0001562180-21-003825 4 1 20210526 20210528 20210528 Castle Thomas J 0001678414 4 34 001-37839 21980058 C/O TPI COMPOSITES, INC. 8501 N. SCOTTSDALE ROAD, SUITE 100 SCOTTSDALE AZ 85253 TPI COMPOSITES, INC 0001455684 3510 201590775 8501 N SCOTTSDALE ROAD GAINEY CENTER II, SUITE 100 SCOTTSDALE AZ 85253 480-305-8910 8501 N SCOTTSDALE ROAD GAINEY CENTER II, SUITE 100 SCOTTSDALE AZ 85253 TPI COMPOSITES INC 20090206 4 1 primarydocument.xml PRIMARY DOCUMENT X0306 4 2021-05-26 false 0001455684 TPI COMPOSITES, INC TPIC 0001678414 Castle Thomas J 8501 NORTH SCOTTSDALE ROAD, GAINEY CENTER II, SUITE 100 SCOTTSDALE AZ 85253 false true false false * See Remarks Common Stock 2021-05-26 4 M false 25423.00 16.5333 A 32254.00 D Common Stock 2021-05-26 4 S false 25423.00 49.1492 D 6831.00 D Common Stock 2021-05-27 4 M false 24577.00 16.5333 A 31408.00 D Common Stock 2021-05-27 4 S false 24577.00 49.5126 D 6831.00 D Stock Option (Right to Buy) 16.5333 2021-05-26 4 M false 25423.00 0.00 D 2025-12-23 Common Stock 25423.00 48817.00 D Stock Option (Right to Buy) 16.5333 2021-05-27 4 M false 24577.00 0.00 D 2025-12-23 Common Stock 24577.00 24240.00 D This transaction was executed in multiple trades at prices ranging from $49.00 to $49.53 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 $49.00 to $49.96. 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. The option representing a right to purchase a total of 174,240 shares, vest over a four year period as follows: 25% of these securities vest on the first anniversary of the effective date of the initial public offering of the Issuer, and 6.25% vest on each quarterly anniversary thereafter, such that 100% of these securities vest on the fourth anniversary of the Issuer's offering; provided, that the Reporting Person remains continuously employed by the Issuer through each applicable vesting date. *SVP, Operations, Strategic Markets /s/ Steven G. Fishbach, Attorney-in-Fact 2021-05-28