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If the form is filed by more than one reporting person, see Instruction 5(b)(v). |
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Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a). |
(1) |
The shares of Class B Common Stock are convertible into shares of Class A Common Stock of the Issuer on a one-for-one basis, subject to adjustment pursuant to certain anti-dilution rights, and have no expiration date. |
(2) |
NGP Switchback II, LLC is the record holder of the shares reported herein. Scott McNeill and Jim Mutrie are managers and co-chief executive officers of NGP Switchback II, LLC. Chris Carter, Philip J. Deutch, Scott Gieselman and Sam Stoutner are managers of NGP Switchback II, LLC. As such, Messrs. McNeill, Mutrie, Carter, Deutch, Gieselman and Stoutner may be deemed to have or share beneficial ownership of the common stock held directly by NGP Switchback II, LLC. |
(3) |
NGP XII US Holdings, L.P. indirectly owns a majority of the limited liability company interests of NGP Switchback II, LLC through its wholly-owned subsidiary, NGP ETP III Investments, LLC and NGP ETP III Investments, LLC's majority-owned subsidiary, NGP Energy Technology Partners III, LLC. NGP XII Holdings GP, L.L.C. is the sole general partner of NGP XII US Holdings, L.P., and NGP Natural Resources XII, L.P. is the sole member of NGP XII Holdings GP, L.L.C. G.F.W. Energy XII, L.P. is the sole general partner of NGP Natural Resources XII, L.P., and GFW XII, L.L.C. is the sole general partner of G.F.W. Energy XII, L.P. GFW XII, L.L.C. has delegated full power and authority to manage NGP XII US Holdings, L.P. to NGP Energy Capital Management, L.L.C. |
(4) |
Chris Carter, Craig Glick and Jill Lampert serve on the Executive Committee of NGP Energy Capital Management, L.L.C. Accordingly, each of NGP XII US Holdings, L.P., NGP XII Holdings GP, L.L.C., NGP Natural Resources XII, L.P., G.F.W. Energy XII, L.P., GFW XII, L.L.C., NGP ETP III Investments, LLC, NGP Energy Capital Management, L.L.C., Chris Carter, Craig Glick and Jill Lampert may be deemed to have or share beneficial ownership of the common stock held directly by NGP Switchback II, LLC. |