Brand
Johns Manville
Johns Manville manufactures building insulation, roofing, and fiberglass products. The 2025 10-K says it is based in Denver.
Documented stakes
Johns Manville Corporation is an Exhibit 21 subsidiary as of December 31, 2025.
As of Dec 31, 2025. Last checked Sep 22, 2026.
- Berkshire Hathaway Form 10-K for the year ended December 31, 2025 · U.S. Securities and Exchange Commission
- Berkshire Hathaway Exhibit 21, subsidiaries of the registrant · U.S. Securities and Exchange Commission