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BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP

Disclosed activity across 1 company

Tapewire entity
16007
SEC CIK
0001273623

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Reported relationships

Latest disclosed role at each company.

No relationships currently tracked through insider filings.

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

No balances currently tracked through insider filings.

Past disclosures · reporting ended (1)

No longer tracked through insider filings. These historical balances do not imply present ownership or a zero position.

Section 16 reporting ended · disclosed 2019-03-01. Current position is not established by this disclosure.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common SharesSEC Table I · non-derivativeIndirectSee Footnotes25,563,334 Reported balance After 2019-02-27 transaction · row 1 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 1 · 2019-02-27 · Sale · Disposed 21,101,965 · Balance 25,563,334

F1: These common shares, par value $0.01 per share (the "Common Shares"), of Kosmos Energy Ltd. (the "Issuer") are held by Blackstone Capital Partners (Cayman) IV L.P. ("BCP Cayman IV").

F6: The general partner of BFIP SMD is Blackstone Family GP L.L.C., which is wholly owned by Blackstone's senior managing directors and controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is wholly owned by Blackstone's senior managing directors and controlled by its founder, Stephen A. Schwarzman.

F7: Due to the limitations of the electronic filing system certain Reporting Persons are filing a separate Form 4.

F8: Information with respect to each of the Reporting Persons is given solely by such Reporting Person, and no Reporting Person has responsibility for the accuracy or completeness of information supplied by another Reporting Person.

F9: Each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein), disclaims beneficial ownership of the securities held by the Blackstone Funds, except to the extent of such Reporting Person's pecuniary interest therein, and, pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein) states that the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all of the reported securities for purposes of Section 16 or for any other purpose.

Common SharesSEC Table I · non-derivativeIndirectSee Footnotes416,888 Reported balance After 2019-02-27 transaction · row 2 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 2 · 2019-02-27 · Sale · Disposed 344,132 · Balance 416,888

F2: These Common Shares are held by Blackstone Capital Partners (Cayman) IV-A L.P. ("BCP Cayman IV-A").

F6: The general partner of BFIP SMD is Blackstone Family GP L.L.C., which is wholly owned by Blackstone's senior managing directors and controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is wholly owned by Blackstone's senior managing directors and controlled by its founder, Stephen A. Schwarzman.

F7: Due to the limitations of the electronic filing system certain Reporting Persons are filing a separate Form 4.

F8: Information with respect to each of the Reporting Persons is given solely by such Reporting Person, and no Reporting Person has responsibility for the accuracy or completeness of information supplied by another Reporting Person.

F9: Each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein), disclaims beneficial ownership of the securities held by the Blackstone Funds, except to the extent of such Reporting Person's pecuniary interest therein, and, pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein) states that the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all of the reported securities for purposes of Section 16 or for any other purpose.

Common SharesSEC Table I · non-derivativeIndirectSee Footnotes657,075 Reported balance After 2019-02-27 transaction · row 3 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 3 · 2019-02-27 · Sale · Disposed 542,401 · Balance 657,075

F3: These Common Shares are held by Blackstone Family Investment Partnership (Cayman) IV-A L.P. ("BFIP").

F6: The general partner of BFIP SMD is Blackstone Family GP L.L.C., which is wholly owned by Blackstone's senior managing directors and controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is wholly owned by Blackstone's senior managing directors and controlled by its founder, Stephen A. Schwarzman.

F7: Due to the limitations of the electronic filing system certain Reporting Persons are filing a separate Form 4.

F8: Information with respect to each of the Reporting Persons is given solely by such Reporting Person, and no Reporting Person has responsibility for the accuracy or completeness of information supplied by another Reporting Person.

F9: Each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein), disclaims beneficial ownership of the securities held by the Blackstone Funds, except to the extent of such Reporting Person's pecuniary interest therein, and, pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein) states that the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all of the reported securities for purposes of Section 16 or for any other purpose.

Common SharesSEC Table I · non-derivativeIndirectSee Footnotes545,566 Reported balance After 2019-02-27 transaction · row 4 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 4 · 2019-02-27 · Sale · Disposed 450,353 · Balance 545,566

F4: These Common Shares are held by Blackstone Family Investment Partnership (Cayman) IV-A SMD L.P. ("BFIP SMD").

F6: The general partner of BFIP SMD is Blackstone Family GP L.L.C., which is wholly owned by Blackstone's senior managing directors and controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is wholly owned by Blackstone's senior managing directors and controlled by its founder, Stephen A. Schwarzman.

F7: Due to the limitations of the electronic filing system certain Reporting Persons are filing a separate Form 4.

F8: Information with respect to each of the Reporting Persons is given solely by such Reporting Person, and no Reporting Person has responsibility for the accuracy or completeness of information supplied by another Reporting Person.

F9: Each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein), disclaims beneficial ownership of the securities held by the Blackstone Funds, except to the extent of such Reporting Person's pecuniary interest therein, and, pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein) states that the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all of the reported securities for purposes of Section 16 or for any other purpose.

Common SharesSEC Table I · non-derivativeIndirectSee Footnotes74,078 Reported balance After 2019-02-27 transaction · row 5 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 5 · 2019-02-27 · Sale · Disposed 61,149 · Balance 74,078

F5: These Common Shares are held by Blackstone Participation Partnership (Cayman) IV L.P. ("BPP", together with BCP Cayman IV, BCP Cayman IV-A, BFIP and BFIP SMD, the "Blackstone Funds").

F6: The general partner of BFIP SMD is Blackstone Family GP L.L.C., which is wholly owned by Blackstone's senior managing directors and controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is wholly owned by Blackstone's senior managing directors and controlled by its founder, Stephen A. Schwarzman.

F7: Due to the limitations of the electronic filing system certain Reporting Persons are filing a separate Form 4.

F8: Information with respect to each of the Reporting Persons is given solely by such Reporting Person, and no Reporting Person has responsibility for the accuracy or completeness of information supplied by another Reporting Person.

F9: Each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein), disclaims beneficial ownership of the securities held by the Blackstone Funds, except to the extent of such Reporting Person's pecuniary interest therein, and, pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein) states that the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all of the reported securities for purposes of Section 16 or for any other purpose.

Filing footnotes · ownership attribution and instrument terms

F1: These common shares, par value $0.01 per share (the "Common Shares"), of Kosmos Energy Ltd. (the "Issuer") are held by Blackstone Capital Partners (Cayman) IV L.P. ("BCP Cayman IV").

F2: These Common Shares are held by Blackstone Capital Partners (Cayman) IV-A L.P. ("BCP Cayman IV-A").

F3: These Common Shares are held by Blackstone Family Investment Partnership (Cayman) IV-A L.P. ("BFIP").

F4: These Common Shares are held by Blackstone Family Investment Partnership (Cayman) IV-A SMD L.P. ("BFIP SMD").

F5: These Common Shares are held by Blackstone Participation Partnership (Cayman) IV L.P. ("BPP", together with BCP Cayman IV, BCP Cayman IV-A, BFIP and BFIP SMD, the "Blackstone Funds").

F6: The general partner of BFIP SMD is Blackstone Family GP L.L.C., which is wholly owned by Blackstone's senior managing directors and controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is wholly owned by Blackstone's senior managing directors and controlled by its founder, Stephen A. Schwarzman.

F7: Due to the limitations of the electronic filing system certain Reporting Persons are filing a separate Form 4.

F8: Information with respect to each of the Reporting Persons is given solely by such Reporting Person, and no Reporting Person has responsibility for the accuracy or completeness of information supplied by another Reporting Person.

F9: Each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein), disclaims beneficial ownership of the securities held by the Blackstone Funds, except to the extent of such Reporting Person's pecuniary interest therein, and, pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein) states that the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all of the reported securities for purposes of Section 16 or for any other purpose.

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

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Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
February 27, 2019 Filed Mar 1, 2019 22:01 UTC Kosmos Energy Ltd. KOS · Entity 4605 SaleCommon Shares 61,149 $6.51 $398,079.99
Disclosure

SEC source: 0000899243-19-005475 · doc4.xml · nonDerivative · entry 5

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 74,078

F5 · ownership.nature: These Common Shares are held by Blackstone Participation Partnership (Cayman) IV L.P. ("BPP", together with BCP Cayman IV, BCP Cayman IV-A, BFIP and BFIP SMD, the "Blackstone Funds").

F6 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C., which is wholly owned by Blackstone's senior managing directors and controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is wholly owned by Blackstone's senior managing directors and controlled by its founder, Stephen A. Schwarzman.

F7 · ownership.nature: Due to the limitations of the electronic filing system certain Reporting Persons are filing a separate Form 4.

F8 · ownership.nature: Information with respect to each of the Reporting Persons is given solely by such Reporting Person, and no Reporting Person has responsibility for the accuracy or completeness of information supplied by another Reporting Person.

F9 · ownership.nature: Each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein), disclaims beneficial ownership of the securities held by the Blackstone Funds, except to the extent of such Reporting Person's pecuniary interest therein, and, pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein) states that the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all of the reported securities for purposes of Section 16 or for any other purpose.

Read SEC document
February 27, 2019 Filed Mar 1, 2019 22:01 UTC Kosmos Energy Ltd. KOS · Entity 4605 SaleCommon Shares 450,353 $6.51 $2,931,798.03
Disclosure

SEC source: 0000899243-19-005475 · doc4.xml · nonDerivative · entry 4

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 545,566

F4 · ownership.nature: These Common Shares are held by Blackstone Family Investment Partnership (Cayman) IV-A SMD L.P. ("BFIP SMD").

F6 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C., which is wholly owned by Blackstone's senior managing directors and controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is wholly owned by Blackstone's senior managing directors and controlled by its founder, Stephen A. Schwarzman.

F7 · ownership.nature: Due to the limitations of the electronic filing system certain Reporting Persons are filing a separate Form 4.

F8 · ownership.nature: Information with respect to each of the Reporting Persons is given solely by such Reporting Person, and no Reporting Person has responsibility for the accuracy or completeness of information supplied by another Reporting Person.

F9 · ownership.nature: Each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein), disclaims beneficial ownership of the securities held by the Blackstone Funds, except to the extent of such Reporting Person's pecuniary interest therein, and, pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein) states that the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all of the reported securities for purposes of Section 16 or for any other purpose.

Read SEC document
February 27, 2019 Filed Mar 1, 2019 22:01 UTC Kosmos Energy Ltd. KOS · Entity 4605 SaleCommon Shares 542,401 $6.51 $3,531,030.51
Disclosure

SEC source: 0000899243-19-005475 · doc4.xml · nonDerivative · entry 3

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 657,075

F3 · ownership.nature: These Common Shares are held by Blackstone Family Investment Partnership (Cayman) IV-A L.P. ("BFIP").

F6 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C., which is wholly owned by Blackstone's senior managing directors and controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is wholly owned by Blackstone's senior managing directors and controlled by its founder, Stephen A. Schwarzman.

F7 · ownership.nature: Due to the limitations of the electronic filing system certain Reporting Persons are filing a separate Form 4.

F8 · ownership.nature: Information with respect to each of the Reporting Persons is given solely by such Reporting Person, and no Reporting Person has responsibility for the accuracy or completeness of information supplied by another Reporting Person.

F9 · ownership.nature: Each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein), disclaims beneficial ownership of the securities held by the Blackstone Funds, except to the extent of such Reporting Person's pecuniary interest therein, and, pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein) states that the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all of the reported securities for purposes of Section 16 or for any other purpose.

Read SEC document
February 27, 2019 Filed Mar 1, 2019 22:01 UTC Kosmos Energy Ltd. KOS · Entity 4605 SaleCommon Shares 344,132 $6.51 $2,240,299.32
Disclosure

SEC source: 0000899243-19-005475 · doc4.xml · nonDerivative · entry 2

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 416,888

F2 · ownership.nature: These Common Shares are held by Blackstone Capital Partners (Cayman) IV-A L.P. ("BCP Cayman IV-A").

F6 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C., which is wholly owned by Blackstone's senior managing directors and controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is wholly owned by Blackstone's senior managing directors and controlled by its founder, Stephen A. Schwarzman.

F7 · ownership.nature: Due to the limitations of the electronic filing system certain Reporting Persons are filing a separate Form 4.

F8 · ownership.nature: Information with respect to each of the Reporting Persons is given solely by such Reporting Person, and no Reporting Person has responsibility for the accuracy or completeness of information supplied by another Reporting Person.

F9 · ownership.nature: Each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein), disclaims beneficial ownership of the securities held by the Blackstone Funds, except to the extent of such Reporting Person's pecuniary interest therein, and, pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein) states that the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all of the reported securities for purposes of Section 16 or for any other purpose.

Read SEC document
February 27, 2019 Filed Mar 1, 2019 22:01 UTC Kosmos Energy Ltd. KOS · Entity 4605 SaleCommon Shares 21,101,965 $6.51 $137,373,792.15
Disclosure

SEC source: 0000899243-19-005475 · doc4.xml · nonDerivative · entry 1

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 25,563,334

F1 · ownership.nature: These common shares, par value $0.01 per share (the "Common Shares"), of Kosmos Energy Ltd. (the "Issuer") are held by Blackstone Capital Partners (Cayman) IV L.P. ("BCP Cayman IV").

F6 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C., which is wholly owned by Blackstone's senior managing directors and controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is wholly owned by Blackstone's senior managing directors and controlled by its founder, Stephen A. Schwarzman.

F7 · ownership.nature: Due to the limitations of the electronic filing system certain Reporting Persons are filing a separate Form 4.

F8 · ownership.nature: Information with respect to each of the Reporting Persons is given solely by such Reporting Person, and no Reporting Person has responsibility for the accuracy or completeness of information supplied by another Reporting Person.

F9 · ownership.nature: Each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein), disclaims beneficial ownership of the securities held by the Blackstone Funds, except to the extent of such Reporting Person's pecuniary interest therein, and, pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein) states that the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all of the reported securities for purposes of Section 16 or for any other purpose.

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September 19, 2018 Filed Sep 21, 2018 20:42 UTC Kosmos Energy Ltd. KOS · Entity 4605 SaleCommon Shares 8,956 $8.94 $80,066.64
Disclosure

SEC source: 0000899243-18-025011 · doc4.xml · nonDerivative · entry 5

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 135,227

F5 · ownership.nature: These Common Shares are held by Blackstone Participation Partnership (Cayman) IV L.P. ("BPP", together with BCP Cayman IV, BCP Cayman IV-A, BFIP and BFIP SMD, the "Blackstone Funds").

F6 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C., which is wholly owned by Blackstone's senior managing directors and controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is wholly owned by Blackstone's senior managing directors and controlled by its founder, Stephen A. Schwarzman.

F7 · ownership.nature: Due to the limitations of the electronic filing system certain Reporting Persons are filing a separate Form 4.

F8 · ownership.nature: Information with respect to each of the Reporting Persons is given solely by such Reporting Person, and no Reporting Person has responsibility for the accuracy or completeness of information supplied by another Reporting Person.

F9 · ownership.nature: Each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein), disclaims beneficial ownership of the securities held by the Blackstone Funds, except to the extent of such Reporting Person's pecuniary interest therein, and, pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein) states that the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all of the reported securities for purposes of Section 16 or for any other purpose.

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September 19, 2018 Filed Sep 21, 2018 20:42 UTC Kosmos Energy Ltd. KOS · Entity 4605 SaleCommon Shares 65,963 $8.94 $589,709.22
Disclosure

SEC source: 0000899243-18-025011 · doc4.xml · nonDerivative · entry 4

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 995,919

F4 · ownership.nature: These Common Shares are held by Blackstone Family Investment Partnership (Cayman) IV-A SMD L.P. ("BFIP SMD").

F6 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C., which is wholly owned by Blackstone's senior managing directors and controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is wholly owned by Blackstone's senior managing directors and controlled by its founder, Stephen A. Schwarzman.

F7 · ownership.nature: Due to the limitations of the electronic filing system certain Reporting Persons are filing a separate Form 4.

F8 · ownership.nature: Information with respect to each of the Reporting Persons is given solely by such Reporting Person, and no Reporting Person has responsibility for the accuracy or completeness of information supplied by another Reporting Person.

F9 · ownership.nature: Each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein), disclaims beneficial ownership of the securities held by the Blackstone Funds, except to the extent of such Reporting Person's pecuniary interest therein, and, pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein) states that the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all of the reported securities for purposes of Section 16 or for any other purpose.

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September 19, 2018 Filed Sep 21, 2018 20:42 UTC Kosmos Energy Ltd. KOS · Entity 4605 SaleCommon Shares 79,445 $8.94 $710,238.30
Disclosure

SEC source: 0000899243-18-025011 · doc4.xml · nonDerivative · entry 3

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 1,199,476

F3 · ownership.nature: These Common Shares are held by Blackstone Family Investment Partnership (Cayman) IV-A L.P. ("BFIP").

F6 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C., which is wholly owned by Blackstone's senior managing directors and controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is wholly owned by Blackstone's senior managing directors and controlled by its founder, Stephen A. Schwarzman.

F7 · ownership.nature: Due to the limitations of the electronic filing system certain Reporting Persons are filing a separate Form 4.

F8 · ownership.nature: Information with respect to each of the Reporting Persons is given solely by such Reporting Person, and no Reporting Person has responsibility for the accuracy or completeness of information supplied by another Reporting Person.

F9 · ownership.nature: Each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein), disclaims beneficial ownership of the securities held by the Blackstone Funds, except to the extent of such Reporting Person's pecuniary interest therein, and, pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein) states that the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all of the reported securities for purposes of Section 16 or for any other purpose.

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September 19, 2018 Filed Sep 21, 2018 20:42 UTC Kosmos Energy Ltd. KOS · Entity 4605 SaleCommon Shares 50,405 $8.94 $450,620.70
Disclosure

SEC source: 0000899243-18-025011 · doc4.xml · nonDerivative · entry 2

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 761,020

F2 · ownership.nature: These Common Shares are held by Blackstone Capital Partners (Cayman) IV-A L.P. ("BCP Cayman IV-A").

F6 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C., which is wholly owned by Blackstone's senior managing directors and controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is wholly owned by Blackstone's senior managing directors and controlled by its founder, Stephen A. Schwarzman.

F7 · ownership.nature: Due to the limitations of the electronic filing system certain Reporting Persons are filing a separate Form 4.

F8 · ownership.nature: Information with respect to each of the Reporting Persons is given solely by such Reporting Person, and no Reporting Person has responsibility for the accuracy or completeness of information supplied by another Reporting Person.

F9 · ownership.nature: Each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein), disclaims beneficial ownership of the securities held by the Blackstone Funds, except to the extent of such Reporting Person's pecuniary interest therein, and, pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein) states that the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all of the reported securities for purposes of Section 16 or for any other purpose.

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September 19, 2018 Filed Sep 21, 2018 20:42 UTC Kosmos Energy Ltd. KOS · Entity 4605 SaleCommon Shares 3,090,802 $8.94 $27,631,769.88
Disclosure

SEC source: 0000899243-18-025011 · doc4.xml · nonDerivative · entry 1

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 46,665,299

F1 · ownership.nature: These common shares, par value $0.01 per share (the "Common Shares"), of Kosmos Energy Ltd. (the "Issuer") are held by Blackstone Capital Partners (Cayman) IV L.P. ("BCP Cayman IV").

F6 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C., which is wholly owned by Blackstone's senior managing directors and controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is wholly owned by Blackstone's senior managing directors and controlled by its founder, Stephen A. Schwarzman.

F7 · ownership.nature: Due to the limitations of the electronic filing system certain Reporting Persons are filing a separate Form 4.

F8 · ownership.nature: Information with respect to each of the Reporting Persons is given solely by such Reporting Person, and no Reporting Person has responsibility for the accuracy or completeness of information supplied by another Reporting Person.

F9 · ownership.nature: Each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein), disclaims beneficial ownership of the securities held by the Blackstone Funds, except to the extent of such Reporting Person's pecuniary interest therein, and, pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein) states that the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all of the reported securities for purposes of Section 16 or for any other purpose.

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May 26, 2017 Filed May 31, 2017 22:00 UTC Kosmos Energy Ltd. KOS · Entity 4605 SaleCommon Shares 88,066 $7.15 $629,671.90
Disclosure

SEC source: 0000899243-17-014854 · doc4.xml · nonDerivative · entry 5

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 144,183

F1 · price: This amount represents the $7.25 public offering price per common share, par value $0.01 per share (the "Common Shares"), of Kosmos Energy Ltd. (the "Issuer"), less the underwriting discount of $0.10 per Common Share.

F6 · ownership.nature: These Common Shares are held by Blackstone Participation Partnership (Cayman) IV L.P. ("BPP", together with BCP Cayman IV, BCP Cayman IV-A, BFIP and BFIP SMD, the "Blackstone Funds").

F7 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C., which is wholly owned by Blackstone's senior managing directors and controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is wholly owned by Blackstone's senior managing directors and controlled by its founder, Stephen A. Schwarzman.

F8 · ownership.nature: Due to the limitations of the electronic filing system certain Reporting Persons are filing a separate Form 4.

F9 · ownership.nature: Information with respect to each of the Reporting Persons is given solely by such Reporting Person, and no Reporting Person has responsibility for the accuracy or completeness of information supplied by another Reporting Person.

F10 · ownership.nature: Each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein), disclaims beneficial ownership of the securities held by the Blackstone Funds, except to the extent of such Reporting Person's pecuniary interest therein, and, pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein) states that the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all of the reported securities for purposes of Section 16 or for any other purpose.

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May 26, 2017 Filed May 31, 2017 22:00 UTC Kosmos Energy Ltd. KOS · Entity 4605 SaleCommon Shares 648,610 $7.15 $4,637,561.50
Disclosure

SEC source: 0000899243-17-014854 · doc4.xml · nonDerivative · entry 4

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 1,061,882

F1 · price: This amount represents the $7.25 public offering price per common share, par value $0.01 per share (the "Common Shares"), of Kosmos Energy Ltd. (the "Issuer"), less the underwriting discount of $0.10 per Common Share.

F5 · ownership.nature: These Common Shares are held by Blackstone Family Investment Partnership (Cayman) IV-A SMD L.P. ("BFIP SMD").

F7 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C., which is wholly owned by Blackstone's senior managing directors and controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is wholly owned by Blackstone's senior managing directors and controlled by its founder, Stephen A. Schwarzman.

F8 · ownership.nature: Due to the limitations of the electronic filing system certain Reporting Persons are filing a separate Form 4.

F9 · ownership.nature: Information with respect to each of the Reporting Persons is given solely by such Reporting Person, and no Reporting Person has responsibility for the accuracy or completeness of information supplied by another Reporting Person.

F10 · ownership.nature: Each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein), disclaims beneficial ownership of the securities held by the Blackstone Funds, except to the extent of such Reporting Person's pecuniary interest therein, and, pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein) states that the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all of the reported securities for purposes of Section 16 or for any other purpose.

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May 26, 2017 Filed May 31, 2017 22:00 UTC Kosmos Energy Ltd. KOS · Entity 4605 SaleCommon Shares 781,182 $7.15 $5,585,451.30
Disclosure

SEC source: 0000899243-17-014854 · doc4.xml · nonDerivative · entry 3

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 1,278,921

F1 · price: This amount represents the $7.25 public offering price per common share, par value $0.01 per share (the "Common Shares"), of Kosmos Energy Ltd. (the "Issuer"), less the underwriting discount of $0.10 per Common Share.

F4 · ownership.nature: These Common Shares are held by Blackstone Family Investment Partnership (Cayman) IV-A L.P. ("BFIP").

F7 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C., which is wholly owned by Blackstone's senior managing directors and controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is wholly owned by Blackstone's senior managing directors and controlled by its founder, Stephen A. Schwarzman.

F8 · ownership.nature: Due to the limitations of the electronic filing system certain Reporting Persons are filing a separate Form 4.

F9 · ownership.nature: Information with respect to each of the Reporting Persons is given solely by such Reporting Person, and no Reporting Person has responsibility for the accuracy or completeness of information supplied by another Reporting Person.

F10 · ownership.nature: Each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein), disclaims beneficial ownership of the securities held by the Blackstone Funds, except to the extent of such Reporting Person's pecuniary interest therein, and, pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein) states that the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all of the reported securities for purposes of Section 16 or for any other purpose.

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May 26, 2017 Filed May 31, 2017 22:00 UTC Kosmos Energy Ltd. KOS · Entity 4605 SaleCommon Shares 457,034 $7.15 $3,267,793.10
Disclosure

SEC source: 0000899243-17-014854 · doc4.xml · nonDerivative · entry 2

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 811,425

F1 · price: This amount represents the $7.25 public offering price per common share, par value $0.01 per share (the "Common Shares"), of Kosmos Energy Ltd. (the "Issuer"), less the underwriting discount of $0.10 per Common Share.

F3 · ownership.nature: These Common Shares are held by Blackstone Capital Partners (Cayman) IV-A L.P. ("BCP Cayman IV-A").

F7 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C., which is wholly owned by Blackstone's senior managing directors and controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is wholly owned by Blackstone's senior managing directors and controlled by its founder, Stephen A. Schwarzman.

F8 · ownership.nature: Due to the limitations of the electronic filing system certain Reporting Persons are filing a separate Form 4.

F9 · ownership.nature: Information with respect to each of the Reporting Persons is given solely by such Reporting Person, and no Reporting Person has responsibility for the accuracy or completeness of information supplied by another Reporting Person.

F10 · ownership.nature: Each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein), disclaims beneficial ownership of the securities held by the Blackstone Funds, except to the extent of such Reporting Person's pecuniary interest therein, and, pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein) states that the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all of the reported securities for purposes of Section 16 or for any other purpose.

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May 26, 2017 Filed May 31, 2017 22:00 UTC Kosmos Energy Ltd. KOS · Entity 4605 SaleCommon Shares 28,025,108 $7.15 $200,379,522.20
Disclosure

SEC source: 0000899243-17-014854 · doc4.xml · nonDerivative · entry 1

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 49,756,101

F1 · price: This amount represents the $7.25 public offering price per common share, par value $0.01 per share (the "Common Shares"), of Kosmos Energy Ltd. (the "Issuer"), less the underwriting discount of $0.10 per Common Share.

F2 · ownership.nature: These Common Shares are held by Blackstone Capital Partners (Cayman) IV L.P. ("BCP Cayman IV").

F7 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C., which is wholly owned by Blackstone's senior managing directors and controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is wholly owned by Blackstone's senior managing directors and controlled by its founder, Stephen A. Schwarzman.

F8 · ownership.nature: Due to the limitations of the electronic filing system certain Reporting Persons are filing a separate Form 4.

F9 · ownership.nature: Information with respect to each of the Reporting Persons is given solely by such Reporting Person, and no Reporting Person has responsibility for the accuracy or completeness of information supplied by another Reporting Person.

F10 · ownership.nature: Each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein), disclaims beneficial ownership of the securities held by the Blackstone Funds, except to the extent of such Reporting Person's pecuniary interest therein, and, pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein) states that the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all of the reported securities for purposes of Section 16 or for any other purpose.

Read SEC document
January 18, 2017 Filed Jan 20, 2017 23:00 UTC Kosmos Energy Ltd. KOS · Entity 4605 SaleCommon Shares 37,752 $6.58 $248,408.16
Disclosure

SEC source: 0000899243-17-001679 · doc4.xml · nonDerivative · entry 5

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 232,249

F1 · price: This amount represents the $6.65 public offering price per common share, par value $0.01 per share (the "Common Shares"), of Kosmos Energy Ltd. (the "Issuer"), less the underwriting discount of $0.07 per Common Share.

F6 · ownership.nature: These Common Shares are held by Blackstone Participation Partnership (Cayman) IV L.P. ("BPP", together with BCP Cayman IV, BCP Cayman IV-A, BFIP and BFIP SMD, the "Blackstone Funds").

F7 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C., which is wholly owned by Blackstone's senior managing directors and controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is wholly owned by Blackstone's senior managing directors and controlled by its founder, Stephen A. Schwarzman.

F8 · ownership.nature: Due to the limitations of the electronic filing system certain Reporting Persons are filing a separate Form 4.

F9 · ownership.nature: Information with respect to each of the Reporting Persons is given solely by such Reporting Person, and no Reporting Person has responsibility for the accuracy or completeness of information supplied by another Reporting Person.

F10 · ownership.nature: Each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein), disclaims beneficial ownership of the securities held by the Blackstone Funds, except to the extent of such Reporting Person's pecuniary interest therein, and, pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein) states that the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all of the reported securities for purposes of Section 16 or for any other purpose.

Read SEC document
January 18, 2017 Filed Jan 20, 2017 23:00 UTC Kosmos Energy Ltd. KOS · Entity 4605 SaleCommon Shares 278,037 $6.58 $1,829,483.46
Disclosure

SEC source: 0000899243-17-001679 · doc4.xml · nonDerivative · entry 4

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 1,710,492

F1 · price: This amount represents the $6.65 public offering price per common share, par value $0.01 per share (the "Common Shares"), of Kosmos Energy Ltd. (the "Issuer"), less the underwriting discount of $0.07 per Common Share.

F5 · ownership.nature: These Common Shares are held by Blackstone Family Investment Partnership (Cayman) IV-A SMD L.P. ("BFIP SMD").

F7 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C., which is wholly owned by Blackstone's senior managing directors and controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is wholly owned by Blackstone's senior managing directors and controlled by its founder, Stephen A. Schwarzman.

F8 · ownership.nature: Due to the limitations of the electronic filing system certain Reporting Persons are filing a separate Form 4.

F9 · ownership.nature: Information with respect to each of the Reporting Persons is given solely by such Reporting Person, and no Reporting Person has responsibility for the accuracy or completeness of information supplied by another Reporting Person.

F10 · ownership.nature: Each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein), disclaims beneficial ownership of the securities held by the Blackstone Funds, except to the extent of such Reporting Person's pecuniary interest therein, and, pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein) states that the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all of the reported securities for purposes of Section 16 or for any other purpose.

Read SEC document
January 18, 2017 Filed Jan 20, 2017 23:00 UTC Kosmos Energy Ltd. KOS · Entity 4605 SaleCommon Shares 334,865 $6.58 $2,203,411.70
Disclosure

SEC source: 0000899243-17-001679 · doc4.xml · nonDerivative · entry 3

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 2,060,103

F1 · price: This amount represents the $6.65 public offering price per common share, par value $0.01 per share (the "Common Shares"), of Kosmos Energy Ltd. (the "Issuer"), less the underwriting discount of $0.07 per Common Share.

F4 · ownership.nature: These Common Shares are held by Blackstone Family Investment Partnership (Cayman) IV-A L.P. ("BFIP").

F7 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C., which is wholly owned by Blackstone's senior managing directors and controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is wholly owned by Blackstone's senior managing directors and controlled by its founder, Stephen A. Schwarzman.

F8 · ownership.nature: Due to the limitations of the electronic filing system certain Reporting Persons are filing a separate Form 4.

F9 · ownership.nature: Information with respect to each of the Reporting Persons is given solely by such Reporting Person, and no Reporting Person has responsibility for the accuracy or completeness of information supplied by another Reporting Person.

F10 · ownership.nature: Each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein), disclaims beneficial ownership of the securities held by the Blackstone Funds, except to the extent of such Reporting Person's pecuniary interest therein, and, pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein) states that the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all of the reported securities for purposes of Section 16 or for any other purpose.

Read SEC document
January 18, 2017 Filed Jan 20, 2017 23:00 UTC Kosmos Energy Ltd. KOS · Entity 4605 SaleCommon Shares 206,185 $6.58 $1,356,697.30
Disclosure

SEC source: 0000899243-17-001679 · doc4.xml · nonDerivative · entry 2

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 1,268,459

F1 · price: This amount represents the $6.65 public offering price per common share, par value $0.01 per share (the "Common Shares"), of Kosmos Energy Ltd. (the "Issuer"), less the underwriting discount of $0.07 per Common Share.

F3 · ownership.nature: These Common Shares are held by Blackstone Capital Partners (Cayman) IV-A L.P. ("BCP Cayman IV-A").

F7 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C., which is wholly owned by Blackstone's senior managing directors and controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is wholly owned by Blackstone's senior managing directors and controlled by its founder, Stephen A. Schwarzman.

F8 · ownership.nature: Due to the limitations of the electronic filing system certain Reporting Persons are filing a separate Form 4.

F9 · ownership.nature: Information with respect to each of the Reporting Persons is given solely by such Reporting Person, and no Reporting Person has responsibility for the accuracy or completeness of information supplied by another Reporting Person.

F10 · ownership.nature: Each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein), disclaims beneficial ownership of the securities held by the Blackstone Funds, except to the extent of such Reporting Person's pecuniary interest therein, and, pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein) states that the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all of the reported securities for purposes of Section 16 or for any other purpose.

Read SEC document
January 18, 2017 Filed Jan 20, 2017 23:00 UTC Kosmos Energy Ltd. KOS · Entity 4605 SaleCommon Shares 12,643,161 $6.58 $83,191,999.38
Disclosure

SEC source: 0000899243-17-001679 · doc4.xml · nonDerivative · entry 1

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 77,781,209

F1 · price: This amount represents the $6.65 public offering price per common share, par value $0.01 per share (the "Common Shares"), of Kosmos Energy Ltd. (the "Issuer"), less the underwriting discount of $0.07 per Common Share.

F2 · ownership.nature: These Common Shares are held by Blackstone Capital Partners (Cayman) IV L.P. ("BCP Cayman IV").

F7 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C., which is wholly owned by Blackstone's senior managing directors and controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is wholly owned by Blackstone's senior managing directors and controlled by its founder, Stephen A. Schwarzman.

F8 · ownership.nature: Due to the limitations of the electronic filing system certain Reporting Persons are filing a separate Form 4.

F9 · ownership.nature: Information with respect to each of the Reporting Persons is given solely by such Reporting Person, and no Reporting Person has responsibility for the accuracy or completeness of information supplied by another Reporting Person.

F10 · ownership.nature: Each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein), disclaims beneficial ownership of the securities held by the Blackstone Funds, except to the extent of such Reporting Person's pecuniary interest therein, and, pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, each of the Reporting Persons (other than each of the Blackstone Funds to the extent they directly hold securities reported herein) states that the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all of the reported securities for purposes of Section 16 or for any other purpose.

Read SEC document
October 10, 2014 Filed Oct 10, 2014 21:35 UTC Kosmos Energy Ltd. KOS · Entity 4605 SaleCommon Shares 18,345 $9.33 $171,158.85
Disclosure

SEC source: 0001181431-14-034201 · rrd417509.xml · nonDerivative · entry 5

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 270,001

F1 · price: This amount represents the $9.33 price per common share, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") received by the Blackstone Funds (as defined below) in an underwritten secondary block trade.

F6 · ownership.nature: These Common Shares are held by Blackstone Participation Partnership (Cayman) IV L.P. ("BPP", together with BCP Cayman IV, BCP Cayman IV-A BFIP and BFIP SMD, the "Blackstone Funds").

F7 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C. which is controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is controlled by Mr. Stephen A. Schwarzman, its founder.

F8 · ownership.nature: Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Persons are the beneficial owners of any securities reported herein.

Read SEC document
October 10, 2014 Filed Oct 10, 2014 21:35 UTC Kosmos Energy Ltd. KOS · Entity 4605 SaleCommon Shares 135,106 $9.33 $1,260,538.98
Disclosure

SEC source: 0001181431-14-034201 · rrd417509.xml · nonDerivative · entry 4

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 1,988,529

F1 · price: This amount represents the $9.33 price per common share, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") received by the Blackstone Funds (as defined below) in an underwritten secondary block trade.

F5 · ownership.nature: These Common Shares are held by Blackstone Family Investment Partnership (Cayman) IV-A SMD L.P. ("BFIP SMD").

F7 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C. which is controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is controlled by Mr. Stephen A. Schwarzman, its founder.

F8 · ownership.nature: Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Persons are the beneficial owners of any securities reported herein.

Read SEC document
October 10, 2014 Filed Oct 10, 2014 21:35 UTC Kosmos Energy Ltd. KOS · Entity 4605 SaleCommon Shares 162,720 $9.33 $1,518,177.60
Disclosure

SEC source: 0001181431-14-034201 · rrd417509.xml · nonDerivative · entry 3

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 2,394,968

F1 · price: This amount represents the $9.33 price per common share, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") received by the Blackstone Funds (as defined below) in an underwritten secondary block trade.

F4 · ownership.nature: These Common Shares are held by Blackstone Family Investment Partnership (Cayman) IV-A L.P. ("BFIP").

F7 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C. which is controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is controlled by Mr. Stephen A. Schwarzman, its founder.

F8 · ownership.nature: Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Persons are the beneficial owners of any securities reported herein.

Read SEC document
October 10, 2014 Filed Oct 10, 2014 21:35 UTC Kosmos Energy Ltd. KOS · Entity 4605 SaleCommon Shares 103,240 $9.33 $963,229.20
Disclosure

SEC source: 0001181431-14-034201 · rrd417509.xml · nonDerivative · entry 2

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 1,474,644

F1 · price: This amount represents the $9.33 price per common share, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") received by the Blackstone Funds (as defined below) in an underwritten secondary block trade.

F3 · ownership.nature: These Common Shares are held by Blackstone Capital Partners (Cayman) IV-A L.P. ("BCP Cayman IV-A").

F7 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C. which is controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is controlled by Mr. Stephen A. Schwarzman, its founder.

F8 · ownership.nature: Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Persons are the beneficial owners of any securities reported herein.

Read SEC document
October 10, 2014 Filed Oct 10, 2014 21:35 UTC Kosmos Energy Ltd. KOS · Entity 4605 SaleCommon Shares 6,330,589 $9.33 $59,064,395.37
Disclosure

SEC source: 0001181431-14-034201 · rrd417509.xml · nonDerivative · entry 1

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 90,424,370

F1 · price: This amount represents the $9.33 price per common share, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") received by the Blackstone Funds (as defined below) in an underwritten secondary block trade.

F2 · ownership.nature: These Common Shares are held by Blackstone Capital Partners (Cayman) IV L.P. ("BCP Cayman IV").

F7 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C. which is controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is controlled by Mr. Stephen A. Schwarzman, its founder.

F8 · ownership.nature: Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Persons are the beneficial owners of any securities reported herein.

Read SEC document
July 15, 2014 Filed Jul 17, 2014 20:05 UTC Kosmos Energy Ltd. KOS · Entity 4605 SaleCommon Shares 23,910 $9.85 $235,513.50
Disclosure

SEC source: 0001209191-14-047759 · doc4.xml · nonDerivative · entry 5

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 288,346

F1 · price: This amount represents the $9.92 secondary public offering price per common share, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") less the underwriting discount of $0.07 per share.

F6 · ownership.nature: These Common Shares are held by Blackstone Participation Partnership (Cayman) IV L.P. ("BPP").

F7 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C. which is controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is controlled by Mr. Stephen A. Schwarzman, its founder.

F8 · ownership.nature: Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Persons are the beneficial owners of any securities reported herein.

Read SEC document
July 15, 2014 Filed Jul 17, 2014 20:05 UTC Kosmos Energy Ltd. KOS · Entity 4605 SaleCommon Shares 176,088 $9.85 $1,734,466.80
Disclosure

SEC source: 0001209191-14-047759 · doc4.xml · nonDerivative · entry 4

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 2,123,635

F1 · price: This amount represents the $9.92 secondary public offering price per common share, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") less the underwriting discount of $0.07 per share.

F5 · ownership.nature: These Common Shares are held by Blackstone Family Investment Partnership (Cayman) IV-A SMD L.P. ("BFIP SMD").

F7 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C. which is controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is controlled by Mr. Stephen A. Schwarzman, its founder.

F8 · ownership.nature: Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Persons are the beneficial owners of any securities reported herein.

Read SEC document
July 15, 2014 Filed Jul 17, 2014 20:05 UTC Kosmos Energy Ltd. KOS · Entity 4605 SaleCommon Shares 212,078 $9.85 $2,088,968.30
Disclosure

SEC source: 0001209191-14-047759 · doc4.xml · nonDerivative · entry 3

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 2,557,688

F1 · price: This amount represents the $9.92 secondary public offering price per common share, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") less the underwriting discount of $0.07 per share.

F4 · ownership.nature: These Common Shares are held by Blackstone Family Investment Partnership (Cayman) IV-A L.P. ("BFIP").

F7 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C. which is controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is controlled by Mr. Stephen A. Schwarzman, its founder.

F8 · ownership.nature: Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Persons are the beneficial owners of any securities reported herein.

Read SEC document
July 15, 2014 Filed Jul 17, 2014 20:05 UTC Kosmos Energy Ltd. KOS · Entity 4605 SaleCommon Shares 134,556 $9.85 $1,325,376.60
Disclosure

SEC source: 0001209191-14-047759 · doc4.xml · nonDerivative · entry 2

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 1,577,884

F1 · price: This amount represents the $9.92 secondary public offering price per common share, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") less the underwriting discount of $0.07 per share.

F3 · ownership.nature: These Common Shares are held by Blackstone Capital Partners (Cayman) IV-A L.P. ("BCP Cayman IV-A").

F7 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C. which is controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is controlled by Mr. Stephen A. Schwarzman, its founder.

F8 · ownership.nature: Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Persons are the beneficial owners of any securities reported herein.

Read SEC document
July 15, 2014 Filed Jul 17, 2014 20:05 UTC Kosmos Energy Ltd. KOS · Entity 4605 SaleCommon Shares 8,250,868 $9.85 $81,271,049.80
Disclosure

SEC source: 0001209191-14-047759 · doc4.xml · nonDerivative · entry 1

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 96,754,959

F1 · price: This amount represents the $9.92 secondary public offering price per common share, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") less the underwriting discount of $0.07 per share.

F2 · ownership.nature: These Common Shares are held by Blackstone Capital Partners (Cayman) IV L.P. ("BCP Cayman IV").

F7 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C. which is controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is controlled by Mr. Stephen A. Schwarzman, its founder.

F8 · ownership.nature: Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Persons are the beneficial owners of any securities reported herein.

Read SEC document
March 15, 2013 Filed Mar 19, 2013 23:35 UTC Kosmos Energy Ltd. KOS · Entity 4605 SaleCommon Shares 5,221 $10.59 $55,277.34
Disclosure

SEC source: 0001181431-13-017933 · rrd374472.xml · nonDerivative · entry 5

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 312,256

F1 · price: This amount represents the $11.00 secondary public offering price per common share, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") less the underwriting discount of $0.4125 per share in connection with the exercise by the underwriters of their over-allotment option.

F6 · ownership.nature: These Common Shares are held by Blackstone Participation Partnership (Cayman) IV L.P. ("BPP").

F7 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C. which is controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is controlled by Mr. Stephen A. Schwarzman, its founder.

F8 · ownership.nature: Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Persons are the beneficial owners of any securities reported herein.

Read SEC document
March 15, 2013 Filed Mar 19, 2013 23:35 UTC Kosmos Energy Ltd. KOS · Entity 4605 SaleCommon Shares 38,450 $10.59 $407,089.38
Disclosure

SEC source: 0001181431-13-017933 · rrd374472.xml · nonDerivative · entry 4

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 2,299,722

F1 · price: This amount represents the $11.00 secondary public offering price per common share, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") less the underwriting discount of $0.4125 per share in connection with the exercise by the underwriters of their over-allotment option.

F5 · ownership.nature: These Common Shares are held by Blackstone Family Investment Partnership (Cayman) IV-A SMD L.P. ("BFIP SMD").

F7 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C. which is controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is controlled by Mr. Stephen A. Schwarzman, its founder.

F8 · ownership.nature: Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Persons are the beneficial owners of any securities reported herein.

Read SEC document
March 15, 2013 Filed Mar 19, 2013 23:35 UTC Kosmos Energy Ltd. KOS · Entity 4605 SaleCommon Shares 46,308 $10.59 $490,285.95
Disclosure

SEC source: 0001181431-13-017933 · rrd374472.xml · nonDerivative · entry 3

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 2,769,766

F1 · price: This amount represents the $11.00 secondary public offering price per common share, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") less the underwriting discount of $0.4125 per share in connection with the exercise by the underwriters of their over-allotment option.

F4 · ownership.nature: These Common Shares are held by Blackstone Family Investment Partnership (Cayman) IV-A L.P. ("BFIP").

F7 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C. which is controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is controlled by Mr. Stephen A. Schwarzman, its founder.

F8 · ownership.nature: Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Persons are the beneficial owners of any securities reported herein.

Read SEC document
March 15, 2013 Filed Mar 19, 2013 23:35 UTC Kosmos Energy Ltd. KOS · Entity 4605 SaleCommon Shares 28,631 $10.59 $303,130.71
Disclosure

SEC source: 0001181431-13-017933 · rrd374472.xml · nonDerivative · entry 2

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 1,712,440

F1 · price: This amount represents the $11.00 secondary public offering price per common share, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") less the underwriting discount of $0.4125 per share in connection with the exercise by the underwriters of their over-allotment option.

F3 · ownership.nature: These Common Shares are held by Blackstone Capital Partners (Cayman) IV-A L.P. ("BCP Cayman IV-A").

F7 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C. which is controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is controlled by Mr. Stephen A. Schwarzman, its founder.

F8 · ownership.nature: Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Persons are the beneficial owners of any securities reported herein.

Read SEC document
March 15, 2013 Filed Mar 19, 2013 23:35 UTC Kosmos Energy Ltd. KOS · Entity 4605 SaleCommon Shares 1,755,619 $10.59 $18,587,616.16
Disclosure

SEC source: 0001181431-13-017933 · rrd374472.xml · nonDerivative · entry 1

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 105,005,826

F1 · price: This amount represents the $11.00 secondary public offering price per common share, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") less the underwriting discount of $0.4125 per share in connection with the exercise by the underwriters of their over-allotment option.

F2 · ownership.nature: These Common Shares are held by Blackstone Capital Partners (Cayman) IV L.P. ("BCP Cayman IV").

F7 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C. which is controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is controlled by Mr. Stephen A. Schwarzman, its founder.

F8 · ownership.nature: Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Persons are the beneficial owners of any securities reported herein.

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February 21, 2013 Filed Feb 25, 2013 19:08 UTC Kosmos Energy Ltd. KOS · Entity 4605 SaleCommon Shares 34,362 $10.59 $363,807.68
Disclosure

SEC source: 0001181431-13-012147 · rrd371668.xml · nonDerivative · entry 5

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 317,477

F1 · price: This amount represents the $11.00 secondary public offering price per common share, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") less the underwriting discount of $0.4125 per share.

F6 · ownership.nature: These Common Shares are held by Blackstone Participation Partnership (Cayman) IV L.P. ("BPP").

F7 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C. which is controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is controlled by Mr. Stephen A. Schwarzman, its founder.

F8 · ownership.nature: Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Persons are the beneficial owners of any securities reported herein.

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February 21, 2013 Filed Feb 25, 2013 19:08 UTC Kosmos Energy Ltd. KOS · Entity 4605 SaleCommon Shares 253,071 $10.59 $2,679,389.21
Disclosure

SEC source: 0001181431-13-012147 · rrd371668.xml · nonDerivative · entry 4

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 2,338,172

F1 · price: This amount represents the $11.00 secondary public offering price per common share, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") less the underwriting discount of $0.4125 per share.

F5 · ownership.nature: These Common Shares are held by Blackstone Family Investment Partnership (Cayman) IV-A SMD L.P. ("BFIP SMD").

F7 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C. which is controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is controlled by Mr. Stephen A. Schwarzman, its founder.

F8 · ownership.nature: Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Persons are the beneficial owners of any securities reported herein.

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February 21, 2013 Filed Feb 25, 2013 19:08 UTC Kosmos Energy Ltd. KOS · Entity 4605 SaleCommon Shares 304,796 $10.59 $3,227,027.65
Disclosure

SEC source: 0001181431-13-012147 · rrd371668.xml · nonDerivative · entry 3

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 2,816,074

F1 · price: This amount represents the $11.00 secondary public offering price per common share, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") less the underwriting discount of $0.4125 per share.

F4 · ownership.nature: These Common Shares are held by Blackstone Family Investment Partnership (Cayman) IV-A L.P. ("BFIP").

F7 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C. which is controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is controlled by Mr. Stephen A. Schwarzman, its founder.

F8 · ownership.nature: Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Persons are the beneficial owners of any securities reported herein.

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February 21, 2013 Filed Feb 25, 2013 19:08 UTC Kosmos Energy Ltd. KOS · Entity 4605 SaleCommon Shares 188,444 $10.59 $1,995,150.85
Disclosure

SEC source: 0001181431-13-012147 · rrd371668.xml · nonDerivative · entry 2

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 1,741,071

F1 · price: This amount represents the $11.00 secondary public offering price per common share, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") less the underwriting discount of $0.4125 per share.

F3 · ownership.nature: These Common Shares are held by Blackstone Capital Partners (Cayman) IV-A L.P. ("BCP Cayman IV-A").

F7 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C. which is controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is controlled by Mr. Stephen A. Schwarzman, its founder.

F8 · ownership.nature: Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Persons are the beneficial owners of any securities reported herein.

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February 21, 2013 Filed Feb 25, 2013 19:08 UTC Kosmos Energy Ltd. KOS · Entity 4605 SaleCommon Shares 11,555,266 $10.59 $122,341,378.78
Disclosure

SEC source: 0001181431-13-012147 · rrd371668.xml · nonDerivative · entry 1

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 106,761,445

F1 · price: This amount represents the $11.00 secondary public offering price per common share, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") less the underwriting discount of $0.4125 per share.

F2 · ownership.nature: These Common Shares are held by Blackstone Capital Partners (Cayman) IV L.P. ("BCP Cayman IV").

F7 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C. which is controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is controlled by Mr. Stephen A. Schwarzman, its founder.

F8 · ownership.nature: Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Persons are the beneficial owners of any securities reported herein.

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May 16, 2011 Filed May 18, 2011 20:54 UTC Kosmos Energy Ltd. KOS · Entity 4605 OtherC1 Units · Derivative 3,066 $0.00 $0.00
Disclosure

SEC source: 0001181431-11-030791 · rrd312258.xml · derivative · entry 25

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 0

Underlying: Common Shares · 11,325 shares

Expires not disclosed

F1 · derivative.exercise_price: The common shares, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") were issued in exchange for the outstanding units in Kosmos Energy Holdings ("KEH") listed in Table II pursuant to a corporate reorganization (the "Corporate Reorganization") in connection with the initial public offering of Common Shares, which units were exchangeable pursuant to the Fourth Amended and Restated Operating Agreement of KEH upon the closing of the initial public offering of the Issuer based on the pre-offering equity value of such units.

F1 · kind: The common shares, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") were issued in exchange for the outstanding units in Kosmos Energy Holdings ("KEH") listed in Table II pursuant to a corporate reorganization (the "Corporate Reorganization") in connection with the initial public offering of Common Shares, which units were exchangeable pursuant to the Fourth Amended and Restated Operating Agreement of KEH upon the closing of the initial public offering of the Issuer based on the pre-offering equity value of such units.

F1 · derivative.exercise_date: The common shares, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") were issued in exchange for the outstanding units in Kosmos Energy Holdings ("KEH") listed in Table II pursuant to a corporate reorganization (the "Corporate Reorganization") in connection with the initial public offering of Common Shares, which units were exchangeable pursuant to the Fourth Amended and Restated Operating Agreement of KEH upon the closing of the initial public offering of the Issuer based on the pre-offering equity value of such units.

F1 · derivative.expiration_date: The common shares, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") were issued in exchange for the outstanding units in Kosmos Energy Holdings ("KEH") listed in Table II pursuant to a corporate reorganization (the "Corporate Reorganization") in connection with the initial public offering of Common Shares, which units were exchangeable pursuant to the Fourth Amended and Restated Operating Agreement of KEH upon the closing of the initial public offering of the Issuer based on the pre-offering equity value of such units.

F11 · ownership.nature: Reflects the number of units of KEH owned by BPP prior to their exchange on May 16, 2011 pursuant to the Corporate Reorganization.

F12 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C. which is controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is controlled by Mr. Stephen A. Schwarzman, its founder.

F13 · ownership.nature: Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Persons are the beneficial owners of any securities reported herein

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May 16, 2011 Filed May 18, 2011 20:54 UTC Kosmos Energy Ltd. KOS · Entity 4605 OtherSeries C Convertible Preferred Units · Derivative 1,085 $0.00 $0.00
Disclosure

SEC source: 0001181431-11-030791 · rrd312258.xml · derivative · entry 24

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 0

Underlying: Common Shares · 5,899 shares

Expires not disclosed

F1 · derivative.exercise_price: The common shares, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") were issued in exchange for the outstanding units in Kosmos Energy Holdings ("KEH") listed in Table II pursuant to a corporate reorganization (the "Corporate Reorganization") in connection with the initial public offering of Common Shares, which units were exchangeable pursuant to the Fourth Amended and Restated Operating Agreement of KEH upon the closing of the initial public offering of the Issuer based on the pre-offering equity value of such units.

F1 · kind: The common shares, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") were issued in exchange for the outstanding units in Kosmos Energy Holdings ("KEH") listed in Table II pursuant to a corporate reorganization (the "Corporate Reorganization") in connection with the initial public offering of Common Shares, which units were exchangeable pursuant to the Fourth Amended and Restated Operating Agreement of KEH upon the closing of the initial public offering of the Issuer based on the pre-offering equity value of such units.

F1 · derivative.exercise_date: The common shares, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") were issued in exchange for the outstanding units in Kosmos Energy Holdings ("KEH") listed in Table II pursuant to a corporate reorganization (the "Corporate Reorganization") in connection with the initial public offering of Common Shares, which units were exchangeable pursuant to the Fourth Amended and Restated Operating Agreement of KEH upon the closing of the initial public offering of the Issuer based on the pre-offering equity value of such units.

F1 · derivative.expiration_date: The common shares, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") were issued in exchange for the outstanding units in Kosmos Energy Holdings ("KEH") listed in Table II pursuant to a corporate reorganization (the "Corporate Reorganization") in connection with the initial public offering of Common Shares, which units were exchangeable pursuant to the Fourth Amended and Restated Operating Agreement of KEH upon the closing of the initial public offering of the Issuer based on the pre-offering equity value of such units.

F11 · ownership.nature: Reflects the number of units of KEH owned by BPP prior to their exchange on May 16, 2011 pursuant to the Corporate Reorganization.

F12 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C. which is controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is controlled by Mr. Stephen A. Schwarzman, its founder.

F13 · ownership.nature: Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Persons are the beneficial owners of any securities reported herein

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May 16, 2011 Filed May 18, 2011 20:54 UTC Kosmos Energy Ltd. KOS · Entity 4605 OtherSeries B Convertible Preferred Units · Derivative 23,040 $0.00 $0.00
Disclosure

SEC source: 0001181431-11-030791 · rrd312258.xml · derivative · entry 23

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 0

Underlying: Common Shares · 126,533 shares

Expires not disclosed

F1 · derivative.exercise_price: The common shares, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") were issued in exchange for the outstanding units in Kosmos Energy Holdings ("KEH") listed in Table II pursuant to a corporate reorganization (the "Corporate Reorganization") in connection with the initial public offering of Common Shares, which units were exchangeable pursuant to the Fourth Amended and Restated Operating Agreement of KEH upon the closing of the initial public offering of the Issuer based on the pre-offering equity value of such units.

F1 · kind: The common shares, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") were issued in exchange for the outstanding units in Kosmos Energy Holdings ("KEH") listed in Table II pursuant to a corporate reorganization (the "Corporate Reorganization") in connection with the initial public offering of Common Shares, which units were exchangeable pursuant to the Fourth Amended and Restated Operating Agreement of KEH upon the closing of the initial public offering of the Issuer based on the pre-offering equity value of such units.

F1 · derivative.exercise_date: The common shares, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") were issued in exchange for the outstanding units in Kosmos Energy Holdings ("KEH") listed in Table II pursuant to a corporate reorganization (the "Corporate Reorganization") in connection with the initial public offering of Common Shares, which units were exchangeable pursuant to the Fourth Amended and Restated Operating Agreement of KEH upon the closing of the initial public offering of the Issuer based on the pre-offering equity value of such units.

F1 · derivative.expiration_date: The common shares, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") were issued in exchange for the outstanding units in Kosmos Energy Holdings ("KEH") listed in Table II pursuant to a corporate reorganization (the "Corporate Reorganization") in connection with the initial public offering of Common Shares, which units were exchangeable pursuant to the Fourth Amended and Restated Operating Agreement of KEH upon the closing of the initial public offering of the Issuer based on the pre-offering equity value of such units.

F11 · ownership.nature: Reflects the number of units of KEH owned by BPP prior to their exchange on May 16, 2011 pursuant to the Corporate Reorganization.

F12 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C. which is controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is controlled by Mr. Stephen A. Schwarzman, its founder.

F13 · ownership.nature: Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Persons are the beneficial owners of any securities reported herein

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May 16, 2011 Filed May 18, 2011 20:54 UTC Kosmos Energy Ltd. KOS · Entity 4605 OtherSeries A Convertible Preferred Units · Derivative 38,286 $0.00 $0.00
Disclosure

SEC source: 0001181431-11-030791 · rrd312258.xml · derivative · entry 22

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 0

Underlying: Common Shares · 208,082 shares

Expires not disclosed

F1 · derivative.exercise_price: The common shares, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") were issued in exchange for the outstanding units in Kosmos Energy Holdings ("KEH") listed in Table II pursuant to a corporate reorganization (the "Corporate Reorganization") in connection with the initial public offering of Common Shares, which units were exchangeable pursuant to the Fourth Amended and Restated Operating Agreement of KEH upon the closing of the initial public offering of the Issuer based on the pre-offering equity value of such units.

F1 · kind: The common shares, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") were issued in exchange for the outstanding units in Kosmos Energy Holdings ("KEH") listed in Table II pursuant to a corporate reorganization (the "Corporate Reorganization") in connection with the initial public offering of Common Shares, which units were exchangeable pursuant to the Fourth Amended and Restated Operating Agreement of KEH upon the closing of the initial public offering of the Issuer based on the pre-offering equity value of such units.

F1 · derivative.exercise_date: The common shares, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") were issued in exchange for the outstanding units in Kosmos Energy Holdings ("KEH") listed in Table II pursuant to a corporate reorganization (the "Corporate Reorganization") in connection with the initial public offering of Common Shares, which units were exchangeable pursuant to the Fourth Amended and Restated Operating Agreement of KEH upon the closing of the initial public offering of the Issuer based on the pre-offering equity value of such units.

F1 · derivative.expiration_date: The common shares, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") were issued in exchange for the outstanding units in Kosmos Energy Holdings ("KEH") listed in Table II pursuant to a corporate reorganization (the "Corporate Reorganization") in connection with the initial public offering of Common Shares, which units were exchangeable pursuant to the Fourth Amended and Restated Operating Agreement of KEH upon the closing of the initial public offering of the Issuer based on the pre-offering equity value of such units.

F11 · ownership.nature: Reflects the number of units of KEH owned by BPP prior to their exchange on May 16, 2011 pursuant to the Corporate Reorganization.

F12 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C. which is controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is controlled by Mr. Stephen A. Schwarzman, its founder.

F13 · ownership.nature: Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Persons are the beneficial owners of any securities reported herein

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May 16, 2011 Filed May 18, 2011 20:54 UTC Kosmos Energy Ltd. KOS · Entity 4605 OtherC1 Units · Derivative 22,583 $0.00 $0.00
Disclosure

SEC source: 0001181431-11-030791 · rrd312258.xml · derivative · entry 21

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 0

Underlying: Common Shares · 83,413 shares

Expires not disclosed

F1 · derivative.exercise_price: The common shares, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") were issued in exchange for the outstanding units in Kosmos Energy Holdings ("KEH") listed in Table II pursuant to a corporate reorganization (the "Corporate Reorganization") in connection with the initial public offering of Common Shares, which units were exchangeable pursuant to the Fourth Amended and Restated Operating Agreement of KEH upon the closing of the initial public offering of the Issuer based on the pre-offering equity value of such units.

F1 · kind: The common shares, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") were issued in exchange for the outstanding units in Kosmos Energy Holdings ("KEH") listed in Table II pursuant to a corporate reorganization (the "Corporate Reorganization") in connection with the initial public offering of Common Shares, which units were exchangeable pursuant to the Fourth Amended and Restated Operating Agreement of KEH upon the closing of the initial public offering of the Issuer based on the pre-offering equity value of such units.

F1 · derivative.exercise_date: The common shares, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") were issued in exchange for the outstanding units in Kosmos Energy Holdings ("KEH") listed in Table II pursuant to a corporate reorganization (the "Corporate Reorganization") in connection with the initial public offering of Common Shares, which units were exchangeable pursuant to the Fourth Amended and Restated Operating Agreement of KEH upon the closing of the initial public offering of the Issuer based on the pre-offering equity value of such units.

F1 · derivative.expiration_date: The common shares, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") were issued in exchange for the outstanding units in Kosmos Energy Holdings ("KEH") listed in Table II pursuant to a corporate reorganization (the "Corporate Reorganization") in connection with the initial public offering of Common Shares, which units were exchangeable pursuant to the Fourth Amended and Restated Operating Agreement of KEH upon the closing of the initial public offering of the Issuer based on the pre-offering equity value of such units.

F10 · ownership.nature: Reflects the number of units of KEH owned by BFIP SMD prior to their exchange on May 16, 2011 pursuant to the Corporate Reorganization.

F12 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C. which is controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is controlled by Mr. Stephen A. Schwarzman, its founder.

F13 · ownership.nature: Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Persons are the beneficial owners of any securities reported herein

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May 16, 2011 Filed May 18, 2011 20:54 UTC Kosmos Energy Ltd. KOS · Entity 4605 OtherSeries C Convertible Preferred Units · Derivative 7,994 $0.00 $0.00
Disclosure

SEC source: 0001181431-11-030791 · rrd312258.xml · derivative · entry 20

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 0

Underlying: Common Shares · 43,466 shares

Expires not disclosed

F1 · derivative.exercise_price: The common shares, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") were issued in exchange for the outstanding units in Kosmos Energy Holdings ("KEH") listed in Table II pursuant to a corporate reorganization (the "Corporate Reorganization") in connection with the initial public offering of Common Shares, which units were exchangeable pursuant to the Fourth Amended and Restated Operating Agreement of KEH upon the closing of the initial public offering of the Issuer based on the pre-offering equity value of such units.

F1 · kind: The common shares, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") were issued in exchange for the outstanding units in Kosmos Energy Holdings ("KEH") listed in Table II pursuant to a corporate reorganization (the "Corporate Reorganization") in connection with the initial public offering of Common Shares, which units were exchangeable pursuant to the Fourth Amended and Restated Operating Agreement of KEH upon the closing of the initial public offering of the Issuer based on the pre-offering equity value of such units.

F1 · derivative.exercise_date: The common shares, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") were issued in exchange for the outstanding units in Kosmos Energy Holdings ("KEH") listed in Table II pursuant to a corporate reorganization (the "Corporate Reorganization") in connection with the initial public offering of Common Shares, which units were exchangeable pursuant to the Fourth Amended and Restated Operating Agreement of KEH upon the closing of the initial public offering of the Issuer based on the pre-offering equity value of such units.

F1 · derivative.expiration_date: The common shares, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") were issued in exchange for the outstanding units in Kosmos Energy Holdings ("KEH") listed in Table II pursuant to a corporate reorganization (the "Corporate Reorganization") in connection with the initial public offering of Common Shares, which units were exchangeable pursuant to the Fourth Amended and Restated Operating Agreement of KEH upon the closing of the initial public offering of the Issuer based on the pre-offering equity value of such units.

F10 · ownership.nature: Reflects the number of units of KEH owned by BFIP SMD prior to their exchange on May 16, 2011 pursuant to the Corporate Reorganization.

F12 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C. which is controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is controlled by Mr. Stephen A. Schwarzman, its founder.

F13 · ownership.nature: Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Persons are the beneficial owners of any securities reported herein

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May 16, 2011 Filed May 18, 2011 20:54 UTC Kosmos Energy Ltd. KOS · Entity 4605 OtherSeries B Convertible Preferred Units · Derivative 169,682 $0.00 $0.00
Disclosure

SEC source: 0001181431-11-030791 · rrd312258.xml · derivative · entry 19

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 0

Underlying: Common Shares · 931,875 shares

Expires not disclosed

F1 · derivative.exercise_price: The common shares, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") were issued in exchange for the outstanding units in Kosmos Energy Holdings ("KEH") listed in Table II pursuant to a corporate reorganization (the "Corporate Reorganization") in connection with the initial public offering of Common Shares, which units were exchangeable pursuant to the Fourth Amended and Restated Operating Agreement of KEH upon the closing of the initial public offering of the Issuer based on the pre-offering equity value of such units.

F1 · kind: The common shares, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") were issued in exchange for the outstanding units in Kosmos Energy Holdings ("KEH") listed in Table II pursuant to a corporate reorganization (the "Corporate Reorganization") in connection with the initial public offering of Common Shares, which units were exchangeable pursuant to the Fourth Amended and Restated Operating Agreement of KEH upon the closing of the initial public offering of the Issuer based on the pre-offering equity value of such units.

F1 · derivative.exercise_date: The common shares, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") were issued in exchange for the outstanding units in Kosmos Energy Holdings ("KEH") listed in Table II pursuant to a corporate reorganization (the "Corporate Reorganization") in connection with the initial public offering of Common Shares, which units were exchangeable pursuant to the Fourth Amended and Restated Operating Agreement of KEH upon the closing of the initial public offering of the Issuer based on the pre-offering equity value of such units.

F1 · derivative.expiration_date: The common shares, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") were issued in exchange for the outstanding units in Kosmos Energy Holdings ("KEH") listed in Table II pursuant to a corporate reorganization (the "Corporate Reorganization") in connection with the initial public offering of Common Shares, which units were exchangeable pursuant to the Fourth Amended and Restated Operating Agreement of KEH upon the closing of the initial public offering of the Issuer based on the pre-offering equity value of such units.

F10 · ownership.nature: Reflects the number of units of KEH owned by BFIP SMD prior to their exchange on May 16, 2011 pursuant to the Corporate Reorganization.

F12 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C. which is controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is controlled by Mr. Stephen A. Schwarzman, its founder.

F13 · ownership.nature: Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Persons are the beneficial owners of any securities reported herein

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May 16, 2011 Filed May 18, 2011 20:54 UTC Kosmos Energy Ltd. KOS · Entity 4605 OtherSeries A Convertible Preferred Units · Derivative 281,970 $0.00 $0.00
Disclosure

SEC source: 0001181431-11-030791 · rrd312258.xml · derivative · entry 18

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 0

Underlying: Common Shares · 1,532,489 shares

Expires not disclosed

F1 · derivative.exercise_price: The common shares, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") were issued in exchange for the outstanding units in Kosmos Energy Holdings ("KEH") listed in Table II pursuant to a corporate reorganization (the "Corporate Reorganization") in connection with the initial public offering of Common Shares, which units were exchangeable pursuant to the Fourth Amended and Restated Operating Agreement of KEH upon the closing of the initial public offering of the Issuer based on the pre-offering equity value of such units.

F1 · kind: The common shares, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") were issued in exchange for the outstanding units in Kosmos Energy Holdings ("KEH") listed in Table II pursuant to a corporate reorganization (the "Corporate Reorganization") in connection with the initial public offering of Common Shares, which units were exchangeable pursuant to the Fourth Amended and Restated Operating Agreement of KEH upon the closing of the initial public offering of the Issuer based on the pre-offering equity value of such units.

F1 · derivative.exercise_date: The common shares, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") were issued in exchange for the outstanding units in Kosmos Energy Holdings ("KEH") listed in Table II pursuant to a corporate reorganization (the "Corporate Reorganization") in connection with the initial public offering of Common Shares, which units were exchangeable pursuant to the Fourth Amended and Restated Operating Agreement of KEH upon the closing of the initial public offering of the Issuer based on the pre-offering equity value of such units.

F1 · derivative.expiration_date: The common shares, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") were issued in exchange for the outstanding units in Kosmos Energy Holdings ("KEH") listed in Table II pursuant to a corporate reorganization (the "Corporate Reorganization") in connection with the initial public offering of Common Shares, which units were exchangeable pursuant to the Fourth Amended and Restated Operating Agreement of KEH upon the closing of the initial public offering of the Issuer based on the pre-offering equity value of such units.

F10 · ownership.nature: Reflects the number of units of KEH owned by BFIP SMD prior to their exchange on May 16, 2011 pursuant to the Corporate Reorganization.

F12 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C. which is controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is controlled by Mr. Stephen A. Schwarzman, its founder.

F13 · ownership.nature: Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Persons are the beneficial owners of any securities reported herein

Read SEC document
May 16, 2011 Filed May 18, 2011 20:54 UTC Kosmos Energy Ltd. KOS · Entity 4605 OtherC1 Units · Derivative 27,198 $0.00 $0.00
Disclosure

SEC source: 0001181431-11-030791 · rrd312258.xml · derivative · entry 17

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 0

Underlying: Common Shares · 100,460 shares

Expires not disclosed

F1 · derivative.exercise_price: The common shares, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") were issued in exchange for the outstanding units in Kosmos Energy Holdings ("KEH") listed in Table II pursuant to a corporate reorganization (the "Corporate Reorganization") in connection with the initial public offering of Common Shares, which units were exchangeable pursuant to the Fourth Amended and Restated Operating Agreement of KEH upon the closing of the initial public offering of the Issuer based on the pre-offering equity value of such units.

F1 · kind: The common shares, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") were issued in exchange for the outstanding units in Kosmos Energy Holdings ("KEH") listed in Table II pursuant to a corporate reorganization (the "Corporate Reorganization") in connection with the initial public offering of Common Shares, which units were exchangeable pursuant to the Fourth Amended and Restated Operating Agreement of KEH upon the closing of the initial public offering of the Issuer based on the pre-offering equity value of such units.

F1 · derivative.exercise_date: The common shares, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") were issued in exchange for the outstanding units in Kosmos Energy Holdings ("KEH") listed in Table II pursuant to a corporate reorganization (the "Corporate Reorganization") in connection with the initial public offering of Common Shares, which units were exchangeable pursuant to the Fourth Amended and Restated Operating Agreement of KEH upon the closing of the initial public offering of the Issuer based on the pre-offering equity value of such units.

F1 · derivative.expiration_date: The common shares, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") were issued in exchange for the outstanding units in Kosmos Energy Holdings ("KEH") listed in Table II pursuant to a corporate reorganization (the "Corporate Reorganization") in connection with the initial public offering of Common Shares, which units were exchangeable pursuant to the Fourth Amended and Restated Operating Agreement of KEH upon the closing of the initial public offering of the Issuer based on the pre-offering equity value of such units.

F9 · ownership.nature: Reflects the number of units of KEH owned by BFIP prior to their exchange on May 16, 2011 pursuant to the Corporate Reorganization.

F12 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C. which is controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is controlled by Mr. Stephen A. Schwarzman, its founder.

F13 · ownership.nature: Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Persons are the beneficial owners of any securities reported herein

Read SEC document
May 16, 2011 Filed May 18, 2011 20:54 UTC Kosmos Energy Ltd. KOS · Entity 4605 OtherSeries C Convertible Preferred Units · Derivative 9,628 $0.00 $0.00
Disclosure

SEC source: 0001181431-11-030791 · rrd312258.xml · derivative · entry 16

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

BLACKSTONE MANAGEMENT ASSOCIATES CAYMAN IV LP · CIK 0001273623 · 10% owner

BLACKSTONE FAMILY GP LLC · CIK 0001404964 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 0

Underlying: Common Shares · 52,350 shares

Expires not disclosed

F1 · derivative.exercise_price: The common shares, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") were issued in exchange for the outstanding units in Kosmos Energy Holdings ("KEH") listed in Table II pursuant to a corporate reorganization (the "Corporate Reorganization") in connection with the initial public offering of Common Shares, which units were exchangeable pursuant to the Fourth Amended and Restated Operating Agreement of KEH upon the closing of the initial public offering of the Issuer based on the pre-offering equity value of such units.

F1 · kind: The common shares, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") were issued in exchange for the outstanding units in Kosmos Energy Holdings ("KEH") listed in Table II pursuant to a corporate reorganization (the "Corporate Reorganization") in connection with the initial public offering of Common Shares, which units were exchangeable pursuant to the Fourth Amended and Restated Operating Agreement of KEH upon the closing of the initial public offering of the Issuer based on the pre-offering equity value of such units.

F1 · derivative.exercise_date: The common shares, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") were issued in exchange for the outstanding units in Kosmos Energy Holdings ("KEH") listed in Table II pursuant to a corporate reorganization (the "Corporate Reorganization") in connection with the initial public offering of Common Shares, which units were exchangeable pursuant to the Fourth Amended and Restated Operating Agreement of KEH upon the closing of the initial public offering of the Issuer based on the pre-offering equity value of such units.

F1 · derivative.expiration_date: The common shares, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") were issued in exchange for the outstanding units in Kosmos Energy Holdings ("KEH") listed in Table II pursuant to a corporate reorganization (the "Corporate Reorganization") in connection with the initial public offering of Common Shares, which units were exchangeable pursuant to the Fourth Amended and Restated Operating Agreement of KEH upon the closing of the initial public offering of the Issuer based on the pre-offering equity value of such units.

F9 · ownership.nature: Reflects the number of units of KEH owned by BFIP prior to their exchange on May 16, 2011 pursuant to the Corporate Reorganization.

F12 · ownership.nature: The general partner of BFIP SMD is Blackstone Family GP L.L.C. which is controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is controlled by Mr. Stephen A. Schwarzman, its founder.

F13 · ownership.nature: Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Persons are the beneficial owners of any securities reported herein

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Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.