# EDGAR Filing Document

**Accession Number:** 0000024741
**File Stem:** 0001206774-26-000149
**Filing Date:** 2026-3
**Character Count:** 6334
**Document Hash:** 47f31b252be474ba6094d79871d5e953
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001206774-26-000149.hdr.sgml**: 20260320

**ACCESSION NUMBER**: 0001206774-26-000149

**CONFORMED SUBMISSION TYPE**: DEFA14A

**PUBLIC DOCUMENT COUNT**: 9

**FILED AS OF DATE**: 20260320

**DATE AS OF CHANGE**: 20260320

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** CORNING INC /NY
- **CENTRAL INDEX KEY:** 0000024741
- **STANDARD INDUSTRIAL CLASSIFICATION:** DRAWING AND INSULATING NONFERROUS WIRE [3357]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 160393470
- **STATE OF INCORPORATION:** NY
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** DEFA14A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-03247
- **FILM NUMBER:** 26776166

**BUSINESS ADDRESS:**
- **STREET 1:** ONE RIVERFRONT PLAZA
- **CITY:** CORNING
- **STATE:** NY
- **ZIP:** 14831
- **BUSINESS PHONE:** 6079749000

**MAIL ADDRESS:**
- **STREET 1:** ONE RIVERFRONT PLAZA
- **CITY:** CORNING
- **STATE:** NY
- **ZIP:** 14831

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** CORNING GLASS WORKS
- **DATE OF NAME CHANGE:** 19890512

**UNITED STATES<br> SECURITIES AND EXCHANGE COMMISSION<br> Washington, D.C. 20549**

**SCHEDULE 14A**

Proxy Statement Pursuant to Section 14(a) of the Securities<br> Exchange Act of 1934 (Amendment No.)

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| | |
|:---|:---|
| Filed by the Registrant ☒ | Filed by the Registrant ☒ |
| Filed by a party other than the Registrant ☐ | Filed by a party other than the Registrant ☐ |
| Check the appropriate box: | Check the appropriate box: |
| ☐ | Preliminary Proxy Statement |
| ☐ | **Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))** |
| ☐ | Definitive Proxy Statement |
| ☒ | Definitive Additional Materials |
| ☐ | Soliciting Material under §240.14a-12 |

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| |
|:---|
| **CORNING INCORPORATED** |
| (Name of Registrant as Specified In Its Charter) |
| (Name of Person(s) Filing Proxy Statement, if other than the Registrant) |

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Payment of Filing Fee (Check all boxes that apply):

☒ No fee required

☐ Fee paid previously with preliminary materials

☐ Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11

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| | |
|:---|:---|
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;![](glw4500541-defa14a1x1x1.jpg)<br> CORNING INCORPORATED<br> ATTN: MELISSA GAMBOL<br> ONE RIVERFRONT PLAZA, HQ E2-10<br> CORNING, NY 14831 | Your **Vote** Counts!<br> **CORNING INCORPORATED<br>** <br> 2026 Annual Meeting<br> Vote by April 29, 2026 11:59 PM ET. For shares held in a<br> Plan, vote by April 27, 2026 11:59 PM ET. |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;![](glw4500541-defa14a1x1x1.jpg)<br> CORNING INCORPORATED<br> ATTN: MELISSA GAMBOL<br> ONE RIVERFRONT PLAZA, HQ E2-10<br> CORNING, NY 14831 |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;![](glw4500541-defa14a1x1x1.jpg)<br> CORNING INCORPORATED<br> ATTN: MELISSA GAMBOL<br> ONE RIVERFRONT PLAZA, HQ E2-10<br> CORNING, NY 14831 | ![](glw4500541-defa14a1x1x2.jpg) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;V86369-P41946-Z91709 |  |

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You invested in CORNING INCORPORATED and it's time to vote!

You have the right to vote on proposals being presented at the Annual Meeting. **This is an important notice regarding the availability of proxy materials for the shareholder meeting to be held on April 30, 2026.**

Get informed before you vote

View the Notice and Proxy Statement and Annual Report online OR you can receive a free paper or email copy of the material(s) by requesting prior to April 16, 2026. If you would like to request a copy of the material(s) for this and/or future shareholder meetings, you may (1) visit www.ProxyVote.com, (2) call 1-800-579-1639 or (3) send an email to sendmaterial@proxyvote.com. If sending an email, please include your control number (indicated below) in the subject line. Unless requested, you will not otherwise receive a paper or email copy.

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| | | |
|:---|:---|:---|
| ![](glw4500541-defa14a1x1x3.jpg) | For complete information and to vote, visit **www.ProxyVote.com** | For complete information and to vote, visit **www.ProxyVote.com** |
| ![](glw4500541-defa14a1x1x3.jpg) | Control # | ![](glw4500541-defa14a1x1x4.jpg) |

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| | | |
|:---|:---|:---|
| **Smartphone users**<br>Point your camera here and<br> vote without entering a<br> control number<br> ![](glw4500541-defa14a1x1x5.jpg)  | ![](glw4500541-defa14a1x1x6.jpg) | &nbsp;&nbsp;&nbsp;&nbsp;**Vote Virtually at the Meeting** **\***<br>April 30, 2026<br> 12:00 p.m. Eastern Time |
| **Smartphone users**<br>Point your camera here and<br> vote without entering a<br> control number<br> ![](glw4500541-defa14a1x1x5.jpg)  | &nbsp;&nbsp;&nbsp;&nbsp;Virtually at:<br> www.virtualshareholdermeeting.com/GLW2026 | &nbsp;&nbsp;&nbsp;&nbsp;Virtually at:<br> www.virtualshareholdermeeting.com/GLW2026 |

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\*Please check the meeting materials for any special requirements for meeting attendance.

**Vote at www.ProxyVote.com**

**THIS IS NOT A VOTABLE BALLOT**

This is an overview of the proposals being presented at the<br>upcoming shareholder meeting. Please follow the instructions on<br>the reverse side to vote these important matters. <br>

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| | | |
|:---|:---|:---|
|  |  | **Board** |
| **Voting Items** | **Voting Items** | **Recommends** |
| 1. | Election of 10 Directors |  |
|  | **Nominees:** |  |
| 1a. | Ami Badani | **For** |
| 1b. | Leslie A. Brun | **For** |
| 1c. | Stephanie A. Burns | **For** |
| 1d. | Pamela J. Craig | **For** |
| 1e. | Robert F. Cummings, Jr. | **For** |
| 1f. | Roger W. Ferguson, Jr. | **For** |
| 1g. | Thomas D. French | **For** |
| 1h. | Daniel P. Huttenlocher | **For** |
| 1i. | Kevin J. Martin | **For** |
| 1j. | Wendell P. Weeks | **For** |
| 2. | Advisory approval of our executive compensation (Say on Pay) | **For** |
| 3. | Ratification of PricewaterhouseCoopers LLP as independent registered public accounting firm | **For** |
| 4. | Request to adopt an independent chair policy | **Against** |

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&nbsp;&nbsp;&nbsp;&nbsp;Prefer to receive an email instead? While voting on www.ProxyVote.com, be sure to click "Delivery Settings".

V86370-P41946-Z91709