Company: MTZ
Filing Date: 2025-06-26
Form Type: 11-K
Source: 0000015615-25-000062
Chunk: 9

Company: MASTEC INC
Filing Date: 2025-06-26
Form: 11-K
Chunk 9
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<div align='center'>9</div>

NOTE D — NONPARTICIPANT-DIRECTED INVESTMENTS

Information about the net assets and significant components of changes in net assets related to the investment that includes nonparticipant-directed amounts is as follows:

|                           |     | December 31, |        2024 |     |   |       2023 |
|:--------------------------|:----|:-------------|------------:|:----|:--|-----------:|
| MasTec, Inc. common stock |     | $            | 135,133,907 |     | $ | 73,184,662 |

| Changes in Net Assets                         |     | Year Ended        
 December 31, 2024 |             |
|:----------------------------------------------|:----|:------------------|------------:|
| Contributions                                 |     | $                 |  17,646,272 |
| Net appreciation in fair value of investments |     |                   |  61,255,679 |
| Benefits paid to participants                 |     |                   | -10,491,915 |
| Transfers                                     |     |                   |  -4,101,051 |
| Other                                         |     |                   |  -2,359,740 |
|                                               |     | $                 |  61,949,245 |

NOTE E — TAX STATUS

The Company adopted a Prototype Non-standardized Profit-Sharing Plan from Merrill Lynch and the Plan is subject to a favorable IRS opinion letter dated June 30, 2020, indicating that the Plan and related trust are designed in accordance with applicable sections of the Internal Revenue Code (“IRC”). The Plan administrator believes that the Plan is designed, and is currently being operated, in compliance with the applicable requirements of the IRC and, therefore, believes that the Plan is qualified, and the related trust is tax-exempt.

Accounting principles generally accepted in the United States of America require plan management to evaluate tax positions taken by the plan and recognize a tax liability if the plan has taken an uncertain position that more likely than not would not be sustained upon examination by the IRS. The Plan is subject to routine audits by taxing jurisdictions; however, there are currently no audits for any tax periods in progress.

NOTE F — RISKS AND UNCERTAINTIES

The Plan invests in various investment securities. Investment securities are exposed to various risks, such as interest rate, market and credit risk. Due to the level of risk associated with certain investment securities and the level of uncertainty