X0306 4 2018-03-13 0 0001455684 TPI COMPOSITES, INC TPIC 0001435350 ELEMENT PARTNERS II LP 565 E SWEDESFORD ROAD, SUITE 207 WAYNE PA 19087 0 0 1 0 0001442909 ELEMENT PARTNERS II INTRAFUND LP 565 E SWEDESFORD ROAD, SUITE 207 WAYNE PA 19087 0 0 1 0 0001678851 Element Partners II G.P., L.P. 565 E SWEDESFORD ROAD, SUITE 207 WAYNE PA 19087 0 0 1 0 0001678834 Element II G.P., LLC 565 E SWEDESFORD ROAD, SUITE 207 WAYNE PA 19087 0 0 1 0 Common Stock 2018-03-13 4 J 0 200000 0.00 D 8098848 I See Footnote Represents a pro rata distribution from Element Partners II, L.P. ("EP II") and Element Partners II Intrafund, L.P. ("Intrafund") to their partners for no consideration pursuant to a Rule 10b5-1 trading plan. These securities are held of record by EP II and Intrafund. Element Partners II G.P., L.P. ("GP LP") is the general partner of both EP II and Intrafund, and Element II G.P., LLC ("GP LLC") is the general partner of GP LP. This report on Form 4 is jointly filed by EP II, Intrafund, GP LP and GP LLC. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein for purposes of Rule 16a-1(a) under the Securities Exchange Act of 1934, as amended (the "Exchange Act"), except to the extent of its pecuniary interest therein, if any. This report shall not be deemed an admission that any of the Reporting Persons is a beneficial owner of such securities for the purpose of Section 16 of the Exchange Act, or for any other purpose. /s/ Steven G. Fishbach, Attorney-in-Fact for Element Partners II, L.P. 2018-03-15 /s/ Steven G. Fishbach, Attorney-in-Fact for Element Partners II Intrafund, L.P. 2018-03-15 /s/ Steven G. Fishbach, Attorney-in-Fact for Element Partners II G.P., L.P. 2018-03-15 /s/ Steven G. Fishbach, Attorney-in-Fact for Element II G.P., LLC 2018-03-15