Skip to content
sellNotable cluster of 10

John Z Zhang sold $2.0M of GLW

Exec. Vice President & CCDO at CORNING INC /NY. 10,000 shares at an average of $198.34, traded May 11, 2026, filed May 12, 2026.

Warning score
75
Value
$2.0M
10,000 shares
Holdings after
5,138
-66% from before
From 52-week low
+348%
low $46.11, close $206.68
From 52-week high
0%
high $206.68, as of May 11, 2026

Score components

  • Role
    Officer
    +15
  • Trade size
    $2.0M at market
    +25
  • Share of holdings sold
    Sold 66% of holdings
    +20
  • Cluster
    10 insiders selling within 14 days
    +15

What happened after comparable sells

Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.

This signal so far: 1m -10.8%, 3m -19.6%, 6m -.

Price around the trade, and since

From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.

GLWOct 13, 2026 · close 148.54
Since filing May 12, 2026: -24.8%SPY +5.9% · excess -30.7%

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™

Rows in this filing

Every transaction in Form 4 0000024741-26-000219, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
May 11, 2026SOpen-market sale
Common Stock
-10,000$198.34$2.0M5,138May 12, 2026

Related signals

Other insiders at CORNING INC /NY and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
68Notable
GLWsell 2
CORNING INC /NY
Michelle L Gullo
Senior Vice President & CHRO
$1.5M
9,874 shares
-51%
63Notable
GLWsell 2
CORNING INC /NY
Lewis A Steverson
Vice Chairman, EVP and CLAO
$2.0M
13,100 shares
-47%
45Moderate
GLWsell
CORNING INC /NY
Wendell P Weeks
Chairman, CEO and President
$19M
100,000 shares
-10%
55Moderate
GLWsell 9
CORNING INC /NY
Jaymin Amin
SVP and Chief Tech. Officer
$5.3M
27,395 shares
-22%
75Notable
GLWsell 10
CORNING INC /NY
Avery H Nelson III
Executive Vice President & COO
$3.9M
20,000 shares
-22%
60Notable
GLWsell 10
CORNING INC /NY
Ronald L Verkleeren
SVP Emerging Innovations Group
$2.1M
10,000 shares
-17%
65Notable
GLWsell 10
CORNING INC /NY
Soumya Seetharam
Senior Vice President & CDIO
$4.1M
20,000 shares
-44%
55Moderate
GLWsell 10
CORNING INC /NY
Michaune D Tillman
SVP and General Counsel
$675k
3,260 shares
-24%
75Notable
GLWsell 10
CORNING INC /NY
Stefan Becker
SVP, Finance & Corp Controller
$3.9M
21,000 shares
-74%
60Notable
GLWsell 10
CORNING INC /NY
Michelle L Gullo
Senior Vice President & CHRO
$1.0M
5,315 shares
-12%

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

John Z Zhang sold $2.0M of GLW | InsiderTell