MasTec (MTZ) director gets share grant and withholds stock to pay taxes

Rhea-AI Filing Summary

MASTEC INC director equity updates: Director Ernst N. Csiszar received a grant of 168 shares of common stock on February 13, 2026, at no cash cost, reflecting a stock-based award. On the same date, 37 shares were disposed of at $269.53 per share to cover taxes due upon the vesting of restricted stock, as indicated by the footnote. After these transactions, Csiszar directly holds 23,735 shares of MASTEC INC common stock.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Csiszar Ernst N

(Last) (First) (Middle)

1579 KATHWOOD DR.

(Street)

COLUMBIA SC 29206

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
MASTEC INC [ MTZ ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
02/13/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	02/13/2026		A		168	A	$0	23,772	D
Common Stock	02/13/2026		F		37(1)	D	$269.53	23,735	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Shares disposed of represent shares withheld by the Issuer to pay taxes due upon vesting of restricted stock.

Remarks:

	\s\ Alberto de Cardenas For: Ernst Csiszar	02/18/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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FAQ

What insider transactions did MASTEC (MTZ) director Ernst N. Csiszar report?

Director Ernst N. Csiszar reported two transactions: a grant of 168 MASTEC common shares at no cash cost and a disposition of 37 shares used to pay taxes upon restricted stock vesting, both dated February 13, 2026.

Did the MASTEC (MTZ) director buy or sell shares on the open market?

The filing shows no open-market buy or sell. Csiszar received 168 shares as an equity grant and 37 shares were disposed of to satisfy tax withholding obligations tied to restricted stock vesting, rather than a voluntary market sale.

How many MASTEC (MTZ) shares does Ernst N. Csiszar own after these transactions?

Following the reported transactions, Ernst N. Csiszar directly owns 23,735 shares of MASTEC common stock. This total reflects both the 168-share grant and the 37-share tax-withholding disposition reported for February 13, 2026.

What does the tax-withholding disposition in the MASTEC (MTZ) Form 4 mean?

The tax-withholding disposition reflects 37 shares withheld by MASTEC to pay taxes due when restricted stock vested. Instead of paying cash, shares are surrendered to cover the tax liability associated with that equity vesting.

What transaction codes appear in the MASTEC (MTZ) Form 4 for Ernst N. Csiszar?

The Form 4 lists code A for a grant or award acquisition of 168 common shares and code F for a tax-withholding disposition of 37 shares used to pay taxes on vested restricted stock, both recorded on February 13, 2026.