SCHEDULE: Vanguard Group Reports Zero MasTec Stake Post-Realignment

The Vanguard Group has filed an amended Schedule 13G, reporting zero beneficial ownership in MasTec Inc. common stock following an internal realignment on January 12, 2026.

Summary

• The Vanguard Group filed an Amendment No. 9 to Schedule 13G for MasTec Inc. common stock.
• As of March 13, 2026, The Vanguard Group reports 0 shares beneficially owned, representing 0% of the class.
• This change is due to an internal realignment on January 12, 2026, where certain subsidiaries and business divisions of The Vanguard Group, Inc. will now report beneficial ownership separately.
• The Vanguard Group, Inc. no longer has, or is deemed to have, beneficial ownership over securities beneficially owned by these disaggregated subsidiaries and/or business divisions.
• The filing certifies that the securities were acquired and held in the ordinary course of business and not for the purpose of changing or influencing control of MasTec Inc.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as a neutral administrative filing by The Vanguard Group, reflecting a change in their internal reporting structure rather than a change in investment thesis regarding MasTec Inc.

Future Outlook

No forward-looking statements or guidance for MasTec Inc. are provided in this administrative filing.

Management Comments

• On January 12, 2026, The Vanguard Group, Inc. went through an internal realignment. In accordance with SEC Release No. 34-39538 (January 12, 1998), certain subsidiaries or business divisions of subsidiaries of The Vanguard Group, Inc., that formerly had, or were deemed to have, beneficial ownership with The Vanguard Group, Inc., will report beneficial ownership separately (on a disaggregated basis) from The Vanguard Group, Inc. in reliance on such release.
• Further in accordance with SEC Release No. 34-39538 (January 12, 1998), The Vanguard Group, Inc. no longer has, or is deemed to have, beneficial ownership over securities beneficially owned by such subsidiaries and/or business divisions.
• The securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under 240.14a-11.

Industry Context

StockSavvy.ai notes that this filing reflects a procedural change in how large institutional investors like Vanguard report their holdings, rather than a strategic divestment from MasTec Inc. This disaggregation of reporting is a common practice for large asset managers to comply with SEC regulations following internal restructurings.

Comparison to Industry Standards

• This filing is a standard regulatory update for a large institutional investor. It does not provide performance metrics for MasTec Inc. that would allow for comparison to industry standards or specific comparable companies/projects.

Stakeholder Impact

• Shareholders of MasTec Inc. might initially perceive a large institutional investor reducing its stake, but the explanation clarifies it's a reporting change, not a divestment.
• The Vanguard Group's internal stakeholders are impacted by the new reporting structure.

Key Dates

Keywords

MasTec Inc., Vanguard Group, Schedule 13G, Beneficial Ownership, Common Stock, SEC Filing, Institutional Ownership, Investment Management