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Corning Inc. (GLW)

Corning Inc. (GLW) Insider Trading

Directors, officers and holders of more than 10% of GLW report their trades in its stock on SEC Form 4, within two business days. Each row below is one Form 4 transaction line. The one-letter code says what kind of transaction it was: only P (purchase) and S (sale) are open-market or private trades; awards, option exercises, tax withholding and gifts carry other codes.

Recent Form 4 transactions

The 50 most recent of 786 transactions on file: 0 with code P, 13 with code S and 37 with other codes.

DateInsiderCodeShares
Sep 30, 2026Martin Kevin JA Award228
Sep 30, 2026Ferguson Roger W. Jr.A Award268
Sep 30, 2026CUMMINGS ROBERT F JRA Award268
Sep 30, 2026BURNS STEPHANIEA Award268
Sep 4, 2026Gullo Michelle LS Sale9,874
Jun 30, 2026BURNS STEPHANIEA Award161
Jun 30, 2026Martin Kevin JA Award137
Jun 30, 2026CUMMINGS ROBERT F JRA Award161
Jun 30, 2026Ferguson Roger W. Jr.A Award161
Jun 22, 2026Gullo Michelle LF Tax Payment18,378
Jun 9, 2026WEEKS WENDELL PM Exercise100,000
Jun 9, 2026WEEKS WENDELL PS Sale100,000
Jun 9, 2026WEEKS WENDELL PM Exercise100,000
May 22, 2026Amin JayminM Exercise7,917
May 22, 2026Amin JayminS Sale27,395
May 22, 2026Amin JayminM Exercise7,917
May 15, 2026Nelson Avery H IIIS Sale20,000
May 14, 2026Fang LiM Exercise8,725
May 14, 2026Fang LiM Exercise8,725
May 13, 2026Verkleeren Ronald LS Sale10,000
May 13, 2026Becker StefanG Gift126
May 11, 2026TILLMAN MICHAUNE DS Sale3,260
May 11, 2026Zhang John ZS Sale10,000
May 11, 2026Seetharam SoumyaS Sale20,000
May 8, 2026Becker StefanS Sale21,000
May 8, 2026Gullo Michelle LS Sale5,315
May 8, 2026STEVERSON LEWIS AS Sale27,750
May 7, 2026Schlesinger Edward AS Sale22,562
May 6, 2026Zhang John ZS Sale15,000
May 4, 2026TILLMAN MICHAUNE DF Tax Payment2,946
Apr 29, 2026Becker StefanM Exercise674
Apr 29, 2026Becker StefanM Exercise429
Apr 29, 2026Becker StefanM Exercise619
Apr 29, 2026Becker StefanF Tax Payment2,795
Apr 29, 2026Becker StefanM Exercise1,073
Apr 29, 2026Becker StefanM Exercise429
Apr 29, 2026Becker StefanM Exercise674
Apr 29, 2026Becker StefanM Exercise1,073
Apr 29, 2026Becker StefanM Exercise619
Apr 28, 2026O'Day Michael PaulF Tax Payment3,496
Apr 15, 2026Schlesinger Edward AM Exercise19,088
Apr 15, 2026Seetharam SoumyaM Exercise13,734
Apr 15, 2026Amin JayminM Exercise35,559
Apr 15, 2026Verkleeren Ronald LM Exercise14,332
Apr 15, 2026Seetharam SoumyaM Exercise31,046
Apr 15, 2026WEEKS WENDELL PM Exercise235,610
Apr 15, 2026Zhang John ZM Exercise18,884
Apr 15, 2026Schlesinger Edward AM Exercise43,981
Apr 15, 2026Zhang John ZF Tax Payment31,433
Apr 15, 2026Verkleeren Ronald LM Exercise32,571

The full Form 4 history is on the GLW company page (Insider Trades card, View all).

Questions about this data

Which insider transactions are open-market trades?

Code P (open market or private purchase) and code S (open market or private sale). Code F is shares withheld to pay tax on vesting stock, A is an award from the company, M and X are option exercises and G is a gift. None of those is the insider choosing to buy or sell in the market.

How quickly are insider trades reported?

A Form 4 is due before the end of the second business day after the trade. The date shown is the transaction date from the form.

Who has to file Form 4?

Officers, directors and beneficial owners of more than 10% of a class of the company’s registered equity, under Section 16 of the Securities Exchange Act.

Look up any code in the Form 4 transaction code reference, or read Form 4 codes explained.