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)