[Form 4] Corning Incorporated Insider Trading Activity

Rhea-AI Filing Summary

Eric S. Musser, President of Corning Incorporated (GLW), reported multiple equity transactions on 08/08/2025 and 08/11/2025. On 08/08/2025 he received 3,147 shares at $0 from performance share units and sold 1,607 shares at $65.77, with beneficial ownership reported at 164,670 shares after that trade. On 08/11/2025 he exercised stock options for 18,850 shares at a $19.65 exercise price and subsequently sold the same 18,850 shares at a weighted average price of $65.3148, leaving reported beneficial ownership at 164,670 shares. Table II lists performance share units of 45,305, 37,864 and 3,147 that remain restricted with vesting dates including April 15, 2026 and April 15, 2027. The filing also notes partial earlier accelerated vesting of options granted May 15, 2020.

Positive

• Acquired 18,850 shares via option exercise at a $19.65 exercise price on 08/11/2025
• Converted 3,147 performance share units to common stock at $0 on 08/08/2025
• Performance share units disclosed with explicit vesting dates (April 15, 2026 and April 15, 2027), providing clarity on future equity vesting

Negative

• Sold 18,850 shares on 08/11/2025 at a weighted average price of $65.3148
• Sold 1,607 shares on 08/08/2025 at $65.77
• Reported beneficial ownership after the transactions is 164,670 shares, reflecting insider dispositions

Insights

Securities Analyst

TL;DR: Routine option exercise and immediate sale produced realized shares sold; beneficial ownership reported at 164,670 shares.

The filing documents an exercise of 18,850 stock options at $19.65 on 08/11/2025 followed by the sale of those 18,850 shares at a weighted average price of $65.3148. On 08/08/2025 the reporting person converted 3,147 PSUs to shares at no cash cost and sold 1,607 shares at $65.77. After these transactions reported beneficial ownership is 164,670 shares. From a market-impact perspective, these are sizable transactions by the insider but appear to be exercises and sales of vested or exercisable awards rather than open-market accumulation.

Corporate Governance Expert

TL;DR: Compensation-related vesting and option activity disclosed; PSU vesting schedules remain in effect through 2027.

The Form 4 shows conversion and disposition activity tied to equity awards: performance share units remain outstanding in multiple tranches (45,305 and 37,864 plus 3,147 converted), with explicit restricted-vesting dates of April 15, 2026 and April 15, 2027. The filing also references prior Compensation Committee action that accelerated partial vesting of options granted on May 15, 2020. These disclosures are consistent with standard executive compensation administration and required insider reporting; they do not, on their face, indicate governance irregularities.

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^*

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

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		3,147	A	$0	166,277	D
Common Stock	08/08/2025		F		1,607	D	$65.77	164,670	D
Common Stock	08/11/2025		M		18,850	A	$19.65	183,520	D
Common Stock	08/11/2025		S		18,850	D	$65.3148(1)	164,670	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	(2)							(3)	(3)	Common Stock	45,305		45,305	D
Performance Share Unit	(2)							(4)	(4)	Common Stock	37,864		37,864	D
Performance Share Unit	(2)	08/08/2025		M			3,147	(5)	(5)	Common Stock	3,147	$0	3,147	D
Stock Options (Right to Buy)	$19.65	08/11/2025		M			18,850	(6)	05/15/2030	Common Stock	18,850	$0	0	D

Explanation of Responses:

1. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $65.31 to $65.35, inclusive. The reporting person undertakes to provide to Corning Incorporated, any security holder of Corning Incorporated, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth previously in this footnote.

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

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

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

5. The performance share units (PSUs) earned February 7, 2024 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.

6. On December 2, 2020, the Compensation Committee approved the early vesting of one half of the stock options granted on May 15, 2020. The remaining stock options vested ratably over three years from the grand 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.
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FAQ

What did the Corning (GLW) Form 4 filed by Eric S. Musser report?

The filing reports that Eric S. Musser exercised 18,850 options at $19.65 on 08/11/2025, sold those 18,850 shares at a weighted average of $65.3148, converted 3,147 PSUs to shares at $0 on 08/08/2025, and sold 1,607 shares at $65.77.

How many shares did Eric S. Musser beneficially own after the reported transactions?

The Form 4 shows reported beneficial ownership of 164,670 shares after the transactions.

What performance share units (PSUs) are disclosed on the filing for GLW?

Table II lists PSUs of 45,305, 37,864, and 3,147, with vesting referenced including April 15, 2026 and April 15, 2027.

Were any stock options fully or partially vested or accelerated according to the Form 4?

Yes. The filing notes that options granted on May 15, 2020 had one-half accelerated on December 2, 2020, with remaining options vesting ratably over three years from the grant date.

At what prices were shares sold according to the filing for GLW?

Sales reported include $65.77 for 1,607 shares (08/08/2025) and a weighted average of $65.3148 for 18,850 shares (08/11/2025).