What TopBuild Corp. told the SEC could break it.

TopBuild procures the majority of its building products — principally insulation and roofing — from a limited number of large suppliers (four primary fiberglass manufacturers); fiberglass insulation supply allocations have persisted, and loss of a significant supplier or reduced product availability could materially disrupt its business.

“While we are not dependent on a single source of supply, we procure the majority of our building products—principally insulation and roofing materials—from a limited number of large suppliers. Accordingly, the loss of a significant supplier, or a material reduction in the availability of products or components from our suppliers for any reason, could materially disrupt our business and have an adverse effect on our operating results.”

The principal building products TopBuild installs and distributes (notably fiberglass insulation and roofing materials) have been subject to significant past price changes and supply-allocation volatility; a delay between cost increases and TopBuild's ability to raise prices can compress margins.

“Such volatility has resulted in fluctuations in prices and allocations of supply, which have impacted our operating results. Notably, supply allocations for fiberglass insulation have persisted for considerable periods in the recent past.”

2025 US tariffs and trade restrictions (and retaliatory tariffs from China, Mexico, Canada and the EU) affect goods TopBuild buys directly or indirectly, though it states these represent a relatively small portion of material spend and direct impact is believed minimal; it works with suppliers and evaluates pricing to mitigate.

“While we have a limited number of products that we purchase directly or indirectly from jurisdictions exposed to effected or proposed tariffs, such products represent a relatively small portion of our current material spend and we believe the direct impact for our business is minimal.”