# EDGAR Filing Document

**Accession Number:** 0001275014
**File Stem:** 0001628280-26-038205
**Filing Date:** 2026-5
**Character Count:** 6528
**Document Hash:** 72354dfa45c834f4feb5a5bcff76307c
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001628280-26-038205.hdr.sgml**: 20260526

**ACCESSION NUMBER**: 0001628280-26-038205

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 12

**CONFORMED PERIOD OF REPORT**: 20260522

**ITEM INFORMATION**: Submission of Matters to a Vote of Security Holders

**FILED AS OF DATE**: 20260526

**DATE AS OF CHANGE**: 20260526

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Ultra Clean Holdings, Inc.
- **CENTRAL INDEX KEY:** 0001275014
- **STANDARD INDUSTRIAL CLASSIFICATION:** SEMICONDUCTORS & RELATED DEVICES [3674]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 611430858
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1230

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 000-50646
- **FILM NUMBER:** 261020973

**BUSINESS ADDRESS:**
- **STREET 1:** 26462 CORPORATE AVENUE
- **CITY:** HAYWARD
- **STATE:** CA
- **ZIP:** 94545
- **BUSINESS PHONE:** (510) 576-4400

**MAIL ADDRESS:**
- **STREET 1:** 26462 CORPORATE AVENUE
- **CITY:** HAYWARD
- **STATE:** CA
- **ZIP:** 94545

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** ULTRA CLEAN HOLDINGS INC
- **DATE OF NAME CHANGE:** 20031231

?xml version='1.0' encoding='ASCII'? uctt-20260522

**UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549**

**FORM 8-K**

**CURRENT REPORT**

**Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934**

**Date of Report (Date of earliest event reported): May 22, 2026**<br>

![UCT Logo.jpg](uctt-20260522_g1.jpg)

**Ultra Clean Holdings, Inc.**

**(Exact name of Registrant as Specified in Its Charter)**

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| | | |
|:---|:---|:---|
| **Delaware** | **000-50646** | **61-1430858** |
| **(State or Other Jurisdiction<br>of Incorporation)** | **(Commission File Number)** | **(IRS Employer<br>Identification No.)** |
| **26462 Corporate Avenue** | | |
| **Hayward, California** | | **94545** |
| **(Address of Principal Executive Offices)** | | **(Zip Code)** |

---

**Registrant's Telephone Number, Including Area Code: 510 576-4400**<br>

**N/A**

**(Former Name or Former Address, if Changed Since Last Report)**

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

**Securities registered pursuant to Section 12(b) of the Act:**

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| | | |
|:---|:---|:---|
| **Title of each class** | **Trading<br>Symbol(s)** | **Name of each exchange on which registered** |
| Common Stock, $0.001 par value | UCTT | The Nasdaq Global Market |

---

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company ☐

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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 13(a) of the Exchange Act. ☐

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**Item 5.07 Submission of Matters to a Vote of Security Holders.**

On May 22, 2026, at the 2026 Annual Meeting of Stockholders (the "Annual Meeting") of Ultra Clean Holdings, Inc. (the "Company"), the stockholders of the Company considered and approved three proposals, each of which is described in more detail in the Company's definitive proxy statement for the Annual Meeting filed with the Securities and Exchange Commission on April 27, 2026.

The vote results detailed below represent the final results as certified by the Inspector of Elections:

**<u>Proposal 1</u>**

Election of directors for a one-year term.

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| | | | | |
|:---|:---|:---|:---|:---|
| **Director** | **For** | **Against** | **Abstain** | **Broker Non-Votes** |
| Thomas T. Edman | 35583689 | 420800 | 13128 | 4399277 |
| James Xiao | 35497518 | 506734 | 13365 | 4399277 |
| Clarence L. Granger | 35515152 | 489995 | 12470 | 4399277 |
| David T. ibnAle | 33590773 | 2413324 | 13520 | 4399277 |
| Emily M. Liggett | 33594708 | 2411196 | 11713 | 4399277 |
| Ernest E. Maddock | 35812702 | 193074 | 11841 | 4399277 |
| Jacqueline A. Seto | 35604277 | 401727 | 11613 | 4399277 |
| Joanne Solomon | 35883333 | 123624 | 10660 | 4399277 |

---

**<u>Proposal 2</u>**

Ratification of the appointment of PricewaterhouseCoopers LLP to serve as the Company's independent registered public accounting firm for fiscal 2026.

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| | | |
|:---|:---|:---|
| **For** | **Against** | **Abstain** |
| 40,130,181 | 183,200 | 103,513 |

---

**<u>Proposal 3</u>**

Approval, by non-binding advisory vote, of the compensation paid by the Company to its Named Executive Officers.

---

| | | | |
|:---|:---|:---|:---|
| **For** | **Against** | **Abstain** | **Broker Non-Votes** |
| 35,100,113 | 773,047 | 144,457 | 4,399,277 |

---

**<u>Proposal 4</u>**

Approval of the amendment and restatement of the Company's stock incentive plan (the "Plan") to increase the number of shares available for issuance under the Plan by an additional 3,500,000 shares.

---

| | | | |
|:---|:---|:---|:---|
| **For** | **Against** | **Abstain** | **Broker Non-Votes** |
| 34,373,240 | 1,526,066 | 118,311 | 4,399,277 |

---

**<u>Proposal 5</u>**

Approval of the amendment and restatement of the Company's employee stock purchase plan (the "ESPP") to increase the number of shares available for issuance under the ESPP by an additional 450,000 shares.

---

| | | | |
|:---|:---|:---|:---|
| **For** | **Against** | **Abstain** | **Broker Non-Votes** |
| 35,885,605 | 23,182 | 108,830 | 4,399,277 |

---

------

**SIGNATURES**

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

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| | | | |
|:---|:---|:---|:---|
| | | | ULTRA CLEAN HOLDINGS, INC. |
| Date: | May 26, 2026 | By: | /s/ Paul Y. Cho |
|  |  |  | Name: Paul Y. Cho<br>Title: General Counsel and Corporate Secretary  |

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