# EDGAR Filing Document

**Accession Number:** 0000875657
**File Stem:** 0001437749-26-019135
**Filing Date:** 2026-6
**Character Count:** 2186
**Document Hash:** f873172c996574e8f996648dd576ded2
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001437749-26-019135.hdr.sgml**: 20260602

**ACCESSION NUMBER**: 0001437749-26-019135

**CONFORMED SUBMISSION TYPE**: DEFA14A

**PUBLIC DOCUMENT COUNT**: 3

**FILED AS OF DATE**: 20260602

**DATE AS OF CHANGE**: 20260602

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** ULTRALIFE CORP
- **CENTRAL INDEX KEY:** 0000875657
- **STANDARD INDUSTRIAL CLASSIFICATION:** MISCELLANEOUS ELECTRICAL MACHINERY, EQUIPMENT & SUPPLIES [3690]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 161387013
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** DEFA14A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 000-20852
- **FILM NUMBER:** 261054661

**BUSINESS ADDRESS:**
- **STREET 1:** 2000 TECHNOLOGY PARKWAY
- **CITY:** NEWARK
- **STATE:** NY
- **ZIP:** 14513
- **BUSINESS PHONE:** 3153327100

**MAIL ADDRESS:**
- **STREET 1:** 2000 TECHNOLOGY PARKWAY
- **CITY:** NEWARK
- **STATE:** NY
- **ZIP:** 14513

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** ULTRALIFE BATTERIES INC
- **DATE OF NAME CHANGE:** 19940224

**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**

**(Amendment No.)**

Filed by the Registrant ☒

Filed by a Party other than the Registrant ☐

Check the appropriate box:

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| | | | |
|:---|:---|:---|:---|
| ☐ | Preliminary Proxy Statement | ☐ | **Confidential, for Use of the Commission Only** |
| ☐ | Definitive Proxy Statement |  | **(as permitted by Rule 14a-6(e)(2))** |
| ☒ | Definitive Additional Materials |  |  |
| ☐ | Soliciting Material Pursuant to §240.14a-12 |  |  |

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**ULTRALIFE CORPORATION**

**(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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