on Schedule 14C relating to the conversion of such Series A Convertible Preferred Stock.

F1 · derivative.expiration_date: On February 28, 2020, as partial consideration for the Issuer's acquisition of certain limited liability company interests, the Issuer issued an aggregate 110,000 shares of Series A Convertible Preferred Stock to ILX Holdings, LLC ("ILX Holdings"), ILX Holdings II, LLC ("ILX Holdings II"), ILX Holdings III, LLC ("ILX Holdings III") and Castex Energy 2014, LLC ("Castex 2014"). Each share of Series A Convertible Preferred Stock converted into 100 shares of the Issuer's common stock on March 30, 2020, which is 20 calendar days following the stated date of distribution to the Issuer's stockholders of a definitive Information Statement on Schedule 14C relating to the conversion of such Series A Convertible Preferred Stock.

F2 · ownership.nature: David Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C. ("Riverstone Management"), which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Holdings").

F3 · ownership.nature: Holdings is the sole shareholder of Riverstone Energy GP V Corp ("Riverstone Corp"), which is the managing member of Riverstone Energy GP V, LLC ("Riverstone GP"), 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. ("Riverstone Energy Fund V"), which is the general partner of Riverstone V Talos Holdings, L.P. ("Riverstone Aggregator"), which is the managing member of Riverstone Talos Energy Equityco LLC ("Riverstone Equityco") and the sole manager of Riverstone Talos Energy Debtco LLC ("Riverstone Debtco"). In addition of Riverstone Energy Partners V and Riverstone Energy Fund V own an indirect interest in Castex 2014, and Riverstone Energy Partners V owns an indirect interest in ILX Holdings II.

F5 · ownership.nature: Each of Messrs. Leuschen and Lapeyre, Riverstone Management, Riverstone/Gower and Holdings may be deemed to share beneficial ownership of the securities held of record by ILX Holdings and ILX Holdings III, and each of the foregoing entities and persons, together with Riverstone Corp, Riverstone GP, Riverstone Energy Partners V and Riverstone Energy Fund V may be deemed to share beneficial ownership of the securities held of record by Castex 2014 and ILX Holdings II, and such entities and persons, together with Riverstone Aggregator, may be deemed to share beneficial ownership of the securities held of record by Riverstone Equityco and Riverstone Debtco. Each such entity or person disclaims any such beneficial ownership of such securities 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: 0001104659-20-041820 · a4.xml · derivative · entry 9

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 · By ILX Holdings III, LLC

Disclosed balance after: 0

Underlying: Common Stock · 130,000 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: On February 28, 2020, as partial consideration for the Issuer's acquisition of certain limited liability company interests, the Issuer issued an aggregate 110,000 shares of Series A Convertible Preferred Stock to ILX Holdings, LLC ("ILX Holdings"), ILX Holdings II, LLC ("ILX Holdings II"), ILX Holdings III, LLC ("ILX Holdings III") and Castex Energy 2014, LLC ("Castex 2014"). Each share of Series A Convertible Preferred Stock converted into 100 shares of the Issuer's common stock on March 30, 2020, which is 20 calendar days following the stated date of distribution to the Issuer's stockholders of a definitive Information Statement on Schedule 14C relating to the conversion of such Series A Convertible Preferred Stock.

F1 · price: On February 28, 2020, as partial consideration for the Issuer's acquisition of certain limited liability company interests, the Issuer issued an aggregate 110,000 shares of Series A Convertible Preferred Stock to ILX Holdings, LLC ("ILX Holdings"), ILX Holdings II, LLC ("ILX Holdings II"), ILX Holdings III, LLC ("ILX Holdings III") and Castex Energy 2014, LLC ("Castex 2014"). Each share of Series A Convertible Preferred Stock converted into 100 shares of the Issuer's common stock on March 30, 2020, which is 20 calendar days following the stated date of distribution to the Issuer's stockholders of a definitive Information Statement on Schedule 14C relating to the conversion of such Series A Convertible Preferred Stock.

F1 · derivative.exercise_date: On February 28, 2020, as partial consideration for the Issuer's acquisition of certain limited liability company interests, the Issuer issued an aggregate 110,000 shares of Series A Convertible Preferred Stock to ILX Holdings, LLC ("ILX Holdings"), ILX Holdings II, LLC ("ILX Holdings II"), ILX Holdings III, LLC ("ILX Holdings III") and Castex Energy 2014, LLC ("Castex 2014"). Each share of Series A Convertible Preferred Stock converted into 100 shares of the Issuer's common stock on March 30, 2020, which is 20 calendar days following the stated date of distribution to the Issuer's stockholders of a definitive Information Statement on Schedule 14C relating to the conversion of such Series A Convertible Preferred Stock.

F1 · derivative.expiration_date: On February 28, 2020, as partial consideration for the Issuer's acquisition of certain limited liability company interests, the Issuer issued an aggregate 110,000 shares of Series A Convertible Preferred Stock to ILX Holdings, LLC ("ILX Holdings"), ILX Holdings II, LLC ("ILX Holdings II"), ILX Holdings III, LLC ("ILX Holdings III") and Castex Energy 2014, LLC ("Castex 2014"). Each share of Series A Convertible Preferred Stock converted into 100 shares of the Issuer's common stock on March 30, 2020, which is 20 calendar days following the stated date of distribution to the Issuer's stockholders of a definitive Information Statement on Schedule 14C relating to the conversion of such Series A Convertible Preferred Stock.

F2 · ownership.nature: David Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C. ("Riverstone Management"), which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Holdings").

F4 · ownership.nature: Holdings is the owner of the ultimate general partners of each of ILX Holdings and ILX Holdings III.

F5 · ownership.nature: Each of Messrs. Leuschen and Lapeyre, Riverstone Management, Riverstone/Gower and Holdings may be deemed to share beneficial ownership of the securities held of record by ILX Holdings and ILX Holdings III, and each of the foregoing entities and persons, together with Riverstone Corp, Riverstone GP, Riverstone Energy Partners V and Riverstone Energy Fund V may be deemed to share beneficial ownership of the securities held of record by Castex 2014 and ILX Holdings II, and such entities and persons, together with Riverstone Aggregator, may be deemed to share beneficial ownership of the securities held of record by Riverstone Equityco and Riverstone Debtco. Each such entity or person disclaims any such beneficial ownership of such securities 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: 0001104659-20-041820 · a4.xml · derivative · entry 8

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 · By ILX Holdings II, LLC

Disclosed balance after: 0

Underlying: Common Stock · 4,510,000 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: On February 28, 2020, as partial consideration for the Issuer's acquisition of certain limited liability company interests, the Issuer issued an aggregate 110,000 shares of Series A Convertible Preferred Stock to ILX Holdings, LLC ("ILX Holdings"), ILX Holdings II, LLC ("ILX Holdings II"), ILX Holdings III, LLC ("ILX Holdings III") and Castex Energy 2014, LLC ("Castex 2014"). Each share of Series A Convertible Preferred Stock converted into 100 shares of the Issuer's common stock on March 30, 2020, which is 20 calendar days following the stated date of distribution to the Issuer's stockholders of a definitive Information Statement on Schedule 14C relating to the conversion of such Series A Convertible Preferred Stock.

F1 · price: On February 28, 2020, as partial consideration for the Issuer's acquisition of certain limited liability company interests, the Issuer issued an aggregate 110,000 shares of Series A Convertible Preferred Stock to ILX Holdings, LLC ("ILX Holdings"), ILX Holdings II, LLC ("ILX Holdings II"), ILX Holdings III, LLC ("ILX Holdings III") and Castex Energy 2014, LLC ("Castex 2014"). Each share of Series A Convertible Preferred Stock converted into 100 shares of the Issuer's common stock on March 30, 2020, which is 20 calendar days following the stated date of distribution to the Issuer's stockholders of a definitive Information Statement on Schedule 14C relating to the conversion of such Series A Convertible Preferred Stock.

F1 · derivative.exercise_date: On February 28, 2020, as partial consideration for the Issuer's acquisition of certain limited liability company interests, the Issuer issued an aggregate 110,000 shares of Series A Convertible Preferred Stock to ILX Holdings, LLC ("ILX Holdings"), ILX Holdings II, LLC ("ILX Holdings II"), ILX Holdings III, LLC ("ILX Holdings III") and Castex Energy 2014, LLC ("Castex 2014"). Each share of Series A Convertible Preferred Stock converted into 100 shares of the Issuer's common stock on March 30, 2020, which is 20 calendar days following the stated date of distribution to the Issuer's stockholders of a definitive Information Statement on Schedule 14C relating to the conversion of such Series A Convertible Preferred Stock.

F1 · derivative.expiration_date: On February 28, 2020, as partial consideration for the Issuer's acquisition of certain limited liability company interests, the Issuer issued an aggregate 110,000 shares of Series A Convertible Preferred Stock to ILX Holdings, LLC ("ILX Holdings"), ILX Holdings II, LLC ("ILX Holdings II"), ILX Holdings III, LLC ("ILX Holdings III") and Castex Energy 2014, LLC ("Castex 2014"). Each share of Series A Convertible Preferred Stock converted into 100 shares of the Issuer's common stock on March 30, 2020, which is 20 calendar days following the stated date of distribution to the Issuer's stockholders of a definitive Information Statement on Schedule 14C relating to the conversion of such Series A Convertible Preferred Stock.

F2 · ownership.nature: David Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C. ("Riverstone Management"), which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Holdings").

F3 · ownership.nature: Holdings is the sole shareholder of Riverstone Energy GP V Corp ("Riverstone Corp"), which is the managing member of Riverstone Energy GP V, LLC ("Riverstone GP"), 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. ("Riverstone Energy Fund V"), which is the general partner of Riverstone V Talos Holdings, L.P. ("Riverstone Aggregator"), which is the managing member of Riverstone Talos Energy Equityco LLC ("Riverstone Equityco") and the sole manager of Riverstone Talos Energy Debtco LLC ("Riverstone Debtco"). In addition of Riverstone Energy Partners V and Riverstone Energy Fund V own an indirect interest in Castex 2014, and Riverstone Energy Partners V owns an indirect interest in ILX Holdings II.

F5 · ownership.nature: Each of Messrs. Leuschen and Lapeyre, Riverstone Management, Riverstone/Gower and Holdings may be deemed to share beneficial ownership of the securities held of record by ILX Holdings and ILX Holdings III, and each of the foregoing entities and persons, together with Riverstone Corp, Riverstone GP, Riverstone Energy Partners V and Riverstone Energy Fund V may be deemed to share beneficial ownership of the securities held of record by Castex 2014 and ILX Holdings II, and such entities and persons, together with Riverstone Aggregator, may be deemed to share beneficial ownership of the securities held of record by Riverstone Equityco and Riverstone Debtco. Each such entity or person disclaims any such beneficial ownership of such securities 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: 0001104659-20-041820 · a4.xml · derivative · entry 7

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 · By ILX Holdings, LLC

Disclosed balance after: 0

Underlying: Common Stock · 4,960,000 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: On February 28, 2020, as partial consideration for the Issuer's acquisition of certain limited liability company interests, the Issuer issued an aggregate 110,000 shares of Series A Convertible Preferred Stock to ILX Holdings, LLC ("ILX Holdings"), ILX Holdings II, LLC ("ILX Holdings II"), ILX Holdings III, LLC ("ILX Holdings III") and Castex Energy 2014, LLC ("Castex 2014"). Each share of Series A Convertible Preferred Stock converted into 100 shares of the Issuer's common stock on March 30, 2020, which is 20 calendar days following the stated date of distribution to the Issuer's stockholders of a definitive Information Statement on Schedule 14C relating to the conversion of such Series A Convertible Preferred Stock.

F1 · price: On February 28, 2020, as partial consideration for the Issuer's acquisition of certain limited liability company interests, the Issuer issued an aggregate 110,000 shares of Series A Convertible Preferred Stock to ILX Holdings, LLC ("ILX Holdings"), ILX Holdings II, LLC ("ILX Holdings II"), ILX Holdings III, LLC ("ILX Holdings III") and Castex Energy 2014, LLC ("Castex 2014"). Each share of Series A Convertible Preferred Stock converted into 100 shares of the Issuer's common stock on March 30, 2020, which is 20 calendar days following the stated date of distribution to the Issuer's stockholders of a definitive Information Statement on Schedule 14C relating to the conversion of such Series A Convertible Preferred Stock.

F1 · derivative.exercise_date: On February 28, 2020, as partial consideration for the Issuer's acquisition of certain limited liability company interests, the Issuer issued an aggregate 110,000 shares of Series A Convertible Preferred Stock to ILX Holdings, LLC ("ILX Holdings"), ILX Holdings II, LLC ("ILX Holdings II"), ILX Holdings III, LLC ("ILX Holdings III") and Castex Energy 2014, LLC ("Castex 2014"). Each share of Series A Convertible Preferred Stock converted into 100 shares of the Issuer's common stock on March 30, 2020, which is 20 calendar days following the stated date of distribution to the Issuer's stockholders of a definitive Information Statement on Schedule 14C relating to the conversion of such Series A Convertible Preferred Stock.

F1 · derivative.expiration_date: On February 28, 2020, as partial consideration for the Issuer's acquisition of certain limited liability company interests, the Issuer issued an aggregate 110,000 shares of Series A Convertible Preferred Stock to ILX Holdings, LLC ("ILX Holdings"), ILX Holdings II, LLC ("ILX Holdings II"), ILX Holdings III, LLC ("ILX Holdings III") and Castex Energy 2014, LLC ("Castex 2014"). Each share of Series A Convertible Preferred Stock converted into 100 shares of the Issuer's common stock on March 30, 2020, which is 20 calendar days following the stated date of distribution to the Issuer's stockholders of a definitive Information Statement on Schedule 14C relating to the conversion of such Series A Convertible Preferred Stock.

F2 · ownership.nature: David Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C. ("Riverstone Management"), which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Holdings").

F4 · ownership.nature: Holdings is the owner of the ultimate general partners of each of ILX Holdings and ILX Holdings III.

F5 · ownership.nature: Each of Messrs. Leuschen and Lapeyre, Riverstone Management, Riverstone/Gower and Holdings may be deemed to share beneficial ownership of the securities held of record by ILX Holdings and ILX Holdings III, and each of the foregoing entities and persons, together with Riverstone Corp, Riverstone GP, Riverstone Energy Partners V and Riverstone Energy Fund V may be deemed to share beneficial ownership of the securities held of record by Castex 2014 and ILX Holdings II, and such entities and persons, together with Riverstone Aggregator, may be deemed to share beneficial ownership of the securities held of record by Riverstone Equityco and Riverstone Debtco. Each such entity or person disclaims any such beneficial ownership of such securities 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: 0001104659-20-041820 · a4.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 · By Castex Energy 2014, LLC

Disclosed balance after: 1,400,000

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: On February 28, 2020, as partial consideration for the Issuer's acquisition of certain limited liability company interests, the Issuer issued an aggregate 110,000 shares of Series A Convertible Preferred Stock to ILX Holdings, LLC ("ILX Holdings"), ILX Holdings II, LLC ("ILX Holdings II"), ILX Holdings III, LLC ("ILX Holdings III") and Castex Energy 2014, LLC ("Castex 2014"). Each share of Series A Convertible Preferred Stock converted into 100 shares of the Issuer's common stock on March 30, 2020, which is 20 calendar days following the stated date of distribution to the Issuer's stockholders of a definitive Information Statement on Schedule 14C relating to the conversion of such Series A Convertible Preferred Stock.

F2 · ownership.nature: David Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C. ("Riverstone Management"), which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Holdings").

F3 · ownership.nature: Holdings is the sole shareholder of Riverstone Energy GP V Corp ("Riverstone Corp"), which is the managing member of Riverstone Energy GP V, LLC ("Riverstone GP"), 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. ("Riverstone Energy Fund V"), which is the general partner of Riverstone V Talos Holdings, L.P. ("Riverstone Aggregator"), which is the managing member of Riverstone Talos Energy Equityco LLC ("Riverstone Equityco") and the sole manager of Riverstone Talos Energy Debtco LLC ("Riverstone Debtco"). In addition of Riverstone Energy Partners V and Riverstone Energy Fund V own an indirect interest in Castex 2014, and Riverstone Energy Partners V owns an indirect interest in ILX Holdings II.

F5 · ownership.nature: Each of Messrs. Leuschen and Lapeyre, Riverstone Management, Riverstone/Gower and Holdings may be deemed to share beneficial ownership of the securities held of record by ILX Holdings and ILX Holdings III, and each of the foregoing entities and persons, together with Riverstone Corp, Riverstone GP, Riverstone Energy Partners V and Riverstone Energy Fund V may be deemed to share beneficial ownership of the securities held of record by Castex 2014 and ILX Holdings II, and such entities and persons, together with Riverstone Aggregator, may be deemed to share beneficial ownership of the securities held of record by Riverstone Equityco and Riverstone Debtco. Each such entity or person disclaims any such beneficial ownership of such securities 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: 0001104659-20-041820 · a4.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 · By ILX Holdings III, LLC

Disclosed balance after: 130,000

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: On February 28, 2020, as partial consideration for the Issuer's acquisition of certain limited liability company interests, the Issuer issued an aggregate 110,000 shares of Series A Convertible Preferred Stock to ILX Holdings, LLC ("ILX Holdings"), ILX Holdings II, LLC ("ILX Holdings II"), ILX Holdings III, LLC ("ILX Holdings III") and Castex Energy 2014, LLC ("Castex 2014"). Each share of Series A Convertible Preferred Stock converted into 100 shares of the Issuer's common stock on March 30, 2020, which is 20 calendar days following the stated date of distribution to the Issuer's stockholders of a definitive Information Statement on Schedule 14C relating to the conversion of such Series A Convertible Preferred Stock.

F2 · ownership.nature: David Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C. ("Riverstone Management"), which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Holdings").

F4 · ownership.nature: Holdings is the owner of the ultimate general partners of each of ILX Holdings and ILX Holdings III.

F5 · ownership.nature: Each of Messrs. Leuschen and Lapeyre, Riverstone Management, Riverstone/Gower and Holdings may be deemed to share beneficial ownership of the securities held of record by ILX Holdings and ILX Holdings III, and each of the foregoing entities and persons, together with Riverstone Corp, Riverstone GP, Riverstone Energy Partners V and Riverstone Energy Fund V may be deemed to share beneficial ownership of the securities held of record by Castex 2014 and ILX Holdings II, and such entities and persons, together with Riverstone Aggregator, may be deemed to share beneficial ownership of the securities held of record by Riverstone Equityco and Riverstone Debtco. Each such entity or person disclaims any such beneficial ownership of such securities 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: 0001104659-20-041820 · a4.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 · By ILX Holdings II, LLC

Disclosed balance after: 4,510,000

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: On February 28, 2020, as partial consideration for the Issuer's acquisition of certain limited liability company interests, the Issuer issued an aggregate 110,000 shares of Series A Convertible Preferred Stock to ILX Holdings, LLC ("ILX Holdings"), ILX Holdings II, LLC ("ILX Holdings II"), ILX Holdings III, LLC ("ILX Holdings III") and Castex Energy 2014, LLC ("Castex 2014"). Each share of Series A Convertible Preferred Stock converted into 100 shares of the Issuer's common stock on March 30, 2020, which is 20 calendar days following the stated date of distribution to the Issuer's stockholders of a definitive Information Statement on Schedule 14C relating to the conversion of such Series A Convertible Preferred Stock.

F2 · ownership.nature: David Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C. ("Riverstone Management"), which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Holdings").

F3 · ownership.nature: Holdings is the sole shareholder of Riverstone Energy GP V Corp ("Riverstone Corp"), which is the managing member of Riverstone Energy GP V, LLC ("Riverstone GP"), 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. ("Riverstone Energy Fund V"), which is the general partner of Riverstone V Talos Holdings, L.P. ("Riverstone Aggregator"), which is the managing member of Riverstone Talos Energy Equityco LLC ("Riverstone Equityco") and the sole manager of Riverstone Talos Energy Debtco LLC ("Riverstone Debtco"). In addition of Riverstone Energy Partners V and Riverstone Energy Fund V own an indirect interest in Castex 2014, and Riverstone Energy Partners V owns an indirect interest in ILX Holdings II.

F5 · ownership.nature: Each of Messrs. Leuschen and Lapeyre, Riverstone Management, Riverstone/Gower and Holdings may be deemed to share beneficial ownership of the securities held of record by ILX Holdings and ILX Holdings III, and each of the foregoing entities and persons, together with Riverstone Corp, Riverstone GP, Riverstone Energy Partners V and Riverstone Energy Fund V may be deemed to share beneficial ownership of the securities held of record by Castex 2014 and ILX Holdings II, and such entities and persons, together with Riverstone Aggregator, may be deemed to share beneficial ownership of the securities held of record by Riverstone Equityco and Riverstone Debtco. Each such entity or person disclaims any such beneficial ownership of such securities 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: 0001104659-20-041820 · a4.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 · By ILX Holdings, LLC

Disclosed balance after: 4,960,000

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: On February 28, 2020, as partial consideration for the Issuer's acquisition of certain limited liability company interests, the Issuer issued an aggregate 110,000 shares of Series A Convertible Preferred Stock to ILX Holdings, LLC ("ILX Holdings"), ILX Holdings II, LLC ("ILX Holdings II"), ILX Holdings III, LLC ("ILX Holdings III") and Castex Energy 2014, LLC ("Castex 2014"). Each share of Series A Convertible Preferred Stock converted into 100 shares of the Issuer's common stock on March 30, 2020, which is 20 calendar days following the stated date of distribution to the Issuer's stockholders of a definitive Information Statement on Schedule 14C relating to the conversion of such Series A Convertible Preferred Stock.

F2 · ownership.nature: David Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C. ("Riverstone Management"), which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Holdings").

F4 · ownership.nature: Holdings is the owner of the ultimate general partners of each of ILX Holdings and ILX Holdings III.

F5 · ownership.nature: Each of Messrs. Leuschen and Lapeyre, Riverstone Management, Riverstone/Gower and Holdings may be deemed to share beneficial ownership of the securities held of record by ILX Holdings and ILX Holdings III, and each of the foregoing entities and persons, together with Riverstone Corp, Riverstone GP, Riverstone Energy Partners V and Riverstone Energy Fund V may be deemed to share beneficial ownership of the securities held of record by Castex 2014 and ILX Holdings II, and such entities and persons, together with Riverstone Aggregator, may be deemed to share beneficial ownership of the securities held of record by Riverstone Equityco and Riverstone Debtco. Each such entity or person disclaims any such beneficial ownership of such securities 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: 0001104659-20-041822 · a4.xml · derivative · entry 10

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 · By Castex Energy 2014, LLC

Disclosed balance after: 0

Underlying: Common Stock · 1,400,000 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: On February 28, 2020, as partial consideration for the Issuer's acquisition of certain limited liability company interests, the Issuer issued an aggregate 110,000 shares of Series A Convertible Preferred Stock to ILX Holdings, LLC ("ILX Holdings"), ILX Holdings II, LLC ("ILX Holdings II"), ILX Holdings III, LLC ("ILX Holdings III") and Castex Energy 2014, LLC ("Castex 2014"). Each share of Series A Convertible Preferred Stock converted into 100 shares of the Issuer's common stock on March 30, 2020, which is 20 calendar days following the stated date of distribution to the Issuer's stockholders of a definitive Information Statement on Schedule 14C relating to the conversion of such Series A Convertible Preferred Stock.

F1 · price: On February 28, 2020, as partial consideration for the Issuer's acquisition of certain limited liability company interests, the Issuer issued an aggregate 110,000 shares of Series A Convertible Preferred Stock to ILX Holdings, LLC ("ILX Holdings"), ILX Holdings II, LLC ("ILX Holdings II"), ILX Holdings III, LLC ("ILX Holdings III") and Castex Energy 2014, LLC ("Castex 2014"). Each share of Series A Convertible Preferred Stock converted into 100 shares of the Issuer's common stock on March 30, 2020, which is 20 calendar days following the stated date of distribution to the Issuer's stockholders of a definitive Information Statement on Schedule 14C relating to the conversion of such Series A Convertible Preferred Stock.

F1 · derivative.exercise_date: On February 28, 2020, as partial consideration for the Issuer's acquisition of certain limited liability company interests, the Issuer issued an aggregate 110,000 shares of Series A Convertible Preferred Stock to ILX Holdings, LLC ("ILX Holdings"), ILX Holdings II, LLC ("ILX Holdings II"), ILX Holdings III, LLC ("ILX Holdings III") and Castex Energy 2014, LLC ("Castex 2014"). Each share of Series A Convertible Preferred Stock converted into 100 shares of the Issuer's common stock on March 30, 2020, which is 20 calendar days following the stated date of distribution to the Issuer's stockholders of a definitive Information Statement on Schedule 14C relating to the conversion of such Series A Convertible Preferred Stock.

F1 · derivative.expiration_date: On February 28, 2020, as partial consideration for the Issuer's acquisition of certain limited liability company interests, the Issuer issued an aggregate 110,000 shares of Series A Convertible Preferred Stock to ILX Holdings, LLC ("ILX Holdings"), ILX Holdings II, LLC ("ILX Holdings II"), ILX Holdings III, LLC ("ILX Holdings III") and Castex Energy 2014, LLC ("Castex 2014"). Each share of Series A Convertible Preferred Stock converted into 100 shares of the Issuer's common stock on March 30, 2020, which is 20 calendar days following the stated date of distribution to the Issuer's stockholders of a definitive Information Statement on Schedule 14C relating to the conversion of such Series A Convertible Preferred Stock.

F2 · ownership.nature: David Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C. ("Riverstone Management"), which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Holdings").

F3 · ownership.nature: Holdings is the sole shareholder of Riverstone Energy GP V Corp ("Riverstone Corp"), which is the managing member of Riverstone Energy GP V, LLC ("Riverstone GP"), 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. ("Riverstone Energy Fund V"), which is the general partner of Riverstone V Talos Holdings, L.P. ("Riverstone Aggregator"), which is the managing member of Riverstone Talos Energy Equityco LLC ("Riverstone Equityco") and the sole manager of Riverstone Talos Energy Debtco LLC ("Riverstone Debtco"). In addition of Riverstone Energy Partners V and Riverstone Energy Fund V own an indirect interest in Castex 2014, and Riverstone Energy Partners V owns an indirect interest in ILX Holdings II.

F5 · ownership.nature: Each of Messrs. Leuschen and Lapeyre, Riverstone Management, Riverstone/Gower and Holdings may be deemed to share beneficial ownership of the securities held of record by ILX Holdings and ILX Holdings III, and each of the foregoing entities and persons, together with Riverstone Corp, Riverstone GP, Riverstone Energy Partners V and Riverstone Energy Fund V may be deemed to share beneficial ownership of the securities held of record by Castex 2014 and ILX Holdings II, and such entities and persons, together with Riverstone Aggregator, may be deemed to share beneficial ownership of the securities held of record by Riverstone Equityco and Riverstone Debtco. Each such entity or person disclaims any such beneficial ownership of such securities 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: 0001104659-20-041822 · a4.xml · derivative · entry 9

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 · By ILX Holdings III, LLC

Disclosed balance after: 0

Underlying: Common Stock · 130,000 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: On February 28, 2020, as partial consideration for the Issuer's acquisition of certain limited liability company interests, the Issuer issued an aggregate 110,000 shares of Series A Convertible Preferred Stock to ILX Holdings, LLC ("ILX Holdings"), ILX Holdings II, LLC ("ILX Holdings II"), ILX Holdings III, LLC ("ILX Holdings III") and Castex Energy 2014, LLC ("Castex 2014"). Each share of Series A Convertible Preferred Stock converted into 100 shares of the Issuer's common stock on March 30, 2020, which is 20 calendar days following the stated date of distribution to the Issuer's stockholders of a definitive Information Statement on Schedule 14C relating to the conversion of such Series A Convertible Preferred Stock.

F1 · price: On February 28, 2020, as partial consideration for the Issuer's acquisition of certain limited liability company interests, the Issuer issued an aggregate 110,000 shares of Series A Convertible Preferred Stock to ILX Holdings, LLC ("ILX Holdings"), ILX Holdings II, LLC ("ILX Holdings II"), ILX Holdings III, LLC ("ILX Holdings III") and Castex Energy 2014, LLC ("Castex 2014"). Each share of Series A Convertible Preferred Stock converted into 100 shares of the Issuer's common stock on March 30, 2020, which is 20 calendar days following the stated date of distribution to the Issuer's stockholders of a definitive Information Statement on Schedule 14C relating to the conversion of such Series A Convertible Preferred Stock.

F1 · derivative.exercise_date: On February 28, 2020, as partial consideration for the Issuer's acquisition of certain limited liability company interests, the Issuer issued an aggregate 110,000 shares of Series A Convertible Preferred Stock to ILX Holdings, LLC ("ILX Holdings"), ILX Holdings II, LLC ("ILX Holdings II"), ILX Holdings III, LLC ("ILX Holdings III") and Castex Energy 2014, LLC ("Castex 2014"). Each share of Series A Convertible Preferred Stock converted into 100 shares of the Issuer's common stock on March 30, 2020, which is 20 calendar days following the stated date of distribution to the Issuer's stockholders of a definitive Information Statement on Schedule 14C relating to the conversion of such Series A Convertible Preferred Stock.

F1 · derivative.expiration_date: On February 28, 2020, as partial consideration for the Issuer's acquisition of certain limited liability company interests, the Issuer issued an aggregate 110,000 shares of Series A Convertible Preferred Stock to ILX Holdings, LLC ("ILX Holdings"), ILX Holdings II, LLC ("ILX Holdings II"), ILX Holdings III, LLC ("ILX Holdings III") and Castex Energy 2014, LLC ("Castex 2014"). Each share of Series A Convertible Preferred Stock converted into 100 shares of the Issuer's common stock on March 30, 2020, which is 20 calendar days following the stated date of distribution to the Issuer's stockholders of a definitive Information Statement on Schedule 14C relating to the conversion of such Series A Convertible Preferred Stock.

F2 · ownership.nature: David Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C. ("Riverstone Management"), which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Holdings").

F4 · ownership.nature: Holdings is the owner of the ultimate general partners of each of ILX Holdings and ILX Holdings III.

F5 · ownership.nature: Each of Messrs. Leuschen and Lapeyre, Riverstone Management, Riverstone/Gower and Holdings may be deemed to share beneficial ownership of the securities held of record by ILX Holdings and ILX Holdings III, and each of the foregoing entities and persons, together with Riverstone Corp, Riverstone GP, Riverstone Energy Partners V and Riverstone Energy Fund V may be deemed to share beneficial ownership of the securities held of record by Castex 2014 and ILX Holdings II, and such entities and persons, together with Riverstone Aggregator, may be deemed to share beneficial ownership of the securities held of record by Riverstone Equityco and Riverstone Debtco. Each such entity or person disclaims any such beneficial ownership of such securities 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: 0001104659-20-041822 · a4.xml · derivative · entry 8

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 · By ILX Holdings II, LLC

Disclosed balance after: 0

Underlying: Common Stock · 4,510,000 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: On February 28, 2020, as partial consideration for the Issuer's acquisition of certain limited liability company interests, the Issuer issued an aggregate 110,000 shares of Series A Convertible Preferred Stock to ILX Holdings, LLC ("ILX Holdings"), ILX Holdings II, LLC ("ILX Holdings II"), ILX Holdings III, LLC ("ILX Holdings III") and Castex Energy 2014, LLC ("Castex 2014"). Each share of Series A Convertible Preferred Stock converted into 100 shares of the Issuer's common stock on March 30, 2020, which is 20 calendar days following the stated date of distribution to the Issuer's stockholders of a definitive Information Statement on Schedule 14C relating to the conversion of such Series A Convertible Preferred Stock.

F1 · price: On February 28, 2020, as partial consideration for the Issuer's acquisition of certain limited liability company interests, the Issuer issued an aggregate 110,000 shares of Series A Convertible Preferred Stock to ILX Holdings, LLC ("ILX Holdings"), ILX Holdings II, LLC ("ILX Holdings II"), ILX Holdings III, LLC ("ILX Holdings III") and Castex Energy 2014, LLC ("Castex 2014"). Each share of Series A Convertible Preferred Stock converted into 100 shares of the Issuer's common stock on March 30, 2020, which is 20 calendar days following the stated date of distribution to the Issuer's stockholders of a definitive Information Statement on Schedule 14C relating to the conversion of such Series A Convertible Preferred Stock.

F1 · derivative.exercise_date: On February 28, 2020, as partial consideration for the Issuer's acquisition of certain limited liability company interests, the Issuer issued an aggregate 110,000 shares of Series A Convertible Preferred Stock to ILX Holdings, LLC ("ILX Holdings"), ILX Holdings II, LLC ("ILX Holdings II"), ILX Holdings III, LLC ("ILX Holdings III") and Castex Energy 2014, LLC ("Castex 2014"). Each share of Series A Convertible Preferred Stock converted into 100 shares of the Issuer's common stock on March 30, 2020, which is 20 calendar days following the stated date of distribution to the Issuer's stockholders of a definitive Information Statement on Schedule 14C relating to the conversion of such Series A Convertible Preferred Stock.

F1 · derivative.expiration_date: On February 28, 2020, as partial consideration for the Issuer's acquisition of certain limited liability company interests, the Issuer issued an aggregate 110,000 shares of Series A Convertible Preferred Stock to ILX Holdings, LLC ("ILX Holdings"), ILX Holdings II, LLC ("ILX Holdings II"), ILX Holdings III, LLC ("ILX Holdings III") and Castex Energy 2014, LLC ("Castex 2014"). Each share of Series A Convertible Preferred Stock converted into 100 shares of the Issuer's common stock on March 30, 2020, which is 20 calendar days following the stated date of distribution to the Issuer's stockholders of a definitive Information Statement on Schedule 14C relating to the conversion of such Series A Convertible Preferred Stock.

F2 · ownership.nature: David Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C. ("Riverstone Management"), which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Holdings").

F3 · ownership.nature: Holdings is the sole shareholder of Riverstone Energy GP V Corp ("Riverstone Corp"), which is the managing member of Riverstone Energy GP V, LLC ("Riverstone GP"), 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. ("Riverstone Energy Fund V"), which is the general partner of Riverstone V Talos Holdings, L.P. ("Riverstone Aggregator"), which is the managing member of Riverstone Talos Energy Equityco LLC ("Riverstone Equityco") and the sole manager of Riverstone Talos Energy Debtco LLC ("Riverstone Debtco"). In addition of Riverstone Energy Partners V and Riverstone Energy Fund V own an indirect interest in Castex 2014, and Riverstone Energy Partners V owns an indirect interest in ILX Holdings II.

F5 · ownership.nature: Each of Messrs. Leuschen and Lapeyre, Riverstone Management, Riverstone/Gower and Holdings may be deemed to share beneficial ownership of the securities held of record by ILX Holdings and ILX Holdings III, and each of the foregoing entities and persons, together with Riverstone Corp, Riverstone GP, Riverstone Energy Partners V and Riverstone Energy Fund V may be deemed to share beneficial ownership of the securities held of record by Castex 2014 and ILX Holdings II, and such entities and persons, together with Riverstone Aggregator, may be deemed to share beneficial ownership of the securities held of record by Riverstone Equityco and Riverstone Debtco. Each such entity or person disclaims any such beneficial ownership of such securities 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: 0001104659-20-041822 · a4.xml · derivative · entry 7

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 · By ILX Holdings, LLC

Disclosed balance after: 0

Underlying: Common Stock · 4,960,000 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: On February 28, 2020, as partial consideration for the Issuer's acquisition of certain limited liability company interests, the Issuer issued an aggregate 110,000 shares of Series A Convertible Preferred Stock to ILX Holdings, LLC ("ILX Holdings"), ILX Holdings II, LLC ("ILX Holdings II"), ILX Holdings III, LLC ("ILX Holdings III") and Castex Energy 2014, LLC ("Castex 2014"). Each share of Series A Convertible Preferred Stock converted into 100 shares of the Issuer's common stock on March 30, 2020, which is 20 calendar days following the stated date of distribution to the Issuer's stockholders of a definitive Information Statement on Schedule 14C relating to the conversion of such Series A Convertible Preferred Stock.

F1 · price: On February 28, 2020, as partial consideration for the Issuer's acquisition of certain limited liability company interests, the Issuer issued an aggregate 110,000 shares of Series A Convertible Preferred Stock to ILX Holdings, LLC ("ILX Holdings"), ILX Holdings II, LLC ("ILX Holdings II"), ILX Holdings III, LLC ("ILX Holdings III") and Castex Energy 2014, LLC ("Castex 2014"). Each share of Series A Convertible Preferred Stock converted into 100 shares of the Issuer's common stock on March 30, 2020, which is 20 calendar days following the stated date of distribution to the Issuer's stockholders of a definitive Information Statement on Schedule 14C relating to the conversion of such Series A Convertible Preferred Stock.

F1 · derivative.exercise_date: On February 28, 2020, as partial consideration for the Issuer's acquisition of certain limited liability company interests, the Issuer issued an aggregate 110,000 shares of Series A Convertible Preferred Stock to ILX Holdings, LLC ("ILX Holdings"), ILX Holdings II, LLC ("ILX Holdings II"), ILX Holdings III, LLC ("ILX Holdings III") and Castex Energy 2014, LLC ("Castex 2014"). Each share of Series A Convertible Preferred Stock converted into 100 shares of the Issuer's common stock on March 30, 2020, which is 20 calendar days following the stated date of distribution to the Issuer's stockholders of a definitive Information Statement on Schedule 14C relating to the conversion of such Series A Convertible Preferred Stock.

F1 · derivative.expiration_date: On February 28, 2020, as partial consideration for the Issuer's acquisition of certain limited liability company interests, the Issuer issued an aggregate 110,000 shares of Series A Convertible Preferred Stock to ILX Holdings, LLC ("ILX Holdings"), ILX Holdings II, LLC ("ILX Holdings II"), ILX Holdings III, LLC ("ILX Holdings III") and Castex Energy 2014, LLC ("Castex 2014"). Each share of Series A Convertible Preferred Stock converted into 100 shares of the Issuer's common stock on March 30, 2020, which is 20 calendar days following the stated date of distribution to the Issuer's stockholders of a definitive Information Statement on Schedule 14C relating to the conversion of such Series A Convertible Preferred Stock.

F2 · ownership.nature: David Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C. ("Riverstone Management"), which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Holdings").

F4 · ownership.nature: Holdings is the owner of the ultimate general partners of each of ILX Holdings and ILX Holdings III.

F5 · ownership.nature: Each of Messrs. Leuschen and Lapeyre, Riverstone Management, Riverstone/Gower and Holdings may be deemed to share beneficial ownership of the securities held of record by ILX Holdings and ILX Holdings III, and each of the foregoing entities and persons, together with Riverstone Corp, Riverstone GP, Riverstone Energy Partners V and Riverstone Energy Fund V may be deemed to share beneficial ownership of the securities held of record by Castex 2014 and ILX Holdings II, and such entities and persons, together with Riverstone Aggregator, may be deemed to share beneficial ownership of the securities held of record by Riverstone Equityco and Riverstone Debtco. Each such entity or person disclaims any such beneficial ownership of such securities 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: 0001104659-20-041822 · a4.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

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Castex Energy 2014, LLC

Disclosed balance after: 1,400,000

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: On February 28, 2020, as partial consideration for the Issuer's acquisition of certain limited liability company interests, the Issuer issued an aggregate 110,000 shares of Series A Convertible Preferred Stock to ILX Holdings, LLC ("ILX Holdings"), ILX Holdings II, LLC ("ILX Holdings II"), ILX Holdings III, LLC ("ILX Holdings III") and Castex Energy 2014, LLC ("Castex 2014"). Each share of Series A Convertible Preferred Stock converted into 100 shares of the Issuer's common stock on March 30, 2020, which is 20 calendar days following the stated date of distribution to the Issuer's stockholders of a definitive Information Statement on Schedule 14C relating to the conversion of such Series A Convertible Preferred Stock.

F2 · ownership.nature: David Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C. ("Riverstone Management"), which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Holdings").

F3 · ownership.nature: Holdings is the sole shareholder of Riverstone Energy GP V Corp ("Riverstone Corp"), which is the managing member of Riverstone Energy GP V, LLC ("Riverstone GP"), 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. ("Riverstone Energy Fund V"), which is the general partner of Riverstone V Talos Holdings, L.P. ("Riverstone Aggregator"), which is the managing member of Riverstone Talos Energy Equityco LLC ("Riverstone Equityco") and the sole manager of Riverstone Talos Energy Debtco LLC ("Riverstone Debtco"). In addition of Riverstone Energy Partners V and Riverstone Energy Fund V own an indirect interest in Castex 2014, and Riverstone Energy Partners V owns an indirect interest in ILX Holdings II.

F5 · ownership.nature: Each of Messrs. Leuschen and Lapeyre, Riverstone Management, Riverstone/Gower and Holdings may be deemed to share beneficial ownership of the securities held of record by ILX Holdings and ILX Holdings III, and each of the foregoing entities and persons, together with Riverstone Corp, Riverstone GP, Riverstone Energy Partners V and Riverstone Energy Fund V may be deemed to share beneficial ownership of the securities held of record by Castex 2014 and ILX Holdings II, and such entities and persons, together with Riverstone Aggregator, may be deemed to share beneficial ownership of the securities held of record by Riverstone Equityco and Riverstone Debtco. Each such entity or person disclaims any such beneficial ownership of such securities 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: 0001104659-20-041822 · a4.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

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By ILX Holdings III, LLC

Disclosed balance after: 130,000

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: On February 28, 2020, as partial consideration for the Issuer's acquisition of certain limited liability company interests, the Issuer issued an aggregate 110,000 shares of Series A Convertible Preferred Stock to ILX Holdings, LLC ("ILX Holdings"), ILX Holdings II, LLC ("ILX Holdings II"), ILX Holdings III, LLC ("ILX Holdings III") and Castex Energy 2014, LLC ("Castex 2014"). Each share of Series A Convertible Preferred Stock converted into 100 shares of the Issuer's common stock on March 30, 2020, which is 20 calendar days following the stated date of distribution to the Issuer's stockholders of a definitive Information Statement on Schedule 14C relating to the conversion of such Series A Convertible Preferred Stock.

F2 · ownership.nature: David Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C. ("Riverstone Management"), which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Holdings").

F4 · ownership.nature: Holdings is the owner of the ultimate general partners of each of ILX Holdings and ILX Holdings III.

F5 · ownership.nature: Each of Messrs. Leuschen and Lapeyre, Riverstone Management, Riverstone/Gower and Holdings may be deemed to share beneficial ownership of the securities held of record by ILX Holdings and ILX Holdings III, and each of the foregoing entities and persons, together with Riverstone Corp, Riverstone GP, Riverstone Energy Partners V and Riverstone Energy Fund V may be deemed to share beneficial ownership of the securities held of record by Castex 2014 and ILX Holdings II, and such entities and persons, together with Riverstone Aggregator, may be deemed to share beneficial ownership of the securities held of record by Riverstone Equityco and Riverstone Debtco. Each such entity or person disclaims any such beneficial ownership of such securities 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: 0001104659-20-041822 · a4.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

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By ILX Holdings II, LLC

Disclosed balance after: 4,510,000

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: On February 28, 2020, as partial consideration for the Issuer's acquisition of certain limited liability company interests, the Issuer issued an aggregate 110,000 shares of Series A Convertible Preferred Stock to ILX Holdings, LLC ("ILX Holdings"), ILX Holdings II, LLC ("ILX Holdings II"), ILX Holdings III, LLC ("ILX Holdings III") and Castex Energy 2014, LLC ("Castex 2014"). Each share of Series A Convertible Preferred Stock converted into 100 shares of the Issuer's common stock on March 30, 2020, which is 20 calendar days following the stated date of distribution to the Issuer's stockholders of a definitive Information Statement on Schedule 14C relating to the conversion of such Series A Convertible Preferred Stock.

F2 · ownership.nature: David Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C. ("Riverstone Management"), which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Holdings").

F3 · ownership.nature: Holdings is the sole shareholder of Riverstone Energy GP V Corp ("Riverstone Corp"), which is the managing member of Riverstone Energy GP V, LLC ("Riverstone GP"), 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. ("Riverstone Energy Fund V"), which is the general partner of Riverstone V Talos Holdings, L.P. ("Riverstone Aggregator"), which is the managing member of Riverstone Talos Energy Equityco LLC ("Riverstone Equityco") and the sole manager of Riverstone Talos Energy Debtco LLC ("Riverstone Debtco"). In addition of Riverstone Energy Partners V and Riverstone Energy Fund V own an indirect interest in Castex 2014, and Riverstone Energy Partners V owns an indirect interest in ILX Holdings II.

F5 · ownership.nature: Each of Messrs. Leuschen and Lapeyre, Riverstone Management, Riverstone/Gower and Holdings may be deemed to share beneficial ownership of the securities held of record by ILX Holdings and ILX Holdings III, and each of the foregoing entities and persons, together with Riverstone Corp, Riverstone GP, Riverstone Energy Partners V and Riverstone Energy Fund V may be deemed to share beneficial ownership of the securities held of record by Castex 2014 and ILX Holdings II, and such entities and persons, together with Riverstone Aggregator, may be deemed to share beneficial ownership of the securities held of record by Riverstone Equityco and Riverstone Debtco. Each such entity or person disclaims any such beneficial ownership of such securities 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: 0001104659-20-041822 · a4.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 · By ILX Holdings, LLC

Disclosed balance after: 4,960,000

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: On February 28, 2020, as partial consideration for the Issuer's acquisition of certain limited liability company interests, the Issuer issued an aggregate 110,000 shares of Series A Convertible Preferred Stock to ILX Holdings, LLC ("ILX Holdings"), ILX Holdings II, LLC ("ILX Holdings II"), ILX Holdings III, LLC ("ILX Holdings III") and Castex Energy 2014, LLC ("Castex 2014"). Each share of Series A Convertible Preferred Stock converted into 100 shares of the Issuer's common stock on March 30, 2020, which is 20 calendar days following the stated date of distribution to the Issuer's stockholders of a definitive Information Statement on Schedule 14C relating to the conversion of such Series A Convertible Preferred Stock.

F2 · ownership.nature: David Leuschen and Pierre F. Lapeyre, Jr. are the managing directors of Riverstone Management Group, L.L.C. ("Riverstone Management"), which is the general partner of Riverstone/Gower Mgmt Co Holdings, L.P. ("Riverstone/Gower"), which is the sole member of Riverstone Holdings LLC ("Holdings").

F4 · ownership.nature: Holdings is the owner of the ultimate general partners of each of ILX Holdings and ILX Holdings III.

F5 · ownership.nature: Each of Messrs. Leuschen and Lapeyre, Riverstone Management, Riverstone/Gower and Holdings may be deemed to share beneficial ownership of the securities held of record by ILX Holdings and ILX Holdings III, and each of the foregoing entities and persons, together with Riverstone Corp, Riverstone GP, Riverstone Energy Partners V and Riverstone Energy Fund V may be deemed to share beneficial ownership of the securities held of record by Castex 2014 and ILX Holdings II, and such entities and persons, together with Riverstone Aggregator, may be deemed to share beneficial ownership of the securities held of record by Riverstone Equityco and Riverstone Debtco. Each such entity or person disclaims any such beneficial ownership of such securities 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: 0000899243-20-007631 · doc4.xml · nonDerivative · entry 1

Abendschein Robert D. · CIK 0001739409 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 45,628

F1 · price: Shares of common stock reported are restricted stock units that each represent a contingent right to receive one of common stock, par value $0.01 per share, of Talos Energy Inc., a Delaware corporation. The restricted stock units will vest ratably on each of March 5, 2021, March 5, 2022 and March 5, 2023. The restricted stock units are compensatory awards and were received for no cash consideration.

SEC source: 0000899243-20-007640 · doc4.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 231,756

SEC source: 0000899243-20-007640 · doc4.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 237,803

F1 · price: Shares of common stock reported are restricted stock units that each represent a contingent right to receive one of common stock, par value $0.01 per share, of Talos Energy Inc., a Delaware corporation. The restricted stock units will vest ratably on each of March 5, 2021, March 5, 2022 and March 5, 2023. The restricted stock units are compensatory awards and were received for no cash consideration.

SEC source: 0000899243-20-007642 · doc4.xml · derivative · entry 4

JUNEAU JOHN B · CIK 0001182585 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,168

Underlying: Common Stock · 12,168 shares

Expires not disclosed

F2 · derivative.exercise_price: The RSUs represent a contingent right to receive 60% of such RSUs in shares of Common Stock and 40% of such RSUs in cash.

F3 · derivative.exercise_date: The RSUs vest on March 5, 2021. Vested shares and cash will be delivered to the reporting person following the vesting date.

F3 · derivative.expiration_date: The RSUs vest on March 5, 2021. Vested shares and cash will be delivered to the reporting person following the vesting date.

SEC source: 0000899243-20-007642 · 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 · 6,873 shares

Expires 2020-03-05

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") represent the economic equivalent of one share of common stock, par value $0.01 per share, of Talos Energy Inc., a Delaware corporation ("Common Stock"). 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 · price: The restricted stock units ("RSUs") represent the economic equivalent of one share of common stock, par value $0.01 per share, of Talos Energy Inc., a Delaware corporation ("Common Stock"). 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: 0000899243-20-007642 · doc4.xml · nonDerivative · entry 2

JUNEAU JOHN B · CIK 0001182585 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 38,109

SEC source: 0000899243-20-007642 · doc4.xml · nonDerivative · entry 1

JUNEAU JOHN B · CIK 0001182585 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 40,858

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") represent the economic equivalent of one share of common stock, par value $0.01 per share, of Talos Energy Inc., a Delaware corporation ("Common Stock"). 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: 0000899243-20-007629 · doc4.xml · derivative · entry 1

SLEDGE CHARLES M · CIK 0001270321 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,168

Underlying: Common Stock · 12,168 shares

Expires not disclosed

F1 · derivative.exercise_price: The restricted stock units ("RSUs") represent the economic equivalent of one share of common stock, par value $0.01 per share, of Talos Energy Inc., a Delaware corporation ("Common Stock"). Pursuant to the terms of the award agreement, 60% of the RSUs will be settled in Common Stock and 40% of the RSUs will be settled in cash.

F2 · derivative.exercise_date: The RSUs vest on March 5, 2021. Vested shares and cash will be delivered to the reporting person following the vesting date.

F2 · derivative.expiration_date: The RSUs vest on March 5, 2021. Vested shares and cash will be delivered to the reporting person following the vesting date.

SEC source: 0000899243-20-007641 · doc4.xml · derivative · entry 1

GOLDMAN NEAL P · CIK 0001212774 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,491

Underlying: Common Stock · 17,491 shares

Expires not disclosed

F1 · derivative.exercise_price: The restricted stock units ("RSUs") represent the economic equivalent of one share of common stock, par value $0.01 per share, of Talos Energy Inc., a Delaware corporation ("Common Stock"). Pursuant to the terms of the award agreement, 60% of the RSUs will be settled in Common Stock and 40% of the RSUs will be settled in cash.

F2 · derivative.exercise_date: The RSUs vest on March 5, 2021. Vested shares and cash will be delivered to the reporting person on the earliest to the occur of (i) the reporting person's separation from service, (ii) the reporting person's disability, or (iii) a change in control.

F2 · derivative.expiration_date: The RSUs vest on March 5, 2021. Vested shares and cash will be delivered to the reporting person on the earliest to the occur of (i) the reporting person's separation from service, (ii) the reporting person's disability, or (iii) a change in control.

SEC source: 0000899243-20-007627 · doc4.xml · derivative · entry 4

TRIMBLE JAMES M · CIK 0001195182 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,168

Underlying: Common Stock · 12,168 shares

Expires not disclosed

F2 · derivative.exercise_price: The RSUs represent a contingent right to receive 60% of such RSUs in shares of Common Stock and 40% of such RSUs in cash.

F3 · derivative.exercise_date: The RSUs vest on March 5, 2021. Vested shares and cash will be delivered to the reporting person following the vesting date.

F3 · derivative.expiration_date: The RSUs vest on March 5, 2021. Vested shares and cash will be delivered to the reporting person following the vesting date.

SEC source: 0000899243-20-007627 · doc4.xml · derivative · entry 3

TRIMBLE JAMES M · CIK 0001195182 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 6,873 shares

Expires 2020-03-05

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") represent the economic equivalent of one share of common stock, par value $0.01 per share, of Talos Energy Inc., a Delaware corporation ("Common Stock"). 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 · price: The restricted stock units ("RSUs") represent the economic equivalent of one share of common stock, par value $0.01 per share, of Talos Energy Inc., a Delaware corporation ("Common Stock"). 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: 0000899243-20-007627 · doc4.xml · nonDerivative · entry 2

TRIMBLE JAMES M · CIK 0001195182 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,810

SEC source: 0000899243-20-007627 · doc4.xml · nonDerivative · entry 1

TRIMBLE JAMES M · CIK 0001195182 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,559

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") represent the economic equivalent of one share of common stock, par value $0.01 per share, of Talos Energy Inc., a Delaware corporation ("Common Stock"). 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: 0000899243-20-007634 · doc4.xml · derivative · entry 4

Kendall Donald R Jr · CIK 0001560289 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,168

Underlying: Common Stock · 12,168 shares

Expires not disclosed

F2 · derivative.exercise_price: The RSUs represent a contingent right to receive 60% of such RSUs in shares of Common Stock and 40% of such RSUs in cash.

F3 · derivative.exercise_date: The RSUs vest on March 5, 2021. Vested shares and cash will be delivered to the reporting person following the vesting date.

F3 · derivative.expiration_date: The RSUs vest on March 5, 2021. Vested shares and cash will be delivered to the reporting person following the vesting date.

SEC source: 0000899243-20-007634 · 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 · 6,873 shares

Expires 2020-03-05

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") represent the economic equivalent of one share of common stock, par value $0.01 per share, of Talos Energy Inc., a Delaware corporation ("Common Stock"). 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 · price: The restricted stock units ("RSUs") represent the economic equivalent of one share of common stock, par value $0.01 per share, of Talos Energy Inc., a Delaware corporation ("Common Stock"). 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.