ERII
Energy Recovery Inc
NASDAQ: ERII · INDUSTRIALS · POLLUTION & TREATMENT CONTROLS
$10.70
-3.52% today
Updated 2026-04-29
Market cap
$595.91M
P/E ratio
26.86
P/S ratio
4.42x
EPS (TTM)
$0.42
Dividend yield
—
52W range
$9 – $18
Volume
0.9M
Energy Recovery Inc (ERII) Insider transactions
Net insider activity
Net buying (91,591 shares)
Buy transactions
27
Sell transactions
73
All transactions
| Date | Insider | Title | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-04-06 | HANSTVEIT, ARVE | Director | Sale | 2,419 | $10.29 | $24891.51 |
| 2026-04-02 | HANSTVEIT, ARVE | Director | Sale | 165,292 | $10.14 | $1.68M |
| 2026-03-10 | HANSTVEIT, ARVE | Director | Sale | 25,000 | $10.96 | $273975.00 |
| 2026-03-06 | HANSTVEIT, ARVE | Director | Sale | 11,582 | $10.62 | $122942.93 |
| 2026-03-05 | RAMANAN, NATARAJAN | Chief Technology Officer | Sale | 272 | $10.57 | $2875.04 |
| 2026-03-05 | HANSTVEIT, ARVE | Director | Sale | 38,418 | $10.71 | $411456.78 |
| 2026-03-04 | CLEMENTE, RODNEY | SVP, Water | Sale | 20,568 | $10.61 | $218308.75 |
| 2026-03-03 | RAMANAN, NATARAJAN | Chief Technology Officer | Sale | 2,724 | $10.22 | $27839.28 |
| 2026-02-17 | YEUNG, WILLIAM | Chief Legal Officer | Buy | 25,959 | — | — |
| 2026-02-17 | RAMANAN, NATARAJAN | Chief Technology Officer | Buy | 29,106 | — | — |
| 2026-02-17 | MOON, DAVID W | Director, President and CEO | Buy | 81,812 | — | — |
| 2026-02-17 | MANCINI, MICHAEL S. | Chief Financial Officer | Buy | 45,626 | — | — |
| 2026-02-17 | HOSTETLER, MATTHEW | Chief Human Resources Officer | Buy | 25,959 | — | — |
| 2026-02-17 | CLEMENTE, RODNEY | SVP, Water | Buy | 45,626 | — | — |
| 2026-02-06 | YEUNG, WILLIAM | Chief Legal Officer | Sale | 646 | $15.14 | $9780.44 |
| 2026-02-05 | YEUNG, WILLIAM | Chief Legal Officer | Sale | 890 | $14.59 | $12985.10 |
| 2026-02-05 | CLEMENTE, RODNEY | SVP, Water | Sale | 724 | $14.59 | $10563.16 |
| 2026-02-02 | YEUNG, WILLIAM | Chief Legal Officer | Sale | 729 | $14.46 | $10541.34 |
| 2026-01-30 | YEUNG, WILLIAM | Chief Legal Officer | Sale | 8,622 | $14.30 | $123294.60 |
| 2026-01-30 | YEUNG, WILLIAM | Chief Legal Officer | Sale | 1,003 | $14.65 | $14693.95 |
| 2026-01-30 | MOON, DAVID W | Director, President and CEO | Sale | 17,160 | $14.30 | $245388.00 |
| 2026-01-30 | MANCINI, MICHAEL S. | Chief Financial Officer | Sale | 4,798 | $14.30 | $68611.40 |
| 2026-01-30 | HOSTETLER, MATTHEW | Chief Human Resources Officer | Sale | 3,359 | $14.30 | $48033.70 |
| 2026-01-30 | CLEMENTE, RODNEY | SVP, Water | Sale | 8,397 | $14.30 | $120077.10 |
| 2026-01-30 | CLEMENTE, RODNEY | SVP, Water | Sale | 694 | $14.65 | $10167.10 |
| 2026-01-28 | YEUNG, WILLIAM | Chief Legal Officer | Sale | 7,271 | $14.55 | $105793.05 |
| 2025-12-05 | HANSTVEIT, ARVE | Director | Sale | 15,000 | $14.71 | $220605.00 |
| 2025-12-04 | HANSTVEIT, ARVE | Director | Sale | 15,000 | $14.97 | $224505.00 |
| 2025-10-24 | YEUNG, WILLIAM | Chief Legal Officer | Sale | 5,638 | $10.19 | $57451.22 |
| 2025-10-24 | YEUNG, WILLIAM | Chief Legal Officer | Sale | 3,530 | $7.50 | $26475.00 |
| 2025-10-24 | YEUNG, WILLIAM | Chief Legal Officer | Sale | 5,638 | $18.00 | $101484.00 |
| 2025-10-24 | YEUNG, WILLIAM | Chief Legal Officer | Sale | 3,530 | $18.00 | $63540.00 |
| 2025-10-23 | YEUNG, WILLIAM | Chief Legal Officer | Sale | 3,530 | $7.50 | $26475.00 |
| 2025-10-23 | YEUNG, WILLIAM | Chief Legal Officer | Buy | 3,530 | $7.50 | $26475.00 |
| 2025-10-20 | YEUNG, WILLIAM | Chief Legal Officer | Sale | 3,530 | $7.50 | $26475.00 |
| 2025-10-20 | YEUNG, WILLIAM | Chief Legal Officer | Sale | 3,530 | $17.00 | $60010.00 |
| 2025-10-16 | YEUNG, WILLIAM | Chief Legal Officer | Sale | 3,530 | $7.50 | $26475.00 |
| 2025-10-16 | YEUNG, WILLIAM | Chief Legal Officer | Buy | 3,530 | $7.50 | $26475.00 |
| 2025-10-03 | YEUNG, WILLIAM | Chief Legal Officer | Sale | 2,529 | $7.50 | $18967.50 |
| 2025-10-03 | YEUNG, WILLIAM | Chief Legal Officer | Sale | 1,038 | $7.50 | $7785.00 |
| 2025-10-03 | YEUNG, WILLIAM | Chief Legal Officer | Buy | 2,529 | $7.50 | $18967.50 |
| 2025-10-03 | YEUNG, WILLIAM | Chief Legal Officer | Sale | 1,038 | $16.00 | $16608.00 |
| 2025-09-18 | YEUNG, WILLIAM | Chief Legal Officer | Sale | 15,454 | $8.95 | $138313.30 |
| 2025-09-18 | YEUNG, WILLIAM | Chief Legal Officer | Buy | 15,454 | $8.95 | $138313.30 |
| 2025-09-11 | YEUNG, WILLIAM | Chief Legal Officer | Sale | 30,877 | $8.95 | $276349.15 |
| 2025-09-11 | YEUNG, WILLIAM | Chief Legal Officer | Sale | 33,554 | $14.51 | $486868.54 |
| 2025-09-11 | YEUNG, WILLIAM | Chief Legal Officer | Buy | 30,877 | $8.95 | $276349.15 |
| 2025-07-28 | CLEMENTE, RODNEY | SVP, Water | Sale | 5,387 | $13.97 | $75256.39 |
| 2025-07-25 | YEUNG, WILLIAM | Chief Legal Officer | Sale | 1,989 | $13.88 | $27607.32 |
| 2025-07-25 | CLEMENTE, RODNEY | SVP, Water | Sale | 2,320 | $13.88 | $32201.60 |
| 2025-06-12 | HANSTVEIT, ARVE | Director | Sale | 30,000 | $12.68 | $380400.00 |
| 2025-06-11 | HANSTVEIT, ARVE | Director | Sale | 20,000 | $12.75 | $255000.00 |
| 2025-06-05 | TONDREAU, PAMELA L. | Director | Buy | 14,847 | — | — |
| 2025-06-05 | SABOL, COLIN R | Director | Buy | 12,038 | — | — |
| 2025-06-05 | HANSTVEIT, ARVE | Director | Buy | 12,038 | — | — |
| 2025-06-05 | CHOW, JOAN KAI | Director | Buy | 12,038 | — | — |
| 2025-06-05 | BUEHLER, ALEXANDER J | Director | Buy | 12,038 | — | — |
| 2025-05-14 | TONDREAU, PAMELA L. | Director | Buy | 4,200 | $12.28 | $51569.70 |
| 2025-05-13 | MOON, DAVID W | Director, President and CEO | Buy | 4,200 | $12.20 | $51240.00 |
| 2025-03-11 | HANSTVEIT, ARVE | Director | Sale | 50,000 | $16.34 | $816950.00 |
| 2025-03-11 | CLEMENTE, RODNEY | SVP, Water | Sale | 1,843 | $16.23 | $29911.89 |
| 2025-03-10 | YEUNG, WILLIAM | Chief Legal Officer | Sale | 944 | $16.37 | $15453.28 |
| 2025-03-10 | CLEMENTE, RODNEY | SVP, Water | Sale | 794 | $16.37 | $12997.78 |
| 2025-03-03 | RAMANAN, NATARAJAN | Chief Technology Officer | Buy | 65,030 | $15.12 | $983253.60 |
| 2025-03-03 | RAMANAN, NATARAJAN | Chief Technology Officer | Buy | 26,455 | — | — |
| 2025-02-20 | CLEMENTE, RODNEY | SVP, Water | Sale | 21,444 | $15.42 | $330709.37 |
| 2025-02-04 | GHASRIPOOR, FARSHAD | Chief Technology Officer | Sale | 65,000 | — | — |
| 2025-02-03 | YEUNG, WILLIAM | Chief Legal Officer | Sale | 882 | $14.34 | $12647.88 |
| 2025-02-03 | GHASRIPOOR, FARSHAD | Chief Technology Officer | Sale | 1,420 | $14.34 | $20362.80 |
| 2025-02-03 | CLEMENTE, RODNEY | SVP, Water | Sale | 944 | $14.34 | $13536.96 |
| 2025-01-31 | YEUNG, WILLIAM | Chief Legal Officer | Sale | 627 | $14.56 | $9129.12 |
| 2025-01-31 | GHASRIPOOR, FARSHAD | Chief Technology Officer | Sale | 926 | $14.56 | $13482.56 |
| 2025-01-31 | CLEMENTE, RODNEY | SVP, Water | Sale | 615 | $14.56 | $8954.40 |
| 2025-01-30 | YEUNG, WILLIAM | Chief Legal Officer | Sale | 698 | $14.33 | $10002.34 |
| 2025-01-30 | GHASRIPOOR, FARSHAD | Chief Technology Officer | Sale | 1,034 | $14.33 | $14817.22 |
| 2025-01-30 | CLEMENTE, RODNEY | SVP, Water | Sale | 694 | $14.33 | $9945.02 |
| 2025-01-27 | YEUNG, WILLIAM | Chief Legal Officer | Sale | 4,061 | $14.40 | $58478.40 |
| 2025-01-27 | MOON, DAVID W | Director, President and CEO | Sale | 7,664 | $14.40 | $110361.60 |
| 2025-01-27 | GHASRIPOOR, FARSHAD | Chief Technology Officer | Sale | 5,721 | $14.40 | $82382.40 |
| 2025-01-27 | CLEMENTE, RODNEY | SVP, Water | Sale | 5,784 | $14.40 | $83289.60 |
| 2025-01-23 | YEUNG, WILLIAM | Chief Legal Officer | Buy | 23,956 | — | — |
| 2025-01-23 | MOON, DAVID W | Director, President and CEO | Buy | 88,980 | — | — |
| 2025-01-23 | MANCINI, MICHAEL S. | Chief Financial Officer | Buy | 34,223 | — | — |
| 2025-01-23 | CLEMENTE, RODNEY | SVP, Water | Buy | 34,223 | — | — |
| 2024-12-11 | HANSTVEIT, ARVE | Director | Sale | 20,000 | $16.87 | $337400.00 |
| 2024-11-11 | CLEMENTE, RODNEY | SVP, Water | Sale | 4,207 | $20.06 | $84392.42 |
| 2024-11-08 | CLEMENTE, RODNEY | SVP, Water | Sale | 3,631 | $20.15 | $73175.54 |
| 2024-11-07 | CLEMENTE, RODNEY | SVP, Water | Sale | 19,618 | $20.00 | $392360.00 |
| 2024-10-28 | MOON, DAVID W | Director, President and CEO | Sale | 2,550 | $17.97 | $45833.70 |
| 2024-10-28 | GHASRIPOOR, FARSHAD | Chief Technology Officer | Sale | 10,526 | $17.97 | $189120.64 |
| 2024-10-28 | CLEMENTE, RODNEY | SVP, Water | Sale | 6,505 | $17.98 | $116946.89 |
| 2024-08-19 | BUEHLER, ALEXANDER J | Director | Sale | 19,841 | $2.92 | $57935.72 |
| 2024-08-19 | BUEHLER, ALEXANDER J | Director | Buy | 19,841 | $2.92 | $57935.72 |
| 2024-08-05 | MOON, DAVID W | Director, President and CEO | Buy | 3,000 | $16.00 | $48009.00 |
| 2024-08-05 | MANCINI, MICHAEL S. | Chief Financial Officer | Buy | 229,322 | $16.03 | $3.68M |
| 2024-07-29 | YEUNG, WILLIAM | Chief Legal Officer | Sale | 2,012 | $14.63 | $29433.55 |
| 2024-07-29 | GHASRIPOOR, FARSHAD | Chief Technology Officer | Sale | 4,079 | $14.63 | $59671.69 |
| 2024-07-29 | CLEMENTE, RODNEY | SVP, Water | Sale | 2,353 | $14.63 | $34422.04 |
| 2024-06-18 | MOON, DAVID W | Director, President and CEO | Sale | 1,219 | $12.77 | $15565.41 |
| 2024-06-07 | HANSTVEIT, ARVE | Director | Sale | 20,000 | $13.20 | $263950.00 |