Ernst N. Csiszar

CIK: 0001341639

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)3 (15.8%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)8 (42.1%)

Compensation grants

Other (G, F, J, C, D, …)8 (42.1%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

MTZ

MASTEC INC

Director

Discretionary Trading P&L

Holdings

Transaction History (19 total)

MTZ
MASTEC INC
Aug 14, 2026
Tax Payment(F)
Direct
34 shares at avg. $297.59$10K
MTZ
MASTEC INC
Aug 14, 2026
Award(A)
Direct
152 shares-
MTZ
MASTEC INC
Jun 3, 2026
Sale(S)
Direct
6.5K shares at avg. $371.17$2.4M
MTZ
MASTEC INC
May 15, 2026
Tax Payment(F)
Direct
23 shares at avg. $434.77$10K
MTZ
MASTEC INC
May 15, 2026
Award(A)
Direct
104 shares-
MTZ
MASTEC INC
Mar 3, 2026
Sale(S)
Direct
6.5K shares at avg. $300.40$2.0M
MTZ
MASTEC INC
Feb 13, 2026
Award(A)
Direct
168 shares-
MTZ
MASTEC INC
Feb 13, 2026
Tax Payment(F)
Direct
37 shares at avg. $269.53$10K
MTZ
MASTEC INC
Nov 14, 2025
Tax Payment(F)
Direct
52 shares at avg. $192.22$10K
MTZ
MASTEC INC
Nov 14, 2025
Award(A)
Direct
235 shares-
MTZ
MASTEC INC
Aug 15, 2025
Award(A)
Direct
254 shares-
MTZ
MASTEC INC
Aug 15, 2025
Tax Payment(F)
Direct
56 shares at avg. $178.00$10K
MTZ
MASTEC INC
May 15, 2025
Award(A)
Direct
287 shares-
MTZ
MASTEC INC
May 15, 2025
Tax Payment(F)
Direct
64 shares at avg. $157.32$10K
MTZ
MASTEC INC
Mar 24, 2025
Sale(S)
Direct
2.5K shares at avg. $131.63$331K
MTZ
MASTEC INC
Feb 14, 2025
Award(A)
Direct
332 shares-
MTZ
MASTEC INC
Feb 14, 2025
Tax Payment(F)
Direct
74 shares at avg. $135.78$10K
MTZ
MASTEC INC
Nov 15, 2024
Tax Payment(F)
Direct
74 shares at avg. $135.32$10K
MTZ
MASTEC INC
Nov 15, 2024
Award(A)
Direct
333 shares-

		Type	Shares	Price		Ownership
Aug 14, 2026	MTZ MASTEC INC	Tax Payment(F)	34	$297.59	$10,118	Direct
Aug 14, 2026	MTZ MASTEC INC	Award(A)	152	-	$0	Direct
Jun 3, 2026	MTZ MASTEC INC	Sale(S)	6,500	$371.17	$2,412,605	Direct
May 15, 2026	MTZ MASTEC INC	Tax Payment(F)	23	$434.77	$10,000	Direct
May 15, 2026	MTZ MASTEC INC	Award(A)	104	-	$0	Direct
Mar 3, 2026	MTZ MASTEC INC	Sale(S)	6,500	$300.40	$1,952,600	Direct
Feb 13, 2026	MTZ MASTEC INC	Award(A)	168	-	$0	Direct
Feb 13, 2026	MTZ MASTEC INC	Tax Payment(F)	37	$269.53	$9,973	Direct
Nov 14, 2025	MTZ MASTEC INC	Tax Payment(F)	52	$192.22	$9,995	Direct
Nov 14, 2025	MTZ MASTEC INC	Award(A)	235	-	-	Direct
Aug 15, 2025	MTZ MASTEC INC	Award(A)	254	-	-	Direct
Aug 15, 2025	MTZ MASTEC INC	Tax Payment(F)	56	$178.00	$9,968	Direct
May 15, 2025	MTZ MASTEC INC	Award(A)	287	-	-	Direct
May 15, 2025	MTZ MASTEC INC	Tax Payment(F)	64	$157.32	$10,068	Direct
Mar 24, 2025	MTZ MASTEC INC	Sale(S)	2,517	$131.63	$331,321	Direct
Feb 14, 2025	MTZ MASTEC INC	Award(A)	332	-	-	Direct
Feb 14, 2025	MTZ MASTEC INC	Tax Payment(F)	74	$135.78	$10,048	Direct
Nov 15, 2024	MTZ MASTEC INC	Tax Payment(F)	74	$135.32	$10,014	Direct
Nov 15, 2024	MTZ MASTEC INC	Award(A)	333	-	$0	Direct

1-19 of 19 transactions

About Csiszar Ernst N

Csiszar Ernst N (SEC CIK 0001341639) files insider reports with the SEC as Director of MASTEC INC (MTZ).

Signal8 holds 11 ownership filings by Csiszar Ernst N, all Form 4s, filed between Nov 19, 2024 and Aug 18, 2026. Those filings report 19 transactions, from Nov 15, 2024 to Aug 14, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Csiszar Ernst N's filings is in COLUMBIA, SC.

Recent filings by Csiszar Ernst N

Aug 14, 2026: Tax withholding of MTZ shares (Form 4, code F).
Aug 14, 2026: Grant or award of MTZ shares (Form 4, code A).
Jun 3, 2026: Open-market sale of MTZ shares (Form 4, code S).
May 15, 2026: Tax withholding of MTZ shares (Form 4, code F).
May 15, 2026: Grant or award of MTZ shares (Form 4, code A).

Other insiders filing for MASTEC INC (MTZ)

How to read Form 4 transaction codes