Summary
Latest filing:
May Su is Director of ONTO INNOVATION INC. (ONTO). 1 SEC Form 4 filing on record, dated 22 May 2026.
Recent transactions
1The latest SEC Form 4 transaction reported by May Su.
Trading pattern
InsiderAlpha's records for May Su go back to 2026: 1 primary Form 4 filing, an average of 1.0 per year. No recorded transaction carries a Rule 10b5-1 plan flag. An absent flag does not establish whether a transaction was pre-arranged or discretionary.
Other insiders active in the same stocks
Insiders who reported open-market trades in the last 12 months at the companies May Su files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- David Brian Miller - $600K in ONTO purchases and sales in the last 12 months
- Susan D. Lynch - $302K in ONTO purchases and sales in the last 12 months
More insiders (A-Z)
Browse nearby insider profiles in alphabetical order.
Frequently asked questions
Who is May Su?
May Su is a corporate insider, tracked as Director of ONTO INNOVATION INC. (ONTO). InsiderAlpha holds 1 primary Form 4 filing for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
When did May Su last file a Form 4?
The only primary Form 4 on record is dated 22 May 2026.