# EDGAR Filing Document

**Accession Number:** 0001455684
**File Stem:** 0001193125-26-112276
**Filing Date:** 2026-3
**Character Count:** 6282
**Document Hash:** 6ef296016f1e2a15c40d0e4bbc28ace5
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-112276.hdr.sgml**: 20260318

**ACCESSION NUMBER**: 0001193125-26-112276

**CONFORMED SUBMISSION TYPE**: S-8 POS

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260318

**DATE AS OF CHANGE**: 20260318

**EFFECTIVENESS DATE**: 20260318

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** TPI COMPOSITES, INC
- **CENTRAL INDEX KEY:** 0001455684
- **STANDARD INDUSTRIAL CLASSIFICATION:** ENGINES & TURBINES [3510]
- **ORGANIZATION NAME:** 06 Technology
- **EIN:** 201590775
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** S-8 POS
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-285097
- **FILM NUMBER:** 26764965

**BUSINESS ADDRESS:**
- **STREET 1:** 8501 N SCOTTSDALE ROAD
- **STREET 2:** GAINEY CENTER II, SUITE 100
- **CITY:** SCOTTSDALE
- **STATE:** AZ
- **ZIP:** 85253
- **BUSINESS PHONE:** 480-305-8910

**MAIL ADDRESS:**
- **STREET 1:** 8501 N SCOTTSDALE ROAD
- **STREET 2:** GAINEY CENTER II, SUITE 100
- **CITY:** SCOTTSDALE
- **STATE:** AZ
- **ZIP:** 85253

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** TPI COMPOSITES INC
- **DATE OF NAME CHANGE:** 20090206

**As filed with the Securities and Exchange Commission on March 18, 2026** 

**Registration No. 333-285097** 

**UNITED STATES** 

**SECURITIES AND EXCHANGE COMMISSION** 

**Washington, D.C. 20549** 

**Post-Effective Amendment No. 1** 

**to** 

**Form S-8 Registration Statement File No. 333-285097** 

***Under***

***The Securities Act of 1933***

## TPI Composites, Inc.
**(Exact name of the registrant as specified in its charter)** 

**TPI Composites, Inc. Amended and Restated 2015 Stock Option and Incentive Plan** 

**(Full title of plans)** 

---

| | |
|:---|:---|
| **Delaware** | **20-1590775** |
| **(State or other jurisdiction of**<br> **incorporation or organization)** | **(I.R.S. Employer**<br> **Identification No.)** |

---

**TPI Composites, Inc.** 

**9200 E. Pima Center Parkway, Suite 250** 

**Scottsdale, AZ 85258** 

**(480) 305-8910** 

**(Address, including zip code, and telephone number, including area code, of registrant's principal executive offices)** 

**William E. Siwek** 

**Chief Executive Officer** 

**TPI Composites, Inc.** 

**200 E. Pima Center Parkway, Suite 250** 

**Scottsdale, AZ 85258** 

**(480) 305-8910** 

**(Name and address agent for service)** 

***Copies to:***

**Weil, Gotshal & Manges LLP** 

**767 5th Ave** 

**New York, NY 10153** 

**(212) 310-8000** 

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act.

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| | | | |
|:---|:---|:---|:---|
| Large accelerated filer | ☐¨ | Accelerated filer | ☐¨ |
| Non-accelerated filer | ☒ | Smaller reporting company | ☒ |
|  |  | Emerging growth company | ☐¨ |

---

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of the Securities Act. ☐¨

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**DEREGISTRATION OF UNSOLD SECURITIES** 

This Post-Effective Amendment No. 1 (this "Post-Effective Amendment"), filed by TPI Composites, Inc. a Delaware corporation (the "Registrant"), relates to the following Registration Statement on Form S-8 previously filed by the Registrant with the Securities and Exchange Commission (the "SEC"):

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| | | | |
|:---|:---|:---|:---|
| **Registration No.** | **Date Filed With<br>the SEC** | **Name of Equity Plan** | **Number of Shares of Class A Common**<br>**Stock Originally Registered** |
|  333-285097 | 02/20/2025 | TPI Composites, Inc. Amended and Restated 2015 Stock Option and Incentive Plan | 1904365 |

---

On August 11, 2025, (the "Petition Date"), the Registrant and its direct and indirect subsidiaries incorporated in the United States each filed voluntary petitions for relief under chapter 11 of title 11 of the United States Bankruptcy Code (such cases, the "Chapter 11 Cases") in the United States Bankruptcy Court for the Southern District of Texas. The Chapter 11 Cases are being jointly administered for procedural purposes only under the caption "In re TPI Composites, Inc., et al" Case No. 2534655. In connection with the filing of the Chapter 11 Cases, the Registrant is terminating all offerings of its securities pursuant to the existing registration statements under the Securities Act of 1933, including the Registration Statement.

Pursuant to the undertaking made by the Registrant in the Registration Statement to remove from registration by means of a post-effective amendment any of the securities that had been registered for issuance that remain unsold at the termination of the offering, the Registrant is filing this Post-Effective Amendment to terminate the effectiveness of the Registration Statement and to deregister, as of the effectiveness of this Post-Effective Amendment, any and all shares of common stock of the Registrant registered thereunder that remain unsold as of the effective date. As a result of this deregistration and upon the effectiveness of this Post-Effective Amendment, no securities will remain registered pursuant to the Registration Statement.

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**SIGNATURE** 

Pursuant to the requirements of the Securities Act of 1933, the Registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and has duly caused this Post-Effective Amendment to this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized in the City of Scottsdale, State of Arizona, on March 18, 2026.

---

| | |
|:---|:---|
| **TPI COMPOSITES, INC.** | **TPI COMPOSITES, INC.** |
| By: | /s/ William E. Siwek |
| Name: William E. Siwek | Name: William E. Siwek |
| Title: President and Chief Executive Officer | Title: President and Chief Executive Officer |

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Note: No other person is required to sign this Post-Effective Amendment in reliance upon Rule 478 under the Securities Act of 1933.