SEC Form 4 reporting owner

Csiszar Ernst N

Csiszar Ernst N has filed 8 Form 4 transactions reported between February 13, 2026 and August 14, 2026, as Director of MASTEC INC.

Name as filed: Csiszar Ernst N

Open-market buys, 24 mo

None

reported

Open-market sales, 24 mo

$4.4M

2 lines

Companies

with Form 4 filings

Latest transaction

Aug 14, 2026

transaction date

Roles and reported holdings

MTZMASTEC INC
Feb 13, 2026 – Aug 14, 2026
Director
Held directly10,934 sh as of Aug 14, 2026 · Form 4
24 months: $4.4M sold

Transaction history

All 8 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

Date	Company	Type	Shares	Price	Value	Owned after	Filing
Aug 14, 2026	MTZDirector	Shares withheld for tax or exercise priceCode F · direct	34	$297.59	$10K@ $297.59	10,934	Form 4
Aug 14, 2026	MTZDirector	Grant or awardCode A · direct	152	—	—	10,968	Form 4
Jun 3, 2026	MTZDirector	Open-market saleCode S · direct	6,500	$371.17	$2.4M@ $371.17	10,816	Form 4
May 15, 2026	MTZDirector	Shares withheld for tax or exercise priceCode F · direct	23	$434.77	$10K@ $434.77	17,316	Form 4
May 15, 2026	MTZDirector	Grant or awardCode A · direct	104	—	—	17,339	Form 4
Mar 3, 2026	MTZDirector	Open-market saleCode S · direct	6,500	$300.40	$2.0M@ $300.40	17,235	Form 4
Feb 13, 2026	MTZDirector	Shares withheld for tax or exercise priceCode F · direct	37	$269.53	$10K@ $269.53	23,735	Form 4
Feb 13, 2026	MTZDirector	Grant or awardCode A · direct	168	—	—	23,772	Form 4

How this page is built

Every row comes from a Form 4 filed with the SEC, which officers, directors and holders of more than 10% of a company’s stock must file within two business days of a trade. Transactions are grouped by the reporting owner’s name as filed (spacing, capitals and punctuation ignored); two different people filing under an identical name would appear together, and one person filing under two spellings appears on two pages.

Open-market totals count code P purchases and code S sales over the last 24 months. The same trade reported on more than one filing is counted once; when another owner (for example a fund and its general partner) reports the identical trade, they are listed beside it. Holdings are the shares owned after the latest purchase, sale, gift or tax-withholding line, shown separately for direct and indirect ownership; an indirect figure is one holding line, not a total across every trust or entity.

This page describes what was filed with the SEC; it is not investment advice or a recommendation to buy or sell any security.