Robert Yu Lang Mao
President and CEO at Energy Recovery Inc.
Sits on 1 board. Last updated September 28, 2026
Time on boards
- Boards served
- 1
- Current seats
- 1
- Board service
- 4 years
- Director since
- 2023
4 years of board service in total across 1 board, counting each seat separately. Longest: Energy Recovery Inc., 3 years.
Energy Recovery Inc.
Director · President and CEO
Chief executive roles
Energy Recovery Inc.
· President and CEO
Dates unknown
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
| Date | Company | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| May 23, 2024 | Energy Recovery Inc. | Option exercise | +10,752 | $7.79 | $83,758 |
| May 23, 2024 | Energy Recovery Inc. | Option exercise | +2,084 | $7.79 | $16,234 |
| May 22, 2024 | Energy Recovery Inc. | Option exercise | +21,859 | $7.79 | $170,282 |
| May 22, 2024 | Energy Recovery Inc. | Option exercise | +5,208 | $7.79 | $40,570 |
| May 22, 2024 | Energy Recovery Inc. | Open-market sale | −21,045 | $13.86 | $291,684 |
| Mar 4, 2024 | Energy Recovery Inc. | Option exercise | +20,509 | $2.92 | $59,886 |
| Mar 4, 2024 | Energy Recovery Inc. | Open-market sale | −20,509 | $15.74 | $322,812 |
| Mar 4, 2024 | Energy Recovery Inc. | Option exercise | +15,327 | $8.60 | $131,812 |
| Mar 4, 2024 | Energy Recovery Inc. | Open-market sale | −15,270 | $15.74 | $240,350 |
| Mar 4, 2024 | Energy Recovery Inc. | Option exercise | +16,726 | $7.71 | $128,957 |
| Mar 4, 2024 | Energy Recovery Inc. | Option exercise | +15,879 | $8.49 | $134,813 |
| Mar 4, 2024 | Energy Recovery Inc. | Option exercise | +21,303 | $9.98 | $212,604 |
| Mar 1, 2024 | Energy Recovery Inc. | Option exercise | +5,142 | $3.53 | $18,151 |
| Mar 1, 2024 | Energy Recovery Inc. | Option exercise | +32,883 | $2.92 | $96,018 |
| Mar 1, 2024 | Energy Recovery Inc. | Open-market sale | −5,142 | $16.22 | $83,403 |
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