LYTIR

Company · ON

ON Semiconductor Corporation

Name as listed on its exchange; filed with the SEC as ON SEMICONDUCTOR CORP.

Nasdaq's symbol directory lists ON on Nasdaq as “ON Semiconductor Corporation - Common Stock”.

In the 12 months to Nov 8, 2026: insiders sold on 1 occasion ($1.2M); 1 planned-sale notice; 1 filing by holders of 5% or more; 1 congressional trade disclosure; 6 company reports (Form 8-K, since May 26, 2026).

All insider filings at the SEC

Insider trades · SEC Form 4

Those inside the hall

Open-market purchases and sales only. Legs one person filed for one day are combined.

Who traded

  1. GOPALSWAMY SUDHIR, Group President, AMG & ISG sold on 1 day all under a 10b5-1 plan latest Oct 1, 2026 sold $1.2M
Every trade (1)
  1. SELLGOPALSWAMY SUDHIR, Group President, AMG & ISG sold Oct 1, 2026 15,578 shares 10b5-1 plan (scheduled) filing $1.2M

Planned sales · SEC Form 144

Notice given

A Form 144 is filed before an insider sells restricted stock. It states an intent; the sale, if it happens, appears later on a Form 4. Every recent notice

  1. GOPALSWAMY SUDHIR filed Oct 1, 2026 Officer 15,578 shares planned sale date 10/01/2026 filing $1.2M

Large holders · SEC Schedules 13D and 13G

Five percent and over

Anyone who comes to hold more than 5% of a company's voting shares must tell the SEC. A Schedule 13D is filed by a holder who may seek to influence the company; a 13G by one who states it is a passive investor. An amendment updates an earlier filing, and a stake reported as 0% means the holder says it has sold all, or nearly all, of its shares. Every recent 13D and 13G

  1. FMR LLC filed Oct 7, 2026 Schedule 13G/A passive 31,915,449 shares filing 8.2%

Congress · STOCK Act

The Althing

Periodic transaction reports. Amounts are the ranges members report; the trade date is when it happened, the report can come up to 45 days later.

  1. Gilbert Cisneros (D-CA31): Purchase Sep 28, 2026 reported Oct 12, 2026 one of 57 trades the member reported that day House Stocks (including ADRs) $15,001 - $50,000

Company reports · SEC Form 8-K

In its own words

Current reports the company filed with the SEC; most items are due within four business days of the event. Each line lists the report's items by the SEC's own titles; the filing says what happened. Reports collected since May 26, 2026; every 8-K at the SEC.

  1. Entry into a material definitive agreement; Regulation FD disclosure filing Nov 2, 2026
  2. Results of operations and financial condition filing Nov 2, 2026
  3. Entry into a material definitive agreement; Other events filing Oct 1, 2026
  4. Other events filing Aug 13, 2026
  5. Results of operations and financial condition filing Aug 3, 2026
  6. Entry into a material definitive agreement; Other events filing Jun 25, 2026

Sources: SEC EDGAR (Forms 4, 144 and 8-K) and STOCK Act periodic transaction reports. Filings can be late, amended or wrong at the source; see methodology.