Security key
576323109
MASTEC INC - Common Stock, Par Value $.10 Per Share (MTZ)
CUSIP: 576323109
Q3 2026 13F Holders as of 30 Sep 2026
- Security type / class
- Equity / Common Stock, Par Value $.10 Per Share
- Total 13F shares
- 754,738
- Total 13F value
- $158,260,345
- Share change
- +74,919
- SEC-reported price per share
- $213.62
- Number of holders
- 81
- Value change
- +$10,726,777
- Number of buys
- 30
- Number of sells
- 54
- Shares outstanding
- 80,325,844
Holder snapshot
6 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q3 2026
Institutions
81
Top holders
10
MTZ full security history
Ownership snapshot
Full 13F holder table
MASTEC INC SEC filings
MASTEC INC company facts
Broader feeds
Reporting periods
Holder history for CUSIP 576323109
Recent filing periods:
Ownership snapshot
Top reported holders of MTZ - MASTEC INC - Common Stock, Par Value $.10 Per Share (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Jorge Mas
Disclosed value leader
Jorge Mas
Comparable rows
15/15
Latest evidence
14 Aug 2026
13D/G
3/4/5
13F
Lead comparable stake: 15%
13D/G row: Jorge Mas
Showing 1-6 of 15 holder rows.
Quick read
Jorge Mas leads the comparable SEC ownership view at 15%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Jorge Mas's linked filing trail.
Comparable ownership
Top 5
Jorge Mas
15%
BlackRock, Inc.
8.1%
Jose Ramon Mas
7.7%
NORDEA INVESTMENT MANAGEMENT AB
2.5%
Robert E. Apple
0.24%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Jorge Mas |
13D/G
3/4/5
Director
|
15%
|
$4,567,438,544
11,872,111 shares
|
-$46,166 | 11 Aug 2026 |
| BlackRock, Inc. |
13F
13D/G
Company
|
8.1%
from 13D/G
|
$3,178,068,993
7,638,487 shares
|
— | 30 Jun 2026 |
| Jose Ramon Mas |
13D/G
3/4/5
CEO, Director
|
7.7%
|
$2,379,527,825
6,185,090 shares
|
-$687,495 | 11 Aug 2026 |
| NORDEA INVESTMENT MANAGEMENT AB |
13D/G
13F
Company
|
2.5%
|
$253,025,284
1,985,758 shares
|
$0 | 30 Sep 2024 |
| Robert E. Apple |
3/4/5
COO
|
0.24%
|
$56,733,391
195,659 shares
|
— | 18 Mar 2026 |
| Alberto de Cardenas |
3/4/5
EVP, General Counsel
|
0.14%
|
$32,146,043
110,864 shares
|
— | 18 Mar 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q3 2026
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
81
Shares
754,738
Rows available
81
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q3 2026 vs Q2 2026 Across Filers
Q2 2026 holders
911
Q3 2026 holders
81
Holder diff
-830
| Investor | Q2 2026 Shares | Q3 2026 Shares | Share Diff | Share Chg % | Q2 2026 value | Q3 2026 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend