NYSE: MTZ
Mastec Inc Stock Ownership - Who owns Mastec?

Insider buying vs selling

Have Mastec Inc insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Ernst N. CsiszarDirector2026-06-036,500$371.17
$2.41MSell
Ava L. ParkerDirector2026-05-1514$434.77
$6.09kSell
Javier Alberto PalomarezDirector2026-05-1521$434.77
$9.13kSell
Ernst N. CsiszarDirector2026-05-1523$434.77
$10.00kSell
Robert J. DwyerDirector2026-05-1521$434.77
$9.13kSell
C. Robert CampbellDirector2026-05-043,000$417.00
$1.25MSell
Javier Alberto PalomarezDirector2026-03-25950$325.43
$309.16kSell
Jorge MasDirector2026-03-1015,958$297.81
$4.75MSell
Cardenas Alberto DeEVP General Counsel2026-03-104,838$297.81
$1.44MSell
Robert E. AppleCOO2026-03-1012,206$297.81
$3.64MSell

1 of 4

MTZ insiders have sold more... subscribe to Premium to read more.
Net Insider Buy/Sell (L12M) Ownership

Be the first to know when MTZ insiders and whales buy or sell their stock.

MTZ Shareholders

What type of owners hold Mastec Inc stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Jorge Mas35.33%27,913,586$10.41BInsider
Blackrock Inc9.25%7,309,609$2.73BInstitution
Jose Ramon Mas6.00%4,737,232$1.77BInsider
Peconic Partners LLC4.53%3,578,431$1.33BInstitution
Vanguard Capital Management LLC3.55%2,804,295$1.05BInstitution
Vanguard Portfolio Management LLC3.51%2,770,038$1.03BInstitution
Hill City Capital LP2.73%2,155,000$803.58MInstitution
State Street Corp2.37%1,869,788$697.23MInstitution
Victory Capital Management Inc2.02%1,592,523$593.84MInstitution
Lone Pine Capital LLC1.94%1,531,050$570.91MInstitution

1 of 3

MTZ vs Engineering & Construction Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
MTZ63.11%36.89%Net SellingNet Selling
EME93.04%4.46%Net SellingNet Selling
STRL83.26%16.74%Net SellingNet Selling
APG80.37%18.60%Net SellingNet Selling
J89.72%5.25%Net BuyingNet Buying

Mastec Stock Ownership FAQ

Who owns Mastec?

Mastec (NYSE: MTZ) is owned by 73.41% institutional shareholders, 42.91% Mastec insiders, and 0.00% retail investors. Jorge Mas is the largest individual Mastec shareholder, owning 27.91M shares representing 35.33% of the company. Jorge Mas's Mastec shares are currently valued at $10.41B.

If you're new to stock investing, here's how to buy Mastec stock.
WallStreetZen does not provide financial advice and does not issue recommendations or offers to buy stock or sell any security.

Information is provided 'as-is' and solely for informational purposes and is not advice. WallStreetZen does not bear any responsibility for any losses or damage that may occur as a result of reliance on this data.