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United States Machinery, Equipment & Components

Energy Recovery Inc (ERII)

Track

Over the last 90 days, Energy Recovery Inc. has seen significant net selling activity totaling $1.53 million. While one insider made a purchase, the majority of transactions were sales, with a notable large sale by Arve Hanstveit. The company's stock has experienced a 11.6% decline in the past 90 days.
Stock chart
Ticker: ERII Exchange: NSM
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings
Top insiders
Trades
Sabol Colin R
1 purchase — total 100,000 USD
Buy 15 Jun 2026
Value US$4,662,171.24 | Price 327.54 | Shares 31,234
Sale 15 Jun 2026
Value US$2,924,939.81 | Price 334.76 | Shares 65,661
Proposed sale 15 Jun 2026
Value US$626,002.87 | Price 354.77 | Shares 10,258
Buy 13 May 2026
Value US$166,840.00 | Price 8.34 | Shares 20,000
Sale 6 Apr 2026
Value US$24,891.51 | Price 10.29 | Shares 2,419
Sale 2 Apr 2026
Value US$1,676,060.88 | Price 10.14 | Shares 165,292
Sale 10 Mar 2026
Value US$273,975.00 | Price 10.96 | Shares 25,000
Proposed sale 10 Mar 2026
Value US$273,717.59 | Price 10.95 | Shares 25,000
Sale 6 Mar 2026
Value US$122,942.93 | Price 10.62 | Shares 11,582
Proposed sale 6 Mar 2026
Value US$122,788.39 | Price 10.60 | Shares 11,582
Sale 5 Mar 2026
Value US$411,456.78 | Price 10.71 | Shares 38,418
Sale 5 Mar 2026
Value US$2,875.04 | Price 10.57 | Shares 272
Proposed sale 5 Mar 2026
Value US$2,875.04 | Price 10.57 | Shares 272
Planned sale 4 Mar 2026
Value US$218,308.75 | Price 10.61 | Shares 20,568
Proposed sale 4 Mar 2026
Value US$213,866.06 | Price 10.40 | Shares 20,568
Planned sale 6 Feb 2026
Value US$9,780.44 | Price 15.14 | Shares 646
Proposed sale 6 Feb 2026
Value US$9,780.44 | Price 15.14 | Shares 646
Planned sale 5 Feb 2026
Value US$10,563.16 | Price 14.59 | Shares 724
Planned sale 5 Feb 2026
Value US$12,985.10 | Price 14.59 | Shares 890
Planned sale 2 Feb 2026
Value US$10,541.34 | Price 14.46 | Shares 729
Planned sale 2 Feb 2026
Value US$10,541.34 | Price 14.46 | Shares 729
Proposed sale 2 Feb 2026
Value US$10,541.34 | Price 14.46 | Shares 729
Planned sale 28 Jan 2026
Value US$105,793.05 | Price 14.55 | Shares 7,271
Proposed sale 28 Jan 2026
Value US$105,793.05 | Price 14.55 | Shares 7,271
Proposed sale 27 Jan 2026
Value US$154,549.72 | Price 14.45 | Shares 10,698
Proposed sale 27 Jan 2026
Value US$120,092.71 | Price 14.44 | Shares 8,315
Proposed sale 27 Jan 2026
Value US$50,277.18 | Price 14.42 | Shares 3,486
Proposed sale 27 Jan 2026
Value US$35,199.60 | Price 14.44 | Shares 2,438
Proposed sale 27 Jan 2026
Value US$89,262.92 | Price 14.44 | Shares 6,181
Sale 5 Dec 2025
Value US$220,605.00 | Price 14.71 | Shares 15,000
Proposed sale 5 Dec 2025
Value US$220,294.90 | Price 14.69 | Shares 15,000
Sale 4 Dec 2025
Value US$224,505.00 | Price 14.97 | Shares 15,000
Proposed sale 4 Dec 2025
Value US$224,240.21 | Price 14.95 | Shares 15,000
Planned sale 24 Oct 2025
Value US$63,540.00 | Price 18.00 | Shares 3,530
Planned sale 24 Oct 2025
Value US$101,484.00 | Price 18.00 | Shares 5,638
Proposed sale 24 Oct 2025
Value US$165,024.00 | Price 18.00 | Shares 9,168
Planned sale 23 Oct 2025
Value US$61,775.00 | Price 17.50 | Shares 3,530
Proposed sale 23 Oct 2025
Value US$61,775.00 | Price 17.50 | Shares 3,530
Planned sale 20 Oct 2025
Value US$60,010.00 | Price 17.00 | Shares 3,530
Proposed sale 20 Oct 2025
Value US$60,010.00 | Price 17.00 | Shares 3,530
Planned sale 16 Oct 2025
Value US$58,245.00 | Price 16.50 | Shares 3,530
Proposed sale 16 Oct 2025
Value US$58,245.00 | Price 16.50 | Shares 3,530
Planned sale 3 Oct 2025
Value US$40,464.00 | Price 16.00 | Shares 2,529
Planned sale 3 Oct 2025
Value US$16,608.00 | Price 16.00 | Shares 1,038
Proposed sale 3 Oct 2025
Value US$57,072.00 | Price 16.00 | Shares 3,567
Planned sale 18 Sep 2025
Value US$233,139.04 | Price 15.09 | Shares 15,454
Proposed sale 18 Sep 2025
Value US$233,144.61 | Price 15.09 | Shares 15,454
Planned sale 11 Sep 2025
Value US$486,868.54 | Price 14.51 | Shares 33,554
Proposed sale 11 Sep 2025
Value US$487,115.16 | Price 14.52 | Shares 33,554
Planned sale 28 Jul 2025
Value US$75,256.39 | Price 13.97 | Shares 5,387
Proposed sale 28 Jul 2025
Value US$75,256.39 | Price 13.97 | Shares 5,387
Sale 12 Jun 2025
Value US$380,400.00 | Price 12.68 | Shares 30,000
Proposed sale 12 Jun 2025
Value US$379,979.89 | Price 12.67 | Shares 30,000
Sale 11 Jun 2025
Value US$255,000.00 | Price 12.75 | Shares 20,000
Proposed sale 11 Jun 2025
Value US$254,731.93 | Price 12.74 | Shares 20,000
Buy 14 May 2025
Value US$51,569.70 | Price 12.28 | Shares 4,200
Buy 13 May 2025
Value US$51,240.00 | Price 12.20 | Shares 4,200
Proposed sale 24 Apr 2025
Value US$188,110.00 | Price 14.90 | Shares 12,624
Proposed sale 17 Mar 2025
Value US$777,225.78 | Price 16.20 | Shares 47,989
Sale 11 Mar 2025
Value US$816,950.00 | Price 16.34 | Shares 50,000
Proposed sale 11 Mar 2025
Value US$816,243.32 | Price 16.32 | Shares 50,000
Planned sale 11 Mar 2025
Value US$29,911.89 | Price 16.23 | Shares 1,843
Proposed sale 11 Mar 2025
Value US$29,911.89 | Price 16.23 | Shares 1,843
Planned sale 20 Feb 2025
Value US$330,709.37 | Price 15.42 | Shares 21,444
Proposed sale 20 Feb 2025
Value US$333,239.76 | Price 15.54 | Shares 21,444
Sale 11 Dec 2024
Value US$337,400.00 | Price 16.87 | Shares 20,000
Proposed sale 11 Dec 2024
Value US$337,058.36 | Price 16.85 | Shares 20,000
Proposed sale 11 Nov 2024
Value US$84,392.45 | Price 20.06 | Shares 4,207
Planned sale 11 Nov 2024
Value US$84,392.42 | Price 20.06 | Shares 4,207
Planned sale 8 Nov 2024
Value US$73,175.54 | Price 20.15 | Shares 3,631
Proposed sale 8 Nov 2024
Value US$73,176.27 | Price 20.15 | Shares 3,631
Planned sale 7 Nov 2024
Value US$392,360.00 | Price 20.00 | Shares 19,618
Proposed sale 7 Nov 2024
Value US$392,362.50 | Price 20.00 | Shares 19,618
Sale 28 Oct 2024
Value US$116,946.89 | Price 17.98 | Shares 6,505
Sale 28 Oct 2024
Value US$45,833.70 | Price 17.97 | Shares 2,550
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2026-06-17 2026-06-15 B Purchase
2.6
Sabol Colin R
Non-Executive Director
31,234 +22.1%
327.54
US$4,662,171 		31,234 +22.1% 327.54 US$4,662,171
2026-06-17 2026-06-15 S Sale
1.8
BUEHLER ALEXANDER J

Interim President and CEO

Executive Director
65,661 -18.0%
334.76
US$2,924,940 		65,661 -18.0% 334.76 US$2,924,940
2026-06-15 2026-06-15 PrS Proposed sale
1.8
BUEHLER ALEXANDER J

Officer; Director

Executive Director
10,258
354.77
US$626,003 		10,258 354.77 US$626,003
2026-05-15 2026-05-13 B Purchase
2.2
TONDREAU PAMELA L.
Non-Executive Director
20,000 +115.2%
8.34
US$166,840 		20,000 +115.2% 8.34 US$166,840
2026-04-08 2026-04-06 S Sale
3.0
Hanstveit Arve
Non-Executive Director
2,419 -0.6%
10.29
US$24,892 		2,419 -0.6% 10.29 US$24,892
2026-04-06 2026-04-02 S Sale
3.0
Hanstveit Arve
Non-Executive Director
165,292 -30.0%
10.14
US$1,676,061 		165,292 -30.0% 10.14 US$1,676,061
2026-03-11 2026-03-10 S Sale
3.0
Hanstveit Arve
Non-Executive Director
25,000 -4.3%
10.96
US$273,975 		25,000 -4.3% 10.96 US$273,975
2026-03-10 2026-03-10 PrS Proposed sale
3.0
Hanstveit Arve

Director

Non-Executive Director
25,000
10.95
US$273,718 		25,000 10.95 US$273,718
2026-03-09 2026-03-06 S Sale
3.0
Hanstveit Arve
Non-Executive Director
11,582 -2.0%
10.62
US$122,943 		11,582 -2.0% 10.62 US$122,943
2026-03-06 2026-03-06 PrS Proposed sale
3.0
Hanstveit Arve

Director

Non-Executive Director
11,582
10.60
US$122,788 		11,582 10.60 US$122,788
2026-03-09 2026-03-05 S Sale
3.0
Hanstveit Arve
Non-Executive Director
38,418 -6.1%
10.71
US$411,457 		38,418 -6.1% 10.71 US$411,457
2026-03-06 2026-03-05 S Sale
Ramanan Natarajan

Chief Technology Officer

Officer
272 -0.5%
10.57
US$2,875 		272 -0.5% 10.57 US$2,875
2026-03-05 2026-03-05 PrS Proposed sale
Ramanan Natarajan

Officer

Officer
272
10.57
US$2,875 		272 10.57 US$2,875
2026-03-06 2026-03-04 PlS Planned sale
3.7
Clemente Rodney

SVP, Water

Officer
20,568 -15.1%
10.61
US$218,309 		20,568 -15.1% 10.61 US$218,309
2026-03-04 2026-03-04 PrS Proposed sale
3.7
Clemente Rodney

Officer

Officer
20,568
10.40
US$213,866 		20,568 10.40 US$213,866
2026-02-09 2026-02-06 PlS Planned sale
4.1
Yeung William

Chief Legal Officer

Officer
646 -0.8%
15.14
US$9,780 		646 -0.8% 15.14 US$9,780
2026-02-06 2026-02-06 PrS Proposed sale
4.1
Yeung William

Officer

Officer
646
15.14
US$9,780 		646 15.14 US$9,780
2026-02-09 2026-02-05 PlS Planned sale
3.7
Clemente Rodney

SVP, Water

Officer
724 -0.8%
14.59
US$10,563 		724 -0.8% 14.59 US$10,563
2026-02-09 2026-02-05 PlS Planned sale
4.1
Yeung William

Chief Legal Officer

Officer
890 -1.1%
14.59
US$12,985 		890 -1.1% 14.59 US$12,985
2026-02-03 2026-02-02 PlS Planned sale
4.1
Yeung William

Chief Legal Officer

Officer
729 -0.9%
14.46
US$10,541 		729 -0.9% 14.46 US$10,541
2026-02-03 2026-02-02 PlS Planned sale
4.1
Yeung William

Chief Legal Officer

Officer
729 -0.9%
14.46
US$10,541 		729 -0.9% 14.46 US$10,541
2026-02-02 2026-02-02 PrS Proposed sale
4.1
Yeung William

Officer

Officer
729
14.46
US$10,541 		729 14.46 US$10,541
2026-02-03 2026-01-28 PlS Planned sale
4.1
Yeung William

Chief Legal Officer

Officer
7,271 -7.5%
14.55
US$105,793 		7,271 -7.5% 14.55 US$105,793
2026-01-28 2026-01-28 PrS Proposed sale
4.1
Yeung William

Officer

Officer
7,271
14.55
US$105,793 		7,271 14.55 US$105,793
2026-01-27 2026-01-27 PrS Proposed sale
2.3
Moon David W

Officer; Director

Executive Director
10,698
14.45
US$154,550 		10,698 14.45 US$154,550
2026-01-27 2026-01-27 PrS Proposed sale
3.7
Clemente Rodney

Officer

Officer
8,315
14.44
US$120,093 		8,315 14.44 US$120,093
2026-01-27 2026-01-27 PrS Proposed sale
Mancini Michael S.

Officer

Officer
3,486
14.42
US$50,277 		3,486 14.42 US$50,277
2026-01-27 2026-01-27 PrS Proposed sale
Hostetler Matthew

Officer

Officer
2,438
14.44
US$35,200 		2,438 14.44 US$35,200
2026-01-27 2026-01-27 PrS Proposed sale
4.1
Yeung William

Officer

Officer
6,181
14.44
US$89,263 		6,181 14.44 US$89,263
2025-12-08 2025-12-05 S Sale
3.0
Hanstveit Arve
Non-Executive Director
15,000 -2.3%
14.71
US$220,605 		15,000 -2.3% 14.71 US$220,605
2025-12-05 2025-12-05 PrS Proposed sale
3.0
Hanstveit Arve

Director

Non-Executive Director
15,000
14.69
US$220,295 		15,000 14.69 US$220,295
2025-12-08 2025-12-04 S Sale
3.0
Hanstveit Arve
Non-Executive Director
15,000 -2.3%
14.97
US$224,505 		15,000 -2.3% 14.97 US$224,505
2025-12-04 2025-12-04 PrS Proposed sale
3.0
Hanstveit Arve

Director

Non-Executive Director
15,000
14.95
US$224,240 		15,000 14.95 US$224,240
2025-10-27 2025-10-24 PlS Planned sale
4.1
Yeung William

Chief Legal Officer

Officer
3,530 -3.5%
18.00
US$63,540 		3,530 -3.5% 18.00 US$63,540
2025-10-27 2025-10-24 PlS Planned sale
4.1
Yeung William

Chief Legal Officer

Officer
5,638 -5.5%
18.00
US$101,484 		5,638 -5.5% 18.00 US$101,484
2025-10-24 2025-10-24 PrS Proposed sale
4.1
Yeung William

Officer

Officer
9,168
18.00
US$165,024 		9,168 18.00 US$165,024
2025-10-27 2025-10-23 PlS Planned sale
4.1
Yeung William

Chief Legal Officer

Officer
3,530 -3.5%
17.50
US$61,775 		3,530 -3.5% 17.50 US$61,775
2025-10-23 2025-10-23 PrS Proposed sale
4.1
Yeung William

Officer

Officer
3,530
17.50
US$61,775 		3,530 17.50 US$61,775
2025-10-22 2025-10-20 PlS Planned sale
4.1
Yeung William

Chief Legal Officer

Officer
3,530 -3.5%
17.00
US$60,010 		3,530 -3.5% 17.00 US$60,010
2025-10-20 2025-10-20 PrS Proposed sale
4.1
Yeung William

Officer

Officer
3,530
17.00
US$60,010 		3,530 17.00 US$60,010
2025-10-17 2025-10-16 PlS Planned sale
4.1
Yeung William

Chief Legal Officer

Officer
3,530 -3.5%
16.50
US$58,245 		3,530 -3.5% 16.50 US$58,245
2025-10-16 2025-10-16 PrS Proposed sale
4.1
Yeung William

Officer

Officer
3,530
16.50
US$58,245 		3,530 16.50 US$58,245
2025-10-07 2025-10-03 PlS Planned sale
4.1
Yeung William

Chief Legal Officer

Officer
2,529 -2.5%
16.00
US$40,464 		2,529 -2.5% 16.00 US$40,464
2025-10-07 2025-10-03 PlS Planned sale
4.1
Yeung William

Chief Legal Officer

Officer
1,038 -1.1%
16.00
US$16,608 		1,038 -1.1% 16.00 US$16,608
2025-10-03 2025-10-03 PrS Proposed sale
4.1
Yeung William

Officer

Officer
3,567
16.00
US$57,072 		3,567 16.00 US$57,072
2025-09-22 2025-09-18 PlS Planned sale
4.1
Yeung William

Chief Legal Officer

Officer
15,454 -13.7%
15.09
US$233,139 		15,454 -13.7% 15.09 US$233,139
2025-09-18 2025-09-18 PrS Proposed sale
4.1
Yeung William

Officer

Officer
15,454
15.09
US$233,145 		15,454 15.09 US$233,145
2025-09-15 2025-09-11 PlS Planned sale
4.1
Yeung William

Chief Legal Officer

Officer
33,554 -25.6%
14.51
US$486,869 		33,554 -25.6% 14.51 US$486,869
2025-09-11 2025-09-11 PrS Proposed sale
4.1
Yeung William

Officer

Officer
33,554
14.52
US$487,115 		33,554 14.52 US$487,115
2025-07-29 2025-07-28 PlS Planned sale
3.7
Clemente Rodney

SVP, Water

Officer
5,387 -5.1%
13.97
US$75,256 		5,387 -5.1% 13.97 US$75,256
2025-07-28 2025-07-28 PrS Proposed sale
3.7
Clemente Rodney

Officer

Officer
5,387
13.97
US$75,256 		5,387 13.97 US$75,256
2025-06-13 2025-06-12 S Sale
3.0
Hanstveit Arve
Non-Executive Director
30,000 -4.4%
12.68
US$380,400 		30,000 -4.4% 12.68 US$380,400
2025-06-12 2025-06-12 PrS Proposed sale
3.0
Hanstveit Arve

Director

Non-Executive Director
30,000
12.67
US$379,980 		30,000 12.67 US$379,980
2025-06-13 2025-06-11 S Sale
3.0
Hanstveit Arve
Non-Executive Director
20,000 -2.8%
12.75
US$255,000 		20,000 -2.8% 12.75 US$255,000
2025-06-11 2025-06-11 PrS Proposed sale
3.0
Hanstveit Arve

Director

Non-Executive Director
20,000
12.74
US$254,732 		20,000 12.74 US$254,732
2025-05-15 2025-05-14 B Purchase
2.2
TONDREAU PAMELA L.
Non-Executive Director
4,200 +11.4%
12.28
US$51,570 		4,200 +11.4% 12.28 US$51,570
2025-05-15 2025-05-13 B Purchase
2.3
Moon David W

President and CEO

Executive Director
4,200 +12.8%
12.20
US$51,240 		4,200 +12.8% 12.20 US$51,240
2025-04-25 2025-04-24 PrS Proposed sale
4.0
FARSHAD GHASRIPOOR

Former Officer

Officer
12,624
14.90
US$188,110 		12,624 14.90 US$188,110
2025-03-17 2025-03-17 PrS Proposed sale
4.0
Ghasripoor Farshad

Former Officer

Officer
47,989
16.20
US$777,226 		47,989 16.20 US$777,226
2025-03-13 2025-03-11 S Sale
3.0
Hanstveit Arve
Non-Executive Director
50,000 -6.7%
16.34
US$816,950 		50,000 -6.7% 16.34 US$816,950
2025-03-12 2025-03-11 PlS Planned sale
3.7
Clemente Rodney

SVP, Water

Officer
1,843 -1.7%
16.23
US$29,912 		1,843 -1.7% 16.23 US$29,912
2025-03-11 2025-03-11 PrS Proposed sale
3.7
Clemente Rodney

Officer

Officer
1,843
16.23
US$29,912 		1,843 16.23 US$29,912
2025-03-11 2025-03-11 PrS Proposed sale
3.0
Hanstveit Arve

Director

Non-Executive Director
50,000
16.32
US$816,243 		50,000 16.32 US$816,243
2025-02-24 2025-02-20 PlS Planned sale
3.7
Clemente Rodney

SVP, Water

Officer
21,444 -16.2%
15.42
US$330,709 		21,444 -16.2% 15.42 US$330,709
2025-02-20 2025-02-20 PrS Proposed sale
3.7
Clemente Rodney

Officer

Officer
21,444
15.54
US$333,240 		21,444 15.54 US$333,240
2024-12-17 2024-12-11 S Sale
3.0
Hanstveit Arve
Non-Executive Director
20,000 -2.6%
16.87
US$337,400 		20,000 -2.6% 16.87 US$337,400
2024-12-11 2024-12-11 PrS Proposed sale
3.0
Hanstveit Arve

Director

Non-Executive Director
20,000
16.85
US$337,058 		20,000 16.85 US$337,058
2024-11-12 2024-11-11 PrS Proposed sale
3.7
Clemente Rodney

Officer

Officer
4,207
20.06
US$84,392 		4,207 20.06 US$84,392
2024-11-12 2024-11-11 PlS Planned sale
3.7
Clemente Rodney

SVP, Water

Officer
4,207 -3.8%
20.06
US$84,392 		4,207 -3.8% 20.06 US$84,392
2024-11-12 2024-11-08 PlS Planned sale
3.7
Clemente Rodney

SVP, Water

Officer
3,631 -3.2%
20.15
US$73,176 		3,631 -3.2% 20.15 US$73,176
2024-11-08 2024-11-08 PrS Proposed sale
3.7
Clemente Rodney

Officer

Officer
3,631
20.15
US$73,176 		3,631 20.15 US$73,176
2024-11-12 2024-11-07 PlS Planned sale
3.7
Clemente Rodney

SVP, Water

Officer
19,618 -14.7%
20.00
US$392,360 		19,618 -14.7% 20.00 US$392,360
2024-11-07 2024-11-07 PrS Proposed sale
3.7
Clemente Rodney

Officer

Officer
19,618
20.00
US$392,362 		19,618 20.00 US$392,362
2024-10-30 2024-10-28 S Sale
3.7
Clemente Rodney

SVP, Water

Officer
6,505 -4.6%
17.98
US$116,947 		6,505 -4.6% 17.98 US$116,947
2024-10-30 2024-10-28 S Sale
2.3
Moon David W

President and CEO

Executive Director
2,550 -2.8%
17.97
US$45,834 		2,550 -2.8% 17.97 US$45,834
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