Samuel M. Zentman

Companies

• Greenland Mines LtdBoard member Aug 8, 2025 to now¹
• Acorn EnergyBoard member Mar 29, 2006 to now²

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• GMGreenland Mines Ltd GRML1,086,440 shares³$6.1M at $5.59Mar 4, 2026
• Acorn Energy ACFN7,242 shares⁴$135.4K at $18.70Feb 5, 2026

As of each latest filing. The line shows shares held over time.

Recent filings

• Mar 4, 2026Granted 350,000 shares of Greenland Mines Ltd³
• Feb 5, 2026Exercised options 625 shares at $4.96 of Acorn Energy⁴
• Aug 5, 2025Granted 153,494 shares of Greenland Mines Ltd⁵
• Nov 22, 2024Exercised options 625 shares at $3.68 of Acorn Energy⁶
• Jan 1, 2024Shares withheld for tax 296 shares at $6.09 of Acorn Energy⁷
• Jan 1, 2024Exercised options 625 shares at $2.88 of Acorn Energy⁷
• Nov 22, 2022Exercised options 10,000 shares at $0.14 of Acorn Energy⁸