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Director at Acorn Energy (ACFN) awarded 3,125 stock options

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Acorn Energy director Michael Osterer was granted 3,125 stock options on January 19, 2026 under the company’s compensation policy for non-employee directors. The options have an exercise price of $19.02 per share and were reported as directly owned following the grant.

One-fourth of the options are immediately exercisable, with additional one-fourth portions becoming exercisable on April 1, 2026, July 1, 2026 and October 1, 2026. The options expire on the earlier of January 1, 2033 or 18 months after Osterer ceases serving as a director, officer, employee or consultant.

Positive

  • None.

Negative

  • None.
Insider Osterer Michael
Role Director
Type Security Shares Price Value
Grant/Award stock options 3,125 $0.00 --
Holdings After Transaction: stock options — 3,125 shares (Direct)
Footnotes (1)
  1. Granted pursuant to the issuer's compensation policy for non-employee Directors. 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. 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.
Form 4 Insider Transactions: What Each Field Means →
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*
Osterer Michael
(Last) (First) (Middle)
C/O ACORN ENERGY, INC.
1000 N WEST ST, SUITE 1200
(Street)
WILMINGTON DE 19801
(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
ACORN ENERGY, INC. [ ACFN ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
X Director 10% Owner
Officer (give title below) Other (specify below)
3. Date of Earliest Transaction (Month/Day/Year)
01/19/2026
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
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
stock options(1) $19.02 01/19/2026 A 3,125 (2) (3) common stock 3,125 $0 3,125 D
Explanation of Responses:
1. Granted pursuant to the issuer's compensation policy for non-employee Directors.
2. 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.
3. 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.
/s/ Michael Osterer 01/21/2026
** 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.

Source: View Original Filing on SEC EDGAR

FAQ

What insider transaction did Acorn Energy (ACFN) report for Michael Osterer?

Acorn Energy reported that director Michael Osterer received a grant of 3,125 stock options on January 19, 2026, reported as directly owned after the transaction.

What is the exercise price of Michael Osterer’s Acorn Energy (ACFN) stock options?

The granted stock options have an exercise price of $19.02 per share, as disclosed in the derivative securities table.

How do the Acorn Energy (ACFN) options granted to Michael Osterer vest?

According to the footnotes, one-fourth of the options are immediately exercisable, and an additional one-fourth become exercisable on April 1, 2026, July 1, 2026 and October 1, 2026.

When do Michael Osterer’s Acorn Energy (ACFN) stock options expire?

The options expire on the earlier of January 1, 2033 or 18 months from the date he ceases to be a director, officer, employee or consultant of the company.

Is the Acorn Energy (ACFN) Form 4 grant to Michael Osterer part of a compensation plan?

Yes. The footnotes explain that the options were granted pursuant to Acorn Energy’s compensation policy for non-employee directors.

How many Acorn Energy (ACFN) derivative securities does Michael Osterer hold after this transaction?

Following the reported grant, Osterer beneficially owns 3,125 stock options, reported as held in direct ownership.