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Public ownership evidence

ON Semiconductor Corp (ON) Ownership Disclosures

Read ON insider transactions, institutional 13F filings and Congressional disclosures with report dates, public availability and original receipts.

As of 2026-11-07T14:03:26.246Z

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2026-10-022026-10-02MASCARENAS PAUL ANTHONYA126Not reported

First displayed source row from Recent Form 4 activity. The full bounded history and coverage notes remain below.

The displayed observation date is 2026-10-02 and its public availability date is 2026-10-02. Subtracting those calendar dates gives 0 days of disclosure lag. Historical public research can use the record from the availability date, rather than backdating knowledge to the observation date. The calendar-day difference does not assert an intraday publication time.

This row is code A: a award. An award is an acquisition but is not an open-market purchase. A purchase-following rule must not count it as code P.

Open the linked original receipts to verify the row, then inspect a second record before drawing a pattern. This public filing observation supplies source evidence, not a completed copy-trading return.

Recent Form 4 activity

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2026-10-022026-10-02MASCARENAS PAUL ANTHONYA126Not reported
2026-10-022026-10-01GOPALSWAMY SUDHIRS15,578Not reported

90-day public availability window, up to 50 records.

Recent institutional filing receipts

Inspect all 50 displayed rows: Recent institutional filing receipts

These are raw ticker-matched positions in recent 13F receipts, including amendments. They are not deduplicated current ownership totals. Open the manager profile to inspect its effective filing book.

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Cornerstone Financial Management LLC2026-06-302026-08-2970$6,618None
Cornerstone Financial Management LLC2026-03-312026-08-2923$1,424None
B. Riley Wealth Advisors, Inc.2025-03-312026-08-2952,000$44,788None
Advisors Asset Management, Inc.2021-12-312026-08-2855,673$3,781,310None
Advisors Asset Management, Inc.2022-12-312026-08-2871,459$4,456,898None
Advisors Asset Management, Inc.2020-06-302026-08-285,936$117,652None
Advisors Asset Management, Inc.2022-06-302026-08-2851,133$2,573,000None
Advisors Asset Management, Inc.2021-09-302026-08-2837,072$1,697,000None
Corient Private Wealth LP2026-06-302026-08-28127,968$12,098,140None
Corient Private Wealth LP2026-06-302026-08-288,741$826,375None
Principia Wealth Advisory, LLC2026-06-302026-08-2758$5,483None
Principia Wealth Advisory, LLC2026-03-312026-08-2753$3,282None
Advisors Asset Management, Inc.2024-03-312026-08-2722,221$1,634,355None
Advisors Asset Management, Inc.2025-03-312026-08-277,794$317,138None
Advisors Asset Management, Inc.2022-09-302026-08-2760,983$3,801,000None
Advisors Asset Management, Inc.2020-12-312026-08-276,071$199,000None
Advisors Asset Management, Inc.2022-03-312026-08-2754,870$3,435,411None
Advisors Asset Management, Inc.2023-06-302026-08-2748,166$4,555,540None
Advisors Asset Management, Inc.2023-09-302026-08-2740,257$3,741,888None
Advisors Asset Management, Inc.2023-03-312026-08-2755,248$4,548,015None
Advisors Asset Management, Inc.2021-03-312026-08-2717,435$725,470None
Advisors Asset Management, Inc.2021-06-302026-08-2731,182$1,194,000None
Advisors Asset Management, Inc.2020-09-302026-08-273,588$77,824None
Advisors Asset Management, Inc.2025-09-302026-08-27731$36,046None
Advisors Asset Management, Inc.2023-12-312026-08-2728,609$2,389,710None
Advisors Asset Management, Inc.2019-12-312026-08-2613,326$324,888None
Advisors Asset Management, Inc.2025-06-302026-08-251,120$58,699None
CYBER HORNET ETFs LLC2026-06-302026-08-251,067$100,874None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-25584,215$55,231,686None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-2555,231,686$584,215,000None
Advisors Asset Management, Inc.2024-09-302026-08-2220,363$1,478,557None
Advisors Asset Management, Inc.2024-06-302026-08-2220,739$1,421,658None
Advisors Asset Management, Inc.2024-12-312026-08-2213,925$877,971None
Advisors Asset Management, Inc.2025-12-312026-08-22717$38,826None
Advisors Asset Management, Inc.2020-03-312026-08-228,783$109,261None
WEST MICHIGAN ADVISORS, LLC2026-06-302026-08-229,496$897,752None
Assenagon Asset Management S.A.2026-06-302026-08-222,807,808$265,450,168None
Harvest Fund Management Co., Ltd2026-06-302026-08-2176$7,000None
Rehmann Capital Advisory Group2026-06-302026-08-213,447$325,312None
Archer Investment Corp2026-06-302026-08-2055$5,200None
MERCER GLOBAL ADVISORS INC /ADV2026-06-302026-08-2038,899$3,677,508None
Sankala Group LLC2026-06-302026-08-1916$1,262None
Beacon Pointe Advisors, LLC2026-06-302026-08-1922,100$2,089,359None
Advisors Asset Management, Inc.2019-03-312026-08-1943,601$896,873None
Advisors Asset Management, Inc.2019-09-302026-08-1926,862$516,019None
Advisors Asset Management, Inc.2019-06-302026-08-1929,546$597,125None
Ensign Peak Advisors, Inc2026-03-312026-08-1952,140$3,228,509None
Ensign Peak Advisors, Inc2025-12-312026-08-1935,400$1,916,910None
Ensign Peak Advisors, Inc2025-09-302026-08-1982,350$4,060,679None
Fulcrum Asset Management LLP2026-06-302026-08-19273$24,180None

90-day public filing window, up to 50 source positions.

Recent Congressional disclosures

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Gilbert Ray Cisneros, Jr.2026-10-122026-09-28purchase$15,001 - $50,000

Bounded public source preview, up to 25 disclosed events.

How to read the disclosure dates

The tables report different things: insider transactions, institutional positions and Congressional transaction ranges. Read each table with its source dates and units. They cannot be added into a combined ownership percentage.

  1. Company insiders

    SEC Form 4 purchases, sales and awards report transactions and their public filing availability.

  2. Institutional managers

    13F reports disclose delayed quarter-end positions. They are not a record of trades between quarters.

  3. Congressional filers

    Periodic transaction reports disclose transaction dates and amount brackets. Public filing dates determine what researchers could know.

Read the transaction codes

Awards use transaction code A, purchases P and sales S. An acquisition from an award is not the same as an open-market purchase. Joint filers may share a transaction. Use original receipts and availability dates to interpret the events.