YALDAEI RAMIL 4

What Happened Yaldaei Ramil, Chief Operating Officer of ONTO Innovation Inc., had a total of 843 shares withheld by the issuer to satisfy tax withholding obligations related to vested restricted stock units. The filing shows two withholding disposals on May 15, 2026: 218 shares at $271.77 each ($59,246) and 625 shares at $271.77 each ($169,856), totaling about $229,102. This is a routine tax-withholding disposition (Form 4 code F), not an open-market sale.

Key Details

• Transaction date: May 15, 2026; Filing date: May 18, 2026 (no late filing indicated).
• Prices reported: $271.77 per share for both entries.
• Shares withheld/disposed: 218 and 625 (total 843).
• Total value withheld: approximately $229,102.
• Shares owned after transaction: not disclosed in this filing.
• Footnote: F1 — shares were withheld by the issuer to satisfy tax withholding on vested RSUs/PSUs.

Context This transaction is a cashless tax-withholding event associated with equity compensation vesting, a routine administrative step that does not necessarily signal the insider's view of the company's prospects. It differs from an open-market sale or a purchase because shares were surrendered to cover taxes rather than sold for proceeds to the insider.