← Unusual insider activity · Company hub
GLW Corning Incorporated
Insider figures are trailing 90 days, open-market Form 4 only. Institutional figures are the latest reported quarter. These windows are not simultaneous.
-$3.5M net selling - trailing 90 days
0 buyers - 2 unique sellers
Historical context: most recent complete month (2026-08) is the 63rd percentile of this ticker's monthly net P/S flow over 23 complete months (limited history). Lower percentiles are more selling; higher are more buying.
Institutional activity: not available - insufficient comparable institutions for the latest complete quarter.
open-market Form 4 only - grants, exercises, tax withholding excluded. ~ derived from SEC-reported shares x price.
Institutional activity: not available - insufficient comparable institutions for the latest complete quarter.
Who is responsible
| Insider | Role | Net activity | Rows |
|---|---|---|---|
| STEVERSON LEWIS A | Vice Chairman, EVP and CLAO | -~$2.0M | 1 |
| Gullo Michelle L | Senior Vice President & CHRO | -~$1.5M | 1 |
Transactions
| Date | Insider | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 9/4/2026 | Gullo Michelle L | Senior Vice President & CHRO | S | -9874 | 152.2902 | ~$1.5M |
| 8/28/2026 | STEVERSON LEWIS A | Vice Chairman, EVP and CLAO | S | -13100 | 151.2923 | ~$2.0M |
| 6/9/2026 | WEEKS WENDELL P | Chairman, CEO and President | S | -100000 | 186.4607 | ~$18.6M |
| 5/22/2026 | Amin Jaymin | SVP and Chief Tech. Officer | S | -27395 | 192.1386 | ~$5.3M |
| 5/15/2026 | Nelson Avery H III | Executive Vice President & COO | S | -20000 | 195.93 | ~$3.9M |
| 5/13/2026 | Verkleeren Ronald L | SVP Emerging Innovations Group | S | -10000 | 207.7708 | ~$2.1M |
| 5/11/2026 | TILLMAN MICHAUNE D | SVP and General Counsel | S | -3260 | 207.0152 | ~$0.7M |
| 5/11/2026 | Seetharam Soumya | Senior Vice President & CDIO | S | -20000 | 206.2323 | ~$4.1M |
| 5/11/2026 | Zhang John Z | Exec. Vice President & CCDO | S | -10000 | 198.3383 | ~$2.0M |
| 5/8/2026 | STEVERSON LEWIS A | Vice Chairman, EVP and CLAO | S | -27750 | 196.0574 | ~$5.4M |
| 5/8/2026 | Gullo Michelle L | Senior Vice President & CHRO | S | -5315 | 189.029 | ~$1.0M |
| 5/8/2026 | Becker Stefan | SVP, Finance & Corp Controller | S | -21000 | 188.08 | ~$3.9M |
| 5/7/2026 | Schlesinger Edward A | Exec. Vice President and CFO | S | -22562 | 186.076 | ~$4.2M |
| 5/6/2026 | Zhang John Z | Exec. Vice President & CCDO | S | -15000 | 184.6656 | ~$2.8M |
| 2/26/2026 | WEEKS WENDELL P | Chairman, CEO and President | S | -137514 | 155.3721 | ~$21.4M |
| 2/13/2026 | Gullo Michelle L | Senior Vice President & CHRO | S | -587 | 131.1115 | ~$77K |
| 2/12/2026 | Gullo Michelle L | Senior Vice President & CHRO | S | -44 | 135.8315 | ~$6K |
| 2/12/2026 | Zhang John Z | Exec. Vice President & CCDO | S | -1531 | 133.7457 | ~$0.2M |
| 2/11/2026 | Nelson Avery H III | Executive Vice President & COO | S | -1583 | 128.743 | ~$0.2M |
| 2/10/2026 | STEVERSON LEWIS A | Vice Chairman, EVP and CLAO | S | -15366 | 130.2197 | ~$2.0M |
| 2/9/2026 | Nelson Avery H III | Executive Vice President & COO | S | -6262 | 129.7864 | ~$0.8M |
| 2/9/2026 | Kammerud Jordana Daryl | SVP | S | -30000 | 127.6673 | ~$3.8M |
| 2/9/2026 | Musser Eric S | — | S | -15000 | 130.2474 | ~$2.0M |
| 2/4/2026 | Fang Li | SVP, Corning Intl & NBD, Solar | S | -9797 | 113.512 | ~$1.1M |
| 2/2/2026 | O'Day Michael Paul | SVP and GM, Optical Comm. | S | -5051 | 110.5191 | ~$0.6M |
| 2/2/2026 | Musser Eric S | — | S | -25000 | 110.0032 | ~$2.8M |
| 1/29/2026 | Gullo Michelle L | Senior Vice President & CHRO | S | -44 | 102.395 | ~$5K |
| 1/29/2026 | Schlesinger Edward A | Exec. Vice President and CFO | S | -21104 | 104.5454 | ~$2.2M |
| 12/10/2025 | Seetharam Soumya | Senior Vice President & CDIO | S | -16547 | 90.784 | ~$1.5M |
| 12/10/2025 | Verkleeren Ronald L | SVP Emerging Innovations Group | S | -21000 | 94.6943 | ~$2.0M |
| 10/31/2025 | STEVERSON LEWIS A | Vice Chairman, EVP and CLAO | S | -23142 | 89.0487 | ~$2.1M |
| 10/31/2025 | Schlesinger Edward A | Exec. Vice President and CFO | S | -20893 | 91.25 | ~$1.9M |
| 10/29/2025 | Becker Stefan | SVP, Finance & Corp Controller | S | -12100 | 91.2839 | ~$1.1M |
| 10/29/2025 | Musser Eric S | — | S | -100000 | 90.1734 | ~$9.0M |
| 9/17/2025 | Amin Jaymin | SVP and Chief Tech. Officer | S | -17721 | 77.1795 | ~$1.4M |
| 9/4/2025 | Musser Eric S | President | S | -20000 | 70.2312 | ~$1.4M |
| 8/12/2025 | Zhang John Z | Exec. Vice President & CCDO | S | -1212 | 65.5325 | ~$79K |
| 8/11/2025 | Musser Eric S | President | S | -18850 | 65.3148 | ~$1.2M |
| 8/7/2025 | WEEKS WENDELL P | Chairman and CEO | S | -82103 | 65.1856 | ~$5.4M |
| 8/7/2025 | Musser Eric S | President | S | -20000 | 65.8788 | ~$1.3M |
| 7/30/2025 | O'Day Michael Paul | SVP and GM, Optical Comm. | S | -14879 | 62.3639 | ~$0.9M |
| 7/30/2025 | Nelson Avery H III | Executive Vice President & COO | S | -36240 | 62.2615 | ~$2.3M |
| 7/30/2025 | STEVERSON LEWIS A | Vice Chairman, EVP and CLAO | S | -16646 | 62.2236 | ~$1.0M |
| 7/30/2025 | Schlesinger Edward A | Exec. Vice President and CFO | S | -14082 | 62.279 | ~$0.9M |
| 6/11/2025 | Verkleeren Ronald L | SVP Emerging Innovations Group | S | -20000 | 50.5203 | ~$1.0M |
| 6/6/2025 | Musser Eric S | President and COO | S | -20000 | 51.1142 | ~$1.0M |
| 6/2/2025 | Schlesinger Edward A | Exec. Vice President and CFO | S | -4464 | 49.8508 | ~$0.2M |
| 5/29/2025 | Becker Stefan | SVP, Finance & Corp Controller | S | -17106 | 49.6807 | ~$0.8M |
| 5/29/2025 | Seetharam Soumya | Senior Vice President & CDIO | S | -6505 | 50.0054 | ~$0.3M |
| 5/28/2025 | Seetharam Soumya | Senior Vice President & CDIO | S | -14313 | 50.0103 | ~$0.7M |
| 5/28/2025 | Zhang John Z | Exec. Vice President & CCDO | S | -9610 | 49.2902 | ~$0.5M |
| 5/12/2025 | Zhang John Z | Exec. Vice President & CCDO | S | -8000 | 46.9117 | ~$0.4M |
| 4/30/2025 | Bell Michael Alan | — | S | -20262 | 44.0612 | ~$0.9M |
| 2/28/2025 | WEEKS WENDELL P | Chairman and CEO | S | -55831 | 50.1129 | ~$2.8M |
| 2/27/2025 | WEEKS WENDELL P | Chairman and CEO | S | -44169 | 50.0376 | ~$2.2M |
| 2/19/2025 | Schlesinger Edward A | Exec. Vice President and CFO | S | -4137 | 52.8205 | ~$0.2M |
| 2/18/2025 | Zhang John Z | SVP&GM Glass Innov. & Asia | S | -14111 | 52.7785 | ~$0.7M |
| 1/31/2025 | Musser Eric S | President and COO | S | -30000 | 51.9246 | ~$1.6M |
| 1/30/2025 | Bell Michael Alan | — | S | -2209 | 49.8708 | ~$0.1M |
| 11/25/2024 | Bayne John P JR | — | S | -8876 | 49.0902 | ~$0.4M |
| 11/22/2024 | Bayne John P JR | — | S | -5000 | 48.3908 | ~$0.2M |
| 11/21/2024 | Curran Martin J | — | S | -50000 | 47.96 | ~$2.4M |
| 11/13/2024 | Zhang John Z | SVP&GM Glass Innov. & Asia | S | -5175 | 48.3601 | ~$0.3M |
| 11/12/2024 | Curran Martin J | — | S | -10200 | 48.3317 | ~$0.5M |
| 11/1/2024 | STEVERSON LEWIS A | EVP and CLAO | S | -16079 | 48.1523 | ~$0.8M |
| 10/31/2024 | WEEKS WENDELL P | Chairman and CEO | S | -100000 | 48.3615 | ~$4.8M |
| 10/30/2024 | Becker Stefan | SVP, Finance & Controller | S | -24077 | 48.625 | ~$1.2M |
| 10/30/2024 | Schlesinger Edward A | Exec. Vice President and CFO | S | -21948 | 48.0717 | ~$1.1M |
| 10/30/2024 | Musser Eric S | President and COO | S | -74640 | 48.6143 | ~$3.6M |
| 10/30/2024 | Fang Li | SVP, Corning Intl & NBD, Solar | S | -9166 | 48.4505 | ~$0.4M |
| 9/13/2024 | Bayne John P JR | — | S | -5000 | 42.5 | ~$0.2M |
| 8/14/2024 | Becker Stefan | SVP, Finance & Controller | S | -17938 | 39.5098 | ~$0.7M |