[Form 4] ULTRALIFE CORP Insider Trading Activity

Rhea-AI Filing Summary

Ultralife Corp (ULBI) director and 10% owner Bradford T. Whitmore reported an open-market purchase of 53,900 shares of common stock on 11/19/2025 at a weighted average price of $4.9706 per share through Whitmore Holdings, LLC.

After this transaction, he beneficially owned 1,182,631 shares indirectly through Whitmore Holdings, 205,915 shares directly, 4,452,283 shares indirectly through Sunray I, LLC, and 518,616 shares indirectly through Grace Brothers, LP. The price range for the individual trades that made up the purchase was from $4.9425 to $5.05 per share.

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)
11/19/2025

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	11/19/2025		P		53,900	A	$4.9706(1)	1,182,631	I(2)	By Whitmore Holdings, LLC
Common Stock								205,915	D
Common Stock								4,452,283	I(3)	By Sunray I, LLC
Common Stock								518,616	I(4)	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 $4.9425 to $5.05. 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. As manager of Sunray I, LLC, Bradford T. Whitmore is the indirect beneficial owner of 4,452,283 shares of Common Stock.

4. 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	11/19/2025
	** 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.

FAQ

What insider transaction did ULBI report for Bradford T. Whitmore?

Bradford T. Whitmore reported buying 53,900 shares of Ultralife Corp common stock on 11/19/2025 at a weighted average price of $4.9706 per share.

Over what price range were the new ULBI shares purchased?

The 53,900 shares of Ultralife common stock were bought in multiple trades at prices ranging from $4.9425 to $5.05 per share.

What is Bradford T. Whitmore’s relationship to Ultralife Corp (ULBI)?

Bradford T. Whitmore is a director and a 10% owner of Ultralife Corp, making him a significant insider of the company.

How many ULBI shares does Whitmore hold indirectly through Whitmore Holdings, LLC?

After the reported transaction, Whitmore beneficially owned 1,182,631 shares of Ultralife common stock indirectly through Whitmore Holdings, LLC.

What other entities hold ULBI shares for Bradford T. Whitmore?

In addition to Whitmore Holdings, LLC, he indirectly owns 4,452,283 shares through Sunray I, LLC and 518,616 shares through Grace Brothers, LP, and directly owns 205,915 shares.

How is the weighted average price for the ULBI insider purchase calculated?

The weighted average price of $4.9706 reflects the combined cost of multiple trades between $4.9425 and $5.05 per share that together total 53,900 shares.