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ON SEC Filing News — ON Semiconductor Corporation

Latest SEC filings for ON Semiconductor Corporation (ON) explained in plain English: insider buying and selling (Form 4), proposed insider sales (Form 144), material company events (8-K), and quarterly & annual reports (10-Q / 10-K). Sourced directly from SEC EDGAR.

What you’re looking at: Each item below is parsed from an actual SEC filing. Form 4 = confirmed insider transaction · Form 144 = proposed sale notice · 8-K = material event (earnings, M&A, leadership change, etc.) · 10-Q / 10-K = quarterly / annual report.
Form 4 Insider Selling 2026-04-17

ON insider Thad Trent (Exec VP & CFO) sold 30,000 shares (~$2.40M)

Thad Trent, listed as Exec VP & CFO at ON SEMICONDUCTOR CORP, reported an open-market sale of 30,000 ON shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

Filing: Form 4 (Insider Transaction) Insider: Thad Trent (Exec VP & CFO) Shares: 30,000 Est. Value: $2.40M
Form 144 Proposed Insider Sale 2026-04-16

ON Form 144 filed for proposed insider sale by THAD TRENT (30,000 shares) ~$4.35M

THAD TRENT filed a Form 144 with the SEC indicating intent to sell ON (ON SEMICONDUCTOR CORP) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: THAD TRENT Shares: 30,000 Est. Value: $4.35M
Form 4 Tax / Compensation Filing 2026-04-06

ON insider Form 4 filed for equity award, exercise, or tax withholding

MASCARENAS PAUL ANTHONY (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Filing: Form 4 (Insider Transaction) Insider: MASCARENAS PAUL ANTHONY (Director) Shares: 168
Form 4 Insider Selling 2026-03-16

ON insider GOPALSWAMY SUDHIR (Group President, AMG & ISG) sold 6,114 shares (~$358.7K)

GOPALSWAMY SUDHIR, listed as Group President, AMG & ISG at ON SEMICONDUCTOR CORP, reported an open-market sale of 6,114 ON shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

Filing: Form 4 (Insider Transaction) Insider: GOPALSWAMY SUDHIR (Group President, AMG & ISG) Shares: 6,114 Est. Value: $358.7K
Form 144 Proposed Insider Sale 2026-03-13

ON Form 144 filed for proposed insider sale by GOPALSWAMY SUDHIR (6,114 shares) ~$717.4K

GOPALSWAMY SUDHIR filed a Form 144 with the SEC indicating intent to sell ON (ON SEMICONDUCTOR CORP) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: GOPALSWAMY SUDHIR Shares: 6,114 Est. Value: $717.4K
Form 8-K Material Company Update 2026-03-11

ON filed 8-K — material company event

ON SEMICONDUCTOR CORP filed an 8-K with the SEC reporting a material event. Filing excerpt: XBRL Viewer

Filing: 8-K (Material Event)
Form 4 Tax / Compensation Filing 2026-02-24

ON insider Form 4 filed for equity award, exercise, or tax withholding

El-Khoury Hassane (Director, CEO & President) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Filing: Form 4 (Insider Transaction) Insider: El-Khoury Hassane (Director, CEO & President) Shares: 112,117
Form 4 Tax / Compensation Filing 2026-02-24

ON insider Form 4 filed for equity award, exercise, or tax withholding

GOPALSWAMY SUDHIR (Group President, AMG & ISG) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Filing: Form 4 (Insider Transaction) Insider: GOPALSWAMY SUDHIR (Group President, AMG & ISG) Shares: 42,872
Form 4 Tax / Compensation Filing 2026-02-24

ON insider Form 4 filed for equity award, exercise, or tax withholding

Thad Trent (Exec VP & CFO) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Filing: Form 4 (Insider Transaction) Insider: Thad Trent (Exec VP & CFO) Shares: 50,731
Form 4 Tax / Compensation Filing 2026-02-24

ON insider Form 4 filed for equity award, exercise, or tax withholding

KEETON SIMON (Group President, PSG) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Filing: Form 4 (Insider Transaction) Insider: KEETON SIMON (Group President, PSG) Shares: 36,964
Form 4 Insider Selling 2026-02-18

ON insider KEETON SIMON (Group President, PSG) sold 48,860 shares (~$3.51M)

KEETON SIMON, listed as Group President, PSG at ON SEMICONDUCTOR CORP, reported an open-market sale of 48,860 ON shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

Filing: Form 4 (Insider Transaction) Insider: KEETON SIMON (Group President, PSG) Shares: 48,860 Est. Value: $3.51M
Form 144 Large Proposed Insider Sale 2026-02-17

ON Form 144 filed for proposed insider sale by SIMON KEETON (48,860 shares) ~$7.01M

SIMON KEETON filed a Form 144 with the SEC indicating intent to sell ON (ON SEMICONDUCTOR CORP) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4. The proposed dollar value is large enough to merit attention.

Filing: Form 144 (Proposed Sale Notice) Insider: SIMON KEETON Shares: 48,860 Est. Value: $7.01M
Form 4 Tax / Compensation Filing 2026-02-13

ON insider Form 4 filed for equity award, exercise, or tax withholding

KIDDOO BRUCE E (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Filing: Form 4 (Insider Transaction) Insider: KIDDOO BRUCE E (Director) Shares: 3,570
Form 4 Tax / Compensation Filing 2026-02-12

ON insider Form 4 filed for equity award, exercise, or tax withholding

KEETON SIMON (Group President, PSG) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Filing: Form 4 (Insider Transaction) Insider: KEETON SIMON (Group President, PSG) Shares: 5,032
Form 4 Insider Selling 2026-02-12

ON insider El-Khoury Hassane (Director, CEO & President) sold 20,000 shares (~$1.46M)

El-Khoury Hassane, listed as Director, CEO & President at ON SEMICONDUCTOR CORP, reported an open-market sale of 20,000 ON shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

Filing: Form 4 (Insider Transaction) Insider: El-Khoury Hassane (Director, CEO & President) Shares: 20,000 Est. Value: $1.46M
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