CORNING INC /NY — Director's Dealing 2026

Feb 6, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: CORNING INC /NY (GLW)
CIK: 0000024741
Period of Report: 2026-02-04

Reporting Person: WEEKS WENDELL P (Director, Chairman, CEO and President)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2026-02-04	Common Stock	M	5410	—	Acquired	747779	Direct
2026-02-04	Common Stock	M	2209	—	Acquired	749988	Direct
2026-02-04	Common Stock	M	2854	—	Acquired	752842	Direct
2026-02-04	Common Stock	F	10473	$109.69	Disposed	742369	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2026-02-04	Performance Share Unit	$	A	120365	Acquired		Common Stock (120365)	Direct
2026-02-04	Performance Share Unit	$	A	80500	Acquired		Common Stock (80500)	Direct
2026-02-04	Performance Share Unit	$	A	62315	Acquired		Common Stock (62315)	Direct
2026-02-04	Performance Share Unit	$	M	5410	Disposed		Common Stock (5410)	Direct
2026-02-04	Performance Share Unit	$	M	2209	Disposed		Common Stock (2209)	Direct
2026-02-04	Performance Share Unit	$	M	2854	Disposed		Common Stock (2854)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	9200	Indirect
Common Stock	7120.5432	Indirect
Common Stock	11737.587	Indirect

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Performance Share Unit	$		Common Stock (5733)	5733	Direct

Footnotes

F1: Each performance share unit represents a contingent right to receive one share of Corning Incorporated common stock.

F2: The reporting person disclaims beneficial ownership of all securities held by spouse.

F3: Ownership is represented by units held in a unitized stock fund through the issuer's 401(k) retirement plan as of January 31, 2026.

F4: Performance share units (PSUs) were earned February 7, 2024 per Compensation Committee decision that performance criteria were satisfied for fiscal year 2023 pursuant to the 2023 agreement. Earned PSUs remain restricted until vesting. The earned units will vest 1/3 after 1 year from the February 8, 2023 grant date and 1/6 every 6 months thereafter until fully vested on the third anniversary of the grant date.

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 2023 agreement. Earned PSUs remain restricted until April 15, 2026, 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 2025 agreement. Earned PSUs remain restricted until April 14, 2028, when they vest and convert to common stock, subject to service-based vesting requirement.

F8: Vesting to satisfy tax requirement pursuant to the 2023 agreement.

F9: Vesting to satisfy tax requirements pursuant to the 2025 agreement.

F10: Vesting to satisfy tax requirement pursuant to the 2024 agreement.