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

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-05-04 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: MASTEC INC (MTZ) CIK: 0000015615 --- Reporting Owner --- Name: Campbell C Robert CIK: 0001307261 Role: Director --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-05-04 | Code: S (Open market sale) Shares: -3,000 | Price: $417.00 Total Value: $1,251,000.00 Shares Owned After: 30,646 | Ownership: D (Direct) Footnotes: [F1] These shares were sold in 14 separate transactions, each with a price of $417.00. The reporting person undertakes to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission upon request, full information regarding the number of shares sold in each transaction. --- Footnotes (Complete Index) --- F1: These shares were sold in 14 separate transactions, each with a price of $417.00. The reporting person undertakes to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission upon request, full information regarding the number of shares sold in each transaction. --- Signature --- /s/ \s\ Alberto de Cardenas For: Robert Campbell (2026-05-06)