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Insider Trading Intelligence
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Mary Beth Mandanas

NRGV
DIRECTOR · ENERGY VAULT HOLDINGS, INC. · CIK 0001857599
FILING MIX · LIFETIME100%/0%
BUYS
7
SELLS
0
TOTAL VALUE
$38.8K
COMPANIES
1
ACTIVE SINCE
Dec 2022
HOLDINGS NOW
372,864
AVG SELL PX
TRADE KIND
SHOWING 7 / 7
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
2 backtested trades · 8 horizons · 5 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Mary Beth Mandanas, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d2+50.00%+12.21%+0.23%+11.97%+11.97%
14d2+50.00%+21.91%+1.49%+20.42%+20.42%
30d2+100.00%+42.86%+4.00%+38.87%+38.87%
60d2+100.00%+53.20%+3.62%+71.26%+71.26%
90d2+100.00%+70.48%+8.94%+61.54%+61.54%
180d2(1 pending)+100.00%+55.66%+2.97%+52.69%+52.69%
1y2(2 pending)
2y2(2 pending)
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
NRGV · 372,864 shares · as of May 29, 2026
093,216186,432279,648372,8642023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 7 buys / 0 sellsCOVERAGE · 15 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
NRGV
ENERGY VAULT HOLDINGS, INC.
PURCHASEGRANT
Stock grant
22,026372,864May 29, 2026Jun 1, 2026View →
NRGV
ENERGY VAULT HOLDINGS, INC.
PURCHASE
5,000$3.65$18.3K350,838Mar 25, 2026Mar 26, 2026View →
NRGV
ENERGY VAULT HOLDINGS, INC.
PURCHASEGRANT
Stock grant
161,132345,838Sep 16, 2025Sep 18, 2025View →
NRGV
ENERGY VAULT HOLDINGS, INC.
PURCHASE
10,000$2.05$20.5K184,706Sep 11, 2025Sep 12, 2025View →
NRGV
ENERGY VAULT HOLDINGS, INC.
PURCHASEGRANT
Stock grant
79,337174,706May 24, 2024May 29, 2024View →
NRGV
ENERGY VAULT HOLDINGS, INC.
PURCHASEGRANT
Stock grant
48,85395,369May 25, 2023May 30, 2023View →
NRGV
ENERGY VAULT HOLDINGS, INC.
PURCHASEGRANT
Stock grant
46,51646,516Dec 16, 2022Feb 10, 2023View →
Other insiders · NRGV
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About this filer
CIK 0001857599
ROLE
Director
PRIMARY
NRGV
COMPANIES
1
ACTIVE SINCE
Dec 2022
MARKETPEEL · /INSIDER/0001857599DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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