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Form SCHEDULE 13D/A ULTRALIFE CORP Filed by: WHITMORE BRADFORD T

March 16, 2026 7:16 PM





If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.

The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).




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SCHEDULE 13D




Comment for Type of Reporting Person:
Bradford T. Whitmore has shared voting power of 1,941,759 shares as the manager of Whitmore Holdings, LLC, the holder of the shares. Bradford T. Whitmore has shared voting power of 4,452,283 shares as the manager of SUNRAY I, LLC, the holder of the shares. Bradford T. Whitmore has shared dispositive power of 1,941,759 shares as the manager of Whitmore Holdings, LLC, the holder of the shares. Bradford T. Whitmore has shared dispositive power of 4,452,283 shares as the manager of SUNRAY I, LLC, the holder of the shares.


SCHEDULE 13D






SCHEDULE 13D




Comment for Type of Reporting Person:
Whitmore Holdings, LLC has shared voting power of 4,452,283 shares as the sole member of SUNRAY I, LLC, the holder of the shares. Whitmore Holdings, LLC has shared dispositive power of 4,452,283 shares as the sole member of SUNRAY I, LLC, the holder of the shares.


SCHEDULE 13D




Comment for Type of Reporting Person:
Bradford Whitmore Trust has shared voting power of 4,452,283 shares as the sole member of Whitmore Holdings, LLC, which is the sole member of SUNRAY I, LLC, the holder of the shares. Bradford Whitmore Trust has shared voting power of 1,941,759 shares as the sole member of Whitmore Holdings, LLC, the holder of the shares. Bradford Whitmore Trust has shared dispositive power of 4,452,283 shares as the sole member of Whitmore Holdings, LLC, which is the sole member of SUNRAY I, LLC, the holder of the shares. Bradford Whitmore Trust has shared dispositive power of 1,941,759 shares as the sole member of Whitmore Holdings, LLC, the holder of the shares.


SCHEDULE 13D


WHITMORE BRADFORD T
Signature:Bradford T. Whitmore
Name/Title:Bradford T. Whitmore
Date:03/16/2026
SUNRAY I, LLC
Signature:Bradford T. Whitmore
Name/Title:Manager
Date:03/16/2026
Signature:Whitmore Holdings, LLC
Name/Title:Manager
Date:03/16/2026
Whitmore Holdings, LLC
Signature:Bradford T. Whitmore
Name/Title:Manager
Date:03/16/2026
Bradford Whitmore Trust
Signature:Bradford T. Whitmore
Name/Title:Trustee
Date:03/16/2026

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