Corning (NYSE: GLW) EVP John Z. Zhang sells 15,000 shares

Rhea-AI Filing Summary

Corning Inc. executive John Z. Zhang, Executive Vice President & CCDO, reported an open-market sale of 15,000 shares of Corning common stock on May 6, 2026. The weighted average sale price was $184.6656 per share, with individual trades ranging from $184.51 to $184.82. After this transaction, Zhang directly holds 15,138 shares of Corning common stock.

Insider Trade Summary

Net Seller: 15,000 shares ($2,769,984)

Net Sell 1 txn

Insider Zhang John Z

Role Exec. Vice President & CCDO

Sold 15,000 shs ($2.77M)

Type	Security	Shares	Price	Value
Sale	Common Stock	15,000	$184.6656	$2.77M

Holdings After Transaction: Common Stock — 15,138 shares (Direct, null)

Footnotes (1)

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Key Figures

Shares sold: 15,000 shares Weighted average sale price: $184.6656 per share Price range of trades: $184.51–$184.82 per share +1 more

4 metrics

Shares sold 15,000 shares Open-market sale on May 6, 2026

Weighted average sale price $184.6656 per share Common stock sale by John Z. Zhang

Price range of trades $184.51–$184.82 per share Multiple transactions within the reported sale

Shares held after transaction 15,138 shares Direct ownership following sale

Key Terms

weighted average price, open-market sale, Form 4, Common Stock

4 terms

weighted average price financial

"The price reported in Column 4 is a weighted average price."

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

open-market sale financial

"transaction_action": "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

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.

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.

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^*

Zhang John Z

(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)
	Exec. Vice President & CCDO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/06/2026

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	05/06/2026		S		15,000	D	$184.6656(1)	15,138	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. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $184.51 to $184.82, 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.

	Melissa J. Gambol, Power of Attorney	05/06/2026
	** 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 transaction did John Z. Zhang report at Corning (GLW)?

John Z. Zhang, an executive vice president at Corning, reported selling 15,000 shares of common stock in an open-market transaction. The sale was disclosed as a Form 4 insider filing and reflects a routine portfolio move by a senior officer.

At what price did John Z. Zhang sell Corning (GLW) shares?

Zhang reported a weighted average sale price of $184.6656 per Corning share. According to the filing, individual trades occurred at prices ranging from $184.51 to $184.82, with the company offering to provide full breakdowns of shares sold at each price.

How many Corning (GLW) shares does John Z. Zhang hold after the sale?

Following the reported transaction, Zhang directly holds 15,138 shares of Corning common stock. This figure comes from the Form 4’s post-transaction ownership column, showing his remaining direct equity position after selling 15,000 shares.

Was John Z. Zhang’s Corning (GLW) trade an open-market sale?

Yes. The Form 4 identifies the transaction with code “S” and describes it as an open-market or private sale. This means the shares were sold into the market rather than transferred as a gift, tax withholding, or internal restructuring.

Does the Corning (GLW) Form 4 explain the price range of Zhang’s sale?

The filing states that the reported price is a weighted average and that shares were sold in multiple trades between $184.51 and $184.82. It also notes Zhang will provide full details of shares sold at each price upon request.