Comparable stake leader
FMR LLC
SEC ownership of ON SEMICONDUCTOR CORP
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001097864.
Disclosed value leader
FMR LLC
Comparable rows
50/50
Latest evidence
26 May 2026
- Public ticker
- ON on Nasdaq
- Parsed ownership sources
- 13F, 13D/G, and 3/4/5
- Largest SEC-reported holder
- FMR LLC
- Latest 13D/G holder
- FMR LLC
- Latest parsed ownership date
- 26 May 2026
- Issuer CIK
- 0001097864
- Issuer location
- Scottsdale, AZ
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
2 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of ON SEMICONDUCTOR CORP (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
FMR LLC
Disclosed value leader
FMR LLC
Comparable rows
50/50
Latest evidence
26 May 2026
13F
13D/G
3/4/5
Lead comparable stake: 15%
13D/G row: FMR LLC
Showing 1-8 of 50 holder rows.
Quick read
FMR LLC leads the comparable SEC ownership view at 15%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens FMR LLC's linked filing trail.
Comparable ownership
Top 5
FMR LLC
15%
VANGUARD CAPITAL MANAGEMENT LLC
7.5%
VANGUARD PORTFOLIO MANAGEMENT LLC
5.1%
STATE STREET CORP
4.6%
Hassane El-Khoury
0.27%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| FMR LLC |
13F
13D/G
Company
|
15%
from 13D/G
|
$3,601,164,421
58,158,341 shares
|
— | 31 Mar 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13D/G
13F
Vanguard Capital Management · Company
|
7.5%
|
$1,831,296,508
29,575,202 shares
|
$0 | 31 Mar 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13D/G
13F
Vanguard Portfolio Management · Company
|
5.1%
|
$1,245,341,665
20,112,107 shares
|
$0 | 31 Mar 2026 |
| STATE STREET CORP |
13D/G
13F
STATE STREET CORPORATION · Company
|
4.6%
|
$1,158,362,048
19,393,304 shares
|
-$115,269,164 | 30 Jun 2025 |
| Hassane El-Khoury |
3/4/5
CEO & President, Director
|
0.27%
|
$72,850,440
1,054,123 shares
|
-$2,228,674 | 20 Feb 2026 |
| Trent Thad |
3/4/5
Exec VP & CFO
|
0.07%
|
$27,119,400
271,194 shares
|
-$13,563,947 | 23 Apr 2026 |
| Simon Keeton |
3/4/5
Group President, PSG
|
0.05%
|
$14,798,040
214,123 shares
|
-$4,675,758 | 20 Feb 2026 |
| Sudhir Gopalswamy |
3/4/5
Group President, AMG & ISG
|
0.04%
|
$10,748,568
173,588 shares
|
-$358,708 | 26 May 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to selling over the last 12 months. Net value: -$21,101,867.
Buys
$0
Insiders: 0
Sells
$21,101,867
Insiders: 5
Net
-$21,101,867
Shares: -286,345
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 286,345
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 96,114 | $0 | $8,548,708 | -$8,548,708 |
| 3-6 | 0 | 128,860 | $0 | $9,239,088 | -$9,239,088 |
| 6-9 | 0 | 41,000 | $0 | $2,271,031 | -$2,271,031 |
| 9-12 | 0 | 20,371 | $0 | $1,043,040 | -$1,043,040 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 20 reporting-owner rows connected to ON SEMICONDUCTOR CORP. Open a relationship link for the CIK-to-CIK filing trail.
Rows
20
Largest Forms 3/4/5 holder
Hassane El-Khoury
Net 12M change
-$21,101,867
Latest report
26 May 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Hassane El-Khoury | CEO & President, Director | $72,850,440 | -$2,228,674 | -3% | Mixed | 20 Feb 2026 |
| Trent Thad | Exec VP & CFO | $27,119,400 | -$13,563,947 | -33% | Filing P/S | 23 Apr 2026 |
| George H. Cave | EVP, Gen Cnsl, CCO, & Sec | $15,241,944 | Mixed | 08 Sep 2021 | ||
| Simon Keeton | Group President, PSG | $14,798,040 | -$4,675,758 | -24% | Mixed | 20 Feb 2026 |
| Atsushi Abe | Director | $13,220,460 | Mixed | 15 May 2024 | ||
| Vince Craig Hopkin | Evp & Gm, Asg | $12,822,496 | Mixed | 10 May 2022 | ||
| Sudhir Gopalswamy | Group President, AMG & ISG | $10,748,568 | -$358,708 | -3.2% | Median | 26 May 2026 |
| Ross Jatou | Svp & Gm, Isg | $8,733,193 | Mixed | 20 Feb 2024 | ||
| Christine Y. Yan | Director | $6,111,370 | Mixed | 14 May 2026 | ||
| Gregory L. Waters | Director | $5,148,500 | Mixed | 14 May 2026 | ||
| Robert Tong | Svp & Gm, Asg | $4,561,245 | Mixed | 02 Mar 2023 | ||
| Alan Campbell | Director | $4,332,689 | -$274,780 | -6% | Filing P/S | 12 Jun 2025 |
| Gilles Delfassy | Director | $4,221,785 | Mixed | 26 May 2022 | ||
| Paul Anthony Mascarenas | Director | $3,558,790 | Median | 14 May 2026 | ||
| Thomas Deitrich | Director | $3,035,190 | Mixed | 14 May 2026 | ||
| Susan K. Carter | Director | $2,977,519 | Mixed | 14 May 2026 | ||
| Bernard Raymond Colpitts Jr. | Chief Accounting Officer | $2,354,453 | Mixed | 11 Sep 2023 | ||
| Bruce E. Kiddoo | Director | $1,189,854 | Median | 14 May 2026 | ||
| Achyut Shah | Group President, PSG | $941,617 | Median | 15 May 2026 | ||
| Christina Lampe-Onnerud | Director | $350,082 | Mixed | 16 May 2024 |
Recent insider transactions for ON SEMICONDUCTOR CORP
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Sudhir Gopalswamy | ON | Common | Tax liability | -0.27% | -470 | 173,588 | 26 May 2026 | Direct | ||
| Thomas Deitrich | ON | Common | Award | 8.25% | 1,986 | 26,060 | 14 May 2026 | Direct | ||
| Gregory L. Waters | ON | Common | Award | 8.81% | 1,986 | 24,524 | 14 May 2026 | Direct | ||
| Susan K. Carter | ON | Common | Award | 8.4% | 1,986 | 25,638 | 14 May 2026 | Direct | ||
| Christine Y. Yan | ON | Common | Award | 4.26% | 1,986 | 48,655 | 14 May 2026 | Direct | ||
| Bruce E. Kiddoo | ON | Common | Award | 11.5% | 1,986 | 19,216 | 14 May 2026 | Direct | ||
| Paul Anthony Mascarenas | ON | Common | Award | 3.58% | 1,986 | 57,474 | 14 May 2026 | Direct | ||
| Trent Thad | ON | Common | Sale | -9.96% | $3,000,000 | $100.00 | -30,000 | 271,194 | 24 Apr 2026 | Direct |
| Trent Thad | ON | Common | Sale | -9.06% | $2,790,000 | $93.00 | -30,000 | 301,194 | 23 Apr 2026 | Direct |
| Trent Thad | ON | Common | Sale | -8.31% | $2,400,000 | $80.00 | -30,000 | 331,194 | 16 Apr 2026 | Direct |
| Paul Anthony Mascarenas | ON | Common | Award | 0.3% | 168 | 55,488 | 03 Apr 2026 | Direct | ||
| Sudhir Gopalswamy | ON | Common | Sale | -3.4% | $358,708 | $58.67 | -6,114 | 173,943 | 13 Mar 2026 | Direct |
| Hassane El-Khoury | ON | Common | Tax liability | -3.37% | -36,802 | 1,054,123 | 21 Feb 2026 | Direct | ||
| Sudhir Gopalswamy | ON | Common | Tax liability | -5.05% | -9,583 | 180,057 | 21 Feb 2026 | Direct | ||
| Trent Thad | ON | Common | Tax liability | -2.8% | -10,383 | 361,079 | 21 Feb 2026 | Direct | ||
| Simon Keeton | ON | Common | Tax liability | -3.51% | -7,788 | 214,123 | 21 Feb 2026 | Direct | ||
| Hassane El-Khoury | ON | Common | Award | 7.42% | 75,315 | 1,090,925 | 20 Feb 2026 | Direct | ||
| Sudhir Gopalswamy | ON | Common | Tax liability | -0.76% | -1,455 | 189,640 | 20 Feb 2026 | Direct | ||
| Sudhir Gopalswamy | ON | Common | Award | 20% | 31,834 | 191,095 | 20 Feb 2026 | Direct | ||
| Trent Thad | ON | Common | Tax liability | -1.11% | -4,173 | 371,462 | 20 Feb 2026 | Direct | ||
| Trent Thad | ON | Common | Award | 10.7% | 36,175 | 375,635 | 20 Feb 2026 | Direct | ||
| Simon Keeton | ON | Common | Tax liability | -1.39% | -3,130 | 221,911 | 20 Feb 2026 | Direct | ||
| Simon Keeton | ON | Common | Award | 13.1% | 26,046 | 225,041 | 20 Feb 2026 | Direct | ||
| Simon Keeton | ON | Common | Sale | -19.7% | $3,505,699 | $71.75 | -48,860 | 198,995 | 17 Feb 2026 | Direct |
| Bruce E. Kiddoo | ON | Common | Gift | -17.2% | -3,570 | 17,230 | 12 Feb 2026 | Direct | ||
| Hassane El-Khoury | ON | Common | Sale | -1.93% | $1,460,414 | $73.02 | -20,000 | 1,015,610 | 12 Feb 2026 | Direct |
| Trent Thad | ON | Common | Sale | -15% | $4,272,975 | $71.22 | -60,000 | 339,460 | 12 Feb 2026 | Direct |
| Simon Keeton | ON | Common | Tax liability | -1.99% | -5,032 | 247,855 | 10 Feb 2026 | Direct | ||
| Hassane El-Khoury | ON | Common | Tax liability | -1.97% | -20,762 | 1,035,610 | 10 Feb 2026 | Direct | ||
| Trent Thad | ON | Common | Tax liability | -1.65% | -6,709 | 399,460 | 10 Feb 2026 | Direct | ||
| Sudhir Gopalswamy | ON | Common | Tax liability | -3.74% | -6,191 | 159,261 | 10 Feb 2026 | Direct | ||
| Sudhir Gopalswamy | ON | Common | Tax liability | -3.52% | -6,041 | 165,452 | 06 Feb 2026 | Direct | ||
| Simon Keeton | ON | Common | Tax liability | -3.52% | -9,232 | 252,887 | 06 Feb 2026 | Direct | ||
| Trent Thad | ON | Common | Tax liability | -2.93% | -12,270 | 406,169 | 06 Feb 2026 | Direct | ||
| Hassane El-Khoury | ON | Common | Tax liability | -3.16% | -34,460 | 1,056,372 | 06 Feb 2026 | Direct | ||
| Sudhir Gopalswamy | ON | Common | Award | 19.1% | 27,508 | 171,493 | 05 Feb 2026 | Direct | ||
| Simon Keeton | ON | Common | Award | 12.5% | 29,147 | 262,119 | 05 Feb 2026 | Direct | ||
| Trent Thad | ON | Common | Award | 10.2% | 38,862 | 418,439 | 05 Feb 2026 | Direct | ||
| Hassane El-Khoury | ON | Common | Award | 11.5% | 112,772 | 1,090,832 | 05 Feb 2026 | Direct | ||
| Paul Anthony Mascarenas | ON | Common | Award | 0.34% | 189 | 55,320 | 19 Dec 2025 | Direct | ||
| Simon Keeton | ON | Common | Sale | -8.27% | $1,170,059 | $55.72 | -21,000 | 232,843 | 04 Dec 2025 | Direct |
| Trent Thad | ON | Common | Sale | -5.01% | $1,100,972 | $55.05 | -20,000 | 379,448 | 03 Dec 2025 | Direct |
| Paul Anthony Mascarenas | ON | Common | Award | 0.39% | 212 | 55,131 | 03 Oct 2025 | Direct | ||
| Hassane El-Khoury | ON | Common | Sale | -1.51% | $768,260 | $51.22 | -15,000 | 977,814 | 13 Aug 2025 | Direct |
| Paul Anthony Mascarenas | ON | Common | Award | 0.34% | 185 | 54,919 | 03 Jul 2025 | Direct | ||
| Alan Campbell | ON | Common | Sale | -5.96% | $274,780 | $51.16 | -5,371 | 84,689 | 12 Jun 2025 | Direct |
* marks a reported price that did not pass the local price check.