$ERII

$6.95 +$0.09 (1.31%) Close

$ERII Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 51.0M shares outstanding

Who owns ERII?

By type of holder

Institutions 85.4% Insiders 4.0% Everyone else 10.6%

Concentration Top 10 holders own 44.7%

BlackRock, Inc. 12.4% · Ameriprise Financial Inc 1.3%

Institutional ownership

85.4%

-1.3 pts vs last qtr

Institutional holders

196

-1 vs last qtr

Net shares bought

−684.5K

by institutions in Q2 2026

New / sold out

40 / 41

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Mackenzie Financial Corp NEW +1.2M
Marshall Wace, LLP +571.0K

Biggest sellers in Q2 2026

Ameriprise Financial Inc −4.6M
Diamond Hill Capital Management, LLC (Investment Advisor) SOLD OUT −673.0K

Who is planning to sell?

Notices of proposed sale, last 12 months

$1.83M

17 notices from 8 people

Shares covered

149.5K

0.29% of the company

Arranged in advance

22%

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Hanstveit Arve Director $841K
Clemente Rodney Officer $380K

Every notice on Red Flags →

A Form 144 is notice of a planned sale, not the sale itself. What insiders actually sold is on Insider Transactions.

Is your stake being diluted?

Diluted share count, FY2016–FY2025

−2.3%

−0.26% a year

Each share's claim on the business

+2.4%

grew without buying or selling a share

Spent on buybacks vs paid in stock

$160M vs $61.7M

over 10 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years59% 3–5 years11% 1–3 years14% Under 1 year16%

Quarterly turnover

21.5%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting ERII on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
B BlackRock, Inc.	6.3M	12.43%	+253.3K (+4.2%)	≤2021	0.0%
Shares held by quarter Peak holding6.3M (Q2'26) Change over 8 quarters+883.3K Share of the company12.430% BlackRock, Inc.'s full portfolio →
AF Ameriprise Financial Inc	679.2K	1.33%	−4.6M (−87.1%)	2023	0.0%
Shares held by quarter Peak holding5.4M (Q2'25) Change over 8 quarters−3.3M Share of the company1.330% Ameriprise Financial Inc's full portfolio →

BlackRock, Inc.

6.3M

% of company

12.43%

Change vs last qtr

+253.3K (+4.2%)

Held since

≤2021

Ameriprise Financial Inc

679.2K

% of company

1.33%

Change vs last qtr

−4.6M (−87.1%)

Held since

2023

28 more super investors behind a free account

See every manager holding Energy Recovery, Inc., how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting ERII on Form N-PORT; together they hold 29.9% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$13.9M	1.5M	3.01%	0.00%	June 30, 2026
IR iShares Russell 2000 ETF iShares Trust	$12.1M	1.3M	2.64%	0.01%	June 30, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$13.9M

% of company

3.01%

% of the fund

0.00%

As of

June 30, 2026

iShares Russell 2000 ETF

iShares Trust

Position value

$12.1M

% of company

2.64%

% of the fund

0.01%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding Energy Recovery, Inc. and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
HA Hanstveit Arve Insider	940.6K	1.84%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company1.840% Hanstveit Arve's insider activity →
MD Moon David W Insider	270.0K	0.53%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.530% Moon David W's insider activity →

Hanstveit Arve

Insider

940.6K

% of company

1.84%

Change vs last qtr

—

Held since

—

Moon David W

Insider

270.0K

% of company

0.53%

Change vs last qtr

—

Held since

—

12 more holders behind a free account

See every insider and 5%+ holder of Energy Recovery, Inc..

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