# EDGAR Filing Document

**Accession Number:** 0001275014
**File Stem:** 0000950103-26-002821
**Filing Date:** 2026-2
**Character Count:** 17960
**Document Hash:** 830dc6cb8fca502cc850849a8acae207
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000950103-26-002821.hdr.sgml**: 20260227

**ACCESSION NUMBER**: 0000950103-26-002821

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 14

**CONFORMED PERIOD OF REPORT**: 20260226

**ITEM INFORMATION**: Entry into a Material Definitive Agreement

**ITEM INFORMATION**: Other Events

**ITEM INFORMATION**: Financial Statements and Exhibits

**FILED AS OF DATE**: 20260227

**DATE AS OF CHANGE**: 20260227

**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:** 26692362

**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'?

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**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): February 26, 2026**

![UCT Logo.jpg](image_001.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)**<br>| **(Commission File Number)** | **(IRS Employer** <br> **Identification No.)**<br>|

---

---

| | |
|:---|:---|
| **26462 Corporate Avenue**<br>|  |
| **Hayward, California**<br>| **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:**

---

| | | |
|:---|:---|:---|
| **Title of each class** | **Trading** <br> **Symbol(s)**<br>| **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 ☐

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. ☐

------

**Item 1.01. Entry into a Material Definitive Agreement**

On February 26, 2026, in connection with the pricing of the Notes described under Item 8.01 of this Current Report on Form 8-K, Ultra Clean Holdings, Inc. (the "<u>Company</u>"), Barclays Bank PLC, as administrative agent, and the revolving lenders party thereto, entered into that certain Ninth Amendment dated as of February 26, 2026 (the "Ninth Amendment") to the Credit Agreement dated as of August 27, 2018, by and among the Company, as parent borrower, Barclays Bank PLC, as administrative agent, and the lenders and other parties thereto from time to time (as amended, restated, amended and restated, supplemented or otherwise modified from time to time, the "Credit Agreement"). Pursuant to the Ninth Amendment, the Credit Agreement was amended to, among other things, increase the maximum permitted "Consolidated Total Gross Leverage Ratio" financial maintenance covenant described in the Credit Agreement (which covenant is only applicable to the revolving credit facility thereunder) to 6.00 to 1.00 (the "Financial Covenant Adjustment"). The Financial Covenant Adjustment will only apply to the fiscal periods ending on or about March 31, 2026 and June 30, 2026, in each case subject to the terms and conditions set forth in the Ninth Amendment. A copy of the Ninth Amendment will be filed as an exhibit to the Company's Quarterly Report for the quarter ended March 27, 2026.

**Item 8.01. Other Events.**

On February 26, 2026, the Company issued a press release relating to the pricing of its offering of 0.00% Convertible Senior Notes due 2031 (the "<u>Notes</u>") to qualified institutional buyers pursuant to Rule 144A under the Securities Act of 1933, as amended. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated by reference into this Item 8.01.

Neither this Current Report on Form 8-K nor the press release attached as Exhibit 99.1 to this Current Report on Form 8-K constitutes an offer to sell, or the solicitation of an offer to buy, the Notes or shares of the Company's common stock, if any, issuable upon conversion of the Notes.

**Item 9.01. Financial Statements and Exhibits.**

<u>Exhibits</u>

<u> Exhibit Number </u> <u> Description </u> <br> [99.1](dp242232_ex9901.htm) [Press release of Ultra Clean Holdings, Inc., dated February 26, 2026.](dp242232_ex9901.htm) <br> 104 Cover Page Interactive Data File (embedded within the Inline XBRL document)

**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.

---

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

---

## Exhibit 99.1

**Exhibit 99.1**

**Ultra Clean Prices Upsized $525.0 Million Convertible Senior Notes Offering**

HAYWARD, Calif., February 26, 2026 /PRNewswire/ — Ultra Clean Holdings, Inc. (Nasdaq: UCTT) today announced the pricing of its offering of $525.0 million aggregate principal amount of 0.00% convertible senior notes due 2031 (the "notes") in a private offering to persons reasonably believed to be qualified institutional buyers pursuant to Rule 144A under the Securities Act of 1933, as amended (the "Securities Act"). The offering size was increased from the previously announced offering size of $400.0 million aggregate principal amount of notes. The issuance and sale of the notes are scheduled to settle on March 3, 2026, subject to customary closing conditions. Ultra Clean also granted the initial purchasers of the notes an option to purchase, for settlement within a period of 13 days from, and including, the date the notes are first issued, up to an additional $75.0 million principal amount of notes.

Ultra Clean estimates that the net proceeds from the offering will be approximately $511.1 million (or approximately $584.2 million if the initial purchasers fully exercise their option to purchase additional notes), after deducting the initial purchasers' discounts and commissions and estimated offering expenses. Ultra Clean intends to use the net proceeds from the offering as follows:

&nbsp;&nbsp;&nbsp;&nbsp;· approximately $21.9 million of the net proceeds from the offering to fund the cost of entering into the
capped call transactions described below;

&nbsp;&nbsp;&nbsp;&nbsp;· approximately $40.0 million of the net proceeds from the offering to repurchase 672,608 shares of its
common stock; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;· the remainder for working capital, prepayment of a portion of the company's outstanding term loan
under its amended and restated credit agreement or other general corporate purposes.

If the initial purchasers exercise their option to purchase additional notes, then Ultra Clean intends to use a portion of the additional net proceeds to fund the cost of entering into additional capped call transactions, as described below, and the remainder for the purposes described above.

The notes will be senior, unsecured obligations of Ultra Clean. The notes will not bear regular interest and the principal amount of the notes will not accrete. The notes will mature on March 15, 2031, unless earlier repurchased, redeemed or converted. Before December 16, 2030, noteholders will have the right to convert their notes only upon the occurrence of certain events. From and after December 16, 2030, noteholders may convert their notes at any time at their election until the close of business on the second scheduled trading day immediately before the maturity date. Ultra Clean will settle conversions in cash and, if applicable, shares of its common stock. The initial conversion rate is 11.8001 shares of common stock per $1,000 principal amount of notes, which represents an initial conversion price of approximately $84.75 per share of common stock. The initial conversion price represents a premium of approximately 42.5% over the last reported sale price of $59.47 per share of Ultra Clean's common stock on February 26, 2026. The conversion rate and conversion price will be subject to adjustment upon the occurrence of certain events. If a "make-whole fundamental change" (as defined in the indenture for the notes) occurs, then Ultra Clean will, in certain circumstances, increase the conversion rate for a specified period of time for holders who convert their notes in connection with that make-whole fundamental change.

The notes will be redeemable, in whole or in part (subject to certain limitations), for cash at Ultra Clean's option at any time, and from time to time, on or after March 20, 2029 and on or before the 40th scheduled trading day immediately before the maturity date, but only if the last reported sale price per share of Ultra Clean's common stock exceeds 130% of the conversion price for a specified period of time and certain other conditions are satisfied. The redemption price will be equal to the principal amount of the notes to be redeemed, plus accrued and unpaid special interest and additional interest, if any, to, but excluding, the redemption date. If Ultra Clean calls any or all notes for redemption, then holders of notes called for redemption may convert their notes during the related redemption conversion period, and such conversions will also constitute a make-whole fundamental change with respect to the notes so converted.

If a "fundamental change" (as defined in the indenture for the notes) occurs, then, subject to a limited exception, noteholders may require Ultra Clean to repurchase their notes for cash. The repurchase price will be equal to the principal amount of the notes to be repurchased, plus accrued and unpaid special interest and additional interest, if any, to, but excluding, the applicable repurchase date.

In connection with the pricing of the notes, Ultra Clean entered into privately negotiated capped call transactions with certain of the initial purchasers or their affiliates and certain other financial institutions (the "option counterparties"). The capped call transactions will cover, subject to anti-dilution adjustments substantially similar to those applicable to the notes, the number of shares of Ultra Clean's common stock initially underlying the notes. If the initial purchasers exercise their option to purchase additional notes, Ultra Clean expects to enter into additional capped call transactions with the option counterparties.

The cap price of the capped call transactions will initially be $104.0725 per share, which represents a premium of 75.0% over the last reported sale price of Ultra Clean's common stock of $59.47 per share on February 26, 2026, and is subject to certain adjustments under the terms of the capped call transactions.

The capped call transactions are expected generally to reduce the potential dilution to Ultra Clean's common stock upon any conversion of the notes and/or offset any potential cash payments Ultra Clean is required to make in excess of the principal amount of converted notes, as the case may be, upon conversion of the notes. If, however, the market price per share of Ultra Clean's common stock, as measured under the terms of the capped call transactions, exceeds the cap price of the capped call transactions, there would nevertheless be dilution and/or there would not be an offset of such potential cash payments, in each case, to the extent that such market price exceeds the cap price of the capped call transactions.

Ultra Clean has been advised that, in connection with establishing their initial hedges of the capped call transactions, the option counterparties or their respective affiliates expect to enter into various derivative transactions with respect to Ultra Clean's common stock and/or purchase shares of Ultra Clean's common stock concurrently with or shortly after the pricing of the notes. This activity could increase (or reduce the size of any decrease in) the market price of Ultra Clean's common stock or the notes at that time.

In addition, the option counterparties or their respective affiliates may modify their hedge positions by entering into or unwinding various derivatives with respect to Ultra Clean's common stock and/or purchasing or selling Ultra Clean's common stock or other securities of Ultra Clean in secondary market transactions following the pricing of the notes and prior to the maturity of the notes (and (x) are likely to do so during the relevant valuation period under the capped call transactions and (y) are likely to do so following any early conversion or repurchase of the notes by Ultra Clean, if Ultra Clean elects to unwind a corresponding portion of the capped call transactions in connection with such early conversion or repurchase). This activity could also cause or avoid an increase or a decrease in the market price of Ultra Clean's common stock or the notes, which could affect the ability to convert the notes and, to the extent the activity occurs during any observation period related to a conversion of notes, it could affect the number of shares of common stock and value of the consideration that noteholders will receive upon conversion of the notes.

Concurrently with the pricing of the notes, Ultra Clean entered into privately negotiated transactions with or through one of the initial purchasers of the notes in this offering to use approximately $40.0 million of the net proceeds from the notes offering to repurchase shares of Ultra Clean's common stock at a purchase price of $59.47 per share. These share repurchases could increase (or reduce the size of any decrease in) the market price of Ultra Clean's common stock or the notes, and could result in a higher effective conversion price for the notes. The offering of the notes is not contingent upon the repurchase of any common stock.

The offer and sale of the notes and any shares of common stock issuable upon conversion of the notes have not been, and will not be, registered under the Securities Act or any other securities laws, and the notes and any such shares cannot be offered or sold except pursuant to an exemption from, or in a transaction not subject to, the registration requirements of the Securities Act and any other applicable securities laws. This press release does not constitute an offer to sell, or the solicitation of an offer to buy, the notes or any shares of common stock issuable upon conversion of the notes, nor will there be any sale of the notes or any such shares, in any state or other jurisdiction in which such offer, sale or solicitation would be unlawful.

**Forward-Looking Statements**

This press release includes forward-looking statements, including statements regarding the completion of the offering and the share repurchases, the expected amount and intended use of the net proceeds and the effects of entering into the capped call transactions described above. Forward-looking statements represent Ultra Clean's current expectations regarding future events and are subject to known and unknown risks and uncertainties that could cause actual results to differ materially from those implied by the forward-looking statements. Among those risks and uncertainties are market conditions, the satisfaction of the closing conditions related to the offering and risks relating to Ultra Clean's business, including those described in periodic reports that Ultra Clean files from time to time with the SEC. Ultra Clean may not consummate the offering described in this press release and, if the offering is consummated, cannot provide any assurances regarding its ability to effectively apply the net proceeds as described above. The forward-looking statements included in this press release speak only as of the date of this press release, and Ultra Clean does not undertake to update the statements included in this press release for subsequent developments, except as may be required by law.

**Contact**

Rhonda Bennetto

SVP Investor Relations

rbennetto@uct.com