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On Semiconductor Corp (NASDAQ:ON)
US · Delayed Price · Currency is USD
Also listed: 0KC4.LTechnology · Semiconductors
74.51+2.26 (+3.13%)
Insider Score
––Not scored
ON Insider Score
Insiders filed in the last 90 days, but none of those trades qualified for scoring — round-trip buys and filings whose price is far off the market are excluded.
ON Stock Insider Trading Activity
ON stock’s insider trading shows 1 sale on the open market for an estimated $1.25M by company insiders over the last 6 months.
Not enough price history.
Insider Trading Activity (Form 4 Filings)
An insider trade occurs when an individual that has non-public information about a company buys or sells shares of that company’s stock. Examples of insiders include a company’s executive officers (CEO, CFO, COO), its board of directors, and its major shareholders. Insiders are required to submit their trading activity to the SEC through Form 4 filings.
Scored window · last 90 days0 qualifying buys0 insiders$0 bought— these are the numbers in the rankings table; the full history below shows every filing (buys, sells and older activity).
| Insider | Action | Shares | Avg Cost | Total | Δ Holdings | Held After | Date | Grade | Form 4 |
|---|---|---|---|---|---|---|---|---|---|
| MASCARENAS PAUL ANTHONY Director | Award | 126 | $84.89 | $10.70K | 0.2% | 57,716 | Oct 2, 2026 | — | Form 4 |
| GOPALSWAMY SUDHIR Other | Sell | 15,578 | $80.00 | $1.25M | 9.0% | 158,177 | Oct 1, 2026 | — | Form 4 |
| MASCARENAS PAUL ANTHONY Director | Award | 116 | $91.22 | $10.58K | 0.2% | 57,590 | Jul 2, 2026 | — | Form 4 |
| GOPALSWAMY SUDHIR Other | Tax withheld | 470 | $127.00 | $59.69K | 0.3% | 173,588 | May 26, 2026 | — | Form 4 |
| KIDDOO BRUCE E Director | Award | 1,986 | — | — | 11.5% | 19,216 | May 14, 2026 | — | Form 4 |
| MASCARENAS PAUL ANTHONY Director | Award | 1,986 | — | — | 3.6% | 57,474 | May 14, 2026 | — | Form 4 |
| Yan Christine Y Director | Award | 1,986 | — | — | 4.3% | 48,655 | May 14, 2026 | — | Form 4 |
| Deitrich Thomas Director | Award | 1,986 | — | — | 8.2% | 26,060 | May 14, 2026 | — | Form 4 |
| WATERS GREGORY L Director | Award | 1,986 | — | — | 8.8% | 24,524 | May 14, 2026 | — | Form 4 |
| CARTER SUSAN K Director | Award | 1,986 | — | — | 8.4% | 25,638 | May 14, 2026 | — | Form 4 |
| Thad Trent CFO | Sell | 30,000 | $100.00 | $3.00M | 10.0% | 271,194 | Apr 24, 2026 | — | Form 4 |
| Thad Trent CFO | Sell | 30,000 | $93.00 | $2.79M | 9.1% | 301,194 | Apr 23, 2026 | — | Form 4 |
| Thad Trent CFO | Sell | 30,000 | $80.00 | $2.40M | 8.3% | 331,194 | Apr 16, 2026 | — | Form 4 |
| MASCARENAS PAUL ANTHONY Director | Award | 168 | $62.19 | $10.45K | 0.3% | 55,488 | Apr 3, 2026 | — | Form 4 |
| GOPALSWAMY SUDHIR Other | Sell | 6,114 | $58.67 | $358.71K | 3.4% | 173,943 | Mar 13, 2026 | — | Form 4 |
| Thad Trent CFO | Tax withheld | 10,383 | $69.11 | $717.57K | 2.8% | 361,079 | Feb 21, 2026 | — | Form 4 |
| El-Khoury Hassane CEO | Tax withheld | 36,802 | $69.11 | $2.54M | 3.4% | 1,054,123 | Feb 21, 2026 | — | Form 4 |
| GOPALSWAMY SUDHIR Other | Tax withheld | 9,583 | $69.11 | $662.28K | 5.1% | 180,057 | Feb 21, 2026 | — | Form 4 |
| KEETON SIMON Other | Tax withheld | 7,788 | $69.11 | $538.23K | 3.5% | 214,123 | Feb 21, 2026 | — | Form 4 |
| Thad Trent CFO | Tax withheld | 4,173 | $69.11 | $288.40K | 1.1% | 371,462 | Feb 20, 2026 | — | Form 4 |
| KEETON SIMON Other | Award | 26,046 | — | — | 13.1% | 225,041 | Feb 20, 2026 | — | Form 4 |
| KEETON SIMON Other | Tax withheld | 3,130 | $69.11 | $216.31K | 1.4% | 221,911 | Feb 20, 2026 | — | Form 4 |
| El-Khoury Hassane CEO | Award | 75,315 | — | — | 7.4% | 1,090,925 | Feb 20, 2026 | — | Form 4 |
| GOPALSWAMY SUDHIR Other | Award | 31,834 | — | — | 20.0% | 191,095 | Feb 20, 2026 | — | Form 4 |
What these mean— the action is the SEC’s own Form 4 transaction code. Only a buy or a sell is an open-market trade; the rest are transfers, awards and exercises, which is why they carry no price.
- Sell (S) — Open-market or private sale
- Award (A) — Grant or award from the company, not a purchase
- Tax withheld (F) — Shares withheld to pay tax or an exercise price
Disclaimer — Informational only — not investment advice. Insider transaction data is sourced from SEC Form 4 filings; market data from public feeds and may be delayed. The Insider Score is a proprietary score for research purposes and does not predict future performance. Always do your own research.