NYSE · Holders
Corning Inc. (GLW) Institutional Ownership & Insider Trading History
Top GLW institutional shareholders, filing changes, and Form 4 insider activity with filters for buys, sales, option exercises, gifts, and tax withholding.
- Last confirmed price
- $123.99-8.10%
- Oct 22, 2026, 4:03 PM EDT · Prices may be delayed
Data dates
Prices as of Oct 22, 4:03 PM EDT · Fundamentals checked Oct 23, 4:04 AM EDT · Statement period ended Jun 30, 2026
Ownership read
GLW insider transaction activity: Net selling.
Blackrock Inc. is the largest institutional holder. 47 classified sales and 0 classified purchases appear in the recent insider records. 56 transactions lack a reliable action code. Use the filters below to separate open-market activity from option exercises, gifts, awards, and tax withholding.
Insider flow
GLW
Directional bars ignore awards, gifts, conversions, and tax withholding rows.
Top holder
65.77M
Blackrock Inc.
Insider transaction activity
Net selling
$110.12M sold / $0.0000 bought · 56 unclassified
Observations shown
130
10 holder / 120 insider
- Increased / initiated
- Unavailable
- Prior positions were not supplied
- Insider rows
- 120
- Transaction dates shown per row
Ownership concentration and transaction activity
- Top 10 reported holders
- 36.40% outstanding
- Changes with share-count history
- Prior-position data unavailable
- New / exited positions
- Prior-position data unavailable
- Largest increase with share-count history
- Prior share counts unavailable
These changes cover the holders shown. A holder missing from this list may still own shares. Compare positions from the same reporting quarters.
Net shares sold: 940,115
Sale-code S shares minus purchase-code P shares in this sample. Includes disclosed plans and unknown plan status; excludes grants, gifts, exercises and withholding. This is activity, not sentiment.
- Purchase / sale; plan unknown: 47
- Conversion / exercise: 9
- Gift: 7
- Other / unclassified: 56
- Grant: 1
Top 10 institutional holders
Corning Inc. (GLW) institutional ownership
Ranked by reported share count, with position changes and separate position and filing dates where ownership data supplies them.
| # | Institution | % held | Shares | Position / filing date |
|---|---|---|---|---|
| 1 | 7.63% | 65.77M | Position as of Jun 30, 2026Filing date unknown | |
| 2 | 5.90% | 50.83M | Position as of Jun 30, 2026Filing date unknown | |
| 3 | 4.77% | 41.11M | Position as of Jun 30, 2026Filing date unknown | |
| 4 | 4.18% | 36.02M | Position as of Jun 30, 2026Filing date unknown | |
| 5 | 2.87% | 24.70M | Position as of Jun 30, 2026Filing date unknown | |
| 6 | 2.79% | 24.03M | Position as of Jun 30, 2026Filing date unknown | |
| 7 | 2.20% | 18.92M | Position as of Jun 30, 2026Filing date unknown | |
| 8 | 2.17% | 18.73M | Position as of Jun 30, 2026Filing date unknown | |
| 9 | 2.13% | 18.36M | Position as of Jun 30, 2026Filing date unknown | |
| 10 | 1.76% | 15.13M | Position as of Jun 30, 2026Filing date unknown |
Recent insider transactions
Corning Inc. (GLW) Form 4 filings
Action codes are translated so open-market buys and sales are separate from awards, gifts, conversions, and tax withholding. Window: May 29, 2025–Sep 4, 2026 · 120 records.
| # | Insider | % company | Action | Shares | Price | Value | Transaction / filing |
|---|---|---|---|---|---|---|---|
| 1 | GULLO MICHELLE L Officer | <0.01% | SaleOpen-market or direct sale reported on Form 4.Transaction context
Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership. | 9.87K | $152.29 | $1,503,713 | Sep 4, 2026Filing date unavailableOriginal filing link unavailable |
| 2 | STEVERSON LEWIS A Officer | <0.01% | SaleOpen-market or direct sale reported on Form 4.Transaction context
Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership. | 13.10K | $151.29 | $1,981,929 | Aug 28, 2026Filing date unavailableOriginal filing link unavailable |
| 3 | WEEKS WENDELL P. Chief Executive Officer | 0.01% | SaleOpen-market or direct sale reported on Form 4.Transaction context
Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership. | 100.00K | $186.46 | $18,646,070 | Jun 9, 2026Filing date unavailableOriginal filing link unavailable |
| 4 | WEEKS WENDELL P. Chief Executive Officer | 0.01% | ConversionConversion or exercise of derivative securities. Read alongside sale rows before treating it as bearish.Transaction context
Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership. | 100.00K | $27.03 | $2,703,000 | Jun 9, 2026Filing date unavailableOriginal filing link unavailable |
| 5 | AMIN JAYMIN Chief Technology Officer | <0.01% | SaleOpen-market or direct sale reported on Form 4.Transaction context
Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership. | 27.39K | $192.14 | $5,263,637 | May 22, 2026Filing date unavailableOriginal filing link unavailable |
| 6 | AMIN JAYMIN Chief Technology Officer | <0.01% | ConversionConversion or exercise of derivative securities. Read alongside sale rows before treating it as bearish.Transaction context
Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership. | 7.92K | $27.00 | $213,759 | May 22, 2026Filing date unavailableOriginal filing link unavailable |
| 7 | NELSON AVERY H III Chief Operating Officer | <0.01% | SaleOpen-market or direct sale reported on Form 4.Transaction context
Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership. | 20.00K | $195.93 | $3,918,600 | May 15, 2026Filing date unavailableOriginal filing link unavailable |
| 8 | FANG LI Officer | <0.01% | ConversionConversion or exercise of derivative securities. Read alongside sale rows before treating it as bearish.Transaction context
Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership. | 8.72K | $19.65 | $171,446 | May 14, 2026Filing date unavailableOriginal filing link unavailable |
| 9 | VERKLEEREN RONALD L Officer | <0.01% | SaleOpen-market or direct sale reported on Form 4.Transaction context
Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership. | 10.00K | $207.77 | $2,077,708 | May 13, 2026Filing date unavailableOriginal filing link unavailable |
| 10 | BECKER STEFAN Officer | <0.01% | GiftGift transfer. Usually non-cash and not an open-market sale.Transaction context
Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership. | 126 | Non-cash | Non-cash | May 13, 2026Filing date unavailableOriginal filing link unavailable |
| 11 | TILLMAN MICHAUNE D. General Counsel | <0.01% | SaleOpen-market or direct sale reported on Form 4.Transaction context
Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership. | 3.26K | $207.02 | $674,870 | May 11, 2026Filing date unavailableOriginal filing link unavailable |
| 12 | SEETHARAM SOUMYA Chief Technology Officer | <0.01% | SaleOpen-market or direct sale reported on Form 4.Transaction context
Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership. | 20.00K | $206.23 | $4,124,646 | May 11, 2026Filing date unavailableOriginal filing link unavailable |
Frequently asked
Questions about this quote
Who are the largest GLW shareholders?
Blackrock Inc. is the largest reported institutional holder of GLW, with 65.77 million shares, or about 7.63% of shares outstanding.
What does the institutional filing activity show for GLW?
Corning Inc. has 10 institutional rows on file. Previous position sizes are unavailable, so increases and reductions cannot be determined.
What insider transactions are available for GLW?
TECHi shows 120 dated GLW insider transactions through Sep 4, 2026, with transaction types kept separate so administrative actions are not presented as open-market trades.
Are GLW insiders buying or selling?
The displayed GLW activity reads Net selling: 47 sales and 0 purchases. Other transaction types remain separate.
Who is the most active reported GLW insider?
WEEKS WENDELL P. has the largest absolute share movement in the displayed GLW filing rows, totaling 371,651 shares. The action labels provide the transaction context.
What this page answers
Check who owns the float and whether insiders are active.
Explore Institutional concentration, insider transaction pattern, and float context.
Keep in mind Filings are delayed or transactions are administrative rather than economic.
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