[Form 4] Ultralife Corporation Insider Trading Activity

ULTRALIFE CORP director and 10% owner Bradford T. Whitmore reported indirect open-market purchases of the company’s common stock.

Rhea-AI Filing Summary

ULTRALIFE CORP director and 10% owner Bradford T. Whitmore reported indirect open-market purchases of the company’s common stock. Through Whitmore Holdings, LLC, he bought a total of 58,664 shares between August 19 and 21, 2025 at weighted average prices around $6.56–$6.63 per share, bringing Whitmore Holdings’ position to 1,128,731 shares.

The filing also lists other holdings associated with him, including 205,915 shares held directly, 4,452,283 shares held by Sunray I, LLC, and 518,616 shares held by Grace Brothers, LP, where he is described as an indirect beneficial owner.

Insider Trade Summary

Net Buyer: 58,664 shares

Net Buy 6 txns

Insider WHITMORE BRADFORD T

Role Director, 10% Owner

Bought 58,664 shs ($387K)

Type	Security	Shares	Price	Value
Purchase	Common Stock	29,766	$6.6287	$197K
Purchase	Common Stock	13,000	$6.571	$85K
Purchase	Common Stock	15,898	$6.5648	$104K
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 1,128,731 shares (Indirect, By Whitmore Holdings, LLC); Common Stock — 205,915 shares (Direct); Common Stock — 4,452,283 shares (Indirect, By Sunray I, LLC); Common Stock — 518,616 shares (Indirect, By Grace Brothers, LP)

Footnotes (6)

1. F1. The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $6.54 to $6.6393. The reporting person undertakes to provide, upon request by the staff of the SEC, the issuer, or a security holder of the issuer, full information regarding the number of shares transacted at each price, with respect to all transactions reported on this Form 4.
2. F2. As manager of Whitmore Holdings, LLC (and trustee of Bradford Whitmore Trust, the sole member of Whitmore Holdings, LLC), Bradford T. Whitmore is the indirect beneficial owner of these shares.
3. F3. The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $6.515 to $6.6054. The reporting person undertakes to provide, upon request by the staff of the SEC, the issuer, or a security holder of the issuer, full information regarding the number of shares transacted at each price, with respect to all transactions reported on this Form 4.
4. F4. The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $6.52 to $6.7174. The reporting person undertakes to provide, upon request by the staff of the SEC, the issuer, or a security holder of the issuer, full information regarding the number of shares transacted at each price, with respect to all transactions reported on this Form 4.
5. F5. As manager of Sunray I, LLC, Bradford T. Whitmore is an indirect beneficial owner of 4,452,283 shares of Common Stock.
6. F6. As Manager of Whitmore Holdings, LLC, which is the sole General Partner of Grace Brothers, LP, Bradford T. Whitmore is an indirect beneficial owner of 518,616 shares of Common Stock.

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Accepted by SEC EDGAR 08/21/2025 - 04:58 PM 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^*

WHITMORE BRADFORD T

(Last) (First) (Middle)

5215 OLD ORCHARD ROAD

SUITE 970

(Street)

SKOKIE IL 60077

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
ULTRALIFE CORP [ ULBI ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
08/19/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

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	08/19/2025		P		15,898	A	$6.5648(1)	1,085,965	I(2)	By Whitmore Holdings, LLC
Common Stock	08/20/2025		P		13,000	A	$6.571(3)	1,098,965	I(2)	By Whitmore Holdings, LLC
Common Stock	08/21/2025		P		29,766	A	$6.6287(4)	1,128,731	I(2)	By Whitmore Holdings, LLC
Common Stock								205,915	D
Common Stock								4,452,283	I(5)	By Sunray I, LLC
Common Stock								518,616	I(6)	By Grace Brothers, LP

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 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $6.54 to $6.6393. The reporting person undertakes to provide, upon request by the staff of the SEC, the issuer, or a security holder of the issuer, full information regarding the number of shares transacted at each price, with respect to all transactions reported on this Form 4.

2. As manager of Whitmore Holdings, LLC (and trustee of Bradford Whitmore Trust, the sole member of Whitmore Holdings, LLC), Bradford T. Whitmore is the indirect beneficial owner of these shares.

3. The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $6.515 to $6.6054. The reporting person undertakes to provide, upon request by the staff of the SEC, the issuer, or a security holder of the issuer, full information regarding the number of shares transacted at each price, with respect to all transactions reported on this Form 4.

4. The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $6.52 to $6.7174. The reporting person undertakes to provide, upon request by the staff of the SEC, the issuer, or a security holder of the issuer, full information regarding the number of shares transacted at each price, with respect to all transactions reported on this Form 4.

5. As manager of Sunray I, LLC, Bradford T. Whitmore is an indirect beneficial owner of 4,452,283 shares of Common Stock.

6. As Manager of Whitmore Holdings, LLC, which is the sole General Partner of Grace Brothers, LP, Bradford T. Whitmore is an indirect beneficial owner of 518,616 shares of Common Stock.

	Bradford T. Whitmore	08/21/2025
	** 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.