X0206 3 2016-07-05 0 0001661920 Lonestar Resources US Inc. LONE 0001387869 ECOFIN LTD 15 BUCKINGHAM STREET LONDON X0 WC2N 6DU UNITED KINGDOM 0 0 1 0 Class A Voting Common Stock 0 I See Footnotes Ecofin Limited ("EL") is reporting beneficial ownership of 4,174,259 shares of the Issuer's Class A Voting Common Stock ("Shares"), which as of July 5, 2016 were held directly by EFR Guernsey Holding Limited ("EFR"). On July 5, 2016, EL served as investment manager to EFR and EFR's parent company, and as a result EL may be deemed as of such date to be beneficial owner of the Shares for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended. EL does not have any pecuniary interest (as defined in Rule 16a-1(a)(2) of the Exchange Act) in any of the Shares, and EL's pecuniary interest and beneficial ownership over such Shares is expressly disclaimed. The filing of this Form 3 shall not be construed as an admission that EL is the beneficial owner of any of the Shares. /s/ Vincent Barnouin, Chief Executive Officer 2016-11-07