X0306 4 2017-05-16 0 0001455684 TPI COMPOSITES, INC TPIC 0001309058 DeRosa Michael Lawrence 565 E SWEDESFORD ROAD, SUITE 207 WAYNE PA 19087 1 0 1 0 Common Stock 2017-05-17 4 S 0 1132572 16.35 D 8298848 I See Footnote Restricted Stock Units 2017-05-16 4 A 0 3740 0.00 A Common Stock 3740 3740 D These securities are held of record by Element Partners II, L.P. ("EP II") and Element Partners II Intrafund, L.P. ("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. The Reporting Person is a managing member of GP LLC and may be deemed to share voting and investment power with respect to all shares held by EP II and Intrafund. The Reporting Person 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 his pecuniary interest therein, if any. Each restricted stock unit ("RSU") represents a contingent right to receive one share of Common Stock. All unvested RSUs will automatically expire upon the Reporting Person's termination of service from the Issuer. The RSUs shall vest in full on the first year anniversary of the grant date; provided, that the Reporting Person continues to provide service to the Issuer through the vesting date. The Reporting Person was granted the RSUs on the date of the Issuer's annual stockholder meeting pursuant to the Issuer's Non-Employee Director Compensation Policy. /s/ Steven G. Fishbach, Attorney-in-Fact 2017-05-18