KIA VIII (Rubicon) GP, L.P.

SEC source: 0001209191-18-008738 · doc4.xml · derivative · entry 2

Kelso GP VIII, LLC · CIK 0001421180 · 10% owner

KIA VIII (Rubicon) GP, L.P. · CIK 0001641150 · 10% owner

KIA VIII (Rubicon), L.P. · CIK 0001641148 · 10% owner

KEP VI AIV (Rubicon), LLC · CIK 0001641210 · 10% owner

NICKELL FRANK T · CIK 0001034431 · 10% owner

WALL THOMAS R IV · CIK 0001034433 · 10% owner

MATELICH GEORGE E · CIK 0001034432 · 10% owner

GOLDBERG MICHAEL B · CIK 0001034434 · 10% owner

WAHRHAFTIG DAVID I · CIK 0001055858 · 10% owner

BYNUM FRANK K · CIK 0001034435 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By partnership

Disclosed balance after: 46,727,603

Underlying: Class A shares · 11,646,401 shares

Expires not disclosed

F1 · derivative.exercise_price: Pursuant to the First Amended and Restated Agreement of Limited Partnership of the Issuer dated May 12, 2015 (the "Partnership Agreement"), KIA VIII (Rubicon), L.P. ("KIA VIII") and KEP VI AIV (Rubicon), LLC ("KEP VI AIV") each have the right, at any time following the expiration of a lock-up period and from time to time, to immediately exchange (the "Exchange Right") Class B shares of the Issuer (the "Class B shares") and a corresponding number of Units of limited liability company interest in Tallgrass Equity, LLC ("Tallgrass Equity", and such Units, the "Units", and each Class B share and Unit so exchanged, together, an "Exchange Unit") for a like number of Class A shares of the Issuer (the "Class A shares"), not to exceed, in the aggregate, the total number of Exchange Units held by KIA VIII or KEP VI AIV, as applicable. As a result, the Reporting Persons may be deemed to beneficially own the Class A shares receivable upon election of the Exchange Right.

F1 · kind: Pursuant to the First Amended and Restated Agreement of Limited Partnership of the Issuer dated May 12, 2015 (the "Partnership Agreement"), KIA VIII (Rubicon), L.P. ("KIA VIII") and KEP VI AIV (Rubicon), LLC ("KEP VI AIV") each have the right, at any time following the expiration of a lock-up period and from time to time, to immediately exchange (the "Exchange Right") Class B shares of the Issuer (the "Class B shares") and a corresponding number of Units of limited liability company interest in Tallgrass Equity, LLC ("Tallgrass Equity", and such Units, the "Units", and each Class B share and Unit so exchanged, together, an "Exchange Unit") for a like number of Class A shares of the Issuer (the "Class A shares"), not to exceed, in the aggregate, the total number of Exchange Units held by KIA VIII or KEP VI AIV, as applicable. As a result, the Reporting Persons may be deemed to beneficially own the Class A shares receivable upon election of the Exchange Right.

F2 · kind: On February 7, 2018, the Issuer, Tallgrass Development, LP, a Delaware limited partnership ("Development"), Tallgrass Equity, Tallgrass Development Holdings, LLC, a Delaware limited liability company and wholly owned subsidiary of TE ("Merger Sub"), and, for certain limited purposes, Tallgrass Energy Holdings, LLC, a Delaware limited liability company ("Holdings") entered into a definitive Agreement and Plan of Merger (the "Merger Agreement"), pursuant to which Development merged with and into Merger Sub, with Merger Sub remaining as the surviving company (the "Merger"), in exchange for (i) 27,554,785 Units, and (ii) 27,554,785 Class B Shares (such Units and Class B Shares, together, the "Merger Consideration").

F3 · kind: The Merger Consideration was paid to the limited partners of Development upon the closing of the Merger. Pursuant to the terms of the Merger Agreement, Merger Consideration of 9,919,280 Units and Class B Shares were issued to KIA VIII and 1,727,121 Units and Class B Shares were issued to KEP VI AIV, in their respective capacities as limited partners of Development.

F9 · kind: The Units, collectively with the Class B shares, constitute the derivative securities described herein.

F9 · shares: The Units, collectively with the Class B shares, constitute the derivative securities described herein.

F2 · price: On February 7, 2018, the Issuer, Tallgrass Development, LP, a Delaware limited partnership ("Development"), Tallgrass Equity, Tallgrass Development Holdings, LLC, a Delaware limited liability company and wholly owned subsidiary of TE ("Merger Sub"), and, for certain limited purposes, Tallgrass Energy Holdings, LLC, a Delaware limited liability company ("Holdings") entered into a definitive Agreement and Plan of Merger (the "Merger Agreement"), pursuant to which Development merged with and into Merger Sub, with Merger Sub remaining as the surviving company (the "Merger"), in exchange for (i) 27,554,785 Units, and (ii) 27,554,785 Class B Shares (such Units and Class B Shares, together, the "Merger Consideration").

F3 · price: The Merger Consideration was paid to the limited partners of Development upon the closing of the Merger. Pursuant to the terms of the Merger Agreement, Merger Consideration of 9,919,280 Units and Class B Shares were issued to KIA VIII and 1,727,121 Units and Class B Shares were issued to KEP VI AIV, in their respective capacities as limited partners of Development.

F1 · derivative.exercise_date: Pursuant to the First Amended and Restated Agreement of Limited Partnership of the Issuer dated May 12, 2015 (the "Partnership Agreement"), KIA VIII (Rubicon), L.P. ("KIA VIII") and KEP VI AIV (Rubicon), LLC ("KEP VI AIV") each have the right, at any time following the expiration of a lock-up period and from time to time, to immediately exchange (the "Exchange Right") Class B shares of the Issuer (the "Class B shares") and a corresponding number of Units of limited liability company interest in Tallgrass Equity, LLC ("Tallgrass Equity", and such Units, the "Units", and each Class B share and Unit so exchanged, together, an "Exchange Unit") for a like number of Class A shares of the Issuer (the "Class A shares"), not to exceed, in the aggregate, the total number of Exchange Units held by KIA VIII or KEP VI AIV, as applicable. As a result, the Reporting Persons may be deemed to beneficially own the Class A shares receivable upon election of the Exchange Right.

F1 · derivative.expiration_date: Pursuant to the First Amended and Restated Agreement of Limited Partnership of the Issuer dated May 12, 2015 (the "Partnership Agreement"), KIA VIII (Rubicon), L.P. ("KIA VIII") and KEP VI AIV (Rubicon), LLC ("KEP VI AIV") each have the right, at any time following the expiration of a lock-up period and from time to time, to immediately exchange (the "Exchange Right") Class B shares of the Issuer (the "Class B shares") and a corresponding number of Units of limited liability company interest in Tallgrass Equity, LLC ("Tallgrass Equity", and such Units, the "Units", and each Class B share and Unit so exchanged, together, an "Exchange Unit") for a like number of Class A shares of the Issuer (the "Class A shares"), not to exceed, in the aggregate, the total number of Exchange Units held by KIA VIII or KEP VI AIV, as applicable. As a result, the Reporting Persons may be deemed to beneficially own the Class A shares receivable upon election of the Exchange Right.

F5 · ownership.direct: Kelso GP VIII, LLC ("GP VIII, LLC") is the general partner of KIA VIII (Rubicon) GP, L.P. ("GP VIII, L.P." and, together with GP VIII, LLC, the "Kelso GPs"). GP VIII, L.P. is the general partner of KIA VIII. GP VIII, LLC and GP VIII, L.P. could be deemed to share beneficial ownership of securities owned of record or deemed to be beneficially owned by KIA VIII. GP VIII, LLC and GP VIII, L.P. each disclaim beneficial ownership of all of the securities reported herein except to the extent of its respective pecuniary interest, if any, therein, and the inclusion of these securities in this report shall not be deemed to be an admission of beneficial ownership of all of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purposes.

F6 · ownership.direct: KIA VIII and KEP VI AIV, due to their common control, could be deemed to beneficially own each of the other's securities. KIA VIII and KEP VI AIV each disclaim beneficial ownership of all of the securities deemed to be beneficially owned by the other and the inclusion of these securities in this report shall not be deemed to be an admission of beneficial ownership of all of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purposes.

F7 · ownership.direct: The Kelso GPs and KEP VI AIV, due to their common control, could be deemed to beneficially own each of the other's securities. The Kelso GPs and KEP VI AIV each disclaim beneficial ownership of all of the securities owned of record or deemed to be beneficially owned by the other or owned of record by KIA VIII and the inclusion of these securities in this report shall not be deemed to be an admission of beneficial ownership of all of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purposes.

F8 · ownership.direct: Frank T. Nickell, Thomas R. Wall, IV, George E. Matelich, Michael B. Goldberg, David I. Wahrhaftig, Frank K. Bynum, Jr., Philip E. Berney, Frank J. Loverro, James J. Connors, II, Church M. Moore, Stanley de J. Osborne, Christopher L. Collins, A. Lynn Alexander, Howard A. Matlin, John K. Kim, Henry Mannix, III, Mathew S. Edgerton, and Stephen C. Dutton (the "Kelso Individuals") could be deemed to share beneficial ownership of securities owned of record by KIA VIII and KEP VI AIV or deemed to be beneficially owned by GP VIII, LLC or GP VIII, L.P., by virtue of their status as managing members of KEP VI AIV and of GP VIII, LLC. The Kelso Individuals each disclaim beneficial ownership of such securities, and this report shall not be deemed to be an admission that any of the Kelso Individuals is the beneficial owner of these securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purposes.

F10 · ownership.direct: Consists of 39,798,058 Units owned of record by KIA VIII and 6,929,545 Units owned of record by KEP VI AIV following the transactions reported in this line of this Form 4.

SEC source: 0001209191-18-008738 · doc4.xml · nonDerivative · entry 1

Kelso GP VIII, LLC · CIK 0001421180 · 10% owner

KIA VIII (Rubicon) GP, L.P. · CIK 0001641150 · 10% owner

KIA VIII (Rubicon), L.P. · CIK 0001641148 · 10% owner

KEP VI AIV (Rubicon), LLC · CIK 0001641210 · 10% owner

NICKELL FRANK T · CIK 0001034431 · 10% owner

WALL THOMAS R IV · CIK 0001034433 · 10% owner

MATELICH GEORGE E · CIK 0001034432 · 10% owner

GOLDBERG MICHAEL B · CIK 0001034434 · 10% owner

WAHRHAFTIG DAVID I · CIK 0001055858 · 10% owner

BYNUM FRANK K · CIK 0001034435 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By partnership

Disclosed balance after: 46,727,603

F1 · kind: Pursuant to the First Amended and Restated Agreement of Limited Partnership of the Issuer dated May 12, 2015 (the "Partnership Agreement"), KIA VIII (Rubicon), L.P. ("KIA VIII") and KEP VI AIV (Rubicon), LLC ("KEP VI AIV") each have the right, at any time following the expiration of a lock-up period and from time to time, to immediately exchange (the "Exchange Right") Class B shares of the Issuer (the "Class B shares") and a corresponding number of Units of limited liability company interest in Tallgrass Equity, LLC ("Tallgrass Equity", and such Units, the "Units", and each Class B share and Unit so exchanged, together, an "Exchange Unit") for a like number of Class A shares of the Issuer (the "Class A shares"), not to exceed, in the aggregate, the total number of Exchange Units held by KIA VIII or KEP VI AIV, as applicable. As a result, the Reporting Persons may be deemed to beneficially own the Class A shares receivable upon election of the Exchange Right.

F2 · kind: On February 7, 2018, the Issuer, Tallgrass Development, LP, a Delaware limited partnership ("Development"), Tallgrass Equity, Tallgrass Development Holdings, LLC, a Delaware limited liability company and wholly owned subsidiary of TE ("Merger Sub"), and, for certain limited purposes, Tallgrass Energy Holdings, LLC, a Delaware limited liability company ("Holdings") entered into a definitive Agreement and Plan of Merger (the "Merger Agreement"), pursuant to which Development merged with and into Merger Sub, with Merger Sub remaining as the surviving company (the "Merger"), in exchange for (i) 27,554,785 Units, and (ii) 27,554,785 Class B Shares (such Units and Class B Shares, together, the "Merger Consideration").

F3 · kind: The Merger Consideration was paid to the limited partners of Development upon the closing of the Merger. Pursuant to the terms of the Merger Agreement, Merger Consideration of 9,919,280 Units and Class B Shares were issued to KIA VIII and 1,727,121 Units and Class B Shares were issued to KEP VI AIV, in their respective capacities as limited partners of Development.

F2 · price: On February 7, 2018, the Issuer, Tallgrass Development, LP, a Delaware limited partnership ("Development"), Tallgrass Equity, Tallgrass Development Holdings, LLC, a Delaware limited liability company and wholly owned subsidiary of TE ("Merger Sub"), and, for certain limited purposes, Tallgrass Energy Holdings, LLC, a Delaware limited liability company ("Holdings") entered into a definitive Agreement and Plan of Merger (the "Merger Agreement"), pursuant to which Development merged with and into Merger Sub, with Merger Sub remaining as the surviving company (the "Merger"), in exchange for (i) 27,554,785 Units, and (ii) 27,554,785 Class B Shares (such Units and Class B Shares, together, the "Merger Consideration").

F3 · price: The Merger Consideration was paid to the limited partners of Development upon the closing of the Merger. Pursuant to the terms of the Merger Agreement, Merger Consideration of 9,919,280 Units and Class B Shares were issued to KIA VIII and 1,727,121 Units and Class B Shares were issued to KEP VI AIV, in their respective capacities as limited partners of Development.

F4 · ownership.direct: Consists of 39,798,058 Class B shares owned of record by KIA VIII and 6,929,545 Class B shares owned of record by KEP VI AIV following the transactions reported in this line of this Form 4.

F5 · ownership.direct: Kelso GP VIII, LLC ("GP VIII, LLC") is the general partner of KIA VIII (Rubicon) GP, L.P. ("GP VIII, L.P." and, together with GP VIII, LLC, the "Kelso GPs"). GP VIII, L.P. is the general partner of KIA VIII. GP VIII, LLC and GP VIII, L.P. could be deemed to share beneficial ownership of securities owned of record or deemed to be beneficially owned by KIA VIII. GP VIII, LLC and GP VIII, L.P. each disclaim beneficial ownership of all of the securities reported herein except to the extent of its respective pecuniary interest, if any, therein, and the inclusion of these securities in this report shall not be deemed to be an admission of beneficial ownership of all of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purposes.

F6 · ownership.direct: KIA VIII and KEP VI AIV, due to their common control, could be deemed to beneficially own each of the other's securities. KIA VIII and KEP VI AIV each disclaim beneficial ownership of all of the securities deemed to be beneficially owned by the other and the inclusion of these securities in this report shall not be deemed to be an admission of beneficial ownership of all of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purposes.

F7 · ownership.direct: The Kelso GPs and KEP VI AIV, due to their common control, could be deemed to beneficially own each of the other's securities. The Kelso GPs and KEP VI AIV each disclaim beneficial ownership of all of the securities owned of record or deemed to be beneficially owned by the other or owned of record by KIA VIII and the inclusion of these securities in this report shall not be deemed to be an admission of beneficial ownership of all of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purposes.

F8 · ownership.direct: Frank T. Nickell, Thomas R. Wall, IV, George E. Matelich, Michael B. Goldberg, David I. Wahrhaftig, Frank K. Bynum, Jr., Philip E. Berney, Frank J. Loverro, James J. Connors, II, Church M. Moore, Stanley de J. Osborne, Christopher L. Collins, A. Lynn Alexander, Howard A. Matlin, John K. Kim, Henry Mannix, III, Mathew S. Edgerton, and Stephen C. Dutton (the "Kelso Individuals") could be deemed to share beneficial ownership of securities owned of record by KIA VIII and KEP VI AIV or deemed to be beneficially owned by GP VIII, LLC or GP VIII, L.P., by virtue of their status as managing members of KEP VI AIV and of GP VIII, LLC. The Kelso Individuals each disclaim beneficial ownership of such securities, and this report shall not be deemed to be an admission that any of the Kelso Individuals is the beneficial owner of these securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purposes.

SEC source: 0001209191-16-151927 · doc4.xml · derivative · entry 4

Kelso GP VIII, LLC · CIK 0001421180 · 10% owner

KIA VIII (Rubicon) GP, L.P. · CIK 0001641150 · 10% owner

KIA VIII (Rubicon), L.P. · CIK 0001641148 · 10% owner

KEP VI AIV (Rubicon), LLC · CIK 0001641210 · 10% owner

NICKELL FRANK T · CIK 0001034431 · 10% owner

WALL THOMAS R IV · CIK 0001034433 · 10% owner

MATELICH GEORGE E · CIK 0001034432 · 10% owner

GOLDBERG MICHAEL B · CIK 0001034434 · 10% owner

WAHRHAFTIG DAVID I · CIK 0001055858 · 10% owner

BYNUM FRANK K · CIK 0001034435 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By partnership

Disclosed balance after: 35,081,202

Underlying: Class A shares · 5,058,497 shares

Expires not disclosed

F1 · derivative.exercise_price: Pursuant to the First Amended and Restated Agreement of Limited Partnership of the Issuer dated May 12, 2015 (the "Partnership Agreement"), KIA VIII (Rubicon), L.P. ("KIA VIII") and KEP VI AIV (Rubicon), LLC ("KEP VI AIV") each have the right, at any time following the expiration of a lock-up period and from time to time, to immediately exchange (the "Exchange Right") Class B shares of the Issuer (the "Class B shares") and a corresponding number of Units of limited liability company interest in Tallgrass Equity, LLC ("Tallgrass Equity", and such Units, the "Units", and each Class B share and Unit so exchanged, together, an "Exchange Unit") for a like number of Class A shares of the Issuer (the "Class A shares"), not to exceed, in the aggregate, the total number of Exchange Units held by KIA VIII or KEP VI AIV, as applicable. As a result, the Reporting Persons may be deemed to beneficially own the Class A shares receivable upon election of the Exchange Right.

F1 · kind: Pursuant to the First Amended and Restated Agreement of Limited Partnership of the Issuer dated May 12, 2015 (the "Partnership Agreement"), KIA VIII (Rubicon), L.P. ("KIA VIII") and KEP VI AIV (Rubicon), LLC ("KEP VI AIV") each have the right, at any time following the expiration of a lock-up period and from time to time, to immediately exchange (the "Exchange Right") Class B shares of the Issuer (the "Class B shares") and a corresponding number of Units of limited liability company interest in Tallgrass Equity, LLC ("Tallgrass Equity", and such Units, the "Units", and each Class B share and Unit so exchanged, together, an "Exchange Unit") for a like number of Class A shares of the Issuer (the "Class A shares"), not to exceed, in the aggregate, the total number of Exchange Units held by KIA VIII or KEP VI AIV, as applicable. As a result, the Reporting Persons may be deemed to beneficially own the Class A shares receivable upon election of the Exchange Right.

F2 · kind: Pursuant to an underwriting agreement entered into on November 17, 2016 by the underwriter and the selling shareholders (including KIA VIII and KEP VI AIV), in connection with the secondary offering of the Issuer, the underwriter has the option (the "Option") to purchase 1,350,000 additional Class A shares from the selling shareholders in the secondary offering of the Issuer.

F3 · kind: On November 22, 2016, in connection with and immediately prior to the closing of the secondary offering of the Issuer on November 22, 2016, and the underwriter and the selling shareholders closing on the Option, KIA VIII and KEP VI AIV exercised their Exchange Right with respect to some of their Exchange Units, including KIA VIII and KEP VI AIV's respective pro rata shares of the Option based on KIA VIII and KEP VI AIV's respective ownership percentages of the outstanding Exchange Units, whereby the Issuer exchanged 4,308,339 Exchange Units held by KIA VIII and 750,158 Exchange Units held by KEP VI AIV on a one-for-one basis for a total of 5,058,497 Class A shares.

F10 · kind: The Units, collectively with the Class B shares, constitute the derivative securities described herein.

F10 · shares: The Units, collectively with the Class B shares, constitute the derivative securities described herein.

F9 · price: Represents the gross proceeds per Class A share sold in the secondary offering of the Issuer less the underwriting discount.

F1 · derivative.exercise_date: Pursuant to the First Amended and Restated Agreement of Limited Partnership of the Issuer dated May 12, 2015 (the "Partnership Agreement"), KIA VIII (Rubicon), L.P. ("KIA VIII") and KEP VI AIV (Rubicon), LLC ("KEP VI AIV") each have the right, at any time following the expiration of a lock-up period and from time to time, to immediately exchange (the "Exchange Right") Class B shares of the Issuer (the "Class B shares") and a corresponding number of Units of limited liability company interest in Tallgrass Equity, LLC ("Tallgrass Equity", and such Units, the "Units", and each Class B share and Unit so exchanged, together, an "Exchange Unit") for a like number of Class A shares of the Issuer (the "Class A shares"), not to exceed, in the aggregate, the total number of Exchange Units held by KIA VIII or KEP VI AIV, as applicable. As a result, the Reporting Persons may be deemed to beneficially own the Class A shares receivable upon election of the Exchange Right.

F3 · derivative.exercise_date: On November 22, 2016, in connection with and immediately prior to the closing of the secondary offering of the Issuer on November 22, 2016, and the underwriter and the selling shareholders closing on the Option, KIA VIII and KEP VI AIV exercised their Exchange Right with respect to some of their Exchange Units, including KIA VIII and KEP VI AIV's respective pro rata shares of the Option based on KIA VIII and KEP VI AIV's respective ownership percentages of the outstanding Exchange Units, whereby the Issuer exchanged 4,308,339 Exchange Units held by KIA VIII and 750,158 Exchange Units held by KEP VI AIV on a one-for-one basis for a total of 5,058,497 Class A shares.

F1 · derivative.expiration_date: Pursuant to the First Amended and Restated Agreement of Limited Partnership of the Issuer dated May 12, 2015 (the "Partnership Agreement"), KIA VIII (Rubicon), L.P. ("KIA VIII") and KEP VI AIV (Rubicon), LLC ("KEP VI AIV") each have the right, at any time following the expiration of a lock-up period and from time to time, to immediately exchange (the "Exchange Right") Class B shares of the Issuer (the "Class B shares") and a corresponding number of Units of limited liability company interest in Tallgrass Equity, LLC ("Tallgrass Equity", and such Units, the "Units", and each Class B share and Unit so exchanged, together, an "Exchange Unit") for a like number of Class A shares of the Issuer (the "Class A shares"), not to exceed, in the aggregate, the total number of Exchange Units held by KIA VIII or KEP VI AIV, as applicable. As a result, the Reporting Persons may be deemed to beneficially own the Class A shares receivable upon election of the Exchange Right.

F3 · derivative.expiration_date: On November 22, 2016, in connection with and immediately prior to the closing of the secondary offering of the Issuer on November 22, 2016, and the underwriter and the selling shareholders closing on the Option, KIA VIII and KEP VI AIV exercised their Exchange Right with respect to some of their Exchange Units, including KIA VIII and KEP VI AIV's respective pro rata shares of the Option based on KIA VIII and KEP VI AIV's respective ownership percentages of the outstanding Exchange Units, whereby the Issuer exchanged 4,308,339 Exchange Units held by KIA VIII and 750,158 Exchange Units held by KEP VI AIV on a one-for-one basis for a total of 5,058,497 Class A shares.

F5 · ownership.direct: Kelso GP VIII, LLC ("GP VIII, LLC") is the general partner of KIA VIII (Rubicon) GP, L.P. ("GP VIII, L.P." and, together with GP VIII, LLC, the "Kelso GPs"). GP VIII, L.P. is the general partner of KIA VIII. GP VIII, LLC and GP VIII, L.P. could be deemed to share beneficial ownership of securities owned of record or deemed to be beneficially owned by KIA VIII. GP VIII, LLC and GP VIII, L.P. each disclaim beneficial ownership of all of the securities reported herein except to the extent of its respective pecuniary interest, if any, therein, and the inclusion of these securities in this report shall not be deemed to be an admission of beneficial ownership of all of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purposes.

F6 · ownership.direct: KIA VIII and KEP VI AIV, due to their common control, could be deemed to beneficially own each of the other's securities. KIA VIII and KEP VI AIV each disclaim beneficial ownership of all of the securities deemed to be beneficially owned by the other and the inclusion of these securities in this report shall not be deemed to be an admission of beneficial ownership of all of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purposes.

F7 · ownership.direct: The Kelso GPs and KEP VI AIV, due to their common control, could be deemed to beneficially own each of the other's securities. The Kelso GPs and KEP VI AIV each disclaim beneficial ownership of all of the securities owned of record or deemed to be beneficially owned by the other or owned of record by KIA VIII and the inclusion of these securities in this report shall not be deemed to be an admission of beneficial ownership of all of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purposes.

F8 · ownership.direct: Frank T. Nickell, Thomas R. Wall, IV, George E. Matelich, Michael B. Goldberg, David I. Wahrhaftig, Frank K. Bynum, Jr., Philip E. Berney, Frank J. Loverro, James J. Connors, II, Church M. Moore, Stanley de J. Osborne, Christopher L. Collins, A. Lynn Alexander, Howard A. Matlin, John K. Kim, Henry Mannix, III, Mathew S. Edgerton, and Stephen C. Dutton (the "Kelso Individuals") could be deemed to share beneficial ownership of securities owned of record by KIA VIII and KEP VI AIV or deemed to be beneficially owned by GP VIII, LLC or GP VIII, L.P., by virtue of their status as managing members of KEP VI AIV and of GP VIII, LLC. The Kelso Individuals each disclaim beneficial ownership of such securities, and this report shall not be deemed to be an admission that any of the Kelso Individuals is the beneficial owner of these securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purposes.

F11 · ownership.direct: Consists of 29,878,778 Units owned of record by KIA VIII and 5,202,424 Units owned of record by KEP VI AIV following the transactions reported in this line of this Form 4.

SEC source: 0001209191-16-151927 · doc4.xml · nonDerivative · entry 3

Kelso GP VIII, LLC · CIK 0001421180 · 10% owner

KIA VIII (Rubicon) GP, L.P. · CIK 0001641150 · 10% owner

KIA VIII (Rubicon), L.P. · CIK 0001641148 · 10% owner

KEP VI AIV (Rubicon), LLC · CIK 0001641210 · 10% owner

NICKELL FRANK T · CIK 0001034431 · 10% owner

WALL THOMAS R IV · CIK 0001034433 · 10% owner

MATELICH GEORGE E · CIK 0001034432 · 10% owner

GOLDBERG MICHAEL B · CIK 0001034434 · 10% owner

WAHRHAFTIG DAVID I · CIK 0001055858 · 10% owner

BYNUM FRANK K · CIK 0001034435 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By partnership

Disclosed balance after: 0

F9 · price: Represents the gross proceeds per Class A share sold in the secondary offering of the Issuer less the underwriting discount.

SEC source: 0001209191-16-151927 · doc4.xml · nonDerivative · entry 2

Kelso GP VIII, LLC · CIK 0001421180 · 10% owner

KIA VIII (Rubicon) GP, L.P. · CIK 0001641150 · 10% owner

KIA VIII (Rubicon), L.P. · CIK 0001641148 · 10% owner

KEP VI AIV (Rubicon), LLC · CIK 0001641210 · 10% owner

NICKELL FRANK T · CIK 0001034431 · 10% owner

WALL THOMAS R IV · CIK 0001034433 · 10% owner

MATELICH GEORGE E · CIK 0001034432 · 10% owner

GOLDBERG MICHAEL B · CIK 0001034434 · 10% owner

WAHRHAFTIG DAVID I · CIK 0001055858 · 10% owner

BYNUM FRANK K · CIK 0001034435 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By partnership

Disclosed balance after: 5,058,497

F1 · kind: Pursuant to the First Amended and Restated Agreement of Limited Partnership of the Issuer dated May 12, 2015 (the "Partnership Agreement"), KIA VIII (Rubicon), L.P. ("KIA VIII") and KEP VI AIV (Rubicon), LLC ("KEP VI AIV") each have the right, at any time following the expiration of a lock-up period and from time to time, to immediately exchange (the "Exchange Right") Class B shares of the Issuer (the "Class B shares") and a corresponding number of Units of limited liability company interest in Tallgrass Equity, LLC ("Tallgrass Equity", and such Units, the "Units", and each Class B share and Unit so exchanged, together, an "Exchange Unit") for a like number of Class A shares of the Issuer (the "Class A shares"), not to exceed, in the aggregate, the total number of Exchange Units held by KIA VIII or KEP VI AIV, as applicable. As a result, the Reporting Persons may be deemed to beneficially own the Class A shares receivable upon election of the Exchange Right.

F2 · kind: Pursuant to an underwriting agreement entered into on November 17, 2016 by the underwriter and the selling shareholders (including KIA VIII and KEP VI AIV), in connection with the secondary offering of the Issuer, the underwriter has the option (the "Option") to purchase 1,350,000 additional Class A shares from the selling shareholders in the secondary offering of the Issuer.

F3 · kind: On November 22, 2016, in connection with and immediately prior to the closing of the secondary offering of the Issuer on November 22, 2016, and the underwriter and the selling shareholders closing on the Option, KIA VIII and KEP VI AIV exercised their Exchange Right with respect to some of their Exchange Units, including KIA VIII and KEP VI AIV's respective pro rata shares of the Option based on KIA VIII and KEP VI AIV's respective ownership percentages of the outstanding Exchange Units, whereby the Issuer exchanged 4,308,339 Exchange Units held by KIA VIII and 750,158 Exchange Units held by KEP VI AIV on a one-for-one basis for a total of 5,058,497 Class A shares.

F3 · price: On November 22, 2016, in connection with and immediately prior to the closing of the secondary offering of the Issuer on November 22, 2016, and the underwriter and the selling shareholders closing on the Option, KIA VIII and KEP VI AIV exercised their Exchange Right with respect to some of their Exchange Units, including KIA VIII and KEP VI AIV's respective pro rata shares of the Option based on KIA VIII and KEP VI AIV's respective ownership percentages of the outstanding Exchange Units, whereby the Issuer exchanged 4,308,339 Exchange Units held by KIA VIII and 750,158 Exchange Units held by KEP VI AIV on a one-for-one basis for a total of 5,058,497 Class A shares.

F5 · ownership.direct: Kelso GP VIII, LLC ("GP VIII, LLC") is the general partner of KIA VIII (Rubicon) GP, L.P. ("GP VIII, L.P." and, together with GP VIII, LLC, the "Kelso GPs"). GP VIII, L.P. is the general partner of KIA VIII. GP VIII, LLC and GP VIII, L.P. could be deemed to share beneficial ownership of securities owned of record or deemed to be beneficially owned by KIA VIII. GP VIII, LLC and GP VIII, L.P. each disclaim beneficial ownership of all of the securities reported herein except to the extent of its respective pecuniary interest, if any, therein, and the inclusion of these securities in this report shall not be deemed to be an admission of beneficial ownership of all of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purposes.

F6 · ownership.direct: KIA VIII and KEP VI AIV, due to their common control, could be deemed to beneficially own each of the other's securities. KIA VIII and KEP VI AIV each disclaim beneficial ownership of all of the securities deemed to be beneficially owned by the other and the inclusion of these securities in this report shall not be deemed to be an admission of beneficial ownership of all of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purposes.

F7 · ownership.direct: The Kelso GPs and KEP VI AIV, due to their common control, could be deemed to beneficially own each of the other's securities. The Kelso GPs and KEP VI AIV each disclaim beneficial ownership of all of the securities owned of record or deemed to be beneficially owned by the other or owned of record by KIA VIII and the inclusion of these securities in this report shall not be deemed to be an admission of beneficial ownership of all of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purposes.

F8 · ownership.direct: Frank T. Nickell, Thomas R. Wall, IV, George E. Matelich, Michael B. Goldberg, David I. Wahrhaftig, Frank K. Bynum, Jr., Philip E. Berney, Frank J. Loverro, James J. Connors, II, Church M. Moore, Stanley de J. Osborne, Christopher L. Collins, A. Lynn Alexander, Howard A. Matlin, John K. Kim, Henry Mannix, III, Mathew S. Edgerton, and Stephen C. Dutton (the "Kelso Individuals") could be deemed to share beneficial ownership of securities owned of record by KIA VIII and KEP VI AIV or deemed to be beneficially owned by GP VIII, LLC or GP VIII, L.P., by virtue of their status as managing members of KEP VI AIV and of GP VIII, LLC. The Kelso Individuals each disclaim beneficial ownership of such securities, and this report shall not be deemed to be an admission that any of the Kelso Individuals is the beneficial owner of these securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purposes.

SEC source: 0001209191-16-151927 · doc4.xml · nonDerivative · entry 1

Kelso GP VIII, LLC · CIK 0001421180 · 10% owner

KIA VIII (Rubicon) GP, L.P. · CIK 0001641150 · 10% owner

KIA VIII (Rubicon), L.P. · CIK 0001641148 · 10% owner

KEP VI AIV (Rubicon), LLC · CIK 0001641210 · 10% owner

NICKELL FRANK T · CIK 0001034431 · 10% owner

WALL THOMAS R IV · CIK 0001034433 · 10% owner

MATELICH GEORGE E · CIK 0001034432 · 10% owner

GOLDBERG MICHAEL B · CIK 0001034434 · 10% owner

WAHRHAFTIG DAVID I · CIK 0001055858 · 10% owner

BYNUM FRANK K · CIK 0001034435 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By partnership

Disclosed balance after: 35,081,202

F1 · kind: Pursuant to the First Amended and Restated Agreement of Limited Partnership of the Issuer dated May 12, 2015 (the "Partnership Agreement"), KIA VIII (Rubicon), L.P. ("KIA VIII") and KEP VI AIV (Rubicon), LLC ("KEP VI AIV") each have the right, at any time following the expiration of a lock-up period and from time to time, to immediately exchange (the "Exchange Right") Class B shares of the Issuer (the "Class B shares") and a corresponding number of Units of limited liability company interest in Tallgrass Equity, LLC ("Tallgrass Equity", and such Units, the "Units", and each Class B share and Unit so exchanged, together, an "Exchange Unit") for a like number of Class A shares of the Issuer (the "Class A shares"), not to exceed, in the aggregate, the total number of Exchange Units held by KIA VIII or KEP VI AIV, as applicable. As a result, the Reporting Persons may be deemed to beneficially own the Class A shares receivable upon election of the Exchange Right.

F2 · kind: Pursuant to an underwriting agreement entered into on November 17, 2016 by the underwriter and the selling shareholders (including KIA VIII and KEP VI AIV), in connection with the secondary offering of the Issuer, the underwriter has the option (the "Option") to purchase 1,350,000 additional Class A shares from the selling shareholders in the secondary offering of the Issuer.

F3 · kind: On November 22, 2016, in connection with and immediately prior to the closing of the secondary offering of the Issuer on November 22, 2016, and the underwriter and the selling shareholders closing on the Option, KIA VIII and KEP VI AIV exercised their Exchange Right with respect to some of their Exchange Units, including KIA VIII and KEP VI AIV's respective pro rata shares of the Option based on KIA VIII and KEP VI AIV's respective ownership percentages of the outstanding Exchange Units, whereby the Issuer exchanged 4,308,339 Exchange Units held by KIA VIII and 750,158 Exchange Units held by KEP VI AIV on a one-for-one basis for a total of 5,058,497 Class A shares.

F4 · ownership.direct: Consists of 29,878,778 Class B shares owned of record by KIA VIII and 5,202,424 Class B shares owned of record by KEP VI AIV following the transactions reported in this line of this Form 4.

F5 · ownership.direct: Kelso GP VIII, LLC ("GP VIII, LLC") is the general partner of KIA VIII (Rubicon) GP, L.P. ("GP VIII, L.P." and, together with GP VIII, LLC, the "Kelso GPs"). GP VIII, L.P. is the general partner of KIA VIII. GP VIII, LLC and GP VIII, L.P. could be deemed to share beneficial ownership of securities owned of record or deemed to be beneficially owned by KIA VIII. GP VIII, LLC and GP VIII, L.P. each disclaim beneficial ownership of all of the securities reported herein except to the extent of its respective pecuniary interest, if any, therein, and the inclusion of these securities in this report shall not be deemed to be an admission of beneficial ownership of all of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purposes.

F6 · ownership.direct: KIA VIII and KEP VI AIV, due to their common control, could be deemed to beneficially own each of the other's securities. KIA VIII and KEP VI AIV each disclaim beneficial ownership of all of the securities deemed to be beneficially owned by the other and the inclusion of these securities in this report shall not be deemed to be an admission of beneficial ownership of all of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purposes.

F7 · ownership.direct: The Kelso GPs and KEP VI AIV, due to their common control, could be deemed to beneficially own each of the other's securities. The Kelso GPs and KEP VI AIV each disclaim beneficial ownership of all of the securities owned of record or deemed to be beneficially owned by the other or owned of record by KIA VIII and the inclusion of these securities in this report shall not be deemed to be an admission of beneficial ownership of all of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purposes.

F8 · ownership.direct: Frank T. Nickell, Thomas R. Wall, IV, George E. Matelich, Michael B. Goldberg, David I. Wahrhaftig, Frank K. Bynum, Jr., Philip E. Berney, Frank J. Loverro, James J. Connors, II, Church M. Moore, Stanley de J. Osborne, Christopher L. Collins, A. Lynn Alexander, Howard A. Matlin, John K. Kim, Henry Mannix, III, Mathew S. Edgerton, and Stephen C. Dutton (the "Kelso Individuals") could be deemed to share beneficial ownership of securities owned of record by KIA VIII and KEP VI AIV or deemed to be beneficially owned by GP VIII, LLC or GP VIII, L.P., by virtue of their status as managing members of KEP VI AIV and of GP VIII, LLC. The Kelso Individuals each disclaim beneficial ownership of such securities, and this report shall not be deemed to be an admission that any of the Kelso Individuals is the beneficial owner of these securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purposes.