Results of Operations and Financial Condition On November 4, 2026, Energy Recovery, Inc. (the “Company”) issued an earnings press release announcing its financial results for the third quarter and nine months ended September 30, 2026. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference in its entirety. The information in this report (including Exhibit 99.1) is being furnished pursuant to

Results of Operations and Financial Condition On August 5, 2026, Energy Recovery, Inc. (the “Company”) issued an earnings press release announcing its financial results for the second quarter and six months ended June 30, 2026. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference in its entirety. The information in this report (including Exhibit 99.1) is being furnished pursuant to

Director — John Mitchell: Mr. John Mitchell was appointed to the Board of Directors.

Interim President and Chief Executive Officer — Alex Buehler: Mr. Alex Buehler was appointed as the Interim President and Chief Executive Officer with a defined compensation package.

President, Chief Executive Officer and Director — David Moon: Mr. David Moon retired from all positions within the Company, including as President, Chief Executive Officer and as a member of the Board.

Other Events On May 6, 2026 , the Company announced that the Board of the Company authorized the Company to repurchase up to $25.0 million of outstanding shares of its common stock, $0.001 par value per share, pursuant to a new share repurchase program (the “May 2026 Authorization”). Under the May 2026 Authorization, the Company may repurchase shares through open market trades, block trades and/or privately negotiated transactions, in compliance with applicable state and federal securities la…

Results of Operations and Financial Condition On May 6, 2026, Energy Recovery, Inc. (the “Company”) issued an earnings press release announcing its financial results for the first quarter ended March 31, 2026. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference in its entirety. The information in this report (including Exhibit 99.1) is being furnished pursuant to

President and Chief Executive Officer — David Moon: David Moon intends to retire following the appointment of his replacement.

Costs Associated with Exit or Disposal Activities On February 25, 2026, the Company decided to wind down operations of the CO 2 retail grocery business within its Emerging Technologies Segment. Recent discussions with original equipment manufacturers and end user customers have made it increasingly evident that scaled adoption would require significant time, investment, and risk. The Company believes this investment no longer meets capital allocation criteria and thus acted quickly in an effo…

Material Impairments The information included under

Results of Operations and Financial Condition On February 25, 2026, Energy Recovery, Inc. (the “Company”) issued an earnings press release announcing its financial results for the fourth quarter and year ended December 31, 2025. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference in its entirety. The information in this report (including Exhibit 99.1) is being furnished pursuant to

Results of Operations and Financial Condition On November 5, 2025, Energy Recovery, Inc. (the “Company”) issued an earnings press release announcing its financial results for the third quarter and nine months ended September 30, 2025. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference in its entirety. The information in this report (including Exhibit 99.1) is being furnished pursuant to

Results of Operations and Financial Condition On August 6, 2025, Energy Recovery, Inc. (the “Company”) issued an earnings press release announcing its financial results for the second quarter and six months ended June 30, 2025. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference in its entirety. The information in this report (including Exhibit 99.1) is being furnished pursuant to

Other Events. On August 6, 2025 , Energy Recovery, Inc (the “Company”) announced that the Board of Directors of the Company authorized the Company to repurchase up to $25.0 million of outstanding shares of its common stock, $0.001 par value per share, pursuant to a new share repurchase program (the “August 2025 Authorization”). Under the August 2025 Authorization, the Company may repurchase shares through open market trades, block trades and/or privately negotiated transactions, in compliance…

Results of Operations and Financial Condition On May 7, 2025, Energy Recovery, Inc. (the “Company”) issued an earnings press release announcing its financial results for the first quarter ended March 31, 2025. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference in its entirety. The information in this report (including Exhibit 99.1) is being furnished pursuant to

Other Events. On February 26, 2025, the Company announced that the Board of Directors of the Company authorized the Company to repurchase up to $30.0 million of outstanding shares of its common stock, $0.001 par value per share, pursuant to a new share repurchase program (the “February 2025 Authorization”). Under the February 2025 Authorization, the Company may repurchase shares through open market trades, block trades and/or privately negotiated transactions, in compliance with applicable st…

Results of Operations and Financial Condition On February 26, 2025, Energy Recovery, Inc. (the “Company”) issued an earnings press release announcing its financial results for the fourth quarter and year ended December 31, 2024. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference in its entirety. The information in this report (including Exhibit 99.1) is being furnished pursuant to

Chief Technology Officer — Dr. Ram Ramanan: The company appointed Dr. Ram Ramanan as the new Chief Technology Officer.

Other Events. On November 18, 2024, the Company announced that the Board of Directors of the Company authorized the Company to repurchase up to $50.0 million of outstanding shares of its common stock, $0.001 par value per share, pursuant to a new share repurchase program (the “November 2024 Authorization”). Under the November 2024 Authorization, the Company may repurchase shares through open market trades, block trades and/or privately negotiated transactions, in compliance with applicable st…

Results of Operations and Financial Condition On October 30, 2024, Energy Recovery, Inc. (the “Company”) issued an earnings press release announcing its financial results for the third quarter and nine months ended September 30, 2024. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference in its entirety. The information in this report (including Exhibit 99.1) is being furnished pursuant to

Results of Operations and Financial Condition On July 31, 2024, Energy Recovery, Inc. (the “Company”) issued an earnings press release announcing its financial results for the second quarter and six months ended June 30, 2024. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference in its entirety. The information in this report (including Exhibit 99.1) is being furnished pursuant to

Chief Financial Officer (CFO) — Michael Mancini: The company hired a new CFO from an external source.

interim Chief Accounting Officer — Brandon Young: Mr. Brandon Young was promoted to interim Chief Accounting Officer within the company.

Chief Financial Officer — Mr. Joshua Ballard: Mr. Joshua Ballard resigned from his position as Chief Financial Officer with a severance agreement.

Results of Operations and Financial Condition On May 1, 2024, Energy Recovery, Inc. (the “Company”) issued an earnings press release announcing its financial results for the first quarter ended March 31, 2024. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference in its entirety. The information in this report (including Exhibit 99.1) is being furnished pursuant to