[Form 4] CORNING INC /NY Insider Trading Activity

Rhea-AI Filing Summary

Corning Inc. (GLW) Director/officer Eric S. Musser reported multiple equity transactions dated 09/30/2025. He received 525 performance-share units and 1,132 restricted-stock units that vested (recorded as acquisitions at $0), and reported sales of 269 and 1,132 shares at $82.03 per share. Following the transactions his direct common-stock holdings were reported at 146,058 shares. The Form 4 discloses forfeitures at retirement of 2,622 PSUs and 8,234 RSUs and shows remaining outstanding PSUs and RSUs by vesting schedule through 2028.

Positive

• Received 1,657 equity units via vesting (525 PSUs + 1,132 RSUs) converted at $0
• Direct ownership reported at 146,058 shares after the transactions, providing transparency on insider holdings
• Detailed vesting schedule disclosed (PSUs vesting April 15, 2026/2027; RSUs vesting April 15, 2026/2027 and April 14, 2028)

Negative

• Forfeiture of 2,622 PSUs at retirement reduced potential future dilution/benefit
• Forfeiture of 8,234 RSUs at retirement reduced potential future equity awards
• Reported sales of 1,401 shares (269 + 1,132) at $82.03 reduced the officer's immediately liquid holdings

Insights

Corporate Governance Expert

TL;DR: Officer transactions largely reflect scheduled vesting and some sales, with retirement-related forfeitures disclosed.

The filing shows routine compensation vesting (PSUs and RSUs converting to shares at $0) and contemporaneous open-market sales recorded at $82.03 for specific lots. The report quantifies post-transaction direct holdings at 146,058 shares and lists remaining restricted awards with vesting dates through April 2028. Disclosed forfeitures of 2,622 PSUs and 8,234 RSUs are explicitly tied to retirement treatment.

This is material to governance and insider-ownership tracking because it updates share counts, vesting schedules, and the officer's net change in holdings without introducing additional agreements or new compensation terms.

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

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

1. Name and Address of Reporting Person^*

Musser Eric S

(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
	Officer (give title below)	X	Other (specify below)
			Retired President

3. Date of Earliest Transaction (Month/Day/Year)
09/30/2025

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	09/30/2025		M		525	A	$0	145,195	D
Common Stock	09/30/2025		F		269	D	$82.03	144,926	D
Common Stock	09/30/2025		M		1,132	A	$0	146,058	D
Common Stock	09/30/2025		F		1,132	D	$82.03	144,926	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
Performance Share Unit	(1)							(2)	(2)	Common Stock	45,305		45,305	D
Performance Share Unit	(1)							(3)	(3)	Common Stock	37,864		37,864	D
Restricted Stock Unit	(4)							(5)	(5)	Common Stock	41,835		41,835	D
Restricted Stock Unit	(4)							(6)	(6)	Common Stock	38,983		38,983	D
Performance Share Unit	(1)	09/30/2025		M			525	(7)	(7)	Common Stock	525	$0	0(8)	D
Restricted Stock Unit	(4)	09/30/2025		M			1,132	(9)	(9)	Common Stock	1,132	$0	23,572(10)	D

Explanation of Responses:

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

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

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

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

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. 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.

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

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

9. 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.

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

	Melissa J. Gambol, Power of Attorney	10/02/2025
	** 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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FAQ

What transactions did Eric S. Musser report on Form 4 for GLW?

The Form 4 reports receipt of 525 PSUs and 1,132 RSUs (vested at $0) and sales of 269 and 1,132 shares at $82.03 on 09/30/2025.

How many shares does Musser directly own after these transactions?

The filing shows Musser directly beneficially owns 146,058 shares following the reported transactions.

Were any equity awards forfeited or adjusted?

Yes. The filing discloses forfeiture of 2,622 PSUs and 8,234 RSUs in connection with retirement.

When do the remaining PSUs and RSUs vest?

Disclosed vesting dates include April 15, 2026, April 15, 2027, and April 14, 2028 for various outstanding awards.

What price were the reported share sales executed at?

The reported sales were executed at $82.03 per share.