Mao Robert Yu Lang

• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Earnings

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Abbreviations B: Buy, S: Sell, PP: Planned purchase, PS: Planned sale, O: Option / Other

Notification date	Transaction date	B/S Transaction type	Nb. shares Price Value	Number of shares	Price	Value	Details
2024-05-24	2024-05-22	Energy Recovery Inc (ERII)	S Sale	21,045 -8.2% 13.86 USD 291,656	21,045 -8.2%	13.86	USD 291,656
2024-03-06	2024-03-04	Energy Recovery Inc (ERII)	S Sale	15,270 -8.0% 15.74 USD 240,368	15,270 -8.0%	15.74	USD 240,368
2024-03-06	2024-03-04	Energy Recovery Inc (ERII)	S Sale	20,509 -10.4% 15.74 USD 322,877	20,509 -10.4%	15.74	USD 322,877
2024-03-04	2024-03-01	Energy Recovery Inc (ERII)	S Sale	32,883 -15.7% 16.21 USD 532,902	32,883 -15.7%	16.21	USD 532,902
2024-03-04	2024-03-01	Energy Recovery Inc (ERII)	S Sale	5,142 -2.4% 16.22 USD 83,403	5,142 -2.4%	16.22	USD 83,403
2024-03-04	2024-02-29	Energy Recovery Inc (ERII)	S Sale	39,314 -18.2% 15.58 USD 612,512	39,314 -18.2%	15.58	USD 612,512
2023-11-08	2023-11-07	Energy Recovery Inc (ERII)	S Sale	121,383 -53.7% 18.02 USD 2,187,322	121,383 -53.7%	18.02	USD 2,187,322
2023-11-08	2023-11-06	Energy Recovery Inc (ERII)	S Sale	130,000 -66.3% 17.76 USD 2,308,800	130,000 -66.3%	17.76	USD 2,308,800
2022-08-11	2022-08-09	Energy Recovery Inc (ERII)	S Sale	2,000 -100.0% 22.46 USD 44,927	2,000 -100.0%	22.46	USD 44,927
2020-12-15	2020-12-11	Energy Recovery Inc (ERII)	S Sale	9,500 -4.2% 12.22 USD 116,079	9,500 -4.2%	12.22	USD 116,079