GLW · Insider Trading
Corning Incorporated
Every open-market purchase and sale reported by GLW officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
Form 4 Filings
50
most recent
Open-Market Buys
0
code P
Sales
12
code S
Reporting Insiders
25
current holders
GLW — Recent Form 4 Transactions (latest 2026-10-01)
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-10-01 | Kevin J Martin | Director | A | — | — |
| 2026-10-01 | Robert F Cummings Jr | Director | A | — | — |
| 2026-10-01 | Stephanie Burns | Director | A | — | — |
| 2026-10-01 | Roger W. Ferguson Jr. | Director | A | — | — |
| 2026-09-08 | Michelle L Gullo | Senior Vice President & CHRO | Sell | −9,874 | −$1.50M |
| 2026-08-31 | Lewis A Steverson | Vice Chairman, EVP and CLAO | Sell | −13,100 | −$1.98M |
| 2026-07-01 | Roger W. Ferguson Jr. | Director | A | — | — |
| 2026-07-01 | Kevin J Martin | Director | A | — | — |
| 2026-07-01 | Stephanie Burns | Director | A | — | — |
| 2026-07-01 | Robert F Cummings Jr | Director | A | — | — |
| 2026-06-23 | Michelle L Gullo | Senior Vice President & CHRO | F | −18,378 | −$3.86M |
| 2026-06-09 | Wendell P Weeks | Chairman, CEO and President | MIXED | — | −$15.94M |
| 2026-05-26 | Jaymin Amin | SVP and Chief Tech. Officer | MIXED | −19,478 | −$5.05M |
| 2026-05-18 | Avery H Nelson III | Executive Vice President & COO | Sell | −20,000 | −$3.92M |
| 2026-05-15 | Li Fang | SVP, Corning Intl & NBD, Solar | M | +8,725 | +$171.45K |
| 2026-05-14 | Stefan Becker | SVP, Finance & Corp Controller | G | −126 | — |
| 2026-05-14 | Ronald L Verkleeren | SVP Emerging Innovations Group | Sell | −10,000 | −$2.08M |
| 2026-05-12 | John Z Zhang | Exec. Vice President & CCDO | Sell | −10,000 | −$1.98M |
| 2026-05-12 | Soumya Seetharam | Senior Vice President & CDIO | Sell | −20,000 | −$4.12M |
| 2026-05-12 | Michaune D Tillman | SVP and General Counsel | Sell | −3,260 | −$674.87K |
| 2026-05-08 | Stefan Becker | SVP, Finance & Corp Controller | Sell | −21,000 | −$3.95M |
| 2026-05-08 | Michelle L Gullo | Senior Vice President & CHRO | Sell | −5,315 | −$1.00M |
| 2026-05-08 | Lewis A Steverson | Vice Chairman, EVP and CLAO | Sell | −27,750 | −$5.44M |
| 2026-05-07 | Edward A Schlesinger | Exec. Vice President and CFO | Sell | −22,562 | −$4.20M |
| 2026-05-06 | John Z Zhang | Exec. Vice President & CCDO | Sell | −15,000 | −$2.77M |
| 2026-05-05 | Michaune D Tillman | SVP and General Counsel | F | −2,946 | −$471.24K |
| 2026-05-01 | Stefan Becker | SVP, Finance & Corp Controller | MIXED | — | −$424.56K |
| 2026-04-29 | Michael Paul O'Day | SVP and GM, Optical Comm. | F | −3,496 | −$535.06K |
| 2026-04-16 | Jaymin Amin | SVP and Chief Tech. Officer | MIXED | +26,118 | −$4.17M |
| 2026-04-16 | Stefan Becker | SVP, Finance & Corp Controller | MIXED | +21,919 | −$3.85M |
| 2026-04-16 | Michelle L Gullo | Senior Vice President & CHRO | MIXED | +6,951 | −$1.04M |
| 2026-04-16 | Jordana Daryl Kammerud | SVP | MIXED | +9,497 | −$1.52M |
| 2026-04-16 | Avery H Nelson III | Executive Vice President & COO | MIXED | +30,271 | −$4.84M |
| 2026-04-16 | Michael Paul O'Day | SVP and GM, Optical Comm. | MIXED | +11,926 | −$1.42M |
| 2026-04-16 | Edward A Schlesinger | Exec. Vice President and CFO | MIXED | +32,354 | −$5.17M |
| 2026-04-16 | Soumya Seetharam | Senior Vice President & CDIO | MIXED | +27,158 | −$2.97M |
| 2026-04-16 | Lewis A Steverson | Vice Chairman, EVP and CLAO | MIXED | +52,441 | −$8.38M |
| 2026-04-16 | Ronald L Verkleeren | SVP Emerging Innovations Group | MIXED | +24,060 | −$3.84M |
| 2026-04-16 | John Z Zhang | Exec. Vice President & CCDO | MIXED | +30,138 | −$5.29M |
| 2026-04-16 | Wendell P Weeks | Chairman, CEO and President | MIXED | +174,462 | −$27.87M |
| 2026-04-02 | Jaymin Amin | SVP and Chief Tech. Officer | A | — | — |
| 2026-04-02 | Stefan Becker | SVP, Finance & Corp Controller | A | — | — |
| 2026-04-02 | Lewis A Steverson | Vice Chairman, EVP and CLAO | A | — | — |
| 2026-04-02 | Michelle L Gullo | Senior Vice President & CHRO | A | — | — |
| 2026-04-02 | Avery H Nelson III | Executive Vice President & COO | A | — | — |
| 2026-04-02 | Michael Paul O'Day | SVP and GM, Optical Comm. | A | — | — |
| 2026-04-02 | Edward A Schlesinger | Exec. Vice President and CFO | A | — | — |
| 2026-04-02 | Soumya Seetharam | Senior Vice President & CDIO | A | — | — |
| 2026-04-02 | Michaune D Tillman | SVP and General Counsel | A | — | — |
| 2026-04-02 | Ronald L Verkleeren | SVP Emerging Innovations Group | A | — | — |
GLW — Current Insider Holders
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Wendell P Weeks | Chairman, CEO and President | 1,020,115 | $130.31M |
| Robert F Cummings Jr | Director | 151,659 | $19.37M |
| Deborah Rieman | Director | 100,813 | $12.88M |
| Jaymin Amin | SVP and Chief Tech. Officer | 97,002 | $12.39M |
| Avery H Nelson III | Executive Vice President & COO | 73,906 | $9.44M |
| Edward A Schlesinger | Exec. Vice President and CFO | 65,264 | $8.34M |
| Mark S Wrighton | Director | 61,621 | $7.87M |
| Stephanie Burns | Director | 56,995 | $7.28M |
| Richard T Clark | Director | 55,060 | $7.03M |
| Ronald L Verkleeren | SVP Emerging Innovations Group | 48,143 | $6.15M |
| Michael Paul O'Day | SVP and GM, Optical Comm. | 39,122 | $5.00M |
| Kevin J Martin | Director | 31,506 | $4.02M |
| Deborah A Henretta | Director | 25,965 | $3.32M |
| Soumya Seetharam | Senior Vice President & CDIO | 25,570 | $3.27M |
| Donald W Blair | Director | 17,337 | $2.21M |
| Jordana Daryl Kammerud | SVP | 15,617 | $1.99M |
| Lewis A Steverson | Vice Chairman, EVP and CLAO | 15,052 | $1.92M |
| Daniel P Huttenlocher | Director | 13,910 | $1.78M |
| Michaune D Tillman | SVP and General Counsel | 10,174 | $1.30M |
| Hansel E Tookes II | Director | 10,000 | $1.28M |
| Michelle L Gullo | Senior Vice President & CHRO | 9,384 | $1.20M |
| Li Fang | SVP, Corning Intl & NBD, Solar | 8,725 | $1.11M |
| Stefan Becker | SVP, Finance & Corp Controller | 7,137 | $911.68K |
| Roger W. Ferguson Jr. | Director | 6,938 | $886.26K |
| John P Bayne JR | — | 6,700 | $855.86K |
GLW Insider Trading FAQ
Who are the insiders at GLW?
25 officers, directors and 10%+ beneficial owners currently report holdings in GLW via SEC Form 4.
Are GLW insiders buying or selling?
Across the 50 most recent Form 4 filings for GLW, 0 were open-market purchases (code P) and 12 were sales (code S). Sales frequently reflect scheduled 10b5-1 plans or tax withholding rather than a view on the stock.
How current is GLW insider data?
Form 4 must be filed within two business days of the transaction, so this is close to real time. The most recent GLW filing is dated 2026-10-01.
How to read Form 4 activity
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the GLW quote page; the site-wide leaderboard is on the insider transactions hub.
More on GLW
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.