10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549 

FORM 10-Q

(Mark One)

☑QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2026

OR

☐TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from ____________ to __________

Commission File Number: 001-34112

Energy Recovery, Inc.

(Exact Name of Registrant as Specified in its Charter)

Delaware	01-0616867
(State or Other Jurisdiction of Incorporation)	(I.R.S. Employer Identification No.)

1717 Doolittle Drive, San Leandro, California  94577

                  (Address of Principal Executive Offices)                        (Zip Code)

(510) 483-7370

(Registrant’s Telephone Number, Including Area Code)

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol	Name of each exchange on which registered
Common Stock, $0.001 par value	ERII	The Nasdaq Stock Market LLC

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d)` of the Securities Exchange Act of 1934

during the preceding 12 months (or for such shorter period that the registrant was required to file such reports) and (2) has been subject to such filing

requirements for the past 90 days.  Yes þ  No ¨

Indicate by check mark whether the registrant has submitted electronically, every Interactive Data File required to be submitted pursuant to Rule 405 of

Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such

files).  Yes þ  No ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an

emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in

Rule 12b-2 of the Exchange Act.

Large accelerated filer  ☑Accelerated filer  ☐Non-accelerated filer  ☐Smaller reporting company  ☐Emerging growth company  ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or

revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Indicate by check mark whether the registrant is a shell company (as defined in Exchange Act Rule 12b-2).  Yes ☐  No ☑

As of April 30, 2026, there were 51,545,259 shares of the registrant’s common stock outstanding.

Energy Recovery, Inc. | Q1'2026 Quarterly Report (Form 10-Q)

TABLE OF CONTENTS

		Page No.
PART I
FINANCIAL INFORMATION
Item 1	Financial Statements (Unaudited)
	Condensed Consolidated Balance Sheets — March 31, 2026 and December 31, 2025	1
	Condensed Consolidated Statements of Operations — Three Months Ended March 31, 2026 and 2025	2
	Condensed Consolidated Statements of Comprehensive Loss — Three Months Ended March 31, 2026 and 2025	3
	Condensed Consolidated Statements of Stockholders’ Equity — Three Months Ended March 31, 2026 and 2025	4
	Condensed Consolidated Statements of Cash Flows — Three Months Ended March 31, 2026 and 2025	5
	Notes to Condensed Consolidated Financial Statements	6
Item 2	Management’s Discussion and Analysis of Financial Condition and Results of Operations	22
Item 3	Quantitative and Qualitative Disclosures About Market Risk	30
Item 4	Controls and Procedures	31
PART II
OTHER INFORMATION
Item 1	Legal Proceedings	32
Item 1A	Risk Factors	32
Item 2	Unregistered Sales of Equity Securities and Use of Proceeds	33
Item 3	Defaults Upon Senior Securities	33
Item 4	Mine Safety Disclosures	34
Item 5	Other Information	34
Item 6	Exhibits	35
Exhibit Index		35
Signatures		36

Energy Recovery, Inc. | Q1'2026 Quarterly Report (Form 10-Q) | FLS 1

Forward-Looking Information

This Quarterly Report on Form 10-Q for the three months ended March 31, 2026, including Part I, Item 2, “Management’s Discussion

and Analysis of Financial Condition and Results of Operations” (the “MD&A”), contains forward-looking statements within the “safe harbor”

provisions of the Private Securities Litigation Reform Act of 1995.  Forward-looking statements in this report include, but are not limited to,

statements about our expectations, objectives, anticipations, plans, hopes, beliefs, intentions or strategies regarding the future.

Forward-looking statements represent our current expectations about future events, are based on assumptions, and involve risks and

uncertainties.  If the risks or uncertainties occur or the assumptions prove incorrect, then our results may differ materially from those set forth

or implied by the forward-looking statements.  Our forward-looking statements are not guarantees of future performance or events.

Words such as “expects,” “anticipates,” “aims,” “projects,” “intends,” “plans,” “believes,” “estimates,” “seeks,” “continue,” “could,”

“may,” “potential,” “should,” “will,” “would,” and variations of such words and similar expressions are also intended to identify such forward-

looking statements.  These forward-looking statements are subject to risks, uncertainties and assumptions that are difficult to predict;

therefore, actual results may differ materially and adversely from those expressed in any forward-looking statement.  Readers are directed to

risks and uncertainties identified under Part II, Item 1A, “Risk Factors,” and elsewhere in this report for factors that may cause actual results

to be different from those expressed in these forward-looking statements.  Except as required by law, we undertake no obligation to revise or

update publicly any forward-looking statement for any reason.

Forward-looking statements in this report include, without limitation, statements about the following:

•our belief that our PX offers market-leading value with the highest technological and economic benefit;

•our belief that leveraging our pressure exchanger technology will unlock new commercial opportunities in the future;

•our belief that our technology helps our customer achieve environmentally sustainable operations;

•our expectation that sales outside of the U.S. will remain a significant portion of our revenue;

•the scale of the environmental impact from the use of our solutions;

•the timing of our receipt of payment for products or services from our customers;

•our belief that our existing cash and cash equivalents, our short and/or long-term investments, and the ongoing cash generated

from our operations, will be sufficient to meet our anticipated liquidity needs for the foreseeable future, with the exception of a

decision to enter into an acquisition and/or fund investments in our latest technology arising from rapid market adoption that

could require us to seek additional equity or debt financing;

•our expectations relating to the amount and timing of recognized revenue from our projects;

•our expectation that we will continue to receive a tax benefit related to U.S. federal foreign-derived intangible income and

research and development tax credit;

•the outcome of proceedings, lawsuits, disputes and claims;

•the impact of losses due to indemnification obligations;

•other factors disclosed under the MD&A and Part I, Item 3, “Quantitative and Qualitative Disclosures about Market Risk,” and

elsewhere in this Form 10-Q.

You should not place undue reliance on these forward-looking statements.  These forward-looking statements reflect management’s

opinions only as of the date of the filing of this Quarterly Report on Form 10-Q.  All forward-looking statements included in this document are

subject to additional risks and uncertainties further discussed under Part II, Item 1A, “Risk Factors,” and are based on information available to

us as of May 6, 2026.  We assume no obligation to update any such forward-looking statements.  Certain risks and uncertainties could cause

actual results to differ materially from those projected in the forward-looking statements.  These forward-looking statements are disclosed

from time to time in our Annual Reports on Form 10‑K, Quarterly Reports on Form 10‑Q and Current Reports on Form 8‑K filed with, or

furnished to, the Securities and Exchange Commission (the “SEC”), as well as in Part II, Item 1A, “Risk Factors,” within this Quarterly Report

on Form 10-Q.

Energy Recovery, Inc. | Q1'2026 Quarterly Report (Form 10-Q) | FLS 2

It is important to note that our actual results could differ materially from the results set forth or implied by our forward-looking

statements.  The factors that could cause our actual results to differ from those included in such forward-looking statements are set forth

under the heading Item 1A, “Risk Factors,” in our Quarterly Reports on Form 10-Q, in our Annual Reports on Form 10-K, and from time-to-

time, in our results disclosed in our Current Reports on Form 8-K.  In addition, when preparing the MD&A below, we presume the readers

have access to and have read the MD&A in our Annual Report on Form 10-K, pursuant to Instruction 2 to paragraph (b) of Item 303 of

Regulation S-K.

We provide our Annual Reports on Form 10‑K, Quarterly Reports on Form 10‑Q, Current Reports on Form 8‑K, Proxy Statements on

Schedule 14A, Forms 3, 4 and 5 filed by, or on behalf of, directors, executive officers and certain large shareholders, and any amendments to

those documents filed or furnished pursuant to the Securities Exchange Act of 1934, free of charge on the Investor Relations section of our

website, www.energyrecovery.com.  These filings will become available as soon as reasonably practicable after such material is

electronically filed with or furnished to the SEC.  From time to time, we may use our website as a channel of distribution of material company

information.

We also make available in the Investor Relations section of our website our corporate governance documents including our code of

business conduct and ethics and the charters of the audit, compensation and nominating and governance committees.  These documents, as

well as the information on the website, are not intended to be part of this Quarterly Report on Form 10-Q.  We use the Investor Relations

section of our website as a means of complying with our disclosure obligations under Regulation FD.  Accordingly, you should monitor the

Investor Relations section of our website in addition to following our press releases, SEC filings and public conference calls and webcasts.

Energy Recovery, Inc. | Q1'2026 Quarterly Report (Form 10-Q) | 1

PART I — FINANCIAL INFORMATION

Item 1 — Financial Statements (unaudited)

ENERGY RECOVERY, INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

	March 31, 2026	December 31, 2025
	(In thousands)
ASSETS
Current assets:
Cash and cash equivalents	$50,116	$48,076
Short-term investments	36,035	27,173
Accounts receivable, net	38,941	76,639
Inventories, net	30,886	24,260
Prepaid expenses and other assets	5,084	5,063
Total current assets	161,062	181,211
Long-term investments	5,991	8,034
Deferred tax assets, net	10,115	8,267
Property and equipment, net	12,761	12,934
Operating lease, right of use asset	7,194	7,701
Goodwill	11,128	12,790
Other assets, non-current	737	577
Total assets	$208,988	$231,514
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Accounts payable	$2,790	$2,114
Accrued expenses and other liabilities	10,890	11,670
Lease liabilities	2,591	2,531
Contract liabilities	1,080	1,039
Total current liabilities	17,351	17,354
Lease liabilities, non-current	6,254	6,898
Other liabilities, non-current	1,098	1,070
Total liabilities	24,703	25,322
Commitments and contingencies (Note 7)
Stockholders’ equity:
Common stock	67	67
Additional paid-in capital	245,663	244,397
Accumulated other comprehensive loss	(285)	(94)
Treasury stock	(177,577)	(166,846)
Retained earnings	116,417	128,668
Total stockholders’ equity	184,285	206,192
Total liabilities and stockholders’ equity	$208,988	$231,514

See Accompanying Notes to Condensed Consolidated Financial Statements

Energy Recovery, Inc. | Q1'2026 Quarterly Report (Form 10-Q) | 2

ENERGY RECOVERY, INC.

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

	Three Months Ended March 31,
	2026	2025
	(In thousands, except per share data)
Revenue	$9,706	$8,065
Cost of revenue	5,372	3,607
Restructuring - inventory reserve	1,632	—
Gross profit	2,702	4,458
Operating expenses:
General and administrative	6,455	8,574
Sales and marketing	5,119	4,906
Research and development	2,789	3,001
Restructuring charges	1,536	539
Impairment of goodwill	1,662	—
Total operating expenses	17,561	17,020
Loss from operations	(14,859)	(12,562)
Other income:
Interest income	725	1,073
Other non-operating income, net	108	6
Total other income, net	833	1,079
Loss before income taxes	(14,026)	(11,483)
Benefit from income taxes	(1,775)	(1,603)
Net loss	$(12,251)	$(9,880)
Net loss per share:
Basic and diluted	$ (0.23)	$ (0.18)
Number of shares used in per share calculations:
Basic and diluted	52,660	54,902

See Accompanying Notes to Condensed Consolidated Financial Statements

Energy Recovery, Inc. | Q1'2026 Quarterly Report (Form 10-Q) | 3

ENERGY RECOVERY, INC.

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS

	Three Months Ended March 31,
	2026	2025
	(In thousands)
Net loss	$(12,251)	$(9,880)
Other comprehensive loss, net of tax
Foreign currency translation adjustments	(123)	(16)
Unrealized loss on investments	(68)	(7)
Total other comprehensive loss, net of tax	(191)	(23)
Comprehensive loss	$(12,442)	$(9,903)

See Accompanying Notes to Condensed Consolidated Financial Statements

Energy Recovery, Inc. | Q1'2026 Quarterly Report (Form 10-Q) | 4

ENERGY RECOVERY, INC.

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY

	Three Months Ended March 31,
	2026	2025
(In thousands, except shares)
Common stock
Beginning balance	$67	$66
Issuance of common stock	—	1
Ending balance	67	67
Additional paid-in capital
Beginning balance	244,397	235,010
Issuance of common stock	—	1,091
Shares held for tax withholdings	(682)	(476)
Stock-based compensation	1,948	1,925
Ending balance	245,663	237,550
Accumulated other comprehensive (loss) income
Beginning balance	(94)	98
Other comprehensive loss
Foreign currency translation adjustments	(123)	(16)
Unrealized loss on investments	(68)	(7)
Total other comprehensive loss, net	(191)	(23)
Ending balance	(285)	75
Treasury stock
Beginning balance	(166,846)	(130,870)
Common stock repurchased	(10,731)	(4,535)
Ending balance	(177,577)	(135,405)
Retained earnings
Beginning balance	128,668	105,706
Net loss	(12,251)	(9,880)
Ending balance	116,417	95,826
Total stockholders’ equity	$184,285	$198,113
Common stock issued (shares)
Beginning balance	66,774,081	66,182,906
Issuance of common stock	236,340	350,146
Ending balance	67,010,421	66,533,052
Treasury stock (shares)
Beginning balance	13,967,259	11,397,045
Common stock repurchased	960,303	279,295
Ending balance	14,927,562	11,676,340
Total common stock outstanding (shares)
Beginning Balance	52,806,822	54,785,861
Issuance of common stock	236,340	350,146
Common stock repurchased	(960,303)	(279,295)
Ending Balance	52,082,859	54,856,712

See Accompanying Notes to Condensed Consolidated Financial Statements

Energy Recovery, Inc. | Q1'2026 Quarterly Report (Form 10-Q) | 5

ENERGY RECOVERY, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

	Three Months Ended March 31,
	2026	2025
	(In thousands)
Cash flows from operating activities:
Net loss	$(12,251)	$(9,880)
Adjustments to reconcile net loss to cash provided by operating activities
Stock-based compensation	1,963	1,963
Depreciation and amortization	978	962
Accretion (amortization) of discounts (premiums) on investments	(82)	(231)
Deferred income taxes	(1,848)	(1,641)
Impairment of long-lived assets	—	353
Impairment of goodwill	1,662	—
Restructuring - inventory reserve	1,632	—
Other non-cash adjustments	(36)	21
Changes in operating assets and liabilities:
Accounts receivable, net	37,698	31,677
Contract assets	(54)	378
Inventories, net	(8,400)	(7,645)
Prepaid and other assets	38	(37)
Accounts payable	561	176
Accrued expenses and other liabilities	(865)	(6,248)
Contract liabilities	41	830
Net cash provided by operating activities	21,037	10,678
Cash flows from investing activities:
Maturities of marketable securities	10,950	27,224
Purchases of marketable securities	(17,755)	(14,369)
Capital expenditures	(814)	(191)
Proceeds from sales of fixed assets	13	10
Net cash (used in) provided by investing activities	(7,606)	12,674
Cash flows from financing activities:
Net proceeds from issuance of common stock	—	1,092
Tax payment for employee shares withheld	(682)	(476)
Repurchase of common stock	(10,660)	(4,490)
Payment of excise tax associated with repurchase of common stock	(34)	—
Net cash used in financing activities	(11,376)	(3,874)
Effect of exchange rate differences on cash and cash equivalents	(15)	33
Net change in cash, cash equivalents and restricted cash	2,040	19,511
Cash, cash equivalents and restricted cash, beginning of year	48,076	29,757
Cash, cash equivalents and restricted cash, end of period	$50,116	$49,268

See Accompanying Notes to Condensed Consolidated Financial Statements

Energy Recovery, Inc. | Q1'2026 Quarterly Report (Form 10-Q) | 6

ENERGY RECOVERY, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Note 1 — Description of Business and Significant Accounting Policies

Energy Recovery, Inc. and its wholly-owned subsidiaries (the “Company” or “Energy Recovery”) designs and manufactures world-

class energy-saving technology for critical infrastructure that communities rely on every day, driving a more resilient and sustainable future. 

Leveraging the Company’s pressure exchanger technology, which generates little to no emissions when operating, the Company believes its

solutions lower costs, save energy, reduce waste, and minimize emissions for companies across a variety of commercial and industrial

processes.  As the world coalesces around the urgent need to address climate change and its impacts, the Company is helping companies

reduce their energy consumption in their industrial processes, which in turn, reduces their carbon footprint.  The Company believes that its

customers do not have to sacrifice quality and cost savings for sustainability and the Company is committed to developing solutions that drive

long-term value – both financial and environmental.  The Company’s solutions are marketed, sold in, and developed for, the fluid-flow and

gas markets, such as seawater and wastewater desalination, natural gas, chemical processing and CO2-based refrigeration systems, under

the trademarks ERI®, PX®, Pressure Exchanger®, PX® Pressure Exchanger® (“PX”), Ultra High-Pressure PX, PX G™, PX G1300®,

PX PowerTrain™, AT™, and Aquabold™.  The Company owns, manufactures and/or develops its solutions, in whole or in part, in the United

States of America (the “U.S.”).

Basis of Presentation

The Condensed Consolidated Financial Statements include the accounts of Energy Recovery, Inc. and its wholly-owned subsidiaries. 

All intercompany accounts and transactions have been eliminated in consolidation.

The accompanying Condensed Consolidated Financial Statements have been prepared pursuant to the rules and regulations of the

Securities and Exchange Commission (the “SEC”).  Certain information and footnote disclosures normally included in the financial statements

prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) have been condensed or omitted pursuant to such rules

and regulations.  The December 31, 2025 Condensed Consolidated Balance Sheet was derived from audited financial statements and may

not include all disclosures required by GAAP; however, the Company believes that the disclosures are adequate to make the information

presented not misleading.

The March 31, 2026 unaudited Condensed Consolidated Financial Statements should be read in conjunction with the audited

Consolidated Financial Statements and the notes thereto for the fiscal year ended December 31, 2025 included in the Company’s Annual

Report on Form 10-K filed with the SEC on February 25, 2026 (the “2025 Annual Report”).

The results of operations for the interim periods are not necessarily indicative of the operating results for the full fiscal year or any

future periods.

Reclassifications

Certain prior period amounts have been reclassified in certain notes to the Condensed Consolidated Financial Statements to conform

to the current period presentation.

Energy Recovery, Inc. | Q1'2026 Quarterly Report (Form 10-Q) | 7

ENERGY RECOVERY, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Use of Estimates

The preparation of Condensed Consolidated Financial Statements, in conformity with GAAP, requires the Company’s management to

make judgments, assumptions and estimates that affect the amounts reported in the Condensed Consolidated Financial Statements and

accompanying notes.

The accounting policies that reflect the Company’s significant estimates and judgments and that the Company believes are the most

critical to aid in fully understanding and evaluating its reported financial results are revenue recognition; stock-based compensation expense;

equipment useful life and valuation; goodwill valuation and impairment; inventory valuation and allowances, deferred taxes and valuation

allowances on deferred tax assets; and evaluation and measurement of contingencies. Those estimates could change, and as a result,

actual results could differ materially from those estimates.

The Company is not aware of any specific event or circumstance that would require an update to its estimates or judgments or a

revision of the carrying value of its assets or liabilities as of May 6, 2026, the date of issuance of this Quarterly Report on Form 10-Q.  These

estimates may change, as new events occur and additional information is obtained.  Actual results could differ materially from these

estimates under different assumptions or conditions.  The Company undertakes no obligation to publicly update these estimates for any

reason after the date of this Quarterly Report on Form 10-Q, except as required by law.

Significant Accounting Policies

There have been no material changes to the Company’s significant accounting policies in Note 1, “Description of Business and

Significant Accounting Policies - Significant Accounting Policies,” of the Notes to Consolidated Financial Statements included in Item 8,

“Financial Statements and Supplementary Data,” of the 2025 Annual Report.

Recently Adopted Accounting Pronouncement

In July 2025, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update 2025-05, Measurement of

Credit Losses for Accounts Receivable and Contract Assets (“ASU 2025-05”).  ASU 2025-05 provides a practical expedient for measuring

expected credit losses on current accounts receivables and contract assets by assuming that conditions at the balance sheet date remain

unchanged over the life of the asset. The Company adopted ASU 2025-05 on January 1, 2026 and the adoption did not have a material

impact on results of operations, cash flows, or financial condition.

Recently Issued Accounting Pronouncements Not Yet Adopted

There have been no issued accounting pronouncements that have not yet been adopted during the three months ended March 31,

2026 that apply to the Company other than the pronouncements disclosed in Note 1, “Description of Business and Significant Accounting

Policies - Recently Issued Accounting Pronouncements Not Yet Adopted,” of the Notes to Consolidated Financial Statements included in Item

8, “Financial Statements and Supplementary Data,” of the 2025 Annual Report.

Energy Recovery, Inc. | Q1'2026 Quarterly Report (Form 10-Q) | 8

ENERGY RECOVERY, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Note 2 — Revenue

Disaggregation of Revenue

The following table presents the disaggregated revenues by segment, and within each segment, by geographical market based on the

customer “shipped to” address, and by channel customers.  Sales and usage-based taxes are excluded from revenues.  See Note 9,

“Segment Reporting,” for further discussion related to the Company’s segments.

	Three Months Ended March 31, 2026				Three Months Ended March 31, 2025
	Desalination	Wastewater	Emerging Technologies	Total	Desalination	Wastewater	Emerging Technologies	Total
(In thousands)
Geographical market
Middle East	$2,506	$—	$77	$2,583	$2,014	$—	$1	$2,015
Africa	196	—	—	196	866	—	—	$866
Other	6,205	601	121	6,927	4,879	305	—	$5,184
Total revenue	$8,907	$601	$198	$9,706	$7,759	$305	$1	$8,065
Channel
Original equipment manufacturer	$5,866	$601	$121	$6,588	$3,813	$188	$—	$4,001
Aftermarket	2,677	—	77	2,754	3,910	117	1	$4,028
Megaproject	364	—	—	364	36	—	—	$36
Total revenue	$8,907	$601	$198	$9,706	$7,759	$305	$1	$8,065

Contract Balances

The following table presents contract balances by category.

	March 31, 2026	December 31, 2025
	(In thousands)
Accounts receivable, net	$38,941	$76,639
Contract assets, current (included in prepaid expenses and other assets)	$1,701	$1,647
Contract liabilities:
Contract liabilities, current	$1,080	$1,039
Total contract liabilities	$1,080	$1,039

Contract Liabilities

The Company records contract liabilities, which consist of customer deposits and deferred revenue, when cash payments are

received in advance of the Company’s performance.  The following table presents the change in contract liability balances during the reported

periods.

	March 31, 2026	December 31, 2025
(In thousands)
Contract liabilities, beginning of year	$1,039	$571
Revenue recognized	(462)	(297)
Cash received, excluding amounts recognized as revenue during the period	503	765
Contract liabilities, end of period	$1,080	$1,039

Energy Recovery, Inc. | Q1'2026 Quarterly Report (Form 10-Q) | 9

ENERGY RECOVERY, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Remaining Performance Obligations

As of March 31, 2026, the following table presents the revenue that is expected to be recognized related to performance obligations

that are unsatisfied or partially unsatisfied.

Period	Remaining Performance Obligations
	(In thousands)
2026 (remaining nine months)	$10,461
2027	6,587
Total	$17,048

Energy Recovery, Inc. | Q1'2026 Quarterly Report (Form 10-Q) | 10

ENERGY RECOVERY, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Note 3 — Loss Per Share

Net loss for the reported period is divided by the weighted average number of basic and diluted common shares outstanding during

the reported period to calculate the basic and diluted loss per share, respectively.  Outstanding stock options to purchase common shares,

unvested restricted stock units (“RSUs”), and unvested performance restricted stock units (“PRSUs”) are collectively referred to as “equity

awards.”

•Basic loss per share is computed using the weighted average number of common shares outstanding during the period.

•Diluted loss per share is computed using the weighted average number of common and potentially dilutive shares outstanding

during the period, using the treasury stock method.  Any anti-dilutive effect of equity awards outstanding is not included in the

computation of diluted loss per share.

The following table presents the computation of basic and diluted loss per share.

	Three Months Ended March 31,
	2026	2025
(In thousands, except per share amounts)
Numerator
Net loss	$(12,251)	$(9,880)
Denominator (weighted average shares)
Basic and dilutive common shares outstanding	52,660	54,902
Diluted common shares outstanding	52,660	54,902
Loss Per Share
Basic and dilutive	$ (0.23)	$ (0.18)

The following table presents the equity awards that are excluded from diluted loss per share because (i) their effect would have been

anti-dilutive, or (ii) the equity awards were contingent upon conditions for issuance which were not satisfied as of March 31, 2026.

	Three Months Ended March 31,
	2026	2025
(In thousands)
Anti-dilutive equity award shares	3,305	2,806

Energy Recovery, Inc. | Q1'2026 Quarterly Report (Form 10-Q) | 11

ENERGY RECOVERY, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Note 4 — Other Financial Information

Cash, Cash Equivalents and Restricted Cash

The Condensed Consolidated Statements of Cash Flows explain the changes in the total of cash, cash equivalents and restricted

cash.  The following table presents a reconciliation of cash, cash equivalents and restricted cash, such as cash amounts deposited in

restricted cash accounts in connection with the Company’s credit cards, reported for each period within the Condensed Consolidated Balance

Sheets and the Condensed Consolidated Statements of Cash Flows that sum to the total of such amounts.

	March 31, 2026	December 31, 2025	March 31, 2025
	(In thousands)
Cash and cash equivalents	$50,116	$48,076	$49,137
Restricted cash, non-current (included in other assets, non-current)	—	—	131
Total cash, cash equivalents and restricted cash	$50,116	$48,076	$49,268

Inventories, net

Inventory amounts are stated at the lower of cost or net realizable value, using the first-in, first-out method.

	March 31, 2026	December 31, 2025
	(In thousands)
Raw materials	$9,688	$8,289
Work in process	6,879	6,270
Finished goods	17,035	10,768
Inventories, gross	33,602	25,327
Valuation adjustments for excess and obsolete inventory	(2,716)	(1,067)
Inventories, net	$30,886	$24,260

Goodwill

Goodwill is tested for impairment annually in the third quarter of the Company’s fiscal year or more frequently if indicators of potential

impairment exist.  The Company monitors the industries in which it operates and reviews its business performance for indicators of potential

impairment.  The recoverability of goodwill is measured at the reporting unit level, which represents the operating segment. 

In February 2026, the Company wound down operations of the CO2 retail grocery business within its Emerging Technologies

segment due to a fundamental change in the outlook of the business. The Company considered the wind down to be an indicator of

impairment and performed a quantitative impairment test using the discounted cash flow approach and market approach. Based on the

results of the analysis, the Company determined that the carrying value of the reporting unit exceeded its fair value and recorded an

impairment charge of $1.7 million during the three months ended March 31, 2026.

Energy Recovery, Inc. | Q1'2026 Quarterly Report (Form 10-Q) | 12

ENERGY RECOVERY, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Accrued Expenses and Other Liabilities

	March 31, 2026	December 31, 2025
	(In thousands)
Accrued expenses and other liabilities, current
Payroll, benefits, incentives and commissions payable	$5,033	$6,683
Warranty reserve	189	205
Restructuring accrual	961	—
Income taxes payable	2,382	2,401
Other accrued expenses and other liabilities	2,325	2,381
Total accrued expenses and other liabilities	10,890	11,670
Other liabilities, non-current	1,098	1,070
Total accrued expenses, and current and non-current other liabilities	$11,988	$12,740

Restructuring

2024 Restructuring Plan

During the fourth quarter of fiscal year 2024, the Company implemented a restructuring plan which included reductions primarily within

the G&A function, in order to lower the Company’s operating cost structure, and to position the Company for profitable growth.  The Company

recorded a restructuring charge of approximately $2.8 million in total, of which $0.5 million was recorded during the three months ended

March 31, 2025. The total restructuring charge recorded relates to severance and benefits, including reemployment assistance, for

38 terminated employees, which was approximately 15% of the Company’s workforce.  The restructuring plan was complete as of December

31, 2025.  All expenses associated with the Company’s restructuring plan are included in “Restructuring charges” in the Condensed

Consolidated Statements of Operations.

2026 Restructuring Plan

During the first quarter of fiscal year 2026, the Company wound down operations of the CO2 retail grocery business within its

Emerging Technologies segment due to a fundamental change in the outlook of the business. The Company recorded a restructuring charge

of approximately $1.5 million during the three months ended March 31, 2026. The restructuring charge recorded relates to severance and

benefits, including reemployment assistance, for 23 terminated employees. In addition, the Company incurred other related charges

associated with the wind down of the CO2 retail grocery business, including excess and obsolescence reserves taken on CO2 inventory of

approximately $1.6 million and impairment of goodwill of approximately $1.7 million, which are included in “Restructuring - inventory reserve”

and “Impairment of goodwill” in the Condensed Consolidated Statements of Operations, respectively. Refer to section Goodwill within this

footnote for additional information. The restructuring plan was substantially complete by the end of the first quarter of fiscal year 2026 and the

Company does not expect to incur significant additional expenses related to the restructuring.

Energy Recovery, Inc. | Q1'2026 Quarterly Report (Form 10-Q) | 13

ENERGY RECOVERY, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

The following table presents the change in the Company’s restructuring accrual balances, which is included within Accrued expenses

and other liabilities on the Condensed Consolidated Balance Sheets, during the three months ended March 31, 2026:

	Severance and Benefits
	(In thousands)
Balance, as of December 31, 2024	$2,476
Restructuring provision, net of adjustments	313
Cash paid	(2,789)
Balance, as of December 31, 2025	$—
Restructuring provision	1,536
Cash paid	(575)
Balance, as of March 31, 2026	$961

Energy Recovery, Inc. | Q1'2026 Quarterly Report (Form 10-Q) | 14

ENERGY RECOVERY, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Note 5 — Investments and Fair Value Measurements

Fair Value of Financial Instruments

The following table presents the Company’s financial assets measured on a recurring basis by contractual maturity, including pricing

category, amortized cost and fair value. Gross unrealized gains and losses were not material for the periods presented.  As of March 31,

2026 and December 31, 2025, the Company had no financial liabilities and no Level 3 financial assets.

		March 31, 2026		December 31, 2025
	Pricing Category	Amortized Cost	Fair Value	Amortized Cost	Fair Value
		(In thousands)
Cash equivalents
Money market securities	Level 1	$17,892	$17,892	$11,225	$11,225
U.S. treasury securities	Level 2	—	—	12,952	12,955
Total cash equivalents		17,892	17,892	24,177	24,180
Short-term investments
U.S. treasury securities	Level 2	26,535	26,539	13,618	13,640
Corporate notes and bonds	Level 2	9,507	9,496	13,505	13,533
Total short-term investments		36,042	36,035	27,123	27,173
Long-term investments
U.S. treasury securities	Level 2	955	957	1,959	1,971
Corporate notes and bonds	Level 2	5,026	5,034	6,038	6,063
Total long-term investments		5,981	5,991	7,997	8,034
Total short and long-term investments		42,023	42,026	35,120	35,207
Total		$59,915	$59,918	$59,297	$59,387

Energy Recovery, Inc. | Q1'2026 Quarterly Report (Form 10-Q) | 15

ENERGY RECOVERY, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Note 6 — Lines of Credit

Credit Agreement

The Company entered into a credit agreement with JPMorgan Chase Bank, N.A. on December 22, 2021 (as amended, the “Credit

Agreement”). The Credit Agreement was amended on January 21, 2026 to extend the expiration date from December 21, 2026 to

January 21, 2031. The Credit Agreement provides a committed revolving credit line of $50.0 million and includes both a revolving loan and a

letters of credit (“LCs”) component. 

Under the Credit Agreement, as of March 31, 2026, there were no revolving loans outstanding.  In addition, under the LCs

component, as of March 31, 2026 and December 31, 2025, the Company utilized $20.4 million of the maximum allowable credit line of

$30.0 million, which includes newly issued LCs and previously issued and unexpired stand-by letters of credit (“SBLCs”).

Energy Recovery, Inc. | Q1'2026 Quarterly Report (Form 10-Q) | 16

ENERGY RECOVERY, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Note 7 — Commitments and Contingencies

Sublease

On March 10, 2025, the Company entered into an agreement to sublease its Katy, Texas operating lease. The sublease commenced

on March 10, 2025 and will expire on December 31, 2029. The sublease is classified as an operating lease and has a remaining lease term

of 3.8 years as of March 31, 2026. Sublease income was immaterial during the three months ended March 31, 2026 and 2025, and is

recorded as a reduction of lease expense in general and administrative within the Company’s Condensed Consolidated Statements of

Operations.

The Company considered the sublease to be an indicator of impairment of the original lease. The Company compared the

undiscounted cash flows from the sublease to the carrying value of the Katy, Texas operating lease, which included the associated right-of-

use asset and leasehold improvements. The Company concluded that the carrying value was not recoverable as it exceeded the estimated

undiscounted cash flows.

The Company calculated the impairment charge by comparing the carrying value of the Katy, Texas operating lease to its fair value,

which was calculated based on the net discounted cash flows associated with the sublease. The Company recorded a total impairment

charge of $0.4 million during the three months ended March 31, 2025, of which $0.2 million and $0.2 million was recorded against the right-

of-use asset and the associated leasehold improvements, respectively. The allocation of the impairment charge was based on the relative

carrying value of the assets. The impairment charge was recorded in general and administrative within the Company’s Condensed

Consolidated Statements of Operations.

Litigation

From time-to-time, the Company has been named in and subject to various proceedings and claims in connection with its business. 

The Company may in the future become involved in litigation in the ordinary course of business, including litigation that could be material to

its business.  The Company considers all claims, if any, on a quarterly basis and, based on known facts, assesses whether potential losses

are considered reasonably possible, probable and estimable.  Based upon this assessment, the Company then evaluates disclosure

requirements and whether to accrue for such claims in its consolidated financial statements.  The Company records a provision for a liability

when it is both probable that a liability has been incurred and the amount of the loss can be reasonably estimated.  These provisions are

reviewed at least quarterly and are adjusted to reflect the impacts of negotiations, settlements, rulings, advice of legal counsel and other

information and events pertaining to a particular case.  As of March 31, 2026, the Company was not involved in any lawsuits, legal

proceedings or claims that would have a material effect on the Company’s financial position, results of operations, or cash flows.  Therefore,

there were no material losses which were probable or reasonably estimable and accordingly, the Company did not record a provision for

litigation as of March 31, 2026 and December 31, 2025.

Energy Recovery, Inc. | Q1'2026 Quarterly Report (Form 10-Q) | 17

ENERGY RECOVERY, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Note 8 — Income Taxes

	Three Months Ended March 31,
	2026	2025
(In thousands, except percentages)
Benefit from income taxes	$(1,775)	$(1,603)
Discrete items	(132)	52
Benefit from income taxes, excluding discrete items	$(1,907)	$(1,551)
Effective tax rate	12.7%	14.0%
Effective tax rate, excluding discrete items	13.6%	13.5%

The Company’s interim period tax benefit from income taxes is determined using an estimate of its annual effective tax rate, adjusted

for discrete items, if any, that arise during the period.  Each quarter, the Company updates its estimate of the annual effective tax rate, and if

the estimated annual effective tax rate changes, the Company makes a cumulative adjustment in such period.  The Company’s quarterly tax

provision and estimate of its annual effective tax rate are subject to variation due to several factors, including variability in accurately

predicting its pre-tax income or loss and the mix of jurisdictions to which they relate, the applicability of special tax regimes, and changes in

how the Company does business.

For the three months ended March 31, 2026, the recognized benefit from income taxes resulted from the tax projection based on the

full year forecasted profit and included benefits related to the U.S. federal foreign income and foreign-derived deduction eligible

income (“FDDEI”) federal research and development (“R&D”) tax credit, reduced by certain permanent differences, such as non-deductible

stock-based compensation.

For the three months ended March 31, 2025, the recognized benefit from income taxes resulted from the tax projection based on the

full year forecasted profit and included benefits related to the U.S. federal foreign-derived intangible income (“FDII”), federal R&D tax credit,

certain permanent differences, such as stock-based compensation shortfalls, and partial release of California valuation allowance.

The effective tax rate excluding discrete items for the three months ended March 31, 2026, as compared to the prior year, differed

primarily due to lower projected federal R&D tax credits, increased non-deductible officer stock-based compensation, largely offset by

projected higher U.S. FDDEI benefits.

On July 4, 2025, the One Big Beautiful Bill (“OBBBA”) Act, which includes a broad range of tax reform provisions, was signed into law

in the United States. During the three months ended March 31, 2026, the Company recorded its best estimate of the impact of the OBBBA on

the income tax provision. The Company will continue to evaluate the elections available within the OBBBA, which may impact the timing of

permanent and temporary differences within the Company’s tax provision. 

Energy Recovery, Inc. | Q1'2026 Quarterly Report (Form 10-Q) | 18

ENERGY RECOVERY, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Note 9 — Segment Reporting

The Company’s Chief Operating Decision-Maker (“CODM”) is its President and Chief Executive Officer.  The Company continues to

monitor and review its segment reporting structure in accordance with authoritative guidance to determine whether any changes have

occurred that would impact its reportable segments.

During the three months ended March 31, 2026, the Company changed the composition of its reportable segments to better reflect

how the CODM manages the business. As a part of this change, the Water segment was separated into two segments, the Desalination

segment and the Wastewater segment, as both met the criteria of a reportable segment. Prior periods have been recast to conform to the

current year presentation. The recast of prior year information had no impact on the Company’s Condensed Consolidated Balance Sheets,

Condensed Consolidated Statements of Operations, Condensed Consolidated Statements of Comprehensive Loss or Condensed

Consolidated Statements of Cash Flows.

Segment Definition

Income and type of expense activities that are included in the Desalination, Wastewater and Emerging Technologies segments and

corporate operating expenses are as follows:

Desalination segment:  The continued development, sales and support of the PX, hydraulic turbochargers and pumps used in

seawater desalination treatment facilities.

Wastewater segment: The continued development, sales and support of the PX, hydraulic turbochargers and pumps used in

wastewater treatment facilities.

Emerging Technologies segment:  The continued development, sales and support of activities related to emerging

technologies, such as the PX G1300 used in industrial and commercial refrigeration applications. In February 2026, the

Company wound down operations of the CO2 retail grocery business within its Emerging Technologies segment due to a

fundamental change in the outlook of the business. As of the first quarter of fiscal year 2026, the Company has substantially

completed the wind down of the business.

Corporate operating expenses:  The corporate expenses include certain unallocated expenses outside of the operating

segments, such as audit and accounting services, legal services, board of director fees and expenses, human resources

activities, information systems activities and other separately managed general expenses not related to the identified

segments. 

Energy Recovery, Inc. | Q1'2026 Quarterly Report (Form 10-Q) | 19

ENERGY RECOVERY, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

The following table presents a summary of the Company’s financial information by segment, including significant segment expenses,

and corporate operating expenses.

	Three Months Ended March 31, 2026					Three Months Ended March 31, 2025
	Desalination	Wastewater	Emerging Technologies	Corporate	Total	Desalination	Wastewater	Emerging Technologies	Corporate	Total
(In thousands)
Revenue	$8,907	$601	$198	$—	$9,706	$7,759	$305	$1	$—	$8,065
Cost of revenue	4,942	370	60	—	5,372	3,382	179	46	—	3,607
Restructuring - inventory reserve	—	—	1,632	—	1,632	—	—	—	—	—
Gross profit (loss)	3,965	231	(1,494)	—	2,702	4,377	126	(45)	—	4,458
Operating expenses
General and administrative	756	981	348	4,370	6,455	845	728	755	6,246	8,574
Sales and marketing	2,485	1,163	858	613	5,119	2,108	1,037	1,270	491	4,906
Research and development	1,616	136	1,037	—	2,789	849	329	1,823	—	3,001
Restructuring charges	335	18	1,140	43	1,536	107	103	123	206	539
Impairment of goodwill	—	—	1,662	—	1,662	—	—	—	—	—
Total operating expenses	5,192	2,298	5,045	5,026	17,561	3,909	2,197	3,971	6,943	17,020
Operating income (loss)	$(1,227)	$(2,067)	$(6,539)	$(5,026)	$(14,859)	$468	$(2,071)	$(4,016)	$(6,943)	$(12,562)

Energy Recovery, Inc. | Q1'2026 Quarterly Report (Form 10-Q) | 20

ENERGY RECOVERY, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Note 10 — Concentrations

Revenue by Country

The following table presents the Company’s product revenue by country. 

	Three Months Ended March 31,
	2026	2025
Product revenue by country:(1)
Cyprus	12%	**
Egypt	12%	**
India	**	18%
Others(2)	76%	82%
Total	100%	100%

**Zero or less than 10%.

(1)Countries representing more than 10% of product revenues for the periods presented.

(2)Countries in the aggregate, individually representing less than 10% of product revenues for the periods presented.

Customer Revenue Concentration

The following table presents the customers that account for 10% or more of the Company’s revenue and their related segment for

each of the periods presented.  Although certain customers might account for greater than 10% of the Company’s revenue at any one point in

time, the concentration of revenue between a limited number of customers shifts regularly, depending on when revenue is recognized.  The

percentages by customer reflect specific relationships or contracts that would concentrate revenue for the periods presented and do not

indicate a trend specific to any one customer.

		Three Months Ended March 31,
	Segment	2026	2025
Customer A	Desalination	13%	**
Customer B	Desalination	**	12%

**Zero or less than 10%.

Energy Recovery, Inc. | Q1'2026 Quarterly Report (Form 10-Q) | 21

ENERGY RECOVERY, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Note 11 — Stockholders’ Equity

Share Repurchase Programs

The Company’s Board, from time-to-time, has authorized share repurchase programs under which the Company may, at the

discretion of management, repurchase its outstanding common stock in the open market, or in privately negotiated transactions, in

compliance with applicable state and federal securities laws.  The timing and amounts of any purchase under the Company’s share

repurchase programs is based on market conditions and other factors including price, regulatory requirements, and capital availability.  The

Company accounts for stock repurchases under these programs using the cost method.  As of March 31, 2026, the Company has

repurchased 14,927,562 shares of its common stock at an aggregate cost of $176.8 million under all share repurchase programs.

February 2025 Authorization

On February 26, 2025, the Company announced that the Board authorized a share repurchase program under which the Company

may repurchase its outstanding common stock, at the discretion of management, for up to $30.0 million in aggregate cost, which includes

both the share value of the acquired common stock and the fees charged in connection with acquiring the common stock (the “February 2025

Authorization”). On August 19, 2025, the Company concluded all share repurchases under the February 2025 Authorization. Under the

February 2025 Authorization, the Company repurchased 2,183,648 shares at an aggregate cost of $30.0 million.

August 2025 Authorization

On August 6, 2025, the Board announced a share repurchase program under which the Company may repurchase its outstanding

common stock, at the discretion of management, for up to $25.0 million in aggregate cost, which includes both the share value of the

acquired common stock and the fees charged in connection with acquiring the common stock (the “August 2025 Authorization”). The August

2025 Authorization will expire in May 2026. The Company began to purchase under the August 2025 Authorization in August 2025.

The following table presents the share repurchase activities under the August 2025 Authorization as of March 31, 2026.

	Number of Shares Purchased	Average Price Paid per Share(1)	Plan Activity
			(In millions)
August 2025 Authorization			25.0
Repurchases under August 2025 Authorization	1,346,869	$12.07	(16.3)
Remaining amount under August 2025 Authorization			$8.7

(1)Excluding commissions

May 2026 Authorization

On May 6, 2026, the Company announced that the Board authorized a share repurchase program under which the Company may

repurchase its outstanding common stock, at the discretion of management, for up to $25.0 million in aggregate cost, which includes both the

share value of the acquired common stock and the fees charged in connection with acquiring the common stock (the “May 2026

Authorization”). The May 2026 Authorization will expire in April 2027. The Company expects to begin purchasing under the May 2026

Authorization in May 2026.

Energy Recovery, Inc. | Q1'2026 Quarterly Report (Form 10-Q) | 22

Item 2 — Management’s Discussion and Analysis of Financial Condition and Results of

Operations

Overview

Energy Recovery, Inc. (the “Company”, “Energy Recovery”, “we”, “our” and “us”) designs and manufactures solutions that make

industrial processes more efficient and sustainable.  Leveraging our pressure exchanger technology, which generates little to no emissions

when operating, we believe our solutions lower costs, save energy, reduce waste, and minimize emissions for companies across a variety of

commercial and industrial processes.  As the world coalesces around the urgent need to address climate change and its impacts, we are

helping companies reduce their energy consumption in their industrial processes, which in turn, reduces their carbon footprint.  We believe

that our customers do not have to sacrifice quality and cost savings for sustainability and we are committed to developing solutions that drive

long-term value – both financial and environmental.

The original product application of our technology, the PX® Pressure Exchanger® (“PX”) energy recovery device, was a major

contributor to the advancement of seawater reverse osmosis desalination (“SWRO”), significantly lowering the energy intensity and cost of

water production globally from SWRO.  Our pressure exchanger technology is being applied to the wastewater filtration market, such as

battery manufacturers, mining operations, municipalities, and other manufacturing plants that discharge wastewater with significant levels of

metals and pollutants.

Engineering, and research and development (“R&D”), have been, and remain, an essential part of our history, culture and corporate

strategy.  Since our formation, we have developed leading technology and engineering expertise through the continual evolution of our

pressure exchanger technology, which can enhance environmental sustainability and improve productivity by reducing waste and energy

consumption in high-pressure industrial fluid-flow systems.  This versatile technology works as a platform to build product applications and is

at the heart of many of our products.  In addition, we have engineered and developed ancillary devices, such as our hydraulic turbochargers

and circulation “booster” pumps, that complement our energy recovery devices.

Segments

Our reportable operating segments consist of the desalination, wastewater and emerging technologies segments.  These segments

are based on the industries in which the technology solutions are sold, the type of energy recovery device or other technology sold and the

related solution and service or, in the case of emerging technologies, where revenues from new and/or potential devices utilizing our

pressure exchanger technology can be brought to market.  Other factors for determining the reportable operating segments include the

manner in which our Chief Operating Decision Maker (“CODM”), our President and Chief Executive Officer, evaluates our performance

combined with the nature of the individual business activities.  In addition, our corporate operating expenses include expenditures in support

of the desalination, wastewater and emerging technologies segments.  We continue to monitor and review our segment reporting structure in

accordance with authoritative guidance to determine whether any changes have occurred that would impact our reportable segments.

During the three months ended March 31, 2026, we changed the composition of our reportable segments to better reflect how the

CODM manages the business. As a part of this change, the Water segment was separated into two segments, the Desalination segment and

the Wastewater segment. Prior periods have been recast to conform to the current year presentation.

Energy Recovery, Inc. | Q1'2026 Quarterly Report (Form 10-Q) | 23

Results of Operations

A discussion regarding our financial condition and results of operations for the three months ended March 31, 2026, compared to the

three months ended March 31, 2025, is presented below.

Revenue

As a significant portion of our revenue is derived from large project contract deliveries that are up to 36 months from contract date,

variability in revenue from quarter to quarter is typical, therefore year-on-year comparisons are not necessarily indicative of the trend for the

full year due to these variations.  There is no specific seasonality in our revenues to highlight.

Revenue by Channel Customers

	Three Months Ended March 31,
	2026		2025
	Revenue	% of Revenue	Revenue	% of Revenue	Change
	(In thousands, except percentages)
Original equipment manufacturer	$6,588	68%	$4,001	50%	$2,587	65%
Aftermarket	2,754	28%	4,028	50%	(1,274)	(32%)
Megaproject	364	4%	36	—%	328	911%
Total revenue	$9,706	100%	$8,065	100%	$1,641	20%

Revenue Attributable to Primary Geographical Markets by Segments

	Three Months Ended March 31,
	2026				2025
	Desalination	Wastewater	Emerging Technologies	Total	Desalination	Wastewater	Emerging Technologies	Total
	(In thousands)
Middle East	$2,506	$—	$77	$2,583	$2,014	$—	$1	$2,015
Africa	196	—	—	196	866	—	—	866
Other	6,205	601	121	6,927	4,879	305	—	5,184
Total revenue	$8,907	$601	$198	$9,706	$7,759	$305	$1	$8,065

Three months ended March 31, 2026, as compared to the three months ended March 31, 2025

The increase in original equipment manufacturer revenue of $2.6 million was due primarily to:

•Desalination: The increase in revenue of $2.1 million was due primarily to higher shipments of products to the Europe market and

the Middle East market, partially offset by lower shipments of products to the Africa market.

•Wastewater: The increase in revenue of $0.4 million was due primarily to higher shipments of products to the Asia market.

•Emerging Tech: The increase in revenue of $0.1 million was due primarily to higher shipments of products to the Americas

market.

The decrease in aftermarket revenue of $1.3 million was primarily due to lower shipments to the Asia and Middle East markets.

The increase in megaproject revenue of $0.3 million was due primarily to higher shipments to the Middle East market.

Concentration of Revenue

See Note 10, “Concentrations,” of the Notes to Condensed Consolidated Financial Statements in Part I, Item 1, “Financial Statements

(unaudited),” of this Quarterly Report on Form 10-Q (the “Notes”) for further discussion regarding our concentration of revenue.

Energy Recovery, Inc. | Q1'2026 Quarterly Report (Form 10-Q) | 24

Gross Profit and Gross Margin

Gross profit represents revenue less cost of revenue.  Cost of revenue consists primarily of raw materials, personnel costs (including

stock-based compensation), manufacturing overhead, warranty costs, and depreciation expense.

	Three Months Ended March 31,
	2026	2025	Change
(In thousands, except percentage and basis point)
Gross profit	$2,702	$4,458	$(1,756)
Gross margin	27.8%	55.3%	(2,750) bps

The decrease in gross profit and gross margin for the three months ended March 31, 2026, as compared to the prior year, was due

primarily to $1.6 million of restructuring charges booked to inventory associated with the wind down of the CO2 retail grocery business, as

well as increased costs related to product and channel mix, pricing, tariffs, and indirect manufacturing costs during the three months ended

March 31, 2026.

Operating Expenses

The total material changes of general and administrative (“G&A”), sales and marketing (“S&M”) and R&D operating expenses for the

three months ended March 31, 2026, as compared to the comparable period in the prior year, are discussed within the following overall

operating expenditures, and the segment and corporate operating expenses discussions below.

	Three Months Ended March 31,
	2026					2025
	Desalination	Wastewater	Emerging Technologies	Corporate	Total	Desalination	Wastewater	Emerging Technologies	Corporate	Total
	(In thousands)
General and administrative	$756	$981	$348	$4,370	$6,455	$845	$728	$755	$6,246	$8,574
Sales and marketing	2,485	1,163	858	613	5,119	2,108	1,037	1,270	491	4,906
Research and development	1,616	136	1,037	—	2,789	849	329	1,823	—	3,001
Restructuring charges	335	18	1,140	43	1,536	107	103	123	206	539
Impairment of goodwill	—	—	1,662	—	1,662	—	—	—	—	—
Total operating expenses	$5,192	$2,298	$5,045	$5,026	$17,561	$3,909	$2,197	$3,971	$6,943	$17,020

Three months ended March 31, 2026, as compared to the three months ended March 31, 2025

Overall Operating Expenditures.  Overall operating expenditures increased by $0.5 million, or 3.2%. This increase was due primarily

to impairment of goodwill and restructuring charges incurred as part of the wind down of the CO2 retail grocery business, partially offset by a

decrease in employee costs, as well as consulting costs and impairment costs associated with the sublease of the Katy, Texas lease incurred

during the three months ended March 31, 2025. 

Desalination Segment. Desalination segment related operating expenses increased by $1.3 million, or 32.8%.  This increase was due

primarily to higher employee costs, including stock-based compensation costs, and higher restructuring charges.

Wastewater Segment. Wastewater segment related operating expenses increased by $0.1 million, or 4.6%. This increase was due

primarily to higher consulting costs, partially offset by lower employee costs.

Energy Recovery, Inc. | Q1'2026 Quarterly Report (Form 10-Q) | 25

Emerging Technologies Segment. Emerging Technologies segment related operating expenses increased by $1.1 million, or 27.0%. 

This increase was due primarily to impairment of goodwill and restructuring charges incurred as part of the wind down of the CO2 retail

grocery business, partially offset by lower employee costs, including stock-based compensation costs.

Corporate Operating Expenses.  Corporate operating expenses decreased by $1.9 million, or (27.6%).  This decrease was primarily

due to lower employee costs, consulting costs and impairment costs associated with the sublease of the Katy, Texas lease incurred during

the three months ended March 31, 2025.

Restructuring Charges. During the first quarter of fiscal year 2026, we wound down operations of the CO2 retail grocery business

within our Emerging Technologies segment due to a fundamental change in the outlook of the business. We recorded a restructuring charge

of approximately $1.5 million during the three months ended March 31, 2026. The total restructuring charge recorded relates to severance

and benefits, including reemployment assistance, for 23 terminated employees.  In addition to the restructuring charges, the Company

incurred other related charges associated with the wind down of the CO2 retail grocery business, including excess and obsolescence

reserves taken on CO2 inventory of approximately $1.6 million and impairment of goodwill of approximately $1.7 million, which are included in

“Restructuring - inventory reserve” and “Impairment of goodwill” in the Condensed Consolidated Statements of Operations, respectively.

The restructuring plan was substantially complete by the end of the first quarter of fiscal year 2026 and the Company does not expect to incur

significant additional expenses related to the restructuring.

During the fourth quarter of fiscal year 2024, we implemented a restructuring plan which included reductions in our workforce in all

functions of the organization, primarily within the G&A function, in order to lower our operating cost structure, and to position the Company for

profitable growth.  We recorded total restructuring charges of approximately $2.8 million, of which $0.5 million was recorded during the three

months ended March 31, 2025. The total restructuring charge relates to severance and benefits, including reemployment assistance, for

38 terminated employees, which was approximately 15% of our workforce.  The implementation of the restructuring plan was complete as of

December 31, 2025. See Note 4, “Other Financial Information – Restructuring,” of the Notes for further discussion and disclosure on our

restructuring program. 

Other Income, Net

	Three Months Ended March 31,
	2026	2025
(In thousands)
Interest income	$725	$1,073
Other non-operating income, net	108	6
Total other income, net	$833	$1,079

The decrease in “Total other income, net” in the three months ended March 31, 2026, as compared to the comparable period in the

prior year, was primarily due to a decrease in short- and long-term investments.

Income Taxes

	Three Months Ended March 31,
	2026	2025
	(In thousands, except percentages)
Benefit from income taxes	$(1,775)	$(1,603)
Discrete items	(132)	52
Benefit from income taxes, excluding discrete items	$(1,907)	$(1,551)
Effective tax rate	12.7%	14.0%
Effective tax rate, excluding discrete items	13.6%	13.5%

The interim period tax benefit from income taxes is determined using an estimate of our annual effective tax rate, adjusted for discrete

items, if any, that arise during the period.  Each quarter, we update our estimate of the annual effective tax rate, and if the estimated annual

effective tax rate changes, we make a cumulative adjustment in such period.  The quarterly tax provision and estimate of our annual effective

tax rate are subject to variation due to several factors, including variability in accurately predicting our pre-tax income or loss and the mix of

jurisdictions to which they relate, the applicability of special tax regimes, and changes in how we do business.

Energy Recovery, Inc. | Q1'2026 Quarterly Report (Form 10-Q) | 26

For the three months ended March 31, 2026, the recognized benefit from income taxes resulted from the tax projection based on the

full year forecasted profit and included benefits related to the U.S. federal foreign-derived deduction eligible income (“FDDEI”) federal

research and development (“R&D”) tax credit, and certain permanent differences, such as non-deductible stock-based compensation.

For the three months ended March 31, 2025, the recognized benefit from income taxes resulted from the tax projection based on the

full year forecasted profit and included benefits related to the U.S. federal foreign-derived intangible income (“FDII”), federal R&D tax credit,

certain permanent differences, such as stock-based compensation shortfalls, and partial release of California valuation allowance.

The effective tax rate excluding discrete items for the three months ended March 31, 2026, as compared to the prior year, differed

primarily due to lower projected federal R&D tax credits, increased non-deductible officer stock-based compensation, largely offset by

projected higher U.S. FDDEI benefits.

Energy Recovery, Inc. | Q1'2026 Quarterly Report (Form 10-Q) | 27

Liquidity and Capital Resources

Overview

From time-to-time, management and our Board of Directors (the “Board”) review our liquidity and future cash needs and may make a

decision to (1) return capital to our shareholders through a share repurchase program or dividend payout; or (2) seek additional debt or equity

financing.  As of March 31, 2026, our principal sources of liquidity consisted of (i) unrestricted cash and cash equivalents of $50.1 million that

are held in cash accounts and invested in money market funds and U.S. treasury securities; (ii) investment-grade short-term and long-term

marketable debt instruments of $42.0 million that are primarily invested in U.S. treasury securities and corporate notes and bonds; and

(iii) accounts receivable, net of allowances, of $38.9 million.  As of March 31, 2026, there was unrestricted cash of $0.9 million held outside

the U.S.  We invest cash not needed for current operations predominantly in investment-grade, marketable debt instruments with the intent to

make such funds available for future operating purposes, as needed.  Although these securities are available for sale, we generally hold

these securities to maturity, and therefore, do not currently see a need to trade these securities in order to support our liquidity needs in the

foreseeable future.  We believe the risk of this portfolio to us is in the ability of the underlying companies or government agencies to cover

their obligations at maturity, not in our ability to trade these securities at a profit.  Based on current projections, we believe existing cash

balances and future cash inflows from this portfolio will meet our liquidity needs for at least the next 12 months.

Credit Agreement

We entered into a credit agreement with JPMorgan Chase Bank, N.A. on December 22, 2021 (as amended, the “Credit Agreement”). 

The Credit Agreement provides a committed revolving credit line of $50.0 million and includes both a revolving loan and a letters of credit

(“LCs”) component. The Credit Agreement was amended on January 21, 2026 to extend the expiration date from December 21, 2026 to

January 21, 2031. The maximum allowable LCs under the credit line component of the Credit Agreement is $30.0 million.  As of March 31,

2026, the Company was in compliance with all covenants under the Credit Agreement.

See Note 6, “Lines of Credit,” of the Notes for further discussion related to the Credit Agreement.

Share Repurchase Programs

The Board, from time-to-time, has authorized share repurchase programs under which we may, at our discretion, repurchase the

Company’s outstanding common stock in the open market, or in privately negotiated transactions, in compliance with applicable state and

federal securities laws.  The timing and amounts of any purchase under the share repurchase programs are based on market conditions and

other factors including price, regulatory requirements, and capital availability.  We account for stock repurchases under these programs using

the cost method.  As of March 31, 2026, we have cumulatively repurchased 14.9 million shares of the Company’s common stock at an

aggregate cost of $176.8 million under all share repurchase programs.  The following is a discussion of the current share repurchase

program during the three months ended March 31, 2026.  See Note 11, “Stockholders’ Equity – Share Repurchase Programs,” of the Notes

for further discussion related to share repurchase programs and a reconciliation of the latest share repurchase plan balance.

On August 6, 2025, we announced that the Board authorized a share repurchase program under which we may repurchase our

outstanding common stock, at the discretion of management, up to $25.0 million in aggregate cost, which includes both the share value of the

acquired common stock and the fees charged in connection with acquiring the common stock (the “August 2025 Authorization”).  We began

repurchasing our outstanding common stock under the August 2025 Authorization in August 2025. The August 2025 Authorization will expire

in May 2026. As of March 31, 2026, we have repurchased 1,346,869 shares of our common stock at an aggregate cost of approximately

$16.3 million of which 960,303 were purchased during the three months ended March 31, 2026 at an aggregate cost of approximately

$10.7 million.

On May 6, 2026, we announced that the Board authorized a share repurchase program under which we may repurchase our

outstanding common stock, at the discretion of management, for up to $25.0 million in aggregate cost, which includes both the share value of

the acquired common stock and the fees charged in connection with acquiring the common stock (the “May 2026 Authorization”).  We expect

to commence repurchasing our outstanding common stock under the May 2026 Authorization in May 2026. The May 2026 Authorization will

expire in April 2027.

Energy Recovery, Inc. | Q1'2026 Quarterly Report (Form 10-Q) | 28

Cash Flows

	Three Months Ended March 31,
	2026	2025	Change
	(In thousands)
Net cash provided by operating activities	$21,037	$10,678	$10,359
Net cash (used in) provided by investing activities	(7,606)	12,674	(20,280)
Net cash used in financing activities	(11,376)	(3,874)	(7,502)
Effect of exchange rate differences on cash and cash equivalents	(15)	33	(48)
Net change in cash, cash equivalents and restricted cash	$2,040	$19,511	$(17,471)

Cash Flows from Operating Activities

Net cash provided by operating activities is subject to the project driven, non-cyclical nature of our business.  Operating cash flow can

fluctuate significantly from reporting period to reporting period, due to the timing of receipts of large project orders.  Operating cash flow may

be negative in one reporting period and significantly positive in the next. Consequently, individual reporting period results and comparisons

may not necessarily indicate a significant trend, either positive or negative. 

The higher net cash provided by operating assets and liabilities for the three months ended March 31, 2026, as compared to the prior

year, was due primarily to the following factors: 

•Accounts receivable: an increase in cash provided due to an increase in collections related to revenues earned late in the fourth

quarter of 2025;

•Accrued liabilities: an increase in cash provided due to incentives and restructuring expenses paid out in 2025, partially offset by,

•Inventories: a decrease in cash provided due to cash used to build finished goods inventory in the first quarter of 2026.

Cash Flows from Investing Activities

Net cash (used in) provided by investing activities primarily relates to maturities and purchases of investment-grade marketable debt

instruments, and capital expenditures supporting our growth. The decrease in cash provided during the three months ended March 31, 2026,

as compared to the prior year, is primarily due to fewer maturities of marketable securities. We believe our investments in marketable debt

instruments are structured to preserve principal and liquidity while at the same time maximizing yields without significantly increasing risk. 

Cash Flows from Financing Activities

Net cash used in financing activities for the three months ended March 31, 2026 was higher as compared to the cash used in

financing activities in the prior year, due to higher repurchases of our common stock partially offset by lower net proceeds from the issuance

of common stock as compared to the prior year.

Energy Recovery, Inc. | Q1'2026 Quarterly Report (Form 10-Q) | 29

Liquidity and Capital Resource Requirements

We believe that our existing resources and cash generated from our operations will be sufficient to meet our anticipated capital

requirements for at least the next 12 months.  However, we may need to raise additional capital or incur additional indebtedness to continue

to fund our operations or to support acquisitions in the future and/or to fund investments in our latest technology arising from rapid market

adoption.  These needs could require us to seek additional equity or debt financing.  Our future capital requirements will depend on many

factors including the continuing market acceptance of our products, our rate of revenue growth, the timing of new product introductions, the

expansion of our R&D, manufacturing and S&M activities, and the timing and extent of our expansion into new geographic territories.  In

addition, we may enter into potential material investments in, or acquisitions of, complementary businesses, services or technologies in the

future which could also require us to seek additional equity or debt financing.  Should we need additional liquidity or capital funds, these funds

may not be available to us on favorable terms, or at all.

Recent Accounting Pronouncements

Refer to Note 1, “Description of Business and Significant Accounting Policies – Significant Accounting Policies,” of the Notes to

Condensed Consolidated Financial Statements in Part I, Item 1, “Financial Statements (unaudited),” of this Quarterly Report on Form 10-Q.

Energy Recovery, Inc. | Q1'2026 Quarterly Report (Form 10-Q) | 30

Item 3 — Quantitative and Qualitative Disclosures About Market Risk

Our exposure to market risk may be found primarily in two areas: foreign currency and interest rates.

Foreign Currency Risk

Our foreign currency exposures are due to fluctuations in exchange rates for the U.S. dollar (“USD”) versus the British pound, Saudi

riyal, Emirati dirham, European euro, Chinese yuan, Indian rupee and Canadian dollar.  Changes in currency exchange rates could adversely

affect our consolidated operating results or financial position.

Our revenue contracts have been denominated in the USD.  At times, our international customers may have difficulty obtaining

the USD to pay our receivables, thus increasing collection risk and potential bad debt expense.

In addition, we pay many vendors in foreign currency and, therefore, are subject to changes in foreign currency exchange rates.  Our

international sales and service operations incur expense that is denominated in foreign currencies.  This expense could be materially affected

by currency fluctuations.  Our international sales and services operations also maintain cash balances denominated in foreign currencies.  To

decrease the inherent risk associated with translation of foreign cash balances into our reporting currency, we do not maintain excess cash

balances in foreign currencies.

We have not hedged our exposure to changes in foreign currency exchange rates because expenses in foreign currencies have been

insignificant to date and exchange rate fluctuations have had little impact on our operating results and cash flows.  In addition, we do not

have any exposure to the Russian ruble.

Interest Rate and Credit Risks

The primary objective of our investment activities is to preserve principal and liquidity while at the same time maximizing yields without

significantly increasing risk.  We invest primarily in investment-grade short-term and long-term marketable debt instruments that are subject

to counter-party credit risk.  To minimize this risk, we invest pursuant to an investment policy approved by the Board.  The policy mandates

high credit rating requirements and restricts our exposure to any single corporate issuer by imposing concentration limits.

As of March 31, 2026, our investment portfolio of $42.0 million, in investment-grade marketable debt instruments, such as U.S.

treasury securities, and corporate notes and bonds, are classified as either short-term and/or long-term investments on our Condensed

Consolidated Balance Sheets.  These investments are subject to interest rate fluctuations and a decrease in market value to the extent

interest rates increase.  To minimize the exposure due to adverse shifts in interest rates, we maintain investments with a weighted average

maturity of approximately six months.  As of March 31, 2026, a hypothetical 1% increase in interest rates would have resulted in a less than

$0.2 million decrease in the fair value of our investments in marketable debt instruments as of such date.

Energy Recovery, Inc. | Q1'2026 Quarterly Report (Form 10-Q) | 31

Item 4 — Controls and Procedures

Evaluation of Disclosure Controls and Procedures

Our management, with the participation of our President and Chief Executive Officer and our Chief Financial Officer, have evaluated

the effectiveness of our disclosure controls and procedures as defined in Rule 13a-15(e) of the Securities Exchange Act of 1934 as of the

end of the period covered by this report.

Based on that evaluation, our President and Chief Executive Officer and our Chief Financial Officer have concluded that, as of

March 31, 2026, our disclosure controls and procedures were effective.

Changes in Internal Controls

There were no changes in our internal control over financial reporting during the period covered by this report that have materially

affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Energy Recovery, Inc. | Q1'2026 Quarterly Report (Form 10-Q) | 32

PART II — OTHER INFORMATION

Item 1 — Legal Proceedings

We have been, and may be from time to time, involved in legal proceedings or subject to claims incident to the ordinary course of

business.  We are not presently a party to any legal proceedings that we believe are likely to have a material adverse effect on our business,

financial condition, or operating results.  Regardless of the outcome, such proceedings or claims can have an adverse impact on us because

of defense and settlement costs, diversion of resources and other factors, and there can be no assurances that favorable outcomes will be

obtained.

Item 1A — Risk Factors

Except as noted below, there have been no material changes in our risk factors from those disclosed in Part I, Item 1A, “Risk Factors,”

in the 2025 Annual Report.

Our Water segment revenues largely depend on the construction of new large-scale desalination plants and the retrofit of

existing desalination plants, and as a result, our operating results have historically experienced, and may continue to experience,

significant variability due to volatility in capital spending, availability of project financing, project timing, execution, war or other

hostilities and other factors affecting the broader water desalination industry.

We currently derive the majority of our Water segment revenues from sales of energy recovery products and services used in newly

constructed, large-scale desalination plants and the retrofit of existing desalination plants, particularly in dry or drought-ridden regions of the

world.  The demand for our products used in the Water segment may decrease if the construction of these large-scale desalination plants or

the retrofit of existing plants declines for any reason, including, any global or regional economic downturns, worsening global or regional

political conflicts, war or other hostilities, such as the 2026 conflict in Iran and escalating tensions in the Middle East, worsening regional

conditions, changing government priorities, or the impact of any global or regional conflicts. 

Other factors that could affect the number and capacity of large-scale desalination plants built or the timing of their completion,

include the availability of required engineering and design resources; availability of credit and other forms of financing; the health of the global

economy; inflation rates; changes in government regulation, permitting requirements, or priorities; and reduced capital spending for water

desalination solutions.  Each of these factors could result in reduced or uneven demand for our products.  Pronounced variability, complete

cancellations or delays in the construction of such plants or reductions in spending for desalination in general could negatively impact our

Water segment sales, which in turn could have an adverse effect on our entire business, financial condition, or results of operations, and

make it difficult for us to accurately forecast our future sales.

A sustained downturn in the economy or global unrest could impact the future of new, and the retrofit of existing,

desalination plants, and the treatment of various wastewater verticals, which could result in decreased demand for our water

products and services.

The demand for our water products and services depends primarily on the continued construction of new large-scale desalination

plants, the retrofit of existing plants, and the construction of wastewater treatment facilities, particularly in the countries that are part of the

Gulf Cooperation Council, China, Taiwan and India.  Weak economic conditions, global uncertainty including the continuing conflicts in

Ukraine, the 2026 conflict in Iran and escalating conflicts in the Middle East, as well as the impact of increased inflation resulting from such

conflicts may have a negative economic impact on these and other countries, which may impact the levels of spending on, timing of, delays

to, and availability of, project financing for new desalination and retrofit plant projects.  The inability of our customers to secure credit or

financing for these projects, may result in the postponement or cancellation of these projects.  In addition, the change in government priorities

and/or their reduction in spending for water treatment projects could result in decreased demand for our products and services, which could

have an adverse effect on our business, financial condition or results of operations.

Uncertainty in the global geopolitical landscape and macro-economic environment may impact our operations outside the

U.S., including in the Middle East where many of our water megaprojects are planned.

Energy Recovery, Inc. | Q1'2026 Quarterly Report (Form 10-Q) | 33

We conduct our business on a global basis.  Our products are sold in numerous countries worldwide, with a large percentage of our

sales generated outside the U.S., specifically in the Middle East and Africa, and Asian markets which provide a significant portion of our total

revenue.  Therefore, we are exposed to, and impacted by, global macroeconomic factors, U.S. and foreign government policies, and foreign

exchange fluctuations.  There is uncertainty surrounding macroeconomic factors in the U.S. and globally characterized by the supply chain

environment, inflationary pressure, rising interest rates, and labor shortages.  These global macroeconomic factors, coupled with the U.S.

political climate, political unrest internationally, and conflicts in Europe and the Middle East, such as the 2026 conflict in Iran and Iran’s

response to attacks by the United States and Israel, have created global economic and political uncertainty, and have impacted demand for

certain of our products.  While the impact and longevity of these factors remain uncertain, we are constantly evaluating the extent to which

these factors will impact our business, financial condition, or results of operations.  Over the long-term, demand for our energy recovery

devices could correlate to global macroeconomic and geopolitical factors.  Any disruption to the economic factors and regulations in these

regions, which remain uncertain, may adversely affect our results of operations and financial condition.

In addition, there is uncertainty as to the position the U.S. will take with respect to world affairs.  This uncertainty may include such

issues as the U.S. support for existing treaty and trade relationships with other countries, including, notably, China, Mexico and Canada.  This

uncertainty, together with other recent key global events, such as currency control regulations and tariff regimes, ongoing terrorist activity,

and hostilities in the Middle East, may adversely impact (i) the ability or willingness of non-U.S. companies to transact business with U.S.

companies, including with us; (ii) our ability to transact business in other countries, including the Middle East, where many of the water

megaprojects are planned; (iii) regulation and trade agreements affecting U.S. companies; (iv) global stock markets (including The NASDAQ

Global Select Market Composite on which our common shares are traded); and (v) general global economic conditions.  Furthermore, the

conflicts in Europe and the Middle East have resulted in worldwide geopolitical and macroeconomic uncertainty, and we cannot predict how

these conflicts will evolve or their timing.  If these conflicts continue for a significant time or further expand to other countries or regions, they

could have additional adverse effects on macroeconomic conditions that may have a direct adverse impact on our business and/or our supply

chain, business partners or customers in the broader region.  All of these factors are outside of our control, but may nonetheless cause us to

adjust our strategy in order to compete effectively in global markets.

Item 2 — Unregistered Sales of Equity Securities and Use of Proceeds

Unregistered Sales of Equity Securities

None.

Purchases of Equity Securities by the Issuer and Affiliated Purchasers

On August 6, 2025, we announced a share repurchase program (the “August 2025 Authorization”).  The following table summarizes

the stock repurchase activity under the August 2025 Authorization during the three months ended March 31, 2026.

Period	Total Number of Shares Purchased	Average Price Paid per Share(1)	Total Number of Shares Purchased as Part of Publicly Announced Program	Maximum Number of Shares or Approximate Dollar Value(1) That May Yet to be Purchased Under the Program
				(In thousands)
January 1 – January 31, 2026	109,300	$14.28	109,300	$17,820
February 1 – February 28, 2026	76,153	$14.66	76,153	$16,703
March 1 – March 31, 2026	774,850	$10.30	774,850	$8,721

(1)Including commissions

Item 3 — Defaults Upon Senior Securities

None.

Energy Recovery, Inc. | Q1'2026 Quarterly Report (Form 10-Q) | 34

Item 4 — Mine Safety Disclosures

Not applicable.

Item 5 — Other Information

10b5-1 Plans

During the three months ended March 31, 2026, no director or officer (within the meaning of Rule 16a-1(f) under the Securities

Exchange Act of 1934, as amended) has adopted or terminated a Rule 10b5-1 trading arrangement (as defined in Item 408 of Regulation S-

K).

Energy Recovery, Inc. | Q1'2026 Quarterly Report (Form 10-Q) | 35

Item 6 — Exhibits

A list of exhibits filed or furnished with this report or incorporated herein by reference is found in the Exhibit Index below.

Exhibit Number	Exhibit Description
10.1	Third Amendment to the Credit Agreement by and between Energy Recovery, Inc. as Borrower, and JPMorgan Chase Bank N.A. as Lender dated January 21, 2026
31.1*	Certification of Principal Executive Officer, pursuant to Exchange Act Rule 13a-14(a) or 15d-14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2*	Certification of Principal Financial Officer, pursuant to Exchange Act Rule 13a-14(a) or 15d-14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1**	Certification of Principal Executive Officer and Principal Financial Officer, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101	Inline XBRL Document Set for the consolidated financial statements and accompanying notes in Part I, “Financial Information” of this Quarterly Report on Form 10-Q.
104	Inline XBRL for the cover page of this Quarterly Report on Form 10-Q, included in the Exhibit 101 Inline XBRL Document Set.

*Filed herewith.

**The certification furnished in Exhibit 32.1 is not deemed “filed” for purposes of Section 18 of the Exchange Act, or otherwise subject to the liability of that

section, nor shall they be deemed incorporated by reference into any filing under the Securities Act or the Exchange Act.

Energy Recovery, Inc. | Q1'2026 Quarterly Report (Form 10-Q) | 36

    SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its

behalf by the undersigned thereunto duly authorized.

			ENERGY RECOVERY, INC.
Date:	May 6, 2026	By:	/s/ DAVID W. MOON
			David W. Moon
			President and Chief Executive Officer
			(Principal Executive Officer)
Date:	May 6, 2026	By:	/s/ MICHAEL S. MANCINI
			Michael S. Mancini
			Chief Financial Officer
			(Principal Financial Officer)

EX-10.1

Exhibit 10.1

THIRD AMENDMENT TO CREDIT AGREEMENT

THIS THIRD AMENDMENT TO CREDIT AGREEMENT (this “Amendment”), dated as of January 21, 2026, is entered into by and among ENERGY RECOVERY, INC., a Delaware corporation (the “Company”, and together with any other Person that becomes a Borrower under the Credit Agreement as defined below) from time to time, each individually, a “Borrower”, and collectively, jointly and severally, the “Borrowers”), the other Loan Parties party hereto, and JPMORGAN CHASE BANK, N.A., as Lender (the “Lender”). Unless otherwise specified herein, capitalized terms used in this Amendment shall have the meanings ascribed to them in the Credit Agreement, as applicable, in each case, as hereinafter defined.

WHEREAS, the Company, the other Loan Parties party thereto from time to time and the Lender are parties to that certain Credit Agreement, dated as of December 22, 2021 (as it may be amended, restated, supplemented or otherwise modified from time to time prior to the date hereof, the “Existing Credit Agreement”; and the Existing Credit Agreement, as amended by this Amendment, the “Credit Agreement”);

WHEREAS, the Company has requested that Lender extend the maturity date of the revolving credit facility and to otherwise amend the Existing Credit Agreement as set forth herein; and

WHEREAS, on the terms and conditions set forth herein, the Lender has agreed to amend the Existing Credit Agreement as set forth herein.

NOW, THEREFORE, for and in consideration of the premises and mutual agreements herein contained and for the purposes of setting forth the terms and conditions of this Amendment and for other valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto, intending to be bound, hereby agree as follows:

1.Amendments to Credit Agreement. Subject to the terms and conditions of this Amendment, (a) the Existing Credit Agreement (exclusive of Schedules), is hereby amended in accordance with Annex I hereto by deleting the stricken text (indicated textually in the same manner as the following example: stricken text) and by inserting the double-underlined text (indicated textually in the same manner as the following example: double underlined text), in each case in the place where such text appears therein and (b) the Exhibits to the Credit Agreement are amended and restated in their entirety as set forth in Annex II attached hereto.

2.Conditions Precedent to Effectiveness. This Amendment shall become effective upon the satisfaction of each of the following conditions precedent:

(a)the Lender (or its counsel) shall have received a counterpart of this Amendment, signed by the Company, the other Loan Parties and the Lender;

(b)the Lender (or its counsel) shall have received (i) a certificate of each Loan Party, dated the date hereof and executed by its Secretary or Assistant Secretary or other officer of such Loan Party sufficiently familiar with the books and records of such Loan Party, which shall (A) certify the resolutions of its Board of Directors, members or other body authorizing the execution, delivery and performance of the Loan Documents to which it is a party, (B) identify by name and title and bear the signatures of the officers of such Loan Party authorized to sign the Loan Documents to which it is a party and, in the case of a Borrower, its Financial Officers, and (C) contain appropriate attachments, including the charter, articles or certificate of organization or incorporation of each Loan Party certified by the relevant authority of the jurisdiction of organization of such Loan Party and a true and correct copy of its bylaws or operating,

1755024456

management or partnership agreement, or other organizational or governing documents, and (ii) a good standing certificate for each Loan Party from its jurisdiction of organization;

(c)the Lender shall have received the results of search reports in respect of the intellectual property of the Loan Parties and results of a recent lien search in the jurisdiction of organization of each Loan Party and each jurisdiction where assets of the Loan Parties are located, and such search shall reveal no Liens on any of the assets of the Loan Parties except for liens permitted by Section 6.02 of the Credit Agreement; and

(d)the Lender shall have received all reasonable and documented out-of-pocket fees required to be paid under the Loan Documents, and all expenses required to be reimbursed for which invoices have been presented (including the reasonable and documented out-of-pocket fees and expenses of legal counsel), on or before the date hereof.

3.Representations. Each Loan Party hereby represents and warrants to the Lender that: (a) the execution and delivery of this Amendment and the performance of its obligations hereunder are within each Loan Party’s corporate or other organizational powers and have been duly authorized by all necessary corporate or other organizational actions and, if required, actions by equity holders, (b) no Default or Event of Default exists both before and after giving effect to this Amendment, (c) this Amendment has been duly executed and delivered by such Loan Party and constitutes a legal, valid and binding obligation of such Loan Party, enforceable in accordance with its terms, subject to applicable bankruptcy, insolvency, reorganization, moratorium or other laws affecting creditors’ rights generally and subject to general principles of equity, regardless of whether considered in a proceeding in equity or at law, (d) all Liens created under the Loan Documents continue to be perfected and have priority over all other Liens on the Collateral except in the case of Liens permitted under Section 6.02 of the Credit Agreement, to the extent any such Liens would have priority over the Liens in favor of the Lender pursuant to any applicable law, (e) the representations and warranties of the Loan Parties set forth in the Credit Agreement and the other Loan Documents are true and correct in all material respects (it being understood and agreed that any representation or warranty which by its terms is made as of a specified date shall be required to be true and correct in all material respects only as of such specified date, and that any representation or warranty which is subject to any materiality qualifier shall be required to be true and correct in all respects); and (f) the execution and delivery of this Amendment and the performance of its obligations hereunder (i) do not require any consent or approval of, registration or filing with, or any other action by, any Governmental Authority, except such as have been obtained or made and are in full force and effect and except for filings necessary to perfect Liens created pursuant to the Loan Documents, (ii) will not violate any Requirement of Law applicable to any Loan Party or any Subsidiary, (iii) will not violate or result in a default under any indenture, agreement or other instrument binding upon any Loan Party or any Subsidiary or the assets of any Loan Party or any Subsidiary, or give rise to a right thereunder to require any payment to be made by any Loan Party or any Subsidiary, except for such violations or defaults that would not reasonably be expected to have a Material Adverse Effect, and (iv) will not result in the creation or imposition of, or other requirement to create, any Lien on any asset of any Loan Party or any Subsidiary, except Liens permitted pursuant to Section 6.02 of the Credit Agreement.

4.Ratification. Except as expressly modified by this Amendment, all of the terms, provisions and conditions of the Credit Agreement, as heretofore amended, shall remain unchanged and in full force and effect. Each Loan Party, as debtor, grantor, pledgor, guarantor, assignor, or in any other similar capacity in which such Person grants liens or security interests in its property or otherwise acts as accommodation party or guarantor, as the case may be, hereby (i) ratifies and reaffirms all of its payment and performance obligations, contingent or otherwise, under the Credit Agreement and each other Loan Document to which it is a party (after giving effect hereto) and (ii) to the extent such Person granted liens on or security interests in any of its property pursuant to any Loan Documents as security for or otherwise guaranteed the Obligations under or with respect to the Loan Documents, ratifies and reaffirms such guarantee and grant of security interests and liens and confirms and agrees that such security interests and liens hereafter secure all of the Obligations as amended hereby. Except as herein specifically agreed, the Credit Agreement and each other Loan Document are hereby ratified and confirmed and shall remain in full force and effect according to their terms. Except as specifically set forth herein, the execution, delivery and effectiveness of this Amendment shall not operate as a waiver of any right, power, privilege or remedy of the Lender under the Credit Agreement or any of the other Loan Documents, or constitute a

2

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waiver of any provision of the Credit Agreement or any of the other Loan Documents. This Amendment shall not constitute a course of dealing with the Lender at variance with the Credit Agreement or the other Loan Documents such as to require further notice by such Person to require strict compliance with the terms of the Credit Agreement and the other Loan Documents in the future. Each Loan Party acknowledges and expressly agrees that the Lender reserves the right to, and does in fact, require strict compliance with all terms and provisions of the Credit Agreement (as expressly modified by this Amendment) and the other Loan Documents.

5.Miscellaneous.

(a)Governing Law. This Amendment shall be governed by and construed in accordance with the internal laws of the State of New York, but giving effect to federal laws applicable to national banks.

(b)WAIVER OF JURY TRIAL.EACH PARTY HERETO HEREBY WAIVES, TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, ANY RIGHT IT MAY HAVE TO A TRIAL BY JURY IN ANY LEGAL PROCEEDING DIRECTLY OR INDIRECTLY ARISING OUT OF OR RELATING TO THIS AMENDMENT, ANY OTHER LOAN DOCUMENT OR THE TRANSACTIONS CONTEMPLATED HEREBY OR THEREBY (WHETHER BASED ON CONTRACT, TORT OR ANY OTHER THEORY). EACH PARTY HERETO (A) CERTIFIES THAT NO REPRESENTATIVE OR OTHER AGENT (INCLUDING ANY ATTORNEY) OF ANY OTHER PARTY HAS REPRESENTED, EXPRESSLY OR OTHERWISE, THAT SUCH OTHER PARTY WOULD NOT, IN THE EVENT OF LITIGATION, SEEK TO ENFORCE THE FOREGOING WAIVER AND (B) ACKNOWLEDGES THAT IT AND THE OTHER PARTIES HERETO HAVE BEEN INDUCED TO ENTER INTO THIS AMENDMENT BY, AMONG OTHER THINGS, THE MUTUAL WAIVERS AND CERTIFICATIONS IN THIS SECTION.

(c)Counterparts; Effectiveness. This Amendment may be executed in counterparts (and by different parties hereto on different counterparts), each of which shall constitute an original, but all of which when taken together shall constitute a single contract. This Amendment shall become effective as provided in Section 3 hereof and when the Lender shall have received counterparts hereof which, when taken together, bear the signatures of each of the other parties hereto, and thereafter shall be binding upon and inure to the benefit of the parties hereto and their respective successors and assigns. Delivery of an executed counterpart of a signature page of this Amendment that is an Electronic Signature transmitted by telecopy, emailed pdf. or any other electronic means that reproduces an image of an actual executed signature page shall be effective as delivery of a manually executed counterpart of this Amendment, such other Loan Document or such Ancillary Document, as applicable. The words “execution,” “signed,” “signature,” “delivery,” and words of like import in or relating to this Amendment, such other Loan Document or such Ancillary Document, as applicable shall be deemed to include Electronic Signatures, deliveries or the keeping of records in any electronic form (including deliveries by telecopy, emailed pdf. or any other electronic means that reproduces an image of an actual executed signature page), each of which shall be of the same legal effect, validity or enforceability as a manually executed signature, physical delivery thereof or the use of a paper-based recordkeeping system, as the case may be to the extent and as provided for in any applicable law, including the Federal Electronic Signatures in Global and National Commerce Act, the New York State Electronic Signatures and Records Act, or any other similar state laws based on the Uniform Electronic Transactions Act.

(d)Entire Agreement. This Amendment, the other Loan Documents and any separate letter agreements with respect to fees payable to the Lender constitute the entire contract among the parties relating to the subject matter hereof and supersede any and all previous agreements and understandings, oral or written, relating to the subject matter hereof.

(e)Severability of Provisions. Any provision of this Amendment held to be invalid, illegal or unenforceable in any jurisdiction shall, as to such jurisdiction, be ineffective to the extent of such invalidity, illegality or unenforceability without affecting the validity, legality and enforceability of the remaining provisions thereof; and the invalidity of a particular provision in a particular jurisdiction shall not invalidate such provision in any other jurisdiction.

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(f)Successors and Assigns. The provisions of this Amendment shall be binding upon and inure to the benefit of the parties hereto and their respective successors and assigns permitted under the Credit Agreement.

(g)Headings. Article and Section headings used herein are for convenience of reference only, are not part of this Amendment and shall not affect the construction of, or be taken into consideration in interpreting, this Amendment.

(h)Incorporation. This Amendment shall form a part of the Credit Agreement, and all references to the Credit Agreement shall mean that document as hereby modified. Upon the effectiveness of this Amendment, each reference in the Credit Agreement or any other Loan Document to “this Agreement”, “hereunder”, “hereof”, “herein” or words of similar import shall mean and be a reference to the Credit Agreement as amended hereby.

(i)Loan Document. This Amendment shall constitute a Loan Document.

(j)No Prejudice; No Impairment. This Amendment shall not prejudice, limit, restrict or impair any rights, privileges, powers or remedies of the Lender under the Credit Agreement or any other Loan Documents as hereby amended. The Lender reserves, without limitation, all rights which the Lender has now or in the future against any guarantor or endorser of the Obligations.

[Signatures Immediately Follow]

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IN WITNESS WHEREOF, the undersigned have executed this Third Amendment to Credit Agreement as of the date first written above.

BORROWER:

ENERGY RECOVERY, INC.

By:

Name:    

Title:    

Signature Page to Third Amendment to Credit Agreement

1755024456

Signature Page to Third Amendment to Credit Agreement

1755024456

LENDER:

JPMORGAN CHASE BANK, N.A., as the Lender

By:

    Name:

    Title:

Signature Page to Third Amendment to Credit Agreement

1755024456

Annex I

(See attached)

1755024456

Annex II

(See attached)

1755024456

Signature Page to Third Amendment to Credit Agreement

1755024456

EX-31.1

Exhibit 31.1

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER

PURSUANT TO EXCHANGE ACT RULE 13a-14(a) OR 15d-14(a), AS ADOPTED PURSUANT TO

SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, David W. Moon, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of Energy Recovery, Inc. for the period ended March 31, 2026;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.I am responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a.Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b.Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c.Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures as of the end of the period covered by this report based on such evaluation; and

d.Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.I have disclosed, based on my most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s Board of Directors (or persons performing the equivalent functions):

a.All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b.Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: May 6, 2026	/s/ DAVID W. MOON
	Name:	David W. Moon
	Title:	President and Chief Executive Officer
		(Principal Executive Officer)

EX-31.2

Exhibit 31.2

CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER

PURSUANT TO EXCHANGE ACT RULE 13a-14(a) OR 15d-14(a), AS ADOPTED PURSUANT TO

SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Michael S. Mancini, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of Energy Recovery, Inc. for the period ended March 31, 2026;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.I am responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a.Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b.Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c.Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures as of the end of the period covered by this report based on such evaluation; and

d.Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.I have disclosed, based on my most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s Board of Directors (or persons performing the equivalent functions):

a.All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b.Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: May 6, 2026	/s/ MICHAEL S. MANCINI
	Name:	Michael S. Mancini
	Title:	Chief Financial Officer
		(Principal Financial Officer)

EX-32.1

Exhibit 32.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER AND CHIEF FINANCIAL OFFICER,

PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE

SARBANES-OXLEY ACT OF 2002*

Pursuant to the requirement set forth in Rule 13a-14(b) of the Securities and Exchange Act of 1934, as amended (the “Exchange Act”), and Section 1350 of Chapter 63 of Title 18 of the United States Code, David W. Moon, President and Chief Executive Officer of Energy Recovery, Inc., and Michael S. Mancini, Chief Financial Officer of Energy Recovery, Inc., each hereby certify that, to the best of his knowledge:

1.    The Company’s Quarterly Report on Form 10-Q for the period ended March 31, 2026, to which this Certification is attached as Exhibit 32.1 (the “Quarterly Report”), fully complies with the requirements of Section 13(a) or Section 15(d) of the Exchange Act, and

2.    The information contained in the Quarterly Report fairly presents, in all material respects, the financial condition of the Company at the end of the period covered by the Quarterly Report and results of operations of the Company for the period covered by the Quarterly Report.

IN WITNESS WHEREOF, the undersigned has set his hand hereto:

Date: May 6, 2026	/s/ DAVID W. MOON
	David W. Moon
	President and Chief Executive Officer
Date: May 6, 2026	/s/ MICHAEL S. MANCINI
	Michael S. Mancini
	Chief Financial Officer

*    This certification accompanies the Form 10-Q to which it relates, is not deemed filed with the Securities and Exchange Commission and is not to be incorporated by reference into any filing of Energy Recovery, Inc. under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended (whether made before or after the date of the Form 10-Q), irrespective of any general incorporation language contained in such filing.

XML

Cover Page - shares	3 Months Ended
	Mar. 31, 2026	Apr. 30, 2026
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2026
Document Transition Report	false
Entity File Number	001-34112
Entity Registrant Name	Energy Recovery, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	01-0616867
Entity Address, Address Line One	1717 Doolittle Drive
Entity Address, City or Town	San Leandro
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94577
City Area Code	510
Local Phone Number	483-7370
Title of 12(b) Security	Common Stock, $0.001 par value
Trading Symbol	ERII
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding (in shares)		51,545,259
Entity Central Index Key	0001421517
Document Fiscal Year Focus	2026
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	Q1
Amendment Flag	false

XML

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Current assets:
Cash and cash equivalents	$ 50,116	$ 48,076
Short-term investments	36,035	27,173
Accounts receivable, net	38,941	76,639
Inventories, net	30,886	24,260
Prepaid expenses and other assets	5,084	5,063
Total current assets	161,062	181,211
Long-term investments	5,991	8,034
Deferred tax assets, net	10,115	8,267
Property and equipment, net	12,761	12,934
Operating lease, right of use asset	7,194	7,701
Goodwill	11,128	12,790
Other assets, non-current	737	577
Total assets	208,988	231,514
Current liabilities:
Accounts payable	2,790	2,114
Accrued expenses and other liabilities	10,890	11,670
Lease liabilities	2,591	2,531
Contract liabilities	1,080	1,039
Total current liabilities	17,351	17,354
Lease liabilities, non-current	6,254	6,898
Other liabilities, non-current	1,098	1,070
Total liabilities	24,703	25,322
Commitments and contingencies (Note 7)
Stockholders’ equity:
Common stock	67	67
Additional paid-in capital	245,663	244,397
Accumulated other comprehensive loss	(285)	(94)
Treasury stock	(177,577)	(166,846)
Retained earnings	116,417	128,668
Total stockholders’ equity	184,285	206,192
Total liabilities and stockholders’ equity	$ 208,988	$ 231,514

XML

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Income Statement [Abstract]
Revenue	$ 9,706	$ 8,065
Cost of revenue	5,372	3,607
Restructuring - inventory reserve	1,632	0
Gross profit	2,702	4,458
Operating expenses:
General and administrative	6,455	8,574
Sales and marketing	5,119	4,906
Research and development	2,789	3,001
Restructuring charges	1,536	539
Impairment of goodwill	1,662	0
Total operating expenses	17,561	17,020
Loss from operations	(14,859)	(12,562)
Other income:
Interest income	725	1,073
Other non-operating income, net	108	6
Total other income, net	833	1,079
Loss before income taxes	(14,026)	(11,483)
Benefit from income taxes	(1,775)	(1,603)
Net loss	$ (12,251)	$ (9,880)
Net loss per share:
Basic (in dollars per share)	$ (0.23)	$ (0.18)
Diluted (in dollars per share)	$ (0.23)	$ (0.18)
Number of shares used in per share calculations:
Basic (in shares)	52,660	54,902
Diluted (in shares)	52,660	54,902

XML

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Statement of Comprehensive Income [Abstract]
Net loss	$ (12,251)	$ (9,880)
Other comprehensive loss, net of tax
Foreign currency translation adjustments	(123)	(16)
Unrealized loss on investments	(68)	(7)
Total other comprehensive loss, net of tax	(191)	(23)
Comprehensive loss	$ (12,442)	$ (9,903)

XML

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($) $ in Thousands	Total	Common stock	Additional paid-in capital	Accumulated other comprehensive (loss) income	Treasury stock	Retained earnings
Beginning balance at Dec. 31, 2024		$ 66	$ 235,010	$ 98	$ (130,870)	$ 105,706
Increase (Decrease) in Stockholders' Equity
Issuance of common stock		1	1,091
Shares held for tax withholdings			(476)
Stock-based compensation			1,925
Foreign currency translation adjustments				(16)
Unrealized loss on investments				(7)
Common stock repurchased					(4,535)
Net loss	$ (9,880)					(9,880)
Total other comprehensive loss, net of tax	(23)			(23)
Ending balance at Mar. 31, 2025	$ 198,113	$ 67	237,550	75	$ (135,405)	95,826
Beginning balance, common stock, issued (in shares) at Dec. 31, 2024		66,182,906
Beginning balance, treasury stock (in shares) at Dec. 31, 2024					11,397,045
Common stock outstanding, Beginning balance (in shares) at Dec. 31, 2024		54,785,861
Increase (Decrease) in Stockholders' Equity
Issuance of common stock (in shares)		350,146
Common stock repurchased (in shares)					279,295
Common stock repurchased (in shares)		(279,295)
Ending balance, common stock issued (in shares) at Mar. 31, 2025		66,533,052
Ending balance, treasury stock (in shares) at Mar. 31, 2025					11,676,340
Common stock outstanding, Ending balance (in shares) at Mar. 31, 2025	54,856,712
Beginning balance at Dec. 31, 2025	$ 206,192	$ 67	244,397	(94)	$ (166,846)	128,668
Increase (Decrease) in Stockholders' Equity
Issuance of common stock		0	0
Shares held for tax withholdings			(682)
Stock-based compensation			1,948
Foreign currency translation adjustments				(123)
Unrealized loss on investments				(68)
Common stock repurchased					(10,731)
Net loss	(12,251)					(12,251)
Total other comprehensive loss, net of tax	(191)			(191)
Ending balance at Mar. 31, 2026	$ 184,285	$ 67	$ 245,663	$ (285)	$ (177,577)	$ 116,417
Beginning balance, common stock, issued (in shares) at Dec. 31, 2025		66,774,081
Beginning balance, treasury stock (in shares) at Dec. 31, 2025					13,967,259
Common stock outstanding, Beginning balance (in shares) at Dec. 31, 2025		52,806,822
Increase (Decrease) in Stockholders' Equity
Issuance of common stock (in shares)		236,340
Common stock repurchased (in shares)					960,303
Common stock repurchased (in shares)		(960,303)
Ending balance, common stock issued (in shares) at Mar. 31, 2026		67,010,421
Ending balance, treasury stock (in shares) at Mar. 31, 2026					14,927,562
Common stock outstanding, Ending balance (in shares) at Mar. 31, 2026	52,082,859
Increase (Decrease) in Stockholders' Equity
Common stock, shares authorized (in shares)	200,000,000

XML

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Cash flows from operating activities:
Net loss	$ (12,251)	$ (9,880)
Adjustments to reconcile net loss to cash provided by operating activities
Stock-based compensation	1,963	1,963
Depreciation and amortization	978	962
Accretion (amortization) of discounts (premiums) on investments	(82)	(231)
Deferred income taxes	(1,848)	(1,641)
Impairment of long-lived assets	0	353
Impairment of goodwill	1,662	0
Restructuring - inventory reserve	1,632	0
Other non-cash adjustments	(36)	21
Changes in operating assets and liabilities:
Accounts receivable, net	37,698	31,677
Contract assets	(54)	378
Inventories, net	(8,400)	(7,645)
Prepaid and other assets	38	(37)
Accounts payable	561	176
Accrued expenses and other liabilities	(865)	(6,248)
Contract liabilities	41	830
Net cash provided by operating activities	21,037	10,678
Cash flows from investing activities:
Maturities of marketable securities	10,950	27,224
Purchases of marketable securities	(17,755)	(14,369)
Capital expenditures	(814)	(191)
Proceeds from sales of fixed assets	13	10
Net cash (used in) provided by investing activities	(7,606)	12,674
Cash flows from financing activities:
Net proceeds from issuance of common stock	0	1,092
Tax payment for employee shares withheld	(682)	(476)
Repurchase of common stock	(10,660)	(4,490)
Payment of excise tax associated with repurchase of common stock	(34)	0
Net cash used in financing activities	(11,376)	(3,874)
Effect of exchange rate differences on cash and cash equivalents	(15)	33
Net change in cash, cash equivalents and restricted cash	2,040	19,511
Cash, cash equivalents and restricted cash, beginning of year	48,076	29,757
Cash, cash equivalents and restricted cash, end of period	$ 50,116	$ 49,268

XML

Description of Business and Significant Accounting Policies

3 Months Ended

Mar. 31, 2026

Accounting Policies [Abstract]

Description of Business and Significant Accounting Policies

Description of Business and Significant Accounting Policies

Energy Recovery, Inc. and its wholly-owned subsidiaries (the “Company” or “Energy Recovery”) designs and manufactures world-

class energy-saving technology for critical infrastructure that communities rely on every day, driving a more resilient and sustainable future. 

Leveraging the Company’s pressure exchanger technology, which generates little to no emissions when operating, the Company believes its

solutions lower costs, save energy, reduce waste, and minimize emissions for companies across a variety of commercial and industrial

processes.  As the world coalesces around the urgent need to address climate change and its impacts, the Company is helping companies

reduce their energy consumption in their industrial processes, which in turn, reduces their carbon footprint.  The Company believes that its

customers do not have to sacrifice quality and cost savings for sustainability and the Company is committed to developing solutions that drive

long-term value – both financial and environmental.  The Company’s solutions are marketed, sold in, and developed for, the fluid-flow and

gas markets, such as seawater and wastewater desalination, natural gas, chemical processing and CO2-based refrigeration systems, under

the trademarks ERI®, PX®, Pressure Exchanger®, PX® Pressure Exchanger® (“PX”), Ultra High-Pressure PX, PX G™, PX G1300®,

PX PowerTrain™, AT™, and Aquabold™.  The Company owns, manufactures and/or develops its solutions, in whole or in part, in the United

States of America (the “U.S.”).

Basis of Presentation

The Condensed Consolidated Financial Statements include the accounts of Energy Recovery, Inc. and its wholly-owned subsidiaries. 

All intercompany accounts and transactions have been eliminated in consolidation.

The accompanying Condensed Consolidated Financial Statements have been prepared pursuant to the rules and regulations of the

Securities and Exchange Commission (the “SEC”).  Certain information and footnote disclosures normally included in the financial statements

prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) have been condensed or omitted pursuant to such rules

and regulations.  The December 31, 2025 Condensed Consolidated Balance Sheet was derived from audited financial statements and may

not include all disclosures required by GAAP; however, the Company believes that the disclosures are adequate to make the information

presented not misleading.

The March 31, 2026 unaudited Condensed Consolidated Financial Statements should be read in conjunction with the audited

Consolidated Financial Statements and the notes thereto for the fiscal year ended December 31, 2025 included in the Company’s Annual

Report on Form 10-K filed with the SEC on February 25, 2026 (the “2025 Annual Report”).

The results of operations for the interim periods are not necessarily indicative of the operating results for the full fiscal year or any

future periods.

Reclassifications

Certain prior period amounts have been reclassified in certain notes to the Condensed Consolidated Financial Statements to conform

to the current period presentation.

Use of Estimates

The preparation of Condensed Consolidated Financial Statements, in conformity with GAAP, requires the Company’s management to

make judgments, assumptions and estimates that affect the amounts reported in the Condensed Consolidated Financial Statements and

accompanying notes.

The accounting policies that reflect the Company’s significant estimates and judgments and that the Company believes are the most

critical to aid in fully understanding and evaluating its reported financial results are revenue recognition; stock-based compensation expense;

equipment useful life and valuation; goodwill valuation and impairment; inventory valuation and allowances, deferred taxes and valuation

allowances on deferred tax assets; and evaluation and measurement of contingencies. Those estimates could change, and as a result,

actual results could differ materially from those estimates.

The Company is not aware of any specific event or circumstance that would require an update to its estimates or judgments or a

revision of the carrying value of its assets or liabilities as of May 6, 2026, the date of issuance of this Quarterly Report on Form 10-Q.  These

estimates may change, as new events occur and additional information is obtained.  Actual results could differ materially from these

estimates under different assumptions or conditions.  The Company undertakes no obligation to publicly update these estimates for any

reason after the date of this Quarterly Report on Form 10-Q, except as required by law.

Significant Accounting PoliciesThere have been no material changes to the Company’s significant accounting policies in Note 1, “Description of Business and

Significant Accounting Policies - Significant Accounting Policies,” of the Notes to Consolidated Financial Statements included in Item 8,

“Financial Statements and Supplementary Data,” of the 2025 Annual Report.

Recently Adopted Accounting PronouncementIn July 2025, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update 2025-05, Measurement of

Credit Losses for Accounts Receivable and Contract Assets (“ASU 2025-05”).  ASU 2025-05 provides a practical expedient for measuring

expected credit losses on current accounts receivables and contract assets by assuming that conditions at the balance sheet date remain

unchanged over the life of the asset. The Company adopted ASU 2025-05 on January 1, 2026 and the adoption did not have a material

impact on results of operations, cash flows, or financial condition.

Recently Issued Accounting Pronouncements Not Yet AdoptedThere have been no issued accounting pronouncements that have not yet been adopted during the three months ended March 31,

2026 that apply to the Company other than the pronouncements disclosed in Note 1, “Description of Business and Significant Accounting

Policies - Recently Issued Accounting Pronouncements Not Yet Adopted,” of the Notes to Consolidated Financial Statements included in Item

8, “Financial Statements and Supplementary Data,” of the 2025 Annual Report.

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Revenue

3 Months Ended

Mar. 31, 2026

Revenue from Contract with Customer [Abstract]

Revenue

RevenueDisaggregation of Revenue

The following table presents the disaggregated revenues by segment, and within each segment, by geographical market based on the

customer “shipped to” address, and by channel customers.  Sales and usage-based taxes are excluded from revenues.  See Note 9,

“Segment Reporting,” for further discussion related to the Company’s segments.

	Three Months Ended March 31, 2026				Three Months Ended March 31, 2025
	Desalination	Wastewater	Emerging Technologies	Total	Desalination	Wastewater	Emerging Technologies	Total
(In thousands)
Geographical market
Middle East	$2,506	$—	$77	$2,583	$2,014	$—	$1	$2,015
Africa	196	—	—	196	866	—	—	$866
Other	6,205	601	121	6,927	4,879	305	—	$5,184
Total revenue	$8,907	$601	$198	$9,706	$7,759	$305	$1	$8,065
Channel
Original equipment manufacturer	$5,866	$601	$121	$6,588	$3,813	$188	$—	$4,001
Aftermarket	2,677	—	77	2,754	3,910	117	1	$4,028
Megaproject	364	—	—	364	36	—	—	$36
Total revenue	$8,907	$601	$198	$9,706	$7,759	$305	$1	$8,065

Contract Balances

The following table presents contract balances by category.

	March 31, 2026	December 31, 2025
	(In thousands)
Accounts receivable, net	$38,941	$76,639
Contract assets, current (included in prepaid expenses and other assets)	$1,701	$1,647
Contract liabilities:
Contract liabilities, current	$1,080	$1,039
Total contract liabilities	$1,080	$1,039

Contract Liabilities

The Company records contract liabilities, which consist of customer deposits and deferred revenue, when cash payments are

received in advance of the Company’s performance.  The following table presents the change in contract liability balances during the reported

periods.

	March 31, 2026	December 31, 2025
(In thousands)
Contract liabilities, beginning of year	$1,039	$571
Revenue recognized	(462)	(297)
Cash received, excluding amounts recognized as revenue during the period	503	765
Contract liabilities, end of period	$1,080	$1,039

Remaining Performance Obligations

As of March 31, 2026, the following table presents the revenue that is expected to be recognized related to performance obligations

that are unsatisfied or partially unsatisfied.

Period	Remaining Performance Obligations
	(In thousands)
2026 (remaining nine months)	$10,461
2027	6,587
Total	$17,048

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Loss Per Share

3 Months Ended

Mar. 31, 2026

Earnings Per Share [Abstract]

Loss Per Share

Loss Per Share Net loss for the reported period is divided by the weighted average number of basic and diluted common shares outstanding during

the reported period to calculate the basic and diluted loss per share, respectively.  Outstanding stock options to purchase common shares,

unvested restricted stock units (“RSUs”), and unvested performance restricted stock units (“PRSUs”) are collectively referred to as “equity

awards.”

•Basic loss per share is computed using the weighted average number of common shares outstanding during the period.

•Diluted loss per share is computed using the weighted average number of common and potentially dilutive shares outstanding

during the period, using the treasury stock method.  Any anti-dilutive effect of equity awards outstanding is not included in the

computation of diluted loss per share.

The following table presents the computation of basic and diluted loss per share.

	Three Months Ended March 31,
	2026	2025
(In thousands, except per share amounts)
Numerator
Net loss	$(12,251)	$(9,880)
Denominator (weighted average shares)
Basic and dilutive common shares outstanding	52,660	54,902
Diluted common shares outstanding	52,660	54,902
Loss Per Share
Basic and dilutive	$ (0.23)	$ (0.18)

The following table presents the equity awards that are excluded from diluted loss per share because (i) their effect would have been

anti-dilutive, or (ii) the equity awards were contingent upon conditions for issuance which were not satisfied as of March 31, 2026.

	Three Months Ended March 31,
	2026	2025
(In thousands)
Anti-dilutive equity award shares	3,305	2,806

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Other Financial Information

3 Months Ended

Mar. 31, 2026

Other Financial Information [Abstract]

Other Financial Information

Other Financial InformationCash, Cash Equivalents and Restricted Cash

The Condensed Consolidated Statements of Cash Flows explain the changes in the total of cash, cash equivalents and restricted

cash.  The following table presents a reconciliation of cash, cash equivalents and restricted cash, such as cash amounts deposited in

restricted cash accounts in connection with the Company’s credit cards, reported for each period within the Condensed Consolidated Balance

Sheets and the Condensed Consolidated Statements of Cash Flows that sum to the total of such amounts.

	March 31, 2026	December 31, 2025	March 31, 2025
	(In thousands)
Cash and cash equivalents	$50,116	$48,076	$49,137
Restricted cash, non-current (included in other assets, non-current)	—	—	131
Total cash, cash equivalents and restricted cash	$50,116	$48,076	$49,268

Inventories, net

Inventory amounts are stated at the lower of cost or net realizable value, using the first-in, first-out method.

	March 31, 2026	December 31, 2025
	(In thousands)
Raw materials	$9,688	$8,289
Work in process	6,879	6,270
Finished goods	17,035	10,768
Inventories, gross	33,602	25,327
Valuation adjustments for excess and obsolete inventory	(2,716)	(1,067)
Inventories, net	$30,886	$24,260

Goodwill

Goodwill is tested for impairment annually in the third quarter of the Company’s fiscal year or more frequently if indicators of potential

impairment exist.  The Company monitors the industries in which it operates and reviews its business performance for indicators of potential

impairment.  The recoverability of goodwill is measured at the reporting unit level, which represents the operating segment. 

In February 2026, the Company wound down operations of the CO2 retail grocery business within its Emerging Technologies

segment due to a fundamental change in the outlook of the business. The Company considered the wind down to be an indicator of

impairment and performed a quantitative impairment test using the discounted cash flow approach and market approach. Based on the

results of the analysis, the Company determined that the carrying value of the reporting unit exceeded its fair value and recorded an

impairment charge of $1.7 million during the three months ended March 31, 2026.

Accrued Expenses and Other Liabilities

	March 31, 2026	December 31, 2025
	(In thousands)
Accrued expenses and other liabilities, current
Payroll, benefits, incentives and commissions payable	$5,033	$6,683
Warranty reserve	189	205
Restructuring accrual	961	—
Income taxes payable	2,382	2,401
Other accrued expenses and other liabilities	2,325	2,381
Total accrued expenses and other liabilities	10,890	11,670
Other liabilities, non-current	1,098	1,070
Total accrued expenses, and current and non-current other liabilities	$11,988	$12,740

Restructuring2024 Restructuring PlanDuring the fourth quarter of fiscal year 2024, the Company implemented a restructuring plan which included reductions primarily within

the G&A function, in order to lower the Company’s operating cost structure, and to position the Company for profitable growth.  The Company

recorded a restructuring charge of approximately $2.8 million in total, of which $0.5 million was recorded during the three months ended

March 31, 2025. The total restructuring charge recorded relates to severance and benefits, including reemployment assistance, for

38 terminated employees, which was approximately 15% of the Company’s workforce.  The restructuring plan was complete as of December

31, 2025.  All expenses associated with the Company’s restructuring plan are included in “Restructuring charges” in the Condensed

Consolidated Statements of Operations.

2026 Restructuring Plan

During the first quarter of fiscal year 2026, the Company wound down operations of the CO2 retail grocery business within its

Emerging Technologies segment due to a fundamental change in the outlook of the business. The Company recorded a restructuring charge

of approximately $1.5 million during the three months ended March 31, 2026. The restructuring charge recorded relates to severance and

benefits, including reemployment assistance, for 23 terminated employees. In addition, the Company incurred other related charges

associated with the wind down of the CO2 retail grocery business, including excess and obsolescence reserves taken on CO2 inventory of

approximately $1.6 million and impairment of goodwill of approximately $1.7 million, which are included in “Restructuring - inventory reserve”

and “Impairment of goodwill” in the Condensed Consolidated Statements of Operations, respectively. Refer to section Goodwill within this

footnote for additional information. The restructuring plan was substantially complete by the end of the first quarter of fiscal year 2026 and the

Company does not expect to incur significant additional expenses related to the restructuring.

The following table presents the change in the Company’s restructuring accrual balances, which is included within Accrued expenses

and other liabilities on the Condensed Consolidated Balance Sheets, during the three months ended March 31, 2026:

	Severance and Benefits
	(In thousands)
Balance, as of December 31, 2024	$2,476
Restructuring provision, net of adjustments	313
Cash paid	(2,789)
Balance, as of December 31, 2025	$—
Restructuring provision	1,536
Cash paid	(575)
Balance, as of March 31, 2026	$961

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Investments and Fair Value Measurements

3 Months Ended

Mar. 31, 2026

Investments, Fair Value Disclosure [Abstract]

Investments and Fair Value Measurements

Investments and Fair Value MeasurementsFair Value of Financial InstrumentsThe following table presents the Company’s financial assets measured on a recurring basis by contractual maturity, including pricing

category, amortized cost and fair value. Gross unrealized gains and losses were not material for the periods presented.  As of March 31,

2026 and December 31, 2025, the Company had no financial liabilities and no Level 3 financial assets.

		March 31, 2026		December 31, 2025
	Pricing Category	Amortized Cost	Fair Value	Amortized Cost	Fair Value
		(In thousands)
Cash equivalents
Money market securities	Level 1	$17,892	$17,892	$11,225	$11,225
U.S. treasury securities	Level 2	—	—	12,952	12,955
Total cash equivalents		17,892	17,892	24,177	24,180
Short-term investments
U.S. treasury securities	Level 2	26,535	26,539	13,618	13,640
Corporate notes and bonds	Level 2	9,507	9,496	13,505	13,533
Total short-term investments		36,042	36,035	27,123	27,173
Long-term investments
U.S. treasury securities	Level 2	955	957	1,959	1,971
Corporate notes and bonds	Level 2	5,026	5,034	6,038	6,063
Total long-term investments		5,981	5,991	7,997	8,034
Total short and long-term investments		42,023	42,026	35,120	35,207
Total		$59,915	$59,918	$59,297	$59,387

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Lines of Credit

3 Months Ended

Mar. 31, 2026

Debt Disclosure [Abstract]

Lines of Credit

Lines of CreditCredit Agreement

The Company entered into a credit agreement with JPMorgan Chase Bank, N.A. on December 22, 2021 (as amended, the “Credit

Agreement”). The Credit Agreement was amended on January 21, 2026 to extend the expiration date from December 21, 2026 to

January 21, 2031. The Credit Agreement provides a committed revolving credit line of $50.0 million and includes both a revolving loan and a

letters of credit (“LCs”) component. 

Under the Credit Agreement, as of March 31, 2026, there were no revolving loans outstanding.  In addition, under the LCs

component, as of March 31, 2026 and December 31, 2025, the Company utilized $20.4 million of the maximum allowable credit line of

$30.0 million, which includes newly issued LCs and previously issued and unexpired stand-by letters of credit (“SBLCs”).

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Commitments and Contingencies

3 Months Ended

Mar. 31, 2026

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and ContingenciesSublease

On March 10, 2025, the Company entered into an agreement to sublease its Katy, Texas operating lease. The sublease commenced

on March 10, 2025 and will expire on December 31, 2029. The sublease is classified as an operating lease and has a remaining lease term

of 3.8 years as of March 31, 2026. Sublease income was immaterial during the three months ended March 31, 2026 and 2025, and is

recorded as a reduction of lease expense in general and administrative within the Company’s Condensed Consolidated Statements of

Operations.

The Company considered the sublease to be an indicator of impairment of the original lease. The Company compared the

undiscounted cash flows from the sublease to the carrying value of the Katy, Texas operating lease, which included the associated right-of-

use asset and leasehold improvements. The Company concluded that the carrying value was not recoverable as it exceeded the estimated

undiscounted cash flows.

The Company calculated the impairment charge by comparing the carrying value of the Katy, Texas operating lease to its fair value,

which was calculated based on the net discounted cash flows associated with the sublease. The Company recorded a total impairment

charge of $0.4 million during the three months ended March 31, 2025, of which $0.2 million and $0.2 million was recorded against the right-

of-use asset and the associated leasehold improvements, respectively. The allocation of the impairment charge was based on the relative

carrying value of the assets. The impairment charge was recorded in general and administrative within the Company’s Condensed

Consolidated Statements of Operations.

Litigation

From time-to-time, the Company has been named in and subject to various proceedings and claims in connection with its business. 

The Company may in the future become involved in litigation in the ordinary course of business, including litigation that could be material to

its business.  The Company considers all claims, if any, on a quarterly basis and, based on known facts, assesses whether potential losses

are considered reasonably possible, probable and estimable.  Based upon this assessment, the Company then evaluates disclosure

requirements and whether to accrue for such claims in its consolidated financial statements.  The Company records a provision for a liability

when it is both probable that a liability has been incurred and the amount of the loss can be reasonably estimated.  These provisions are

reviewed at least quarterly and are adjusted to reflect the impacts of negotiations, settlements, rulings, advice of legal counsel and other

information and events pertaining to a particular case.  As of March 31, 2026, the Company was not involved in any lawsuits, legal

proceedings or claims that would have a material effect on the Company’s financial position, results of operations, or cash flows.  Therefore,

there were no material losses which were probable or reasonably estimable and accordingly, the Company did not record a provision for

litigation as of March 31, 2026 and December 31, 2025.

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Income Taxes

3 Months Ended

Mar. 31, 2026

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

	Three Months Ended March 31,
	2026	2025
(In thousands, except percentages)
Benefit from income taxes	$(1,775)	$(1,603)
Discrete items	(132)	52
Benefit from income taxes, excluding discrete items	$(1,907)	$(1,551)
Effective tax rate	12.7%	14.0%
Effective tax rate, excluding discrete items	13.6%	13.5%

The Company’s interim period tax benefit from income taxes is determined using an estimate of its annual effective tax rate, adjusted

for discrete items, if any, that arise during the period.  Each quarter, the Company updates its estimate of the annual effective tax rate, and if

the estimated annual effective tax rate changes, the Company makes a cumulative adjustment in such period.  The Company’s quarterly tax

provision and estimate of its annual effective tax rate are subject to variation due to several factors, including variability in accurately

predicting its pre-tax income or loss and the mix of jurisdictions to which they relate, the applicability of special tax regimes, and changes in

how the Company does business.

For the three months ended March 31, 2026, the recognized benefit from income taxes resulted from the tax projection based on the

full year forecasted profit and included benefits related to the U.S. federal foreign income and foreign-derived deduction eligible

income (“FDDEI”) federal research and development (“R&D”) tax credit, reduced by certain permanent differences, such as non-deductible

stock-based compensation.

For the three months ended March 31, 2025, the recognized benefit from income taxes resulted from the tax projection based on the

full year forecasted profit and included benefits related to the U.S. federal foreign-derived intangible income (“FDII”), federal R&D tax credit,

certain permanent differences, such as stock-based compensation shortfalls, and partial release of California valuation allowance.

The effective tax rate excluding discrete items for the three months ended March 31, 2026, as compared to the prior year, differed

primarily due to lower projected federal R&D tax credits, increased non-deductible officer stock-based compensation, largely offset by

projected higher U.S. FDDEI benefits.

On July 4, 2025, the One Big Beautiful Bill (“OBBBA”) Act, which includes a broad range of tax reform provisions, was signed into law

in the United States. During the three months ended March 31, 2026, the Company recorded its best estimate of the impact of the OBBBA on

the income tax provision. The Company will continue to evaluate the elections available within the OBBBA, which may impact the timing of

permanent and temporary differences within the Company’s tax provision.

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Segment Reporting

3 Months Ended

Mar. 31, 2026

Segment Reporting [Abstract]

Segment Reporting

Segment Reporting

The Company’s Chief Operating Decision-Maker (“CODM”) is its President and Chief Executive Officer.  The Company continues to

monitor and review its segment reporting structure in accordance with authoritative guidance to determine whether any changes have

occurred that would impact its reportable segments.During the three months ended March 31, 2026, the Company changed the composition of its reportable segments to better reflect

how the CODM manages the business. As a part of this change, the Water segment was separated into two segments, the Desalination

segment and the Wastewater segment, as both met the criteria of a reportable segment. Prior periods have been recast to conform to the

current year presentation. The recast of prior year information had no impact on the Company’s Condensed Consolidated Balance Sheets,

Condensed Consolidated Statements of Operations, Condensed Consolidated Statements of Comprehensive Loss or Condensed

Consolidated Statements of Cash Flows.

Segment Definition

Income and type of expense activities that are included in the Desalination, Wastewater and Emerging Technologies segments and

corporate operating expenses are as follows:

Desalination segment:  The continued development, sales and support of the PX, hydraulic turbochargers and pumps used in

seawater desalination treatment facilities.

Wastewater segment: The continued development, sales and support of the PX, hydraulic turbochargers and pumps used in

wastewater treatment facilities.

Emerging Technologies segment:  The continued development, sales and support of activities related to emerging

technologies, such as the PX G1300 used in industrial and commercial refrigeration applications. In February 2026, the

Company wound down operations of the CO2 retail grocery business within its Emerging Technologies segment due to a

fundamental change in the outlook of the business. As of the first quarter of fiscal year 2026, the Company has substantially

completed the wind down of the business.

Corporate operating expenses:  The corporate expenses include certain unallocated expenses outside of the operating

segments, such as audit and accounting services, legal services, board of director fees and expenses, human resources

activities, information systems activities and other separately managed general expenses not related to the identified

segments. 

The following table presents a summary of the Company’s financial information by segment, including significant segment expenses,

and corporate operating expenses.

	Three Months Ended March 31, 2026					Three Months Ended March 31, 2025
	Desalination	Wastewater	Emerging Technologies	Corporate	Total	Desalination	Wastewater	Emerging Technologies	Corporate	Total
(In thousands)
Revenue	$8,907	$601	$198	$—	$9,706	$7,759	$305	$1	$—	$8,065
Cost of revenue	4,942	370	60	—	5,372	3,382	179	46	—	3,607
Restructuring - inventory reserve	—	—	1,632	—	1,632	—	—	—	—	—
Gross profit (loss)	3,965	231	(1,494)	—	2,702	4,377	126	(45)	—	4,458
Operating expenses
General and administrative	756	981	348	4,370	6,455	845	728	755	6,246	8,574
Sales and marketing	2,485	1,163	858	613	5,119	2,108	1,037	1,270	491	4,906
Research and development	1,616	136	1,037	—	2,789	849	329	1,823	—	3,001
Restructuring charges	335	18	1,140	43	1,536	107	103	123	206	539
Impairment of goodwill	—	—	1,662	—	1,662	—	—	—	—	—
Total operating expenses	5,192	2,298	5,045	5,026	17,561	3,909	2,197	3,971	6,943	17,020
Operating income (loss)	$(1,227)	$(2,067)	$(6,539)	$(5,026)	$(14,859)	$468	$(2,071)	$(4,016)	$(6,943)	$(12,562)

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Concentrations

3 Months Ended

Mar. 31, 2026

Risks and Uncertainties [Abstract]

Concentrations

ConcentrationsRevenue by Country

The following table presents the Company’s product revenue by country. 

	Three Months Ended March 31,
	2026	2025
Product revenue by country:(1)
Cyprus	12%	**
Egypt	12%	**
India	**	18%
Others(2)	76%	82%
Total	100%	100%

**Zero or less than 10%.

(1)Countries representing more than 10% of product revenues for the periods presented.

(2)Countries in the aggregate, individually representing less than 10% of product revenues for the periods presented.

Customer Revenue Concentration

The following table presents the customers that account for 10% or more of the Company’s revenue and their related segment for

each of the periods presented.  Although certain customers might account for greater than 10% of the Company’s revenue at any one point in

time, the concentration of revenue between a limited number of customers shifts regularly, depending on when revenue is recognized.  The

percentages by customer reflect specific relationships or contracts that would concentrate revenue for the periods presented and do not

indicate a trend specific to any one customer.

		Three Months Ended March 31,
	Segment	2026	2025
Customer A	Desalination	13%	**
Customer B	Desalination	**	12%

**Zero or less than 10%.

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Stockholders' Equity

3 Months Ended

Mar. 31, 2026

Stockholders' Equity Note [Abstract]

Stockholders' Equity

Stockholders’ EquityShare Repurchase ProgramsThe Company’s Board, from time-to-time, has authorized share repurchase programs under which the Company may, at the

discretion of management, repurchase its outstanding common stock in the open market, or in privately negotiated transactions, in

compliance with applicable state and federal securities laws.  The timing and amounts of any purchase under the Company’s share

repurchase programs is based on market conditions and other factors including price, regulatory requirements, and capital availability.  The

Company accounts for stock repurchases under these programs using the cost method.  As of March 31, 2026, the Company has

repurchased 14,927,562 shares of its common stock at an aggregate cost of $176.8 million under all share repurchase programs.

February 2025 Authorization

On February 26, 2025, the Company announced that the Board authorized a share repurchase program under which the Company

may repurchase its outstanding common stock, at the discretion of management, for up to $30.0 million in aggregate cost, which includes

both the share value of the acquired common stock and the fees charged in connection with acquiring the common stock (the “February 2025

Authorization”). On August 19, 2025, the Company concluded all share repurchases under the February 2025 Authorization. Under the

February 2025 Authorization, the Company repurchased 2,183,648 shares at an aggregate cost of $30.0 million.

August 2025 Authorization

On August 6, 2025, the Board announced a share repurchase program under which the Company may repurchase its outstanding

common stock, at the discretion of management, for up to $25.0 million in aggregate cost, which includes both the share value of the

acquired common stock and the fees charged in connection with acquiring the common stock (the “August 2025 Authorization”). The August

2025 Authorization will expire in May 2026. The Company began to purchase under the August 2025 Authorization in August 2025.

The following table presents the share repurchase activities under the August 2025 Authorization as of March 31, 2026.

	Number of Shares Purchased	Average Price Paid per Share(1)	Plan Activity
			(In millions)
August 2025 Authorization			25.0
Repurchases under August 2025 Authorization	1,346,869	$12.07	(16.3)
Remaining amount under August 2025 Authorization			$8.7

(1)Excluding commissions

May 2026 Authorization

On May 6, 2026, the Company announced that the Board authorized a share repurchase program under which the Company may

repurchase its outstanding common stock, at the discretion of management, for up to $25.0 million in aggregate cost, which includes both the

share value of the acquired common stock and the fees charged in connection with acquiring the common stock (the “May 2026

Authorization”). The May 2026 Authorization will expire in April 2027. The Company expects to begin purchasing under the May 2026

Authorization in May 2026.

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Insider Trading Arrangements	3 Months Ended
	Mar. 31, 2026
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

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Description of Business and Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2026

Accounting Policies [Abstract]

Basis of Presentation

The Condensed Consolidated Financial Statements include the accounts of Energy Recovery, Inc. and its wholly-owned subsidiaries. 

All intercompany accounts and transactions have been eliminated in consolidation.

The accompanying Condensed Consolidated Financial Statements have been prepared pursuant to the rules and regulations of the

Securities and Exchange Commission (the “SEC”).  Certain information and footnote disclosures normally included in the financial statements

prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) have been condensed or omitted pursuant to such rules

and regulations.  The December 31, 2025 Condensed Consolidated Balance Sheet was derived from audited financial statements and may

not include all disclosures required by GAAP; however, the Company believes that the disclosures are adequate to make the information

presented not misleading.

The results of operations for the interim periods are not necessarily indicative of the operating results for the full fiscal year or any

future periods.

Reclassifications

Certain prior period amounts have been reclassified in certain notes to the Condensed Consolidated Financial Statements to conform

to the current period presentation.

Use of Estimates

The preparation of Condensed Consolidated Financial Statements, in conformity with GAAP, requires the Company’s management to

make judgments, assumptions and estimates that affect the amounts reported in the Condensed Consolidated Financial Statements and

accompanying notes.

The accounting policies that reflect the Company’s significant estimates and judgments and that the Company believes are the most

critical to aid in fully understanding and evaluating its reported financial results are revenue recognition; stock-based compensation expense;

equipment useful life and valuation; goodwill valuation and impairment; inventory valuation and allowances, deferred taxes and valuation

allowances on deferred tax assets; and evaluation and measurement of contingencies. Those estimates could change, and as a result,

actual results could differ materially from those estimates.

The Company is not aware of any specific event or circumstance that would require an update to its estimates or judgments or a

revision of the carrying value of its assets or liabilities as of May 6, 2026, the date of issuance of this Quarterly Report on Form 10-Q.  These

estimates may change, as new events occur and additional information is obtained.  Actual results could differ materially from these

estimates under different assumptions or conditions.  The Company undertakes no obligation to publicly update these estimates for any

reason after the date of this Quarterly Report on Form 10-Q, except as required by law.

Recently Issued Accounting Pronouncements Not Yet Adopted

In July 2025, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update 2025-05, Measurement of

Credit Losses for Accounts Receivable and Contract Assets (“ASU 2025-05”).  ASU 2025-05 provides a practical expedient for measuring

expected credit losses on current accounts receivables and contract assets by assuming that conditions at the balance sheet date remain

unchanged over the life of the asset. The Company adopted ASU 2025-05 on January 1, 2026 and the adoption did not have a material

impact on results of operations, cash flows, or financial condition.

There have been no issued accounting pronouncements that have not yet been adopted during the three months ended March 31,

2026 that apply to the Company other than the pronouncements disclosed in Note 1, “Description of Business and Significant Accounting

Policies - Recently Issued Accounting Pronouncements Not Yet Adopted,” of the Notes to Consolidated Financial Statements included in Item

8, “Financial Statements and Supplementary Data,” of the 2025 Annual Report.

Loss Per Share

Net loss for the reported period is divided by the weighted average number of basic and diluted common shares outstanding during

the reported period to calculate the basic and diluted loss per share, respectively.  Outstanding stock options to purchase common shares,

unvested restricted stock units (“RSUs”), and unvested performance restricted stock units (“PRSUs”) are collectively referred to as “equity

awards.”

•Basic loss per share is computed using the weighted average number of common shares outstanding during the period.

•Diluted loss per share is computed using the weighted average number of common and potentially dilutive shares outstanding

during the period, using the treasury stock method.  Any anti-dilutive effect of equity awards outstanding is not included in the

computation of diluted loss per share.

Litigation

The Company considers all claims, if any, on a quarterly basis and, based on known facts, assesses whether potential losses

are considered reasonably possible, probable and estimable.  Based upon this assessment, the Company then evaluates disclosure

requirements and whether to accrue for such claims in its consolidated financial statements.  The Company records a provision for a liability

when it is both probable that a liability has been incurred and the amount of the loss can be reasonably estimated.  These provisions are

reviewed at least quarterly and are adjusted to reflect the impacts of negotiations, settlements, rulings, advice of legal counsel and other

information and events pertaining to a particular case.

Income Taxes

The Company’s interim period tax benefit from income taxes is determined using an estimate of its annual effective tax rate, adjusted

for discrete items, if any, that arise during the period.  Each quarter, the Company updates its estimate of the annual effective tax rate, and if

the estimated annual effective tax rate changes, the Company makes a cumulative adjustment in such period.  The Company’s quarterly tax

provision and estimate of its annual effective tax rate are subject to variation due to several factors, including variability in accurately

predicting its pre-tax income or loss and the mix of jurisdictions to which they relate, the applicability of special tax regimes, and changes in

how the Company does business.

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Revenue (Tables)

3 Months Ended

Mar. 31, 2026

Revenue from Contract with Customer [Abstract]

Schedule of Disaggregation of Revenue

The following table presents the disaggregated revenues by segment, and within each segment, by geographical market based on the

customer “shipped to” address, and by channel customers.  Sales and usage-based taxes are excluded from revenues.  See Note 9,

“Segment Reporting,” for further discussion related to the Company’s segments.

	Three Months Ended March 31, 2026				Three Months Ended March 31, 2025
	Desalination	Wastewater	Emerging Technologies	Total	Desalination	Wastewater	Emerging Technologies	Total
(In thousands)
Geographical market
Middle East	$2,506	$—	$77	$2,583	$2,014	$—	$1	$2,015
Africa	196	—	—	196	866	—	—	$866
Other	6,205	601	121	6,927	4,879	305	—	$5,184
Total revenue	$8,907	$601	$198	$9,706	$7,759	$305	$1	$8,065
Channel
Original equipment manufacturer	$5,866	$601	$121	$6,588	$3,813	$188	$—	$4,001
Aftermarket	2,677	—	77	2,754	3,910	117	1	$4,028
Megaproject	364	—	—	364	36	—	—	$36
Total revenue	$8,907	$601	$198	$9,706	$7,759	$305	$1	$8,065

Schedule of Contract with Customer, Asset and Liability

The following table presents contract balances by category.

	March 31, 2026	December 31, 2025
	(In thousands)
Accounts receivable, net	$38,941	$76,639
Contract assets, current (included in prepaid expenses and other assets)	$1,701	$1,647
Contract liabilities:
Contract liabilities, current	$1,080	$1,039
Total contract liabilities	$1,080	$1,039

Schedule of Contract With Customer, Contract Liability, Activity

The following table presents the change in contract liability balances during the reported

periods.

	March 31, 2026	December 31, 2025
(In thousands)
Contract liabilities, beginning of year	$1,039	$571
Revenue recognized	(462)	(297)
Cash received, excluding amounts recognized as revenue during the period	503	765
Contract liabilities, end of period	$1,080	$1,039

Schedule of Revenue, Remaining Performance Obligation

As of March 31, 2026, the following table presents the revenue that is expected to be recognized related to performance obligations

that are unsatisfied or partially unsatisfied.

Period	Remaining Performance Obligations
	(In thousands)
2026 (remaining nine months)	$10,461
2027	6,587
Total	$17,048

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Loss Per Share (Tables)

3 Months Ended

Mar. 31, 2026

Earnings Per Share [Abstract]

Schedule of Computation of Basic and Diluted Net Income (Loss) Per Share

The following table presents the computation of basic and diluted loss per share.

	Three Months Ended March 31,
	2026	2025
(In thousands, except per share amounts)
Numerator
Net loss	$(12,251)	$(9,880)
Denominator (weighted average shares)
Basic and dilutive common shares outstanding	52,660	54,902
Diluted common shares outstanding	52,660	54,902
Loss Per Share
Basic and dilutive	$ (0.23)	$ (0.18)

Schedule of Antidilutive Securities Excluded from Computation of Loss Per Share

The following table presents the equity awards that are excluded from diluted loss per share because (i) their effect would have been

anti-dilutive, or (ii) the equity awards were contingent upon conditions for issuance which were not satisfied as of March 31, 2026.

	Three Months Ended March 31,
	2026	2025
(In thousands)
Anti-dilutive equity award shares	3,305	2,806

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Other Financial Information (Tables)

3 Months Ended

Mar. 31, 2026

Other Financial Information [Abstract]

Schedule of Cash, Cash Equivalents and Restricted Cash

The following table presents a reconciliation of cash, cash equivalents and restricted cash, such as cash amounts deposited in

restricted cash accounts in connection with the Company’s credit cards, reported for each period within the Condensed Consolidated Balance

Sheets and the Condensed Consolidated Statements of Cash Flows that sum to the total of such amounts.

	March 31, 2026	December 31, 2025	March 31, 2025
	(In thousands)
Cash and cash equivalents	$50,116	$48,076	$49,137
Restricted cash, non-current (included in other assets, non-current)	—	—	131
Total cash, cash equivalents and restricted cash	$50,116	$48,076	$49,268

Schedule of Inventories, Net

Inventory amounts are stated at the lower of cost or net realizable value, using the first-in, first-out method.

	March 31, 2026	December 31, 2025
	(In thousands)
Raw materials	$9,688	$8,289
Work in process	6,879	6,270
Finished goods	17,035	10,768
Inventories, gross	33,602	25,327
Valuation adjustments for excess and obsolete inventory	(2,716)	(1,067)
Inventories, net	$30,886	$24,260

Schedule of Accrued Expenses and Other Liabilities

	March 31, 2026	December 31, 2025
	(In thousands)
Accrued expenses and other liabilities, current
Payroll, benefits, incentives and commissions payable	$5,033	$6,683
Warranty reserve	189	205
Restructuring accrual	961	—
Income taxes payable	2,382	2,401
Other accrued expenses and other liabilities	2,325	2,381
Total accrued expenses and other liabilities	10,890	11,670
Other liabilities, non-current	1,098	1,070
Total accrued expenses, and current and non-current other liabilities	$11,988	$12,740

Schedule of Restructuring Accrual

The following table presents the change in the Company’s restructuring accrual balances, which is included within Accrued expenses

and other liabilities on the Condensed Consolidated Balance Sheets, during the three months ended March 31, 2026:

	Severance and Benefits
	(In thousands)
Balance, as of December 31, 2024	$2,476
Restructuring provision, net of adjustments	313
Cash paid	(2,789)
Balance, as of December 31, 2025	$—
Restructuring provision	1,536
Cash paid	(575)
Balance, as of March 31, 2026	$961

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Investments and Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2026

Investments, Fair Value Disclosure [Abstract]

Schedule of Amortized Cost and Fair Value of Available for Sale Securities

The following table presents the Company’s financial assets measured on a recurring basis by contractual maturity, including pricing

category, amortized cost and fair value. Gross unrealized gains and losses were not material for the periods presented.  As of March 31,

2026 and December 31, 2025, the Company had no financial liabilities and no Level 3 financial assets.

		March 31, 2026		December 31, 2025
	Pricing Category	Amortized Cost	Fair Value	Amortized Cost	Fair Value
		(In thousands)
Cash equivalents
Money market securities	Level 1	$17,892	$17,892	$11,225	$11,225
U.S. treasury securities	Level 2	—	—	12,952	12,955
Total cash equivalents		17,892	17,892	24,177	24,180
Short-term investments
U.S. treasury securities	Level 2	26,535	26,539	13,618	13,640
Corporate notes and bonds	Level 2	9,507	9,496	13,505	13,533
Total short-term investments		36,042	36,035	27,123	27,173
Long-term investments
U.S. treasury securities	Level 2	955	957	1,959	1,971
Corporate notes and bonds	Level 2	5,026	5,034	6,038	6,063
Total long-term investments		5,981	5,991	7,997	8,034
Total short and long-term investments		42,023	42,026	35,120	35,207
Total		$59,915	$59,918	$59,297	$59,387

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Income Taxes (Tables)

3 Months Ended

Mar. 31, 2026

Income Tax Disclosure [Abstract]

Schedule of Components of Income Tax Expense (Benefit)

	Three Months Ended March 31,
	2026	2025
(In thousands, except percentages)
Benefit from income taxes	$(1,775)	$(1,603)
Discrete items	(132)	52
Benefit from income taxes, excluding discrete items	$(1,907)	$(1,551)
Effective tax rate	12.7%	14.0%
Effective tax rate, excluding discrete items	13.6%	13.5%

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Segment Reporting (Tables)

3 Months Ended

Mar. 31, 2026

Segment Reporting [Abstract]

Schedule of Financial Information by Segment

The following table presents a summary of the Company’s financial information by segment, including significant segment expenses,

and corporate operating expenses.

	Three Months Ended March 31, 2026					Three Months Ended March 31, 2025
	Desalination	Wastewater	Emerging Technologies	Corporate	Total	Desalination	Wastewater	Emerging Technologies	Corporate	Total
(In thousands)
Revenue	$8,907	$601	$198	$—	$9,706	$7,759	$305	$1	$—	$8,065
Cost of revenue	4,942	370	60	—	5,372	3,382	179	46	—	3,607
Restructuring - inventory reserve	—	—	1,632	—	1,632	—	—	—	—	—
Gross profit (loss)	3,965	231	(1,494)	—	2,702	4,377	126	(45)	—	4,458
Operating expenses
General and administrative	756	981	348	4,370	6,455	845	728	755	6,246	8,574
Sales and marketing	2,485	1,163	858	613	5,119	2,108	1,037	1,270	491	4,906
Research and development	1,616	136	1,037	—	2,789	849	329	1,823	—	3,001
Restructuring charges	335	18	1,140	43	1,536	107	103	123	206	539
Impairment of goodwill	—	—	1,662	—	1,662	—	—	—	—	—
Total operating expenses	5,192	2,298	5,045	5,026	17,561	3,909	2,197	3,971	6,943	17,020
Operating income (loss)	$(1,227)	$(2,067)	$(6,539)	$(5,026)	$(14,859)	$468	$(2,071)	$(4,016)	$(6,943)	$(12,562)

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Concentrations (Tables)

3 Months Ended

Mar. 31, 2026

Risks and Uncertainties [Abstract]

Schedules of Concentration of Risk, by Risk Factor

The following table presents the Company’s product revenue by country. 

	Three Months Ended March 31,
	2026	2025
Product revenue by country:(1)
Cyprus	12%	**
Egypt	12%	**
India	**	18%
Others(2)	76%	82%
Total	100%	100%

**Zero or less than 10%.

(1)Countries representing more than 10% of product revenues for the periods presented.

(2)Countries in the aggregate, individually representing less than 10% of product revenues for the periods presented.

The following table presents the customers that account for 10% or more of the Company’s revenue and their related segment for

each of the periods presented.  Although certain customers might account for greater than 10% of the Company’s revenue at any one point in

time, the concentration of revenue between a limited number of customers shifts regularly, depending on when revenue is recognized.  The

percentages by customer reflect specific relationships or contracts that would concentrate revenue for the periods presented and do not

indicate a trend specific to any one customer.

		Three Months Ended March 31,
	Segment	2026	2025
Customer A	Desalination	13%	**
Customer B	Desalination	**	12%

**Zero or less than 10%.

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Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 2026

Stockholders' Equity Note [Abstract]

Schedule of Stock by Class

The following table presents the share repurchase activities under the August 2025 Authorization as of March 31, 2026.

	Number of Shares Purchased	Average Price Paid per Share(1)	Plan Activity
			(In millions)
August 2025 Authorization			25.0
Repurchases under August 2025 Authorization	1,346,869	$12.07	(16.3)
Remaining amount under August 2025 Authorization			$8.7

(1)Excluding commissions

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Revenue - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Disaggregation of Revenue [Line Items]
Total revenue	$ 9,706	$ 8,065
Desalination
Disaggregation of Revenue [Line Items]
Total revenue	8,907	7,759
Wastewater
Disaggregation of Revenue [Line Items]
Total revenue	601	305
Emerging Technologies
Disaggregation of Revenue [Line Items]
Total revenue	198	1
Original equipment manufacturer
Disaggregation of Revenue [Line Items]
Total revenue	6,588	4,001
Original equipment manufacturer | Desalination
Disaggregation of Revenue [Line Items]
Total revenue	5,866	3,813
Original equipment manufacturer | Wastewater
Disaggregation of Revenue [Line Items]
Total revenue	601	188
Original equipment manufacturer | Emerging Technologies
Disaggregation of Revenue [Line Items]
Total revenue	121	0
Aftermarket
Disaggregation of Revenue [Line Items]
Total revenue	2,754	4,028
Aftermarket | Desalination
Disaggregation of Revenue [Line Items]
Total revenue	2,677	3,910
Aftermarket | Wastewater
Disaggregation of Revenue [Line Items]
Total revenue	0	117
Aftermarket | Emerging Technologies
Disaggregation of Revenue [Line Items]
Total revenue	77	1
Megaproject
Disaggregation of Revenue [Line Items]
Total revenue	364	36
Megaproject | Desalination
Disaggregation of Revenue [Line Items]
Total revenue	364	36
Megaproject | Wastewater
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Megaproject | Emerging Technologies
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Middle East
Disaggregation of Revenue [Line Items]
Total revenue	2,583	2,015
Middle East | Desalination
Disaggregation of Revenue [Line Items]
Total revenue	2,506	2,014
Middle East | Wastewater
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Middle East | Emerging Technologies
Disaggregation of Revenue [Line Items]
Total revenue	77	1
Africa
Disaggregation of Revenue [Line Items]
Total revenue	196	866
Africa | Desalination
Disaggregation of Revenue [Line Items]
Total revenue	196	866
Africa | Wastewater
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Africa | Emerging Technologies
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Other
Disaggregation of Revenue [Line Items]
Total revenue	6,927	5,184
Other | Desalination
Disaggregation of Revenue [Line Items]
Total revenue	6,205	4,879
Other | Wastewater
Disaggregation of Revenue [Line Items]
Total revenue	601	305
Other | Emerging Technologies
Disaggregation of Revenue [Line Items]
Total revenue	$ 121	$ 0

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Revenue - Schedule of Contract with Customer, Asset and Liability (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025	Dec. 31, 2024
Revenue from Contract with Customer [Abstract]
Accounts receivable, net	$ 38,941	$ 76,639
Contract assets, current (included in prepaid expenses and other assets)	1,701	1,647
Contract liabilities:
Contract liabilities, current	1,080	1,039
Total contract liabilities	$ 1,080	$ 1,039	$ 571

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Revenue - Schedule of Contract With Customer, Contract Liability, Activity (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2026	Dec. 31, 2025
Contract With Customer, Liability [Roll Forward]
Contract liabilities, beginning of year	$ 1,039	$ 571
Revenue recognized	(462)	(297)
Cash received, excluding amounts recognized as revenue during the period	503	765
Contract liabilities, end of period	$ 1,080	$ 1,039

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Revenue - Schedule of Remaining Performance Obligation (Details) $ in Thousands	Mar. 31, 2026 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied	$ 17,048
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied	$ 10,461
Performance obligations expected to be satisfied, expected timing	9 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied	$ 6,587
Performance obligations expected to be satisfied, expected timing	1 year

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Loss Per Share - Schedule of Computation of Basic and Diluted Net Income (Loss) Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Numerator
Net loss	$ (12,251)	$ (9,880)
Denominator (weighted average shares)
Basic common shares outstanding (in shares)	52,660	54,902
Diluted common shares outstanding (in shares)	52,660	54,902
Diluted common shares outstanding (in shares)	52,660	54,902
Loss Per Share
Basic (in dollars per share)	$ (0.23)	$ (0.18)
Diluted (in dollars per share)	$ (0.23)	$ (0.18)

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Loss Per Share - Schedule of Antidilutive Securities Excluded From Computation of Diluted Earnings Per Share (Details) - shares shares in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Earnings Per Share [Abstract]
Anti-dilutive equity award shares (in shares)	3,305	2,806

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Other Financial Information - Schedule of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025	Mar. 31, 2025	Dec. 31, 2024
Other Financial Information [Abstract]
Cash and cash equivalents	$ 50,116	$ 48,076	$ 49,137
Restricted cash, non-current (included in other assets, non-current)	0	0	131
Total cash, cash equivalents and restricted cash	$ 50,116	$ 48,076	$ 49,268	$ 29,757

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Other Financial Information - Schedule of Inventories, Net (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Other Financial Information [Abstract]
Raw materials	$ 9,688	$ 8,289
Work in process	6,879	6,270
Finished goods	17,035	10,768
Inventories, gross	33,602	25,327
Valuation adjustments for excess and obsolete inventory	(2,716)	(1,067)
Inventories, net	$ 30,886	$ 24,260

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Other Financial Information - Goodwill Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Other Financial Information [Abstract]
Impairment of goodwill	$ 1,662	$ 0

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Other Financial Information - Schedule of Accrued Expenses and Other Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Accrued expenses and other liabilities, current
Payroll, benefits, incentives and commissions payable	$ 5,033	$ 6,683
Warranty reserve	189	205
Restructuring accrual	961	0
Income taxes payable	2,382	2,401
Other accrued expenses and other liabilities	2,325	2,381
Total accrued expenses and other liabilities	10,890	11,670
Non-current
Other liabilities, non-current	1,098	1,070
Total accrued expenses, and current and non-current other liabilities	$ 11,988	$ 12,740

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Other Financial Information - Restructuring Narrative (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2026 USD ($) position	Mar. 31, 2025 USD ($)	Mar. 31, 2025 USD ($) position
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 1,536	$ 539
Restructuring - inventory reserve	1,632	0
Impairment of goodwill	1,662	0
2024 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 500	$ 2,800
Number of employees terminated | position			38
Percentage of total employees terminated			15.00%
2026 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 1,500
Number of employees terminated | position	23
Restructuring - inventory reserve	$ 1,600
Impairment of goodwill	$ 1,700

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Other Financial Information - Restructuring Accrual Balances (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2026	Dec. 31, 2025
Restructuring Reserve [Roll Forward]
Beginning balance	$ 0	$ 2,476
Restructuring provision	1,536	313
Cash paid	(575)	(2,789)
Ending balance	$ 961	$ 0

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Investments and Fair Value Measurements - Narrative (Details) - USD ($)	Mar. 31, 2026	Dec. 31, 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial liabilities	$ 0	$ 0
Level 3 Inputs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial assets	$ 0	$ 0

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Investments and Fair Value Measurements - Schedule of Amortized Cost and Fair Value of Available for Sale Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Debt Securities, Available-for-sale, Unrealized Gain (Loss) [Abstract]
Amortized Cost	$ 59,915	$ 59,297
Fair Value	59,918	59,387
Cash equivalents
Debt Securities, Available-for-sale, Unrealized Gain (Loss) [Abstract]
Amortized Cost	17,892	24,177
Fair Value	17,892	24,180
Total short and long-term investments
Debt Securities, Available-for-sale, Unrealized Gain (Loss) [Abstract]
Amortized Cost	42,023	35,120
Fair Value	42,026	35,207
Short-term investments
Debt Securities, Available-for-sale, Unrealized Gain (Loss) [Abstract]
Amortized Cost	36,042	27,123
Fair Value	36,035	27,173
Long-term investments
Debt Securities, Available-for-sale, Unrealized Gain (Loss) [Abstract]
Amortized Cost	5,981	7,997
Fair Value	5,991	8,034
Level 1 | Cash equivalents | Money market securities
Debt Securities, Available-for-sale, Unrealized Gain (Loss) [Abstract]
Amortized Cost	17,892	11,225
Fair Value	17,892	11,225
Level 2 | Cash equivalents | U.S. treasury securities
Debt Securities, Available-for-sale, Unrealized Gain (Loss) [Abstract]
Amortized Cost	0	12,952
Fair Value	0	12,955
Level 2 | Short-term investments | U.S. treasury securities
Debt Securities, Available-for-sale, Unrealized Gain (Loss) [Abstract]
Amortized Cost	26,535	13,618
Fair Value	26,539	13,640
Level 2 | Short-term investments | Corporate notes and bonds
Debt Securities, Available-for-sale, Unrealized Gain (Loss) [Abstract]
Amortized Cost	9,507	13,505
Fair Value	9,496	13,533
Level 2 | Long-term investments | U.S. treasury securities
Debt Securities, Available-for-sale, Unrealized Gain (Loss) [Abstract]
Amortized Cost	955	1,959
Fair Value	957	1,971
Level 2 | Long-term investments | Corporate notes and bonds
Debt Securities, Available-for-sale, Unrealized Gain (Loss) [Abstract]
Amortized Cost	5,026	6,038
Fair Value	$ 5,034	$ 6,063

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Lines of Credit - (Details) - Committed Revolving Credit Line - USD ($)	Mar. 31, 2026	Dec. 31, 2025	Dec. 22, 2021
Line of Credit | Revolving Credit Facility
Line of Credit Facility [Line Items]
Long-term debt	$ 0
JP Morgan Chase Bank, N.A. | Letter of Credit
Line of Credit Facility [Line Items]
Maximum borrowing capacity	30,000,000.0	$ 30,000,000.0
JP Morgan Chase Bank, N.A. | Line of Credit
Line of Credit Facility [Line Items]
Maximum borrowing capacity			$ 50,000,000.0
JP Morgan Chase Bank, N.A. | Line of Credit | Letter of Credit
Line of Credit Facility [Line Items]
Utilized amount of the maximum allowable credit line	$ 20,400,000	$ 20,400,000

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Commitments and Contingencies - Narrative (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Loss Contingencies [Line Items]
Impairment of long-lived assets	$ 0	$ 353,000
Impairment charge, right-of-use asset		200,000
Impairment charge, leasehold improvements		$ 200,000
Provision for litigation	$ 0		$ 0
Sublease | Katy, Texas
Loss Contingencies [Line Items]
Weighted average remaining lease term	3 years 9 months 18 days

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Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Income Tax Disclosure [Abstract]
Benefit from income taxes	$ (1,775)	$ (1,603)
Discrete items	(132)	52
Benefit from income taxes, excluding discrete items	$ (1,907)	$ (1,551)
Effective tax rate	12.70%	14.00%
Effective tax rate, excluding discrete items	13.60%	13.50%

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Segment Reporting - Schedule of Financial Information by Segment (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2026 USD ($) segment	Mar. 31, 2025 USD ($) segment
Segment Reporting [Abstract]
Number of reportable segments | segment	3	2
Number of reportable segments separated into | segment	2
Segment Reporting Information [Line Items]
Revenue	$ 9,706	$ 8,065
Cost of revenue	5,372	3,607
Restructuring - inventory reserve	1,632	0
Gross profit	2,702	4,458
Operating expenses:
General and administrative	6,455	8,574
Sales and marketing	5,119	4,906
Research and development	2,789	3,001
Restructuring charges	1,536	539
Impairment of goodwill	1,662	0
Total operating expenses	17,561	17,020
Loss from operations	(14,859)	(12,562)
Desalination
Segment Reporting Information [Line Items]
Revenue	8,907	7,759
Wastewater
Segment Reporting Information [Line Items]
Revenue	601	305
Emerging Technologies
Segment Reporting Information [Line Items]
Revenue	198	1
Operating Segments | Desalination
Segment Reporting Information [Line Items]
Revenue	8,907	7,759
Cost of revenue	4,942	3,382
Restructuring - inventory reserve	0	0
Gross profit	3,965	4,377
Operating expenses:
General and administrative	756	845
Sales and marketing	2,485	2,108
Research and development	1,616	849
Restructuring charges	335	107
Impairment of goodwill	0	0
Total operating expenses	5,192	3,909
Loss from operations	(1,227)	468
Operating Segments | Wastewater
Segment Reporting Information [Line Items]
Revenue	601	305
Cost of revenue	370	179
Restructuring - inventory reserve	0	0
Gross profit	231	126
Operating expenses:
General and administrative	981	728
Sales and marketing	1,163	1,037
Research and development	136	329
Restructuring charges	18	103
Impairment of goodwill	0	0
Total operating expenses	2,298	2,197
Loss from operations	(2,067)	(2,071)
Operating Segments | Emerging Technologies
Segment Reporting Information [Line Items]
Revenue	198	1
Cost of revenue	60	46
Restructuring - inventory reserve	1,632	0
Gross profit	(1,494)	(45)
Operating expenses:
General and administrative	348	755
Sales and marketing	858	1,270
Research and development	1,037	1,823
Restructuring charges	1,140	123
Impairment of goodwill	1,662	0
Total operating expenses	5,045	3,971
Loss from operations	(6,539)	(4,016)
Corporate
Segment Reporting Information [Line Items]
Revenue	0	0
Cost of revenue	0	0
Restructuring - inventory reserve	0	0
Gross profit	0	0
Operating expenses:
General and administrative	4,370	6,246
Sales and marketing	613	491
Research and development	0	0
Restructuring charges	43	206
Impairment of goodwill	0	0
Total operating expenses	5,026	6,943
Loss from operations	$ (5,026)	$ (6,943)