Corning (GLW) SVP Stefan Becker converts PSUs/RSUs, withholds shares for taxes

Rhea-AI Filing Summary

Corning SVP Stefan Becker, the company’s Finance and Corporate Controller, reported equity compensation activity involving performance share units (PSUs), restricted stock units (RSUs), and common stock. On April 15, 2026, he exercised 31,046 PSUs and 13,734 RSUs, converting them into the same number of Corning common shares at an exercise price of $0.00.

Following these conversions, 22,861 common shares were disposed of in a tax-withholding transaction at $168.27 per share, leaving Becker with 28,263 common shares held directly. The filing also shows remaining unvested PSUs and RSUs that each represent a contingent right to receive one share of common stock. According to the footnotes, these awards vest between April 15, 2026 and April 16, 2029, subject to service-based vesting and certain events such as retirement, death, or disability.

Insider Trade Summary

44,780 shares exercised/converted

Mixed 10 txns

Insider Becker Stefan

Role SVP, Finance & Corp Controller

Type	Security	Shares	Price	Value
Exercise	Performance Share Unit	31,046	$0.00	--
Exercise	Restricted Stock Unit	13,734	$0.00	--
Exercise	Common Stock	31,046	$0.00	--
Exercise	Common Stock	13,734	$0.00	--
Tax Withholding	Common Stock	22,861	$168.27	$3.85M
holding	Performance Share Unit	--	--	--
holding	Performance Share Unit	--	--	--
holding	Restricted Stock Unit	--	--	--
holding	Restricted Stock Unit	--	--	--
holding	Restricted Stock Unit	--	--	--

Holdings After Transaction: Performance Share Unit — 0 shares (Direct); Restricted Stock Unit — 0 shares (Direct); Common Stock — 37,390 shares (Direct)

Footnotes (1)

1. 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 converted: 31,046 PSUs RSUs converted: 13,734 RSUs Total shares acquired via awards: 44,780 shares +4 more

7 metrics

PSUs converted 31,046 PSUs Exercised into common stock on April 15, 2026

RSUs converted 13,734 RSUs Exercised into common stock on April 15, 2026

Total shares acquired via awards 44,780 shares Common stock from PSU and RSU conversions

Shares withheld for taxes 22,861 shares at $168.27 Code F tax-withholding disposition on April 15, 2026

Shares held after transactions 28,263 shares Direct Corning common stock ownership following Form 4 activity

Remaining PSUs 23,406 and 9,359 underlying shares Unvested performance share units with service-based vesting

Remaining RSUs 14,692; 13,505; 4,846 underlying shares Unvested restricted stock units vesting 2026–2029

Key Terms

Performance Share Unit, Restricted Stock Unit, tax-withholding disposition, service-based vesting requirement, +1 more

5 terms

Performance Share Unit financial

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

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 of Corning Incorporated common stock."

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.

service-based vesting requirement financial

"when they vest and convert to common stock, subject to service-based vesting requirement."

contingent right financial

"represents a contingent right to receive one share of Corning Incorporated common stock."

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^*

Becker Stefan

(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, Finance & Corp Controller

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		31,046	A	$0	37,390	D
Common Stock	04/15/2026		M		13,734	A	$0	51,124	D
Common Stock	04/15/2026		F		22,861	D	$168.27	28,263	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	(1)							(2)	(2)	Common Stock	23,406		23,406	D
Performance Share Unit	(1)							(3)	(3)	Common Stock	9,359		9,359	D
Restricted Stock Unit	(4)							(5)	(5)	Common Stock	14,692		14,692	D
Restricted Stock Unit	(4)							(6)	(6)	Common Stock	13,505		13,505	D
Restricted Stock Unit	(4)							(7)	(7)	Common Stock	4,846		4,846	D
Performance Share Unit	(1)	04/15/2026		M			31,046	(8)	(8)	Common Stock	31,046	$0	0	D
Restricted Stock Unit	(4)	04/15/2026		M			13,734	(9)	(9)	Common Stock	13,734	$0	0	D

Explanation of Responses:

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

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

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

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

5. 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.

6. 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.

7. 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.

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

9. 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 insider transactions did Corning (GLW) SVP Stefan Becker report?

Stefan Becker reported exercising performance share units and restricted stock units into Corning common stock. He converted 31,046 PSUs and 13,734 RSUs into the same number of shares, then had 22,861 shares withheld to cover tax obligations, leaving 28,263 shares held directly afterward.

How many Corning (GLW) shares did Stefan Becker acquire and retain?

Becker acquired 44,780 Corning common shares through PSU and RSU conversions. After 22,861 shares were disposed of to satisfy tax obligations, he directly held 28,263 common shares. These transactions reflect compensation-related equity vesting rather than open-market share purchases or sales.

What is the nature of the tax-withholding transaction in the Corning (GLW) Form 4?

The Form 4 shows a tax-withholding disposition of 22,861 Corning common shares at $168.27 per share. This code F transaction indicates shares were delivered to satisfy tax liabilities arising from equity award vesting or conversion, not an open-market sale initiated for investment reasons.

What performance share units does Corning (GLW) SVP Stefan Becker still hold?

Becker continues to hold performance share units tied to 23,406 and 9,359 underlying Corning common shares. Each PSU represents a contingent right to one share, with vesting and conversion into stock subject to service-based conditions and specified future vesting dates described in the filing footnotes.

What restricted stock units remain outstanding for Corning (GLW) SVP Stefan Becker?

The filing lists remaining restricted stock units representing 14,692, 13,505, and 4,846 underlying Corning common shares. These RSUs vest 100% on April 15, 2026, April 14, 2028, and April 16, 2029, respectively, subject to continued service and certain events described in the award agreements.

How do the Corning (GLW) equity awards for Stefan Becker vest over time?

Earned PSUs and RSUs vest on scheduled dates between April 15, 2026 and April 16, 2029. Vesting is service-based, and events such as retirement, death, disability, or others specified in the agreements may cause earlier vesting and conversion into Corning common stock.