Corning SVP covers taxes with 2,946 GLW shares

Corning Inc. senior vice president and general counsel Michaune D. Tillman reported a routine tax-related share disposition.

Rhea-AI Filing Summary

Corning Inc. senior vice president and general counsel Michaune D. Tillman reported a routine tax-related share disposition. On the vesting of restricted stock, 2,946 shares of common stock were withheld to cover tax withholding obligations, leaving 13,434 shares of common stock held directly after the transaction.

Insider Trade Summary

Exercise Price or Tax Liability: 2,946 shares

Exercise Price or Tax Liability 1 txn

Insider TILLMAN MICHAUNE D

Role SVP and General Counsel

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Common Stock	2,946	$159.96	$471K

Holdings After Transaction: Common Stock — 13,434 shares (Direct)

Footnotes (1)

1. F1. Shares withheld to satisfy the Reporting Person's tax withholding obligations upon the vesting of restricted stock.

Key Figures

Shares withheld for taxes: 2,946 shares Price per share for withholding: $159.96/share Shares held after transaction: 13,434 shares

3 metrics

Shares withheld for taxes 2,946 shares Tax withholding on vesting of restricted stock

Price per share for withholding $159.96/share Value used for tax-withholding disposition

Shares held after transaction 13,434 shares Direct common stock holdings following tax withholding

Key Terms

tax withholding obligations, restricted stock, tax-withholding disposition, Common Stock

4 terms

tax withholding obligations financial

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

restricted stock financial

"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.

tax-withholding disposition financial

"transaction_action: tax-withholding disposition"

A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.

Common Stock financial

"security_title: Common Stock"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did Corning (GLW) report for Michaune D. Tillman?

Corning reported that SVP and general counsel Michaune D. Tillman had 2,946 shares of common stock withheld. The shares were used to satisfy tax withholding obligations that arose when restricted stock vested, rather than being sold on the open market.

Was the Corning (GLW) Form 4 transaction an open-market sale?

No, the Form 4 shows a tax-withholding disposition, not an open-market sale. Shares were withheld by the company to cover tax obligations upon vesting of restricted stock, consistent with the transaction code F and the accompanying footnote description.

How many Corning (GLW) shares were withheld for taxes in this filing?

The filing states that 2,946 shares of Corning common stock were withheld. According to the footnote, these shares satisfied Michaune D. Tillman’s tax withholding obligations triggered when restricted stock vested, reducing the number of shares delivered but not reflecting a market sale.

How many Corning (GLW) shares does Michaune D. Tillman hold after the transaction?

After the tax-withholding disposition, Michaune D. Tillman directly holds 13,434 shares of Corning common stock. This figure reflects the position following the withholding of 2,946 shares for tax obligations tied to the vesting of restricted stock awards.

What does transaction code F mean in the Corning (GLW) Form 4?

Transaction code F indicates payment of an exercise price or tax liability using securities. Here, it denotes shares withheld by Corning to cover Michaune D. Tillman’s tax withholding obligations when restricted stock vested, rather than a discretionary purchase or sale.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 05/05/2026 - 02:42 PM EDT Learn about SEC filing dates

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^*

TILLMAN MICHAUNE D

(Last) (First) (Middle)

ONE 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)
	SVP and General Counsel

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/04/2026

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	05/04/2026		F		2,946(1)	D	$159.96	13,434	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	05/05/2026
	** 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)