MASTEC INC
For the period ended Sep 30, 2026. Filed Oct 29, 2026.
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A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.
Sep 30, 2026 · Filed Oct 29, 2026
MTZ$180.84-4.3%Stored close · as of Nov 10, 2026
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Item 6. Exhibits
The Exhibit Index below contains a list of exhibits filed or furnished with this Form 10-Q.
| Exhibits | Description |
| 4.1 | Twenty-Second Supplemental Indenture, dated as of August 17, 2026, between MasTec, Inc. and U.S. Bank Trust Company, National Association, as trustee, filed as Exhibit 4.2 to our Current Report on Form 8-K with the SEC on August 17, 2026 and incorporated by reference herein. |
| 4.2 | Form of 5.850% Senior Notes due 2036, filed as Exhibit 4.3 and included in Exhibit 4.2 to our Current Report on Form 8-K with the SEC on August 17, 2026 and incorporated by reference herein. |
| 10.1 | Term Loan Agreement, dated as of July 7, 2026, by and among MasTec, Inc. and MasTec North America, Inc., as Borrowers, Bank of America, N.A., as Administrative Agent, and the other lenders party thereto, filed as Exhibit 10.1 to our Current Report on Form 8-K filed with the SEC on July 7, 2026 and incorporated by reference herein. |
| 10.2 | Amendment No. 1 to Amended and Restated Credit Agreement, dated as of July 7, 2026, by and among MasTec, Inc. and MasTec North America, Inc. as Borrowers, Bank of America, N.A., as Administrative Agent, Swing Line Lender and L/C Issuer, and the other lenders party thereto, filed as Exhibit 10.2 to our Current Report on Form 8-K filed with the SEC on July 7, 2026 and incorporated by reference herein. |
| 31.1* | Certifications required by Section 302(a) of the Sarbanes-Oxley Act of 2002. |
| 31.2* | Certifications required by Section 302(a) of the Sarbanes-Oxley Act of 2002. |
| 32.1** | Certifications required by Section 906 of the Sarbanes-Oxley Act of 2002. |
| 32.2** | Certifications required by Section 906 of the Sarbanes-Oxley Act of 2002. |
| 95.1* | Mine Safety Disclosures. |
| 101.INS | Inline XBRL Instance Document - The instance document does not appear in the interactive data file because its XBRL tags are embedded within the Inline XBRL document. |
| 101.SCH | Inline XBRL Taxonomy Extension Schema |
| 101.CAL | Inline XBRL Taxonomy Extension Calculation Linkbase |
| 101.DEF | Inline XBRL Taxonomy Extension Definition Linkbase |
| 101.LAB | Inline XBRL Taxonomy Extension Label Linkbase |
| 101.PRE | Inline XBRL Taxonomy Extension Presentation Linkbase |
| 104 | The cover page of MasTec, Inc.’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2026, formatted in Inline XBRL (included with the Exhibit 101 attachments). |
- Filed herewith.
** Furnished herewith.
The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.