[Form 4] CORNING INC /NY Insider Trading Activity

Corning Incorporated (GLW) officer equity transactions: On 11/21/2025, a senior vice president in the Emerging Innovations Group reported multiple equity-related transactions in a Form 4.

Rhea-AI Filing Summary

Corning Incorporated (GLW) officer equity transactions: On 11/21/2025, a senior vice president in the Emerging Innovations Group reported multiple equity-related transactions in a Form 4. Several restricted stock units and performance share units were converted to Corning common stock at an exercise price of $0, including 689, 737, 794, and 663 underlying shares. To cover taxes on these awards, 2,883 shares of common stock were disposed of at $79.46 under code “F”. Following these transactions, the reporting person directly owned 55,500 shares of Corning common stock, along with remaining restricted stock unit and performance share unit positions that vest over time, some through 2028.

Insider Trade Summary

2,883 shares exercised/converted

Exercise 11 txns

Insider Verkleeren Ronald L

Role SVP Emerging Innovations Group

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Unit	689	$0.00	$0.00
Exercise	Restricted Stock Unit	737	$0.00	$0.00
Exercise	Performance Share Unit	794	$0.00	$0.00
Exercise	Performance Share Unit	663	$0.00	$0.00
Exercise	Common Stock	689	$0.00	$0.00
Exercise	Common Stock	737	$0.00	$0.00
Exercise	Common Stock	794	$0.00	$0.00
Exercise	Common Stock	663	$0.00	$0.00
Exercise Price or Tax Liability	Common Stock	2,883	$79.46	$229K
holding	Restricted Stock Unit	--	--	--
holding	Restricted Stock Unit	--	--	--

Holdings After Transaction: Restricted Stock Unit — 44,328 contracts for 14,663 underlying shares (Direct); Performance Share Unit — 30,313 contracts (Direct); Common Stock — 55,500 shares (Direct)

Footnotes (8)

1. F1. Each restricted stock unit represents a contingent right to receive one share of Corning Incorporated common stock.
2. 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.
3. F3. 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.
4. F4. 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.
5. 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.
6. F6. Each performance share unit represents a contingent right to receive one share of Corning Incorporated common stock.
7. F7. Earned PSUs remain restricted until April 15, 2026, when they vest and convert to common stock, subject to service-based vesting requirement.
8. F8. Earned PSUs remain restricted until April 15, 2027, when they vest and convert to common stock, subject to service-based vesting requirement.

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Accepted by SEC EDGAR 11/24/2025 - 04:09 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Verkleeren Ronald L

(Last) (First) (Middle)

ONE RIVERFRONT PLAZA

(Street)

CORNING NY 14831

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
CORNING INC /NY [ GLW ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	SVP Emerging Innovations Group

3. Date of Earliest Transaction (Month/Day/Year)
11/21/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	11/21/2025		M		689	A	$0	56,189	D
Common Stock	11/21/2025		M		737	A	$0	56,926	D
Common Stock	11/21/2025		M		794	A	$0	57,720	D
Common Stock	11/21/2025		M		663	A	$0	58,383	D
Common Stock	11/21/2025		F		2,883	D	$79.46	55,500	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Unit	(1)							(2)	(2)	Common Stock	2,476		2,476	D
Restricted Stock Unit	(1)							(3)	(3)	Common Stock	12,187		12,187	D
Restricted Stock Unit	(1)	11/21/2025		M			689	(4)	(4)	Common Stock	689	$0	14,332	D
Restricted Stock Unit	(1)	11/21/2025		M			737	(5)	(5)	Common Stock	737	$0	15,333	D
Performance Share Unit	(6)	11/21/2025		M			794	(7)	(7)	Common Stock	794	$0	16,512	D
Performance Share Unit	(6)	11/21/2025		M			663	(8)	(8)	Common Stock	663	$0	13,801	D

Explanation of Responses:

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

2. 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.

3. 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.

4. 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.

5. 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.

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

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

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

	Melissa J. Gambol, Power of Attorney	11/24/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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