MASTEC INC (MTZ) · Insider Trading (Form 4) SEC Filing

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-05-15 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: MASTEC INC (MTZ) CIK: 0000015615 --- Reporting Owner --- Name: Dwyer Robert J CIK: 0001307141 Role: Director --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-05-15 | Code: A (Grant or award) Shares: +95 | Price: $0.00 Shares Owned After: 20,873 | Ownership: D (Direct) [Transaction #2] Security: Common Stock Date: 2026-05-15 | Code: F (Payment of exercise/tax) Shares: -21 | Price: $434.77 Total Value: $9,130.17 Shares Owned After: 20,852 | Ownership: D (Direct) Footnotes: [F1] Shares disposed of represent shares withheld by the Issuer to pay taxes due upon vesting of restricted stock. --- Footnotes (Complete Index) --- F1: Shares disposed of represent shares withheld by the Issuer to pay taxes due upon vesting of restricted stock. --- Signature --- /s/ \s\ Alberto de Cardenas For: Robert Dwyer (2026-05-19)