Public ownership evidence

Corning Incorporated (GLW) Ownership Disclosures

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

As of 2026-10-10T12:08:28.848Z

Separate the three disclosure sources

Step 1 of 3

Recent Form 4 activity

Corning Incorporated: source evidence dated 2026-10-10T12:08:28.848Z.

Available
2026-10-01
Trade date
2026-09-30
Reporting owners
Martin Kevin J
Code
A
Shares
228
Reported value
Not reported
What you should see

The displayed owner or issuer and source fields identify the receipt to verify; keep reporting and availability dates separate.

Step 2 of 3

Is this an insider transaction, 13F holding, or Congressional event?

Each source has different dates and units. Raw ticker-matched receipts, including amendments, are not deduplicated current ownership totals.

SEC 0000024741-26-000267
What you should see

Follow the source receipt or manager/member profile. Avoid combining transaction value and 13F position value into an ownership percentage.

Step 3 of 3

Read GLW fundamentals

Follow the source receipt or manager/member profile. Avoid combining transaction value and 13F position value into an ownership percentage.

Read GLW fundamentals
What you should see

Keep reporting dates and units beside the answer, and inspect its original citations.

Recent Form 4 activity

See the complete recent form 4 activity

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2026-10-012026-09-30Martin Kevin JA228Not reported
2026-10-012026-09-30Ferguson Roger W. Jr.A268Not reported
2026-10-012026-09-30CUMMINGS ROBERT F JRA268Not reported
2026-10-012026-09-30BURNS STEPHANIEA268Not reported
2026-09-082026-09-04Gullo Michelle LS9,874Not reported
2026-09-012026-08-28STEVERSON LEWIS AS13,100Not reported

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

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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Alternative Investment Advisors, LLC.2026-06-302026-09-01983$251,229None
Cornerstone Financial Management LLC2026-06-302026-08-29196$50,064None
Cornerstone Financial Management LLC2026-03-312026-08-29120$16,316None
Cornerstone Financial Management LLC2025-12-312026-08-29107$9,369None
B. Riley Wealth Advisors, Inc.2025-03-312026-08-2993,371$4,274,508None
Advisors Asset Management, Inc.2021-12-312026-08-28308,048$11,468,627None
Advisors Asset Management, Inc.2022-12-312026-08-28378,837$12,100,054None
Advisors Asset Management, Inc.2020-06-302026-08-2854$1,399None
Advisors Asset Management, Inc.2020-06-302026-08-28279,448$7,237,703None
Advisors Asset Management, Inc.2022-06-302026-08-28372,357$11,733,000None
Advisors Asset Management, Inc.2021-09-302026-08-28256,528$9,361,000None
Corient Private Wealth LP2026-06-302026-08-2828,462$7,270,106None
Corient Private Wealth LP2026-06-302026-08-28208,926$53,366,013None
TUCKER ASSET MANAGEMENT LLC2026-06-302026-08-281,500$383,145None
Formuepleje A/S2026-06-302026-08-286,955$1,776,516None
HORAN Wealth, LLC2026-06-302026-08-271,526$389,795None
Principia Wealth Advisory, LLC2026-06-302026-08-2773$18,646None
Principia Wealth Advisory, LLC2026-03-312026-08-2766$8,974None
Advisors Asset Management, Inc.2024-03-312026-08-27660,690$21,776,342None
Advisors Asset Management, Inc.2025-03-312026-08-27463,982$21,241,096None
Advisors Asset Management, Inc.2022-09-302026-08-27383,734$11,136,000None
Advisors Asset Management, Inc.2020-12-312026-08-27210,310$7,571,000None
Advisors Asset Management, Inc.2022-03-312026-08-27341,605$12,608,641None
Advisors Asset Management, Inc.2023-06-302026-08-27477,114$16,718,075None
Advisors Asset Management, Inc.2023-09-302026-08-27548,900$16,724,983None
Advisors Asset Management, Inc.2023-03-312026-08-27401,558$14,166,966None
Advisors Asset Management, Inc.2021-03-312026-08-27177,997$7,744,649None
Advisors Asset Management, Inc.2021-06-302026-08-27191,861$7,847,000None
Advisors Asset Management, Inc.2020-09-302026-08-27244,161$7,913,258None
Advisors Asset Management, Inc.2025-09-302026-08-27343,896$28,209,789None
Advisors Asset Management, Inc.2023-12-312026-08-27623,230$18,977,354None
WILLIAM JOHN SEMPOLINSKI2026-03-312026-08-274,510$613,225None
Dakota Wealth Management2025-09-302026-08-2735,183$2,886,095None
Dakota Wealth Management2025-12-312026-08-2735,781$3,133,020None
Dakota Wealth Management2026-03-312026-08-2729,246$3,976,634None
Advus Financial Partners, LLC2026-06-302026-08-26971$248,002None
Groupe la Francaise2026-06-302026-08-2629,940$7,645,389None
Advisors Asset Management, Inc.2019-12-312026-08-2654$1,572None
Advisors Asset Management, Inc.2019-12-312026-08-26264,759$7,707,134None
Financial Insights, Inc.2026-06-302026-08-261,580$403,579None
VIRGINIA RETIREMENT SYSTEMS ET Al2026-06-302026-08-2680,004$20,435,422None
Advisors Asset Management, Inc.2025-06-302026-08-25396,376$20,845,414None
CYBER HORNET ETFs LLC2026-06-302026-08-252,137$545,854None
Strategic Financial Services, Inc.2026-06-302026-08-254,111$1,050,073None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-251,208,819$308,768,637None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-25308,768,637$1,208,819,000None
Advisors Asset Management, Inc.2024-09-302026-08-22633,664$28,609,930None
Advisors Asset Management, Inc.2024-06-302026-08-22683,742$26,563,377None
Advisors Asset Management, Inc.2024-12-312026-08-22544,784$25,888,136None
Advisors Asset Management, Inc.2025-12-312026-08-22308,232$26,988,794None

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

Alternative Investment Advisors, LLC. ↗Cornerstone Financial Management LLC ↗Cornerstone Financial Management LLC ↗Cornerstone Financial Management LLC ↗B. Riley Wealth Advisors, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗

Recent Congressional disclosures

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Maria Elvira Salazar2026-10-082026-09-08purchase$1,001 - $15,000
Maria Elvira Salazar2026-10-082026-09-08purchase$1,001 - $15,000
Maria Elvira Salazar2026-10-082026-09-04sale$1,001 - $15,000
Maria Elvira Salazar2026-10-082026-09-24sale$1,001 - $15,000
Maria Elvira Salazar2026-10-082026-09-04sale$1,001 - $15,000
Ro Khanna2026-10-082026-09-04purchase$1,001 - $15,000

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.

Institutional source directory ↗Congressional source directory ↗

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.

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