MasTec shares fall as investors digest recent insider-sale filings and a post-earnings pullback

MasTec, Inc. (MTZ) is down 4.1% today. Here is some analysis on what might have caused this price movement.

Analysis: There does not appear to be a single, company-specific headline driving the move, so the decline looks consistent with a pullback after a strong run following the company’s latest quarterly results and guidance update. Recent insider-selling disclosures (including a proposed sale notice and subsequent sale filing) may also be weighing on sentiment at the margin.

Details:

MasTec reported first-quarter 2026 results and increased its full-year 2026 financial guidance, which helped set expectations and likely contributed to a run-up that can later see profit-taking.

Company filings show an insider filed a Rule 144 notice in early May for a proposed sale of common shares, followed by a Form 4 reporting an insider sale shortly thereafter.

An 8-K filed in late May disclosed the final voting results from MasTec’s May 2026 annual meeting, which may have refocused attention on governance and shareholder items even without a direct fundamental change.

This could also be because broader weakness in infrastructure/engineering and construction-related stocks can amplify day-to-day volatility in names that have recently outperformed.

Sources:

MasTec Investor Relations (press release & SEC filings), SEC EDGAR, Yahoo Finance

Disclaimer: This price movement analysis was generated with the help of AI. Please double-check the information provided for mistakes.

$MTZ Insider Trading Activity

$MTZ insiders have traded $MTZ stock on the open market 2 times in the past 6 months. Of those trades, 0 have been purchases and 2 have been sales.

Here’s a breakdown of recent trading of $MTZ stock by insiders over the last 6 months:

C ROBERT CAMPBELL sold 3,000 shares for an estimated $1,251,000
JAVIER ALBERTO PALOMAREZ sold 950 shares for an estimated $309,158

To track insider transactions, check out Quiver Quantitative's insider trading dashboard. You can access data on insider stock transactions through the Quiver Quantitative API insider transaction endpoint.

$MTZ Hedge Fund Activity

We have seen 419 institutional investors add shares of $MTZ stock to their portfolio, and 356 decrease their positions in their most recent quarter.

Here are some of the largest recent moves:

PECONIC PARTNERS LLC added 1,978,431 shares (+123.7%) to their portfolio in Q1 2026, for an estimated $636,540,389
VICTORY CAPITAL MANAGEMENT INC added 1,690,896 shares (+178.6%) to their portfolio in Q4 2025, for an estimated $367,550,063
LONE PINE CAPITAL LLC added 1,531,050 shares (+inf%) to their portfolio in Q1 2026, for an estimated $492,600,027
MACQUARIE GROUP LTD removed 615,973 shares (-100.0%) from their portfolio in Q4 2025, for an estimated $133,894,051
THIRD POINT LLC removed 605,000 shares (-65.4%) from their portfolio in Q1 2026, for an estimated $194,652,700
JACOBS LEVY EQUITY MANAGEMENT, INC removed 596,913 shares (-98.5%) from their portfolio in Q1 2026, for an estimated $192,050,788
CANADA PENSION PLAN INVESTMENT BOARD added 488,849 shares (+325.6%) to their portfolio in Q1 2026, for an estimated $157,282,277

To track hedge funds' stock portfolios, check out Quiver Quantitative's institutional holdings dashboard. You can access data on hedge funds moves and 13F filings through the Quiver Quantitative API 13F endpoint.

$MTZ Congressional Stock Trading

Members of Congress have traded $MTZ stock 3 times in the past 6 months. Of those trades, 0 have been purchases and 3 have been sales.

Here’s a breakdown of recent trading of $MTZ stock by members of Congress over the last 6 months:

SENATOR MARKWAYNE MULLIN has traded it 3 times. They made 0 purchases and 3 sales worth up to $150,000 on 02/04, 12/18.

To track congressional stock trading, check out Quiver Quantitative's congressional trading dashboard. You can access data on congressional stock trades through the Quiver Quantitative API Congress trades endpoint.

$MTZ Analyst Ratings

Wall Street analysts have issued reports on $MTZ in the last several months. We have seen 1 firms issue buy ratings on the stock, and 0 firms issue sell ratings.

Here are some recent analyst ratings:

Truist Securities issued a "Buy" rating on 12/18/2025

To track analyst ratings and price targets for $MTZ, check out Quiver Quantitative's $MTZ forecast page.

$MTZ Price Targets

Multiple analysts have issued price targets for $MTZ recently. We have seen 18 analysts offer price targets for $MTZ in the last 6 months, with a median target of $476.5.

Here are some recent targets:

An analyst from CICC set a target price of $480.0 on 05/21/2026
Joseph Osha from Guggenheim set a target price of $480.0 on 05/13/2026
Sangita Jain from Keybanc set a target price of $500.0 on 05/13/2026
Drew Chamberlain from JP Morgan set a target price of $491.0 on 05/13/2026
Manish A. Somaiya from Cantor Fitzgerald set a target price of $545.0 on 05/11/2026
Maheep Mandloi from Mizuho set a target price of $498.0 on 05/05/2026
Justin Hauke from Baird set a target price of $473.0 on 05/04/2026

This article is not financial advice. See Quiver Quantitative's disclaimers for more information. Note that there may be inaccuracies due to mistakes in ticker-mapping, and other anomalies.