Insider txns (12m)
10
Stock / equity
ON ON SEMICONDUCTOR CORP
- Company
- ON SEMICONDUCTOR CORP
- Security
- Equity
- Size, estimated from filings
- Large cap ($10B – $200B)
- Insiders on record
- 7
- Members of Congress
- 1
- Latest trade on record
- October 2, 2026
ON (ON SEMICONDUCTOR CORP) has 10 disclosed insider transactions from 7 insiders in the last 12 months (0 open-market buys, 2 sales, about $1.3M at reported prices) and 1 congressional trade from 1 member of Congress. The most recent disclosure was filed October 12, 2026.
Open-market buys / sales
0 / 2
Congress trades (12m)
1
Distinct filers (12m)
8
Share price
Price and chart by TradingView for ON SEMICONDUCTOR CORP. US share prices here are delayed, not real-time. The trade records on this page come from government filings, not from this chart.
ON in charts
Who is trading this stock
Which people account for the buying and selling over the last 12 months?
BoughtSold
2 people account for the disclosed buying and selling in ON over the last 12 months; the most active is GOPALSWAMY SUDHIR with $1.3M.
Insider holdings over time
Is an insider building or unwinding a position? Shares held directly after each filing.
MASCARENAS PAUL ANTHONYGOPALSWAMY SUDHIR
MASCARENAS PAUL ANTHONY reported 57,716 shares held after the latest filing, against 57,474 at the first on record.
Insiders trading ON
Everyone who filed a Form 4 for this ticker, by number of rows on record. "Bought" and "sold" count open-market purchases (code P) and sales only; awards, option exercises and shares withheld for tax are in the row count but not in those two columns.
| Insider | Role | Rows | Bought | Sold | Value bought | Value sold | Latest |
|---|---|---|---|---|---|---|---|
| MASCARENAS PAUL ANTHONY | Director | 3 | 0 | 0 | — | — | October 2, 2026 |
| GOPALSWAMY SUDHIR | Group President, AMG & ISG | 2 | 0 | 2 | — | $1.3M | October 1, 2026 |
| CARTER SUSAN K | Director | 1 | 0 | 0 | — | — | May 14, 2026 |
| Deitrich Thomas | Director | 1 | 0 | 0 | — | — | May 14, 2026 |
| KIDDOO BRUCE E | Director | 1 | 0 | 0 | — | — | May 14, 2026 |
| WATERS GREGORY L | Director | 1 | 0 | 0 | — | — | May 14, 2026 |
| Yan Christine Y | Director | 1 | 0 | 0 | — | — | May 14, 2026 |
What kind of transactions these are 3 Form 4 codes
| Code | Meaning | Rows | Shares | Value at reported prices |
|---|---|---|---|---|
| A | Grant or award | 8 | 12,158 | $21K |
| F | Shares withheld for tax | 1 | 470 | $60K |
| S | Open-market sale | 1 | 15,578 | $1.2M |
What each code means: Form 4 transaction codes.
Members of Congress trading ON
Members whose periodic transaction reports name this ticker. Amounts are the sums of the ranges as filed.
| Member | Seat | Trades | Bought | Sold | Range as filed | Latest |
|---|---|---|---|---|---|---|
| Gilbert Ray Cisneros, Jr. | Representative (CA, District 31), Democrat | 1 | 1 | 0 | $15K–$50K | September 28, 2026 |
Insider transactions
| Filer | Side | Trade date | Disclosed | Lag | Shares | Price | Value | Flags | Source | Share |
|---|---|---|---|---|---|---|---|---|---|---|
| GOPALSWAMY SUDHIR | Sell S | October 1, 2026 | October 2, 2026 | 1d | 15,578 | $80 | $1.2M | 10b5-1 plan | Form 4 ↗ | |
| MASCARENAS PAUL ANTHONY | Other A | October 2, 2026 | October 2, 2026 | 0d | 126 | $85 | $11K | Form 4 ↗ | ||
| MASCARENAS PAUL ANTHONY | Other A | July 2, 2026 | July 2, 2026 | 0d | 116 | $91 | $11K | Form 4 ↗ | ||
| GOPALSWAMY SUDHIR | Sell F | May 26, 2026 | May 27, 2026 | 1d | 470 | $127 | $60K | Form 4 ↗ | ||
| MASCARENAS PAUL ANTHONY | Other A | May 14, 2026 | May 18, 2026 | 4d | 1,986 | — | — | Form 4 ↗ | ||
| KIDDOO BRUCE E | Other A | May 14, 2026 | May 18, 2026 | 4d | 1,986 | — | — | Form 4 ↗ | ||
| Yan Christine Y | Other A | May 14, 2026 | May 18, 2026 | 4d | 1,986 | — | — | Form 4 ↗ | ||
| CARTER SUSAN K | Other A | May 14, 2026 | May 18, 2026 | 4d | 1,986 | — | — | Form 4 ↗ | ||
| WATERS GREGORY L | Other A | May 14, 2026 | May 18, 2026 | 4d | 1,986 | — | — | Form 4 ↗ | ||
| Deitrich Thomas | Other A | May 14, 2026 | May 18, 2026 | 4d | 1,986 | — | — | Form 4 ↗ |
Congressional trades
| Filer | Side | Trade date | Disclosed | Lag | Shares | Price | Value | Flags | Source | Share |
|---|---|---|---|---|---|---|---|---|---|---|
| Gilbert Ray Cisneros, Jr. | Buy | September 28, 2026 | October 12, 2026 | 14d | — | — | $15K–$50K | House PTR ↗ |
Related stocks
Tickers traded by the same people who traded ON, by number of filers in common. It shows overlap in public filings and nothing else.
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- ANET Arista Networks, Inc. Common Stock 1 filer in common
Guides for this page
- What is SEC Form 4? Who files: officers, directors and owners of more than 10% of a class of the company's shares.
- Form 4 transaction codes P = purchase. S = sale. These are the two market trades.
- Insider buying vs insider selling Selling outweighs buying by a wide margin in normal times.
- How to read a congressional trade report Owner tells you whose asset it was: the member, the spouse, a dependent child, or held jointly.
- Why congressional trade amounts are ranges There are ten ranges; the lowest is $1,001–$15,000 and the highest is over $50,000,000.
Sources and method
| Source | Filings | Rows | First filed | Newest filed | Read the originals |
|---|---|---|---|---|---|
| House Clerk, periodic transaction reports | 1 | 1 | October 12, 2026 | October 12, 2026 | House Clerk search |
| SEC EDGAR, Form 4 | 10 | 10 | May 18, 2026 | October 2, 2026 | Form 4 list on EDGAR |
Site built October 22, 2026. Every row in the tables above links to its own filing. To quote a figure, use the Cite button at the top of the page; see how to cite and reuse.
Insider rows are Form 4 filings for this issuer from SEC EDGAR; congressional rows are periodic transaction reports parsed from the House Clerk and the Senate eFD. Values use the reported price for Form 4 and the disclosed range for Congress. See methodology and corrections.
Not investment advice. Disclosures are shown as filed and may lag the trade or be amended. No recommendation is made or implied.