On Semiconductor ON Insider Ownership

NASDAQ ON

$73.12 +1.10 (+1.53%)

At close: Oct 19, 2026 · 4:00 PM EDT

Insider Holdings by Owner

2.59Mn Shares

Insider Ownership Statistics

as of 30 Sep, 2026

Insider Ownership

0.517%

▲+0.0050% pp QoQ

Shares Held by Insiders

2.02Mn

filed for Sep 2026

▲+0.01% QoQ

Shares Outstanding

390.30Mn

390,300,000 shares

Direct Holdings

2.00Mn

Indirect: 17.00K

Net Shares Traded (QoQ)

+116

net buying in Sep 2026

Insiders Holding Shares

with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Insiders

Bought Sold

Latest quarter —

Net over range —

Buying quarters —

Insider Ownership Summary

Updated Oct 8, 2026

Over the past 12 months, On Semiconductor insiders sold $21.31 million of stock on the open market (281.55K shares) and made no open-market purchases.

A count shows 4 insiders selling ON stock on the open market over the past 12 months and none buying.
Trent Thad (Executive VP & CFO) sold the most On Semiconductor stock on the open market over the past 12 months, $13.56 million (170K shares), most recently on April 24, 2026.
Sudhir Gopalswamy (Group President, Amg & Isg) made the most recent open-market trade by an insider of On Semiconductor, a sale of 15.58K shares for $1.25 million on October 1, 2026.
Outside the open market, On Semiconductor insiders received 354.38K shares in stock awards, gave up 174.48K shares to cover taxes or exercise prices and gave away 3.57K shares as gifts over the past 12 months.
Business Quant data shows On Semiconductor insiders holding 2Mn shares in total in their latest Form 4 filings, or 0.51% of the 390.3Mn shares outstanding; that total is down 0.75% from 2.02Mn shares at the end of Q2 2026 and down 15.30% from 2.36Mn shares at the end of Q3 2025.
Indirect holdings, through trusts, partnerships, family members and other entities, make up 0.85% (17K shares) of On Semiconductor's insider total, with the other 99.15% (1.98Mn shares) held directly.
Per Business Quant, 11 insiders of ON hold shares, counting officers, directors and 10% owners who have filed a Form 4 in the past two years.
ON's largest insider holders by reported holdings are Hassane El-Khoury (CEO & President, 1.05Mn shares), Trent Thad (Executive VP & CFO, 271.19K shares) and Simon Keeton (Group President, PSG, 214.12K shares).
Hassane El-Khoury alone accounts for 52.68% of the shares held by On Semiconductor insiders.
A total of 31 Form 4 filings with transactions in On Semiconductor stock were made over the past 12 months, by 10 insiders.
The insider data for ON reflects Form 4 filings through October 2, 2026.

Form 4 Holdings

Insiders Holding ON

Insiders 18

Shares held 2.59Mn

Of outstanding 0.665%

#	Insider	Position	Direct	Total	Share of Insiders	Last Filed
1	Hassane El-Khoury	Ceo President	1,054,123	1,054,123	40.6%	24 Feb, 2026
2	Trent Thad	Exec Vp Cfo	271,194	271,194	10.5%	27 Apr, 2026
3	Simon Keeton	Group President, Psg	214,123	214,123	8.3%	24 Feb, 2026
4	Atsushi Abe	Director	176,886	176,886	6.8%	17 May, 2024
5	Vince Craig Hopkin	Evp Gm, Asg	169,073	169,073	6.5%	12 May, 2022
6	Sudhir Gopalswamy	Group President, Amg Isg	158,177	158,177	6.1%	02 Oct, 2026
7	Ross Jatou	Svp Gm, Isg	112,730	112,730	4.3%	22 Feb, 2024
8	Alan Campbell	Director	84,689	84,689	3.3%	12 Jun, 2025
9	Robert Tong	Svp Gm, Asg	60,143	60,143	2.3%	06 Mar, 2023
10	Paul Anthony Mascarenas	Director	57,716	57,716	2.2%	02 Oct, 2026
11	Gilles Delfassy	Director	55,667	55,667	2.1%	27 May, 2022
12	Christine Y Yan	Director	48,655	48,655	1.9%	18 May, 2026
13	Bernard Raymond Jr Colpitts	Chief Accounting Officer	31,045	31,045	1.2%	13 Sep, 2023
14	Thomas Deitrich	Director	26,060	26,060	1.0%	18 May, 2026
15	Susan K Carter	Director	25,638	25,638	1.0%	18 May, 2026
16	Gregory L Waters	Director	24,524	24,524	0.9%	18 May, 2026
17	Bruce E Kiddoo	Director	19,216	19,216	0.7%	18 May, 2026
18	Christina Lampe-Onnerud	Director	4,684	4,684	0.2%	17 May, 2024

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

2,601 Insider Transactions

Source SEC Form 4

Latest quarter Sep 2026

Date	Insider	Position	Transaction	Shares	Price	Value	Shares Held After	Ownership
02 Oct, 2026	Paul Anthony Mascarenas	Director	Acquired A	126	$84.89	$10.70K	57,716	Direct
01 Oct, 2026	Sudhir Gopalswamy	Group President, Amg Isg	Disposed S	15,578	$80.00	$1.25Mn	158,177	Direct
02 Jul, 2026	Paul Anthony Mascarenas	Director	Acquired A	116	$91.22	$10.58K	57,590	Direct
26 May, 2026	Sudhir Gopalswamy	Group President, Amg Isg	Disposed F	470	$127.00	$59.69K	173,588	Direct
14 May, 2026	Gregory L Waters	Director	Acquired A	1,986	$0.00	$0	24,524	Direct
14 May, 2026	Christine Y Yan	Director	Acquired A	1,986	$0.00	$0	48,655	Direct
14 May, 2026	Thomas Deitrich	Director	Acquired A	1,986	$0.00	$0	26,060	Direct
14 May, 2026	Bruce E Kiddoo	Director	Acquired A	1,986	$0.00	$0	19,216	Direct
14 May, 2026	Susan K Carter	Director	Acquired A	1,986	$0.00	$0	25,638	Direct
14 May, 2026	Paul Anthony Mascarenas	Director	Acquired A	1,986	$0.00	$0	57,474	Direct
23 Apr, 2026	Trent Thad	Exec Vp Cfo	Disposed S	30,000	$93.00	$2.79Mn	301,194	Direct
24 Apr, 2026	Trent Thad	Exec Vp Cfo	Disposed S	30,000	$100.00	$3.00Mn	271,194	Direct
16 Apr, 2026	Trent Thad	Exec Vp Cfo	Disposed S	30,000	$80.00	$2.40Mn	331,194	Direct
03 Apr, 2026	Paul Anthony Mascarenas	Director	Acquired A	168	$62.19	$10.45K	55,488	Direct
13 Mar, 2026	Sudhir Gopalswamy	Group President, Amg Isg	Disposed S	6,114	$58.67	$358.71K	173,943	Direct
20 Feb, 2026	Trent Thad	Exec Vp Cfo	Acquired A	36,175	$0.00	$0	375,635	Direct
20 Feb, 2026	Sudhir Gopalswamy	Group President, Amg Isg	Acquired A	31,834	$0.00	$0	191,095	Direct
20 Feb, 2026	Hassane El-Khoury	Ceo President	Acquired A	75,315	$0.00	$0	1,090,925	Direct
20 Feb, 2026	Simon Keeton	Group President, Psg	Acquired A	26,046	$0.00	$0	225,041	Direct
20 Feb, 2026	Sudhir Gopalswamy	Group President, Amg Isg	Disposed F	1,455	$69.11	$100.56K	189,640	Direct

Showing 1 to 20 of 2,601 transactions