Company: MTZ
Filing Date: 2025-06-26
Form Type: 11-K
Source: 0000015615-25-000062
Chunk: 8

Company: MASTEC INC
Filing Date: 2025-06-26
Form: 11-K
Chunk 8
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 | $            |  10,268,513 |     | $ |   7,608,569 |
|                                              |     | $            | 681,309,398 |     | $ | 539,487,621 |

| Investments measured at net asset value: (b) |     |   |            |     |   |            |
|:---------------------------------------------|:----|:--|-----------:|:----|:--|-----------:|
| Stable value funds                           |     | $ | 28,720,117 |     | $ | 26,574,669 |

(a) Mutual funds, MasTec, Inc. common stock and money market funds have been classified within Level 1 of the fair value hierarchy.

(b) In accordance with Subtopic 820-10, certain investments that were measured at net asset value per share (or its equivalent) have not been classified in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the line items presented in the statements of the net assets available for benefits.

Investments Measured Using the Net Asset Value per Share:

The following table summarizes investments for which fair value is measured using the net asset value per share practical expedient as of December 31, 2024 and 2023, respectively.

#### December 31, 2024
|                    |     | Fair Value |            |     | Unfunded    
 Commitments |     | Redemption    
 Frequency     
 (If Currently 
 Eligible)     |     | Redemption 
 Notice     
 Period     |
|:-------------------|:----|:-----------|-----------:|:----|:------------|:----|:--------------|:----|:-----------|
| Stable value funds |     | $          | 28,720,117 |     | N/A         |     | Daily         |     | N/A        |

#### December 31, 2023
|                    |     | Fair Value |            |     | Unfunded    
 Commitments |     | Redemption    
 Frequency     
 (If Currently 
 Eligible)     |     | Redemption 
 Notice     
 Period     |
|:-------------------|:----|:-----------|-----------:|:----|:------------|:----|:--------------|:----|:-----------|
| Stable value funds |     | $          | 26,574,669 |     | N/A         |     | Daily         |     | N/A        |