SEC Form 4 · Updated Daily

MTZ

— MASTEC, INC. Ownership

Insider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.

Financials Ownership

Current Reporting Owners

Owner	Role	Shares Owned	As Of	Last Activity
MAS JORGE	Director	4,556,686	2026-03-18	A
MAS JOSE RAMON	Director · Officer	3,254,461	2026-03-18	A
SHANFELTER AUSTIN J	Director	626,678	2008-08-08	M
Apple Robert E	Officer	183,591	2026-03-18	A
Pita George	Officer	156,475	2023-03-19	F
DE CARDENAS ALBERTO I	Officer	102,780	2026-03-18	A
JOHNSON JULIA L	Director	73,474	2026-08-14	A
HEUVELEN JOHN VAN	Director	70,946	2017-05-15	A
DiMarco Paul	Officer	66,627	2026-03-18	A
Harris Ray	Officer	54,025	2012-12-31	F
SORZANO JOSE S	Director	43,861	2020-11-13	A
Campbell C Robert	Officer	30,880	2026-08-14	A
Jaumot Frank E	Director	21,112	2016-05-13	A
Dwyer Robert J	Director	20,991	2026-08-14	A
de Cespedes Carlos M	Director	13,901	2006-05-18	A
Csiszar Ernst N	Director	10,968	2026-08-14	A
Palomarez Javier Alberto	Director	10,805	2026-08-14	A
Love Timothy Michael	Officer	10,292	2026-03-17	A
Restrepo Daniel A	Director	6,294	2015-08-14	A
Parker Ava L	Director	5,569	2026-08-14	A
Miranda Manuel Benito	Director	152	2026-08-14	A
Spiro Alex	Director	139	2026-08-14	A

Recent Filings

Date	Owner	Activity	Shares	Price	Owned After
2026-08-14	Parker Ava L	Tax withholding	20	$297.59	5,549
2026-08-14	Parker Ava L	Grant / award	177	$0.00	5,569
2026-08-14	JOHNSON JULIA L	Grant / award	139	$0.00	73,474
2026-08-14	Dwyer Robert J	Tax withholding	31	$297.59	20,960
2026-08-14	Dwyer Robert J	Grant / award	139	$0.00	20,991
2026-08-14	Spiro Alex	Grant / award	139	$0.00	139
2026-08-14	Campbell C Robert	Grant / award	139	$0.00	30,880
2026-08-14	Csiszar Ernst N	Tax withholding	34	$297.59	10,934
2026-08-14	Csiszar Ernst N	Grant / award	152	$0.00	10,968
2026-08-14	Palomarez Javier Alberto	Tax withholding	31	$297.59	10,774
2026-08-14	Palomarez Javier Alberto	Grant / award	139	$0.00	10,805
2026-08-14	Miranda Manuel Benito	Grant / award	152	$0.00	152
2026-08-11	MAS JORGE	J (derivative)	1,099,335	—	1,099,335
2026-08-11	MAS JORGE	J (derivative)	1,099,335	—	0
2026-08-11	MAS JOSE RAMON	J (derivative)	340,794	—	340,794
2026-08-11	MAS JOSE RAMON	J (derivative)	340,794	—	0
2026-06-03	Csiszar Ernst N	Open-market sale	6,500	$371.17	10,816
2026-05-15	JOHNSON JULIA L	Grant / award	95	$0.00	73,335
2026-05-15	Palomarez Javier Alberto	Tax withholding	21	$434.77	10,666
2026-05-15	Palomarez Javier Alberto	Grant / award	95	$0.00	10,687
2026-05-15	Campbell C Robert	Grant / award	95	$0.00	30,741
2026-05-15	Parker Ava L	Tax withholding	14	$434.77	5,392
2026-05-15	Parker Ava L	Grant / award	121	$0.00	5,406
2026-05-15	Dwyer Robert J	Tax withholding	21	$434.77	20,852
2026-05-15	Dwyer Robert J	Grant / award	95	$0.00	20,873
2026-05-15	Csiszar Ernst N	Tax withholding	23	$434.77	17,316
2026-05-15	Csiszar Ernst N	Grant / award	104	$0.00	17,339
2026-05-04	Campbell C Robert	Open-market sale	3,000	$417.00	30,646
2026-03-25	Palomarez Javier Alberto	Open-market sale	950	$325.43	10,592
2026-03-18	MAS JOSE RAMON	Grant / award	26,397	$0.00	3,254,461
2026-03-18	MAS JORGE	Grant / award	15,838	$0.00	4,556,686
2026-03-18	DE CARDENAS ALBERTO I	Grant / award	6,269	$0.00	102,780
2026-03-18	Apple Robert E	Grant / award	11,548	$0.00	183,591
2026-03-18	DiMarco Paul	Grant / award	9,074	$0.00	66,627
2026-03-17	Love Timothy Michael	Grant / award	492	$0.00	10,292
2026-03-10	DE CARDENAS ALBERTO I	Tax withholding	4,838	$297.81	96,511
2026-03-10	Apple Robert E	Tax withholding	12,206	$297.81	172,043
2026-03-10	MAS JOSE RAMON	Tax withholding	28,184	$297.81	3,228,064
2026-03-10	MAS JORGE	Tax withholding	15,958	$297.81	4,540,848
2026-03-03	Csiszar Ernst N	Open-market sale	6,500	$300.40	17,235

Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.