Eric S. Musser - 30 Sep 2025 Form 4 Insider Report for CORNING INC /NY (GLW)

Reporting relationship: Retired President
Issuer ticker: GLW
Reported as of: 30 Sep 2025
Net transaction value: -$114,924
SEC form: 4
Accepted by SEC: 02 Oct 2025, 16:00:48 UTC
Prior SEC filing: 07 Oct 2025
Next SEC filing: 30 Oct 2025
Source filing: View source filing
Reporting owner signature: Melissa J. Gambol, Power of Attorney

Key filing fact

Eric S. Musser filed Form 4 for CORNING INC /NY (GLW) on 02 Oct 2025.

Key facts

This page summarizes Eric S. Musser's Form 4 filing for CORNING INC /NY (GLW).
6 reported transactions and 6 derivative rows are listed below.
Accepted by SEC: 02 Oct 2025, 16:00.

Change

Previous filing in this sequence was filed on 07 Oct 2025.
Current net transaction value: -$114,924.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001323968 Primary reporting owner

Musser Eric S

Relationship: Retired President
Address: ONE RIVERFRONT PLAZA, CORNING
Signature: Melissa J. Gambol, Power of Attorney
Signature date: 02 Oct 2025

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

GLW transaction

Common Stock

Options Exercise

Transaction value: $0
Shares: +525
Change %: +0.36%
Price: $0.000000
Shares after: 145,195
Date: 30 Sep 2025
Ownership: Direct

GLW transaction

Common Stock

Tax liability

Transaction value: $22,066
Shares: -269
Change %: -0.19%
Price: $82.03
Shares after: 144,926
Date: 30 Sep 2025
Ownership: Direct

GLW transaction

Common Stock

Options Exercise

Transaction value: $0
Shares: +1,132
Change %: +0.78%
Price: $0.000000
Shares after: 146,058
Date: 30 Sep 2025
Ownership: Direct

GLW transaction

Common Stock

Tax liability

Transaction value: $92,858
Shares: -1,132
Change %: -0.78%
Price: $82.03
Shares after: 144,926
Date: 30 Sep 2025
Ownership: Direct

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

GLW transaction Derivative

Performance Share Unit

Options Exercise

Transaction value: $0
Shares: -525
Change %: -100%
Price: $0.000000
Shares after: 0
Date: 30 Sep 2025
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 525
Exercise price
Footnotes: F1, F7, F8

GLW transaction Derivative

Restricted Stock Unit

Options Exercise

Transaction value: $0
Shares: -1,132
Change %: -4.6%
Price: $0.000000
Shares after: 23,572
Date: 30 Sep 2025
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 1,132
Exercise price
Footnotes: F4, F9, F10

GLW holding Derivative

Performance Share Unit

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 45,305
Date: 30 Sep 2025
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 45,305
Exercise price
Footnotes: F1, F2

GLW holding Derivative

Performance Share Unit

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 37,864
Date: 30 Sep 2025
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 37,864
Exercise price
Footnotes: F1, F3

GLW holding Derivative

Restricted Stock Unit

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 41,835
Date: 30 Sep 2025
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 41,835
Exercise price
Footnotes: F4, F5

GLW holding Derivative

Restricted Stock Unit

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 38,983
Date: 30 Sep 2025
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 38,983
Exercise price
Footnotes: F4, F6

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 10 footnotes

Footnote F1

Each performance share unit represents a contingent right to receive one share of Corning Incorporated common stock.

Footnote F2

Earned PSUs remain restricted until April 15, 2026, when they vest and convert to common stock, subject to service-based vesting requirement.

Footnote F3

Earned PSUs remain restricted until April 15, 2027, when they vest and convert to common stock, subject to service-based vesting requirement.

Footnote F4

Each restricted stock unit represents a contingent right to receive one share of Corning Incorporated common stock.

Footnote F5

The restricted stock units (RSUs) vest 100% on April 15, 2027. Events such as retirement, death, disability, and others specified in the agreement may result in vesting prior to the vesting date.

Footnote F6

The restricted stock units (RSUs) vest 100% on April 15, 2026. Events such as retirement, death, disability, and others specified in the agreement may result in vesting prior to the vesting date.

Footnote F7

Performance Share Units (PSU) vested on 9/30/25 pursuant to the 2/8/23 agreement.

Footnote F8

The balance represents the forfeiture of 2,622 PSUs at retirement.

Footnote F9

The restricted stock units (RSUs) vest 100% on April 14, 2028. Events such as retirement, death, disability, and others specified in the agreement may result in vesting prior to the vesting date.

Footnote F10

The balance represents the forfeiture of 8,234 RSUs at retirement.