Quick Takeaways
- Michael P. Plisinski has 1 issuer position tracked on this page.
- Estimated disclosed ownership value: $39,062,487.
- Recent insider filing activity is available below.
- Info
- Insider Ownership
Insider Trading & Ownership of Michael P. Plisinski
- Location
- Wilmington, MA
- Summary
- The estimated net worth of Michael P. Plisinski is at least $39,062,487 dollars as of 04 Mar 2026. Michael P. Plisinski is the Chief Executive Officer, Director of ONTO INNOVATION INC. and owns shares of ONTO INNOVATION INC. (ONTO) stock worth about $39.06M.
- Signature
- By: Eric French For: Michael Plisinski
- All Insider Reports
- All Insider Reports
Follow Filing Activity
Follow Michael P. Plisinski and return when a new Insider Trading filing appears.
This tracks SEC filing changes for this page using existing product update flows.
What Changed
- Largest disclosed position: ONTO INNOVATION INC. ($39,062,487).
- Past-year value change for that position: .
Why This Matters
- This page translates Forms 3/4/5 into a quick ownership context before you inspect each transaction row.
- You can cross-check role, issuer, and filing chronology directly against the SEC source.
Official SEC Source
Filed on Form 4
Insider ownership context is sourced from SEC Forms 3, 4, and 5.
See Original FilingOwnership of Michael P. Plisinski
| Symbol | Company | Relationship | Holdings Value | Past Year Net Change | Change % | Report Period |
|---|---|---|---|---|---|---|
| ONTO | ONTO INNOVATION INC. | Chief Executive Officer, Director | $39,062,487 | 02 Mar 2026 |
Insider Transactions Reported by Michael P. Plisinski:
| Sym | Company | Class | Transaction | % | Value $ | * Price $ | Shares | Shares After | Date | Ownership |
|---|
* An asterisk sign (*) next to the price indicates that the price is likely invalid.