[Form 4] Corning Incorporated Insider Trading Activity

Rhea-AI Filing Summary

John Z. Zhang, Executive Vice President & Chief Commercial and Chief Digital Officer of Corning Incorporated (GLW), reported several equity transactions and outstanding restricted stock units. On 08/08/2025 he acquired 2,476 shares of common stock (code M) at a reported price of $0 and had a separate reported disposition entry of 1,264 shares at $65.77 showing 1,212 shares beneficially owned following that entry. On 08/12/2025 he sold 1,212 shares at a weighted average price of $65.5325, after which the reported direct common stock holding is 0.

Table II lists restricted stock units convertible into common stock: 22,498 (vests 4/15/2027), 24,374 (vests 4/14/2028), 18,884 (vests 4/15/2026), and 2,476 (subject to a multi-step vesting schedule beginning Feb 8, 2023). The total of these RSUs equals 68,232 units, all reported as direct beneficial holdings.

Positive

• Clear disclosure of RSU counts and vesting dates (22,498; 24,374; 18,884; 2,476) totaling 68,232 units
• Weighted-average sale price footnote provides transparent pricing details for the sale transactions

Negative

• Disposition of 1,212 shares on 08/12/2025 at a weighted average price of $65.5325

Insights

Financial Analyst

TL;DR Routine insider activity: RSU vesting and a small sale of shares; no material change to control.

The Form 4 shows scheduled equity compensation converting into common stock and a subsequent small disposition. The largest items are the outstanding restricted stock units totaling 68,232 shares across multi-year vesting dates (2026–2028), which represent future potential equity dilution when settled but are a normal component of executive pay. The sale of 1,212 shares at a weighted average of $65.5325 appears isolated and is documented with a weighted-average sale price footnote. There is no disclosure here of any change in ownership percentage or 10% ownership status.

Corporate Governance Expert

TL;DR Disclosure is clear on vesting schedules and transactions; items reflect compensation realization, not a material governance event.

The filing identifies Zhang as an officer and records multiple RSU awards with explicit vesting dates and one short sequence of market transactions. Footnotes clarify RSU mechanics and provide a weighted-average sale price range for the disposed shares, which supports transparency for Section 16 reporting. No unusual acceleration, related-party transaction, or amendment is disclosed. From a governance perspective, these are routine executive compensation settlements and subsequent sales properly reported.

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

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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^*

Zhang John Z

(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)
	Exec. Vice President & CCDO

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		2,476	A	$0	2,476	D
Common Stock	08/08/2025		F		1,264	D	$65.77	1,212	D
Common Stock	08/12/2025		S		1,212	D	$65.5325(1)	0	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	(2)							(3)	(3)	Common Stock	22,498		22,498	D
Restricted Stock Unit	(2)							(4)	(4)	Common Stock	24,374		24,374	D
Restricted Stock Unit	(2)							(5)	(5)	Common Stock	18,884		18,884	D
Restricted Stock Unit	(2)	08/08/2025		M			2,476	(6)	(6)	Common Stock	2,476	$0	2,476	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 $65.5315 to $65.5350, 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 restricted stock unit represents a contingent right to receive one share of Corning Incorporated common stock.

3. 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.

4. 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.

5. 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.

6. 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 transactions did Corning (GLW) insider John Z. Zhang report?

The Form 4 shows acquisitions on 08/08/2025 (including 2,476 shares acquired) and a sale of 1,212 shares on 08/12/2025 at a weighted average price of $65.5325.

How many restricted stock units does John Z. Zhang hold for GLW and when do they vest?

The filing lists RSUs of 22,498 (vests 4/15/2027), 24,374 (vests 4/14/2028), 18,884 (vests 4/15/2026), and 2,476 (subject to a multi-step vesting schedule beginning Feb 8, 2023).

Did the reporting person retain direct common stock after the transactions?

After the reported sale on 08/12/2025, the form shows a reported direct common stock holding of 0 following that transaction entry.

What role does the reporting person hold at Corning (GLW)?

The Form 4 identifies the reporting person as Executive Vice President & CCDO (John Z. Zhang).

Does the Form 4 explain sale pricing or transaction details?

Yes. A footnote states the sale price reported is a weighted average and gives the per-share price range used to calculate the weighted average between $65.5315 and $65.5350.