[Form 4] MasTec, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Javier Alberto Palomarez, a director of MasTec, Inc. (MTZ), reported equity transactions on 08/15/2025. The filing shows an acquisition of 232 shares of common stock recorded as an acquisition at $0, and a related disposition of 52 shares at $178 each. After these transactions he beneficially owned 11,255 shares (the filing also shows 11,307 before the disposition). The filing explains the 52 shares were withheld by the issuer to pay taxes due upon vesting of restricted stock. The Form 4 is signed on behalf of Mr. Palomarez on 08/19/2025.

Positive

• Director received 232 vested shares, indicating continued alignment of management incentives with shareholder interests
• Tax withholding handled by issuer via share retention, simplifying tax settlement and avoiding an open-market sale by the insider

Negative

• Small reduction in beneficial ownership after withholding (from 11,307 to 11,255 shares), though not material
• Price used for withholding ($178) may reflect current share price at vesting, but reduces outstanding shares held by the insider

Insights

Corporate Governance Expert

TL;DR: Routine equity vesting and tax withholding by a director, not a material governance event.

This Form 4 documents a director receiving vested restricted shares and the issuer withholding a portion to cover taxes. Such transactions are common for executive and director compensation and typically reflect standard equity plan administration rather than a change in control or strategy. The net change in beneficial ownership is small (from 11,307 to 11,255 shares), so there is no evident governance concern or shift in voting power based on the disclosed activity.

Securities / Equity Compensation Analyst

TL;DR: Vesting and withholding recorded; cashless tax-withholding reduced outstanding holdings slightly.

The entry showing 232 shares acquired at $0 is consistent with vesting of restricted stock units or a grant conversion. The disposition of 52 shares at $178 each, noted as withheld to cover taxes, indicates a cashless settlement where the company retained shares to satisfy tax obligations rather than selling on-market. The monetary value reported for the withheld shares ($178 per share) gives a snapshot of the share price used for tax withholding calculations on the vesting date. Overall, the transactions are administrative and have negligible market impact.

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

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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^*

Palomarez Javier Alberto

(Last) (First) (Middle)

1025 CANONGATE DRIVE

(Street)

FLOWER MOUND TX 75022

(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)
08/15/2025

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	08/15/2025		A		232	A	$0	11,307	D
Common Stock	08/15/2025		F		52(1)	D	$178	11,255	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: Javier Palomarez	08/19/2025
	** 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

Who filed the Form 4 for MasTec (MTZ)?

The filing was made for Javier Alberto Palomarez, identified as a director of MasTec, Inc.

What transactions were reported on the Form 4 dated 08/15/2025?

The Form 4 reports an acquisition of 232 common shares (recorded at $0) and a disposition of 52 shares at $178 per share on 08/15/2025.

Why were 52 shares disposed of according to the filing?

The filing explains the 52 shares were withheld by the issuer to pay taxes due upon vesting of restricted stock.

How many shares did Mr. Palomarez beneficially own after the transactions?

Following the reported transactions, the filing shows he beneficially owned 11,255 shares.

When was the Form 4 signed on behalf of the reporting person?

The signature block shows the form was signed for Javier Palomarez on 08/19/2025.