Corning insider activity
What the executives and directors of Corning actually did with their own shares, decoded from their SEC Form 4 filings. Each figure says the stretch of time it covers.
−$112M
net open-market flow, 12 m
0 open-market buys, 12 m
0%
of sale value on 10b5-1 plans, 12 m
1,723 days since an insider bought, whole record
The tape: three years of insider trades
Open-market buy
Discretionary sale
Planned sale (10b5-1)
Reported-price path
Routine
Every marker sits at the 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 grey strip is the routine flow (grants, vestings, tax withholding and gifts) that a headline gets wrong by counting it as selling.
The 212 routine events on the chart, as a list
| Date | Insider | Shares |
|---|---|---|
| Jun 22, 2026 | Gullo Michelle L | 18K |
| Jun 9, 2026 | WEEKS WENDELL P | 100K |
| May 22, 2026 | Amin Jaymin | 7,917 |
| May 14, 2026 | Fang Li | 8,725 |
| May 13, 2026 | Becker Stefan | 126 |
| May 4, 2026 | TILLMAN MICHAUNE D | 2,946 |
| Apr 29, 2026 | Becker Stefan | 5,590 |
| Apr 28, 2026 | O'Day Michael Paul | 3,496 |
| Apr 15, 2026 | WEEKS WENDELL P | 506K |
| Apr 15, 2026 | STEVERSON LEWIS A | 152K |
| Apr 15, 2026 | Schlesinger Edward A | 94K |
| Apr 15, 2026 | Kammerud Jordana Daryl | 28K |
| Apr 15, 2026 | Nelson Avery H III | 88K |
| Apr 15, 2026 | Verkleeren Ronald L | 70K |
| Apr 15, 2026 | Zhang John Z | 93K |
| Apr 15, 2026 | Becker Stefan | 68K |
| Apr 15, 2026 | Amin Jaymin | 76K |
| Apr 15, 2026 | Seetharam Soumya | 62K |
| Apr 15, 2026 | O'Day Michael Paul | 29K |
| Apr 15, 2026 | Gullo Michelle L | 19K |
| Feb 26, 2026 | WEEKS WENDELL P | 154K |
| Feb 9, 2026 | WEEKS WENDELL P | 8,660 |
| Feb 9, 2026 | STEVERSON LEWIS A | 2,664 |
| Feb 9, 2026 | Schlesinger Edward A | 2,138 |
| Feb 9, 2026 | Fang Li | 1,944 |
| Feb 9, 2026 | Nelson Avery H III | 3,369 |
| Feb 9, 2026 | Verkleeren Ronald L | 3,369 |
| Feb 9, 2026 | Zhang John Z | 3,421 |
| Feb 9, 2026 | Becker Stefan | 2,925 |
| Feb 9, 2026 | Amin Jaymin | 3,594 |
| Feb 9, 2026 | Seetharam Soumya | 2,866 |
| Feb 9, 2026 | O'Day Michael Paul | 1,405 |
| Feb 9, 2026 | Gullo Michelle L | 1,357 |
| Feb 4, 2026 | WEEKS WENDELL P | 21K |
| Feb 4, 2026 | Musser Eric S | 6,568 |
| Feb 4, 2026 | STEVERSON LEWIS A | 5,616 |
| Feb 4, 2026 | Schlesinger Edward A | 3,960 |
| Feb 4, 2026 | Kammerud Jordana Daryl | 1,186 |
| Feb 4, 2026 | Fang Li | 6,656 |
| Feb 4, 2026 | Nelson Avery H III | 3,788 |
| Feb 4, 2026 | Verkleeren Ronald L | 2,572 |
| Feb 4, 2026 | Amin Jaymin | 2,894 |
| Feb 4, 2026 | O'Day Michael Paul | 1,434 |
| Feb 4, 2026 | Gullo Michelle L | 772 |
| Jan 29, 2026 | Schlesinger Edward A | 8,925 |
| Jan 15, 2026 | Kammerud Jordana Daryl | 8,646 |
| Jan 2, 2026 | WEEKS WENDELL P | 6,574 |
| Jan 2, 2026 | STEVERSON LEWIS A | 2,194 |
| Jan 2, 2026 | Schlesinger Edward A | 2,070 |
| Jan 2, 2026 | Nelson Avery H III | 2,010 |
| Jan 2, 2026 | Verkleeren Ronald L | 1,150 |
| Jan 2, 2026 | Amin Jaymin | 1,370 |
| Jan 2, 2026 | O'Day Michael Paul | 1,224 |
| Jan 2, 2026 | Gullo Michelle L | 566 |
| Dec 19, 2025 | Verkleeren Ronald L | 2,000 |
| Dec 15, 2025 | O'Day Michael Paul | 1,391 |
| Dec 8, 2025 | Seetharam Soumya | 9,838 |
| Dec 4, 2025 | WEEKS WENDELL P | 24K |
| Dec 3, 2025 | Seetharam Soumya | 17K |
| Nov 21, 2025 | Verkleeren Ronald L | 5,766 |
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.
The chart, in numbers
| Flow | Shares |
|---|---|
| From holdings | 108K |
| Granted | 17K |
| Vested / exercised | 1.2M |
| Withheld for tax | 524K |
| Discretionary sales | 768K |
| Gifts | 47K |
Skin in the game
Directly held shares as reported after each trade, indexed to 100 at the start of the window, up to 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.
The chart, in numbers
| Insider | Start of the window | Latest reported | Indexed, start = 100 |
|---|---|---|---|
| Amin Jaymin | 79K | 94K | 120 |
| Schlesinger Edward A | 53K | 65K | 122.4 |
Who holds what
the 14 largest holdings of 25| Insider | Role | Shares held | Buys 12 m | Sales 12 m | 12 m | Last trade |
|---|---|---|---|---|---|---|
| WEEKS WENDELL P Chairman, CEO and President Last trade Jun 9, 2026 | CEO | 1.6M | – | $40M | net selling over the year: 0 months buying, 2 months selling | Jun 9, 2026 |
| McRae Lawrence D Vice Chairman & Corp. Dev. Off Last trade Mar 21, 2024 | Officer | 232K | – | – | Mar 21, 2024 | |
| Amin Jaymin SVP and Chief Tech. Officer Last trade May 22, 2026 | Officer | 122K | – | $5.3M | net selling over the year: 0 months buying, 1 month selling | May 22, 2026 |
| TOOKES HANSEL E II Last trade Oct 30, 2019 | Other | 93K | – | – | Oct 30, 2019 | |
| Nelson Avery H III Executive Vice President & COO Last trade May 15, 2026 | COO | 70K | – | $4.9M | net selling over the year: 0 months buying, 2 months selling | May 15, 2026 |
| Schlesinger Edward A Exec. Vice President and CFO Last trade May 7, 2026 | CFO | 65K | – | $8.3M | net selling over the year: 0 months buying, 3 months selling | May 7, 2026 |
| WRIGHTON MARK S | Other | 62K | – | – | – | |
| Verkleeren Ronald L SVP Emerging Innovations Group Last trade May 13, 2026 | Officer | 48K | – | $4.1M | net selling over the year: 0 months buying, 2 months selling | May 13, 2026 |
| CLARK RICHARD T | Other | 43K | – | – | – | |
| O'Day Michael Paul SVP and GM, Optical Comm. Last trade Feb 2, 2026 | Officer | 39K | – | $558K | net selling over the year: 0 months buying, 1 month selling | Feb 2, 2026 |
| Capps Cheryl C Last trade May 1, 2023 | Other | 32K | – | – | May 1, 2023 | |
| Seetharam Soumya Senior Vice President & CDIO Last trade May 11, 2026 | Officer | 26K | – | $5.6M | net selling over the year: 0 months buying, 2 months selling | May 11, 2026 |
| BLAIR DONALD W | Other | 17K | – | – | – | |
| Kammerud Jordana Daryl SVP Last trade Feb 9, 2026 | Officer | 16K | – | $3.8M | net selling over the year: 0 months buying, 1 month selling | Feb 9, 2026 |
Open-market trade log
the 60 most recent of 951| Date | Insider | Type | Shares | Price | Value | Since trade | Filed |
|---|---|---|---|---|---|---|---|
| Sep 4, 2026 | Gullo Michelle L (Officer) 9,874 shares $152.29 +0.0% since trade filed Sep 8, 2026 | Discretionary sale | 9,874 | $152.29 | $1.5M | +0.0% | Sep 8, 2026 |
| Aug 28, 2026 | STEVERSON LEWIS A (Officer) 13K shares $151.29 +0.7% since trade filed Aug 31, 2026 | Discretionary sale | 13K | $151.29 | $2.0M | +0.7% | Aug 31, 2026 |
| Jun 9, 2026 | WEEKS WENDELL P (CEO) 100K shares $186.46 −18.3% since trade filed Jun 9, 2026 | Discretionary sale | 100K | $186.46 | $19M | −18.3% | Jun 9, 2026 |
| May 22, 2026 | Amin Jaymin (Officer) 27K shares $192.14 −20.7% since trade filed May 26, 2026 | Discretionary sale | 27K | $192.14 | $5.3M | −20.7% | May 26, 2026 |
| May 15, 2026 | Nelson Avery H III (COO) 20K shares $195.93 −22.3% since trade filed May 18, 2026 | Discretionary sale | 20K | $195.93 | $3.9M | −22.3% | May 18, 2026 |
| May 13, 2026 | Verkleeren Ronald L (Officer) 10K shares $207.77 −26.7% since trade filed May 14, 2026 | Discretionary sale | 10K | $207.77 | $2.1M | −26.7% | May 14, 2026 |
| May 11, 2026 | Zhang John Z (Officer) 10K shares $198.34 −23.2% since trade filed May 12, 2026 | Discretionary sale | 10K | $198.34 | $2.0M | −23.2% | May 12, 2026 |
| May 11, 2026 | Seetharam Soumya (Officer) 20K shares $206.23 −26.2% since trade filed May 12, 2026 | Discretionary sale | 20K | $206.23 | $4.1M | −26.2% | May 12, 2026 |
| May 11, 2026 | TILLMAN MICHAUNE D (Officer) 3,260 shares $207.02 −26.4% since trade filed May 12, 2026 | Discretionary sale | 3,260 | $207.02 | $675K | −26.4% | May 12, 2026 |
| May 8, 2026 | STEVERSON LEWIS A (Officer) 28K shares $196.06 −22.3% since trade filed May 8, 2026 | Discretionary sale | 28K | $196.06 | $5.4M | −22.3% | May 8, 2026 |
| May 8, 2026 | Becker Stefan (Officer) 21K shares $188.08 −19.0% since trade filed May 8, 2026 | Discretionary sale | 21K | $188.08 | $3.9M | −19.0% | May 8, 2026 |
| May 8, 2026 | Gullo Michelle L (Officer) 5,315 shares $189.03 −19.4% since trade filed May 8, 2026 | Discretionary sale | 5,315 | $189.03 | $1.0M | −19.4% | May 8, 2026 |
| May 7, 2026 | Schlesinger Edward A (CFO) 23K shares $186.08 −18.2% since trade filed May 7, 2026 | Discretionary sale | 23K | $186.08 | $4.2M | −18.2% | May 7, 2026 |
| May 6, 2026 | Zhang John Z (Officer) 15K shares $184.67 −17.5% since trade filed May 6, 2026 | Discretionary sale | 15K | $184.67 | $2.8M | −17.5% | May 6, 2026 |
| Feb 26, 2026 | WEEKS WENDELL P (CEO) 138K shares $155.37 −2.0% since trade filed Feb 27, 2026 | Discretionary sale | 138K | $155.37 | $21M | −2.0% | Feb 27, 2026 |
| Feb 13, 2026 | Gullo Michelle L (Officer) 587 shares $131.11 +16.2% since trade filed Feb 13, 2026 | Discretionary sale | 587 | $131.11 | $77K | +16.2% | Feb 13, 2026 |
| Feb 12, 2026 | Zhang John Z (Officer) 1,531 shares $133.75 +13.9% since trade filed Feb 12, 2026 | Discretionary sale | 1,531 | $133.75 | $205K | +13.9% | Feb 12, 2026 |
| Feb 12, 2026 | Gullo Michelle L (Officer) 44 shares $135.83 +12.1% since trade filed Feb 13, 2026 | Discretionary sale | 44 | $135.83 | $6K | +12.1% | Feb 13, 2026 |
| Feb 11, 2026 | Nelson Avery H III (COO) 1,583 shares $128.74 +18.3% since trade filed Feb 12, 2026 | Discretionary sale | 1,583 | $128.74 | $204K | +18.3% | Feb 12, 2026 |
| Feb 10, 2026 | STEVERSON LEWIS A (Officer) 15K shares $130.22 +17.0% since trade filed Feb 11, 2026 | Discretionary sale | 15K | $130.22 | $2.0M | +17.0% | Feb 11, 2026 |
| Feb 9, 2026 | Musser Eric S (Other) 15K shares $130.25 +16.9% since trade filed Feb 9, 2026 | Discretionary sale | 15K | $130.25 | $2.0M | +16.9% | Feb 9, 2026 |
| Feb 9, 2026 | Kammerud Jordana Daryl (Officer) 30K shares $127.67 +19.3% since trade filed Feb 9, 2026 | Discretionary sale | 30K | $127.67 | $3.8M | +19.3% | Feb 9, 2026 |
| Feb 9, 2026 | Nelson Avery H III (COO) 6,262 shares $129.79 +17.3% since trade filed Feb 11, 2026 | Discretionary sale | 6,262 | $129.79 | $813K | +17.3% | Feb 11, 2026 |
| Feb 4, 2026 | Fang Li (Officer) 9,797 shares $113.51 +34.2% since trade filed Feb 5, 2026 | Discretionary sale | 9,797 | $113.51 | $1.1M | +34.2% | Feb 5, 2026 |
| Feb 2, 2026 | Musser Eric S (Other) 25K shares $110.00 +38.5% since trade filed Feb 2, 2026 | Discretionary sale | 25K | $110.00 | $2.8M | +38.5% | Feb 2, 2026 |
| Feb 2, 2026 | O'Day Michael Paul (Officer) 5,051 shares $110.52 +37.8% since trade filed Feb 2, 2026 | Discretionary sale | 5,051 | $110.52 | $558K | +37.8% | Feb 2, 2026 |
| Jan 29, 2026 | Schlesinger Edward A (CFO) 21K shares $104.55 +45.7% since trade filed Jan 29, 2026 | Discretionary sale | 21K | $104.55 | $2.2M | +45.7% | Jan 29, 2026 |
| Jan 29, 2026 | Gullo Michelle L (Officer) 44 shares $102.40 +48.7% since trade filed Jan 30, 2026 | Discretionary sale | 44 | $102.40 | $5K | +48.7% | Jan 30, 2026 |
| Dec 10, 2025 | Verkleeren Ronald L (Officer) 21K shares $94.69 +60.8% since trade filed Dec 11, 2025 | Discretionary sale | 21K | $94.69 | $2.0M | +60.8% | Dec 11, 2025 |
| Dec 10, 2025 | Seetharam Soumya (Officer) 17K shares $90.78 +67.8% since trade filed Dec 11, 2025 | Discretionary sale | 17K | $90.78 | $1.5M | +67.8% | Dec 11, 2025 |
| Oct 31, 2025 | STEVERSON LEWIS A (Officer) 23K shares $89.05 +71.0% since trade filed Nov 3, 2025 | Discretionary sale | 23K | $89.05 | $2.1M | +71.0% | Nov 3, 2025 |
| Oct 31, 2025 | Schlesinger Edward A (CFO) 21K shares $91.25 +66.9% since trade filed Nov 3, 2025 | Discretionary sale | 21K | $91.25 | $1.9M | +66.9% | Nov 3, 2025 |
| Oct 29, 2025 | Musser Eric S (Other) 100K shares $90.17 +68.9% since trade filed Oct 30, 2025 | Discretionary sale | 100K | $90.17 | $9.0M | +68.9% | Oct 30, 2025 |
| Oct 29, 2025 | Becker Stefan (Officer) 12K shares $91.28 +66.8% since trade filed Oct 30, 2025 | Discretionary sale | 12K | $91.28 | $1.1M | +66.8% | Oct 30, 2025 |
| Sep 17, 2025 | Amin Jaymin (Officer) 18K shares $77.18 +97.3% since trade filed Sep 18, 2025 | Discretionary sale | 18K | $77.18 | $1.4M | +97.3% | Sep 18, 2025 |
| Sep 4, 2025 | Musser Eric S (Officer) 20K shares $70.23 +116.8% since trade filed Sep 4, 2025 | Discretionary sale | 20K | $70.23 | $1.4M | +116.8% | Sep 4, 2025 |
| Aug 12, 2025 | Zhang John Z (Officer) 1,212 shares $65.53 +132.4% since trade filed Aug 12, 2025 | Discretionary sale | 1,212 | $65.53 | $79K | +132.4% | Aug 12, 2025 |
| Aug 11, 2025 | Musser Eric S (Officer) 19K shares $65.31 +133.2% since trade filed Aug 12, 2025 | Discretionary sale | 19K | $65.31 | $1.2M | +133.2% | Aug 12, 2025 |
| Aug 7, 2025 | WEEKS WENDELL P (CEO) 82K shares $65.19 +133.6% since trade filed Aug 8, 2025 | Discretionary sale | 82K | $65.19 | $5.4M | +133.6% | Aug 8, 2025 |
| Aug 7, 2025 | Musser Eric S (Officer) 20K shares $65.88 +131.2% since trade filed Aug 8, 2025 | Discretionary sale | 20K | $65.88 | $1.3M | +131.2% | Aug 8, 2025 |
| Jul 30, 2025 | STEVERSON LEWIS A (Officer) 17K shares $62.22 +144.8% since trade filed Jul 31, 2025 | Discretionary sale | 17K | $62.22 | $1.0M | +144.8% | Jul 31, 2025 |
| Jul 30, 2025 | Schlesinger Edward A (CFO) 14K shares $62.28 +144.5% since trade filed Jul 31, 2025 | Discretionary sale | 14K | $62.28 | $877K | +144.5% | Jul 31, 2025 |
| Jul 30, 2025 | Nelson Avery H III (COO) 36K shares $62.26 +144.6% since trade filed Jul 31, 2025 | Discretionary sale | 36K | $62.26 | $2.3M | +144.6% | Jul 31, 2025 |
| Jul 30, 2025 | O'Day Michael Paul (Officer) 15K shares $62.36 +144.2% since trade filed Jul 31, 2025 | Discretionary sale | 15K | $62.36 | $928K | +144.2% | Jul 31, 2025 |
| Jun 11, 2025 | Verkleeren Ronald L (Officer) 20K shares $50.52 +201.4% since trade filed Jun 12, 2025 | Discretionary sale | 20K | $50.52 | $1.0M | +201.4% | Jun 12, 2025 |
| Jun 6, 2025 | Musser Eric S (COO) 20K shares $51.11 +198.0% since trade filed Jun 10, 2025 | Discretionary sale | 20K | $51.11 | $1.0M | +198.0% | Jun 10, 2025 |
| Jun 2, 2025 | Schlesinger Edward A (CFO) 4,464 shares $49.85 +205.5% since trade filed Jun 4, 2025 | Discretionary sale | 4,464 | $49.85 | $223K | +205.5% | Jun 4, 2025 |
| May 29, 2025 | Becker Stefan (Officer) 17K shares $49.68 +206.5% since trade filed May 29, 2025 | Discretionary sale | 17K | $49.68 | $850K | +206.5% | May 29, 2025 |
| May 29, 2025 | Seetharam Soumya (Officer) 6,505 shares $50.01 +204.5% since trade filed Jun 2, 2025 | Discretionary sale | 6,505 | $50.01 | $325K | +204.5% | Jun 2, 2025 |
| May 28, 2025 | Zhang John Z (Officer) 9,610 shares $49.29 +209.0% since trade filed May 29, 2025 | Discretionary sale | 9,610 | $49.29 | $474K | +209.0% | May 29, 2025 |
| May 28, 2025 | Seetharam Soumya (Officer) 14K shares $50.01 +204.5% since trade filed May 29, 2025 | Discretionary sale | 14K | $50.01 | $716K | +204.5% | May 29, 2025 |
| May 12, 2025 | Zhang John Z (Officer) 8,000 shares $46.91 +224.6% since trade filed May 13, 2025 | Discretionary sale | 8,000 | $46.91 | $375K | +224.6% | May 13, 2025 |
| Apr 30, 2025 | Bell Michael Alan (Other) 20K shares $44.06 +245.6% since trade filed Apr 30, 2025 | Discretionary sale | 20K | $44.06 | $893K | +245.6% | Apr 30, 2025 |
| Feb 28, 2025 | WEEKS WENDELL P (CEO) 56K shares $50.11 +203.9% since trade filed Mar 3, 2025 | Discretionary sale | 56K | $50.11 | $2.8M | +203.9% | Mar 3, 2025 |
| Feb 27, 2025 | WEEKS WENDELL P (CEO) 44K shares $50.04 +204.3% since trade filed Mar 3, 2025 | Discretionary sale | 44K | $50.04 | $2.2M | +204.3% | Mar 3, 2025 |
| Feb 19, 2025 | Schlesinger Edward A (CFO) 4,137 shares $52.82 +188.3% since trade filed Feb 21, 2025 | Discretionary sale | 4,137 | $52.82 | $219K | +188.3% | Feb 21, 2025 |
| Feb 18, 2025 | Zhang John Z (Officer) 14K shares $52.78 +188.5% since trade filed Feb 19, 2025 | Discretionary sale | 14K | $52.78 | $745K | +188.5% | Feb 19, 2025 |
| Jan 31, 2025 | Musser Eric S (COO) 30K shares $51.92 +193.3% since trade filed Feb 3, 2025 | Discretionary sale | 30K | $51.92 | $1.6M | +193.3% | Feb 3, 2025 |
| Jan 30, 2025 | Bell Michael Alan (Other) 2,209 shares $49.87 +205.4% since trade filed Jan 31, 2025 | Discretionary sale | 2,209 | $49.87 | $110K | +205.4% | Jan 31, 2025 |
| Nov 25, 2024 | Bayne John P JR (Other) 8,876 shares $49.09 +210.2% since trade filed Nov 26, 2024 | Discretionary sale | 8,876 | $49.09 | $436K | +210.2% | Nov 26, 2024 |
“Since trade” compares with the latest insider-implied price, not a market quote: these pages are built from filings alone. A role here is the one on that day's Form 4, so somebody promoted since appears under both titles.
Filing hygiene
444 Forms 4, 3 years
1 filed late
2 amendments
1.8 avg. days to file
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.