VZ · CIK 732712
What Verizon Communications Inc. told the SEC could break it.
Verizon's disclosures center on the equipment its network runs on and the regulation around it. It depends on a set of major equipment and network suppliers where switching is costly and slow, so its business could be substantially disrupted if it had to replace a major supplier's products or services — especially on short notice. That equipment exposure runs into trade policy: the 2025 U.S. tariffs, and the reciprocal measures they prompted, could raise its cost structure and disrupt its supply chain. As an incumbent local exchange carrier in 31 states and the District of Columbia, it also operates under varying state oversight, pricing rules and service-offering and network-reliability requirements.
3 self-disclosed vulnerabilities, pulled from its own filings, each in the company’s words, with the source. This is the risk register almost nobody reads.
In its own words
What could break it.
Regulatory & policy
- 2025 U.S. tariffs and retaliatory measures raising cost structuremedium
During 2025 the U.S. announced tariffs on goods from various countries (with reciprocal/retaliatory measures); new or increased tariffs and trade restrictions could adversely affect Verizon's cost structure and profitability and cause supply-chain disruptions.
“During the course of 2025, the U.S. government announced tariffs on goods imported from various countries to the U.S. Countries subject to such tariffs have imposed or may in the future impose reciprocal or retaliatory tariffs and other trade measures. New or increased tariffs and other trade restrictions could adversely affect our cost structure and profitability.”
- incumbent local exchange carrier in 31 states + DC subject to state pricing/service oversightlow
Verizon operates as an incumbent local exchange carrier in 31 states and Washington D.C., subject to varying state oversight, pricing rules, service-offering requirements, and new network-reliability/service regulations (e.g., California).
“Verizon operates as an "incumbent local exchange carrier" in 31 states and the District of Columbia. These incumbent operations are subject to various levels of state oversight, pricing rules, and requirements to offer service.”
SEC filing →As of 2026
Supplier concentration
- dependence on major equipment/network suppliers with costly, slow switchingmedium
Due to the cost and time lag of transitioning between suppliers, Verizon's business could be substantially disrupted if it had to replace the products or services of one or more major suppliers — especially on short notice — impairing its ability to provide services or maintain/upgrade networks.
“Due to the cost and time lag that can be associated with transitioning from one supplier to another, our business could be substantially disrupted if we were required to, or chose to, replace the products or services of one or more major suppliers with products or services from another source, especially if the replacement became necessary on short notice.”
SEC filing →As of 2026
The hidden graph
Who it depends on, and who depends on it.
Relationships surfaced from filings, including ones disclosed by the other side, which is how the non-obvious ones come to light.
Its customers
“We provide products and services from approximately 500 suppliers, including key suppliers AT&T, Avaya, Axis, Cisco, Comcast Business, Dell, Elo, Extreme, Five9, Fortinet, Hanwha, Honeywell, HP Poly, HPE/Aruba, Ingenico, Lumen, Microsoft, NiCE, RingCentral, Ubiquiti, Verifone, Verizon, Zebra Technologies and Zoom.”
Cited →
Its suppliers
“Sales to Verizon Communications Inc. represented 16%, 19%, and 22% of our net sales for the years ended March 31, 2025, 2024, and 2023, respectively.”
Cited →“Our largest tenants are T-Mobile, AT&T and Verizon Wireless, which collectively accounted for approximately 90% of our 2025 site rental revenues.”
Cited →
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