MarketPeel
Insider Trading Intelligence
NR

Natarajan Ramanan

ERII
CHIEF TECHNOLOGY OFFICER · ENERGY RECOVERY, INC. · CIK 0002058874
FILING MIX · LIFETIME60%/40%
BUYS
3
SELLS
2
TOTAL VALUE
$1.01M
COMPANIES
1
ACTIVE SINCE
Mar 2025
HOLDINGS NOW
52,565
AVG SELL PX
$10.25
TRADE KIND
SHOWING 5 / 5
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
1 backtested trades · 8 horizons · 3 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Natarajan Ramanan, 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
7d1+100.00%-4.57%-2.24%-2.33%-2.33%
14d1+100.00%-9.32%-3.16%-6.16%-6.16%
30d1+100.00%-4.94%-3.74%-1.20%-1.20%
60d1+0.00%+2.52%+5.39%-2.87%-2.87%
90d1+100.00%-23.77%
180d1(1 pending)
1y1(1 pending)
2y1(1 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
ERII · 52,565 shares · as of Mar 5, 2026
016,25832,51548,77365,0302026SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2025
2025
2025
2025
2026
FLOW · 3 buys / 2 sellsCOVERAGE · 5 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
ERII
ENERGY RECOVERY, INC.
SALE
Chief Technology Officer
272$10.57$2.9K52,565Mar 5, 2026Mar 6, 2026View →
ERII
ENERGY RECOVERY, INC.
SALE
Chief Technology Officer
2,724$10.22$27.8K52,837Mar 3, 2026Mar 5, 2026View →
ERII
ENERGY RECOVERY, INC.
PURCHASEGRANT
Stock grant
29,10655,561Feb 17, 2026Feb 19, 2026View →
ERII
ENERGY RECOVERY, INC.
PURCHASEGRANT
Stock grant
26,45526,455Mar 3, 2025Mar 12, 2025View →
ERII
ENERGY RECOVERY, INC.
PURCHASEGRANT
Stock grant
65,030$15.12$983.3K65,030Mar 3, 2025Mar 12, 2025View →
Other insiders · ERII
Loading peer insiders…
About this filer
CIK 0002058874
ROLE
Chief Technology Officer
PRIMARY
ERII
COMPANIES
1
ACTIVE SINCE
Mar 2025
MARKETPEEL · /INSIDER/0002058874DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
FREE · DAILY · 6 AM ET

One short email. Insider buys, congressional trades, and plain-English analysis.

Feedback