Michael Osterer - 05 Feb 2026 Form 4 Insider Report for ACORN ENERGY, INC. (ACFN)

Role: Director
Signature: /s/ Michael Osterer
Issuer symbol: ACFN
Transactions as of: 05 Feb 2026
Net transactions value: +$3,100
Form type: 4
Filing time: 09 Feb 2026, 10:42:37 UTC
Previous filing: 21 Jan 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	06 Feb 2026	0001749759

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ACFN	common stock	Options Exercise	$3,100	+625	+0.5%	$4.96	126,211	05 Feb 2026	Direct
holding	ACFN	common stock						52,083	05 Feb 2026	by UE Systems Inc.	F1

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	Options Exercise	$0	-625	-100%	$0.000000	0	05 Feb 2026	common stock	625	$4.96	Direct	F2, F3

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

Explanation of Responses:

Id	Content
F1	Mr. Osterer shares voting and dispositive power over such securities.
F2	Granted on 2/5/19 pursuant to the issuer's Amended and Restated 2006 Stock Incentive Plan in connection with the reporting person's service on the Board of Directors.
F3	One-fourth of the options vested and became exercisable on each of 2/5/19, 4/1/19, 7/1/19 and 10/1/19.