Michael Osterer - 19 Jan 2026 Form 4 Insider Report for ACORN ENERGY, INC. (ACFN)

Role: Director
Signature: /s/ Michael Osterer
Issuer symbol: ACFN
Transactions as of: 19 Jan 2026
Net transactions value: $0
Form type: 4
Filing time: 21 Jan 2026, 17:11:12 UTC
Previous filing: 06 Aug 2025
Next filing: 09 Feb 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Osterer Michael	Director	C/O ACORN ENERGY, INC., 1000 N WEST ST, SUITE 1200, WILMINGTON	/s/ Michael Osterer	21 Jan 2026	0001749759

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	ACFN	stock options	Award	$0	+3,125		$0.000000	3,125	19 Jan 2026	common stock	3,125	$19.02	Direct	F1, F2, F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Granted pursuant to the issuer's compensation policy for non-employee Directors.
F2	One-fourth of the options are immediately exercisable; an additional one-fourth become exercisable on each of 4/1/26, 7/1/26 and 10/1/26.
F3	Options expire on the earlier of (a) 1/1/33 and (b) 18 months from the date the reporting person ceases to be a director, officer, employee or consultant.