Company / CIK 0001097864
ON SEMICONDUCTOR CORP
- Ticker
- ON
- Size, estimated from filings
- Large cap ($10B – $200B)
- Insiders on file
- 7
- Members of Congress who traded it
- 1
- Federal contracts on record
- none matched
- Lobbying filings on record
- none matched
- SEC filings
- EDGAR ↗
- Latest trade on record
- October 2, 2026
ON SEMICONDUCTOR CORP (ON) has 7 insiders on file who disclosed 10 transactions in the last 12 months (0 open-market buys, 2 sales, about $1.3M at reported prices), and 1 congressional trade in its stock is on record. No federal contract award that started in the last 180 days was found for a recipient with exactly this name; no lobbying filing names it as client this year.
ON SEMICONDUCTOR CORP in charts
Who is trading this stock
Which people account for the buying and selling over the last 12 months?
2 people account for the disclosed buying and selling in ON SEMICONDUCTOR CORP over the last 12 months; the most active is GOPALSWAMY SUDHIR with $1.3M.
Insiders
| Name | Role | Rows | Bought | Sold | Last filed |
|---|---|---|---|---|---|
| MASCARENAS PAUL ANTHONY | Director | 3 | 0 | 0 | October 2, 2026 |
| GOPALSWAMY SUDHIR | Group President, AMG & ISG | 2 | 0 | 2 | October 2, 2026 |
| CARTER SUSAN K | Director | 1 | 0 | 0 | September 24, 2026 |
| KIDDOO BRUCE E | Director | 1 | 0 | 0 | September 21, 2026 |
| Deitrich Thomas | Director | 1 | 0 | 0 | May 18, 2026 |
| WATERS GREGORY L | Director | 1 | 0 | 0 | May 18, 2026 |
| Yan Christine Y | Director | 1 | 0 | 0 | May 18, 2026 |
Rows are this company's Form 4 rows for each person. "Bought" and "sold" count open-market purchases (code P) and sales only. More in insider buying and insider selling.
Members of Congress who traded ON
From periodic transaction reports that name the company's stock. Amounts are the sums of the ranges as filed. Every row is on the ON page.
| 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 | Security | Side | Trade date | Disclosed | Lag | Shares | Price | Value | Flags | Source | Share |
|---|---|---|---|---|---|---|---|---|---|---|---|
| GOPALSWAMY SUDHIR | ON | Sell S | October 1, 2026 | October 2, 2026 | 1d | 15,578 | $80 | $1.2M | 10b5-1 plan | Form 4 ↗ | |
| MASCARENAS PAUL ANTHONY | ON | Other A | October 2, 2026 | October 2, 2026 | 0d | 126 | $85 | $11K | Form 4 ↗ | ||
| MASCARENAS PAUL ANTHONY | ON | Other A | July 2, 2026 | July 2, 2026 | 0d | 116 | $91 | $11K | Form 4 ↗ | ||
| GOPALSWAMY SUDHIR | ON | Sell F | May 26, 2026 | May 27, 2026 | 1d | 470 | $127 | $60K | Form 4 ↗ | ||
| MASCARENAS PAUL ANTHONY | ON | Other A | May 14, 2026 | May 18, 2026 | 4d | 1,986 | — | — | Form 4 ↗ | ||
| KIDDOO BRUCE E | ON | Other A | May 14, 2026 | May 18, 2026 | 4d | 1,986 | — | — | Form 4 ↗ | ||
| Yan Christine Y | ON | Other A | May 14, 2026 | May 18, 2026 | 4d | 1,986 | — | — | Form 4 ↗ | ||
| CARTER SUSAN K | ON | Other A | May 14, 2026 | May 18, 2026 | 4d | 1,986 | — | — | Form 4 ↗ | ||
| WATERS GREGORY L | ON | Other A | May 14, 2026 | May 18, 2026 | 4d | 1,986 | — | — | Form 4 ↗ | ||
| Deitrich Thomas | ON | Other A | May 14, 2026 | May 18, 2026 | 4d | 1,986 | — | — | Form 4 ↗ |
Federal contracts (USAspending, awards started in the last 180 days)
No contract award starting in the last 180 days was found for a recipient named exactly "ON SEMICONDUCTOR CORP". Subsidiaries and differently-spelled recipients are not matched — search contracts.
Lobbying (Senate LDA, as client)
No LDA filing posted since October 2025 names "ON SEMICONDUCTOR CORP" as the client. Filings under a subsidiary or trade-association name are not matched — search lobbying.
Related companies
Companies whose stock was traded by the same people who traded ON, by number of filers in common. It shows overlap in public filings and nothing else.
- WESTERN DIGITAL CORP WDC 2 filers in common
- Amcor plc AMCR 2 filers in common
- CrowdStrike Holdings, Inc. CRWD 1 filer in common
- Cloudflare, Inc. NET 1 filer in common
- Uber Technologies, Inc UBER 1 filer in common
- Datadog, Inc. DDOG 1 filer in common
- CARVANA CO. CVNA 1 filer in common
- Arista Networks, Inc. ANET 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.
- Insider buying vs insider selling Selling outweighs buying by a wide margin in normal times.
- What disclosure data cannot tell you Filings are late by design: up to 45 days for Congress, two business days for insiders.
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.
Insiders and their transactions come from SEC EDGAR Form 4 filings for this issuer. Contracts and lobbying are matched by exact normalized name (suffixes like Inc./Corp. ignored) to USAspending recipients and LDA clients — a conservative match that misses subsidiaries on purpose. See methodology and corrections.
Not investment advice. Public records shown as filed; no recommendation is made or implied.