X0306 4 2020-05-14 false 0001455684 TPI COMPOSITES, INC TPIC 0001645109 Siwek William E 8501 NORTH SCOTTSDALE ROAD, GAINEY CENTER II, SUITE 100 SCOTTSDALE AZ 85253 false true false false President Common Stock 2020-05-14 4 M false 4543.00 0.00 A 80557.00 D Common Stock 2020-05-14 4 F false 1911.00 17.87 D 78646.00 D Restricted Stock Units 2020-05-14 4 M false 4543.00 0.00 D Common Stock 4543.00 9087.00 D Represents the shares required to satisfy tax withholding obligations in connection with the vesting of 4,543 restricted stock units ("RSUs"). The restricted stock unit ("RSU") award will vest in three equal installments on the first, second and third anniversary of the date of the grant provided, that the Reporting Person continues to provide services to the Issuer through the vesting date. The RSUs do not have an expiration date. Each restricted stock unit ("RSU") represents a contingent right to receive one share of the common stock. All unvested RSUs will automatically expire upon Reporting Person's termination of service from Issuer. /s/ Steven G. Fishbach, Attorney-in-Fact 2020-05-15