What the executives and directors of Corning Inc. actually did with their own shares, decoded from three years of SEC Form 4 filings.
The tape: three years of insider trades
Every marker sits at the exact price reported on the Form 4. The line is the monthly median of all prices insiders reported, so the chart needs no market feed; the gray strip is routine flow (vestings, tax withholding, gifts) that headlines love to miscount as selling.
Where the shares went, last 12 months
Every Form 4 movement decomposed: what flowed in (grants, vested equity, purchases) and what flowed out (tax withholding, plan sales, discretionary sales, gifts). Counted in shares, because grants carry no price.
Skin in the game
Directly held shares as reported after each trade, indexed to 100 five years back. Direct holdings only: trust and family-entity positions are per-entity in the filings and do not sum honestly, so this chart refuses to guess. The steps are the trades.
Who holds what
| Insider | Role | Shares held | Buys 12 m | Sales 12 m |
|---|---|---|---|---|
| WEEKS WENDELL P Chairman, CEO and President | CEO | 1.6M | — | $45.4M |
| McRae Lawrence D Vice Chairman & Corp. Dev. Off | Officer | 232.1K | — | — |
| Amin Jaymin SVP and Chief Tech. Officer | Officer | 121.8K | — | $6.6M |
| TOOKES HANSEL E II | Other | 92.8K | — | — |
| Nelson Avery H III Executive Vice President & COO | COO | 70.1K | — | $4.9M |
| Schlesinger Edward A Exec. Vice President and CFO | CFO | 65.3K | — | $8.3M |
| WRIGHTON MARK S | Other | 61.6K | — | — |
| Verkleeren Ronald L SVP Emerging Innovations Group | Officer | 48.1K | — | $4.1M |
| CLARK RICHARD T | Other | 43.2K | — | — |
| O'Day Michael Paul SVP and GM, Optical Comm. | Officer | 39.1K | — | $558K |
| Capps Cheryl C | Other | 31.6K | — | — |
| STEVERSON LEWIS A Vice Chairman, EVP and CLAO | Officer | 28.2K | — | $9.5M |
| Seetharam Soumya Senior Vice President & CDIO | Officer | 25.6K | — | $5.6M |
| Gullo Michelle L Senior Vice President & CHRO | Officer | 19.3K | — | $1.1M |
Open-market trade log
| Date | Insider | Type | Shares | Price | Value |
|---|---|---|---|---|---|
| 2026-06-09 | WEEKS WENDELL P (CEO) | Discretionary sale | 100K | $186.46 | $18.6M |
| 2026-05-22 | Amin Jaymin (Officer) | Discretionary sale | 27.4K | $192.14 | $5.3M |
| 2026-05-15 | Nelson Avery H III (COO) | Discretionary sale | 20K | $195.93 | $3.9M |
| 2026-05-13 | Verkleeren Ronald L (Officer) | Discretionary sale | 10K | $207.77 | $2.1M |
| 2026-05-11 | Zhang John Z (Officer) | Discretionary sale | 10K | $198.34 | $2M |
| 2026-05-11 | Seetharam Soumya (Officer) | Discretionary sale | 20K | $206.23 | $4.1M |
| 2026-05-11 | TILLMAN MICHAUNE D (Officer) | Discretionary sale | 3,260 | $207.02 | $675K |
| 2026-05-08 | STEVERSON LEWIS A (Officer) | Discretionary sale | 27.8K | $196.06 | $5.4M |
| 2026-05-08 | Becker Stefan (Officer) | Discretionary sale | 21K | $188.08 | $3.9M |
| 2026-05-08 | Gullo Michelle L (Officer) | Discretionary sale | 5,315 | $189.03 | $1M |
| 2026-05-07 | Schlesinger Edward A (CFO) | Discretionary sale | 22.6K | $186.08 | $4.2M |
| 2026-05-06 | Zhang John Z (Officer) | Discretionary sale | 15K | $184.67 | $2.8M |
| 2026-02-26 | WEEKS WENDELL P (CEO) | Discretionary sale | 137.5K | $155.37 | $21.4M |
| 2026-02-13 | Gullo Michelle L (Officer) | Discretionary sale | 587 | $131.11 | $77K |
| 2026-02-12 | Zhang John Z (Officer) | Discretionary sale | 1,531 | $133.75 | $205K |
| 2026-02-12 | Gullo Michelle L (Officer) | Discretionary sale | 44 | $135.83 | $6K |
| 2026-02-11 | Nelson Avery H III (COO) | Discretionary sale | 1,583 | $128.74 | $204K |
| 2026-02-10 | STEVERSON LEWIS A (Officer) | Discretionary sale | 15.4K | $130.22 | $2M |
| 2026-02-09 | Musser Eric S (Other) | Discretionary sale | 15K | $130.25 | $2M |
| 2026-02-09 | Kammerud Jordana Daryl (Officer) | Discretionary sale | 30K | $127.67 | $3.8M |
| 2026-02-09 | Nelson Avery H III (COO) | Discretionary sale | 6,262 | $129.79 | $813K |
| 2026-02-04 | Fang Li (Officer) | Discretionary sale | 9,797 | $113.51 | $1.1M |
| 2026-02-02 | Musser Eric S (Other) | Discretionary sale | 25K | $110.00 | $2.8M |
| 2026-02-02 | O'Day Michael Paul (Officer) | Discretionary sale | 5,051 | $110.52 | $558K |
| 2026-01-29 | Schlesinger Edward A (CFO) | Discretionary sale | 21.1K | $104.55 | $2.2M |
| 2026-01-29 | Gullo Michelle L (Officer) | Discretionary sale | 44 | $102.40 | $5K |
| 2025-12-10 | Verkleeren Ronald L (Officer) | Discretionary sale | 21K | $94.69 | $2M |
| 2025-12-10 | Seetharam Soumya (Officer) | Discretionary sale | 16.5K | $90.78 | $1.5M |
| 2025-10-31 | STEVERSON LEWIS A (Officer) | Discretionary sale | 23.1K | $89.05 | $2.1M |
| 2025-10-31 | Schlesinger Edward A (CFO) | Discretionary sale | 20.9K | $91.25 | $1.9M |
| 2025-10-29 | Musser Eric S (Other) | Discretionary sale | 100K | $90.17 | $9M |
| 2025-10-29 | Becker Stefan (Officer) | Discretionary sale | 12.1K | $91.28 | $1.1M |
| 2025-09-17 | Amin Jaymin (Officer) | Discretionary sale | 17.7K | $77.18 | $1.4M |
| 2025-09-04 | Musser Eric S (Officer) | Discretionary sale | 20K | $70.23 | $1.4M |
| 2025-08-12 | Zhang John Z (Officer) | Discretionary sale | 1,212 | $65.53 | $79K |
| 2025-08-11 | Musser Eric S (Officer) | Discretionary sale | 18.9K | $65.31 | $1.2M |
| 2025-08-07 | WEEKS WENDELL P (CEO) | Discretionary sale | 82.1K | $65.19 | $5.4M |
| 2025-08-07 | Musser Eric S (Officer) | Discretionary sale | 20K | $65.88 | $1.3M |
| 2025-07-30 | STEVERSON LEWIS A (Officer) | Discretionary sale | 16.6K | $62.22 | $1M |
| 2025-07-30 | Schlesinger Edward A (CFO) | Discretionary sale | 14.1K | $62.28 | $877K |
| 2025-07-30 | Nelson Avery H III (COO) | Discretionary sale | 36.2K | $62.26 | $2.3M |
| 2025-07-30 | O'Day Michael Paul (Officer) | Discretionary sale | 14.9K | $62.36 | $928K |
| 2025-06-11 | Verkleeren Ronald L (Officer) | Discretionary sale | 20K | $50.52 | $1M |
| 2025-06-06 | Musser Eric S (COO) | Discretionary sale | 20K | $51.11 | $1M |
| 2025-06-02 | Schlesinger Edward A (CFO) | Discretionary sale | 4,464 | $49.85 | $223K |
| 2025-05-29 | Becker Stefan (Officer) | Discretionary sale | 17.1K | $49.68 | $850K |
| 2025-05-29 | Seetharam Soumya (Officer) | Discretionary sale | 6,505 | $50.01 | $325K |
| 2025-05-28 | Zhang John Z (Officer) | Discretionary sale | 9,610 | $49.29 | $474K |
| 2025-05-28 | Seetharam Soumya (Officer) | Discretionary sale | 14.3K | $50.01 | $716K |
| 2025-05-12 | Zhang John Z (Officer) | Discretionary sale | 8,000 | $46.91 | $375K |
| 2025-04-30 | Bell Michael Alan (Other) | Discretionary sale | 20.3K | $44.06 | $893K |
| 2025-02-28 | WEEKS WENDELL P (CEO) | Discretionary sale | 55.8K | $50.11 | $2.8M |
| 2025-02-27 | WEEKS WENDELL P (CEO) | Discretionary sale | 44.2K | $50.04 | $2.2M |
| 2025-02-19 | Schlesinger Edward A (CFO) | Discretionary sale | 4,137 | $52.82 | $219K |
| 2025-02-18 | Zhang John Z (Officer) | Discretionary sale | 14.1K | $52.78 | $745K |
| 2025-01-31 | Musser Eric S (COO) | Discretionary sale | 30K | $51.92 | $1.6M |
| 2025-01-30 | Bell Michael Alan (Other) | Discretionary sale | 2,209 | $49.87 | $110K |
| 2024-11-25 | Bayne John P JR (Other) | Discretionary sale | 8,876 | $49.09 | $436K |
| 2024-11-22 | Bayne John P JR (Other) | Discretionary sale | 5,000 | $48.39 | $242K |
| 2024-11-21 | Curran Martin J (Other) | Discretionary sale | 50K | $47.96 | $2.4M |
“Since trade” compares with the latest insider-implied price, not a market quote; this site carries no market data by design.
Filing hygiene
How to read this
A Form 4 transaction code decides everything. P is an open-market purchase and S an open-market sale; those two are the only codes where an insider chose to trade. A is a grant, M an option exercise or vesting, F shares withheld to cover tax, G a gift. Most “insiders dumped billions” headlines are code F and M mechanics.
Sales flagged 10b5-1 run on a plan the insider adopted in advance; since 2023 every Form 4 carries that flag. Buys have historically predicted returns, sales mostly have not, and this page states filings, not advice.