Mary Beth Mandanas

Companies

• Energy VaultBoard member Feb 15, 2022 to now¹
• TortoiseEcofin Acquisition Corp. IIIBoard member Jul 19, 2021 to Jul 18, 2023²

Holdings

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

Shares held

• Energy Vault NRGV372,864 shares³$1.0M at $2.79May 29, 2026

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

Recent filings

• May 29, 2026Granted 22,026 shares of Energy Vault³
• Mar 25, 2026Bought 5,000 shares at $3.65 of Energy Vault⁴
• Sep 16, 2025Granted 161,132 shares of Energy Vault⁵
• Sep 11, 2025Bought 10,000 shares at $2.05 of Energy Vault⁶
• May 24, 2024Granted 79,337 shares of Energy Vault⁷
• May 25, 2023Granted 48,853 shares of Energy Vault⁸
• Dec 16, 2022Granted 46,516 shares of Energy Vault⁹