3 transactions on file, per SEC Form 4 filings.
See ONTO superinvestor activity →Chen Shirley
Senior Vice President of Custo · 2026-09-02
Tax withholding
$386K
ROBERTS BRIAN K
Chief Financial Officer · 2026-09-02
Tax withholding
$824K
Lynch Susan D
director · 2026-08-21
Sold
$302K
Each row links to the underlying SEC filing. Sells are shown for transparency, not as a signal — see the insider trading article for why.
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