# EDGAR Filing Document

**Accession Number:** 0001093691
**File Stem:** 0001104659-26-052860
**Filing Date:** 2026-4
**Character Count:** 4814
**Document Hash:** 5a48a4c5a9dbc2c3a9736ee1513685da
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-26-052860.hdr.sgml**: 20260430

**ACCESSION NUMBER**: 0001104659-26-052860

**CONFORMED SUBMISSION TYPE**: DEFA14A

**PUBLIC DOCUMENT COUNT**: 3

**FILED AS OF DATE**: 20260430

**DATE AS OF CHANGE**: 20260430

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** PLUG POWER INC
- **CENTRAL INDEX KEY:** 0001093691
- **STANDARD INDUSTRIAL CLASSIFICATION:** ELECTRICAL INDUSTRIAL APPARATUS [3620]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 223672377
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** DEFA14A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-34392
- **FILM NUMBER:** 26924887

**BUSINESS ADDRESS:**
- **STREET 1:** 125 VISTA BOULEVARD
- **CITY:** SLINGERLANDS
- **STATE:** NY
- **ZIP:** 12159
- **BUSINESS PHONE:** 5187827700

**MAIL ADDRESS:**
- **STREET 1:** 125 VISTA BOULEVARD
- **CITY:** SLINGERLANDS
- **STATE:** NY
- **ZIP:** 12159

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**Schedule 14A**

**Proxy Statement Pursuant to Section 14(a) of the** 

**Securities Exchange Act of 1934**

Filed by the Registrant ⌧

Filed by a Party other than the Registrant ◻

Check the appropriate box:

◻ Preliminary Proxy Statement

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| ◻ | **Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))** |

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◻ Definitive Proxy Statement

⌧ Definitive Additional Materials

◻ Soliciting Material Pursuant to § 240.14a-12

**PLUG POWER INC.**

**(Name of Registrant as Specified In Its Charter)** 

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

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;![GRAPHIC](tm263044d4_defa14aimg001.jpg) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\*Please check the meeting materials for any special requirements for meeting attendance. Smartphone users Point your camera here and vote without entering a control number For complete information and to vote, visit www.ProxyVote.com Control # V96804-Z92902 PLUG POWER INC. C/O BROADRIDGE P.O. BOX 1342 BRENTWOOD, NY 11717 Your Vote Counts! PLUG POWER INC. 2026 Annual Meeting Vote by June 10, 2026 11:59 PM ET You invested in PLUG POWER INC. 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 stockholder meeting to be held on June 11, 2026. Get informed before you vote View the Notice, Proxy Statement and Annual Report to Stockholders online OR you can receive a free paper or email copy of the material(s) by requesting prior to May 28, 2026. If you would like to request a copy of the material(s) for this and/or future stockholder 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. Vote Virtually at the Meeting\* June 11, 2026 10:00 AM, Eastern Time Virtually at: www.virtualshareholdermeeting.com/PLUG2026 |

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| &nbsp;&nbsp;![GRAPHIC](tm263044d4_defa14aimg002.jpg) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Vote at www.ProxyVote.com Prefer to receive an email instead? While voting on www.ProxyVote.com, be sure to click "Delivery Settings". Voting Items Board Recommends V96805-Z92902 THIS IS NOT A VOTABLE BALLOT This is an overview of the proposals being presented at the upcoming stockholder meeting. Please follow the instructions on the reverse side to vote on these important matters. 1. Election of Class III Directors Nominees: 1a. Colin Angle For 1b. Jose Luis Crespo For 1c. Patrick Joggerst For 1d. Gary K. Willis For 2. The approval of an amendment to the Plug Power Inc. 2021 Stock Option and Incentive Plan to increase the number of shares of the Company's common stock reserved thereunder by 25,000,000 shares, from 91,400,000 shares to 116,400,000 shares. For 3. The approval of the non-binding, advisory vote regarding the compensation of the Company's named executive officers. For 4. The ratification of Deloitte & Touche LLP as the Company's independent registered public accounting firm for 2026. For NOTE: Such other business as may properly come before the meeting or any adjournment or postponement thereof. |

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