# EDGAR Filing Document

**Accession Number:** 0000050725
**File Stem:** 0000930413-26-000075
**Filing Date:** 2026-1
**Character Count:** 7574
**Document Hash:** 57c5fcac4eb1ca63d1b802d0efef15be
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000930413-26-000075.hdr.sgml**: 20260109

**ACCESSION NUMBER**: 0000930413-26-000075

**CONFORMED SUBMISSION TYPE**: DEFA14A

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20260109

**DATE AS OF CHANGE**: 20260109

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** GRIFFON CORP
- **CENTRAL INDEX KEY:** 0000050725
- **STANDARD INDUSTRIAL CLASSIFICATION:** METAL DOORS, SASH, FRAMES, MOLDING & TRIM [3442]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 111893410
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 0930

**FILING VALUES:**
- **FORM TYPE:** DEFA14A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-06620
- **FILM NUMBER:** 26523056

**BUSINESS ADDRESS:**
- **STREET 1:** 712 FIFTH AVENUE
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10019
- **BUSINESS PHONE:** 2129575000

**MAIL ADDRESS:**
- **STREET 1:** 712 FIFTH AVENUE
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10019

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** INSTRUMENT SYSTEMS CORP /DE/
- **DATE OF NAME CHANGE:** 19920703

**UNITED STATES<br> SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**SCHEDULE 14A**

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

Filed by the Registrant ⌧ Filed by a Party other than the Registrant □

Check the appropriate box:

&nbsp;&nbsp;&nbsp;&nbsp;□ 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 Pursuant to §240.14a-12

**GRIFFON CORPORATION**

**(Name of Registrant as Specified in its Charter)**

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**(Name of Person(s) Filing Proxy Statement, if the other than the Registrant)**

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

&nbsp;&nbsp;&nbsp;&nbsp;⌧ 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

**Important Notice Regarding the Availability of Proxy Materials for the Stockholder Meeting of**

**GRIFFON CORPORATION**

**To be held on:**

**February 18, 2026**

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**This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. We encourage you to access and review all of the important information contained in the proxy materials before voting.**

**The proxy statement and annual report to security holders are available at: www.astproxyportal.com/ast/03170.**

**If you want to receive a paper or e-mail copy of the proxy materials you must request one. There is no charge to you for requesting a copy. To facilitate timely delivery please make the request as instructed below before February 4, 2026.**

**Please visit www.astproxyportal.com/ast/03170, where the following materials are available for view:**

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| | | | |
|:---|:---|:---|:---|
|  |  | **•** | Notice of Annual Meeting of Stockholders |
|  |  | **•** | Proxy Statement |
|  |  | **•** | Form of Electronic Proxy Card |
|  |  | **•** | Annual Report on Form 10-K |
| **TO REQUEST MATERIAL:** | **TO REQUEST MATERIAL:** | **TELEPHONE: 1-888-Proxy-NA (1-888-776-9962) or +1-201-299-6210 (worldwide)<br> E-MAIL: help@equiniti.com** | **TELEPHONE: 1-888-Proxy-NA (1-888-776-9962) or +1-201-299-6210 (worldwide)<br> E-MAIL: help@equiniti.com** |
|  |  | **WEBSITE: us.astfinancial.com/OnlineProxyVoting/ProxyVoting/RequestMaterials** | **WEBSITE: us.astfinancial.com/OnlineProxyVoting/ProxyVoting/RequestMaterials** |
| **TO VOTE:** | ![](x1_c114860x5x1.jpg) | **ONLINE:** To access your online proxy card, please visit **<u>www.voteproxy.com</u>** and follow the on-screen instructions or scan the QR code with your smartphone. You may enter your voting instructions at www.voteproxy.com up until 11:59 p.m. Eastern Time the day before the cut-off or meeting date. | **ONLINE:** To access your online proxy card, please visit **<u>www.voteproxy.com</u>** and follow the on-screen instructions or scan the QR code with your smartphone. You may enter your voting instructions at www.voteproxy.com up until 11:59 p.m. Eastern Time the day before the cut-off or meeting date. |
|  | ![](x1_c114860x5x1.jpg) |  |  |
|  |  | **IN PERSON:** You may vote your shares in person by attending the Annual Meeting. The Annual Meeting will be held at the offices of Dechert LLP, 1095 Avenue of Americas, New York, NY 10036, on Wednesday, February 18, 2026, at 10:00 a.m. Eastern Time. You may obtain directions to the meeting by accessing the following website: www.dechert.com/new_york/. | **IN PERSON:** You may vote your shares in person by attending the Annual Meeting. The Annual Meeting will be held at the offices of Dechert LLP, 1095 Avenue of Americas, New York, NY 10036, on Wednesday, February 18, 2026, at 10:00 a.m. Eastern Time. You may obtain directions to the meeting by accessing the following website: www.dechert.com/new_york/. |
|  |  | **TELEPHONE:** To vote by telephone, please visit **<u>www.voteproxy.com</u>** to view the materials and to obtain the toll free number to call. | **TELEPHONE:** To vote by telephone, please visit **<u>www.voteproxy.com</u>** to view the materials and to obtain the toll free number to call. |
|  |  | **MAIL:** You may request a card by following the instructions above. | **MAIL:** You may request a card by following the instructions above. |

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| | | | |
|:---|:---|:---|:---|
| **The Board of Directors recommends you vote FOR all of the nominees.** | **The Board of Directors recommends you vote FOR all of the nominees.** | **The Board of Directors recommends you vote FOR proposals 2 and 3.** | **The Board of Directors recommends you vote FOR proposals 2 and 3.** |
| 1. Election of the following nominees: | 1. Election of the following nominees: | 2. | Approval of the resolution approving the compensation of our executive officers as disclosed in the Proxy Statement. |
| **NOMINEES:** | Henry A. Alpert<br> Jerome L. Coben<br> H. C. Charles Diao<br> Louis J. Grabowsky<br> Lacy M. Johnson<br> Ronald J. Kramer<br> James W. Sight<br> Samanta Hegedus Stewart<br> Kevin F. Sullivan<br> Michelle L. Taylor<br> Cheryl L. Turnbull | 3. | Ratification of the selection by our audit committee of Grant Thornton LLP to serve as our independent registered public accounting firm for fiscal year 2026. |
|  | Henry A. Alpert<br> Jerome L. Coben<br> H. C. Charles Diao<br> Louis J. Grabowsky<br> Lacy M. Johnson<br> Ronald J. Kramer<br> James W. Sight<br> Samanta Hegedus Stewart<br> Kevin F. Sullivan<br> Michelle L. Taylor<br> Cheryl L. Turnbull | 4. | Upon such other business as may properly come before the meeting or any adjournment thereof. |
|  | Henry A. Alpert<br> Jerome L. Coben<br> H. C. Charles Diao<br> Louis J. Grabowsky<br> Lacy M. Johnson<br> Ronald J. Kramer<br> James W. Sight<br> Samanta Hegedus Stewart<br> Kevin F. Sullivan<br> Michelle L. Taylor<br> Cheryl L. Turnbull |  |  |
|  | Henry A. Alpert<br> Jerome L. Coben<br> H. C. Charles Diao<br> Louis J. Grabowsky<br> Lacy M. Johnson<br> Ronald J. Kramer<br> James W. Sight<br> Samanta Hegedus Stewart<br> Kevin F. Sullivan<br> Michelle L. Taylor<br> Cheryl L. Turnbull |  |  |
| **Please note that you cannot use this notice to vote by mail.** | **Please note that you cannot use this notice to vote by mail.** |  |  |

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