TapewireFind a company

person · Reporting owner

ZENTMAN SAMUEL M

Disclosed activity across 2 companies

Tapewire entity
62255
SEC CIK
0001309349

Export transaction history ↓

Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
ACORN ENERGY, INC.ACFN · Entity 7222DirectorFebruary 05, 2026February 09, 2026
Greenland Mines LtdKLTO · Entity 7810DirectorMarch 04, 2026March 06, 2026

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

ACORN ENERGY, INC.

Report date February 05, 2026 · Filed February 09, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
common stockSEC Table I · non-derivativeDirect7,242 Reported balance After 2026-02-05 transaction · row 1
1 source row

Row 1 · 2026-02-05 · Exercise / conversion · Acquired 625 · Balance 7,242

stock optionsSEC Table II · derivative / convertible security · Conversion / exercise price $4.96 · Expires 2026-02-05Direct0 Reported balance After 2026-02-05 transaction · row 2 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 2 · 2026-02-05 · Exercise / conversion · Disposed 625 · Balance 0

F1: 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.

F2: 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.

Filing footnotes · ownership attribution and instrument terms

F1: 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.

F2: 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.

Greenland Mines Ltd

Report date March 04, 2026 · Filed March 06, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect1,086,440 Reported balance After 2026-03-04 transaction · row 1
1 source row

Row 1 · 2026-03-04 · Grant · Acquired 350,000 · Balance 1,086,440

F1: The Reporting person received the shares as a grant under the company's Equity Incentive Plan.

Filing footnotes · ownership attribution and instrument terms

F1: The Reporting person received the shares as a grant under the company's Equity Incentive Plan.

Transaction history

JSON API
Reset

Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
March 04, 2026 Filed Mar 6, 2026 15:58 UTC Greenland Mines Ltd KLTO · Entity 7810 GrantCommon Stock 350,000 Not disclosed Not disclosed
Disclosure

SEC source: 0001213900-26-024613 · marketforms-72438.xml · nonDerivative · entry 1

ZENTMAN SAMUEL M · CIK 0001309349 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,086,440

F1 · price: The Reporting person received the shares as a grant under the company's Equity Incentive Plan.

Read SEC document
February 05, 2026 Filed Feb 9, 2026 15:43 UTC ACORN ENERGY, INC. ACFN · Entity 7222 Exercise / conversionstock options · Derivative 625 $0.00 Strike: $4.96 $0.00
Disclosure

SEC source: 0001493152-26-005729 · ownership.xml · derivative · entry 2

ZENTMAN SAMUEL M · CIK 0001309349 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: common stock · 625 shares

Expires 2026-02-05

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · security: 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.

F2 · derivative.exercise_date: 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.

Read SEC document
February 05, 2026 Filed Feb 9, 2026 15:43 UTC ACORN ENERGY, INC. ACFN · Entity 7222 Exercise / conversioncommon stock 625 $4.96 $3,100.00
Disclosure

SEC source: 0001493152-26-005729 · ownership.xml · nonDerivative · entry 1

ZENTMAN SAMUEL M · CIK 0001309349 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,242

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
January 19, 2026 Filed Jan 21, 2026 22:11 UTC ACORN ENERGY, INC. ACFN · Entity 7222 Grantstock options · Derivative 3,125 $0.00 Strike: $19.02 $0.00
Disclosure

SEC source: 0001493152-26-003128 · ownership.xml · derivative · entry 1

ZENTMAN SAMUEL M · CIK 0001309349 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,125

Underlying: common stock · 3,125 shares

Expires not disclosed

F1 · security: Granted pursuant to the issuer's compensation policy for non-employee Directors.

F2 · derivative.exercise_date: 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 · derivative.expiration_date: 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.

Read SEC document
December 10, 2025 Filed Dec 10, 2025 13:46 UTC Greenland Mines Ltd KLTO · Entity 7810 GrantNon-Qualified Stock Option · Derivative 20,000 $0.41 Strike: $0.41 $8,200.00
Disclosure

SEC source: 0001213900-25-119998 · marketforms-71509.xml · derivative · entry 1

ZENTMAN SAMUEL M · CIK 0001309349 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 60,000

Underlying: Common Stock · 20,000 shares

Expires 2035-01-16

F1 · derivative.exercise_date: Options are fully vested and can be exercised at any time.

Read SEC document
August 07, 2025 Filed Aug 8, 2025 06:00 UTC Greenland Mines Ltd KLTO · Entity 7810 GrantNon-Qualified Stock Option · Derivative 10,000 $0.41 Strike: $0.41 $4,100.00
Disclosure

SEC source: 0001213900-25-073271 · marketforms-70262.xml · derivative · entry 2

ZENTMAN SAMUEL M · CIK 0001309349 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,000

Underlying: Common Stock · 10,000 shares

Expires 2035-01-16

F3 · derivative.exercise_date: Options are fully vested and can be exercised at any time.

Read SEC document
August 05, 2025 Filed Aug 8, 2025 06:00 UTC Greenland Mines Ltd KLTO · Entity 7810 GrantCommon Stock 153,494 Not disclosed Not disclosed
Disclosure

SEC source: 0001213900-25-073271 · marketforms-70262.xml · nonDerivative · entry 1

ZENTMAN SAMUEL M · CIK 0001309349 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 736,440

F1 · price: The Reporting Person received the shares as contingent merger consideration.

F2 · ownership.direct: The Reporting Person is the beneficial owner of the shares which are owned by The Samuel Zentman 2012 Irrevocable Trust.

Read SEC document
January 01, 2025 Filed Jan 3, 2025 18:03 UTC ACORN ENERGY, INC. ACFN · Entity 7222 Grantstock options · Derivative 625 $0.00 Strike: $17.89 $0.00
Disclosure

SEC source: 0001749759-25-000005 · primary_doc.xml · derivative · entry 1

ZENTMAN SAMUEL M · CIK 0001309349 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 625

Underlying: common stock · 625 shares

Expires not disclosed

F1 · security: Granted 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.

F2 · derivative.exercise_date: One-fourth of the options are immediately exercisable; an additional one-fourth become exercisable on each of 4/1/25, 7/1/25 and 10/1/25.

F3 · derivative.expiration_date: Options expire upon the earlier of (a) 1/1/32 or (b) 18 months from the date the reporting person ceases to be a director, officer, employee or consultant.

Read SEC document
November 22, 2024 Filed Nov 26, 2024 00:12 UTC ACORN ENERGY, INC. ACFN · Entity 7222 Exercise / conversionstock options · Derivative 625 $0.00 Strike: $3.68 $0.00
Disclosure

SEC source: 0001749759-24-000003 · primary_doc.xml · derivative · entry 2

ZENTMAN SAMUEL M · CIK 0001309349 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: common stock · 625 shares

Expires 2025-01-01

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_date: One-fourth of the options became exercisable on each of 1/1/18, 4/1/18, 7/1/18 and 10/1/18.

Read SEC document
November 22, 2024 Filed Nov 26, 2024 00:12 UTC ACORN ENERGY, INC. ACFN · Entity 7222 Exercise / conversioncommon stock 625 $3.68 $2,300.00
Disclosure

SEC source: 0001749759-24-000003 · primary_doc.xml · nonDerivative · entry 1

ZENTMAN SAMUEL M · CIK 0001309349 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,617

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
January 01, 2024 Filed Jan 4, 2024 01:12 UTC ACORN ENERGY, INC. ACFN · Entity 7222 Grantstock options · Derivative 625 $0.00 Strike: $6.09 $0.00
Disclosure

SEC source: 0000880984-24-000003 · primary_doc.xml · derivative · entry 1

ZENTMAN SAMUEL M · CIK 0001309349 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 625

Underlying: common stock · 625 shares

Expires not disclosed

F1 · security: Granted 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.

F2 · derivative.exercise_date: One-fourth of the options are immediately exercisable; an additional one-fourth become exercisable on each of 4/1/24, 7/1/24 and 10/1/24.

F3 · derivative.expiration_date: Options expire upon the earlier of (a) 1/1/31 or (b) 18 months from the date the reporting person ceases to be a director, officer, employee or consultant.

Read SEC document
January 01, 2024 Filed Feb 1, 2024 02:18 UTC ACORN ENERGY, INC. ACFN · Entity 7222 Exercise / conversionstock options · Derivative 625 $0.00 Strike: $2.88 $0.00
Disclosure

SEC source: 0001749759-24-000001 · primary_doc.xml · derivative · entry 3

ZENTMAN SAMUEL M · CIK 0001309349 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: common stock · 625 shares

Expires 2024-01-01

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: The stock options were automatically exercised on a net share settlement basis immediately before their expiration, in accordance with their terms. The issuer delivered to the reporting person the number of shares underlying the stock options less the number of shares having a Fair Market Value on the date of such exercise equal to the aggregate exercise price for the stock options.

F2 · derivative.exercise_date: One-fourth of the options became exercisable on each of 1/1/17, 4/1/17, 7/1/17 and 10/1/17.

Read SEC document
January 01, 2024 Filed Feb 1, 2024 02:18 UTC ACORN ENERGY, INC. ACFN · Entity 7222 Tax withholdingcommon stock 296 $6.09 $1,802.64
Disclosure

SEC source: 0001749759-24-000001 · primary_doc.xml · nonDerivative · entry 2

ZENTMAN SAMUEL M · CIK 0001309349 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 90,944

Read SEC document
January 01, 2024 Filed Feb 1, 2024 02:18 UTC ACORN ENERGY, INC. ACFN · Entity 7222 Exercise / conversioncommon stock 625 $2.88 $1,800.00
Disclosure

SEC source: 0001749759-24-000001 · primary_doc.xml · nonDerivative · entry 1

ZENTMAN SAMUEL M · CIK 0001309349 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 91,240

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: The stock options were automatically exercised on a net share settlement basis immediately before their expiration, in accordance with their terms. The issuer delivered to the reporting person the number of shares underlying the stock options less the number of shares having a Fair Market Value on the date of such exercise equal to the aggregate exercise price for the stock options.

Read SEC document
January 03, 2023 Filed Jan 5, 2023 16:56 UTC ACORN ENERGY, INC. ACFN · Entity 7222 Grantstock options · Derivative 10,000 $0.00 Strike: $0.35 $0.00
Disclosure

SEC source: 0000880984-23-000002 · primary_doc.xml · derivative · entry 1

ZENTMAN SAMUEL M · CIK 0001309349 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,000

Underlying: common stock · 10,000 shares

Expires not disclosed

F1 · security: Granted 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.

F2 · derivative.exercise_date: One-fourth of the options are immediately exercisable; an additional one-fourth become exercisable on each of 4/1/23, 7/1/23 and 10/1/23.

F3 · derivative.expiration_date: Options expire upon the earlier of (a) 1/1/30 or (b) 18 months from the date the reporting person ceases to be a director, officer, employee or consultant.

Read SEC document
November 22, 2022 Filed Nov 23, 2022 01:57 UTC ACORN ENERGY, INC. ACFN · Entity 7222 Exercise / conversionstock options · Derivative 10,000 $0.00 Strike: $0.14 $0.00
Disclosure

SEC source: 0000880984-22-000016 · primary_doc.xml · derivative · entry 2

ZENTMAN SAMUEL M · CIK 0001309349 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: common stock · 10,000 shares

Expires 2023-01-01

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_date: 5,000 options were immediately exercisable as of the grant date of 4/1/16; an additional 2,500 options became exercisable on each of 7/1/16 and 10/1/16.

Read SEC document
November 22, 2022 Filed Nov 23, 2022 01:57 UTC ACORN ENERGY, INC. ACFN · Entity 7222 Exercise / conversioncommon stock 10,000 $0.14 $1,400.00
Disclosure

SEC source: 0000880984-22-000016 · primary_doc.xml · nonDerivative · entry 1

ZENTMAN SAMUEL M · CIK 0001309349 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 90,615

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
January 01, 2022 Filed Jan 3, 2022 17:49 UTC ACORN ENERGY, INC. ACFN · Entity 7222 Grantstock options · Derivative 10,000 $0.00 Strike: $0.63 $0.00
Disclosure

SEC source: 0000880984-22-000001 · primary_doc.xml · derivative · entry 1

ZENTMAN SAMUEL M · CIK 0001309349 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,000

Underlying: common stock · 10,000 shares

Expires not disclosed

F1 · security: Granted 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.

F2 · derivative.exercise_date: One-fourth of the options are immediately exercisable; an additional one-fourth become exercisable on each of 4/1/22, 7/1/22 and 10/1/22.

F3 · derivative.expiration_date: Options expire upon the earlier of (a) 1/1/29 or (b) 18 months from the date the reporting person ceases to be a director, officer, employee or consultant.

Read SEC document
January 01, 2021 Filed Jan 5, 2021 21:17 UTC ACORN ENERGY, INC. ACFN · Entity 7222 Grantstock options · Derivative 10,000 $0.00 Strike: $0.37 $0.00
Disclosure

SEC source: 0000880984-21-000001 · primary_doc.xml · derivative · entry 1

ZENTMAN SAMUEL M · CIK 0001309349 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,000

Underlying: common stock · 10,000 shares

Expires not disclosed

F1 · security: Granted 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.

F2 · derivative.exercise_date: One-fourth of the options are immediately exercisable; an additional one-fourth become exercisable on each of 4/1/21, 7/1/21 and 10/1/21.

F3 · derivative.expiration_date: Options expire upon the earlier of (a) 1/1/28 or (b) 18 months from the date the reporting person ceases to be a director, officer, employee or consultant.

Read SEC document
January 08, 2020 Filed Jan 8, 2020 21:20 UTC ACORN ENERGY, INC. ACFN · Entity 7222 Grantstock options · Derivative 10,000 $0.00 Strike: $0.38 $0.00
Disclosure

SEC source: 0000880984-20-000003 · primary_doc.xml · derivative · entry 1

ZENTMAN SAMUEL M · CIK 0001309349 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,000

Underlying: common stock · 10,000 shares

Expires not disclosed

F1 · security: Granted 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.

F2 · derivative.exercise_date: One-fourth of the options are immediately exercisable; an additional one-fourth become exercisable on each of 4/1/20, 7/1/20 and 10/1/20.

F3 · derivative.expiration_date: Options expire upon the earlier of (a) 1/8/27 or (b) 18 months from the date the reporting person ceases to be a director, officer, employee or consultant.

Read SEC document
June 24, 2019 Filed Jun 26, 2019 19:43 UTC ACORN ENERGY, INC. ACFN · Entity 7222 Othersubscription rights (right to buy) · Derivative 61,445 $0.00 Strike: $0.24 $0.00
Disclosure

SEC source: 0000880984-19-000008 · primary_doc.xml · derivative · entry 2

ZENTMAN SAMUEL M · CIK 0001309349 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: common stock · 19,170 shares

Expires 2019-06-24

F1 · derivative.exercise_price: Represents exercise price per whole share of common stock.

F2 · derivative.underlying_shares: Each subscription right was exercisable for 0.312 shares of common stock at a subscription price of $0.24 per whole share.

Read SEC document
June 24, 2019 Filed Jun 26, 2019 19:43 UTC ACORN ENERGY, INC. ACFN · Entity 7222 Othercommon stock 19,170 $0.24 $4,600.80
Disclosure

SEC source: 0000880984-19-000008 · primary_doc.xml · nonDerivative · entry 1

ZENTMAN SAMUEL M · CIK 0001309349 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 80,615

Read SEC document
February 05, 2019 Filed Feb 7, 2019 00:23 UTC ACORN ENERGY, INC. ACFN · Entity 7222 Grantstock options · Derivative 10,000 $0.00 Strike: $0.31 $0.00
Disclosure

SEC source: 0000880984-19-000003 · primary_doc.xml · derivative · entry 1

ZENTMAN SAMUEL M · CIK 0001309349 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,000

Underlying: common stock · 10,000 shares

Expires not disclosed

F1 · security: Granted 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.

F2 · derivative.exercise_date: One-fourth of the options are immediately exercisable; an additional one-fourth become exercisable on each of 4/1/19, 7/1/19 and 10/1/19.

F3 · derivative.expiration_date: Options expire upon the earlier of (a) 2/5/26 or (b) 18 months from the date the reporting person ceases to be a director, officer, employee or consultant.

Read SEC document
January 01, 2018 Filed Jan 3, 2018 22:20 UTC ACORN ENERGY, INC. ACFN · Entity 7222 Grantstock options · Derivative 10,000 $0.00 Strike: $0.23 $0.00
Disclosure

SEC source: 0000880984-18-000002 · primary_doc.xml · derivative · entry 1

ZENTMAN SAMUEL M · CIK 0001309349 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,000

Underlying: common stock · 10,000 shares

Expires not disclosed

F1 · security: Granted pursuant to the issuer's 2006 Stock Incentive Plan in connection with the reporting person's service on the Board of Directors.

F2 · derivative.exercise_date: One-fourth of the options are immediately exercisable; an additional one-fourth become exercisable on each of 4/1/18, 7/1/18 and 10/1/18.

F3 · derivative.expiration_date: Options expire upon the earlier of (a) 1/1/25 or (b) 18 months from the date the reporting person ceases to be a director, officer, employee or consultant.

Read SEC document
January 01, 2017 Filed Jan 4, 2017 20:47 UTC ACORN ENERGY, INC. ACFN · Entity 7222 Grantstock options · Derivative 10,000 $0.00 Strike: $0.18 $0.00
Disclosure

SEC source: 0000880984-17-000002 · primary_doc.xml · derivative · entry 1

ZENTMAN SAMUEL M · CIK 0001309349 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,000

Underlying: common stock · 10,000 shares

Expires not disclosed

F1 · security: Granted pursuant to the issuer's 2006 Stock Incentive Plan in connection with the reporting person's service on the Board of Directors.

F2 · derivative.exercise_date: One-fourth of the options are immediately exercisable; an additional one-fourth become exercisable on each of 4/1/17, 7/1/17 and 10/1/17.

F3 · derivative.expiration_date: Options expire upon the earlier of (a) 1/1/24 or (b) 18 months from the date the reporting person ceases to be a director, officer, employee or consultant.

Read SEC document

Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.