Insider · CIK 0001857599
Mary Beth Mandanas
Files at NRGV (Energy Vault Holdings, Inc.). First filing Sep 12, 2025, latest Mar 26, 2026.
In brief
Mary Beth Mandanas files SEC Form 4 as director at NRGV (Energy Vault Holdings, Inc.). Since Sep 12, 2025, Mary Beth Mandanas has reported 2 open-market buys worth $39k and 0 open-market sells worth $0, the latest filed on Mar 26, 2026.
A track record needs three past buys with six months of prices behind them; Mary Beth Mandanas has 0, so none is measured yet.
The newest scored trade: bought $18k of NRGV on Mar 25, 2026, filed Mar 26, 2026, scored 31 (weak). In the last 12 months: 1 buy worth $18k and 0 sells worth $0.
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
NRGV: Energy Vault Holdings, Inc.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 31Weak | Energy Vault Holdings, Inc. | $18k 5,000 shares | +1% | +484% from low-39% from high | |
| 37Weak | Energy Vault Holdings, Inc. | $21k 10,000 shares | +6% | +222% from low-20% from high |
Transactions
Every row this insider has filed, 4 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| May 29, 2026 | NRGV Energy Vault Holdings, Inc. | AGrant or award Common Stock | +22,026 | $0.00 | $0 | 372,864 | Jun 1, 2026 |
| Mar 25, 2026 | NRGV Energy Vault Holdings, Inc. | POpen-market purchase Common Stock | +5,000 | $3.65 | $18k | 350,838 | Mar 26, 2026 |
| Sep 16, 2025 | NRGV Energy Vault Holdings, Inc. | AGrant or award Common Stock | +161,132 | $0.00 | $0 | 345,838 | Sep 18, 2025 |
| Sep 11, 2025 | NRGV Energy Vault Holdings, Inc. | POpen-market purchase Common Stock | +10,000 | $2.05 | $21k | 184,706 | Sep 12, 2025 |
Questions about Mary Beth Mandanas
Answered from the filings on this page, as of the latest one.
Is Mary Beth Mandanas buying or selling?
In the last 12 months Mary Beth Mandanas reported 1 open-market buy worth $18k and 0 open-market sells worth $0 on SEC Form 4; the latest was bought $18k of NRGV on Mar 25, 2026. Grants, option exercises and tax withholding are not counted.
How did Mary Beth Mandanas's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Mary Beth Mandanas has 0.
Where does Mary Beth Mandanas file Form 4?
Mary Beth Mandanas has filed Form 4 at NRGV (Energy Vault Holdings, Inc.). A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.