Key facts
- This page summarizes Alex Spiro's Form 4 filing for MASTEC INC (MTZ).
- 1 reported transaction and 0 derivative rows are listed below.
- Accepted by SEC: 18 Aug 2026, 16:40.
Alex Spiro - 14 Aug 2026 Form 4 Insider Report for MASTEC INC (MTZ)
- Reporting relationship
- Director
- Issuer ticker
- MTZ
- Reported as of
- 14 Aug 2026
- Net transaction value
- $0
- SEC form
- 4
- Accepted by SEC
- 18 Aug 2026, 16:40:26 UTC
- Prior SEC filing
- 03 Aug 2026
- Source filing
- View source filing
- Reporting owner signature
- \s\ Alberto de Cardenas For: Alex Spiro
Source evidence
Original filing metadata and source links for verification.
4 source fields
Reporting owner
1 detail
Key filing fact
Alex Spiro filed Form 4 for MASTEC INC (MTZ) on 18 Aug 2026.
Change
- Previous filing in this sequence was filed on 03 Aug 2026.
- Current net transaction value: $0.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0001652478
Primary reporting owner
Spiro Alex
- Relationship
- Director
- Address
- 6312 RIVIERA DRIVE, CORAL GABLES
- Signature
- \s\ Alberto de Cardenas For: Alex Spiro
- Signature date
- 18 Aug 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
MTZ
transaction
Common Stock
Award
- Transaction value
- Shares
- +139
- Change %
- Price
- $0.000000*
- Shares after
- 139
- Date
- 14 Aug 2026
- Ownership
- Direct
* marks a reported price that did not pass the local price check.