Alberto de Cardenas
Alberto de Cardenas: EVP, General Counsel at MasTec. What Alberto de Cardenas holds in an AI or semiconductor company tracked on Silicon Floor, from their SEC filings, broken down: the shares held and how, then any restricted shares, options or other rights declared.
MasTec (MTZ)
Alberto de Cardenas holds 110,864 MasTec shares (0.14% of the company), worth about $24.7M at the last price, according to the Form 4 of Mar 18, 2026.
- Shares held: 102,780 (0.13%), $22.9M — Held in their own name.
- Shares held: 8,084 (0.01%), $1.8M — Held in a retirement account (By 401(k) Plan).
Declarations
- MasTec (MTZ) — Form 4 of Mar 18, 2026 (EVP, General Counsel): grant or award of 6,269; 110,864 shares after 0000015615-26-000036
- MasTec (MTZ) — Form 4 of Mar 10, 2026 (EVP, General Counsel): shares withheld for tax of 4,838 at $297.81; 104,595 shares after 0000015615-26-000026
- MasTec (MTZ) — Form 4 of Aug 5, 2025 (EVP, General Counsel): open-market sale of 100 at $180.70; open-market sale of 9,900 at $180.70; 109,433 shares after 0000015615-25-000083
- MasTec (MTZ) — Form 4 of Mar 24, 2025 (EVP, General Counsel): shares withheld for tax of 4,319 at $124.03; 119,385 shares after 0000015615-25-000040
- MasTec (MTZ) — Form 4 of Mar 18, 2025 (EVP, General Counsel): grant or award of 14,400; 123,704 shares after 0000015615-25-000027
Sources: SEC Schedules 13D and 13G (stakes above 5%, which count everything a person votes or can acquire within 60 days) and Forms 3, 4 and 5 (the shares a director, officer or 10% owner holds, filed within two business days of each trade). Values at the last price.