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Robeco Schweiz AG
> ERII
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 06/30/2023 | Energy Recovery, Inc. | ERII | 510,139 | 0 | 14,258,385,000 | 3,805,637,000 | $27,950.00 |
| 12/31/2022 | Energy Recovery, Inc. | ERII | 510,139 | 510,139 | 10,452,748,000 | 10,452,748,000 | $20,490.00 |
| 09/30/2013 | Energy Recovery, Inc. | ERII | 0 | -123,500 | 0 | -411,000 | |
| 06/30/2013 | Energy Recovery, Inc. | ERII | 0 | -123,500 | 0 | -411,000 | |
| 03/31/2013 | Energy Recovery, Inc. | ERII | 0 | -123,500 | 0 | -411,000 | |
| 12/31/2012 | Energy Recovery, Inc. | ERII | 123,500 | -80,000 | 411,000 | -195,000 | $3.33 |
| 09/30/2012 | Energy Recovery, Inc. | ERII | 203,500 | 99,500 | 606,000 | 159,000 | $2.98 |
| 06/30/2010 | Energy Recovery, Inc. | ERII | 104,000 | -469,700 | 447,000 | -3,213,000 | $4.30 |
| 03/31/2010 | Energy Recovery, Inc. | ERII | 573,700 | 0 | 3,660,000 | -201,000 | $6.38 |
| 12/31/2009 | Energy Recovery, Inc. | ERII | 573,700 | -6,300 | 3,861,000 | 398,000 | $6.73 |
| 09/30/2009 | Energy Recovery, Inc. | ERII | 580,000 | 100,000 | 3,463,000 | 60,000 | $5.97 |
| 06/30/2009 | Energy Recovery, Inc. | ERII | 480,000 | 30,000 | 3,403,000 | 41,000 | $7.09 |
| 03/31/2009 | Energy Recovery, Inc. | ERII | 450,000 | -50,000 | 3,362,000 | -428,000 | $7.47 |
| 12/31/2008 | Energy Recovery, Inc. | ERII | 500,000 | 0 | 3,790,000 | -740,000 | $7.58 |
| 09/30/2008 | Energy Recovery, Inc. | ERII | 500,000 | 500,000 | 4,530,000 | 4,530,000 | $9.06 |
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