[Form 4] Corning Incorporated Insider Trading Activity

Rhea-AI Filing Summary

Michael Paul O'Day, SVP and GM, Optical Communications at Corning Incorporated (GLW), reported insider activity on 08/08/2025. On that date 1,091 shares were acquired at $0 by conversion of restricted stock units, increasing reported holdings to 36,834 shares. The filing also shows a contemporaneous disposition of 477 shares at $65.77, which reduced reported holdings to 36,357. The report lists outstanding restricted stock units of 6,460, 15,316, and 6,244 with vesting dates of April 15, 2026, April 15, 2027, and April 14, 2028. It also notes RSUs from a February 8, 2023 grant that vest according to a 1/3 then 1/6 schedule until fully vested on the third anniversary.

Positive

• Conversion of 1,091 RSUs at $0 increased reported common stock holdings to 36,834, reflecting routine fulfillment of equity compensation.
• Clear vesting schedule disclosed for RSU grants, including explicit dates and the Feb 8, 2023 vesting cadence, enhancing disclosure transparency.

Negative

• Disposition of 477 shares at $65.77 occurred the same day, reducing reported holdings to 36,357.
• No indication of materiality threshold being met; transactions are small relative to total company outstanding shares and do not indicate a change in control.

Insights

Securities Analyst

TL;DR: Routine executive equity activity: RSU conversion and a small open-market sale on the same day; not a material change to ownership.

The filing records a conversion of 1,091 restricted stock units into common shares at no cash cost and a sale of 477 shares at $65.77 on 08/08/2025. The conversion increased reported holdings to 36,834, and the subsequent sale reduced holdings to 36,357. The form lists multiple outstanding RSU awards with multi-year vesting through 2028, indicating continued equity compensation tied to future service. For investors, this is a routine executive compensation event rather than a signal of a material shift in control or strategy.

Corporate Governance Expert

TL;DR: Transaction appears consistent with standard vesting and sale practices for executives; disclosure is clear on vesting schedules.

The report identifies the reporting person as an officer and documents both the conversion of RSUs and a contemporaneous sale. The filing provides explicit vesting dates and the vesting schedule for the February 8, 2023 grant, supporting transparency around the timing of share delivery. There are no indications in the document of accelerated vesting beyond the specified circumstances or of any related-party arrangements. This aligns with standard governance and disclosure practices for executive equity awards.

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).

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^*

O'Day Michael Paul

(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 and GM, Optical Comm.

3. Date of Earliest Transaction (Month/Day/Year)
08/08/2025

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	08/08/2025		M		1,091	A	$0	36,834	D
Common Stock	08/08/2025		F		477	D	$65.77	36,357	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	6,460		6,460	D
Restricted Stock Unit	(1)							(3)	(3)	Common Stock	15,316		15,316	D
Restricted Stock Unit	(1)							(4)	(4)	Common Stock	6,244		6,244	D
Restricted Stock Unit	(1)	08/08/2025		M			1,091	(5)	(5)	Common Stock	1,091	$0	1,091	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) 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.

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) 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.

	Melissa J. Gambol, Power of Attorney	08/12/2025
	** 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 did GLW insider Michael O'Day do on 08/08/2025?

He converted 1,091 RSUs into common stock at $0 and sold 477 shares at $65.77 on 08/08/2025.

How many shares does Michael O'Day report owning after these transactions?

Reported beneficial ownership was 36,834 shares after the conversion and 36,357 shares after the sale.

What restricted stock units remain outstanding for the reporting person?

RSUs of 6,460; 15,316; and 6,244 are listed with vesting dates in 2026, 2027, and 2028 respectively.

What is the vesting schedule for the February 8, 2023 RSU grant?

The Feb 8, 2023 RSUs vest 1/3 after one year and 1/6 every six months thereafter until fully vested on the third anniversary.

Was the conversion priced or did it occur at no cash cost?

The 1,091 shares acquired by conversion are reported at $0.