Vanguard Portfolio Management LLC filed an amended beneficial ownership statement with the SEC on October 30, 2026, disclosing a 4.98% stake in Entegris Inc as of September 30, 2026.

Key Highlights

  • Aggregate beneficial ownership: Vanguard Portfolio Management reported 7,617,615 shares of Entegris Inc common stock beneficially owned.
  • Percent of class: The reported holdings represent 4.98% of Entegris Inc's outstanding common stock.
  • Sole dispositive power: Vanguard Portfolio Management holds sole power to dispose of all 7,617,615 shares reported.
  • Sole voting power: Only 24,630 shares carry sole voting power; shared voting power is reported as zero.
  • Event date: The filing was triggered by an ownership event dated September 30, 2026.
  • Amendment number: This statement is designated Amendment No. 1 to a prior filing.

Vanguard Portfolio Management's Disclosed Position in Entegris Inc

According to the filing, Vanguard Portfolio Management LLC, organized in Pennsylvania and headquartered at 100 Vanguard Blvd, Malvern, PA 19355, reported aggregate beneficial ownership of 7,617,615 shares of Entegris Inc (NASDAQ:ENTG) common stock, representing 4.98% of the class. Entegris Inc, whose principal executive offices are located at 129 Concord Road, Billerica, MA 01821, is the issuer of the common stock identified by CUSIP number 29362U104.

The filing states that Vanguard Portfolio Management holds sole dispositive power over all 7,617,615 shares, while sole voting power applies to only 24,630 shares. Shared voting power and shared dispositive power are each reported as zero. The statement identifies Vanguard Portfolio Management as an investment adviser for purposes of this filing. According to the disclosure, the reported securities include holdings of Vanguard funds or sleeves thereof over which Vanguard Portfolio Management LLC exercises dispositive power, as well as securities held by clients of its affiliates Vanguard Fiduciary Trust Company and Vanguard Global Advisers, LLC.

The filing further notes that Vanguard Portfolio Management, including investment companies registered under the Investment Company Act of 1940 and other managed accounts, holds the right to receive or direct the receipt of dividends from, or proceeds from the sale of, the securities reported. The filing states that no single other person's interest in the reported securities exceeds 5%. The statement was signed by My Trieu-Gatt, identified as Authorized Signatory and Head of Global Fund Administration, on October 30, 2026.

What Was Disclosed

Vanguard Portfolio Management LLC filed an amended beneficial ownership report covering 7,617,615 shares of Entegris Inc common stock, equal to 4.98% of the class, as of a September 30, 2026 triggering event, with sole dispositive power over all shares reported.