X0306 4 2017-05-16 0 0001455684 TPI COMPOSITES, INC TPIC 0001241831 DEUTCH PHILIP J 1700 K STREET NW, SUITE 750 WASHINGTON DC 20006 1 0 1 0 Common Stock 2017-05-17 4 S 0 1358126 16.35 D 2442190 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 NGP Energy Technology Partners, L.P. ("NGP LP"). NGP ETP, L.L.C. ("NGP ETP") is the general partner of NGP LP and Energy Technology Partners, L.L.C. ("ETP LLC") is the manager of NGP ETP. The Reporting Person is the manager of ETP LLC. The Reporting Person may be deemed to share voting and investment power with respect to all shares held by NGP LP. 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