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NASDAQ: ERII
Energy Recovery Inc Stock Ownership - Who owns Energy Recovery?

OverviewForecastEarningsRevenueDividendOwnership

Insider buying vs selling

Have Energy Recovery Inc insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Pamela L. TondreauDirector2026-05-1320,000$8.34
$166.84kBuy
Arve HanstveitDirector2026-04-062,419$10.29
$24.89kSell
Arve HanstveitDirector2026-04-02165,292$10.14
$1.68MSell
Arve HanstveitDirector2026-03-1025,000$10.96
$273.98kSell
Arve HanstveitDirector2026-03-0611,582$10.62
$122.94kSell
Natarajan RamananChief Technology Officer2026-03-05272$10.57
$2.88kSell
Arve HanstveitDirector2026-03-0538,418$10.71
$411.46kSell
Rodney ClementeSVP Water2026-03-0420,568$10.61
$218.31kSell
Natarajan RamananChief Technology Officer2026-03-032,724$10.22
$27.84kSell
William YeungChief Legal Officer2026-02-06646$15.14
$9.78kSell

1 of 5

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Net Insider Buy/Sell (L12M) Ownership

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ERII Shareholders

What type of owners hold Energy Recovery Inc stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Ole Peter Lorentzen42.65%21,985,907$179.62MInsider
Blackrock Inc11.82%6,090,926$49.76MInstitution
Ameriprise Financial Inc10.20%5,259,816$42.97MInstitution
Amundi7.26%3,740,309$30.56MInstitution
James Medanich6.40%3,300,000$26.96MInsider
Fred Olav Johannessen4.43%2,283,851$18.66MInsider
Vanguard Capital Management LLC4.33%2,230,270$18.22MInstitution
Fil Ltd3.86%1,987,919$16.24MInstitution
Legal General Group PLC3.69%1,902,525$15.54MInstitution
State Street Corp3.44%1,772,948$14.48MInstitution

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ERII vs Pollution & Treatment Control Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
ERII57.67%42.33%Net SellingNet Selling
ADUR2.15%0.00%
ZONE26.82%7.14%Net Buying
ARQ34.18%49.08%Net BuyingNet Buying
FTEK19.86%80.14%Net SellingNet Buying
View Top Pollution & Treatment Control Stocks

Energy Recovery Stock Ownership FAQ

Who owns Energy Recovery?

Energy Recovery (NASDAQ: ERII) is owned by 85.96% institutional shareholders, 63.09% Energy Recovery insiders, and 0.00% retail investors. Ole Peter Lorentzen is the largest individual Energy Recovery shareholder, owning 21.99M shares representing 42.65% of the company. Ole Peter Lorentzen's Energy Recovery shares are currently valued at $175.89M.

If you're new to stock investing, here's how to buy Energy Recovery stock.
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