X0306 4 2018-03-13 0 0001455684 TPI COMPOSITES, INC TPIC 0001679525 Weiss Daniel G 2029 CENTURY PARK EAST SUITE 2980 LOS ANGELES CA 90067 1 0 1 0 Common Stock 2018-03-13 4 S 0 50426 22.91 D 3805423 I See Footnote Common Stock 2018-03-14 4 S 0 49574 22.56 D 3755849 I See Footnote Common Stock 2018-03-15 4 S 0 100000 22.35 D 3655849 I See Footnote Common Stock 2880 D This transaction was executed in multiple trades at prices ranging from $22.80 to $23.11. The price reported above reflects the weighted average price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transaction was effected. These securities are held directly by Angeleno Investors II, L.P. Angeleno Group Management II, LLC is the General Partner of Angeleno Investors II, L.P. and Angeleno Group, LLC is the Managing Member of Angeleno Group Management II, 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, except to the extent of its pecuniary interest therein, if any. This transaction was executed in multiple trades at prices ranging from $22.50 to $22.90. The price reported above reflects the weighted average price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transaction was effected. This transaction was executed in multiple trades at prices ranging from $22.11 to $22.83. The price reported above reflects the weighted average price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transaction was effected. /s/ Steven G. Fishbach, Attorney-in-Fact 2018-03-15