Corning (NYSE: GLW) SVP meets tax duty with 18,378 withheld shares

Rhea-AI Filing Summary

Corning Inc. Senior Vice President & CHRO Michelle L. Gullo reported a tax-related share disposition in company stock. On the reported date, 18,378 shares of Corning common stock were withheld to cover her tax withholding obligations when restricted stock vested, rather than being sold on the open market.

Following this tax-withholding event, she directly holds 19,258 shares of Corning common stock.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Gullo Michelle L

Role Senior Vice President & CHRO

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock	18,378	$209.83	$3.86M

Holdings After Transaction: Common Stock — 19,258 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

Tax-withheld shares: 18,378 shares Price per share (withholding reference): $209.83 per share Shares held after transaction: 19,258 shares

3 metrics

Tax-withheld shares 18,378 shares Shares withheld to satisfy tax obligations on restricted stock vesting

Price per share (withholding reference) $209.83 per share Reported transaction price per share for withheld common stock

Shares held after transaction 19,258 shares Direct ownership following tax-withholding disposition

Key Terms

tax withholding obligations, restricted stock, Form 4

3 terms

tax withholding obligations financial

"Shares withheld to satisfy the Reporting Person's tax withholding obligations"

restricted stock financial

"tax withholding obligations upon the vesting of restricted stock"

Shares granted to an individual that carry limits on transfer or sale until certain conditions are met, such as staying with the company for a set time or hitting performance targets. Think of them as a locked gift that gradually opens; for investors they matter because they affect how many shares may enter the market later, signal management incentives and potential dilution, and reveal confidence in future company performance.

Form 4 regulatory

"INSIDER FILING DATA (Form 4)"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

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Form 4 Insider Transactions: What Each Field Means →

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^*

Gullo Michelle L

(Last) (First) (Middle)

1 RIVERFRONT PLAZA

(Street)

CORNING NEW YORK 14831

(City) (State) (Zip)

UNITED STATES

(Country)

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)
	Senior Vice President & CHRO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/22/2026

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

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

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

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	06/22/2026		F		18,378(1)	D	$209.83	19,258	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

Explanation of Responses:

1. Shares withheld to satisfy the Reporting Person's tax withholding obligations upon the vesting of restricted stock.

	Melissa J. Gambol, Power of Attorney	06/23/2026
	** 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.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What did Corning (GLW) executive Michelle L. Gullo report in this Form 4?

Michelle L. Gullo reported that 18,378 Corning common shares were disposed of to satisfy tax withholding obligations upon the vesting of restricted stock. This was a non-market transaction and not an open-market sale of shares.

Were Michelle L. Gullo’s Corning (GLW) shares sold on the open market?

No, the 18,378 shares were not sold on the open market. They were withheld by the company to cover Michelle L. Gullo’s tax withholding obligations triggered by the vesting of restricted stock awards.

How many Corning (GLW) shares does Michelle L. Gullo hold after this Form 4 event?

After the tax-withholding disposition, Michelle L. Gullo directly holds 19,258 shares of Corning common stock. This figure reflects her reported direct ownership immediately following the restricted stock vesting and associated tax withholding.

What does transaction code "F" mean in Michelle L. Gullo’s Corning Form 4?

Transaction code “F” indicates payment of an exercise price or tax liability by delivering securities. In this case, 18,378 Corning shares were withheld to satisfy Michelle L. Gullo’s tax withholding obligations tied to restricted stock vesting.

Does this Corning (GLW) Form 4 indicate any option exercises or derivative transactions?

This Form 4 does not report any option exercises or other derivative transactions. It only shows a non-derivative transaction where shares were withheld to cover Michelle L. Gullo’s tax withholding obligations related to vested restricted stock.