Onto Innovation Inc. (ONTO) Insider Trading
Directors, officers and holders of more than 10% of ONTO report their trades in its stock on SEC Form 4, within two business days. Each row below is one Form 4 transaction line. The one-letter code says what kind of transaction it was: only P (purchase) and S (sale) are open-market or private trades; awards, option exercises, tax withholding and gifts carry other codes.
Recent Form 4 transactions
The 50 most recent of 135 transactions on file: 0 with code P, 2 with code S and 48 with other codes.
| Date | Insider | Title | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 29, 2026 | MILLER DAVID BRIAN | Director | S Sale | 2,000 | $300.00 | $600,000 |
| Sep 2, 2026 | Chen Shirley | Senior Vice President of Custo | F Tax Payment | 1,516 | $254.55 | $385,898 |
| Sep 2, 2026 | ROBERTS BRIAN K | Chief Financial Officer | F Tax Payment | 3,239 | $254.55 | $824,487 |
| Aug 21, 2026 | Lynch Susan D | Director | S Sale | 1,000 | $302.30 | $302,300 |
| May 20, 2026 | SCHWARTZ STEPHEN S | Director | A Award | 761 | Not measured | Not measured |
| May 20, 2026 | MILLER DAVID BRIAN | Director | A Award | 761 | Not measured | Not measured |
| May 20, 2026 | Su May | Director | A Award | 761 | Not measured | Not measured |
| May 20, 2026 | Kelley Stephen Douglas | Director | A Award | 761 | Not measured | Not measured |
| May 20, 2026 | SEAMS CHRISTOPHER A | Director | A Award | 761 | Not measured | Not measured |
| May 20, 2026 | Lynch Susan D | Director | A Award | 761 | Not measured | Not measured |
| May 15, 2026 | YALDAEI RAMIL | Chief Operating Officer | F Tax Payment | 218 | $271.77 | $59,246 |
| May 15, 2026 | YALDAEI RAMIL | Chief Operating Officer | F Tax Payment | 625 | $271.77 | $169,856 |
| May 15, 2026 | OH Yoon Ah | SVP, Gen Counsel & Corp Sec | F Tax Payment | 530 | $271.77 | $144,038 |
| Mar 3, 2026 | Plisinski Michael P | Chief Executive Officer | F Tax Payment | 3,742 | $207.50 | $776,465 |
| Mar 3, 2026 | Dolev Ido | EVP, Prod Solutions Grp | F Tax Payment | 819 | $207.50 | $169,943 |
| Mar 3, 2026 | YALDAEI RAMIL | Chief Operating Officer | F Tax Payment | 615 | $207.50 | $127,613 |
| Mar 3, 2026 | OH Yoon Ah | SVP, Gen Counsel & Corp Sec | F Tax Payment | 417 | $207.50 | $86,528 |
| Mar 2, 2026 | Chen Shirley | Senior Vice President of Custo | A Award | 1,261 | Not measured | Not measured |
| Mar 2, 2026 | Plisinski Michael P | Chief Executive Officer | A Award | 14,479 | Not measured | Not measured |
| Mar 2, 2026 | YALDAEI RAMIL | Chief Operating Officer | A Award | 7,683 | Not measured | Not measured |
| Mar 2, 2026 | ROBERTS BRIAN K | Chief Financial Officer | A Award | 1,548 | Not measured | Not measured |
| Mar 2, 2026 | YALDAEI RAMIL | Chief Operating Officer | A Award | 1,548 | Not measured | Not measured |
| Mar 2, 2026 | Plisinski Michael P | Chief Executive Officer | A Award | 7,239 | Not measured | Not measured |
| Mar 2, 2026 | Plisinski Michael P | Chief Executive Officer | A Award | 7,239 | Not measured | Not measured |
| Mar 2, 2026 | ROBERTS BRIAN K | Chief Financial Officer | A Award | 3,096 | Not measured | Not measured |
| Mar 2, 2026 | OH Yoon Ah | SVP, Gen Counsel & Corp Sec | A Award | 1,204 | Not measured | Not measured |
| Mar 2, 2026 | ROBERTS BRIAN K | Chief Financial Officer | A Award | 1,548 | Not measured | Not measured |
| Mar 2, 2026 | OH Yoon Ah | SVP, Gen Counsel & Corp Sec | A Award | 2,408 | Not measured | Not measured |
| Mar 2, 2026 | Dolev Ido | EVP, Prod Solutions Grp | A Award | 1,720 | Not measured | Not measured |
| Mar 2, 2026 | Chen Shirley | Senior Vice President of Custo | A Award | 1,261 | Not measured | Not measured |
| Mar 2, 2026 | Dolev Ido | EVP, Prod Solutions Grp | A Award | 3,440 | Not measured | Not measured |
| Mar 2, 2026 | YALDAEI RAMIL | Chief Operating Officer | A Award | 1,548 | Not measured | Not measured |
| Mar 2, 2026 | Chen Shirley | Senior Vice President of Custo | A Award | 2,523 | Not measured | Not measured |
| Mar 2, 2026 | Dolev Ido | EVP, Prod Solutions Grp | A Award | 1,720 | Not measured | Not measured |
| Mar 2, 2026 | OH Yoon Ah | SVP, Gen Counsel & Corp Sec | A Award | 1,204 | Not measured | Not measured |
| Mar 1, 2026 | YALDAEI RAMIL | Chief Operating Officer | F Tax Payment | 347 | $215.89 | $74,914 |
| Mar 1, 2026 | YALDAEI RAMIL | Chief Operating Officer | M Exercise | 649 | Not measured | Not measured |
| Mar 1, 2026 | YALDAEI RAMIL | Chief Operating Officer | F Tax Payment | 276 | $215.89 | $59,586 |
| Mar 1, 2026 | OH Yoon Ah | SVP, Gen Counsel & Corp Sec | M Exercise | 941 | Not measured | Not measured |
| Mar 1, 2026 | OH Yoon Ah | SVP, Gen Counsel & Corp Sec | F Tax Payment | 267 | $215.89 | $57,643 |
| Mar 1, 2026 | OH Yoon Ah | SVP, Gen Counsel & Corp Sec | M Exercise | 724 | Not measured | Not measured |
| Mar 1, 2026 | OH Yoon Ah | SVP, Gen Counsel & Corp Sec | F Tax Payment | 307 | $215.89 | $66,278 |
| Mar 1, 2026 | YALDAEI RAMIL | Chief Operating Officer | M Exercise | 844 | Not measured | Not measured |
| Mar 1, 2026 | Plisinski Michael P | Chief Executive Officer | M Exercise | 4,597 | Not measured | Not measured |
| Mar 1, 2026 | Plisinski Michael P | Chief Executive Officer | F Tax Payment | 2,222 | $215.89 | $479,708 |
| Mar 1, 2026 | Plisinski Michael P | Chief Executive Officer | F Tax Payment | 1,925 | $215.89 | $415,588 |
| Mar 1, 2026 | Plisinski Michael P | Chief Executive Officer | M Exercise | 5,971 | Not measured | Not measured |
| Feb 14, 2026 | Plisinski Michael P | Chief Executive Officer | F Tax Payment | 8,919 | $217.23 | $1,937,474 |
| Feb 14, 2026 | Plisinski Michael P | Chief Executive Officer | M Exercise | 18,445 | Not measured | Not measured |
| Feb 14, 2026 | Plisinski Michael P | Chief Executive Officer | M Exercise | 11,824 | Not measured | Not measured |
The full Form 4 history is on the ONTO company page (Insider Trades card, View all).
Questions about this data
Which insider transactions are open-market trades?
Code P (open market or private purchase) and code S (open market or private sale). Code F is shares withheld to pay tax on vesting stock, A is an award from the company, M and X are option exercises and G is a gift. None of those is the insider choosing to buy or sell in the market.
How quickly are insider trades reported?
A Form 4 is due before the end of the second business day after the trade. The date shown is the transaction date from the form.
Who has to file Form 4?
Officers, directors and beneficial owners of more than 10% of a class of the company’s registered equity, under Section 16 of the Securities Exchange Act.
Look up any code in the Form 4 transaction code reference, or read Form 4 codes explained.