What Lumen Technologies, Inc. told the SEC could break it.

Many of Lumen's domestic network facilities sit in regions prone to hurricanes, tornadoes, earthquakes, floods and wildfires, which have disrupted operations before and can cause downed lines, flooded facilities, outages and business interruption.

“Many of our domestic facilities are located in regions susceptible to severe weather and natural disasters, including tropical storms, hurricanes, tornadoes, earthquakes, floods, wildfires, or other casualty events.”

As a holding company, substantially all of Lumen's income and operating cash flow depends on its subsidiaries (Level 3 Financing, Qwest) distributing earnings upstream; that debt carries extensive covenants and change-of-control repurchase obligations amid continued net losses.

“As a holding company, substantially all of our income and operating cash flow is dependent upon the earnings of our subsidiaries and their distribution of those earnings to us in the form of dividends, loans or other payments.”

New or increased U.S. tariffs (and foreign retaliation) on imported goods could raise the cost of the network equipment Lumen buys and disrupt its supply chain.

“Changes in U.S. or foreign government policies may result in modifications to existing trade agreements, the imposition of new tariffs, or significant increases in existing tariffs on goods imported into the U.S., as well as retaliatory measures by foreign governments.”