TapewireFind a company

person · Reporting owner

Yeung William

Disclosed activity across 1 company

Tapewire entity
28010
SEC CIK
0001677876

Export transaction history ↓

Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Energy Recovery, Inc.ERII · Entity 5679Chief Legal OfficerJuly 27, 2026July 29, 2026

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

Energy Recovery, Inc.

Report date July 27, 2026 · Filed July 29, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect99,291 Ending reported balance After 2026-07-28 transaction · row 2
2 source rows · reconciled sequence

Row 1 · 2026-07-27 · Tax withholding · Disposed 2,828 · Balance 101,339

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

Row 2 · 2026-07-28 · Sale · Disposed 2,048 · Balance 99,291

F2: These transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

Common StockSEC Table I · non-derivativeIndirectSpouse5,568 Reported balance Holding disclosure · report date 2026-07-27 · row 3 Holding and transaction disclosures are not merged.
1 source row

Row 3 · Balance 5,568

Filing footnotes · ownership attribution and instrument terms

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

F2: These transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

Transaction history

JSON API
Reset

Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
July 28, 2026 Filed Jul 29, 2026 23:58 UTC Energy Recovery, Inc. ERII · Entity 5679 SaleCommon Stock 2,048 $8.56 $17,530.88
Disclosure

SEC source: 0001421517-26-000073 · wk-form4_1785369524.xml · nonDerivative · entry 2

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 99,291

F2 · shares: These transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

Read SEC document
July 27, 2026 Filed Jul 29, 2026 23:58 UTC Energy Recovery, Inc. ERII · Entity 5679 Tax withholdingCommon Stock 2,828 $8.42 $23,811.76
Disclosure

SEC source: 0001421517-26-000073 · wk-form4_1785369524.xml · nonDerivative · entry 1

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 101,339

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

Read SEC document
February 17, 2026 Filed Feb 19, 2026 21:55 UTC Energy Recovery, Inc. ERII · Entity 5679 GrantCommon Stock 25,959 $0.00 $0.00
Disclosure

SEC source: 0001677876-26-000006 · wk-form4_1771538147.xml · nonDerivative · entry 1

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 104,167

F1 · shares: These employee restricted stock units were granted on the transaction date. 25% of the restricted stock units will vest 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.

Read SEC document
February 06, 2026 Filed Feb 9, 2026 22:57 UTC Energy Recovery, Inc. ERII · Entity 5679 SaleCommon Stock 646 $15.14 $9,780.44
Disclosure

SEC source: 0001677876-26-000004 · wk-form4_1770677868.xml · nonDerivative · entry 2

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 78,208

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

Read SEC document
February 05, 2026 Filed Feb 9, 2026 22:57 UTC Energy Recovery, Inc. ERII · Entity 5679 SaleCommon Stock 890 $14.59 $12,985.10
Disclosure

SEC source: 0001677876-26-000004 · wk-form4_1770677868.xml · nonDerivative · entry 1

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 78,854

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

Read SEC document
February 02, 2026 Filed Feb 3, 2026 22:21 UTC Energy Recovery, Inc. ERII · Entity 5679 SaleCommon Stock 729 $14.46 $10,541.34
Disclosure

SEC source: 0001677876-26-000002 · wk-form4_1770157309.xml · nonDerivative · entry 4

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 79,744

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

Read SEC document
January 30, 2026 Filed Feb 3, 2026 22:21 UTC Energy Recovery, Inc. ERII · Entity 5679 Tax withholdingCommon Stock 8,622 $14.30 $123,294.60
Disclosure

SEC source: 0001677876-26-000002 · wk-form4_1770157309.xml · nonDerivative · entry 3

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 80,473

F2 · shares: Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).

Read SEC document
January 30, 2026 Filed Feb 3, 2026 22:21 UTC Energy Recovery, Inc. ERII · Entity 5679 Tax withholdingCommon Stock 1,003 $14.65 $14,693.95
Disclosure

SEC source: 0001677876-26-000002 · wk-form4_1770157309.xml · nonDerivative · entry 2

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 89,095

F2 · shares: Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).

Read SEC document
January 28, 2026 Filed Feb 3, 2026 22:21 UTC Energy Recovery, Inc. ERII · Entity 5679 SaleCommon Stock 7,271 $14.55 $105,793.05
Disclosure

SEC source: 0001677876-26-000002 · wk-form4_1770157309.xml · nonDerivative · entry 1

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 90,098

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

Read SEC document
October 24, 2025 Filed Oct 27, 2025 21:28 UTC Energy Recovery, Inc. ERII · Entity 5679 Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative 3,530 $7.50 Strike: $7.50 $26,475.00
Disclosure

SEC source: 0001677876-25-000011 · wk-form4_1761600530.xml · derivative · entry 10

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 14,120

Underlying: Common Stock · 3,530 shares

Expires 2028-02-01

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 employee stock option was granted on February 1, 2018. 25% of the shares fully vest on the 1st anniversary of the vesting start date; thereafter, the remaining 75%, vest 1/36th per month.

Read SEC document
October 24, 2025 Filed Oct 27, 2025 21:28 UTC Energy Recovery, Inc. ERII · Entity 5679 Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative 5,638 $10.19 Strike: $10.19 $57,451.22
Disclosure

SEC source: 0001677876-25-000011 · wk-form4_1761600530.xml · derivative · entry 9

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 16,229

Underlying: Common Stock · 5,638 shares

Expires 2027-02-02

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: 25% of these options fully vest on the 1st anniversary of the vesting start date of 02/02/2017; thereafter, the remaining 75% vest 1/36th per month.

Read SEC document
October 24, 2025 Filed Oct 27, 2025 21:28 UTC Energy Recovery, Inc. ERII · Entity 5679 SaleCommon Stock 3,530 $18.00 $63,540.00
Disclosure

SEC source: 0001677876-25-000011 · wk-form4_1761600530.xml · nonDerivative · entry 6

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 97,369

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

Read SEC document
October 24, 2025 Filed Oct 27, 2025 21:28 UTC Energy Recovery, Inc. ERII · Entity 5679 Exercise / conversionCommon Stock 3,530 $7.50 $26,475.00
Disclosure

SEC source: 0001677876-25-000011 · wk-form4_1761600530.xml · nonDerivative · entry 5

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 100,899

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.

Read SEC document
October 24, 2025 Filed Oct 27, 2025 21:28 UTC Energy Recovery, Inc. ERII · Entity 5679 SaleCommon Stock 5,638 $18.00 $101,484.00
Disclosure

SEC source: 0001677876-25-000011 · wk-form4_1761600530.xml · nonDerivative · entry 4

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 97,369

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

Read SEC document
October 24, 2025 Filed Oct 27, 2025 21:28 UTC Energy Recovery, Inc. ERII · Entity 5679 Exercise / conversionCommon Stock 5,638 $10.19 $57,451.22
Disclosure

SEC source: 0001677876-25-000011 · wk-form4_1761600530.xml · nonDerivative · entry 3

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 103,007

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.

Read SEC document
October 23, 2025 Filed Oct 27, 2025 21:28 UTC Energy Recovery, Inc. ERII · Entity 5679 Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative 3,530 $7.50 Strike: $7.50 $26,475.00
Disclosure

SEC source: 0001677876-25-000011 · wk-form4_1761600530.xml · derivative · entry 8

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 17,650

Underlying: Common Stock · 3,530 shares

Expires 2028-02-01

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 employee stock option was granted on February 1, 2018. 25% of the shares fully vest on the 1st anniversary of the vesting start date; thereafter, the remaining 75%, vest 1/36th per month.

Read SEC document
October 23, 2025 Filed Oct 27, 2025 21:28 UTC Energy Recovery, Inc. ERII · Entity 5679 SaleCommon Stock 3,530 $17.50 $61,775.00
Disclosure

SEC source: 0001677876-25-000011 · wk-form4_1761600530.xml · nonDerivative · entry 2

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 97,369

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

Read SEC document
October 23, 2025 Filed Oct 27, 2025 21:28 UTC Energy Recovery, Inc. ERII · Entity 5679 Exercise / conversionCommon Stock 3,530 $7.50 $26,475.00
Disclosure

SEC source: 0001677876-25-000011 · wk-form4_1761600530.xml · nonDerivative · entry 1

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 100,899

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.

Read SEC document
October 20, 2025 Filed Oct 22, 2025 22:09 UTC Energy Recovery, Inc. ERII · Entity 5679 Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative 3,530 $7.50 Strike: $7.50 $26,475.00
Disclosure

SEC source: 0001677876-25-000009 · wk-form4_1761170964.xml · derivative · entry 4

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 21,180

Underlying: Common Stock · 3,530 shares

Expires 2028-02-01

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 employee stock option was granted on February 1, 2018. 25% of the shares fully vest on the 1st anniversary of the vesting start date; thereafter, the remaining 75%, vest 1/36th per month.

Read SEC document
October 20, 2025 Filed Oct 22, 2025 22:09 UTC Energy Recovery, Inc. ERII · Entity 5679 SaleCommon Stock 3,530 $17.00 $60,010.00
Disclosure

SEC source: 0001677876-25-000009 · wk-form4_1761170964.xml · nonDerivative · entry 2

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 97,369

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

Read SEC document
October 20, 2025 Filed Oct 22, 2025 22:09 UTC Energy Recovery, Inc. ERII · Entity 5679 Exercise / conversionCommon Stock 3,530 $7.50 $26,475.00
Disclosure

SEC source: 0001677876-25-000009 · wk-form4_1761170964.xml · nonDerivative · entry 1

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 100,899

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.

Read SEC document
October 16, 2025 Filed Oct 17, 2025 20:40 UTC Energy Recovery, Inc. ERII · Entity 5679 Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative 3,530 $7.50 Strike: $7.50 $26,475.00
Disclosure

SEC source: 0001677876-25-000007 · wk-form4_1760733642.xml · derivative · entry 4

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 24,710

Underlying: Common Stock · 3,530 shares

Expires 2028-02-01

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 employee stock option was granted on February 1, 2018. 25% of the shares fully vest on the 1st anniversary of the vesting start date; thereafter, the remaining 75%, vest 1/36th per month.

Read SEC document
October 16, 2025 Filed Oct 17, 2025 20:40 UTC Energy Recovery, Inc. ERII · Entity 5679 SaleCommon Stock 3,530 $16.50 $58,245.00
Disclosure

SEC source: 0001677876-25-000007 · wk-form4_1760733642.xml · nonDerivative · entry 2

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 97,369

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

Read SEC document
October 16, 2025 Filed Oct 17, 2025 20:40 UTC Energy Recovery, Inc. ERII · Entity 5679 Exercise / conversionCommon Stock 3,530 $7.50 $26,475.00
Disclosure

SEC source: 0001677876-25-000007 · wk-form4_1760733642.xml · nonDerivative · entry 1

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 100,899

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.

Read SEC document
October 03, 2025 Filed Oct 7, 2025 21:11 UTC Energy Recovery, Inc. ERII · Entity 5679 Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative 2,529 $7.50 Strike: $7.50 $18,967.50
Disclosure

SEC source: 0001677876-25-000005 · wk-form4_1759871464.xml · derivative · entry 7

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 28,240

Underlying: Common Stock · 2,529 shares

Expires 2028-02-01

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 employee stock option was granted on February 1, 2018. 25% of the shares fully vest on the 1st anniversary of the vesting start date; thereafter, the remaining 75%, vest 1/36th per month.

Read SEC document
October 03, 2025 Filed Oct 7, 2025 21:11 UTC Energy Recovery, Inc. ERII · Entity 5679 Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative 1,038 $7.50 Strike: $7.50 $7,785.00
Disclosure

SEC source: 0001677876-25-000005 · wk-form4_1759871464.xml · derivative · entry 6

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 30,769

Underlying: Common Stock · 1,038 shares

Expires 2028-02-01

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 employee stock option was granted on February 1, 2018. 25% of the shares fully vest on the 1st anniversary of the vesting start date; thereafter, the remaining 75%, vest 1/36th per month.

Read SEC document
October 03, 2025 Filed Oct 7, 2025 21:11 UTC Energy Recovery, Inc. ERII · Entity 5679 SaleCommon Stock 2,529 $16.00 $40,464.00
Disclosure

SEC source: 0001677876-25-000005 · wk-form4_1759871464.xml · nonDerivative · entry 4

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 97,369

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

Read SEC document
October 03, 2025 Filed Oct 7, 2025 21:11 UTC Energy Recovery, Inc. ERII · Entity 5679 Exercise / conversionCommon Stock 2,529 $7.50 $18,967.50
Disclosure

SEC source: 0001677876-25-000005 · wk-form4_1759871464.xml · nonDerivative · entry 3

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 99,898

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.

Read SEC document
October 03, 2025 Filed Oct 7, 2025 21:11 UTC Energy Recovery, Inc. ERII · Entity 5679 SaleCommon Stock 1,038 $16.00 $16,608.00
Disclosure

SEC source: 0001677876-25-000005 · wk-form4_1759871464.xml · nonDerivative · entry 2

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 97,369

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

Read SEC document
October 03, 2025 Filed Oct 7, 2025 21:11 UTC Energy Recovery, Inc. ERII · Entity 5679 Exercise / conversionCommon Stock 1,038 $7.50 $7,785.00
Disclosure

SEC source: 0001677876-25-000005 · wk-form4_1759871464.xml · nonDerivative · entry 1

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 98,407

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.

Read SEC document
September 18, 2025 Filed Sep 22, 2025 23:18 UTC Energy Recovery, Inc. ERII · Entity 5679 Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative 15,454 $8.95 Strike: $8.95 $138,313.30
Disclosure

SEC source: 0001677876-25-000003 · wk-form4_1758583100.xml · derivative · entry 4

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 15,454 shares

Expires 2026-06-19

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: 25% of the shares became vested and exercisable on the 1st anniversary of the vesting start date of 06/20/2016; Thereafter, the remaining 75%, will vest and become exercisable 1/36th per month. The options become fully vested and exercisable on 06/20/2020.

Read SEC document
September 18, 2025 Filed Sep 22, 2025 23:18 UTC Energy Recovery, Inc. ERII · Entity 5679 SaleCommon Stock 15,454 $15.09 $233,139.04
Disclosure

SEC source: 0001677876-25-000003 · wk-form4_1758583100.xml · nonDerivative · entry 2

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 97,369

F1 · shares: 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 amount represents the weighted average sales price of multiple trades ranging from $15 to $15.21 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.

Read SEC document
September 18, 2025 Filed Sep 22, 2025 23:18 UTC Energy Recovery, Inc. ERII · Entity 5679 Exercise / conversionCommon Stock 15,454 $8.95 $138,313.30
Disclosure

SEC source: 0001677876-25-000003 · wk-form4_1758583100.xml · nonDerivative · entry 1

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 112,823

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.

Read SEC document
September 11, 2025 Filed Sep 15, 2025 21:00 UTC Energy Recovery, Inc. ERII · Entity 5679 Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative 30,877 $8.95 Strike: $8.95 $276,349.15
Disclosure

SEC source: 0001421517-25-000122 · wk-form4_1757970044.xml · derivative · entry 3

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 15,454

Underlying: Common Stock · 30,877 shares

Expires 2026-06-19

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: 25% of the shares became vested and exercisable on the 1st anniversary of the vesting start date of 06/20/2016; Thereafter, the remaining 75%, will vest and become exercisable 1/36th per month. The options become fully vested and exercisable on 06/20/2020.

Read SEC document
September 11, 2025 Filed Sep 15, 2025 21:00 UTC Energy Recovery, Inc. ERII · Entity 5679 SaleCommon Stock 33,554 $14.51 $486,868.54
Disclosure

SEC source: 0001421517-25-000122 · wk-form4_1757970044.xml · nonDerivative · entry 2

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 97,369

F1 · price: This amount represents the weighted average sales price of multiple trades ranging from $14.40 to $14.65 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.

F2 · balance_after: These transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

Read SEC document
September 11, 2025 Filed Sep 15, 2025 21:00 UTC Energy Recovery, Inc. ERII · Entity 5679 Exercise / conversionCommon Stock 30,877 $8.95 $276,349.15
Disclosure

SEC source: 0001421517-25-000122 · wk-form4_1757970044.xml · nonDerivative · entry 1

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 130,923

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.

Read SEC document
July 25, 2025 Filed Jul 29, 2025 20:21 UTC Energy Recovery, Inc. ERII · Entity 5679 Tax withholdingCommon Stock 1,989 $13.88 $27,607.32
Disclosure

SEC source: 0001421517-25-000106 · wk-form4_1753820454.xml · nonDerivative · entry 1

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 100,046

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

Read SEC document
March 10, 2025 Filed Mar 12, 2025 20:59 UTC Energy Recovery, Inc. ERII · Entity 5679 Tax withholdingCommon Stock 944 $16.37 $15,453.28
Disclosure

SEC source: 0001421517-25-000052 · wk-form4_1741813182.xml · nonDerivative · entry 1

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 102,035

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

Read SEC document
February 03, 2025 Filed Feb 5, 2025 23:40 UTC Energy Recovery, Inc. ERII · Entity 5679 Tax withholdingCommon Stock 882 $14.34 $12,647.88
Disclosure

SEC source: 0001421517-25-000026 · wk-form4_1738798846.xml · nonDerivative · entry 1

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 102,979

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

Read SEC document
January 31, 2025 Filed Feb 3, 2025 23:22 UTC Energy Recovery, Inc. ERII · Entity 5679 Tax withholdingCommon Stock 627 $14.56 $9,129.12
Disclosure

SEC source: 0001421517-25-000022 · wk-form4_1738624936.xml · nonDerivative · entry 2

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 103,861

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

Read SEC document
January 30, 2025 Filed Feb 3, 2025 23:22 UTC Energy Recovery, Inc. ERII · Entity 5679 Tax withholdingCommon Stock 698 $14.33 $10,002.34
Disclosure

SEC source: 0001421517-25-000022 · wk-form4_1738624936.xml · nonDerivative · entry 1

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 104,488

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

Read SEC document
January 27, 2025 Filed Jan 29, 2025 22:43 UTC Energy Recovery, Inc. ERII · Entity 5679 Tax withholdingCommon Stock 4,061 $14.40 $58,478.40
Disclosure

SEC source: 0001421517-25-000014 · wk-form4_1738190618.xml · nonDerivative · entry 1

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 105,186

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

Read SEC document
January 23, 2025 Filed Jan 27, 2025 23:06 UTC Energy Recovery, Inc. ERII · Entity 5679 GrantCommon Stock 23,956 $0.00 $0.00
Disclosure

SEC source: 0001421517-25-000008 · wk-form4_1738019172.xml · nonDerivative · entry 1

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 109,247

F1 · shares: These employee restricted stock units were granted on the transaction date. 25% of the restricted stock units will vest 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.

Read SEC document
July 29, 2024 Filed Jul 30, 2024 20:08 UTC Energy Recovery, Inc. ERII · Entity 5679 SaleCommon Stock 2,012 $14.63 $29,433.55
Disclosure

SEC source: 0001421517-24-000155 · wk-form4_1722370087.xml · nonDerivative · entry 1

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 85,291

F1 · shares: 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 $14.35 to $15.21 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.

Read SEC document
March 11, 2024 Filed Mar 13, 2024 21:24 UTC Energy Recovery, Inc. ERII · Entity 5679 SaleCommon Stock 978 $14.98 $14,652.40
Disclosure

SEC source: 0001421517-24-000067 · wk-form4_1710365064.xml · nonDerivative · entry 1

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 87,303

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

F2 · price: This figure is the weighted average sales price of multiple trades ranging from $14.88 to $15.08 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.

Read SEC document
February 05, 2024 Filed Feb 7, 2024 22:06 UTC Energy Recovery, Inc. ERII · Entity 5679 SaleCommon Stock 1,013 $14.89 $15,083.57
Disclosure

SEC source: 0001421517-24-000039 · wk-form4_1707343594.xml · nonDerivative · entry 1

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 88,281

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

F2 · price: This figure is the weighted average sales price of multiple trades ranging from $14.79 to $15.10 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.

Read SEC document
February 02, 2024 Filed Feb 5, 2024 22:59 UTC Energy Recovery, Inc. ERII · Entity 5679 SaleCommon Stock 1,400 $15.30 $21,420.00
Disclosure

SEC source: 0001421517-24-000033 · wk-form4_1707173942.xml · nonDerivative · entry 2

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 89,294

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

F3 · price: This figure is the weighted average sales price of multiple trades ranging from $15.07 to $15.525 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.

Read SEC document
February 01, 2024 Filed Feb 5, 2024 22:59 UTC Energy Recovery, Inc. ERII · Entity 5679 SaleCommon Stock 733 $15.64 $11,464.12
Disclosure

SEC source: 0001421517-24-000033 · wk-form4_1707173942.xml · nonDerivative · entry 1

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 90,694

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

F2 · price: This figure is the weighted average sales price of multiple trades ranging from $15.45 to $15.83 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.

Read SEC document
January 30, 2024 Filed Feb 1, 2024 21:11 UTC Energy Recovery, Inc. ERII · Entity 5679 SaleCommon Stock 823 $15.91 $13,097.22
Disclosure

SEC source: 0001421517-24-000023 · wk-form4_1706821897.xml · nonDerivative · entry 1

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 91,427

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

F2 · price: This figure is the weighted average sales price of multiple trades ranging from $15.81 to $16.07 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.

Read SEC document
January 25, 2024 Filed Jan 29, 2024 22:50 UTC Energy Recovery, Inc. ERII · Entity 5679 GrantCommon Stock 39,542 $0.00 $0.00
Disclosure

SEC source: 0001421517-24-000009 · wk-form4_1706568602.xml · nonDerivative · entry 1

Yeung William · CIK 0001677876 · Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 92,250

F1 · shares: These employee restricted stock units were granted on the transaction date. 25% of the restricted stock units will vest 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.

Read SEC document

Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.