ERII

SEC source: 0001421517-23-000056 · wf-form4_168073118888645.xml · nonDerivative · entry 1

Hanstveit Arve · CIK 0001430122 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 868,352

F1 · security: These transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F2 · price: Represents the limit order stock price of the shares sold. The reporting person undertakes to provide the SEC Staff, Energy Recovery, Inc. or a shareholder of Energy Recovery, Inc. full information about the number of shares sold upon request.

SEC source: 0001421517-23-000052 · wf-form4_167875014881203.xml · nonDerivative · entry 1

Ballard Joshua · CIK 0001751098 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,621

F1 · security: Payment of tax obligation by selling securities incident to the vesting of securities in accordance with Rule 16b-3(e).

F2 · price: Represents the weighted average stock price of the shares sold to cover tax obligation for restricted stock unit award vesting. The weighted average sales price includes multiple trades ranging from $23.74 to $24.14 per share. The reporting person undertakes to provide the SEC Staff, Energy Recovery, Inc. or a shareholder of Energy Recovery, Inc. full information about the number of shares sold at each separate price upon request.

SEC source: 0001421517-23-000053 · wf-form4_167875016512496.xml · nonDerivative · entry 1

Clemente Rodney · CIK 0001668422 · SVP, Water

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 32,781

F1 · security: Payment of tax obligation by selling securities incident to the vesting of securities in accordance with Rule 16b-3(e).

F2 · price: Represents the weighted average stock price of the shares sold to cover tax obligation for restricted stock unit award vesting. The weighted average sales price includes multiple trades ranging from $23.74 to $24.14 per share. The reporting person undertakes to provide the SEC Staff, Energy Recovery, Inc. or a shareholder of Energy Recovery, Inc. full information about the number of shares sold at each separate price upon request.

SEC source: 0001421517-23-000054 · wf-form4_167875018166784.xml · nonDerivative · entry 1

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 76,648

F1 · security: Payment of tax obligation by selling securities incident to the vesting of securities in accordance with Rule 16b-3(e).

F2 · price: Represents the weighted average stock price of the shares sold to cover tax obligation for restricted stock unit award vesting. The weighted average sales price includes multiple trades ranging from $23.74 to $24.14 per share. The reporting person undertakes to provide the SEC Staff, Energy Recovery, Inc. or a shareholder of Energy Recovery, Inc. full information about the number of shares sold at each separate price upon request.

SEC source: 0001421517-23-000048 · wf-form4_167813727270413.xml · nonDerivative · entry 1

Clemente Rodney · CIK 0001668422 · SVP, Water

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 33,549

F1 · security: These transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F2 · price: This figure is the weighted average sales price of multiple trades ranging from $22.31 to $22.35 per share. The reporting person undertakes to provide the SEC Staff, Energy Recovery, Inc. or a shareholder of Energy Recovery, Inc. full information about the number of shares sold at each separate price upon request.

SEC source: 0001421517-23-000031 · wf-form4_167581270585844.xml · nonDerivative · entry 1

Ballard Joshua · CIK 0001751098 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,504

F1 · security: These transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

SEC source: 0001421517-23-000028 · wf-form4_167581264385193.xml · nonDerivative · entry 1

Clemente Rodney · CIK 0001668422 · SVP, Water

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 55,644

F1 · security: Payment of tax obligation by selling securities incident to the vesting of securities in accordance with Rule 16b-3(e).

F2 · price: Represents the weighted average stock price of the shares sold to cover tax obligation for restricted stock unit award vesting. The weighted average sales price includes multiple trades ranging from $22.51 to $22.89 per share. The Reporting Person undertakes to provide the SEC Staff, Energy Recovery, Inc. or a shareholder of Energy Recovery, Inc. full information about the number of shares sold at each separate price upon request.

SEC source: 0001421517-23-000030 · wf-form4_167581268734762.xml · nonDerivative · entry 1

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 77,530

F1 · security: Payment of tax obligation by selling securities incident to the vesting of securities in accordance with Rule 16b-3(e).

F2 · price: Represents the weighted average stock price of the shares sold to cover tax obligation for restricted stock unit award vesting. The weighted average sales price includes multiple trades ranging from $21.62 to $22.13 per share. The Reporting Person undertakes to provide the SEC Staff, Energy Recovery, Inc. or a shareholder of Energy Recovery, Inc. full information about the number of shares sold at each separate price upon request.

SEC source: 0001421517-23-000029 · wf-form4_167581266741301.xml · nonDerivative · entry 1

Ghasripoor Farshad · CIK 0001723522 · Chief Technology Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 62,873

F1 · security: Payment of tax obligation by selling securities incident to the vesting of securities in accordance with Rule 16b-3(e).

F2 · price: Represents the weighted average stock price of the shares sold to cover tax obligation for restricted stock unit award vesting. The weighted average sales price includes multiple trades ranging from $22.51 to $22.89 per share. The Reporting Person undertakes to provide the SEC Staff, Energy Recovery, Inc. or a shareholder of Energy Recovery, Inc. full information about the number of shares sold at each separate price upon request.

SEC source: 0001421517-23-000021 · wf-form4_167545915112103.xml · nonDerivative · entry 3

Ballard Joshua · CIK 0001751098 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 28,712

F3 · security: Payment of tax obligation by selling securities incident to the vesting of securities in accordance with Rule 16b-3(e).

F4 · price: Represents the weighted average stock price of the shares sold to cover tax obligation for restricted stock unit award vesting. The weighted average sales price includes multiple trades ranging from $22.38 to $22.77 per share. The Reporting Person undertakes to provide the SEC Staff, Energy Recovery, Inc. or a shareholder of Energy Recovery, Inc. full information about the number of shares sold at each separate price upon request.

SEC source: 0001421517-23-000023 · wf-form4_167545921297774.xml · nonDerivative · entry 2

Clemente Rodney · CIK 0001668422 · SVP, Water

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 56,569

F1 · security: Payment of tax obligation by selling securities incident to the vesting of securities in accordance with Rule 16b-3(e).

F3 · price: Represents the weighted average stock price of the shares sold to cover tax obligation for restricted stock unit award vesting. The weighted average sales price includes multiple trades ranging from $22.38 to $22.77 per share. The Reporting Person undertakes to provide the SEC Staff, Energy Recovery, Inc. or a shareholder of Energy Recovery, Inc. full information about the number of shares sold at each separate price upon request.

SEC source: 0001421517-23-000022 · wf-form4_167545919089133.xml · nonDerivative · entry 2

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 78,366

F1 · security: Payment of tax obligation by selling securities incident to the vesting of securities in accordance with Rule 16b-3(e).

F3 · price: Represents the weighted average stock price of the shares sold to cover tax obligation for restricted stock unit award vesting. The weighted average sales price includes multiple trades ranging from $22.38 to $22.77 per share. The Reporting Person undertakes to provide the SEC Staff, Energy Recovery, Inc. or a shareholder of Energy Recovery, Inc. full information about the number of shares sold at each separate price upon request.

SEC source: 0001421517-23-000020 · wf-form4_167545911187857.xml · nonDerivative · entry 2

Ghasripoor Farshad · CIK 0001723522 · Chief Technology Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 63,860

F1 · security: Payment of tax obligation by selling securities incident to the vesting of securities in accordance with Rule 16b-3(e).

F3 · price: Represents the weighted average stock price of the shares sold to cover tax obligation for restricted stock unit award vesting. The weighted average sales price includes multiple trades ranging from $22.38 to $22.77 per share. The Reporting Person undertakes to provide the SEC Staff, Energy Recovery, Inc. or a shareholder of Energy Recovery, Inc. full information about the number of shares sold at each separate price upon request.

SEC source: 0001421517-23-000021 · wf-form4_167545915112103.xml · derivative · entry 5

Ballard Joshua · CIK 0001751098 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 20,737

Underlying: Common Stock · 15,000 shares

Expires 2029-01-31

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · security: These transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F5 · security: This employee stock option was granted on January 31, 2019 and the shares exercised was fully vested by the transaction date.

F5 · derivative.exercise_date: This employee stock option was granted on January 31, 2019 and the shares exercised was fully vested by the transaction date.

SEC source: 0001421517-23-000021 · wf-form4_167545915112103.xml · nonDerivative · entry 2

Ballard Joshua · CIK 0001751098 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 30,850

F1 · security: These transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F2 · price: This figure is the weighted average sales price of multiple trades ranging from $21.40 to $22.50 per share. The Reporting Person undertakes to provide the SEC Staff, Energy Recovery, Inc. or a shareholder of Energy Recovery, Inc. full information about the number of shares sold at each separate price upon request.

SEC source: 0001421517-23-000021 · wf-form4_167545915112103.xml · nonDerivative · entry 1

Ballard Joshua · CIK 0001751098 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 45,850

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · security: These transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

SEC source: 0001421517-23-000023 · wf-form4_167545921297774.xml · nonDerivative · entry 1

Clemente Rodney · CIK 0001668422 · SVP, Water

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 59,596

F1 · security: Payment of tax obligation by selling securities incident to the vesting of securities in accordance with Rule 16b-3(e).

F2 · price: Represents the weighted average stock price of the shares sold to cover tax obligation for restricted stock unit award vesting. The weighted average sales price includes multiple trades ranging from $21.62 to $22.13 per share. The Reporting Person undertakes to provide the SEC Staff, Energy Recovery, Inc. or a shareholder of Energy Recovery, Inc. full information about the number of shares sold at each separate price upon request.

SEC source: 0001421517-23-000022 · wf-form4_167545919089133.xml · nonDerivative · entry 1

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 81,279

F1 · security: Payment of tax obligation by selling securities incident to the vesting of securities in accordance with Rule 16b-3(e).

F2 · price: Represents the weighted average stock price of the shares sold to cover tax obligation for restricted stock unit award vesting. The weighted average sales price includes multiple trades ranging from $21.62 to $22.13 per share. The Reporting Person undertakes to provide the SEC Staff, Energy Recovery, Inc. or a shareholder of Energy Recovery, Inc. full information about the number of shares sold at each separate price upon request.

SEC source: 0001421517-23-000020 · wf-form4_167545911187857.xml · nonDerivative · entry 1

Ghasripoor Farshad · CIK 0001723522 · Chief Technology Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 67,250

F1 · security: Payment of tax obligation by selling securities incident to the vesting of securities in accordance with Rule 16b-3(e).

F2 · price: Represents the weighted average stock price of the shares sold to cover tax obligation for restricted stock unit award vesting. The weighted average sales price includes multiple trades ranging from $21.62 to $22.13 per share. The Reporting Person undertakes to provide the SEC Staff, Energy Recovery, Inc. or a shareholder of Energy Recovery, Inc. full information about the number of shares sold at each separate price upon request.

SEC source: 0001421517-23-000012 · wf-form4_167529430770163.xml · nonDerivative · entry 1

Ballard Joshua · CIK 0001751098 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 30,850

F1 · security: These employee restricted stock units were granted on the transaction date. 25% of the restricted stock units will vests on the first four anniversaries of the grant date.

F2 · shares: Each restricted stock unit represents the right to receive, at settlement, one (1) share of the Company's common stock.

SEC source: 0001421517-23-000015 · wf-form4_167529437552029.xml · nonDerivative · entry 1

Clemente Rodney · CIK 0001668422 · SVP, Water

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 60,400

F1 · security: These employee restricted stock units were granted on the transaction date. 25% of the restricted stock units will vests on the first four anniversaries of the grant date.

F2 · shares: Each restricted stock unit represents the right to receive, at settlement, one (1) share of the Company's common stock.

SEC source: 0001421517-23-000014 · wf-form4_167529435431239.xml · nonDerivative · entry 1

Ghasripoor Farshad · CIK 0001723522 · Chief Technology Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 68,110

F1 · security: These employee restricted stock units were granted on the transaction date. 25% of the restricted stock units will vests on the first four anniversaries of the grant date.

F2 · shares: Each restricted stock unit represents the right to receive, at settlement, one (1) share of the Company's common stock.

SEC source: 0001421517-23-000013 · wf-form4_167529432949165.xml · nonDerivative · entry 1

MAO ROBERT YU LANG · CIK 0001232218 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 29,248

F1 · security: These employee restricted stock units were granted on the transaction date. 25% of the restricted stock units will vests on the first four anniversaries of the grant date.

F2 · shares: Each restricted stock unit represents the right to receive, at settlement, one (1) share of the Company's common stock.

SEC source: 0001421517-23-000011 · wf-form4_167529428182878.xml · nonDerivative · entry 1

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 82,073

F1 · security: These employee restricted stock units were granted on the transaction date. 25% of the restricted stock units will vests on the first four anniversaries of the grant date.

F2 · shares: Each restricted stock unit represents the right to receive, at settlement, one (1) share of the Company's common stock.

SEC source: 0001421517-22-000153 · wf-form4_166880604451796.xml · derivative · entry 4

Hanstveit Arve · CIK 0001430122 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 17,236 shares

Expires 2023-09-03

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_date: The shares are fully vested and exercisable.

SEC source: 0001421517-22-000153 · wf-form4_166880604451796.xml · nonDerivative · entry 2

Hanstveit Arve · CIK 0001430122 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 884,352

F1 · price: This figure is the weighted average sales price of multiple trades ranging from $20.80 to $21.06 per share. The Reporting Person undertakes to provide the SEC Staff, Energy Recovery, Inc. or a shareholder of Energy Recovery, Inc. full information about the number of shares sold at each separate price upon request.

SEC source: 0001421517-22-000153 · wf-form4_166880604451796.xml · nonDerivative · entry 1

Hanstveit Arve · CIK 0001430122 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 901,588

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001421517-22-000137 · wf-form4_166335956804648.xml · derivative · entry 3

Foda Sherif · CIK 0001580690 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 15,879 shares

Expires 2028-06-14

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_date: This stock option was granted on June 14, 2018. All the options are fully vested and exercisable on June 13, 2019.

SEC source: 0001421517-22-000137 · wf-form4_166335956804648.xml · nonDerivative · entry 2

Foda Sherif · CIK 0001580690 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,619

F1 · price: This figure is the weighted average sales price of multiple trades ranging from $25.50 to $25.51 per share. The Reporting Person undertakes to provide the SEC Staff, Energy Recovery, Inc. or a shareholder of Energy Recovery, Inc. full information about the number of shares sold at each separate price upon request.

SEC source: 0001421517-22-000137 · wf-form4_166335956804648.xml · nonDerivative · entry 1

Foda Sherif · CIK 0001580690 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,498

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001421517-22-000126 · wf-form4_166025515222146.xml · derivative · entry 7

MAO ROBERT YU LANG · CIK 0001232218 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 15,236 shares

Expires 2023-09-03

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_date: This stock option was granted on 9/3/2013. All the options are fully vested and exercisable on the date of the 2014 Shareholder Meeting.

SEC source: 0001421517-22-000126 · wf-form4_166025515222146.xml · nonDerivative · entry 3

MAO ROBERT YU LANG · CIK 0001232218 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,236

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001421517-22-000126 · wf-form4_166025515222146.xml · derivative · entry 6

MAO ROBERT YU LANG · CIK 0001232218 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,236

Underlying: Common Stock · 2,000 shares

Expires 2023-09-03

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_date: This stock option was granted on 9/3/2013. All the options are fully vested and exercisable on the date of the 2014 Shareholder Meeting.

SEC source: 0001421517-22-000126 · wf-form4_166025515222146.xml · nonDerivative · entry 2

MAO ROBERT YU LANG · CIK 0001232218 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

SEC source: 0001421517-22-000126 · wf-form4_166025515222146.xml · nonDerivative · entry 1

MAO ROBERT YU LANG · CIK 0001232218 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,000

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001421517-22-000124 · wf-form4_166016218723156.xml · nonDerivative · entry 1

POLLINA LISA A · CIK 0001658268 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,850

SEC source: 0001421517-22-000104 · wf-form4_165549679444558.xml · nonDerivative · entry 1

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · Spouse

Disclosed balance after: 5,568

SEC source: 0001421517-22-000101 · wf-form4_165515158216463.xml · nonDerivative · entry 1

POLLINA LISA A · CIK 0001658268 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,550

F1 · shares: Each restricted stock unit represents the right to receive, at settlement, one (1) share of the Company's common stock.

F2 · shares: The restricted stock unit will fully vest on the 2023 Annual Meeting date, anticipated to be on or about June 8, 2023.

SEC source: 0001421517-22-000100 · wf-form4_165515156508110.xml · nonDerivative · entry 1

Hanstveit Arve · CIK 0001430122 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 884,352

F1 · shares: Each restricted stock unit represents the right to receive, at settlement, one (1) share of the Company's common stock.

F2 · shares: The restricted stock unit will fully vest on the 2023 Annual Meeting date, anticipated to be on or about June 8, 2023.

SEC source: 0001421517-22-000102 · wf-form4_165515160402279.xml · nonDerivative · entry 1

Chow Joan Kai · CIK 0001390709 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,154

F1 · shares: Each restricted stock unit represents the right to receive, at settlement, one (1) share of the Company's common stock.

F2 · shares: The restricted stock unit will fully vest on the 2023 Annual Meeting date, anticipated to be on or about June 8, 2023.

SEC source: 0001421517-22-000099 · wf-form4_165515154694460.xml · nonDerivative · entry 1

BUEHLER ALEXANDER J · CIK 0001397838 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 19,619

F1 · shares: Each restricted stock unit represents the right to receive, at settlement, one (1) share of the Company's common stock.

F2 · shares: The restricted stock unit will fully vest on the 2023 Annual Meeting date, anticipated to be on or about June 8, 2023.

SEC source: 0001421517-22-000098 · wf-form4_165515150586918.xml · nonDerivative · entry 1

TONDREAU PAMELA L. · CIK 0001722237 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,619

F1 · shares: Each restricted stock unit represents the right to receive, at settlement, one (1) share of the Company's common stock.

F2 · shares: The restricted stock unit will fully vest on the 2023 Annual Meeting date, anticipated to be on or about June 8, 2023.

SEC source: 0001421517-22-000097 · wf-form4_165515148849640.xml · nonDerivative · entry 1

Foda Sherif · CIK 0001580690 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,619

F1 · shares: Each restricted stock unit represents the right to receive, at settlement, one (1) share of the Company's common stock.

F2 · shares: The restricted stock unit will fully vest on the 2023 Annual Meeting date, anticipated to be on or about June 8, 2023.

SEC source: 0001421517-22-000084 · wf-form4_165455332763268.xml · derivative · entry 5

BUEHLER ALEXANDER J · CIK 0001397838 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 19,841

Underlying: Common Stock · 33,551 shares

Expires 2025-06-23

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_date: The shares were fully vested on June 17, 2016.

SEC source: 0001421517-22-000084 · wf-form4_165455332763268.xml · derivative · entry 4

BUEHLER ALEXANDER J · CIK 0001397838 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 16,449 shares

Expires 2025-02-06

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_date: The shares were fully vested on June 20, 2015.

SEC source: 0001421517-22-000084 · wf-form4_165455332763268.xml · nonDerivative · entry 3

BUEHLER ALEXANDER J · CIK 0001397838 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,812

F1 · price: This figure is the weighted average sales price of multiple trades ranging from $21.270 to $21.485 per share. The Reporting Person undertakes to provide the SEC Staff, Energy Recovery, Inc. or a shareholder of Energy Recovery, Inc. full information about the number of shares sold at each separate price upon request.

SEC source: 0001421517-22-000084 · wf-form4_165455332763268.xml · nonDerivative · entry 2

BUEHLER ALEXANDER J · CIK 0001397838 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 64,812

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001421517-22-000084 · wf-form4_165455332763268.xml · nonDerivative · entry 1

BUEHLER ALEXANDER J · CIK 0001397838 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 31,261

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001421517-22-000047 · wf-form4_164738428659882.xml · nonDerivative · entry 1

Ballard Joshua · CIK 0001751098 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 22,677

F1 · security: The restricted stock units were granted on the transaction date. 33.3% of the restricted stock units will vest on each of the first three anniversaries of the grant date.

F2 · shares: Each restricted stock unit represents the right to receive, at settlement, one (1) share of the Company's Common Stock.

SEC source: 0001421517-22-000046 · wf-form4_164738426405903.xml · nonDerivative · entry 1

Clemente Rodney · CIK 0001668422 · SVP, Water

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 52,227

F1 · security: The restricted stock units were granted on the transaction date. 33.3% of the restricted stock units will vest on each of the first three anniversaries of the grant date.

F2 · shares: Each restricted stock unit represents the right to receive, at settlement, one (1) share of the Company's Common Stock.