MasTec (MTZ) Form 4 shows director equity vesting and tax withholding

Rhea-AI Filing Summary

MasTec, Inc. (MTZ) reported a Form 4 transaction for a director. On 11/14/2025, the director acquired 235 shares of MasTec common stock at a stated price of $0, which typically reflects vesting of equity awards rather than an open-market purchase. On the same date, 52 shares of common stock were disposed of at $192.22 per share, and the filing explains that these shares were withheld by the company to pay taxes due upon the vesting of restricted stock. After these transactions, the director beneficially owned 23,604 shares of MasTec common stock held directly.

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)
11/14/2025

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	11/14/2025		A		235	A	$0	23,656	D
Common Stock	11/14/2025		F		52(1)	D	$192.22	23,604	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	11/18/2025
	** 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What Form 4 transaction did MasTec (MTZ) report for its director?

The Form 4 shows that a MasTec (MTZ) director had restricted stock vest, resulting in the acquisition of 235 common shares and the withholding of 52 shares to cover taxes.

How many MasTec (MTZ) shares does the director own after this Form 4?

Following the reported transactions on 11/14/2025, the director beneficially owned 23,604 shares of MasTec common stock, held directly.

What was the purpose of the 52 MasTec (MTZ) shares disposed of in the Form 4?

The Form 4 explains that the 52 shares were withheld by MasTec to pay taxes due upon the vesting of restricted stock, rather than being sold in an open-market transaction.

At what price were the MasTec (MTZ) shares disposed of in the Form 4?

The 52 shares of MasTec common stock disposed of to cover taxes were valued at $192.22 per share.

Did the MasTec (MTZ) director report any derivative securities on this Form 4?

No derivative securities are listed as acquired, disposed of, or beneficially owned in Table II of this Form 4 excerpt.

What is the director’s relationship to MasTec (MTZ) as reported in the Form 4?

The filing identifies the reporting person’s relationship to MasTec, Inc. as a Director, with the form filed by one reporting person.