Company: MTZ
Filing Date: 2025-06-26
Form Type: 11-K
Source: 0000015615-25-000062
Chunk: 12

Company: MASTEC INC
Filing Date: 2025-06-26
Form: 11-K
Chunk 12
---
 — |     |                 | — |

* Voluntary Fiduciary Correction Program (DOL)

** Prohibited Transaction Exemption

<div align='center'>12</div>

#### The MasTec, Inc.

#### 401(k) Retirement Plan

#### Employer Identification Number 65-0829355

#### Plan # 002

#### SCHEDULE H, LINE 4i-

#### SCHEDULE OF ASSETS (HELD AT END OF YEAR)

#### December 31, 2024
| (a) |     | (b)                                                             
 Identity of Issuer, Borrower, Lessor or Similar Party           
 Investment Contract #610145 with Bank of America Merrill Lynch: |     | (c)                                       
 Description of Investment Including       
 Maturity Date, Rate of Interest, Par      
 or Maturity Value                         |     | (d)     
 Cost ** |   |     | (e)           
 Current Value |             |
|:----|:----|:----------------------------------------------------------------|:----|:------------------------------------------|:----|:--------|--:|:----|:--------------|------------:|
|     |     | BlackRock Total Return Fund K                                   |     | Mutual Fund                               |     |         |   |     | $             |  93,402,696 |
|     |     | MFS Growth Fund R6                                              |     | Mutual Fund                               |     |         |   |     |               |  60,084,833 |
|     |     | iShares S&P 500 Index Fund Class K                              |     | Mutual Fund                               |     |         |   |     |               |  48,082,396 |
|     |     | Baird Short Term Bond                                           |     | Mutual Fund                               |     |         |   |     |               |  45,795,134 |
|     |     | Columbia Dividend Income Institutional 3 Class                  |     | Mutual Fund                               |     |         |   |     |               |  44,286,208 |
|     |     | Columbia Trust Stable Government Fund                           |     | Stable Value                              |     |         |   |     |               |  28,720,117 |
|     |     | Janus Henderson Enterprise Fund Class N                         |     | Mutual Fund                               |     |         |   |     |               |  26,059,002 |
|     |     | BlackRock Inflation Protected Fund Class K                      |     | Mutual Fund                               |