What Allegro MicroSystems, Inc. told the SEC could break it.

Allegro depends heavily on its primary internal assembly and test facility, AMPI, in the Philippines for its sensor and power products; a suspension there could materially impair its ability to assemble and test products.

“We rely heavily on the manufacturing operations at AMPI, which operates as our primary internal assembly and testing facility. We depend on AMPI for our sensor and power products, and if this facility suspends operations, our ability to assemble and test our products could be materially impaired.”

Allegro's revenue is geographically concentrated outside the U.S. (89.7% of FY2026 net sales), with Greater China at 28.0%, Japan 17.0% and Taiwan 10.0%.

“During the fiscal year ended March 27, 2026, sales from customers located outside of the United States in the aggregate accounted for 89.7 % of the Company's total net sales, with Greater China accounting for 28.0 % , Japan accounting for 17.0 % and Taiwan, included in Other Asia with net sales of $ 89,038 , accounting for 10.0 % .”

Two of Allegro's third-party wafer fabrication facilities are in Taiwan — earthquake-prone and exposed to China-Taiwan geopolitical disruption.

“Additionally, two of our third-party wafer fabrication facilities are located in Taiwan, a location where earthquakes are commonplace, and geopolitical changes in China-Taiwan relations could disrupt their operations.”

Chinese export restrictions on rare-earth elements, metals and magnets — including samarium used in Allegro's applications — have already disrupted its ability to source materials and could constrain manufacturing.

“For example, recent foreign export restrictions from China on certain rare-earth elements, metals and magnets, including samarium, used in our applications and in end-user products have disrupted our ability to reliably source materials, and constrained global supply could restrict our ability to manufacture certain products.”

BIS Regulations require licenses to export certain semiconductor chips and chipmaking equipment to China and other designated countries, limiting Allegro's ability to sell into those markets.

“The BIS Regulations place limitations on the ability of companies to export certain semiconductor chips, as well as chipmaking equipment, by requiring companies to obtain licenses to export such products and equipment into China or other designated countries.”