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: 000-23661

ROCKWELL MEDICAL, INC.

(Exact name of registrant as specified in its charter)

Delaware	38-3317208
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
30142 S. Wixom Road, Wixom, Michigan	48393
(Address of principal executive offices)	(Zip Code)

(248) 960-9009

(Registrant’s telephone number, including area code)

(Former name, former address and former fiscal year, if changed since last report)

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    ☐  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 such files).  ☒  Yes    ☐  No

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a 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 Rule 12b-2 of the Exchange Act).  ☐  Yes ☒ No

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, par value $0.0001	RMTI	Nasdaq Capital Market

The number of shares of common stock outstanding as of April 30, 2026 was 39,470,299.

Rockwell Medical, Inc. and Subsidiaries

Index to Form 10-Q

	Page
Part I — Financial Information (unaudited)
Item 1 - Unaudited Financial Statements
Condensed Consolidated Balance Sheets as of March 31, 2026 and December 31, 2025	3
Condensed Consolidated Statements of Operations for the Three Months Ended March 31, 2026 and 2025	4
Condensed Consolidated Statements of Comprehensive Loss for the Three Months Ended March 31, 2026 and 2025	5
Condensed Consolidated Statements of Changes in Stockholders’ Equity for the Three Months Ended March 31, 2026 and 2025	6
Condensed Consolidated Statements of Cash Flows for the Three Months Ended March 31, 2026 and 2025	7
Notes to Condensed Consolidated Financial Statements	8
Item 2 - Management’s Discussion and Analysis of Financial Condition and Results of Operations	14
Item 3 - Quantitative and Qualitative Disclosures about Market Risk	15
Item 4 - Controls and Procedures	15
Part II — Other Information
Item 1 - Legal Proceedings	15
Item 1A - Risk Factors	16
Item 2 - Unregistered Sales of Equity Securities and Use of Proceeds	16
Item 3 - Defaults Upon Senior Securities	16
Item 4 - Mine Safety Disclosures	16
Item 5 - Other Information	16
Item 6 - Exhibits	16
Signatures	17

2

PART I – FINANCIAL INFORMATION

Item 1.  Financial Statements

ROCKWELL MEDICAL, INC. AND SUBSIDIARIES

UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS

(In thousands, except share and par value amounts)

	March 31, 2026		December 31, 2025
ASSETS
Cash and Cash Equivalents	$	9,609	$	10,711
Investments Available-for-Sale	14,281		14,286
Accounts Receivable, net	8,825		8,143
Inventory, net	3,055		3,424
Prepaid and Other Current Assets	1,173		1,599
Total Current Assets	36,943		38,163
Property and Equipment, net	4,328		4,629
Right of Use Assets - Operating, net	4,608		2,569
Right of Use Assets - Finance, net	549		651
Intangible Assets, net	9,518		9,656
Goodwill	921		921
Other Non-Current Assets	556		556
Total Assets	$	57,423	$	57,145
LIABILITIES AND STOCKHOLDERS’ EQUITY
Accounts Payable	$	3,446	$	1,999
Accrued Liabilities	3,160		4,337
Deferred Consideration - Current	500		1,000
Lease Liabilities - Operating - Current	1,451		1,155
Lease Liabilities - Finance - Current	468		469
Term Loans - Current - Net of Issuance Costs	707		—
Insurance Financing Note Payable	66		264
Customer Deposits	70		356
Total Current Liabilities	9,868		9,580
Lease Liabilities - Operating - Long-Term	3,301		1,454
Lease Liabilities - Finance - Long-Term	190		304
Term Loans - Long-Term, net of Issuance Costs	8,207		8,826
Total Liabilities	21,566		20,164
Commitments and Contingencies (see Note 13)
Stockholders' Equity:
Preferred Stock, $0.0001 par value, 2,000,000 shares authorized; 15,000 shares issued and outstanding at March 31, 2026 and December 31, 2025	—		—
Common Stock, $0.0001 par value; 170,000,000 shares authorized; 39,470,299 and 39,405,302 shares issued and outstanding at March 31, 2026 and December 31, 2025, respectively	4		4
Additional Paid-in Capital	440,317		439,838
Accumulated Deficit	(404,597)		(402,992)
Accumulated Other Comprehensive Income	133		131
Total Stockholders’ Equity	35,857		36,981
Total Liabilities and Stockholders’ Equity	$	57,423	$	57,145

The accompanying notes are an integral part of the condensed consolidated financial statements.

3

ROCKWELL MEDICAL, INC. AND SUBSIDIARIES

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(In thousands, except share and per share amounts)

	Three Months Ended March 31,
	2026		2025
Net Sales	$	17,336	$	18,914
Cost of Sales	14,439		15,872
Gross Profit	2,897		3,042
Selling and Marketing	567		711
General and Administrative	3,810		3,691
Operating Loss	(1,480)		(1,360)
Other Income (Expense):
Realized Gain on Available-for-Sale Investments	120		56
Interest Expense	(282)		(277)
Interest Income	37		66
Total Other Expense, net	(125)		(155)
Net Loss	$	(1,605)	$	(1,515)
Basic and Diluted Net Loss per Share	$	(0.04)	$	(0.04)
Basic and Diluted Weighted Average Shares Outstanding	39,418,302		34,107,640

The accompanying notes are an integral part of the condensed consolidated financial statements.

4

ROCKWELL MEDICAL, INC. AND SUBSIDIARIES

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS

(In thousands)

	Three Months Ended March 31,
	2026		2025
Net Loss	$	(1,605)	$	(1,515)
Reclassification of Realized Gain on Available-for-Sale Investments Included in Net Loss	(120)		(56)
Unrealized Gain on Available-for-Sale Investments	122		62
Comprehensive Loss	$	(1,603)	$	(1,509)

The accompanying notes are an integral part of the condensed consolidated financial statements.

5

ROCKWELL MEDICAL, INC. AND SUBSIDIARIES

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY

(In thousands, except share amounts)

	PREFERRED STOCK			COMMON STOCK			ADDITIONAL PAID-IN CAPITAL		ACCUMULATED DEFICIT		ACCUMULATED OTHER COMPREHENSIVE INCOME		TOTAL STOCKHOLDERS'  EQUITY
	SHARES	AMOUNT		SHARES	AMOUNT
Balance as of January 1, 2026	15,000	$	—	39,405,302	$	4	$	439,838	$	(402,992)	$	131	$	36,981
Net Loss	—	—		—	—		—		(1,605)		—		(1,605)
Reclassification of Realized Gain on Available-for-Sale Investments	—	—		—	—		—		—		(120)		(120)
Unrealized Gain on Available-for-Sale Investments	—	—		—	—		—		—		122		122
Vesting of Restricted Stock Units Issued, net of Taxes Withheld and Cancellations	—	—		64,997	—		—		—		—		—
Stock-based Compensation	—	—		—	—		479		—		—		479
Balance as of March 31, 2026	15,000	$	—	39,470,299	$	4	$	440,317	$	(404,597)	$	133	$	35,857

	PREFERRED STOCK			COMMON STOCK			ADDITIONAL PAID-IN CAPITAL		ACCUMULATED DEFICIT		ACCUMULATED OTHER COMPREHENSIVE INCOME		TOTAL STOCKHOLDERS' EQUITY
	SHARES	AMOUNT		SHARES	AMOUNT
Balance as of January 1, 2025	15,000	$	—	34,056,920	$	3	$	430,207	$	(397,678)	$	54	$	32,586
Net Loss	—	—		—	—		—		(1,515)		—		(1,515)
Reclassification of Realized Gain on Available-for-Sale Investments	—	—		—	—		—		—		(56)		(56)
Unrealized Gain on Available-for-Sale Investments	—	—		—	—		—		—		62		62
Vesting of Restricted Stock Units Issued, net of Taxes Withheld and Cancellations	—	—		200,983	—		—		—		—		—
Stock-based Compensation	—	—		—	—		445		—		—		445
Balance as of March 31, 2025	15,000	$	—	34,257,903	$	3	$	430,652	$	(399,193)	$	60	$	31,522

The accompanying notes are an integral part of the condensed consolidated financial statements.

6

ROCKWELL MEDICAL, INC. AND SUBSIDIARIES

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(In thousands)

	Three Months Ended March 31,
	2026		2025
Cash Flows From Operating Activities:
Net Loss	$	(1,605)	$	(1,515)
Adjustments To Reconcile Net Loss To Net Cash Used In Operating Activities:
Depreciation and Amortization	511		539
Stock-based Compensation	479		445
Write-off of Inventory	—		178
Non-cash Lease Expense from Right of Use Assets	512		518
Amortization of Debt Financing Costs and Accretion of Debt Discount and Premium	88		88
Loss on Disposal of Assets	178		54
Realized Gain on Sale of Investments	(120)		(56)
Changes in Assets and Liabilities:
Accounts Receivable	(682)		(1,379)
Inventory	369		733
Prepaid and Other Assets	426		378
Accounts Payable	1,446		(944)
Lease Liabilities	(306)		(389)
Accrued and Other Liabilities	(1,463)		(1,662)
Deferred License Revenue	—		(475)
Net Cash Used In Operating Activities	(167)		(3,487)
Cash Flows From Investing Activities:
Purchases of Investments Available-for-Sale	(7,072)		(2,938)
Proceeds from Sales of Investments Available-for-Sale	7,200		3,000
Purchases of Equipment	(425)		(63)
Proceeds from Sale of Equipment	175		—
Net Cash Used In Investing Activities	(122)		(1)
Cash Flows From Financing Activities:
Payments on Insurance Financing Note Payable	(198)		(201)
Payments on Finance Lease Liabilities	(115)		(146)
Deferred Consideration Paid in Connection with Evoqua Asset Acquisition	(500)		(436)
Net Cash Used In Financing Activities	(813)		(783)
Net Decrease in Cash and Cash Equivalents	(1,102)		(4,271)
Cash and Cash Equivalents at Beginning of Period	10,711		15,662
Cash and Cash Equivalents at End of Period	$	9,609	$	11,391
Supplemental Disclosure of Cash Flow Information:
Cash Paid for Interest	$	193	$	190
Supplemental Disclosure of Noncash Investing and Financing Activities:
Right of Use Assets - Operating Obtained in Exchange for Lease Liabilities - Operating	$	2,450	$	—
Change in Unrealized Gain on Investments Available-for-Sale	$	2	$	5

The accompanying notes are an integral part of the condensed consolidated financial statements.

7

ROCKWELL MEDICAL, INC. AND SUBSIDIARIES

Notes to Condensed Consolidated Financial Statements

(Unaudited)

1.  Description of Business

Rockwell Medical, Inc. (the "Company", "Rockwell", or "Rockwell Medical") is a healthcare company that develops, manufactures, commercializes, and distributes a portfolio of hemodialysis products for dialysis providers worldwide.

Rockwell is a supplier of liquid and dry, acid and bicarbonate concentrates for dialysis patients. Hemodialysis is the most common form of end-stage kidney disease treatment and is usually performed in freestanding outpatient dialysis centers, at hospital-based outpatient centers, skilled nursing facilities, or a patient’s home.

Rockwell manufactures hemodialysis concentrates under current Good Manufacturing Practices ("cGMP") at its two facilities in Michigan and Texas, and manufactures dry acid concentrate mixers at its facility in Iowa. Rockwell delivers the majority of its hemodialysis concentrates products and mixers to dialysis clinics throughout the United States and internationally utilizing its own delivery trucks and third-party carriers.

Rockwell was incorporated in the state of Michigan in 1996 and re-domiciled to the state of Delaware in 2019. Our headquarters is located at 30142 Wixom Road, Wixom, Michigan 48393. Our telephone number is (248) 960-9009 and our website is https://www.rockwellmed.com.

2. Liquidity and Capital Resources

As of March 31, 2026, Rockwell had approximately $23.9 million of cash, cash equivalents and investments available-for-sale, and working capital of $27.1 million. Net cash used in operating activities for the three months ended March 31, 2026 was approximately $0.2 million. Based on the currently available working capital along with the expectation of management of its ability to execute on its operational plans as discussed below, management believes the Company currently has sufficient funds to meet its operating requirements for at least the next twelve months from the date of the filing of this report.

The Company continues to review its operational plans and execute on the acquisition of new customers, and has implemented cost containment activities. The Company may require additional capital to sustain its operations and make the investments it needs to execute its strategic plan. In addition, the Company's plans may include raising capital, if needed, by using the $13.1 million remaining on its at-the-market ("ATM") facility or other methods or forms of financings, subject to existing limitations. If the Company attempts to obtain additional debt or equity financing, the Company cannot assume such financing will be available on favorable terms, if at all.

The Company is subject to certain covenants and cure provisions under its Loan Agreement (as defined below in Note 15) with Innovatus Life Sciences Lending Fund I, LP ("Innovatus"), which, on January 2, 2024, was amended to include, among other things, an interest-only period for 30 months, or up to 36 months if certain conditions are met, and to extend the maturity date to January 1, 2029 (See Note 15 for further detail). The Company satisfied those conditions and will now make interest-only payments for the full 36 months. As of March 31, 2026, the Company is in compliance with all covenants.

The global macroeconomic environment is uncertain, and could be negatively affected by, among other things, changes in U.S. trade policies, including tariffs and other trade restrictions or the threat of such actions, instability in the global capital and credit markets, supply chain weaknesses, and instability in the geopolitical environment, including as a result of the Russian invasion of Ukraine, the conflicts in the Middle East and other political tensions, and the occurrence of natural disasters and public health crises. Such challenges have caused, and may continue to cause, recession fears, rising interest rates, foreign exchange volatility and inflationary pressures. At this time, the Company is unable to quantify the potential effects, if any, of this economic and political instability on its future operations.

Rockwell has utilized a range of financing methods to fund its operations in the past; however, current conditions in the financial and credit markets may limit the availability of funding, refinancing or increase the cost of funding. Due to the rapidly evolving nature of the global situation, it is not possible to predict the extent to which these conditions could adversely affect the Company's liquidity and capital resources in the future.

3.  Basis of Presentation, Summary of Significant Accounting Policies and Recent Accounting Pronouncements

Basis of Presentation

The accompanying condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) for interim financial information and pursuant to the instructions to Form 10-Q and Rule 10-01 of Regulation S-X of the U. S. Securities and Exchange Commission (“SEC”) and on the same basis as the Company prepares its annual audited consolidated financial statements.

The condensed consolidated balance sheet at March 31, 2026, and the condensed consolidated statements of operations, comprehensive loss, changes in stockholders' equity, and cash flows for the three months ended March 31, 2026 and 2025 are unaudited, but include all adjustments, consisting of normal recurring adjustments the Company considers necessary for a fair presentation of the financial position, operating results, and cash flows for the periods presented. The results for the three months ended March 31, 2026 are not necessarily indicative of results to be expected for the year ending December 31, 2026 or for any future interim period. The condensed consolidated balance sheet at December 31, 2025 has been derived from audited financial statements; however, it does not include all of the information and notes required by U.S. GAAP for complete financial statements. The accompanying condensed consolidated financial statements should be read in conjunction with the audited financial statements for the year ended December 31, 2025 and notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2025 as filed with the SEC on March 26, 2026. The Company’s consolidated subsidiaries consist of its wholly-owned subsidiaries, Rockwell Transportation, Inc. and Rockwell Medical India Private Limited.

The accompanying condensed consolidated interim financial statements include the accounts of the Company and its subsidiaries. All material intercompany balances and transactions have been eliminated in consolidation.

Use of Estimates

The preparation of the condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that may affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Restructuring and Other Charges

In the third quarter of 2025, the Company concluded manufacturing at its facility in Greer, South Carolina as part of its ongoing efforts to streamline operations and improve efficiency. This was neither material to the Company’s overall financial position nor performance. No impairment losses were recorded, as the plant's assets were either fully depreciated prior to closure or transferred to other operating locations. The closure is not expected to have a significant impact on the Company's future operations, and the restructuring activities associated with this closure are substantially complete.

Loss Per Share

Basic and diluted net loss per share for the three months ended March 31, 2026 and 2025 was calculated as follows:

	Three Months Ended March 31,
(In thousands, except share and per share amounts)	2026		2025
Numerator:
Net Loss	$	(1,605)	$	(1,515)
Net Loss Attributable to Common Stockholders	$	(1,605)	$	(1,515)
Denominator:
Weighted Average Number of Shares of Common Stock Outstanding - Basic and Diluted	39,418,302		34,107,640
Net Loss per Share Attributable to Common Stockholders - Basic and Diluted	$	(0.04)	$	(0.04)

Basic income (loss) per share (“EPS”) is computed by dividing net loss attributable to common stockholders by the weighted average number of shares of common stock outstanding during the period, excluding the effects of any potentially dilutive securities. Diluted EPS gives effect to the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock, using the more dilutive of the two- class method and the if-

converted method in the period of earnings. The two-class method is an earnings allocation method that determines income (loss) per share (when there are earnings) for common stock and participating securities. The if-converted method assumes all convertible securities are converted into common stock. Diluted EPS excludes all dilutive potential shares of common stock if their effect is anti-dilutive.

The Company’s potentially dilutive securities include stock options, restricted stock awards and units, convertible preferred stock and warrants. The following table includes the potential shares of common stock that were excluded from the computation of diluted EPS attributable to common stockholders for the periods indicated because including them would have had an anti-dilutive effect:

	Three Months Ended March 31,
	2026	2025
Warrants to Purchase Common Stock	3,984,484	3,984,484
Options to Purchase Common Stock	3,200,049	1,884,476
Convertible Preferred Stock	1,405,001	1,391,045
Unvested Restricted Stock Units	1,073,330	383,326
Unvested Restricted Stock Units - Market Condition	717,000	—
Unvested Restricted Stock Awards	—	891
Total	10,379,864	7,644,222

Adoption of Recent Accounting Pronouncements and New Accounting Pronouncements

The Company continually assesses new accounting pronouncements to determine their applicability. When it is determined a new accounting pronouncement affects the Company’s financial reporting, the Company undertakes a review to determine the consequences of the change to its consolidated financial statements and assures there are sufficient controls in place to ascertain the Company’s consolidated financial statements properly reflect the change.

Recently Adopted Accounting Pronouncements

In July 2025, the Financial Accounting Standards Board ("FASB") issued the Accounting Standards Update ("ASU") 2025-05, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses for Accounts Receivable and Contract Assets, which simplifies the estimation of credit losses on current accounts receivable and contract assets by allowing the election of a practical expedient to assume that the current conditions as of the consolidated balance sheet date will remain unchanged for the remaining life of the asset when developing a reasonable and supportable forecast as part of estimating expected credit losses on these assets. The Company adopted this ASU on January 1, 2026, and the adoption did not have a material impact on the Company’s consolidated financial statements or footnote disclosures.

New Accounting Pronouncements

In November 2024, the FASB issued ASU 2024-03, Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses, which is intended to provide more detailed information about specified categories of expenses (purchases of inventory, employee compensation, depreciation and amortization) included in certain expense captions presented on the consolidated statement of operations. This new standard is effective for fiscal years beginning after December 15, 2026, and interim periods within fiscal years beginning after December 15, 2027. Early adoption is permitted. The amendments may be applied either (1) prospectively to financial statements issued for periods after the effective date of this ASU or (2) retrospectively to all prior periods presented in the consolidated financial statements. The Company is currently assessing the impact this ASU will have on the consolidated financial statements and footnote disclosures.

4.  Revenue Recognition

The Company recognizes revenue under Accounting Standards Codification ("ASC") 606, Revenue from Contracts with Customers, issued by the FASB. The core principle of the revenue standard is that a company should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. The following five steps are applied to achieve that core principle:

•Step 1: Identify the contract with the customer

•Step 2: Identify the performance obligations in the contract

•Step 3: Determine the transaction price

•Step 4: Allocate the transaction price to the performance obligations in the contract

•Step 5: Recognize revenue when the company satisfies a performance obligation

Taxes assessed by a governmental authority that are both imposed on and concurrent with a specific revenue-producing transaction, that are collected by Rockwell from a customer, are excluded from revenue.

Certain distributors deduct distribution service fees from amounts due to the Company. These fees, along with chargebacks arising from contracted pricing arrangements with certain end customers, are recorded as reductions of revenue. Chargebacks represent the difference between the distributor’s acquisition cost and the lower contracted price offered to the end customer, and are estimated and recorded as a reduction of revenue at the time of the initial sale to the distributor. Chargeback estimates represent variable consideration and are determined based on contractual pricing arrangements, historical chargeback activity and expected sales to eligible end customers.

Shipping and handling costs associated with outbound freight related to contracts with customers are accounted for as a fulfillment cost and are included in cost of sales when control of the goods transfers to the customer.

Nature of goods and services

Rockwell operates in one market segment, the hemodialysis market, which involves the manufacture, sale and distribution of hemodialysis products to hemodialysis clinics, including pharmaceutical, dialysis concentrates, dialysis kits and other ancillary products used in the dialysis process.

Rockwell's customer mix is diverse, with most customer sales concentrations under 10%. For the three months ended March 31, 2026, revenues from sales to two customers, Fresenius Medical Care North America ("Fresenius") and Nipro Medical Corporation, a subsidiary of Nipro Corporation Japan ("Nipro") were approximately 11% and 10% of total revenues for the period, respectively. For the three months ended March 31, 2025, revenues from sales to two customers, DaVita, Inc. ("DaVita") and Fresenius were approximately 27% and 10% of total revenues for the period, respectively. At March 31, 2026, Fresenius and Nipro each represented 17% of the total net consolidated accounts receivable balance. At December 31, 2025, DaVita represented 14% of the total net consolidated accounts receivable balance. See below for additional information regarding the Company's contract with DaVita.

Product Sales

The Company accounts for individual products and services separately if they are distinct (i.e., if a product or service is separately identifiable from other items and if a customer can benefit from it on its own or with other resources that are readily available to the customer). The consideration, including any discounts, is allocated between separate products and services based on their stand-alone selling prices. The stand-alone selling prices are determined based on the cost plus margin approach.

Drug and dialysis concentrate products are sold directly to dialysis clinics and to wholesale distributors in both domestic and international markets. Distribution and license agreements for which upfront fees are received are evaluated upon execution or modification of the agreement to determine if the agreement creates a separate performance obligation from the underlying product sales. For all existing distribution and license agreements, the distribution and license agreement is not a distinct performance obligation from the product sales. In instances where regulatory approval of the product has not been established and the Company does not have sufficient experience with the foreign regulatory body to conclude that regulatory approval is probable, the revenue for the performance obligation is recognized over the term of the license agreement (over time recognition). Conversely, when regulatory approval already exists or is probable, revenue is recognized at the point in time that control of the product transfers to the customer.

For the majority of the Company's international customers, the Company recognizes revenue when the customer takes control at the shipping point, which is generally the Company's plant or warehouse. For other customers, the Company recognizes revenue based on when the customer takes control of the product upon delivery. The amount of revenue recognized is based on the purchase order less returns and adjusted for any rebates, discounts, chargebacks or other amounts paid to customers

estimated at the time of sale. Customers typically pay for the product based on customary business practices with payment terms averaging 30 days, while a small subset of customers have payment terms averaging 60 days.

Deferred License Revenue

The Company received upfront fees under three distribution and license agreements, which were recognized as revenue over the estimated term of the applicable distribution and license agreement as regulatory approval was not received and the Company did not have sufficient experience in China, India, South Korea and Turkey to determine that regulatory approval was probable as of the execution of the agreement. During the three months ended March 31, 2025, all remaining deferred revenue relating to the distribution and license agreements was recognized, resulting in $0.3 million of revenue recorded. All license agreements have been terminated.

Product Purchase Agreement

On September 18, 2023, Rockwell and its long-time customer, DaVita, a provider of kidney care, entered into an Amended and Restated Products Purchase Agreement (the "Amended Agreement"), which amends and restates the Product Purchase Agreement, dated July 1, 2019, as amended, under which the Company supplies DaVita with certain dialysis concentrates. Under the Amended Agreement, the Company and DaVita agreed to an increase in product pricing, effective September 1, 2023. The term of the Amended Agreement was scheduled to expire on December 31, 2024. Prior to the expiration, the Company received written notice from DaVita, notifying the Company that DaVita intended to extend the term of the Amended Agreement through December 31, 2025 (the "Extension Term"). However, DaVita subsequently indicated that it will completely transition to another supplier, subject to further discussion between Rockwell and DaVita. DaVita agreed to non-refundable payments to ensure supply continuity during the transition period for products purchased, including quarterly, non-refundable payments totaling $2.0 million during the year ended December 31, 2025, of which $0.9 million was recorded as revenue during the three months ended March 31, 2025. On December 23, 2025, DaVita and the Company extended the term of the Amended Agreement through December 31, 2026 (as amended, the " Second Extension Term") with an increase in product pricing during the Second Extension Term.

Disaggregation of revenue

Revenue is disaggregated by primary geographical market, major product line, and timing of revenue recognition.

In thousands	Three Months Ended March 31, 2026
Products By Geographic Area	Total		U.S.		Rest of World
Concentrate Product Sales - Point-in-Time	$	17,336	$	14,563	$	2,773
Net Revenue	$	17,336	$	14,563	$	2,773

In thousands	Three Months Ended March 31, 2025
Products By Geographic Area	Total		U.S.		Rest of World
License Fee – Over Time	$	325	$	—	$	325
Concentrate Product Sales - Point-in-Time	18,589		16,436		2,153
Net Revenue	$	18,914	$	16,436	$	2,478

Contract balances

The following table provides information about receivables, contract assets, and contract liabilities from contracts with customers.

In thousands	March 31, 2026		December 31, 2025		January 1, 2025
Accounts Receivable, net	$	8,825	$	8,143	$	8,291
Contract Liabilities, which are included in Deferred License Revenue	$	—	$	—	$	475

There were no other material contract assets recorded on the condensed consolidated balance sheets as of March 31, 2026 and December 31, 2025. The Company does not generally accept returns of its concentrate products and no material

provision for returns of concentrates products was established as of March 31, 2026 or December 31, 2025. As of March 31, 2026 and December 31, 2025, the Company recorded an accrual for chargebacks and distribution fees of $0.7 million and $1.0 million, respectively, which are presented as an offset to accounts receivable in the accompanying condensed consolidated balance sheets.

Transaction price allocated to remaining performance obligations

Revenue expected to be recognized in any future year related to remaining performance obligations, excluding revenue pertaining to contracts that have an original expected duration of one year or less, contracts where revenue is recognized as invoiced and contracts with variable consideration related to undelivered performance obligations, was nil as of March 31, 2026. The Company applies the practical expedient in ASC 606, paragraph 606-10-50-14 and does not disclose information about remaining performance obligations that have original expected durations of one year or less.

5.  Intangible Assets and Deferred Consideration

Intangible Assets

Our customer relationship intangible asset relates to customer relationships acquired in connection with an acquisition (the "Evoqua Asset Acquisition") executed on July 10, 2023 with Evoqua Water Technologies LLC ("Evoqua").

The details of our intangible assets subject to amortization are set forth below (in thousands):

	March 31, 2026
	Useful Life	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Customer Relationships	20 years	$	11,035	$	(1,517)	$	9,518

	December 31, 2025
	Useful Life	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Customer Relationships	20 years	$	11,035	$	(1,379)	$	9,656

During each of the three months ended March 31, 2026 and 2025, the Company recorded amortization of its customer relationship intangible asset of $0.1 million.

Estimated future amortization expense on the Company's customer relationships intangible asset as of March 31, 2026 is as follows (table in thousands):

Year ending December 31:
2026 (Remainder of Year)	$	414
2027	552
2028	552
2029	552
2030	552
Thereafter	6,896
Total	$	9,518

8

ROCKWELL MEDICAL, INC. AND SUBSIDIARIES

Notes to Condensed Consolidated Financial Statements

(Unaudited)

Deferred Consideration

A portion of the purchase price of the Evoqua Asset Acquisition was deferred on the acquisition date and is reflected in Deferred Consideration - Current on the condensed consolidated balance sheet, with payment terms extending through April 2026. The Company made payments of $0.5 million and $0.4 million during the three months ended March 31, 2026 and 2025, respectively.

6.  Investments - Available-for-Sale

Investments available-for-sale consisted of the following as of March 31, 2026 and December 31, 2025 (table in thousands):

	March 31, 2026
	Amortized Cost		Unrealized Gain		Unrealized Loss		Accrued Interest		Fair Value
Available-for-Sale Securities
Debt Securities	$	14,142	$	139	$	—	$	—	$	14,281

	December 31, 2025
	Amortized Cost		Unrealized Gain		Unrealized Loss		Accrued Interest		Fair Value
Available-for-Sale Securities
Debt Securities	$	14,149	$	137	$	—	$	—	$	14,286

The fair value of investments available-for-sale are determined using quoted market prices from daily exchange-traded markets based on the closing price as of the balance sheet date and are classified as a Level 1 measurement under ASC 820, Fair Value Measurements.

During both of the three months ended March 31, 2026 and 2025, the Company sold investments outstanding for a gain of $0.1 million, which is included in realized gain on available-for-sale investments on the condensed consolidated statements of operations.

As of March 31, 2026, the Company's remaining available-for-sale securities are U.S. Department of the Treasury bonds and are all due within one year.

7. Segment Reporting

Operating segments are defined as components of an entity about which discrete financial information is evaluated regularly by the Company's Chief Operating Decision Maker ("CODM") in deciding how to allocate resources and assess performance. Rockwell operates in one market segment, the hemodialysis market, which involves the manufacture, sale and distribution of hemodialysis products to hemodialysis clinics, including pharmaceutical, dialysis concentrates, dialysis kits and other ancillary products used in the dialysis process. Accordingly, the Company has one reportable segment. The Company has a single management team that reports to its Chief Executive Officer, the Company's CODM, who comprehensively manages the entire Company. The accounting policies of the segment are the same as those described in the summary of significant accounting policies.

The CODM assesses performance for the segment and decides how to allocate resources based on net loss that also is reported on the statements of operations and comprehensive loss as net loss. The CODM uses net loss to monitor budget and forecast versus actual results in assessing segment performance, as well as cash forecast models, in order to evaluate operating results and performance in deciding how to allocate resources. The measure of segment assets is reported on the condensed consolidated balance sheets as total assets.

9

ROCKWELL MEDICAL, INC. AND SUBSIDIARIES

Notes to Condensed Consolidated Financial Statements

(Unaudited)

The Company’s significant segment expenses for its one segment for the three months ended March 31, 2026 and 2025 consisted of the following (table in thousands):

	Three Months Ended March 31,
	2026		2025
Net Sales	$	17,336	$	18,914
Cost of Sales	14,439		15,872
Gross Profit	2,897		3,042
Employee Compensation	2,735		2,678
Administrative Costs	1,642		1,724
Operating Loss	(1,480)		(1,360)
Other Income (Expense):
Realized Gain on Available-for-Sale Investments	120		56
Interest Expense	(282)		(277)
Interest Income	37		66
Total Other Expense, net	(125)		(155)
Net Loss	$	(1,605)	$	(1,515)

8.  Inventory

Components of inventory, net of reserves, as of March 31, 2026 and December 31, 2025 were as follows (table in thousands):

	March 31, 2026		December 31, 2025
Inventory - Current Portion
Raw Materials	$	1,599	$	1,848
Work in Process	241		199
Finished Goods	1,215		1,377
Total Inventory	$	3,055	$	3,424

As of March 31, 2026 and December 31, 2025, Rockwell had total current concentrate inventory aggregating $3.1 million and $3.4 million, respectively, against which Rockwell had reserved $25,000 at each period end.

9.  Property and Equipment

As of March 31, 2026 and December 31, 2025, the Company’s property and equipment consisted of the following (table in thousands):

	March 31, 2026		December 31, 2025
Machinery and Equipment	$	10,273	$	11,340
Information Technology & Office Equipment	1,686		1,717
Leasehold Improvements	1,378		1,567
Laboratory Equipment	725		726
Total Property and Equipment	14,062		15,350
Accumulated Depreciation and Amortization	(9,734)		(10,721)
Property and Equipment, net	$	4,328	$	4,629

During the three months ended March 31, 2026, the Company disposed of certain property and equipment, resulting in the derecognition of $1.7 million of gross assets and $1.4 million of accumulated depreciation, proceeds of $0.2 million from asset sales, and a net loss on disposal of $0.2 million. Depreciation and amortization expense for each of the three months ended March 31, 2026 and 2025 was $0.4 million.

10.  Accrued Liabilities

Accrued liabilities as of March 31, 2026 and December 31, 2025 consisted of the following (table in thousands):

	March 31, 2026		December 31, 2025
Accrued Compensation and Benefits	$	1,344	$	2,558
Accrued Unvouchered Receipts	880		814
Accrued Workers Compensation	79		84
Other Accrued Liabilities	857		881
Total Accrued Liabilities	$	3,160	$	4,337

11.  Stockholders’ Equity

Preferred Stock

On April 6, 2022, the Company and DaVita entered into the Securities Purchase Agreement (the "SPA"), which provided for the issuance by the Company of up to $15 million of preferred stock to DaVita, which was issued to DaVita during 2022 as Series X Preferred Stock and, by virtue, made DaVita a related party.

The Series X Preferred Stock was issued for a price of $1,000 per share (the "Face Amount"), subject to accretion at a rate of 1% per annum, compounded annually. If the Company’s common stock trades above $22.00 for a period of 30 calendar days, the accretion will thereafter cease. As of March 31, 2026, a total of $0.5 million of the Series X Preferred Stock had been accreted.

The Series X Convertible Preferred Stock is convertible to common stock at a rate equal to the Face Amount, divided by a conversion price of $11.00 per share (subject to adjustment for future stock splits, reverse stock splits and similar recapitalization events). As a result, each share of Series X Preferred Stock will initially convert into approximately 91 shares of common stock. DaVita’s right to convert to common stock is subject to a beneficial ownership limitation, which is initially set at 9.9% of the outstanding common stock, which limitation may be reset (not to exceed 19.9%) at DaVita’s option and upon providing prior written notice to the Company. In addition, any debt financing is limited by the terms of our SPA with DaVita. Specifically, until DaVita holds less than 50% of its original investment in the Company's Series X Convertible Preferred Stock, the Company may only incur additional debt in the form of a purchase money loan, a working capital line of up to $5 million or to refinance existing debt, unless DaVita consents.

Additionally, the Series X Preferred Stock has a deemed liquidation event and redemption clause which could be triggered if the sale of all or substantially all of the Company's assets relating to the Company's dialysis concentrates business line. Since the Series X Preferred Stock may be redeemed if certain assets are sold at the option of the holder, but is not mandatorily redeemable as the sale of the assets that would allow for redemption is within the control of the Company, the preferred stock has been classified as permanent equity and initially recognized at fair value of $15 million (the proceeds on the date of issuance) less issuance costs of $0.1 million, resulting in an initial value of $14.9 million. The Company will assess at each reporting period whether conditions have changed to now meet the mandatory redemption definition which could trigger liability classification.

As of each of March 31, 2026 and December 31, 2025, there were 2,000,000 shares of preferred stock, $0.0001 par value per share, authorized and 15,000 shares of preferred stock issued and outstanding.

Common Stock

As of March 31, 2026 and 2025, the Company reserved for issuance the following shares of common stock related to the potential exercise of employee stock options, unvested restricted stock, convertible preferred stock, and warrants (collectively, "common stock equivalents"):

	As of March 31,
Common Stock and Common Stock Equivalents:	2026	2025
Common Stock	39,470,299	34,257,903
Options to Purchase Common Stock	3,200,049	1,884,476
Unvested Restricted Stock Awards	—	891
Unvested Restricted Stock Units	1,073,330	383,326
Convertible Preferred Stock	1,405,001	1,391,045
Unvested Restricted Stock Units - Market Condition	717,000	—
Warrants to Purchase Common Stock	3,984,484	3,984,484
Total	49,850,163	41,902,125

Controlled Equity Offering

On April 8, 2022, the Company entered into a Sales Agreement (the "Sales Agreement") with Cantor Fitzgerald & Co. (the "Agent"), pursuant to which the Company may offer and sell from time to time shares of Company’s common stock through the Agent pursuant to the Company’s shelf registration statement on Form S-3 (No. 333-259923) filed with the SEC on September 30, 2021 (the “Prior Registration Statement”).

This Prior Registration Statement expired on October 8, 2024 and, upon the effectiveness of the new registration statement on October 21, 2024, was deemed terminated. On November 13, 2024, in connection with the new registration statement, the Company filed a prospectus supplement covering the offer and sale of an aggregate offering price of up to $25.0 million of shares of the Company's common stock through the Agent under the Sales Agreement (as amended, the "ATM facility"). The offering and sale of such shares has been registered under the Securities Act of 1933, as amended.

During the three months ended March 31, 2026, no shares were sold pursuant to the Sales Agreement. Approximately $13.1 million remains available for sale under the ATM facility.

Warrant Issuance

In connection with the execution of the Third Amendment, as defined and described in Note 15, on January 2, 2024, the Company issued to Innovatus a warrant to purchase 191,096 shares of the Company’s common stock with an exercise price of $1.83 per share. The warrant may be exercised on a cashless basis, and is immediately exercisable through January 2, 2029. The number of shares of common stock for which the warrant is exercisable and the exercise price are subject to certain proportional adjustments as set forth in the Third Amendment. The warrant is equity-classified with a fair value of approximately $0.2 million at issuance, which was treated as a debt issuance cost and will be amortized through interest expense over the remaining contractual term of the Term Loans, as defined and described in Note 15.

On July 10, 2023, the Company entered into a letter agreement (the “Letter Agreement”) with Armistice Capital Master Fund Ltd. (“Armistice”), in which Armistice would receive a “reload” warrant (the “Reload Warrant”) to purchase 3,750,000 shares of Common Stock with an exercise price of $5.13 per share, the closing price as reported by the Nasdaq Capital Market on July 7, 2023. The Reload Warrant may be exercised at all times prior to the 54 months anniversary of its issuance date. The Reload Warrant provides that a holder (together with its affiliates) may not exercise any portion of the Reload Warrant to the extent that the holder would own more than 9.99% of the Company’s outstanding Common Stock immediately after exercise, as such percentage ownership is determined in accordance with the terms of such warrant.

10

ROCKWELL MEDICAL, INC. AND SUBSIDIARIES

Notes to Condensed Consolidated Financial Statements

(Unaudited)

12.  Stock-Based Compensation

The Company recognized total stock-based compensation expense during the three months ended March 31, 2026 and 2025 as follows (table in thousands):

	Three Months Ended March 31,
	2026		2025
Service-based Awards:
Restricted Stock Units	$	193	$	294
Stock Option Awards	286		151
Total	$	479	$	445

Performance-based Restricted Stock Awards

A summary of the Company’s performance-based restricted stock awards during the three months ended March 31, 2026 is as follows:

Performance-based Restricted Stock Awards	Number of Shares	Weighted Average Grant-Date Fair Value
Unvested at January 1, 2026	891	$	62.70
Forfeited	(891)	$	62.70
Unvested at March 31, 2026	—	$	—

Performance-based restricted stock awards are measured based on their fair value on the date of grant and amortized over the vesting period of 20 months. As of March 31, 2026, there is no unrecognized stock-based compensation expense related to performance-based restricted stock awards.

Restricted Stock Units - Market Condition

In May 2025, the Company granted 717,000 restricted stock units with a market condition ("RSU-MC") under its Amended and Restated 2018 Long Term Incentive Plan with a grant date fair value of $0.6 million. The RSU-MCs are subject to both service and market based vesting conditions.

The RSU-MCs will vest, subject to the recipient's continued employment through the vesting date, if the average closing price of the Company's common stock equals or exceeds $2.14 per share for any consecutive 60-day trading period occurring prior to the third anniversary of the grant date. Except in the event of a change in control or termination due to death or disability, no portion of the award will vest before the first anniversary of the grant date. The RSU-MCs qualify as equity instruments and are accounted for under ASC 718, Compensation, Stock Compensation.

The unrecognized stock-based compensation expense recorded in connection with the RSU-MCs was $0.4 million at March 31, 2026, which is expected to be recognized over the next 2.14 years.

Service-based Restricted Stock Units

There were no service-based restricted stock units granted during the three months ended March 31, 2026 or 2025.

A summary of the Company’s service-based restricted stock units during the three months ended March 31, 2026 is as follows:

Service-based Restricted Stock Units	Number of Shares	Weighted Average Grant-Date Fair Value
Unvested at January 1, 2026	1,156,660	$	1.11
Vested	(83,330)	1.39
Unvested at March 31, 2026	1,073,330	$	1.09

11

ROCKWELL MEDICAL, INC. AND SUBSIDIARIES

Notes to Condensed Consolidated Financial Statements

(Unaudited)

The fair value of service-based restricted stock units is measured on the date of grant and amortized over the vesting period. The vesting periods range from one to three years. As of March 31, 2026, the unrecognized stock-based compensation expense was $0.5 million, which is expected to be recognized over the next 1.02 years.

Service-based Stock Option Awards

There were no service-based stock option awards granted during the three months ended March 31, 2026 or 2025.

A summary of the Company’s service-based stock option activity for the three months ended March 31, 2026 is as follows:

Service-based Stock Option Awards	Shares Underlying Options	Weighted Average Exercise Price		Weighted Average Remaining Contractual Term	Aggregate Intrinsic Value (in thousands)
Outstanding at January 1, 2026	3,276,564	$	2.64
Forfeited	(43,832)	1.19
Expired	(32,683)	10.32
Outstanding at March 31, 2026	3,200,049	$	2.56	7.83	$	3
Exercisable at March 31, 2026	1,182,664	$	4.77	6.44	$	—

The aggregate intrinsic value is calculated as the difference between the closing price of the Company's common stock at the date indicated and the exercise price of the stock options that had strike prices below the closing price.

As of March 31, 2026, total stock-based compensation expense related to unvested options not yet recognized totaled approximately $0.7 million, which is expected to be recognized over the next 2.06 years.

13.  Commitments and Contingencies

From time to time, the Company has been or may become a party to various disputes, legal actions, proceedings and investigations involving claims incidental to the conduct of its business, including actions by customers, employees, government entities and third parties. Due to the contract-intensive nature of the Company's business, the Company has been or may in the future become involved in disputes or legal actions with its contract counterparties, which could have a negative impact on the Company's business, results of operations or financial condition.

Product License Agreements

The Company is a party to a Licensing Agreement between the Company and Charak, LLC ("Charak") dated January 7, 2002 (the "2002 Agreement") that grants the Company exclusive worldwide rights to certain patents and information related to its Triferic product. On October 7, 2018, the Company entered into a Master Services and IP Agreement (the “Charak MSA”) with Charak and Dr. Ajay Gupta, a former Officer of the Company. Pursuant to the Charak MSA, the parties entered into three additional agreements related to the license of certain soluble ferric pyrophosphate (“SFP”) intellectual property owned by Charak. These agreements granted the Company an exclusive, worldwide, non-transferable license to SFP for the purpose of commercializing (i) SFP for the treatment of patients with renal failure, (ii) certain intravenous-delivered products incorporating SFP for the treatment of iron disorders, and (iii) certain TPN products incorporating SFP. The potential milestone payments are not considered probable, and no milestone payments have been accrued as of March 31, 2026 and December 31, 2025.

14.  Leases

Rockwell leases its production facilities and administrative offices as well as certain equipment used in its operations including leases on transportation equipment used in the delivery of its products. The lease terms range from monthly to six years. Rockwell occupies a 51,000 square foot facility and a 17,500 square foot facility in Wixom, Michigan under a lease expiring in August 2027. Rockwell also occupies a 51,000 square foot facility in Grapevine, Texas. The lease, which previously expired in December 2025, was extended in January 2026 for a 62-month term through February 2031, resulting in the recognition of a right-of-use asset and corresponding lease liability of approximately $2.5 million. Additionally, Rockwell occupies a lease for a 16,800 square foot storage facility in Allentown, Pennsylvania, that expires in April 2030.

The following summarizes quantitative information about the Company’s operating and finance leases (table in thousands):

	Three Months Ended March 31,
	2026		2025
Operating Leases
Operating Lease Cost	$	523	$	426
Variable Lease Cost	70		128
Operating Lease Expense	593		554
Finance Leases
Amortization of Right-of-Use Assets	102		139
Interest on Lease Obligations	12		23
Finance Lease Expense	114		162
Short-term Lease Rent Expense	5		5
Total Lease Expense	$	712	$	721
Other Information
Operating Cash Flows from Operating Leases	$	419	$	433
Operating Cash Flows from Finance Leases	$	12	$	23
Financing Cash Flows from Finance Leases	$	115	$	146

	March 31,
	2026		2025
Weighted-average Remaining Lease Term – Operating Leases	3.8		2.2
Weighted-average Remaining Lease Term – Finance Leases	1.4		2.2
Weighted-average Discount Rate – Operating Leases	9.8	%	6.2	%
Weighted-average Discount Rate – Finance Leases	6.8	%	6.4	%

Future minimum rental payments under operating and finance lease agreements are as follows (table in thousands):

	Operating		Finance
Year ending December 31, 2026 (Remaining)	$	1,398	$	378
Year ending December 31, 2027	1,533		311
Year ending December 31, 2028	973		—
Year ending December 31, 2029	953		—
Year ending December 31, 2030	794		—
Remaining future payments	117		—
Total	5,768		689
Less Present Value Discount	(1,016)		(31)
Operating and Finance Lease Liabilities	$	4,752	$	658

12

ROCKWELL MEDICAL, INC. AND SUBSIDIARIES

Notes to Condensed Consolidated Financial Statements

(Unaudited)

15. Loan and Security Agreement

On March 16, 2020, the Company and Rockwell Transportation, Inc., as Borrowers, entered into a Loan and Security Agreement (the "Loan Agreement") with Innovatus, as collateral agent and the lenders party thereto, pursuant to which Innovatus, as a lender, agreed to make certain term loans to the Company. In connection with each funding of the Term Loans, the Company issued to Innovatus a warrant (each a “Warrant”, and together the “Warrants”) to purchase a number of shares of the Company’s common stock equal to 3.5% of the principal amount of the relevant Term Loans funded divided by the exercise price. In connection with the first tranche of the Term Loans, the Company issued a Warrant to Innovatus, exercisable for an aggregate of 43,388 shares of the Company’s common stock at an exercise price of $18.15 per share. The Warrant may be exercised on a cashless basis and is immediately exercisable through the seventh anniversary of the applicable funding date. The number of shares of common stock for which the Warrant is exercisable and the associated exercise price are subject to certain proportional adjustments as set forth in such Warrant. The Company evaluated the warrant under ASC 470, Debt, and recognized an additional debt discount of approximately $0.5 million based on the relative fair value of the base instruments and warrants. The Company calculated the fair value of the Warrant using the Black-Scholes model.

On January 2, 2024, the Company entered into the Third Amendment to and Restatement of the Loan and Security Agreement (the "Third Amendment") with Innovatus, dated January 1, 2024 (the "Effective Date"). The Third Amendment provides for the continuation of term loans initially borrowed under the Loan Agreement amounting to $8.0 million as of January 1, 2024. The Company will make interest-only payments on the Term Loans for 36 months as certain conditions in the Third Amendment were met. The Company will make equal monthly payments of principal, together with applicable interest, in arrears, starting February 1, 2027. The Term Loans will mature on January 1, 2029. Effective on January 1, 2024, the Term Loans bear interest equal to the sum of (i) the greater of (a) Prime Rate (as defined in the Third Amendment) and (b) 7.50% plus (ii) 3.50%. At the Company's option, 2.00% of the interest due on any applicable interest payment date during the interest-only period may be paid in-kind by adding such amount to the then outstanding principal balance of the Term Loans. The Company also owes an additional fee equal to 4.375% of the funded amount of the Term Loans, or $1.0 million (such additional fee, the "Final Fee") at maturity. The Company is accreting up to this Final Fee premium with a charge against interest expense on the accompanying condensed consolidated statements of operations. The Term Loans may be voluntarily prepaid in full (but not partially) at any time, upon at least seven business days’ prior notice. In connection with any voluntary prepayment or satisfaction of the Term Loans prior to the maturity date (including any acceleration), the Company will pay all accrued and unpaid interest and all other amounts due in connection with the Term Loans, together with (x) a prepayment fee (the “Prepayment Fee”) equal to: (i) 1.0% of the principal amount of the Term Loans prepaid if the payment is made after January 1, 2026 but on or before January 1, 2027; or (ii) 0% of the principal amount of the Term Loans prepaid if the payment is made after January 1, 2027 through maturity, and (y) the Final Fee. The Term Loans will be mandatorily prepaid upon a change in control of the Company, or upon any early termination/acceleration of the Term Loans. In the event of a mandatory prepayment of the Term Loans, the Company shall be required to pay the Prepayment Fee (if applicable), as well as the Final Fee. The Third Amendment was treated as a modification for accounting purposes.

The Third Amendment contains various financial covenants and customary representations and warranties and affirmative and negative covenants, subject to exceptions as described in the Third Amendment. The Company's ability to comply with the covenants under the Third Amendment may be adversely affected by events beyond its control. If the Company is unable to comply with the covenants under the Third Amendment, it would pursue all available cure options in order to regain compliance. However, the Company may not be able to mutually agree with Innovatus on appropriate remedies to cure a future breach of a covenant, which could give rise to an event of default. As of March 31, 2026, the Company was in compliance with all covenants under the Third Amendment.

In connection with the execution of the Third Amendment, on January 2, 2024, the Company issued a warrant to purchase shares of the Company’s common stock. The warrant is equity-classified with a fair value of $0.2 million at issuance, which was treated as a debt issuance cost and is being amortized through interest expense over the remaining contractual term of the Term Loans. For additional information, see Note 11.

The effective interest rate used to amortize the debt issuance cost relating to these warrants is 11.0% as of March 31, 2026. As of March 31, 2026, the outstanding balance of the Term Loans was $8.9 million, net of aggregate unamortized issuance costs, discounts and premiums of $1.3 million. For both of the three months ended March 31, 2026 and 2025, interest expense, including paid-in-kind interest, amounted to $0.3 million.

The Loan Agreement is secured by all assets of the Company and Rockwell Transportation, Inc. and contains customary representations and warranties and covenants, subject to customary carve outs, and initially included financial covenants related to liquidity and sales of Triferic.

The following table reflects the schedule of principal payments on the Term Loans as of March 31, 2026 (table in thousands):

Year	Principal Payments
2026 (Remaining)	$	—
2027	3,871
2028	4,223
2029 (Inclusive of Final Fee)	1,336
Total Debt Maturities	9,430
Unamortized Issuance Costs and Discount	(516)
Total Debt Maturities, net of Unamortized Issuance Costs and Discount	8,914
Less: Current Portion of Term Loans	(707)
Term Loans, net	$	8,207

16. Insurance Financing Note Payable

On June 3, 2025, the Company entered into a short-term note payable with a principal amount of $0.7 million, bearing interest at a rate of 7.14% per annum to finance various insurance policies, which required an upfront payment of $0.2 million. Principal and interest payments related to this note began on July 3, 2025 and are being paid in 10 equal monthly payments of $0.1 million, with the final payment due on April 3, 2026. As of March 31, 2026, the Company's insurance financing note payable balance was $0.1 million.

On June 4, 2024, the Company entered into a short-term note payable with a principal amount of $0.7 million, bearing interest at a rate of 7.89% per annum to finance various insurance policies, which required an upfront payment of $0.2 million. Principal and interest payments related to this note began on July 3, 2024 and were paid in 10 equal monthly payments of $0.1 million, with the final payment paid on April 3, 2025.

13

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

The following discussion and analysis should be read in conjunction with our condensed consolidated financial statements and related notes in “Item 1. Condensed Consolidated Financial Statements”. References in this report to “Rockwell,” the “Company,” “we,” “our” and “us” are references to Rockwell Medical, Inc. and its subsidiaries.

Forward-Looking Statements

We make forward-looking statements in this report and may make such statements in future filings with the U.S. Securities and Exchange Commission ("SEC"). We may also make forward-looking statements in our press releases or other public or shareholder communications. Our forward-looking statements are subject to risks and uncertainties and include information about our current expectations and possible or assumed future results of our operations. When we use words such as “may,” “might,” “will,” “should,” “believe,” “expect,” “anticipate,” “estimate,” “continue,” “could,” “plan,” “potential,” “predict,” “forecast,” “project,” “intend,” “is focused on” or similar expressions, or make statements regarding our intent, belief, or current expectations, we are making forward-looking statements. Our forward looking statements also include, without limitation, statements about our liquidity and capital resources; our ability to continue as a going concern; the size of the hemodialysis concentrates market opportunity; our ability to successfully execute on our business strategy, including our commercial focus; our ability to raise additional capital; our ability to successfully implement certain cost containment and cost-cutting measures; our ability to achieve and maintain profitability and statements regarding our anticipated future financial condition, operating results, cash flows and business plans.

While we believe our forward-looking statements are reasonable, you should not place undue reliance on any such forward-looking statements, which are based on information available to us on the date of this report or, if made elsewhere, as of the date made. Because these forward-looking statements are based on estimates and assumptions that are subject to significant business, economic and competitive uncertainties, many of which are beyond our control or are subject to change, actual results could be materially different. Factors that might cause such a difference include, without limitation, the risks and uncertainties discussed in this report, “Item 1A — Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2025 and from time to time in our other reports filed with the SEC.

Other factors not currently anticipated may also materially and adversely affect our results of operations, cash flow and financial position. There can be no assurance future results will meet expectations. Forward-looking statements speak only as of the date of this report and we expressly disclaim any intent to update or alter any statements whether as a result of new information, future events or otherwise, except as may be required by applicable law.

Overview

Rockwell is a healthcare company that develops, manufactures, commercializes, and distributes a portfolio of hemodialysis products for dialysis providers worldwide.

Rockwell is a supplier of liquid and dry, acid and bicarbonate concentrates for dialysis patients. Hemodialysis is the most common form of end-stage kidney disease treatment and is typically performed in freestanding outpatient dialysis centers, hospital-based outpatient centers, skilled nursing facilities, or a patient’s home. This represents a large market opportunity for which we believe Rockwell's products are well-positioned to meet the needs of patients.

We currently operate in one market segment, the hemodialysis market, which involves the manufacturing, sale and distribution of hemodialysis products to hemodialysis clinics, including dialysis concentrates, dialysis kits and other ancillary products used in the dialysis process. Rockwell currently serves approximately 300 customers, highlighted by all five of the leading dialysis providers in the United States, including Fresenius and DaVita. Rockwell's customer mix is diverse, with most customer sales concentrations under 10%. Dialysate concentrates accounted for 100% of our revenue for the quarter ended March 31, 2026, of which approximately 84% of our sales was to distributors and customers for use in the United States.

Our commercial organization supports the Company's vision to focus its efforts on driving Rockwell Medical toward sustainable profitability. Our commercial team is focused on expanding revenue within our current customer base and seeking to grow revenue through the addition of new accounts to increase Rockwell's overall market share within the hemodialysis concentrates sector. We focus on creating long-term partnerships with customers, securing appropriate pricing for our products, and delivering high-quality product to our customers for use with their patients.

Rockwell's products are vital to vulnerable patients with end-stage kidney disease. We are an established leader in manufacturing and delivering high-quality hemodialysis concentrates and dialysates, along with certain ancillary products, to dialysis providers and distributors in the United States and abroad. Rockwell provides the hemodialysis community with products controlled by a Quality Management System regulated by the U.S. Food and Drug Administration ("FDA"). Rockwell is ISO 13485 Certified and adheres to current Good Manufacturing Practices ("cGMP") and Association for Advancement of Medical Instrumentation ("AAMI") standards. Rockwell manufactures hemodialysis concentrates at its facilities in Michigan and Texas, and manufactures its dry acid concentrate mixers at its facility in Iowa.

Rockwell delivers the majority of its hemodialysis concentrates products and mixers to dialysis clinics throughout the United States and internationally, utilizing its own delivery trucks and third-party carriers. Rockwell has developed a core expertise in manufacturing and delivering hemodialysis concentrates, and has built a longstanding reputation for reliability, quality, and excellent customer service.

Rockwell continues to upgrade its manufacturing equipment to streamline production and improve margins, renegotiated pricing with key suppliers, and entered into several multi-year customer purchase agreements.

On September 18, 2023, Rockwell and DaVita, Inc. ("DaVita") entered into an Amended and Restated Products Purchase Agreement (the "Amended Agreement"), under which the Company supplies DaVita with certain dialysis concentrates. The term of the Amended Agreement was scheduled to expire on December 31, 2024. Prior to the expiration, the Company received written notice from DaVita that DaVita intended to extend the term of the Amended Agreement through December 31, 2025 (the "Extension Term"). Subsequently, DaVita indicated that it would completely transition to another supplier, subject to further discussions between Rockwell and DaVita. Additionally, DaVita agreed to quarterly, non-refundable payments totaling $2.0 million to ensure supply continuity for products purchased during the year ended December 31, 2025. These quarterly, non-refundable payments of $0.9 million was recorded as revenue during the three months ended March 31, 2025. While DaVita did significantly reduce its product purchases from Rockwell, it did not completely transition its business to a different supplier. On December 31, 2025, the Company and DaVita entered into a second amendment (the "Second Amendment") to the Amended Agreement which extended the term of the Amended Agreement by one additional year to December 31, 2026 (the "Second Extension Term"). The Second Amendment also provides for a price increase on the products sold under the Amended Agreement for the Second Extension Term.

Results of Operations for the Three Months Ended March 31, 2026 and 2025

The following table summarizes our operating results for the periods presented below (dollars in thousands):

	Three Months Ended March 31,
	2026		% of Revenue		2025		% of Revenue		% Change
Net Sales	$	17,336			$	18,914			(8)	%
Cost of Sales	14,439		83	%	15,872		84	%	(9)	%
Gross Profit	2,897		17	%	3,042		16	%	(5)	%
Selling and Marketing	567		3	%	711		4	%	(20)	%
General and Administrative	3,810		22	%	3,691		20	%	3	%
Operating Loss	$	(1,480)	(8)	%	$	(1,360)	(8)	%	9	%

Net Sales

During the three months ended March 31, 2026, net sales were $17.3 million compared to net sales of $18.9 million during the three months ended March 31, 2025. The decrease of $1.6 million was primarily due to a $3.9 million reduction in sales to DaVita, which included a $0.9 million price adjustment in 2025 that did not repeat in 2026, partially offset by an increase of $2.6 million from price increases to other existing customers and sales to new customers. Net sales of non-product revenue were $0.3 million for the three months ended March 31, 2025 from the recognition of the remaining deferred revenue associated with Triferic licenses. DaVita represented 7% and 27% of net sales for the three months ended March 31, 2026 and 2025, respectively.

14

Cost of Sales and Gross Profit

Cost of sales for the three months ended March 31, 2026 was $14.4 million, resulting in gross profit of $2.9 million for the three months ended March 31, 2026, compared to cost of sales of $15.9 million and a gross profit of $3.0 million for the three months ended March 31, 2025. The gross profit decrease of $0.1 million was primarily due to (i) a $0.9 million decline due to a price adjustment for DaVita purchases for the three months ended March 31, 2025 that did not repeat in 2026, (ii) a $0.9 million increase as a result of lower manufacturing costs due to a decrease in production headcount and overhead and (iii) a decrease of $0.1 million in gross profit related to the recognition of remaining deferred revenue associated with Triferic licenses in the three months ended March 31, 2025.

Selling and Marketing Expense

Selling and marketing expenses for the three months ended March 31, 2026 were $0.6 million compared to $0.7 million during the three months ended March 31, 2025. The decrease was due to $0.1 million of lower compensation expense as a result of lower headcount.

General and Administrative Expense

General and administrative expenses were $3.8 million for the three months ended March 31, 2026, compared to $3.7 million for the three months ended March 31, 2025. The increase of $0.1 million was driven by higher compensation expense.

Other Expense

Total other expense of $0.1 million and $0.2 million for the three months ended March 31, 2026 and 2025, respectively, was driven primarily by interest expense of $0.2 million in each period related to our debt facility (See Note 15 to the condensed consolidated financial statements included elsewhere in this Form 10-Q). The interest expense for the three months ended March 31, 2026 was partially offset by $0.1 million of realized gains on available-for-sale investments.

Liquidity and Capital Resources

As of March 31, 2026, we had approximately $23.9 million of cash, cash equivalents and investments available-for-sale, and net working capital of $27.1 million. Based on the currently available net working capital along with the expectation of management of its ability to execute on its operational plans as discussed below, management believes the Company currently has sufficient funds to meet its operating requirements for at least the next twelve months from the date of the filing of this report.

Additionally, the Company's operational plans include raising capital, if needed, by using the $13.1 million remaining availability under its at-the-market ("ATM") facility or other methods or forms of financings, subject to existing limitations. Under the ATM, we have the ability to control the timing and floor price at which capital is raised.

The actual amount of cash that we will need to execute our business strategy is subject to many factors, including, but not limited to, the costs associated with our manufacturing and transportation operations related to our concentrate business.

We may elect to raise capital in the future through one or more of the following: (i) equity and debt raises through the equity and capital markets, though there can be no assurance we will be able to secure additional capital or funding on acceptable terms, or if at all; and (ii) strategic transactions, including potential alliances and collaborations focused on markets outside the United States, as well as potential combinations (including by merger or acquisition) or other corporate transactions.

We believe our ability to fund our activities in the long term will be highly dependent upon (i) our ability to execute on the growth strategy of our hemodialysis concentrates business and maintain sales with existing customers, (ii) our ability to achieve sustained profitability and (iii) our ability to identify, develop, in-license, or acquire new products in developing our product portfolio. All of these strategies are subject to significant risks and uncertainties such that there can be no assurance we will be successful in achieving them. If we are unsuccessful in executing our business plan and we are unable to raise the required capital, we may be forced to curtail all of our activities and, ultimately, cease operations. Even if we are able to raise sufficient capital, such financings may only be available on unattractive terms, or result in significant dilution of stockholders’ interests and, in such event, the market price of our common stock may decline.

If the Company attempts to obtain additional debt or equity financing, the Company cannot assume such financing will be available on favorable terms, if at all. In addition, any debt financing is limited by the terms of our Securities Purchase Agreement with DaVita. Specifically, until DaVita owns less than 50% of its investment, the Company may only incur additional debt in the form of a purchase money loan, a working capital line of up to $5.0 million or to refinance existing debt, unless DaVita consents.

The Company is subject to certain covenants and cure provisions under its Loan and Security Agreement (the "Loan Agreement") with Innovatus Life Sciences Lending Fund I, LP. As of March 31, 2026, the Company was in compliance with all covenants. On January 2, 2024, the Loan Agreement was amended to include, among other things, an interest-only period for 30 months, or up to 36 months if certain conditions are met, and extend the maturity date to January 1, 2029 (See Note 15 to the accompanying condensed consolidated financial statements).

The global macroeconomic environment is uncertain, and could be negatively affected by, among other things, changes in U.S. trade policies, including tariffs and other trade restrictions or the threat of such actions, instability in the global capital and credit markets, supply chain weaknesses, and instability in the geopolitical environment, including as a result of the Russian invasion of Ukraine, the Middle East conflicts and other political tensions, and the occurrence of natural disasters and public health crises. Such challenges have caused, and may continue to cause, recession fears, rising interest rates, foreign exchange volatility and inflationary pressures. At this time, the Company is unable to quantify the potential effects of this economic instability on our future operations. Due to the rapidly evolving nature of the global situation, it is not possible to predict the extent to which these conditions could adversely affect the Company's liquidity and capital resources in the future.

On July 4, 2025, the U.S. enacted P.L. 119-21, a U.S. federal statute passed by the 119th United States Congress that includes tax and spending policies (the “Act”), which contains a broad range of tax reform provisions affecting businesses, including extending or reinstating certain provisions of the 2017 Tax Cuts and Jobs Act, tax relief measures, modifications of certain energy tax credits granted under the Inflation Reduction Act and limits on various tax deductions, among other key provisions. The Company evaluated the Act and concluded it will not have a material impact on its condensed consolidated financial statements.

Cash Used In Operating Activities

Net cash used in operating activities was $0.2 million for the three months ended March 31, 2026 compared to net cash used in operating activities of $3.5 million for the three months ended March 31, 2025. The decrease in cash used in operating activities during the current period as compared to the prior period was primarily due to a decrease in cash used in changes in current balance sheet accounts in the ordinary course of business of approximately $3.5 million, partially offset by increases in cash used from (i) net loss of approximately $0.1 million and (ii) non-cash adjustments of $0.1 million.

Cash Used In Investing Activities

Net cash used in investing activities was $0.1 million during the three months ended March 31, 2026. Net cash used in investing activities was immaterial for the three months ended March 31, 2025. Net cash used in investing activities during the three months ended March 31, 2026 and 2025 was primarily driven by (i) purchases of property and equipment, net of $0.4 million and $0.1 million, respectively, partially offset by (ii) net cash proceeds from purchases and sales of our available-for-sale investments during each period of $0.1 million.

Cash Used In Financing Activities

Net cash used in financing activities was $0.8 million during both of the three months ended March 31, 2026 and 2025. Net cash used in financing activities during the three months ended March 31, 2026 and 2025 was primarily due to (i) the cash paid in connection with the Evoqua Asset Acquisition deferred consideration obligation of $0.5 million and $0.4 million, respectively, (ii) $0.2 million of payments under the insurance financing note payable during each period and (iii) $0.1 million of payments on finance lease liabilities during each period.

Contractual Obligations and Other Commitments

Due to the contract-intensive nature of the Company's business, the Company has been and may in the future become involved in disputes or legal actions with its contract counterparties, which could have a negative impact on the Company's business, results of operations or financial condition. See Note 13 to the condensed consolidated financial statements included elsewhere in this Form 10-Q for additional disclosures. There have been no other material changes from the contractual

obligations and other commitments disclosed in Notes 13 and 14 to the consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2025.

Critical Accounting Policies and Significant Judgments and Estimates

Our critical accounting policies and significant estimates are detailed in our Annual Report on Form 10-K for the year ended December 31, 2025. There have been no material changes in our critical accounting policies and estimates as compared to the critical accounting policies and estimates disclosed in Management’s Discussion and Analysis of Financial Condition and Results of Operations included in our Annual Report on Form 10-K for the year ended December 31, 2025.

Recently issued and adopted accounting pronouncements:

We have evaluated all recently issued accounting pronouncements and believe such pronouncements do not have a material effect our financial statements. See Note 3 to the condensed consolidated financial statements included elsewhere in this Quarterly Report on Form 10-Q.

Item 3.  Quantitative and Qualitative Disclosures about Market Risk

Per §229.305 of Regulation S-K, the Company, designated a Smaller Reporting Company as defined in §229.10(f)(1) of Regulation S-K, is not required to provide the disclosure required by this Item.

Item 4.  Controls and Procedures

Evaluation of Disclosure Controls and Procedures

We maintain disclosure controls and procedures that are designed to ensure material information required to be disclosed in our reports we file or submit under the Exchange Act is recorded, processed, summarized, and reported within the time periods specified in the SEC’s rules and forms, and such information is accumulated and communicated to our management, including our Chief Executive Officer (Principal Executive Officer) and Chief Financial Officer (Principal Financial Officer) as appropriate, to allow timely decisions regarding required financial disclosure. In designing and evaluating the disclosure controls and procedures, we recognized that a control system, no matter how well designed and operated, can provide only reasonable, not absolute, assurance that the objectives of the control system are met. Because of the inherent limitations in all control systems, no evaluation of controls can provide absolute assurance that all control issues and instances of fraud, if any, within a company have been detected. Management was necessarily required to apply its judgment in evaluating the cost‑benefit relationship of possible controls and procedures.

Under the supervision of and with the participation of our management, including the Company’s Chief Executive Officer and Chief Financial Officer, we evaluated the effectiveness of our disclosure controls and procedures (as such terms are defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act) as of March 31, 2026. Based upon that evaluation, our Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures were effective as of March 31, 2026.

Changes in Internal Control over Financial Reporting

There were no changes in our internal control over financial reporting in connection with the evaluation required by Rule 13a-15(d) of the Exchange Act that occurred during the period covered by this Quarterly Report on Form 10-Q that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

PART II – OTHER INFORMATION

Item 1.  Legal Proceedings

We may be involved in certain routine legal proceedings from time to time before various courts and governmental agencies. We cannot predict the final disposition of such proceedings. We regularly review legal matters and record provisions for claims considered probable of loss. The resolution of these pending proceedings is not expected to have a material effect on our operations or consolidated financial statements in the period in which they are resolved.

15

Item 1A. Risk Factors

Our business is subject to various risks, including those described in Part I, Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2025. There have been no material changes to the risk factors set forth in our Annual Report on Form 10-K for the year ended December 31, 2025 under "Item 1A - Risk Factors."

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

None.

Item 3. Defaults Upon Senior Securities.

None.

Item 4. Mine Safety Disclosures.

Not applicable.

Item 5. Other Information.

None.

Item 6. Exhibits

The exhibits filed or furnished as part of this Quarterly Report on Form 10-Q are set forth on the Exhibit Index, which Exhibit Index is incorporated herein by reference.

EXHIBIT INDEX
Exhibit No.	Description
31.1*	Certification pursuant to Rule 13a-14(a) of the Securities Exchange Act of 1934
31.2*	Certification pursuant to Rule 13a-14(a) of the Securities Exchange Act of 1934
32.1**	Certification pursuant to 18 U.S.C. Section 1350 and Rule 13a-14(b) of the Securities Exchange Act of 1934
101.INS*	XBRL Instance Document
101.SCH*	XBRL Taxonomy Extension Schema
101.CAL*	XBRL Taxonomy Extension Calculation Linkbase
101.DEF*	XBRL Taxonomy Extension Definition Database
101.LAB*	XBRL Taxonomy Extension Label Linkbase
101.PRE*	XBRL Taxonomy Extension Presentation Linkbase
104*	The cover page from the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2026, formatted in Inline XBRL (included as Exhibit 101)
*	Filed herewith
**	Furnished herewith and not deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and shall not be deemed to be incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Exchange Act

16

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.

	ROCKWELL MEDICAL, INC.
	(Registrant)
Date: May 7, 2026		/s/ Mark Strobeck
		Mark Strobeck, Ph.D. President, Chief Executive Officer and Director (Principal Executive Officer)

17

EX-31.1

Exhibit 31.1

CERTIFICATION PURSUANT TO RULE 13a‑14(a)

I, Mark Strobeck, certify that:

1.have reviewed this quarterly report on Form 10‑Q of Rockwell Medical, Inc.;

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.The registrant’s other certifying officer(s) and I are 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)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.The registrant’s other certifying officer(s) and I have disclosed, based on our 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 7, 2026
	/s/ Mark Strobeck Mark Strobeck (Principal Executive Officer)

EX-31.2

Exhibit 31.2

CERTIFICATION PURSUANT TO RULE 13a‑14(a)

I, Jesse Neri, certify that:

1.have reviewed this quarterly report on Form 10‑Q of Rockwell Medical, Inc.;

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.The registrant’s other certifying officer(s) and I are 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)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.The registrant’s other certifying officer(s) and I have disclosed, based on our 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 7, 2026
	/s/ Jesse Neri Jesse Neri (Principal Financial Officer)

EX-32.1

EXHIBIT 32.1

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Rockwell Medical, Inc. (the “Company”) on Form 10‑Q for the quarter ending March 31, 2026 as filed with the Securities and Exchange Commission on the date hereof (the “Periodic Report”), each of the undersigned, in the capacities and on the dates indicated below, hereby certifies pursuant to 18 U.S.C. §1350, as adopted pursuant to §906 of the Sarbanes-Oxley Act of 2002, that based on my knowledge:

1.the Periodic Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2.the information contained in the Periodic Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

May 7, 2026	/s/ Mark Strobeck
	Mark Strobeck (Principal Executive Officer)

/s/ Jesse Neri

Jesse Neri

Chief Financial Officer

(Principal Financial Officer)

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Cover - 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	000-23661
Entity Registrant Name	ROCKWELL MEDICAL, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	38-3317208
Entity Address, Address Line One	30142 S. Wixom Road
Entity Address, City or Town	Wixom
Entity Address, State or Province	MI
Entity Address, Postal Zip Code	48393
City Area Code	248
Local Phone Number	960-9009
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Title of 12(b) Security	Common Stock, par value $0.0001
Trading Symbol	RMTI
Security Exchange Name	NASDAQ
Entity Common Stock, Shares Outstanding (in shares)		39,470,299
Entity Central Index Key	0001041024
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2026
Document Fiscal Period Focus	Q1

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UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
ASSETS
Cash and Cash Equivalents	$ 9,609	$ 10,711
Investments Available-for-Sale	14,281	14,286
Accounts Receivable, net	8,825	8,143
Inventory, net	3,055	3,424
Prepaid and Other Current Assets	1,173	1,599
Total Current Assets	36,943	38,163
Property and Equipment, net	4,328	4,629
Right of Use Assets - Operating, net	4,608	2,569
Right of Use Assets - Finance, net	549	651
Intangible Assets, net	9,518	9,656
Goodwill	921	921
Other Non-Current Assets	556	556
Total Assets	57,423	57,145
LIABILITIES AND STOCKHOLDERS’ EQUITY
Accounts Payable	3,446	1,999
Accrued Liabilities	3,160	4,337
Deferred Consideration - Current	500	1,000
Lease Liabilities - Operating - Current	1,451	1,155
Lease Liabilities - Finance - Current	468	469
Term Loans - Current - Net of Issuance Costs	707	0
Insurance Financing Note Payable	66	264
Customer Deposits	70	356
Total Current Liabilities	9,868	9,580
Lease Liabilities - Operating - Long-Term	3,301	1,454
Lease Liabilities - Finance - Long-Term	190	304
Term Loans - Long-Term, net of Issuance Costs	8,207	8,826
Total Liabilities	21,566	20,164
Commitments and Contingencies (see Note 13)
Stockholders' Equity:
Preferred Stock, $0.0001 par value, 2,000,000 shares authorized; 15,000 shares issued and outstanding at March 31, 2026 and December 31, 2025	0	0
Common Stock, $0.0001 par value; 170,000,000 shares authorized; 39,470,299 and 39,405,302 shares issued and outstanding at March 31, 2026 and December 31, 2025, respectively	4	4
Additional Paid-in Capital	440,317	439,838
Accumulated Deficit	(404,597)	(402,992)
Accumulated Other Comprehensive Income	133	131
Total Stockholders’ Equity	35,857	36,981
Total Liabilities and Stockholders’ Equity	$ 57,423	$ 57,145

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UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Mar. 31, 2026	Dec. 31, 2025
Statement of Financial Position [Abstract]
Preferred shares, par value (in dollars per share)	$ 0.0001	$ 0.0001
Preferred shares, shares authorized (in shares)	2,000,000	2,000,000
Preferred shares, shares issued (in shares)	15,000	15,000
Preferred shares, shares outstanding (in shares)	15,000	15,000
Common shares, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common shares, shares authorized (in shares)	170,000,000	170,000,000
Common shares, shares issued (in shares)	39,470,299	39,405,302
Common shares, shares outstanding (in shares)	39,470,299	39,405,302

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UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Income Statement [Abstract]
Net Sales	$ 17,336	$ 18,914
Cost of Sales	14,439	15,872
Gross Profit	2,897	3,042
Selling and Marketing	567	711
General and Administrative	3,810	3,691
Operating Loss	(1,480)	(1,360)
Other Income (Expense):
Realized Gain on Available-for-Sale Investments	120	56
Interest Expense	(282)	(277)
Interest Income	37	66
Total Other Expense, net	(125)	(155)
Net Loss	$ (1,605)	$ (1,515)
Basic Net (Loss) Income per Share (in dollars per share)	$ (0.04)	$ (0.04)
Diluted Net (Loss) Income per Share (in dollars per share)	$ (0.04)	$ (0.04)
Basic Weighted Average Shares Outstanding (in shares)	39,418,302	34,107,640
Diluted Weighted Average Shares Outstanding (in shares)	39,418,302	34,107,640

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UNAUDITED 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	$ (1,605)	$ (1,515)
Reclassification of Realized Gain on Available-for-Sale Investments Included in Net Loss	(120)	(56)
Unrealized Gain on Available-for-Sale Investments	122	62
Comprehensive Loss	$ (1,603)	$ (1,509)

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UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	PREFERRED STOCK	COMMON STOCK	ADDITIONAL PAID-IN CAPITAL	ACCUMULATED DEFICIT	ACCUMULATED OTHER COMPREHENSIVE INCOME
Beginning balance (in shares) at Dec. 31, 2024		15,000
Beginning balance at Dec. 31, 2024		$ 0
Beginning balance (in shares) at Dec. 31, 2024			34,056,920
Beginning balance at Dec. 31, 2024	$ 32,586		$ 3	$ 430,207	$ (397,678)	$ 54
Increase (Decrease) in Shareholders' Equity
Net Loss	(1,515)				(1,515)
Reclassification of Realized Gain on Available-for-Sale Investments	(56)					(56)
Unrealized Gain on Available-for-Sale Investments	62					62
Vesting of Restricted Stock Units Issued, net of Taxes Withheld (in shares)			200,983
Stock-based Compensation	$ 445			445
Ending balance (in shares) at Mar. 31, 2025		15,000
Ending balance at Mar. 31, 2025		$ 0
Ending balance (in shares) at Mar. 31, 2025	34,257,903		34,257,903
Ending balance at Mar. 31, 2025	$ 31,522		$ 3	430,652	(399,193)	60
Beginning balance (in shares) at Dec. 31, 2025	15,000	15,000
Beginning balance at Dec. 31, 2025	$ 0	$ 0
Beginning balance (in shares) at Dec. 31, 2025	39,405,302		39,405,302
Beginning balance at Dec. 31, 2025	$ 36,981		$ 4	439,838	(402,992)	131
Increase (Decrease) in Shareholders' Equity
Net Loss	(1,605)				(1,605)
Reclassification of Realized Gain on Available-for-Sale Investments	(120)					(120)
Unrealized Gain on Available-for-Sale Investments	122					122
Vesting of Restricted Stock Units Issued, net of Taxes Withheld (in shares)			64,997
Stock-based Compensation	$ 479			479
Ending balance (in shares) at Mar. 31, 2026	15,000	15,000
Ending balance at Mar. 31, 2026	$ 0	$ 0
Ending balance (in shares) at Mar. 31, 2026	39,470,299		39,470,299
Ending balance at Mar. 31, 2026	$ 35,857		$ 4	$ 440,317	$ (404,597)	$ 133

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UNAUDITED 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	$ (1,605)	$ (1,515)
Adjustments To Reconcile Net Loss To Net Cash Used In Operating Activities:
Depreciation and Amortization	511	539
Stock-based Compensation	479	445
Write-off of Inventory	0	178
Non-cash Lease Expense from Right of Use Assets	512	518
Amortization of Debt Financing Costs and Accretion of Debt Discount and Premium	88	88
Loss on Disposal of Assets	178	54
Realized Gain on Sale of Investments	(120)	(56)
Changes in Assets and Liabilities:
Accounts Receivable	(682)	(1,379)
Inventory	369	733
Prepaid and Other Assets	426	378
Accounts Payable	1,446	(944)
Lease Liabilities	(306)	(389)
Accrued and Other Liabilities	(1,463)	(1,662)
Deferred License Revenue	0	(475)
Net Cash Used In Operating Activities	(167)	(3,487)
Cash Flows From Investing Activities:
Purchases of Investments Available-for-Sale	(7,072)	(2,938)
Proceeds from Sales of Investments Available-for-Sale	7,200	3,000
Purchases of Equipment	(425)	(63)
Proceeds from Sale of Equipment	175	0
Net Cash Used In Investing Activities	(122)	(1)
Cash Flows From Financing Activities:
Payments on Insurance Financing Note Payable	(198)	(201)
Payments on Finance Lease Liabilities	(115)	(146)
Deferred Consideration Paid in Connection with Evoqua Asset Acquisition	(500)	(436)
Net Cash Used In Financing Activities	(813)	(783)
Net Decrease in Cash and Cash Equivalents	(1,102)	(4,271)
Cash and Cash Equivalents at Beginning of Period	10,711	15,662
Cash and Cash Equivalents at End of Period	9,609	11,391
Supplemental Disclosure of Cash Flow Information:
Cash Paid for Interest	193	190
Supplemental Disclosure of Noncash Investing and Financing Activities:
Right of Use Assets - Operating Obtained in Exchange for Lease Liabilities - Operating	2,450	0
Change in Unrealized Gain on Investments Available-for-Sale	$ 2	$ 5

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Description of Business

3 Months Ended

Mar. 31, 2026

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Description of Business

Description of Business

Rockwell Medical, Inc. (the "Company", "Rockwell", or "Rockwell Medical") is a healthcare company that develops, manufactures, commercializes, and distributes a portfolio of hemodialysis products for dialysis providers worldwide.

Rockwell is a supplier of liquid and dry, acid and bicarbonate concentrates for dialysis patients. Hemodialysis is the most common form of end-stage kidney disease treatment and is usually performed in freestanding outpatient dialysis centers, at hospital-based outpatient centers, skilled nursing facilities, or a patient’s home.

Rockwell manufactures hemodialysis concentrates under current Good Manufacturing Practices ("cGMP") at its two facilities in Michigan and Texas, and manufactures dry acid concentrate mixers at its facility in Iowa. Rockwell delivers the majority of its hemodialysis concentrates products and mixers to dialysis clinics throughout the United States and internationally utilizing its own delivery trucks and third-party carriers.

Rockwell was incorporated in the state of Michigan in 1996 and re-domiciled to the state of Delaware in 2019. Our headquarters is located at 30142 Wixom Road, Wixom, Michigan 48393. Our telephone number is (248) 960-9009 and our website is https://www.rockwellmed.com.

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Liquidity and Capital Resources

3 Months Ended

Mar. 31, 2026

Liquidity and Capital Resources [Abstract]

Liquidity and Capital Resources

Liquidity and Capital Resources

As of March 31, 2026, Rockwell had approximately $23.9 million of cash, cash equivalents and investments available-for-sale, and working capital of $27.1 million. Net cash used in operating activities for the three months ended March 31, 2026 was approximately $0.2 million. Based on the currently available working capital along with the expectation of management of its ability to execute on its operational plans as discussed below, management believes the Company currently has sufficient funds to meet its operating requirements for at least the next twelve months from the date of the filing of this report.

The Company continues to review its operational plans and execute on the acquisition of new customers, and has implemented cost containment activities. The Company may require additional capital to sustain its operations and make the investments it needs to execute its strategic plan. In addition, the Company's plans may include raising capital, if needed, by using the $13.1 million remaining on its at-the-market ("ATM") facility or other methods or forms of financings, subject to existing limitations. If the Company attempts to obtain additional debt or equity financing, the Company cannot assume such financing will be available on favorable terms, if at all.

The Company is subject to certain covenants and cure provisions under its Loan Agreement (as defined below in Note 15) with Innovatus Life Sciences Lending Fund I, LP ("Innovatus"), which, on January 2, 2024, was amended to include, among other things, an interest-only period for 30 months, or up to 36 months if certain conditions are met, and to extend the maturity date to January 1, 2029 (See Note 15 for further detail). The Company satisfied those conditions and will now make interest-only payments for the full 36 months. As of March 31, 2026, the Company is in compliance with all covenants.

The global macroeconomic environment is uncertain, and could be negatively affected by, among other things, changes in U.S. trade policies, including tariffs and other trade restrictions or the threat of such actions, instability in the global capital and credit markets, supply chain weaknesses, and instability in the geopolitical environment, including as a result of the Russian invasion of Ukraine, the conflicts in the Middle East and other political tensions, and the occurrence of natural disasters and public health crises. Such challenges have caused, and may continue to cause, recession fears, rising interest rates, foreign exchange volatility and inflationary pressures. At this time, the Company is unable to quantify the potential effects, if any, of this economic and political instability on its future operations.

Rockwell has utilized a range of financing methods to fund its operations in the past; however, current conditions in the financial and credit markets may limit the availability of funding, refinancing or increase the cost of funding. Due to the rapidly evolving nature of the global situation, it is not possible to predict the extent to which these conditions could adversely affect the Company's liquidity and capital resources in the future.

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Basis of Presentation, Summary of Significant Accounting Policies and Recent Accounting Pronouncements

3 Months Ended

Mar. 31, 2026

Accounting Policies [Abstract]

Basis of Presentation, Summary of Significant Accounting Policies and Recent Accounting Pronouncements

Basis of Presentation, Summary of Significant Accounting Policies and Recent Accounting Pronouncements

Basis of Presentation

The accompanying condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) for interim financial information and pursuant to the instructions to Form 10-Q and Rule 10-01 of Regulation S-X of the U. S. Securities and Exchange Commission (“SEC”) and on the same basis as the Company prepares its annual audited consolidated financial statements.

The condensed consolidated balance sheet at March 31, 2026, and the condensed consolidated statements of operations, comprehensive loss, changes in stockholders' equity, and cash flows for the three months ended March 31, 2026 and 2025 are unaudited, but include all adjustments, consisting of normal recurring adjustments the Company considers necessary for a fair presentation of the financial position, operating results, and cash flows for the periods presented. The results for the three months ended March 31, 2026 are not necessarily indicative of results to be expected for the year ending December 31, 2026 or for any future interim period. The condensed consolidated balance sheet at December 31, 2025 has been derived from audited financial statements; however, it does not include all of the information and notes required by U.S. GAAP for complete financial statements. The accompanying condensed consolidated financial statements should be read in conjunction with the audited financial statements for the year ended December 31, 2025 and notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2025 as filed with the SEC on March 26, 2026. The Company’s consolidated subsidiaries consist of its wholly-owned subsidiaries, Rockwell Transportation, Inc. and Rockwell Medical India Private Limited.

The accompanying condensed consolidated interim financial statements include the accounts of the Company and its subsidiaries. All material intercompany balances and transactions have been eliminated in consolidation.

Use of Estimates

The preparation of the condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that may affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Restructuring and Other Charges

In the third quarter of 2025, the Company concluded manufacturing at its facility in Greer, South Carolina as part of its ongoing efforts to streamline operations and improve efficiency. This was neither material to the Company’s overall financial position nor performance. No impairment losses were recorded, as the plant's assets were either fully depreciated prior to closure or transferred to other operating locations. The closure is not expected to have a significant impact on the Company's future operations, and the restructuring activities associated with this closure are substantially complete.

Loss Per Share

Basic and diluted net loss per share for the three months ended March 31, 2026 and 2025 was calculated as follows:

	Three Months Ended March 31,
(In thousands, except share and per share amounts)	2026		2025
Numerator:
Net Loss	$	(1,605)	$	(1,515)
Net Loss Attributable to Common Stockholders	$	(1,605)	$	(1,515)
Denominator:
Weighted Average Number of Shares of Common Stock Outstanding - Basic and Diluted	39,418,302		34,107,640
Net Loss per Share Attributable to Common Stockholders - Basic and Diluted	$	(0.04)	$	(0.04)

Basic income (loss) per share (“EPS”) is computed by dividing net loss attributable to common stockholders by the weighted average number of shares of common stock outstanding during the period, excluding the effects of any potentially dilutive securities. Diluted EPS gives effect to the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock, using the more dilutive of the two- class method and the if-

converted method in the period of earnings. The two-class method is an earnings allocation method that determines income (loss) per share (when there are earnings) for common stock and participating securities. The if-converted method assumes all convertible securities are converted into common stock. Diluted EPS excludes all dilutive potential shares of common stock if their effect is anti-dilutive.

The Company’s potentially dilutive securities include stock options, restricted stock awards and units, convertible preferred stock and warrants. The following table includes the potential shares of common stock that were excluded from the computation of diluted EPS attributable to common stockholders for the periods indicated because including them would have had an anti-dilutive effect:

	Three Months Ended March 31,
	2026	2025
Warrants to Purchase Common Stock	3,984,484	3,984,484
Options to Purchase Common Stock	3,200,049	1,884,476
Convertible Preferred Stock	1,405,001	1,391,045
Unvested Restricted Stock Units	1,073,330	383,326
Unvested Restricted Stock Units - Market Condition	717,000	—
Unvested Restricted Stock Awards	—	891
Total	10,379,864	7,644,222

Adoption of Recent Accounting Pronouncements and New Accounting Pronouncements

The Company continually assesses new accounting pronouncements to determine their applicability. When it is determined a new accounting pronouncement affects the Company’s financial reporting, the Company undertakes a review to determine the consequences of the change to its consolidated financial statements and assures there are sufficient controls in place to ascertain the Company’s consolidated financial statements properly reflect the change.

Recently Adopted Accounting Pronouncements

In July 2025, the Financial Accounting Standards Board ("FASB") issued the Accounting Standards Update ("ASU") 2025-05, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses for Accounts Receivable and Contract Assets, which simplifies the estimation of credit losses on current accounts receivable and contract assets by allowing the election of a practical expedient to assume that the current conditions as of the consolidated balance sheet date will remain unchanged for the remaining life of the asset when developing a reasonable and supportable forecast as part of estimating expected credit losses on these assets. The Company adopted this ASU on January 1, 2026, and the adoption did not have a material impact on the Company’s consolidated financial statements or footnote disclosures.

New Accounting Pronouncements

In November 2024, the FASB issued ASU 2024-03, Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses, which is intended to provide more detailed information about specified categories of expenses (purchases of inventory, employee compensation, depreciation and amortization) included in certain expense captions presented on the consolidated statement of operations. This new standard is effective for fiscal years beginning after December 15, 2026, and interim periods within fiscal years beginning after December 15, 2027. Early adoption is permitted. The amendments may be applied either (1) prospectively to financial statements issued for periods after the effective date of this ASU or (2) retrospectively to all prior periods presented in the consolidated financial statements. The Company is currently assessing the impact this ASU will have on the consolidated financial statements and footnote disclosures.

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Revenue Recognition

3 Months Ended

Mar. 31, 2026

Revenue from Contract with Customer [Abstract]

Revenue Recognition

Revenue Recognition

The Company recognizes revenue under Accounting Standards Codification ("ASC") 606, Revenue from Contracts with Customers, issued by the FASB. The core principle of the revenue standard is that a company should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. The following five steps are applied to achieve that core principle:

•Step 1: Identify the contract with the customer

•Step 2: Identify the performance obligations in the contract

•Step 3: Determine the transaction price

•Step 4: Allocate the transaction price to the performance obligations in the contract

•Step 5: Recognize revenue when the company satisfies a performance obligation

Taxes assessed by a governmental authority that are both imposed on and concurrent with a specific revenue-producing transaction, that are collected by Rockwell from a customer, are excluded from revenue.

Certain distributors deduct distribution service fees from amounts due to the Company. These fees, along with chargebacks arising from contracted pricing arrangements with certain end customers, are recorded as reductions of revenue. Chargebacks represent the difference between the distributor’s acquisition cost and the lower contracted price offered to the end customer, and are estimated and recorded as a reduction of revenue at the time of the initial sale to the distributor. Chargeback estimates represent variable consideration and are determined based on contractual pricing arrangements, historical chargeback activity and expected sales to eligible end customers.

Shipping and handling costs associated with outbound freight related to contracts with customers are accounted for as a fulfillment cost and are included in cost of sales when control of the goods transfers to the customer.

Nature of goods and services

Rockwell operates in one market segment, the hemodialysis market, which involves the manufacture, sale and distribution of hemodialysis products to hemodialysis clinics, including pharmaceutical, dialysis concentrates, dialysis kits and other ancillary products used in the dialysis process.

Rockwell's customer mix is diverse, with most customer sales concentrations under 10%. For the three months ended March 31, 2026, revenues from sales to two customers, Fresenius Medical Care North America ("Fresenius") and Nipro Medical Corporation, a subsidiary of Nipro Corporation Japan ("Nipro") were approximately 11% and 10% of total revenues for the period, respectively. For the three months ended March 31, 2025, revenues from sales to two customers, DaVita, Inc. ("DaVita") and Fresenius were approximately 27% and 10% of total revenues for the period, respectively. At March 31, 2026, Fresenius and Nipro each represented 17% of the total net consolidated accounts receivable balance. At December 31, 2025, DaVita represented 14% of the total net consolidated accounts receivable balance. See below for additional information regarding the Company's contract with DaVita.

Product Sales

The Company accounts for individual products and services separately if they are distinct (i.e., if a product or service is separately identifiable from other items and if a customer can benefit from it on its own or with other resources that are readily available to the customer). The consideration, including any discounts, is allocated between separate products and services based on their stand-alone selling prices. The stand-alone selling prices are determined based on the cost plus margin approach.

Drug and dialysis concentrate products are sold directly to dialysis clinics and to wholesale distributors in both domestic and international markets. Distribution and license agreements for which upfront fees are received are evaluated upon execution or modification of the agreement to determine if the agreement creates a separate performance obligation from the underlying product sales. For all existing distribution and license agreements, the distribution and license agreement is not a distinct performance obligation from the product sales. In instances where regulatory approval of the product has not been established and the Company does not have sufficient experience with the foreign regulatory body to conclude that regulatory approval is probable, the revenue for the performance obligation is recognized over the term of the license agreement (over time recognition). Conversely, when regulatory approval already exists or is probable, revenue is recognized at the point in time that control of the product transfers to the customer.

For the majority of the Company's international customers, the Company recognizes revenue when the customer takes control at the shipping point, which is generally the Company's plant or warehouse. For other customers, the Company recognizes revenue based on when the customer takes control of the product upon delivery. The amount of revenue recognized is based on the purchase order less returns and adjusted for any rebates, discounts, chargebacks or other amounts paid to customers

estimated at the time of sale. Customers typically pay for the product based on customary business practices with payment terms averaging 30 days, while a small subset of customers have payment terms averaging 60 days.

Deferred License Revenue

The Company received upfront fees under three distribution and license agreements, which were recognized as revenue over the estimated term of the applicable distribution and license agreement as regulatory approval was not received and the Company did not have sufficient experience in China, India, South Korea and Turkey to determine that regulatory approval was probable as of the execution of the agreement. During the three months ended March 31, 2025, all remaining deferred revenue relating to the distribution and license agreements was recognized, resulting in $0.3 million of revenue recorded. All license agreements have been terminated.

Product Purchase Agreement

On September 18, 2023, Rockwell and its long-time customer, DaVita, a provider of kidney care, entered into an Amended and Restated Products Purchase Agreement (the "Amended Agreement"), which amends and restates the Product Purchase Agreement, dated July 1, 2019, as amended, under which the Company supplies DaVita with certain dialysis concentrates. Under the Amended Agreement, the Company and DaVita agreed to an increase in product pricing, effective September 1, 2023. The term of the Amended Agreement was scheduled to expire on December 31, 2024. Prior to the expiration, the Company received written notice from DaVita, notifying the Company that DaVita intended to extend the term of the Amended Agreement through December 31, 2025 (the "Extension Term"). However, DaVita subsequently indicated that it will completely transition to another supplier, subject to further discussion between Rockwell and DaVita. DaVita agreed to non-refundable payments to ensure supply continuity during the transition period for products purchased, including quarterly, non-refundable payments totaling $2.0 million during the year ended December 31, 2025, of which $0.9 million was recorded as revenue during the three months ended March 31, 2025. On December 23, 2025, DaVita and the Company extended the term of the Amended Agreement through December 31, 2026 (as amended, the " Second Extension Term") with an increase in product pricing during the Second Extension Term.

Disaggregation of revenue

Revenue is disaggregated by primary geographical market, major product line, and timing of revenue recognition.

In thousands	Three Months Ended March 31, 2026
Products By Geographic Area	Total		U.S.		Rest of World
Concentrate Product Sales - Point-in-Time	$	17,336	$	14,563	$	2,773
Net Revenue	$	17,336	$	14,563	$	2,773

In thousands	Three Months Ended March 31, 2025
Products By Geographic Area	Total		U.S.		Rest of World
License Fee – Over Time	$	325	$	—	$	325
Concentrate Product Sales - Point-in-Time	18,589		16,436		2,153
Net Revenue	$	18,914	$	16,436	$	2,478

Contract balances

The following table provides information about receivables, contract assets, and contract liabilities from contracts with customers.

In thousands	March 31, 2026		December 31, 2025		January 1, 2025
Accounts Receivable, net	$	8,825	$	8,143	$	8,291
Contract Liabilities, which are included in Deferred License Revenue	$	—	$	—	$	475

There were no other material contract assets recorded on the condensed consolidated balance sheets as of March 31, 2026 and December 31, 2025. The Company does not generally accept returns of its concentrate products and no material

provision for returns of concentrates products was established as of March 31, 2026 or December 31, 2025. As of March 31, 2026 and December 31, 2025, the Company recorded an accrual for chargebacks and distribution fees of $0.7 million and $1.0 million, respectively, which are presented as an offset to accounts receivable in the accompanying condensed consolidated balance sheets.

Transaction price allocated to remaining performance obligations

Revenue expected to be recognized in any future year related to remaining performance obligations, excluding revenue pertaining to contracts that have an original expected duration of one year or less, contracts where revenue is recognized as invoiced and contracts with variable consideration related to undelivered performance obligations, was nil as of March 31, 2026. The Company applies the practical expedient in ASC 606, paragraph 606-10-50-14 and does not disclose information about remaining performance obligations that have original expected durations of one year or less.

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Intangible Assets and Deferred Consideration

3 Months Ended

Mar. 31, 2026

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets and Deferred Consideration

Intangible Assets and Deferred Consideration

Intangible Assets

Our customer relationship intangible asset relates to customer relationships acquired in connection with an acquisition (the "Evoqua Asset Acquisition") executed on July 10, 2023 with Evoqua Water Technologies LLC ("Evoqua").

The details of our intangible assets subject to amortization are set forth below (in thousands):

	March 31, 2026
	Useful Life	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Customer Relationships	20 years	$	11,035	$	(1,517)	$	9,518

	December 31, 2025
	Useful Life	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Customer Relationships	20 years	$	11,035	$	(1,379)	$	9,656

During each of the three months ended March 31, 2026 and 2025, the Company recorded amortization of its customer relationship intangible asset of $0.1 million.

Estimated future amortization expense on the Company's customer relationships intangible asset as of March 31, 2026 is as follows (table in thousands):

Year ending December 31:
2026 (Remainder of Year)	$	414
2027	552
2028	552
2029	552
2030	552
Thereafter	6,896
Total	$	9,518

Deferred Consideration

A portion of the purchase price of the Evoqua Asset Acquisition was deferred on the acquisition date and is reflected in Deferred Consideration - Current on the condensed consolidated balance sheet, with payment terms extending through April 2026. The Company made payments of $0.5 million and $0.4 million during the three months ended March 31, 2026 and 2025, respectively.

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Investments - Available-for-Sale

3 Months Ended

Mar. 31, 2026

Investments, Debt and Equity Securities [Abstract]

Investments - Available-for-Sale

Investments - Available-for-Sale

Investments available-for-sale consisted of the following as of March 31, 2026 and December 31, 2025 (table in thousands):

	March 31, 2026
	Amortized Cost		Unrealized Gain		Unrealized Loss		Accrued Interest		Fair Value
Available-for-Sale Securities
Debt Securities	$	14,142	$	139	$	—	$	—	$	14,281

	December 31, 2025
	Amortized Cost		Unrealized Gain		Unrealized Loss		Accrued Interest		Fair Value
Available-for-Sale Securities
Debt Securities	$	14,149	$	137	$	—	$	—	$	14,286

The fair value of investments available-for-sale are determined using quoted market prices from daily exchange-traded markets based on the closing price as of the balance sheet date and are classified as a Level 1 measurement under ASC 820, Fair Value Measurements.

During both of the three months ended March 31, 2026 and 2025, the Company sold investments outstanding for a gain of $0.1 million, which is included in realized gain on available-for-sale investments on the condensed consolidated statements of operations.

As of March 31, 2026, the Company's remaining available-for-sale securities are U.S. Department of the Treasury bonds and are all due within one year.

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Segment Reporting

3 Months Ended

Mar. 31, 2026

Segment Reporting [Abstract]

Segment Reporting

Segment Reporting

Operating segments are defined as components of an entity about which discrete financial information is evaluated regularly by the Company's Chief Operating Decision Maker ("CODM") in deciding how to allocate resources and assess performance. Rockwell operates in one market segment, the hemodialysis market, which involves the manufacture, sale and distribution of hemodialysis products to hemodialysis clinics, including pharmaceutical, dialysis concentrates, dialysis kits and other ancillary products used in the dialysis process. Accordingly, the Company has one reportable segment. The Company has a single management team that reports to its Chief Executive Officer, the Company's CODM, who comprehensively manages the entire Company. The accounting policies of the segment are the same as those described in the summary of significant accounting policies.

The CODM assesses performance for the segment and decides how to allocate resources based on net loss that also is reported on the statements of operations and comprehensive loss as net loss. The CODM uses net loss to monitor budget and forecast versus actual results in assessing segment performance, as well as cash forecast models, in order to evaluate operating results and performance in deciding how to allocate resources. The measure of segment assets is reported on the condensed consolidated balance sheets as total assets.

The Company’s significant segment expenses for its one segment for the three months ended March 31, 2026 and 2025 consisted of the following (table in thousands):

	Three Months Ended March 31,
	2026		2025
Net Sales	$	17,336	$	18,914
Cost of Sales	14,439		15,872
Gross Profit	2,897		3,042
Employee Compensation	2,735		2,678
Administrative Costs	1,642		1,724
Operating Loss	(1,480)		(1,360)
Other Income (Expense):
Realized Gain on Available-for-Sale Investments	120		56
Interest Expense	(282)		(277)
Interest Income	37		66
Total Other Expense, net	(125)		(155)
Net Loss	$	(1,605)	$	(1,515)

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Inventory

3 Months Ended

Mar. 31, 2026

Inventory Disclosure [Abstract]

Inventory

Inventory

Components of inventory, net of reserves, as of March 31, 2026 and December 31, 2025 were as follows (table in thousands):

	March 31, 2026		December 31, 2025
Inventory - Current Portion
Raw Materials	$	1,599	$	1,848
Work in Process	241		199
Finished Goods	1,215		1,377
Total Inventory	$	3,055	$	3,424

As of March 31, 2026 and December 31, 2025, Rockwell had total current concentrate inventory aggregating $3.1 million and $3.4 million, respectively, against which Rockwell had reserved $25,000 at each period end.

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Property and Equipment

3 Months Ended

Mar. 31, 2026

Property, Plant and Equipment [Abstract]

Property and Equipment

Property and Equipment

As of March 31, 2026 and December 31, 2025, the Company’s property and equipment consisted of the following (table in thousands):

	March 31, 2026		December 31, 2025
Machinery and Equipment	$	10,273	$	11,340
Information Technology & Office Equipment	1,686		1,717
Leasehold Improvements	1,378		1,567
Laboratory Equipment	725		726
Total Property and Equipment	14,062		15,350
Accumulated Depreciation and Amortization	(9,734)		(10,721)
Property and Equipment, net	$	4,328	$	4,629

During the three months ended March 31, 2026, the Company disposed of certain property and equipment, resulting in the derecognition of $1.7 million of gross assets and $1.4 million of accumulated depreciation, proceeds of $0.2 million from asset sales, and a net loss on disposal of $0.2 million. Depreciation and amortization expense for each of the three months ended March 31, 2026 and 2025 was $0.4 million.

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Accrued Liabilities

3 Months Ended

Mar. 31, 2026

Payables and Accruals [Abstract]

Accrued Liabilities

Accrued Liabilities

Accrued liabilities as of March 31, 2026 and December 31, 2025 consisted of the following (table in thousands):

	March 31, 2026		December 31, 2025
Accrued Compensation and Benefits	$	1,344	$	2,558
Accrued Unvouchered Receipts	880		814
Accrued Workers Compensation	79		84
Other Accrued Liabilities	857		881
Total Accrued Liabilities	$	3,160	$	4,337

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Stockholders’ Equity

3 Months Ended

Mar. 31, 2026

Equity [Abstract]

Stockholders' Equity

Stockholders’ Equity

Preferred Stock

On April 6, 2022, the Company and DaVita entered into the Securities Purchase Agreement (the "SPA"), which provided for the issuance by the Company of up to $15 million of preferred stock to DaVita, which was issued to DaVita during 2022 as Series X Preferred Stock and, by virtue, made DaVita a related party.

The Series X Preferred Stock was issued for a price of $1,000 per share (the "Face Amount"), subject to accretion at a rate of 1% per annum, compounded annually. If the Company’s common stock trades above $22.00 for a period of 30 calendar days, the accretion will thereafter cease. As of March 31, 2026, a total of $0.5 million of the Series X Preferred Stock had been accreted.

The Series X Convertible Preferred Stock is convertible to common stock at a rate equal to the Face Amount, divided by a conversion price of $11.00 per share (subject to adjustment for future stock splits, reverse stock splits and similar recapitalization events). As a result, each share of Series X Preferred Stock will initially convert into approximately 91 shares of common stock. DaVita’s right to convert to common stock is subject to a beneficial ownership limitation, which is initially set at 9.9% of the outstanding common stock, which limitation may be reset (not to exceed 19.9%) at DaVita’s option and upon providing prior written notice to the Company. In addition, any debt financing is limited by the terms of our SPA with DaVita. Specifically, until DaVita holds less than 50% of its original investment in the Company's Series X Convertible Preferred Stock, the Company may only incur additional debt in the form of a purchase money loan, a working capital line of up to $5 million or to refinance existing debt, unless DaVita consents.

Additionally, the Series X Preferred Stock has a deemed liquidation event and redemption clause which could be triggered if the sale of all or substantially all of the Company's assets relating to the Company's dialysis concentrates business line. Since the Series X Preferred Stock may be redeemed if certain assets are sold at the option of the holder, but is not mandatorily redeemable as the sale of the assets that would allow for redemption is within the control of the Company, the preferred stock has been classified as permanent equity and initially recognized at fair value of $15 million (the proceeds on the date of issuance) less issuance costs of $0.1 million, resulting in an initial value of $14.9 million. The Company will assess at each reporting period whether conditions have changed to now meet the mandatory redemption definition which could trigger liability classification.

As of each of March 31, 2026 and December 31, 2025, there were 2,000,000 shares of preferred stock, $0.0001 par value per share, authorized and 15,000 shares of preferred stock issued and outstanding.

Common Stock

As of March 31, 2026 and 2025, the Company reserved for issuance the following shares of common stock related to the potential exercise of employee stock options, unvested restricted stock, convertible preferred stock, and warrants (collectively, "common stock equivalents"):

	As of March 31,
Common Stock and Common Stock Equivalents:	2026	2025
Common Stock	39,470,299	34,257,903
Options to Purchase Common Stock	3,200,049	1,884,476
Unvested Restricted Stock Awards	—	891
Unvested Restricted Stock Units	1,073,330	383,326
Convertible Preferred Stock	1,405,001	1,391,045
Unvested Restricted Stock Units - Market Condition	717,000	—
Warrants to Purchase Common Stock	3,984,484	3,984,484
Total	49,850,163	41,902,125

Controlled Equity Offering

On April 8, 2022, the Company entered into a Sales Agreement (the "Sales Agreement") with Cantor Fitzgerald & Co. (the "Agent"), pursuant to which the Company may offer and sell from time to time shares of Company’s common stock through the Agent pursuant to the Company’s shelf registration statement on Form S-3 (No. 333-259923) filed with the SEC on September 30, 2021 (the “Prior Registration Statement”).

This Prior Registration Statement expired on October 8, 2024 and, upon the effectiveness of the new registration statement on October 21, 2024, was deemed terminated. On November 13, 2024, in connection with the new registration statement, the Company filed a prospectus supplement covering the offer and sale of an aggregate offering price of up to $25.0 million of shares of the Company's common stock through the Agent under the Sales Agreement (as amended, the "ATM facility"). The offering and sale of such shares has been registered under the Securities Act of 1933, as amended.

During the three months ended March 31, 2026, no shares were sold pursuant to the Sales Agreement. Approximately $13.1 million remains available for sale under the ATM facility.

Warrant Issuance

In connection with the execution of the Third Amendment, as defined and described in Note 15, on January 2, 2024, the Company issued to Innovatus a warrant to purchase 191,096 shares of the Company’s common stock with an exercise price of $1.83 per share. The warrant may be exercised on a cashless basis, and is immediately exercisable through January 2, 2029. The number of shares of common stock for which the warrant is exercisable and the exercise price are subject to certain proportional adjustments as set forth in the Third Amendment. The warrant is equity-classified with a fair value of approximately $0.2 million at issuance, which was treated as a debt issuance cost and will be amortized through interest expense over the remaining contractual term of the Term Loans, as defined and described in Note 15.

On July 10, 2023, the Company entered into a letter agreement (the “Letter Agreement”) with Armistice Capital Master Fund Ltd. (“Armistice”), in which Armistice would receive a “reload” warrant (the “Reload Warrant”) to purchase 3,750,000 shares of Common Stock with an exercise price of $5.13 per share, the closing price as reported by the Nasdaq Capital Market on July 7, 2023. The Reload Warrant may be exercised at all times prior to the 54 months anniversary of its issuance date. The Reload Warrant provides that a holder (together with its affiliates) may not exercise any portion of the Reload Warrant to the extent that the holder would own more than 9.99% of the Company’s outstanding Common Stock immediately after exercise, as such percentage ownership is determined in accordance with the terms of such warrant.

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Stock-based Compensation

3 Months Ended

Mar. 31, 2026

Share-Based Payment Arrangement [Abstract]

Stock-based Compensation

Stock-Based Compensation

The Company recognized total stock-based compensation expense during the three months ended March 31, 2026 and 2025 as follows (table in thousands):

	Three Months Ended March 31,
	2026		2025
Service-based Awards:
Restricted Stock Units	$	193	$	294
Stock Option Awards	286		151
Total	$	479	$	445

Performance-based Restricted Stock Awards

A summary of the Company’s performance-based restricted stock awards during the three months ended March 31, 2026 is as follows:

Performance-based Restricted Stock Awards	Number of Shares	Weighted Average Grant-Date Fair Value
Unvested at January 1, 2026	891	$	62.70
Forfeited	(891)	$	62.70
Unvested at March 31, 2026	—	$	—

Performance-based restricted stock awards are measured based on their fair value on the date of grant and amortized over the vesting period of 20 months. As of March 31, 2026, there is no unrecognized stock-based compensation expense related to performance-based restricted stock awards.

Restricted Stock Units - Market Condition

In May 2025, the Company granted 717,000 restricted stock units with a market condition ("RSU-MC") under its Amended and Restated 2018 Long Term Incentive Plan with a grant date fair value of $0.6 million. The RSU-MCs are subject to both service and market based vesting conditions.

The RSU-MCs will vest, subject to the recipient's continued employment through the vesting date, if the average closing price of the Company's common stock equals or exceeds $2.14 per share for any consecutive 60-day trading period occurring prior to the third anniversary of the grant date. Except in the event of a change in control or termination due to death or disability, no portion of the award will vest before the first anniversary of the grant date. The RSU-MCs qualify as equity instruments and are accounted for under ASC 718, Compensation, Stock Compensation.

The unrecognized stock-based compensation expense recorded in connection with the RSU-MCs was $0.4 million at March 31, 2026, which is expected to be recognized over the next 2.14 years.

Service-based Restricted Stock Units

There were no service-based restricted stock units granted during the three months ended March 31, 2026 or 2025.

A summary of the Company’s service-based restricted stock units during the three months ended March 31, 2026 is as follows:

Service-based Restricted Stock Units	Number of Shares	Weighted Average Grant-Date Fair Value
Unvested at January 1, 2026	1,156,660	$	1.11
Vested	(83,330)	1.39
Unvested at March 31, 2026	1,073,330	$	1.09

The fair value of service-based restricted stock units is measured on the date of grant and amortized over the vesting period. The vesting periods range from one to three years. As of March 31, 2026, the unrecognized stock-based compensation expense was $0.5 million, which is expected to be recognized over the next 1.02 years.

Service-based Stock Option Awards

There were no service-based stock option awards granted during the three months ended March 31, 2026 or 2025.

A summary of the Company’s service-based stock option activity for the three months ended March 31, 2026 is as follows:

Service-based Stock Option Awards	Shares Underlying Options	Weighted Average Exercise Price		Weighted Average Remaining Contractual Term	Aggregate Intrinsic Value (in thousands)
Outstanding at January 1, 2026	3,276,564	$	2.64
Forfeited	(43,832)	1.19
Expired	(32,683)	10.32
Outstanding at March 31, 2026	3,200,049	$	2.56	7.83	$	3
Exercisable at March 31, 2026	1,182,664	$	4.77	6.44	$	—

The aggregate intrinsic value is calculated as the difference between the closing price of the Company's common stock at the date indicated and the exercise price of the stock options that had strike prices below the closing price.

As of March 31, 2026, total stock-based compensation expense related to unvested options not yet recognized totaled approximately $0.7 million, which is expected to be recognized over the next 2.06 years.

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Commitments and Contingencies

3 Months Ended

Mar. 31, 2026

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies

From time to time, the Company has been or may become a party to various disputes, legal actions, proceedings and investigations involving claims incidental to the conduct of its business, including actions by customers, employees, government entities and third parties. Due to the contract-intensive nature of the Company's business, the Company has been or may in the future become involved in disputes or legal actions with its contract counterparties, which could have a negative impact on the Company's business, results of operations or financial condition.

Product License Agreements

The Company is a party to a Licensing Agreement between the Company and Charak, LLC ("Charak") dated January 7, 2002 (the "2002 Agreement") that grants the Company exclusive worldwide rights to certain patents and information related to its Triferic product. On October 7, 2018, the Company entered into a Master Services and IP Agreement (the “Charak MSA”) with Charak and Dr. Ajay Gupta, a former Officer of the Company. Pursuant to the Charak MSA, the parties entered into three additional agreements related to the license of certain soluble ferric pyrophosphate (“SFP”) intellectual property owned by Charak. These agreements granted the Company an exclusive, worldwide, non-transferable license to SFP for the purpose of commercializing (i) SFP for the treatment of patients with renal failure, (ii) certain intravenous-delivered products incorporating SFP for the treatment of iron disorders, and (iii) certain TPN products incorporating SFP. The potential milestone payments are not considered probable, and no milestone payments have been accrued as of March 31, 2026 and December 31, 2025.

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Leases

3 Months Ended

Mar. 31, 2026

Leases [Abstract]

Leases

Leases

Rockwell leases its production facilities and administrative offices as well as certain equipment used in its operations including leases on transportation equipment used in the delivery of its products. The lease terms range from monthly to six years. Rockwell occupies a 51,000 square foot facility and a 17,500 square foot facility in Wixom, Michigan under a lease expiring in August 2027. Rockwell also occupies a 51,000 square foot facility in Grapevine, Texas. The lease, which previously expired in December 2025, was extended in January 2026 for a 62-month term through February 2031, resulting in the recognition of a right-of-use asset and corresponding lease liability of approximately $2.5 million. Additionally, Rockwell occupies a lease for a 16,800 square foot storage facility in Allentown, Pennsylvania, that expires in April 2030.

The following summarizes quantitative information about the Company’s operating and finance leases (table in thousands):

	Three Months Ended March 31,
	2026		2025
Operating Leases
Operating Lease Cost	$	523	$	426
Variable Lease Cost	70		128
Operating Lease Expense	593		554
Finance Leases
Amortization of Right-of-Use Assets	102		139
Interest on Lease Obligations	12		23
Finance Lease Expense	114		162
Short-term Lease Rent Expense	5		5
Total Lease Expense	$	712	$	721
Other Information
Operating Cash Flows from Operating Leases	$	419	$	433
Operating Cash Flows from Finance Leases	$	12	$	23
Financing Cash Flows from Finance Leases	$	115	$	146

	March 31,
	2026		2025
Weighted-average Remaining Lease Term – Operating Leases	3.8		2.2
Weighted-average Remaining Lease Term – Finance Leases	1.4		2.2
Weighted-average Discount Rate – Operating Leases	9.8	%	6.2	%
Weighted-average Discount Rate – Finance Leases	6.8	%	6.4	%

Future minimum rental payments under operating and finance lease agreements are as follows (table in thousands):

	Operating		Finance
Year ending December 31, 2026 (Remaining)	$	1,398	$	378
Year ending December 31, 2027	1,533		311
Year ending December 31, 2028	973		—
Year ending December 31, 2029	953		—
Year ending December 31, 2030	794		—
Remaining future payments	117		—
Total	5,768		689
Less Present Value Discount	(1,016)		(31)
Operating and Finance Lease Liabilities	$	4,752	$	658

Leases

Leases

Rockwell leases its production facilities and administrative offices as well as certain equipment used in its operations including leases on transportation equipment used in the delivery of its products. The lease terms range from monthly to six years. Rockwell occupies a 51,000 square foot facility and a 17,500 square foot facility in Wixom, Michigan under a lease expiring in August 2027. Rockwell also occupies a 51,000 square foot facility in Grapevine, Texas. The lease, which previously expired in December 2025, was extended in January 2026 for a 62-month term through February 2031, resulting in the recognition of a right-of-use asset and corresponding lease liability of approximately $2.5 million. Additionally, Rockwell occupies a lease for a 16,800 square foot storage facility in Allentown, Pennsylvania, that expires in April 2030.

The following summarizes quantitative information about the Company’s operating and finance leases (table in thousands):

	Three Months Ended March 31,
	2026		2025
Operating Leases
Operating Lease Cost	$	523	$	426
Variable Lease Cost	70		128
Operating Lease Expense	593		554
Finance Leases
Amortization of Right-of-Use Assets	102		139
Interest on Lease Obligations	12		23
Finance Lease Expense	114		162
Short-term Lease Rent Expense	5		5
Total Lease Expense	$	712	$	721
Other Information
Operating Cash Flows from Operating Leases	$	419	$	433
Operating Cash Flows from Finance Leases	$	12	$	23
Financing Cash Flows from Finance Leases	$	115	$	146

	March 31,
	2026		2025
Weighted-average Remaining Lease Term – Operating Leases	3.8		2.2
Weighted-average Remaining Lease Term – Finance Leases	1.4		2.2
Weighted-average Discount Rate – Operating Leases	9.8	%	6.2	%
Weighted-average Discount Rate – Finance Leases	6.8	%	6.4	%

Future minimum rental payments under operating and finance lease agreements are as follows (table in thousands):

	Operating		Finance
Year ending December 31, 2026 (Remaining)	$	1,398	$	378
Year ending December 31, 2027	1,533		311
Year ending December 31, 2028	973		—
Year ending December 31, 2029	953		—
Year ending December 31, 2030	794		—
Remaining future payments	117		—
Total	5,768		689
Less Present Value Discount	(1,016)		(31)
Operating and Finance Lease Liabilities	$	4,752	$	658

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Loan and Security Agreement

3 Months Ended

Mar. 31, 2026

Debt Disclosure [Abstract]

Loan and Security Agreement

Loan and Security Agreement

On March 16, 2020, the Company and Rockwell Transportation, Inc., as Borrowers, entered into a Loan and Security Agreement (the "Loan Agreement") with Innovatus, as collateral agent and the lenders party thereto, pursuant to which Innovatus, as a lender, agreed to make certain term loans to the Company. In connection with each funding of the Term Loans, the Company issued to Innovatus a warrant (each a “Warrant”, and together the “Warrants”) to purchase a number of shares of the Company’s common stock equal to 3.5% of the principal amount of the relevant Term Loans funded divided by the exercise price. In connection with the first tranche of the Term Loans, the Company issued a Warrant to Innovatus, exercisable for an aggregate of 43,388 shares of the Company’s common stock at an exercise price of $18.15 per share. The Warrant may be exercised on a cashless basis and is immediately exercisable through the seventh anniversary of the applicable funding date. The number of shares of common stock for which the Warrant is exercisable and the associated exercise price are subject to certain proportional adjustments as set forth in such Warrant. The Company evaluated the warrant under ASC 470, Debt, and recognized an additional debt discount of approximately $0.5 million based on the relative fair value of the base instruments and warrants. The Company calculated the fair value of the Warrant using the Black-Scholes model.

On January 2, 2024, the Company entered into the Third Amendment to and Restatement of the Loan and Security Agreement (the "Third Amendment") with Innovatus, dated January 1, 2024 (the "Effective Date"). The Third Amendment provides for the continuation of term loans initially borrowed under the Loan Agreement amounting to $8.0 million as of January 1, 2024. The Company will make interest-only payments on the Term Loans for 36 months as certain conditions in the Third Amendment were met. The Company will make equal monthly payments of principal, together with applicable interest, in arrears, starting February 1, 2027. The Term Loans will mature on January 1, 2029. Effective on January 1, 2024, the Term Loans bear interest equal to the sum of (i) the greater of (a) Prime Rate (as defined in the Third Amendment) and (b) 7.50% plus (ii) 3.50%. At the Company's option, 2.00% of the interest due on any applicable interest payment date during the interest-only period may be paid in-kind by adding such amount to the then outstanding principal balance of the Term Loans. The Company also owes an additional fee equal to 4.375% of the funded amount of the Term Loans, or $1.0 million (such additional fee, the "Final Fee") at maturity. The Company is accreting up to this Final Fee premium with a charge against interest expense on the accompanying condensed consolidated statements of operations. The Term Loans may be voluntarily prepaid in full (but not partially) at any time, upon at least seven business days’ prior notice. In connection with any voluntary prepayment or satisfaction of the Term Loans prior to the maturity date (including any acceleration), the Company will pay all accrued and unpaid interest and all other amounts due in connection with the Term Loans, together with (x) a prepayment fee (the “Prepayment Fee”) equal to: (i) 1.0% of the principal amount of the Term Loans prepaid if the payment is made after January 1, 2026 but on or before January 1, 2027; or (ii) 0% of the principal amount of the Term Loans prepaid if the payment is made after January 1, 2027 through maturity, and (y) the Final Fee. The Term Loans will be mandatorily prepaid upon a change in control of the Company, or upon any early termination/acceleration of the Term Loans. In the event of a mandatory prepayment of the Term Loans, the Company shall be required to pay the Prepayment Fee (if applicable), as well as the Final Fee. The Third Amendment was treated as a modification for accounting purposes.

The Third Amendment contains various financial covenants and customary representations and warranties and affirmative and negative covenants, subject to exceptions as described in the Third Amendment. The Company's ability to comply with the covenants under the Third Amendment may be adversely affected by events beyond its control. If the Company is unable to comply with the covenants under the Third Amendment, it would pursue all available cure options in order to regain compliance. However, the Company may not be able to mutually agree with Innovatus on appropriate remedies to cure a future breach of a covenant, which could give rise to an event of default. As of March 31, 2026, the Company was in compliance with all covenants under the Third Amendment.

In connection with the execution of the Third Amendment, on January 2, 2024, the Company issued a warrant to purchase shares of the Company’s common stock. The warrant is equity-classified with a fair value of $0.2 million at issuance, which was treated as a debt issuance cost and is being amortized through interest expense over the remaining contractual term of the Term Loans. For additional information, see Note 11.

The effective interest rate used to amortize the debt issuance cost relating to these warrants is 11.0% as of March 31, 2026. As of March 31, 2026, the outstanding balance of the Term Loans was $8.9 million, net of aggregate unamortized issuance costs, discounts and premiums of $1.3 million. For both of the three months ended March 31, 2026 and 2025, interest expense, including paid-in-kind interest, amounted to $0.3 million.

The Loan Agreement is secured by all assets of the Company and Rockwell Transportation, Inc. and contains customary representations and warranties and covenants, subject to customary carve outs, and initially included financial covenants related to liquidity and sales of Triferic.

The following table reflects the schedule of principal payments on the Term Loans as of March 31, 2026 (table in thousands):

Year	Principal Payments
2026 (Remaining)	$	—
2027	3,871
2028	4,223
2029 (Inclusive of Final Fee)	1,336
Total Debt Maturities	9,430
Unamortized Issuance Costs and Discount	(516)
Total Debt Maturities, net of Unamortized Issuance Costs and Discount	8,914
Less: Current Portion of Term Loans	(707)
Term Loans, net	$	8,207

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Insurance Financing Note Payable

3 Months Ended

Mar. 31, 2026

Debt Disclosure [Abstract]

Insurance Financing Note Payable

Insurance Financing Note Payable

On June 3, 2025, the Company entered into a short-term note payable with a principal amount of $0.7 million, bearing interest at a rate of 7.14% per annum to finance various insurance policies, which required an upfront payment of $0.2 million. Principal and interest payments related to this note began on July 3, 2025 and are being paid in 10 equal monthly payments of $0.1 million, with the final payment due on April 3, 2026. As of March 31, 2026, the Company's insurance financing note payable balance was $0.1 million.

On June 4, 2024, the Company entered into a short-term note payable with a principal amount of $0.7 million, bearing interest at a rate of 7.89% per annum to finance various insurance policies, which required an upfront payment of $0.2 million. Principal and interest payments related to this note began on July 3, 2024 and were paid in 10 equal monthly payments of $0.1 million, with the final payment paid on April 3, 2025.

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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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Basis of Presentation, Summary of Significant Accounting Policies and Recent Accounting Pronouncements (Policies)

3 Months Ended

Mar. 31, 2026

Accounting Policies [Abstract]

Basis of Presentation

The accompanying condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) for interim financial information and pursuant to the instructions to Form 10-Q and Rule 10-01 of Regulation S-X of the U. S. Securities and Exchange Commission (“SEC”) and on the same basis as the Company prepares its annual audited consolidated financial statements.

The condensed consolidated balance sheet at March 31, 2026, and the condensed consolidated statements of operations, comprehensive loss, changes in stockholders' equity, and cash flows for the three months ended March 31, 2026 and 2025 are unaudited, but include all adjustments, consisting of normal recurring adjustments the Company considers necessary for a fair presentation of the financial position, operating results, and cash flows for the periods presented. The results for the three months ended March 31, 2026 are not necessarily indicative of results to be expected for the year ending December 31, 2026 or for any future interim period. The condensed consolidated balance sheet at December 31, 2025 has been derived from audited financial statements; however, it does not include all of the information and notes required by U.S. GAAP for complete financial statements. The accompanying condensed consolidated financial statements should be read in conjunction with the audited financial statements for the year ended December 31, 2025 and notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2025 as filed with the SEC on March 26, 2026. The Company’s consolidated subsidiaries consist of its wholly-owned subsidiaries, Rockwell Transportation, Inc. and Rockwell Medical India Private Limited.

The accompanying condensed consolidated interim financial statements include the accounts of the Company and its subsidiaries. All material intercompany balances and transactions have been eliminated in consolidation.

Use of Estimates

Use of Estimates

The preparation of the condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that may affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Income (Loss) Per Share

Basic income (loss) per share (“EPS”) is computed by dividing net loss attributable to common stockholders by the weighted average number of shares of common stock outstanding during the period, excluding the effects of any potentially dilutive securities. Diluted EPS gives effect to the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock, using the more dilutive of the two- class method and the if-

converted method in the period of earnings. The two-class method is an earnings allocation method that determines income (loss) per share (when there are earnings) for common stock and participating securities. The if-converted method assumes all convertible securities are converted into common stock. Diluted EPS excludes all dilutive potential shares of common stock if their effect is anti-dilutive.

The Company’s potentially dilutive securities include stock options, restricted stock awards and units, convertible preferred stock and warrants.

Adoption of Recent Accounting Pronouncements and New Accounting Pronouncements

Adoption of Recent Accounting Pronouncements and New Accounting Pronouncements

The Company continually assesses new accounting pronouncements to determine their applicability. When it is determined a new accounting pronouncement affects the Company’s financial reporting, the Company undertakes a review to determine the consequences of the change to its consolidated financial statements and assures there are sufficient controls in place to ascertain the Company’s consolidated financial statements properly reflect the change.

Recently Adopted Accounting Pronouncements

In July 2025, the Financial Accounting Standards Board ("FASB") issued the Accounting Standards Update ("ASU") 2025-05, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses for Accounts Receivable and Contract Assets, which simplifies the estimation of credit losses on current accounts receivable and contract assets by allowing the election of a practical expedient to assume that the current conditions as of the consolidated balance sheet date will remain unchanged for the remaining life of the asset when developing a reasonable and supportable forecast as part of estimating expected credit losses on these assets. The Company adopted this ASU on January 1, 2026, and the adoption did not have a material impact on the Company’s consolidated financial statements or footnote disclosures.

New Accounting Pronouncements

In November 2024, the FASB issued ASU 2024-03, Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses, which is intended to provide more detailed information about specified categories of expenses (purchases of inventory, employee compensation, depreciation and amortization) included in certain expense captions presented on the consolidated statement of operations. This new standard is effective for fiscal years beginning after December 15, 2026, and interim periods within fiscal years beginning after December 15, 2027. Early adoption is permitted. The amendments may be applied either (1) prospectively to financial statements issued for periods after the effective date of this ASU or (2) retrospectively to all prior periods presented in the consolidated financial statements. The Company is currently assessing the impact this ASU will have on the consolidated financial statements and footnote disclosures.

Revenue Recognition

The Company recognizes revenue under Accounting Standards Codification ("ASC") 606, Revenue from Contracts with Customers, issued by the FASB. The core principle of the revenue standard is that a company should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. The following five steps are applied to achieve that core principle:

•Step 1: Identify the contract with the customer

•Step 2: Identify the performance obligations in the contract

•Step 3: Determine the transaction price

•Step 4: Allocate the transaction price to the performance obligations in the contract

•Step 5: Recognize revenue when the company satisfies a performance obligation

Taxes assessed by a governmental authority that are both imposed on and concurrent with a specific revenue-producing transaction, that are collected by Rockwell from a customer, are excluded from revenue.

Certain distributors deduct distribution service fees from amounts due to the Company. These fees, along with chargebacks arising from contracted pricing arrangements with certain end customers, are recorded as reductions of revenue. Chargebacks represent the difference between the distributor’s acquisition cost and the lower contracted price offered to the end customer, and are estimated and recorded as a reduction of revenue at the time of the initial sale to the distributor. Chargeback estimates represent variable consideration and are determined based on contractual pricing arrangements, historical chargeback activity and expected sales to eligible end customers.

Shipping and handling costs associated with outbound freight related to contracts with customers are accounted for as a fulfillment cost and are included in cost of sales when control of the goods transfers to the customer.

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Basis of Presentation, Summary of Significant Accounting Policies and Recent Accounting Pronouncements (Tables)

3 Months Ended

Mar. 31, 2026

Accounting Policies [Abstract]

Schedule of Basic and Diluted Net Income (Loss) Per Share

Basic and diluted net loss per share for the three months ended March 31, 2026 and 2025 was calculated as follows:

	Three Months Ended March 31,
(In thousands, except share and per share amounts)	2026		2025
Numerator:
Net Loss	$	(1,605)	$	(1,515)
Net Loss Attributable to Common Stockholders	$	(1,605)	$	(1,515)
Denominator:
Weighted Average Number of Shares of Common Stock Outstanding - Basic and Diluted	39,418,302		34,107,640
Net Loss per Share Attributable to Common Stockholders - Basic and Diluted	$	(0.04)	$	(0.04)

Schedule of Potentially Dilutive Securities

The following table includes the potential shares of common stock that were excluded from the computation of diluted EPS attributable to common stockholders for the periods indicated because including them would have had an anti-dilutive effect:

	Three Months Ended March 31,
	2026	2025
Warrants to Purchase Common Stock	3,984,484	3,984,484
Options to Purchase Common Stock	3,200,049	1,884,476
Convertible Preferred Stock	1,405,001	1,391,045
Unvested Restricted Stock Units	1,073,330	383,326
Unvested Restricted Stock Units - Market Condition	717,000	—
Unvested Restricted Stock Awards	—	891
Total	10,379,864	7,644,222

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Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 2026

Revenue from Contract with Customer [Abstract]

Schedule of Disaggregation of Revenue

Revenue is disaggregated by primary geographical market, major product line, and timing of revenue recognition.

In thousands	Three Months Ended March 31, 2026
Products By Geographic Area	Total		U.S.		Rest of World
Concentrate Product Sales - Point-in-Time	$	17,336	$	14,563	$	2,773
Net Revenue	$	17,336	$	14,563	$	2,773

In thousands	Three Months Ended March 31, 2025
Products By Geographic Area	Total		U.S.		Rest of World
License Fee – Over Time	$	325	$	—	$	325
Concentrate Product Sales - Point-in-Time	18,589		16,436		2,153
Net Revenue	$	18,914	$	16,436	$	2,478

Schedule of Contract Balance

The following table provides information about receivables, contract assets, and contract liabilities from contracts with customers.

In thousands	March 31, 2026		December 31, 2025		January 1, 2025
Accounts Receivable, net	$	8,825	$	8,143	$	8,291
Contract Liabilities, which are included in Deferred License Revenue	$	—	$	—	$	475

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Intangible Assets and Deferred Consideration (Tables)

3 Months Ended

Mar. 31, 2026

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets

The details of our intangible assets subject to amortization are set forth below (in thousands):

	March 31, 2026
	Useful Life	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Customer Relationships	20 years	$	11,035	$	(1,517)	$	9,518

	December 31, 2025
	Useful Life	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Customer Relationships	20 years	$	11,035	$	(1,379)	$	9,656

Schedule of Future Amortization Expense

Estimated future amortization expense on the Company's customer relationships intangible asset as of March 31, 2026 is as follows (table in thousands):

Year ending December 31:
2026 (Remainder of Year)	$	414
2027	552
2028	552
2029	552
2030	552
Thereafter	6,896
Total	$	9,518

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Investments - Available-for-Sale (Tables)

3 Months Ended

Mar. 31, 2026

Investments, Debt and Equity Securities [Abstract]

Schedule of Investments Available-for-Sale

Investments available-for-sale consisted of the following as of March 31, 2026 and December 31, 2025 (table in thousands):

	March 31, 2026
	Amortized Cost		Unrealized Gain		Unrealized Loss		Accrued Interest		Fair Value
Available-for-Sale Securities
Debt Securities	$	14,142	$	139	$	—	$	—	$	14,281

	December 31, 2025
	Amortized Cost		Unrealized Gain		Unrealized Loss		Accrued Interest		Fair Value
Available-for-Sale Securities
Debt Securities	$	14,149	$	137	$	—	$	—	$	14,286

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Segment Reporting (Tables)

3 Months Ended

Mar. 31, 2026

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

The Company’s significant segment expenses for its one segment for the three months ended March 31, 2026 and 2025 consisted of the following (table in thousands):

	Three Months Ended March 31,
	2026		2025
Net Sales	$	17,336	$	18,914
Cost of Sales	14,439		15,872
Gross Profit	2,897		3,042
Employee Compensation	2,735		2,678
Administrative Costs	1,642		1,724
Operating Loss	(1,480)		(1,360)
Other Income (Expense):
Realized Gain on Available-for-Sale Investments	120		56
Interest Expense	(282)		(277)
Interest Income	37		66
Total Other Expense, net	(125)		(155)
Net Loss	$	(1,605)	$	(1,515)

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Inventory (Tables)

3 Months Ended

Mar. 31, 2026

Inventory Disclosure [Abstract]

Schedule of Components of Inventory

Components of inventory, net of reserves, as of March 31, 2026 and December 31, 2025 were as follows (table in thousands):

	March 31, 2026		December 31, 2025
Inventory - Current Portion
Raw Materials	$	1,599	$	1,848
Work in Process	241		199
Finished Goods	1,215		1,377
Total Inventory	$	3,055	$	3,424

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Property and Equipment (Tables)

3 Months Ended

Mar. 31, 2026

Property, Plant and Equipment [Abstract]

Schedule of Major Classes of Property and Equipment

As of March 31, 2026 and December 31, 2025, the Company’s property and equipment consisted of the following (table in thousands):

	March 31, 2026		December 31, 2025
Machinery and Equipment	$	10,273	$	11,340
Information Technology & Office Equipment	1,686		1,717
Leasehold Improvements	1,378		1,567
Laboratory Equipment	725		726
Total Property and Equipment	14,062		15,350
Accumulated Depreciation and Amortization	(9,734)		(10,721)
Property and Equipment, net	$	4,328	$	4,629

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Accrued Liabilities (Tables)

3 Months Ended

Mar. 31, 2026

Payables and Accruals [Abstract]

Schedule of Accrued Liabilities

Accrued liabilities as of March 31, 2026 and December 31, 2025 consisted of the following (table in thousands):

	March 31, 2026		December 31, 2025
Accrued Compensation and Benefits	$	1,344	$	2,558
Accrued Unvouchered Receipts	880		814
Accrued Workers Compensation	79		84
Other Accrued Liabilities	857		881
Total Accrued Liabilities	$	3,160	$	4,337

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Stockholder's Equity (Tables)

3 Months Ended

Mar. 31, 2026

Equity [Abstract]

Schedule of Common Stock Reserved for Issuance

As of March 31, 2026 and 2025, the Company reserved for issuance the following shares of common stock related to the potential exercise of employee stock options, unvested restricted stock, convertible preferred stock, and warrants (collectively, "common stock equivalents"):

	As of March 31,
Common Stock and Common Stock Equivalents:	2026	2025
Common Stock	39,470,299	34,257,903
Options to Purchase Common Stock	3,200,049	1,884,476
Unvested Restricted Stock Awards	—	891
Unvested Restricted Stock Units	1,073,330	383,326
Convertible Preferred Stock	1,405,001	1,391,045
Unvested Restricted Stock Units - Market Condition	717,000	—
Warrants to Purchase Common Stock	3,984,484	3,984,484
Total	49,850,163	41,902,125

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Stock-based Compensation (Tables)

3 Months Ended

Mar. 31, 2026

Share-Based Payment Arrangement [Abstract]

Schedule of Total Stock-Based Compensation Expense

The Company recognized total stock-based compensation expense during the three months ended March 31, 2026 and 2025 as follows (table in thousands):

	Three Months Ended March 31,
	2026		2025
Service-based Awards:
Restricted Stock Units	$	193	$	294
Stock Option Awards	286		151
Total	$	479	$	445

Schedule of Restricted Stock Awards

A summary of the Company’s performance-based restricted stock awards during the three months ended March 31, 2026 is as follows:

Performance-based Restricted Stock Awards	Number of Shares	Weighted Average Grant-Date Fair Value
Unvested at January 1, 2026	891	$	62.70
Forfeited	(891)	$	62.70
Unvested at March 31, 2026	—	$	—

Schedule of Restricted Stock Units

A summary of the Company’s service-based restricted stock units during the three months ended March 31, 2026 is as follows:

Service-based Restricted Stock Units	Number of Shares	Weighted Average Grant-Date Fair Value
Unvested at January 1, 2026	1,156,660	$	1.11
Vested	(83,330)	1.39
Unvested at March 31, 2026	1,073,330	$	1.09

Schedule of Stock Options Activity

A summary of the Company’s service-based stock option activity for the three months ended March 31, 2026 is as follows:

Service-based Stock Option Awards	Shares Underlying Options	Weighted Average Exercise Price		Weighted Average Remaining Contractual Term	Aggregate Intrinsic Value (in thousands)
Outstanding at January 1, 2026	3,276,564	$	2.64
Forfeited	(43,832)	1.19
Expired	(32,683)	10.32
Outstanding at March 31, 2026	3,200,049	$	2.56	7.83	$	3
Exercisable at March 31, 2026	1,182,664	$	4.77	6.44	$	—

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Leases (Tables)

3 Months Ended

Mar. 31, 2026

Leases [Abstract]

Schedule of Lease Costs

The following summarizes quantitative information about the Company’s operating and finance leases (table in thousands):

	Three Months Ended March 31,
	2026		2025
Operating Leases
Operating Lease Cost	$	523	$	426
Variable Lease Cost	70		128
Operating Lease Expense	593		554
Finance Leases
Amortization of Right-of-Use Assets	102		139
Interest on Lease Obligations	12		23
Finance Lease Expense	114		162
Short-term Lease Rent Expense	5		5
Total Lease Expense	$	712	$	721
Other Information
Operating Cash Flows from Operating Leases	$	419	$	433
Operating Cash Flows from Finance Leases	$	12	$	23
Financing Cash Flows from Finance Leases	$	115	$	146

	March 31,
	2026		2025
Weighted-average Remaining Lease Term – Operating Leases	3.8		2.2
Weighted-average Remaining Lease Term – Finance Leases	1.4		2.2
Weighted-average Discount Rate – Operating Leases	9.8	%	6.2	%
Weighted-average Discount Rate – Finance Leases	6.8	%	6.4	%

Schedule of Operating Lease Maturities

Future minimum rental payments under operating and finance lease agreements are as follows (table in thousands):

	Operating		Finance
Year ending December 31, 2026 (Remaining)	$	1,398	$	378
Year ending December 31, 2027	1,533		311
Year ending December 31, 2028	973		—
Year ending December 31, 2029	953		—
Year ending December 31, 2030	794		—
Remaining future payments	117		—
Total	5,768		689
Less Present Value Discount	(1,016)		(31)
Operating and Finance Lease Liabilities	$	4,752	$	658

Schedule of Finance Lease Maturities

Future minimum rental payments under operating and finance lease agreements are as follows (table in thousands):

	Operating		Finance
Year ending December 31, 2026 (Remaining)	$	1,398	$	378
Year ending December 31, 2027	1,533		311
Year ending December 31, 2028	973		—
Year ending December 31, 2029	953		—
Year ending December 31, 2030	794		—
Remaining future payments	117		—
Total	5,768		689
Less Present Value Discount	(1,016)		(31)
Operating and Finance Lease Liabilities	$	4,752	$	658

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Loan and Security Agreement (Tables)

3 Months Ended

Mar. 31, 2026

Debt Disclosure [Abstract]

Schedule of Principal Payments on Term Loan

The following table reflects the schedule of principal payments on the Term Loans as of March 31, 2026 (table in thousands):

Year	Principal Payments
2026 (Remaining)	$	—
2027	3,871
2028	4,223
2029 (Inclusive of Final Fee)	1,336
Total Debt Maturities	9,430
Unamortized Issuance Costs and Discount	(516)
Total Debt Maturities, net of Unamortized Issuance Costs and Discount	8,914
Less: Current Portion of Term Loans	(707)
Term Loans, net	$	8,207

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Liquidity and Capital Resources (Details) - USD ($) $ in Thousands		3 Months Ended
	Jan. 02, 2024	Mar. 31, 2026	Mar. 31, 2025
Debt Instrument [Line Items]
Cash and cash equivalents and investments available-for-sale		$ 23,900
Working capital		27,100
Net cash used in operating activities		(167)	$ (3,487)
Loan and Security Agreement, Term loan | Term loan
Debt Instrument [Line Items]
Period for which company is entitled to make interest-only payments	30 months
Loan and Security Agreement, Term loan | Term loan | Maximum
Debt Instrument [Line Items]
Period for which company is entitled to make interest-only payments	36 months
Cantor Fitzgerald & Co | At-the-Market Offering
Debt Instrument [Line Items]
Remaining consideration on ATM facility		$ 13,100

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Basis of Presentation, Summary of Significant Accounting Policies and Recent Accounting Pronouncements - Schedule of Basic and Diluted Net Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Numerator:
Net Loss	$ (1,605)	$ (1,515)
Net Loss (Income) Attributable to Common Stockholders basic	(1,605)	(1,515)
Net Loss (Income) Attributable to Common Stockholders diluted	$ (1,605)	$ (1,515)
Denominator:
Weighted Average Number of Shares of Common Stock Outstanding - Basic (in shares)	39,418,302	34,107,640
Weighted Average Number of Shares of Common Stock Outstanding - Diluted (in shares)	39,418,302	34,107,640
Net (Loss) Income per Share Attributable to Common Stockholders - Basic and Diluted (in dollars per share)	$ (0.04)	$ (0.04)
Net (Loss) Income per Share Attributable to Common Stockholders - Basic and Diluted (in dollars per share)	$ (0.04)	$ (0.04)

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Basis of Presentation, Summary of Significant Accounting Policies and Recent Accounting Pronouncements - Schedule of Potentially Dilutive Securities (Details) - shares	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Net Earnings per Share
Securities excluded from diluted loss per share calculation (in shares)	10,379,864	7,644,222
Warrants to Purchase Common Stock
Net Earnings per Share
Securities excluded from diluted loss per share calculation (in shares)	3,984,484	3,984,484
Options to Purchase Common Stock
Net Earnings per Share
Securities excluded from diluted loss per share calculation (in shares)	3,200,049	1,884,476
Convertible Preferred Stock
Net Earnings per Share
Securities excluded from diluted loss per share calculation (in shares)	1,405,001	1,391,045
Unvested Restricted Stock Units
Net Earnings per Share
Securities excluded from diluted loss per share calculation (in shares)	1,073,330	383,326
Unvested Restricted Stock Units - Market Condition
Net Earnings per Share
Securities excluded from diluted loss per share calculation (in shares)	717,000	0
Unvested Restricted Stock Units - Market Condition
Net Earnings per Share
Securities excluded from diluted loss per share calculation (in shares)	0	891

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Revenue Recognition - Nature of Goods and Services (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2026 USD ($) agreement segment	Mar. 31, 2025 USD ($)	Dec. 31, 2025 USD ($)
Revenue Recognition [Line Items]
Number of operating segments | segment	1
Customers average payment term	30 days
Distributors average payment term	60 days
Number of distribution and license agreements | agreement	3
Net revenue	$ 17,336	$ 18,914
Products Purchase Agreement
Revenue Recognition [Line Items]
Product purchase agreement, quarterly non-refundable payments to ensure supply commitment			$ 2,000
Revenue recorded		$ 900
Sun Pharma, Jeil Pharma, and Drogsan Pharma
Revenue Recognition [Line Items]
Deferred revenue	$ 300
Fresenius Medical Care North America | Revenue Benchmark | Customer Concentration Risk
Revenue Recognition [Line Items]
Customer concentration, percentage	11.00%	10.00%
Fresenius Medical Care North America | Accounts Receivable | Customer Concentration Risk
Revenue Recognition [Line Items]
Customer concentration, percentage	17.00%
Nipro Medical Corporation | Revenue Benchmark | Customer Concentration Risk
Revenue Recognition [Line Items]
Customer concentration, percentage	10.00%
Nipro Medical Corporation | Accounts Receivable | Customer Concentration Risk
Revenue Recognition [Line Items]
Customer concentration, percentage	17.00%
Da Vita | Revenue Benchmark | Customer Concentration Risk
Revenue Recognition [Line Items]
Customer concentration, percentage		27.00%
Da Vita | Accounts Receivable | Customer Concentration Risk
Revenue Recognition [Line Items]
Customer concentration, percentage			14.00%

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Revenue Recognition - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Disaggregation of Revenue [Line Items]
Net Revenue	$ 17,336	$ 18,914
U.S.
Disaggregation of Revenue [Line Items]
Net Revenue	14,563	16,436
Rest of World
Disaggregation of Revenue [Line Items]
Net Revenue	2,773	2,478
License Fee – Over Time | Concentrates product license fee
Disaggregation of Revenue [Line Items]
Net Revenue		325
License Fee – Over Time | Concentrates product license fee | U.S.
Disaggregation of Revenue [Line Items]
Net Revenue		0
License Fee – Over Time | Concentrates product license fee | Rest of World
Disaggregation of Revenue [Line Items]
Net Revenue		325
License Fee – Over Time | Concentrate Product Sales
Disaggregation of Revenue [Line Items]
Net Revenue	17,336
License Fee – Over Time | Concentrate Product Sales | U.S.
Disaggregation of Revenue [Line Items]
Net Revenue	14,563
License Fee – Over Time | Concentrate Product Sales | Rest of World
Disaggregation of Revenue [Line Items]
Net Revenue	$ 2,773
Transferred at Point in Time [Member] | Concentrate Product Sales
Disaggregation of Revenue [Line Items]
Net Revenue		18,589
Transferred at Point in Time [Member] | Concentrate Product Sales | U.S.
Disaggregation of Revenue [Line Items]
Net Revenue		16,436
Transferred at Point in Time [Member] | Concentrate Product Sales | Rest of World
Disaggregation of Revenue [Line Items]
Net Revenue		$ 2,153

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Revenue Recognition - Schedule of Contract Balances (Details) - USD ($)	Mar. 31, 2026	Dec. 31, 2025	Jan. 01, 2024
Revenue from Contract with Customer [Abstract]
Accounts Receivable, net	$ 8,825,000	$ 8,143,000	$ 8,291,000
Contract Liabilities, which are included in Deferred License Revenue	0	0	$ 475,000
Revenue Recognition [Line Items]
Contract assets	0	0
Accrued chargebacks and distribution fees	700,000	1,000,000.0
Concentrate Product
Revenue Recognition [Line Items]
Reserve for returns	$ 0	$ 0

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Revenue Recognition - Transaction Price Allocated to Remaining Performance Obligations (Details) $ in Millions	Mar. 31, 2026 USD ($)
Revenue from Contract with Customer [Abstract]
Revenue performance obligation	$ 0.0

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Intangible Assets and Deferred Consideration - Schedule of Intangible Assets (Details) - Customer Relationships - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Finite-Lived Intangible Assets [Line Items]
Useful Life	20 years	20 years
Gross Carrying Amount	$ 11,035	$ 11,035
Accumulated Amortization	(1,517)	(1,379)
Total	$ 9,518	$ 9,656

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Intangible Assets and Deferred Consideration - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Finite-Lived Intangible Assets [Line Items]
Share-based payment arrangement	$ 500	$ 436
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 100	$ 100

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Intangible Assets and Deferred Consideration - Schedule of Future Amortization Expense (Details) - Customer Relationships - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Asset Acquisition [Line Items]
2026 (Remainder of Year)	$ 414
2027	552
2028	552
2029	552
2030	552
Thereafter	6,896
Total	$ 9,518	$ 9,656

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Investments - Available-for-Sale - Schedule of Investments Available-for-Sale (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Investments, Debt and Equity Securities [Abstract]
Amortized Cost	$ 14,142	$ 14,149
Unrealized Gain	139	137
Unrealized Loss	0	0
Accrued Interest	0	0
Fair Value	$ 14,281	$ 14,286

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Investments - Available-for-Sale - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Investments, Debt and Equity Securities [Abstract]
Realized gain on available-for-sale investments	$ 120	$ 56

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Segment Reporting (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2026 USD ($)	Mar. 31, 2026 segment	Mar. 31, 2026 tradingDay	Mar. 31, 2025 USD ($) tradingDay
Segment Reporting [Abstract]
Number of reportable segment		1	1	1
Segment Reporting Information [Line Items]
Net Sales	$ 17,336			$ 18,914
Cost of Sales	14,439			15,872
Gross Profit	2,897			3,042
Operating Loss	(1,480)			(1,360)
Other Income (Expense):
Realized Gain on Available-for-Sale Investments	120			56
Interest Expense	(282)			(277)
Interest Income	37			66
Total Other Expense, net	(125)			(155)
Net Loss	(1,605)			(1,515)
Reportable Segment
Segment Reporting Information [Line Items]
Net Sales	17,336			18,914
Cost of Sales	14,439			15,872
Gross Profit	2,897			3,042
Employee Compensation	2,735			2,678
Administrative Costs	1,642			1,724
Operating Loss	(1,480)			(1,360)
Other Income (Expense):
Realized Gain on Available-for-Sale Investments	120			56
Interest Expense	(282)			(277)
Interest Income	37			66
Total Other Expense, net	(125)			(155)
Net Loss	$ (1,605)			$ (1,515)

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Inventory - Schedule of Components of Inventory (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Inventory - Current Portion
Raw Materials	$ 1,599	$ 1,848
Work in Process	241	199
Finished Goods	1,215	1,377
Total Current Inventory	$ 3,055	$ 3,424

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Inventory - Narrative (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Inventory Disclosure [Abstract]
Inventory	$ 3,100	$ 3,400
Inventory, reserve	$ 25	$ 25

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Property and Equipment - Schedule of Major Classes of Property and Equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Property and equipment
Total Property and Equipment	$ 14,062	$ 15,350
Accumulated Depreciation and Amortization	(9,734)	(10,721)
Property and Equipment, net	4,328	4,629
Machinery and Equipment
Property and equipment
Total Property and Equipment	10,273	11,340
Information Technology & Office Equipment
Property and equipment
Total Property and Equipment	1,686	1,717
Leasehold Improvements
Property and equipment
Total Property and Equipment	1,378	1,567
Laboratory Equipment
Property and equipment
Total Property and Equipment	$ 725	$ 726

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Property and Equipment - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment, Disposals	$ 1,700
Accumulated Depreciation, Depletion and Amortization, Sale or Disposal of Property, Plant and Equipment	1,400
Depreciation and amortization expenses	400	$ 400
Proceeds from Sale of Equipment	175	$ 0
Gain (Loss) on Disposition of Property Plant Equipment	$ 200

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Accrued Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Payables and Accruals [Abstract]
Accrued Compensation and Benefits	$ 1,344	$ 2,558
Accrued Unvouchered Receipts	880	814
Accrued Workers Compensation	79	84
Other Accrued Liabilities	857	881
Total Accrued Liabilities	$ 3,160	$ 4,337

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Stockholders’ Equity - Narrative (Details) $ / shares in Units, $ in Millions			3 Months Ended
	Jul. 10, 2023 $ / shares shares	Apr. 06, 2022 USD ($) $ / shares	Mar. 31, 2026 USD ($) $ / shares shares	Dec. 31, 2025 $ / shares shares	Nov. 13, 2024 USD ($)	Jan. 02, 2024 USD ($) $ / shares shares
Class of Stock [Line Items]
Accreted amount			$ 0.5
Preferred shares, shares authorized (in shares) | shares			2,000,000	2,000,000
Preferred shares, par value (in dollars per share) | $ / shares			$ 0.0001	$ 0.0001
Preferred shares, shares issued (in shares) | shares			15,000	15,000
Preferred shares, shares outstanding (in shares) | shares			15,000	15,000
Ownership limitation percentage	0.0999
Armistice Reload Warrant Agreement
Class of Stock [Line Items]
Common stock issuable upon exercise of pre-funded warrants (in shares) | shares	3,750,000
Exercise price of warrant (in dollars per share) | $ / shares	$ 5.13
Warrant anniversary period	54 months
Loan and Security Agreement, Term loan | Term loan
Class of Stock [Line Items]
Common stock issuable upon exercise of pre-funded warrants (in shares) | shares						191,096
Exercise price of warrant (in dollars per share) | $ / shares						$ 1.83
Fair value of warrant						$ 0.2
ATM Facility | COMMON STOCK
Class of Stock [Line Items]
Shares sold (in shares) | shares			0
Series X Convertible Preferred Stock
Class of Stock [Line Items]
Interest rate percentage		1.00%
Common stock trading price (in dollars per share) | $ / shares		$ 22.00
Common stock trading period		30 days
Conversion price (in dollars per share) | $ / shares		$ 11.00
Convertible preferred stock (in shares)		91
Outstanding common stock, percentage		9.90%
Outstanding common stock, not to exceed, percentage		19.90%
Percentage of investment owned		50.00%
Maximum working capital line		$ 5.0
Consideration received		15.0
Stock issuance costs		0.1
Proceeds from sale of equity, net		14.9
Da Vita | Series X Convertible Preferred Stock | Private Placement
Class of Stock [Line Items]
Sale of stock, aggregate consideration authorized		$ 15.0
Common stock trading price (in dollars per share) | $ / shares		$ 1,000
Cantor Fitzgerald & Co | ATM Facility
Class of Stock [Line Items]
Sale of stock, aggregate consideration authorized					$ 25.0
Remaining consideration on ATM facility			$ 13.1

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Stockholder's Equity - Schedule of Common Stock Reserved for Issuance (Details) - shares	Mar. 31, 2026	Dec. 31, 2025	Mar. 31, 2025
Common Stock and Common Stock Equivalents:
Common Stock (in shares)	39,470,299	39,405,302	34,257,903
Options to Purchase Common Stock (in shares)	3,200,049		1,884,476
Convertible Preferred Stock (in shares)	1,405,001		1,391,045
Total (in shares)	49,850,163		41,902,125
Unvested Restricted Stock Awards
Common Stock and Common Stock Equivalents:
Unvested restricted stock awards/units (in shares)	0		891
Unvested Restricted Stock Units
Common Stock and Common Stock Equivalents:
Unvested restricted stock awards/units (in shares)	1,073,330	1,156,660	383,326
Unvested Restricted Stock Units - Market Condition
Common Stock and Common Stock Equivalents:
Convertible Preferred Stock (in shares)	717,000		0
Warrants to Purchase Common Stock
Common Stock and Common Stock Equivalents:
Warrants to Purchase Common Stock (in shares)	3,984,484		3,984,484

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Stock-based Compensation - Schedule of Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation expense	$ 479	$ 445
Restricted Stock Units
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation expense	193	294
Stock Option Awards
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation expense	$ 286	$ 151

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Stock-based Compensation - Schedule of Performance based Restricted Stock Awards (Details) - Restricted stock awards - performance based awards - $ / shares	3 Months Ended
	Mar. 31, 2026	Dec. 31, 2025
Number of Shares
Unvested, beginning (in shares)	0	891
Forfeited (in shares)	(891)
Unvested, ending (in shares)	0	891
Weighted Average Grant-Date Fair Value
Unvested, beginning (in dollars per share)	$ 0	$ 62.70
Forfeitures (in dollars per share)	62.70
Unvested, ending (in dollars per share)	$ 0	$ 62.70

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Stock-based Compensation - Narrative (Details)	1 Months Ended	3 Months Ended
	May 31, 2025 USD ($) shares	Mar. 31, 2026 USD ($) tradingDay $ / shares
Restricted stock awards - performance based awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		20 months
Unrecognized stock-based compensation expense		$ 0
Restricted Stock Units-Market Condition
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized stock-based compensation expense		$ 400,000
Unrecognized stock-based compensation expense, weighted average remaining term		2 years 1 month 20 days
Granted (in shares) | shares	717,000
Granted, grant date fair value	$ 600,000
Share price | $ / shares		$ 2.14
Consecutive trading days | tradingDay		60
Unvested Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized stock-based compensation expense		$ 500,000
Unrecognized stock-based compensation expense, weighted average remaining term		1 year 7 days
Unvested Restricted Stock Units | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		1 year
Unvested Restricted Stock Units | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		3 years
Stock Option Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized stock-based compensation expense, weighted average remaining term		2 years 21 days
Unrecognized stock-based compensation expenses		$ 700,000

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Stock-based Compensation - Schedule of Service based Restricted Stock Units (Details) - Service-based Restricted Stock Units	3 Months Ended
	Mar. 31, 2026 $ / shares shares
Number of Shares
Outstanding beginning (in shares) | shares	1,156,660
Vested (in shares) | shares	(83,330)
Outstanding ending (in shares) | shares	1,073,330
Weighted Average Grant-Date Fair Value
Outstanding beginning (in dollars per share) | $ / shares	$ 1.11
Vested (in dollars per share) | $ / shares	1.39
Outstanding ending (in dollars per share) | $ / shares	$ 1.09

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Stock-based Compensation - Schedule of Service based Stock Options (Details) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2026 USD ($) $ / shares shares
Shares Underlying Options
Outstanding at the end of the period (in shares)	3,200,049
Stock Option Awards
Shares Underlying Options
Outstanding at the beginning of the period (in shares)	3,276,564
Forfeited (in shares)	(43,832)
Expired (in shares)	(32,683)
Outstanding at the end of the period (in shares)	3,200,049
Exercisable at end of period (in shares)	1,182,664
Weighted Average Exercise Price
Outstanding at the beginning of the period (in dollars per share) | $ / shares	$ 2.64
Forfeited (in dollars per share) | $ / shares	1.19
Expired (in dollar per share) | $ / shares	10.32
Outstanding at the end of the period (in dollars per share) | $ / shares	2.56
Exercisable at end of the period (in dollars per share) | $ / shares	$ 4.77
Weighted Average Remaining Contractual Term
Outstanding	7 years 9 months 29 days
Exercisable at end of the period	6 years 5 months 8 days
Aggregate intrinsic Value
Outstanding | $	$ 3
Exercisable at end of the period | $	$ 0

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Commitments and Contingencies (Details)	Oct. 07, 2018 agreement	Mar. 31, 2026 USD ($)	Dec. 31, 2025 USD ($)
Loss Contingencies [Line Items]
Number of additional agreements | agreement	3
Master Services and IP Agreement
Loss Contingencies [Line Items]
Milestone payments | $		$ 0	$ 0

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Leases - Narrative (Details) $ in Thousands	Mar. 31, 2026 USD ($) ft²	Jan. 31, 2026 USD ($)	Dec. 31, 2025 USD ($)
Lessee, Lease, Description [Line Items]
Right-of-use asset | $	$ 4,608		$ 2,569
Corresponding liability | $	$ 4,752	$ 2,500
Michigan | Wixom, Michigan Property One
Lessee, Lease, Description [Line Items]
Facility square footage	51,000
Michigan | Wixom, Michigan Property Two
Lessee, Lease, Description [Line Items]
Facility square footage	17,500
Texas
Lessee, Lease, Description [Line Items]
Facility square footage	51,000
Lessee, renewal term		62 months
Right-of-use asset | $		$ 2,500
Pennsylvania
Lessee, Lease, Description [Line Items]
Facility square footage	16,800
Maximum
Lessee, Lease, Description [Line Items]
Lease term	6 years

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Leases - Schedule of Lease Costs (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Operating Leases
Operating Lease Cost	$ 523	$ 426
Variable Lease Cost	70	128
Operating Lease Expense	593	554
Finance Leases
Amortization of Right-of-Use Assets	102	139
Interest on Lease Obligations	12	23
Finance Lease Expense	114	162
Short-term Lease Rent Expense	5	5
Total Lease Expense	712	721
Other Information
Operating Cash Flows from Operating Leases	419	433
Operating Cash Flows from Finance Leases	12	23
Financing Cash Flows from Finance Leases	$ 115	$ 146
Weighted-average Remaining Lease Term – Operating Leases	3 years 9 months 18 days	2 years 2 months 12 days
Weighted-average Remaining Lease Term – Finance Leases	1 year 4 months 24 days	2 years 2 months 12 days
Weighted-average Discount Rate – Operating Leases	9.80%	6.20%
Weighted-average Discount Rate – Finance Leases	6.80%	6.40%

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Leases - Schedule of Finance Lease and Operating Lease Maturities (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Jan. 31, 2026
Operating
Year ending December 31, 2026 (Remaining)	$ 1,398
Year ending December 31, 2026	1,533
Year ending December 31, 2027	973
Year ending December 31, 2028	953
Year ending December 31, 2029	794
Remaining future payments	117
Total	5,768
Less Present Value Discount	(1,016)
Operating Lease Liabilities	4,752	$ 2,500
Finance
Year ending December 31, 2026 (Remaining)	378
Year ending December 31, 2026	311
Year ending December 31, 2027	0
Year ending December 31, 2028	0
Year ending December 31, 2029	0
Remaining future payments	0
Total	689
Less Present Value Discount	(31)
Finance Lease Liabilities	$ 658

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Loan and Security Agreement - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	Jan. 02, 2024	Mar. 16, 2020	Mar. 31, 2026	Dec. 31, 2025
Debt Instrument [Line Items]
Unamortized Issuance Costs and Discount			$ 1,300
Term loan | Loan and Security Agreement, Term loan
Debt Instrument [Line Items]
Calculation for number of shares of common stock able to be purchased by warrant, percentage of principal amount of relevant term loan funded		3.50%
Common stock issuable upon exercise of pre-funded warrants (in shares)	191,096
Exercise price of warrant (in dollars per share)	$ 1.83
Aggregate principal amount	$ 8,000
Period for which company is entitled to make interest-only payments	30 months
Interest rate, additional percentage added to base percentage	3.50%
Option to add interest rate amount to outstanding principal balance in lieu of paying such amount in cash, percentage	2.00%
Interest rate, base percentage	7.50%
Debt instrument, notice period (at least)	7 days
Debt instrument, prepayment after second anniversary of loan agreement date but on or before third anniversary, percentage	1.00%
Debt instrument, prepayment after third anniversary of loan agreement date through maturity, percentage	0.00%
Fair value of warrant	$ 200
Effective interest rate			11.00%
Outstanding balance			$ 8,914
Unamortized Issuance Costs and Discount			516
Paid-in-kind interest			$ 300	$ 300
Term loan | Loan and Security Agreement, Term loan | Maximum
Debt Instrument [Line Items]
Period for which company is entitled to make interest-only payments	36 months
Term loan | Term loan, first tranche
Debt Instrument [Line Items]
Common stock issuable upon exercise of pre-funded warrants (in shares)		43,388
Exercise price of warrant (in dollars per share)		$ 18.15
Debt discount recognized		$ 500
Debt instrument, additional fee at maturity, percentage		4.375%
Debt instrument, additional fee at maturity, amount		$ 1,000

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Loan and Security Agreement - Schedule of Principal Payments on Term Loan (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Debt Instrument [Line Items]
Unamortized Issuance Costs and Discount	$ (1,300)
Term Loans - Current - Net of Issuance Costs	(707)	$ 0
Term Loans - Long-Term, net of Issuance Costs	8,207	$ 8,826
Term loan
Debt Instrument [Line Items]
Term Loans - Current - Net of Issuance Costs	(707)
Term loan | Loan and Security Agreement, Term loan
Debt Instrument [Line Items]
2026 (Remaining)	0
Long-Term Debt, Maturity, Year One	3,871
Long-Term Debt, Maturity, Year Two	4,223
Long-Term Debt, Maturity, Year Three	1,336
Total Debt Maturities	9,430
Unamortized Issuance Costs and Discount	(516)
Term Loans, net	8,914
Term Loans - Long-Term, net of Issuance Costs	$ 8,207

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Insurance Financing Note Payable (Details) $ in Thousands	Jun. 03, 2025 USD ($) payment	Jun. 04, 2024 USD ($) payment	Mar. 31, 2026 USD ($)	Dec. 31, 2025 USD ($)
Short-term Debt [Line Items]
Insurance financing note payable			$ 66	$ 264
7.89% Note Payable | Notes Payable to Banks
Short-term Debt [Line Items]
Short-term note payable	$ 700	$ 700
Interest rate, base percentage	7.14%	7.89%
Debt instrument, fee amount	$ 200	$ 200
Number of installment payments | payment	10	10
Note payable, final payment	$ 100	$ 100
Insurance financing note payable			$ 100