Basis of Presentation, Summary of Significant Accounting Policies and Recent Accounting Pronouncements (Policies)	6 Months Ended
Jun. 30, 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 June 30, 2026, and the condensed consolidated statements of operations, comprehensive loss and, changes in stockholders' equity for the three and six months ended June 30, 2026 and 2025, and the statement of cash flows for the six months ended June 30, 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 six months ended June 30, 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.
Reverse Stock Split	Reverse Stock Split On July 1, 2026, the Company effected a one-for-ten (1-for-10) reverse stock split of its common stock. All share and per-share amounts for all periods presented in these condensed consolidated financial statements — including common shares outstanding, weighted-average shares outstanding, net loss per share, and the shares underlying stock options, restricted stock units, warrants, and the conversion of the Series X Convertible Preferred Stock — have been retrospectively adjusted to reflect the reverse stock split. The par value and the number of authorized shares of common stock were unchanged. The reduction in issued and outstanding shares resulting from the reverse stock split was recorded as a reclassification between common stock and additional paid-in capital, with no change to total stockholders' equity.
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.

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

6 Months Ended

Jun. 30, 2026

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 June 30, 2026, and the condensed consolidated statements of operations, comprehensive loss and, changes in stockholders' equity for the three and six months ended June 30, 2026 and 2025, and the statement of cash flows for the six months ended June 30, 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 six months ended June 30, 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.

Reverse Stock Split

On July 1, 2026, the Company effected a one-for-ten (1-for-10) reverse stock split of its common stock. All share and per-share amounts for all periods presented in these condensed consolidated financial statements — including common shares outstanding, weighted-average shares outstanding, net loss per share, and the shares underlying stock options, restricted stock units, warrants, and the conversion of the Series X Convertible Preferred Stock — have been retrospectively adjusted to reflect the reverse stock split. The par value and the number of authorized shares of common stock were unchanged. The reduction in issued and outstanding shares resulting from the reverse stock split was recorded as a reclassification between common stock and additional paid-in capital, with no change to total stockholders' equity.

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

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.