On the Record · Otter Tail
Otter Tail subsidiaries, as it lists them
The subsidiaries Otter Tail lists in its latest annual report, with the jurisdiction of each, linked to the filing.
Subsidiaries it lists
| Subsidiary | Jurisdiction |
|---|---|
| BTD Manufacturing, Inc. | Minnesota |
| Northern Pipe Products, Inc. | North Dakota |
| Otter Tail Assurance Limited | Cayman Islands |
| Otter Tail Power Company | Minnesota |
| T.O. Plastics, Inc. | Minnesota |
| Varistar Corporation | Minnesota |
| Vinyltech Corporation | Arizona |
From Exhibit 21 of the 10-K for 2025. Companies must list their significant subsidiaries there and may leave out smaller ones, so this is the company’s own list, not every entity it owns.
Read from Otter Tail’s annual reports (10-K for 2025, 10-K for 2024, 10-K for 2023) and the financial data it files with the SEC, as of 2026-02-18. Every quotation is word for word from the filing linked beside it; how these pages are built and checked. The full record is in its company data sheet.