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Energy Recovery, Inc.

ERII
Exchange
Nasdaq
Industry
Special Industry Machinery, NEC
SEC CIK
0001421517

In the last 90 days, Energy Recovery, Inc. insiders filed 0 open-market purchases and 2 sales; 199 institutions reported holding it in 13F filings for Q2 2026, worth $395.6M in total; no superinvestor holds it.

Holders of 5% or more of ERII

Holders whose latest Schedule 13D or 13G filing reports 5% or more of Energy Recovery, Inc., largest stake first. The change is against the holder's previous filing.

Holders of 5% or more of ERII
HolderLatest formStakeChangeFirst filedLatest filingFiling
Ameriprise Financial Inc13G/A8.60%4.56M shares−1.30 ppfrom 9.90%Feb 14, 20253 filingsFeb 17, 2026SEC
Amundi13G/A5.38%2.85M shares0.00 ppfrom 5.38%Feb 17, 20262 filingsFeb 24, 2026SEC

Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.

13D and 13G filings

11 Schedule 13D and 13G filings on Energy Recovery, Inc., newest first, including old-format filings without a stake.

Schedule 13D and 13G filings on ERII
Filed (ET)FilerFormStakeChangeEvent dateFiling
Mar 26, 20266:21 PM ETVanguard Group Inc13G/A0.00%0 shares−6.35 ppfrom 6.35%Below 5%Mar 13, 2026SEC
Feb 24, 202610:49 AM ETAmundiand 1 other13G/A5.38%2.85M shares0.00 ppfrom 5.38%Dec 31, 2025SEC
Feb 17, 20264:55 PM ETAmundiand 1 other13G5.38%2.85M sharesNewDec 31, 2025SEC
Feb 17, 202610:37 AM ETAmeriprise Financial Incand 8 others13G/A8.60%4.56M shares−1.30 ppfrom 9.90%Dec 31, 2025SEC
Aug 14, 202511:15 AM ETAmeriprise Financial Incand 9 others13G/A9.90%5.40M shares+1.30 ppfrom 8.60%Jun 30, 2025SEC
May 15, 20252:11 PM ETBrown Capital Management LLC13G/A4.76%2.60M shares−0.28 ppfrom 5.04%Below 5%Mar 31, 2025SEC
May 15, 202512:51 PM ETBrown Capital Management LLC13G/A5.04%2.92M shares0.00 ppfrom 5.04%Dec 31, 2024SEC
Apr 30, 202510:59 AM ETVanguard Group Inc13G/A6.35%3.49M shares–Mar 31, 2025SEC
Feb 14, 20254:09 PM ETBrown Capital Management LLC13G/A5.04%2.92M shares–Dec 31, 2024SEC
Feb 14, 20252:24 PM ETAmeriprise Financial Incand 7 others13G/A8.60%4.95M shares–Dec 31, 2024SEC
Feb 12, 20259:28 AM ETFMR LLCand 1 other13G/A0.20%93.6K shares–Below 5%Dec 31, 2024SEC

Form 144: proposed insider sales

Notices from officers, directors and other affiliates planning to sell Energy Recovery, Inc. shares.

No Form 144 notices for Energy Recovery, Inc. are on file.