Corning SVP & General Counsel sells 3,260 shares

Corning Inc. senior vice president and general counsel Michaune D. Tillman reported an open-market sale of company stock.

Rhea-AI Filing Summary

Corning Inc. senior vice president and general counsel Michaune D. Tillman reported an open-market sale of company stock. On May 11, 2026, Tillman sold 3,260 shares of Corning common stock at a weighted average price of $207.0152 per share, with individual trades ranging from $207.00 to $207.05. Following this transaction, Tillman directly holds 10,174 shares of Corning common stock.

Insider Trade Summary

Net Seller: 3,260 shares

Net Sell 1 txn

Insider TILLMAN MICHAUNE D

Role SVP and General Counsel

Sold 3,260 shs ($675K)

Type	Security	Shares	Price	Value
Sale	Common Stock	3,260	$207.0152	$675K

Holdings After Transaction: Common Stock — 10,174 shares (Direct)

Footnotes (1)

1. F1. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $207.00 to $207.05, 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 range set forth previously in this footnote.

Key Figures

Shares sold: 3,260 shares Weighted average sale price: $207.0152 per share Post-transaction holdings: 10,174 shares +1 more

4 metrics

Shares sold 3,260 shares Open-market sale on May 11, 2026

Weighted average sale price $207.0152 per share Common stock sale on May 11, 2026

Post-transaction holdings 10,174 shares Direct ownership after May 11, 2026 sale

Price range of trades $207.00–$207.05 per share Range disclosed in Form 4 footnote

Key Terms

open-market sale, weighted average price, Form 4, transaction code “S”

4 terms

open-market sale financial

"reported an open-market sale of company stock"

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.

weighted average price financial

"at a weighted average price of $207.0152 per share"

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.

Form 4 regulatory

"The sale was disclosed in a Form 4 insider filing"

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.

transaction code “S” regulatory

"The transaction code “S” and description confirm it was a sale"

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 Michaune D. Tillman, its senior vice president and general counsel, sold 3,260 shares of common stock in an open-market transaction. The sale was disclosed in a Form 4 insider filing with remaining direct ownership of 10,174 shares.

How many Corning (GLW) shares did Michaune D. Tillman sell and at what price?

Michaune D. Tillman sold 3,260 Corning common shares at a weighted average price of $207.0152 per share. According to the filing footnote, individual trades occurred between $207.00 and $207.05 per share in multiple transactions.

What is Michaune D. Tillman’s remaining Corning (GLW) shareholding after the sale?

After the reported sale, Michaune D. Tillman directly holds 10,174 shares of Corning common stock. This post-transaction balance is stated in the Form 4 and reflects Tillman’s remaining direct ownership position following the 3,260-share disposition.

Was the Corning (GLW) insider sale by Michaune D. Tillman an open-market transaction?

Yes. The Form 4 classifies the trade as an open-market sale of Corning common stock. The transaction code “S” and description confirm it was a sale executed in the open market or a private transaction at market-based prices.

What pricing details did the Corning (GLW) Form 4 footnote provide for Tillman’s sale?

The footnote explains that the reported $207.0152 price is a weighted average across multiple trades. Shares were sold in separate transactions within a narrow range from $207.00 to $207.05, and detailed per-trade pricing is available on request.

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

Form 4 Insider Transactions: What Each Field Means →

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Accepted by SEC EDGAR 05/12/2026 - 04:33 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)
05/11/2026

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	05/11/2026	(1)	S		3,260	D	$207.0152	10,174	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 $207.00 to $207.05, 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 range set forth previously in this footnote.

	Melissa J. Gambol, Power of Attorney	05/12/2026
	** 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)