Who
Samuel M. Zentman
Director
Company insider
Files Form 4 as: Director, Klotho Neurosciences; Director, Acorn Energy.
In numbers
- Trades disclosed
- 63
- Buys
- 6
- Sells
- 0
- Bought
- $148K
- Sold
- $0
- Companies
- 2
- Companies where not an officer
- 2
- First trade
- 27 Mar 2006
- Last trade
- 4 Mar 2026
- Last filed
- 6 Mar 2026
Companies traded
Activity over time
1 Nov 2024 – 1 Oct 2026
Buys above the line, sells below, each month.
Every trade
| Traded | Company | What | Amount | |
|---|---|---|---|---|
| 4 Mar 2026filed 6 Mar 2026 | Klotho NeurosciencesBiotechnology | SEC FORM 4 Code A | —350,000 | filing |
| 4 Mar 2026filed 6 Mar 2026 | GRML Greenland MinesBiotechnology | SEC FORM 4 Code A | —350,000 | filing |
| 5 Feb 2026filed 9 Feb 2026 | ACFN Acorn EnergyProfessional Services | SEC FORM 4 Code M | $3,100625 at $4.96 | filing |
| 5 Feb 2026filed 9 Feb 2026 | ACFN Acorn Energyoption or derivative · Professional Services | SEC FORM 4 Code M | —625 at $0.00 | filing |
| 5 Feb 2026filed 9 Feb 2026 | ACFN Acorn Energyoption or derivative · Professional Services | SEC FORM 4 Code M | —625 at $0.00 | filing |
| 5 Feb 2026filed 9 Feb 2026 | ACFN Acorn EnergyProfessional Services | SEC FORM 4 Code M | $3,100625 at $4.96 | filing |
| 19 Jan 2026filed 21 Jan 2026 | ACFN Acorn Energyoption or derivative · Professional Services | SEC FORM 4 Code A | —3,125 at $0.00 | filing |
| 19 Jan 2026filed 21 Jan 2026 | ACFN Acorn Energyoption or derivative · Professional Services | SEC FORM 4 Code A | —3,125 at $0.00 | filing |
| 10 Dec 2025filed 10 Dec 2025 | GRML Greenland Minesoption or derivative · Biotechnology | SEC FORM 4 Code A | $8,20020,000 at $0.41 | filing |
| 7 Aug 2025filed 8 Aug 2025 | GRML Greenland Minesoption or derivative · Biotechnology | SEC FORM 4 Code A | $4,10010,000 at $0.41 | filing |
| 5 Aug 2025filed 8 Aug 2025 | GRML Greenland MinesBiotechnology | SEC FORM 4 Code A | —153,494 | filing |
| 1 Jan 2025filed 3 Jan 2025 | ACFN Acorn Energyoption or derivative · Professional Services | SEC FORM 4 Code A | —625 at $0.00 | filing |
| 22 Nov 2024filed 25 Nov 2024 | ACFN Acorn Energyoption or derivative · Professional Services | SEC FORM 4 Code M | —625 at $0.00 | filing |
| 22 Nov 2024filed 25 Nov 2024 | ACFN Acorn EnergyProfessional Services | SEC FORM 4 Code M | $2,300625 at $3.68 | filing |
| 1 Jan 2024filed 31 Jan 2024 | ACFN Acorn Energyoption or derivative · Professional Services | SEC FORM 4 Code M | —625 at $0.00 | filing |
| 1 Jan 2024filed 31 Jan 2024 | ACFN Acorn EnergyProfessional Services | SEC FORM 4 Code M | $1,800625 at $2.88 | filing |
| 1 Jan 2024filed 31 Jan 2024 | ACFN Acorn EnergyProfessional Services | SEC FORM 4 Code F | $1,803296 at $6.09 | filing |
| 1 Jan 2024filed 3 Jan 2024 | ACFN Acorn Energyoption or derivative · Professional Services | SEC FORM 4 Code A | —625 at $0.00 | filing |
| 3 Jan 2023filed 5 Jan 2023 | ACFN Acorn Energyoption or derivative · Professional Services | SEC FORM 4 Code A | —10,000 at $0.00 | filing |
| 22 Nov 2022filed 22 Nov 2022 | ACFN Acorn Energyoption or derivative · Professional Services | SEC FORM 4 Code M | —10,000 at $0.00 | filing |
News
Acorn Energy (NASDAQ:ACFN) and AEye (NASDAQ:LIDR) Financial ContrastACFN · tickerreport.com · 19 Oct 2026
0 headlines in the last 90 days name Samuel M. Zentman; 1 article from the last 14 days about the 1 company they traded most, at most three about any one of them.