Eric S. Musser - 04 Feb 2026 Form 4 Insider Report for CORNING INC /NY (GLW)

Role: Retired President
Signature: Melissa J. Gambol, Power of Attorney
Issuer symbol: GLW
Transactions as of: 04 Feb 2026
Net transactions value: -$360,222
Form type: 4
Filing time: 06 Feb 2026, 16:28:16 UTC
Previous filing: 02 Feb 2026
Next filing: 09 Feb 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Musser Eric S	Retired President	ONE RIVERFRONT PLAZA, CORNING	Melissa J. Gambol, Power of Attorney	06 Feb 2026	0001323968

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	GLW	Common Stock	Options Exercise	$0	+610	+3.1%	$0.000000	20,536	04 Feb 2026	Direct	F1
transaction	GLW	Common Stock	Options Exercise	$0	+1,072	+5.2%	$0.000000	21,608	04 Feb 2026	Direct	F1
transaction	GLW	Common Stock	Options Exercise	$0	+1,602	+7.4%	$0.000000	23,210	04 Feb 2026	Direct	F1
transaction	GLW	Common Stock	Tax liability	$360,222	-3,284	-14%	$109.69	19,926	04 Feb 2026	Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	GLW	Performance Share Unit	Options Exercise	$0	-610	-3.6%	$0.000000	16,510	04 Feb 2026	Common Stock	610		Direct	F1, F2
transaction	GLW	Performance Share Unit	Options Exercise	$0	-1,072	-1.6%	$0.000000	67,019	04 Feb 2026	Common Stock	1,072		Direct	F1, F3
transaction	GLW	Performance Share Unit	Options Exercise	$0	-1,602	-1.8%	$0.000000	88,899	04 Feb 2026	Common Stock	1,602		Direct	F1, F4
transaction	GLW	Performance Share Unit	Award	$0	+17,120		$0.000000	17,120	04 Feb 2026	Common Stock	17,120		Direct	F1, F5
transaction	GLW	Performance Share Unit	Award	$0	+30,227	+80%	$0.000000	68,091	04 Feb 2026	Common Stock	30,227		Direct	F1, F6
transaction	GLW	Performance Share Unit	Award	$0	+45,196	+100%	$0.000000	90,501	04 Feb 2026	Common Stock	45,196		Direct	F1, F7

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Each performance share unit represents a contingent right to receive one share of Corning Incorporated common stock.
F2	Vesting to satisfy tax requirement pursuant to the 2025 agreement.
F3	Vesting to satisfy tax requirement pursuant to the 2024 agreement.
F4	Vesting to satisfy tax requirement pursuant to the 2023 agreement.
F5	Performance share units (PSUs) were earned February 4, 2026 per Compensation Committee decision that performance criteria were satisfied for fiscal year 2025 pursuant to the 2025 agreement. Earned PSUs remain restricted until April 14, 2028, when they vest and convert to common stock, subject to service-based vesting requirement.
F6	Performance share units (PSUs) were earned February 4, 2026 per Compensation Committee decision that performance criteria were satisfied for fiscal year 2025 pursuant to the 2024 agreement. Earned PSUs remain restricted until April 15, 2027, when they vest and convert to common stock, subject to service-based vesting requirement.
F7	Performance share units (PSUs) were earned February 4, 2026 per Compensation Committee decision that performance criteria were satisfied for fiscal year 2025 pursuant to the 2023 agreement. Earned PSUs remain restricted until April 15, 2026, when they vest and convert to common stock, subject to service-based vesting requirement.