0001562180-21-002317 4 1 20210315 20210317 20210317 Castle Thomas J 0001678414 4 34 001-37839 21752611 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 FORM 4 OMB APPROVAL [ ] Check this OMB Number: box if no longer UNITED STATES SECURITIES AND EXCHANGE COMMISSION 3235-0287 subject to Washington, D.C. 20549 Estimated Section 16. Form STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF average burden 4 or Form 5 SECURITIES hours per obligations may response... 0.5 continue. See Instruction 1(b). Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940 1. Name and Address of Reporting 2. Issuer Name and Ticker 5. Relationship of Person * or Trading Symbol Reporting Person(s) to Castle Thomas J TPI COMPOSITES, INC [ TPIC Issuer (Check all ] applicable) _____ Director _____ 10% Owner __X__ Officer (give title (Last) (First) (Middle) 3. Date of Earliest below) _____ Other 8501 NORTH SCOTTSDALE Transaction (MM/DD/YYYY) (specify below) ROAD,, GAINEY CENTER II, SUITE 3/15/2021 * See Remarks 100 (Street) 4. If Amendment, Date 6. Individual or SCOTTSDALE, AZ 85253 Original Filed Joint/Group Filing (Check (City) (State) (Zip) (MM/DD/YYYY) Applicable Line) _X _ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security 2. Trans. Date 2A. 3. Trans. 4. Securities Acquired (A) or Disposed 5. Amount of 6. Ownership 7. Nature of (Instr. 3) Deemed Code of (D) Securities Form: Direct (D) Indirect Execution (Instr. 8) (Instr. 3, 4 and 5) Beneficially or Indirect (I) Beneficial Date, if Owned Following (Instr. 4) Ownership (Instr. any Reported 4) Transaction(s) (A) (Instr. 3 and 4) or Code V Amount (D) Price Common Stock 3/15/2021 M 3308.00 A $0.00 7861.00 D Common Stock 3/15/2021 S 1030.00 (1) D $52.30 (2) 6831.00 D Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities) 1. Title of 2. 3. Trans. Date 3A. 4. Trans. 5. Number of 6. Date Exercisable and Expiration 7. Title and Amount of 8. Price 9. Number of 10. 11. Nature Derivate Security Conversion Deemed Code Derivative Date Securities Underlying of derivative Ownership of (Instr. 3) or Execution (Instr. 8) Securities Acquired Derivative Security Derivative Securities Form of Indirect Exercise Date, if (A) or Disposed of (Instr. 3 and 4) Security Beneficially Derivative Beneficial Price of any (D) (Instr. 5) Owned Security: Ownership Derivative (Instr. 3, 4 and 5) Following Direct (D) (Instr. 4) Security Reported or Transaction(s) Indirect Date Amount or (Instr. 4) (I) Exercisable Expiration Date Title Number of (Instr. 4) Code V (A) (D) Shares Restricted Stock (3) 3/15/2021 M 3308.00 (3) (4) (3) (4) Common 3308.00 $0.00 0.00 D Units Stock Explanation of Responses: (1) Represents the shares sold in a non-discretionary transaction to cover tax withholding obligations in connection with the vesting of 3,308 restricted stock units ("RSUs"). (2) This transaction was executed in multiple trades at prices ranging from $51.91 to $52.87. 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. (3) 100% of the RSUs vested in full on the third anniversary of the grant date; provided that the Reporting Person continues to provide service to the Issuer through the vesting date. The RSUs do not have an expiration date. (4) Each 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. Remarks: *SVP, Operations, Strategic Markets Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Castle Thomas J 8501 NORTH SCOTTSDALE ROAD, * See Remarks GAINEY CENTER II, SUITE 100 SCOTTSDALE, AZ 85253 Signatures /s/ Steven G. Fishbach, Attorney-in-Fact 3/17/2021 ** Signature of Reporting Person Date Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. * If the form is filed by more than one reporting person, see Instruction 4(b)(v). ** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a). Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure. Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.