Michelle L. Gullo - 17 Nov 2025 Form 3 Insider Report for CORNING INC /NY (GLW)

Role: Senior Vice President & CHRO
Signature: Melissa J. Gambol, Power of Attorney
Issuer symbol: GLW
Transactions as of: 17 Nov 2025
Net transactions value: $0
Form type: 3
Filing time: 24 Nov 2025, 16:01:16 UTC
Next filing: 06 Jan 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Gullo Michelle L	Senior Vice President & CHRO	1 RIVERFRONT PLAZA, CORNING	Melissa J. Gambol, Power of Attorney	24 Nov 2025	0002096996

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
holding	GLW	Common Stock						36,000	17 Nov 2025	Direct
holding	GLW	Common Stock - Held by Spouse						44	17 Nov 2025	Held by Spouse	F1

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
holding	GLW	Restricted Stock Unit							17 Nov 2025	Common Stock	918		Direct	F2, F3
holding	GLW	Restricted Stock Unit							17 Nov 2025	Common Stock	76		Held by Spouse	F1, F2, F3
holding	GLW	Performance Share Unit							17 Nov 2025	Common Stock	4,766		Direct	F4, F5
holding	GLW	Performance Share Unit							17 Nov 2025	Common Stock	4,183		Direct	F5, F6
holding	GLW	Restricted Stock Unit							17 Nov 2025	Common Stock	4,378		Direct	F3, F7
holding	GLW	Restricted Stock Unit							17 Nov 2025	Common Stock	3,953		Direct	F3, F8
holding	GLW	Restricted Stock Unit							17 Nov 2025	Common Stock	3,793		Direct	F3, F9

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

Explanation of Responses:

Id	Content
F1	The reporting person disclaims beneficial ownership of all securities held by spouse.
F2	The restricted stock units (RSUs) granted on February 8, 2023 vest 1/3 after 1 year from the grant date and 1/6 every 6 months thereafter until fully vested on the third anniversary of the grant date.
F3	Each restricted stock unit represents a contingent right to receive one share of Corning Incorporated common stock.
F4	Earned PSUs remain restricted until April 15, 2026, when they vest and convert to common stock, subject to service-based vesting requirement.
F5	Each performance share unit represents a contingent right to receive one share of Corning Incorporated common stock.
F6	Earned PSUs remain restricted until April 15, 2027, when they vest and convert to common stock, subject to service-based vesting requirement.
F7	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.
F8	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.
F9	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.