Mastec's major customers
AT&T accounted for 10% of Mastec's revenue in FY 2025.
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Major customers of Mastec
Customers that Mastec named in its annual report as 10% or more of revenue. A missing year means the customer was below that line or not named.
| Customer | Share of revenue | Change vs prior year | History | Latest filing |
|---|---|---|---|---|
| AT&TT | 10% | new | 4 years | FY 2025 · filed 26 Feb 2026 |
Formerly disclosed
| Customer | Share of revenue | Change vs prior year | History | Latest filing |
|---|---|---|---|---|
| EQTEQT | 20% | last FY 2018 | 1 year | FY 2018 · filed 28 Feb 2019 |
| ATT1 | 18% | last FY 2020 | 5 years | FY 2020 · filed 25 Feb 2021 |
| EnbridgeENB | 16% | last FY 2021 | 2 years | FY 2021 · filed 1 Mar 2024 |
| Energy Transfer Affiliates | 5% | last FY 2020 | 5 years | FY 2020 · filed 25 Feb 2021 |
| Equitrans Midstream Corporation EQT | 4% | last FY 2021 | 4 years | FY 2021 · filed 1 Mar 2022 |
About this data
US-listed companies must disclose revenue from any single customer that reaches 10% of their total (ASC 280). ShadowGraph reads these disclosures from the XBRL data of every 10-K and 20-F we scan, keeps one value per fiscal year (restatements replace earlier values) and links each number to its filing. Companies that describe a customer only as "Customer A" are not listed by name. Figures are as reported; nothing here is investment advice.
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