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.
Ultra Clean Holdings, Inc. ownership filing: Frontier Capital Management Co., LLC reports beneficial ownership of 1,787,451 shares of common stock (3.93%) as of 03/31/2026. The filing shows Frontier has sole voting power over 1,002,952 shares and sole dispositive power over 1,787,451 shares.
UCTT reports insider sale activity. Director/officer Jeffrey McKibben sold 2,500 shares on 05/08/2026 for $216,196.00. The filing also lists restricted stock issuances of 1,552 and 2,653 shares, each dated 04/30/2026. The disclosure lists the securities as Common.
Ultra Clean Holdings, Inc. General Counsel and Secretary Paul Yoonku Cho reported an open-market sale of 2,000 shares of Common Stock. The shares were sold at an average price of $86.8901 per share. After this transaction, he directly holds 15,844 shares of the company’s stock.
Ultra Clean Holdings, Inc. Chief Information Officer Jeffrey L. McKibben reported an open-market sale of 2,500 shares of common stock on May 8, 2026. The shares were sold at a weighted average price of $86.4784, with individual trades between $86.46 and $86.55. Following this transaction, McKibben directly holds 15,554 shares of Ultra Clean common stock.
UCTT submitted a Rule 144 notice reporting proposed sales of Common Stock through Morgan Stanley Smith Barney LLC. The filing lists numeric entries including 2000, 173780.20, and 44,828,352, and shows restricted stock items of 1,528 and 472 shares dated 04/30/2026 with a filing date of 05/08/2026.
The issuer listed a proposed sale of Common stock on 05/08/2026 via NASDAQ. The filing shows a listed quantity of 2,500 and additional restricted stock items of 173 and 2,327 dated 04/30/2026. Broker/dealer listed: Morgan Stanley Smith Barney LLC Executive Financial Services.
Ultra Clean Holdings Inc ownership filing shows Invesco Ltd. beneficially owns 1,689,449 shares of Common Stock, representing 3.7% of the class. The filing states Invesco has sole voting power for 1,676,404 shares and sole dispositive power for 1,689,449 shares.
Ultra Clean Holdings, Inc. senior vice president of global human resources Jamie J. Palfrey reported an open-market sale of the company’s common stock. On May 5, 2026, Palfrey sold 8,691 shares of Ultra Clean common stock at a price of $79.725 per share. After this transaction, Palfrey directly holds 16,446 shares of Ultra Clean common stock. This filing reflects a net reduction in Palfrey’s direct ownership position and documents the details of the sale for shareholders.
Ultra Clean Holdings, Inc. Chief Accounting Officer Brian E. Harding reported an open-market sale of 4,000 shares of Common Stock at $80.00 per share. After this transaction, he directly owns 36,631 shares, and the footnote confirms these are directly owned shares.
Ultra Clean Holdings, Inc. executive Christopher S. Cook, President of the Products Division, reported open-market sales of a total of 11,478 shares of common stock on May 4, 2026. The transactions were executed at weighted average prices of $73.89 and $74.55 per share.
According to the filing, the shares in each trade were sold in multiple transactions within price ranges of $73.36–$74.35 and $74.37–$74.905. After these sales, Cook holds 97,427 shares directly and 4,100 shares indirectly through a trust.