Corning (NYSE: GLW) CEO exercises PSUs, RSUs; 165,622 shares withheld

Rhea-AI Filing Summary

Corning Inc. Chairman, CEO and President Wendell P. Weeks exercised derivative awards into common stock and had shares withheld for taxes. He converted 235,610 performance share units and 104,474 restricted stock units into an equal number of common shares. To cover tax obligations, 165,622 common shares were disposed of at $168.27 per share, a tax-withholding transaction rather than an open-market sale. Following these moves, he directly holds 908,353 common shares, along with additional indirect positions reported for his spouse and employee benefit plans.

Insider Trade Summary

340,084 shares exercised/converted

Mixed 13 txns

Insider WEEKS WENDELL P

Role Chairman, CEO and President

Type	Security	Shares	Price	Value
Exercise	Performance Share Unit	235,610	$0.00	--
Exercise	Restricted Stock Unit	104,474	$0.00	--
Exercise	Common Stock	235,610	$0.00	--
Exercise	Common Stock	104,474	$0.00	--
Tax Withholding	Common Stock	165,622	$168.27	$27.87M
holding	Performance Share Unit	--	--	--
holding	Performance Share Unit	--	--	--
holding	Restricted Stock Unit	--	--	--
holding	Restricted Stock Unit	--	--	--
holding	Restricted Stock Unit	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Performance Share Unit — 0 shares (Direct); Restricted Stock Unit — 0 shares (Direct); Common Stock — 969,501 shares (Direct); Common Stock — 9,200 shares (Indirect, Held by Spouse)

Footnotes (1)

1. The reporting person disclaims beneficial ownership of all securities held by spouse. Ownership is represented by units held in a unitized stock fund through the issuer's 401(k) retirement plan as of March 31, 2026. Each performance share unit represents a contingent right to receive one share of Corning Incorporated common stock. Earned PSUs remain restricted until April 15, 2027, when they vest and convert to common stock, subject to service-based vesting requirement. Earned PSUs remain restricted until April 14, 2028, when they vest and convert to common stock, subject to service-based vesting requirement. Each restricted stock unit represents a contingent right to receive one share of Corning Incorporated common stock. 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. 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. The restricted stock units (RSUs) vest 100% on April 16, 2029. Events such as retirement, death, disability, and others specified in the agreement may result in vesting prior to the vesting date. Earned PSUs remain restricted until April 15, 2026, when they vest and convert to common stock, subject to service-based vesting requirement. 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.

Key Figures

PSUs exercised: 235,610 units RSUs exercised: 104,474 units Tax-withheld shares: 165,622 shares +4 more

7 metrics

PSUs exercised 235,610 units Performance share units converted to common stock on April 15, 2026

RSUs exercised 104,474 units Restricted stock units converted to common stock on April 15, 2026

Tax-withheld shares 165,622 shares Common stock withheld for taxes at $168.27 per share

Tax-withholding price $168.27 per share Price used for F-code tax-withholding disposition

Direct common shares after transactions 908,353 shares Direct holdings of Corning common stock following Form 4 transactions

Remaining PSUs (largest grant) 178,486 underlying shares Unvested performance share units, exercise price $0.0000

Remaining RSUs (largest grant) 111,863 underlying shares Unvested restricted stock units, exercise price $0.0000

Key Terms

Performance Share Unit, Restricted Stock Unit, tax-withholding disposition, unitized stock fund, +1 more

5 terms

Performance Share Unit financial

"Each performance share unit represents a contingent right to receive one share"

A performance share unit (PSU) is a form of executive or employee pay that promises shares (or the cash value of shares) only if the company meets specific performance targets over a set period. Think of it like a bonus cheque that only arrives if the company hits agreed goals — it aligns managers’ rewards with business results and signals to investors how leadership is being incentivized to grow value over time.

Restricted Stock Unit financial

"Each restricted stock unit represents a contingent right to receive one share"

A restricted stock unit is a promise from a company to give an employee shares of stock after certain conditions are met, like staying with the company for a set amount of time. It’s like earning a bonus that turns into company stock once you’ve proven your commitment, making it a way to motivate and reward employees.

tax-withholding disposition financial

"Payment of exercise price or tax liability by delivering securities"

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.

unitized stock fund financial

"Ownership is represented by units held in a unitized stock fund"

401(k) retirement plan financial

"through the issuer's 401(k) retirement plan as of March 31, 2026"

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^*

WEEKS WENDELL P

(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)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chairman, CEO and President

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/15/2026

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	04/15/2026		M		235,610	A	$0	969,501	D
Common Stock	04/15/2026		M		104,474	A	$0	1,073,975	D
Common Stock	04/15/2026		F		165,622	D	$168.27	908,353	D
Common Stock								9,200	I	Held by Spouse(1)
Common Stock								7,135.8671(2)	I	Held By Spouse - Emp. Ben. Plan(1)
Common Stock								11,762.8659(2)	I	Trustee U/employee Benefit Plan

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	(3)							(4)	(4)	Common Stock	178,486		178,486	D
Performance Share Unit	(3)							(5)	(5)	Common Stock	60,106		60,106	D
Restricted Stock Unit	(6)							(7)	(7)	Common Stock	111,863		111,863	D
Restricted Stock Unit	(6)							(8)	(8)	Common Stock	86,634		86,634	D
Restricted Stock Unit	(6)							(9)	(9)	Common Stock	30,868		30,868	D
Performance Share Unit	(3)	04/15/2026		M			235,610	(10)	(10)	Common Stock	235,610	$0	0	D
Restricted Stock Unit	(6)	04/15/2026		M			104,474	(11)	(11)	Common Stock	104,474	$0	0	D

Explanation of Responses:

1. The reporting person disclaims beneficial ownership of all securities held by spouse.

2. Ownership is represented by units held in a unitized stock fund through the issuer's 401(k) retirement plan as of March 31, 2026.

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

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

5. Earned PSUs remain restricted until April 14, 2028, when they vest and convert to common stock, subject to service-based vesting requirement.

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

7. 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.

8. 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.

9. The restricted stock units (RSUs) vest 100% on April 16, 2029. Events such as retirement, death, disability, and others specified in the agreement may result in vesting prior to the vesting date.

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

11. 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.

	Melissa J. Gambol, Power of Attorney	04/16/2026
	** 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) CEO Wendell Weeks do in this Form 4 filing?

Wendell Weeks exercised performance share units and restricted stock units into common stock and had shares withheld for taxes. These are compensation-related events, not open-market purchases or sales, and reflect routine equity award vesting and associated tax obligations.

How many Corning (GLW) derivative awards did the CEO convert to common stock?

He converted 235,610 performance share units and 104,474 restricted stock units into the same number of Corning common shares. Each unit represents a contingent right to receive one share of common stock, earned under prior equity incentive arrangements.

Were any Corning (GLW) shares sold on the market in this Form 4?

No open-market sales are shown. Instead, 165,622 shares of common stock were disposed of at $168.27 per share to satisfy tax liabilities. This F-code transaction represents tax withholding by the issuer, not discretionary selling by the CEO.

How many Corning (GLW) shares does the CEO hold after these transactions?

After the reported transactions, Wendell Weeks directly holds 908,353 common shares. The filing also reports additional indirect holdings for his spouse and employee benefit plans, though he disclaims beneficial ownership of shares held directly by his spouse.

Does the Corning (GLW) CEO still have unvested performance and restricted stock units?

Yes. The filing lists remaining performance share units and restricted stock units covering several hundred thousand underlying shares. Footnotes state these awards vest between April 2026 and April 2029, subject to service-based vesting and certain employment-related conditions.

What do the vesting footnotes in the Corning (GLW) Form 4 indicate?

Footnotes explain that earned performance share units remain restricted until scheduled vesting dates in 2026, 2027, and 2028. Restricted stock units vest 100% in 2026, 2027, 2028, and 2029, with possible earlier vesting upon events like retirement or disability.