Welcome to our dedicated page for Ultra Clean Hldgs SEC filings (Ticker: UCTT), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Ultra Clean Holdings, Inc. filings document the company's operating results, governance matters, and capital-structure activity as a Nasdaq-listed supplier to the semiconductor industry. Form 8-K reports cover quarterly and annual financial results, executive and board leadership changes, material agreements, and financing transactions.
The company's regulatory record also includes proxy materials for annual meeting and shareholder voting matters, along with disclosures on its common stock, credit-facility amendments, and 0.00% Convertible Senior Notes due 2031. These filings describe formal updates to Ultra Clean's financing arrangements, officer succession, board oversight, and public-company reporting obligations.
Cook Christopher S reported acquisition or exercise transactions in this Form 4 filing.
Ultra Clean Holdings, Inc. reported that Christopher S. Cook, President of the Products Division, received a grant of 13,196 shares of common stock at a price of $0.00 per share as a compensation-related award. After this grant, he directly holds 110,623 shares of common stock and indirectly holds 4,100 shares through a trust. A related footnote explains that the restricted stock units underlying this award vest over three years, with equal portions vesting on each anniversary of the vesting commencement date of May 22, 2026.
Ultra Clean Holdings, Inc. reported that its General Counsel and Secretary, Paul Yoonku Cho, received an equity compensation grant. On May 22, 2026, he was awarded 8,041 shares of Common Stock at no cash cost, classified as a grant or award acquisition.
Following this transaction, Cho directly holds 23,885 shares of the company’s Common Stock. A related footnote explains that the award consists of restricted stock units that vest over three years, with equal portions vesting on each anniversary of the May 22, 2026 vesting commencement date.
Xiao Jinsong reported acquisition or exercise transactions in this Form 4 filing.
Ultra Clean Holdings, Inc. Chief Executive Officer Jinsong Xiao received an equity compensation grant of 31,175 shares of common stock on May 22, 2026. The award is in the form of restricted stock units that vest over three years, with equal portions vesting on each anniversary of the May 22, 2026 vesting commencement date.
Following this grant, Xiao directly holds 149,123 shares of Ultra Clean common stock. The grant was recorded at no cash purchase price, reflecting a compensation-related award rather than an open-market share purchase.
Solomon Joanne reported acquisition or exercise transactions in this Form 4 filing.
Ultra Clean Holdings, Inc. director Joanne Solomon reported receiving a grant of 2,575 shares of common stock as a stock-based award. The award was recorded at a price of $0.00 per share, reflecting compensation rather than a market purchase. Following this grant, Solomon directly holds 12,083 common shares. According to the footnote, these restricted stock units vest 100% on the earlier of the day before the next annual stockholder meeting or one year from the grant date, tying the award to her continued board service over roughly a one-year period.
McKibben Jeffrey L. reported acquisition or exercise transactions in this Form 4 filing.
Ultra Clean Holdings, Inc. reported that Chief Information Officer Jeffrey L. McKibben received an equity award of 5,896 shares of common stock as a grant with no cash price per share. Following this award, he directly holds 17,245 common shares.
The grant is in the form of restricted stock units that vest over three years, with equal portions vesting on each anniversary of the vesting commencement date of May 22, 2026. This structure ties the value of the award to McKibben’s continued service and the company’s share performance over time.
Seto Jacqueline A. reported acquisition or exercise transactions in this Form 4 filing.
Ultra Clean Holdings, Inc. director Jacqueline A. Seto received an equity award of 2,575 shares of common stock as a grant with no cash paid per share. Following this award, she directly holds 31,525 common shares. The award consists of restricted stock units that vest 100% on the earlier of the day before the next annual stockholder meeting or one year from the grant date.
Ultra Clean Holdings, Inc. reported that SVP, Global Human Resources Jamie J. Palfrey acquired 9,897 shares of common stock through a compensation-related grant. These restricted stock units vest over three years, with equal parts vesting on each anniversary of the vesting commencement date of May 22, 2026. Following this award, Palfrey directly holds 26,343 shares of common stock.
MADDOCK ERNEST E reported acquisition or exercise transactions in this Form 4 filing.
Ultra Clean Holdings, Inc. director Ernest E. Maddock reported an equity award of company common stock. On May 22, 2026, he received 2,575 shares of common stock as a grant or award at a stated price of $0.00 per share, increasing his direct holdings to 47,816 shares.
The filing also shows 11,000 shares of common stock held indirectly by a trust. According to the footnote, the related restricted stock units vest 100% on the earlier of the day before the next annual stockholder meeting or one year from the grant date.
Wunar Robert Anthony reported acquisition or exercise transactions in this Form 4 filing.
Ultra Clean Holdings, Inc. reported that Chief Operating Officer Robert Anthony Wunar received a grant of 10,732 shares of Common Stock, reflected as an award at a price of $0.00 per share. Following this grant, he directly holds 10,732 shares.
A footnote explains that these are restricted stock units that vest over three years, with equal portions vesting on each anniversary of the vesting commencement date of May 22, 2026. This is a compensation-related equity award rather than an open‑market purchase or sale.
Ultra Clean Holdings director Emily M. Liggett reported both a stock award and a share sale. On May 22, 2026, she acquired 2,575 shares of common stock at $0.00 per share as a grant. The related restricted stock units vest 100% on the earlier of the day before the next annual stockholder meeting or one year from the grant date.
On May 27, 2026, she executed an open-market sale of 8,198 common shares at an average price of $92.18 per share. Following this sale, she directly holds 38,152 common shares, indicating she retains a significant ongoing equity stake in the company.