Ultra Clean Holdings: CEO Xiao Jinsong sold 19,188 shares

What happened The filing says Xiao Jinsong, CEO, had 19,188 shares withheld to satisfy a tax liability from the partial settlement of vested restricted stock units; shares were valued at $81.06 each, totaling $1,555,379 on Sep 30, 2026.

Key details

• Transaction date and price: Sep 30, 2026 — 19,188 shares at $81.06 per share (transaction code F: tax withholding).
• Shares owned after the transaction: the filing does not report shares owned after the transaction.
• Footnote F1: "Represents shares automatically withheld for payment of tax liability arising as a result of the partial settlement of restricted stock unit awards that vested."
• Filed Oct 02, 2026 (accession 0000950103-26-015166); the filing does not indicate it was late.

Why it may matter The filing shows this was a tax-withholding disposition tied to vested restricted stock units, not a separate open-market sale transaction. The filing does not show why the insider traded or why the company acted.