[Form 4] MASTEC INC Insider Trading Activity

Rhea-AI Filing Summary

MASTEC INC (MTZ) director Robert Campbell reported the sale of 2,000 shares of common stock on 09/29/2025 at a price of $210.39 per share, reducing his beneficial ownership to 33,277 shares. The Form 4 lists Campbell's address in Coral Gables, FL, and shows the filing was signed on 10/01/2025. The filing states the 2,000 shares were sold in eight separate transactions, each at the same price, and the reporting person offers to provide details of the individual transaction sizes on request. No derivative transactions or other securities changes are reported in this filing.

Positive

• Required disclosure provided: Form 4 lists transaction date, price, shares sold, and post-transaction ownership.
• Commitment to transparency: Reporting person offers to supply detailed per-transaction share counts upon request.

Negative

• Insider sale: Director disposed of 2,000 shares, which could be viewed negatively by some investors.
• Aggregate reporting only: Individual sizes of the eight transactions are not listed in the filing and require a request for full details.

Insights

Corporate Governance Expert

TL;DR: Director sold a small portion of holdings; disclosure appears complete for this transaction.

The filing documents an open-market sale by a director of 2,000 common shares at $210.39, leaving 33,277 shares owned. The report explicitly notes the sale occurred in eight separate trades at the same per-share price and commits to provide detailed breakdowns on request. From a governance and disclosure perspective, the Form 4 contains the required primary facts: transaction date, price, amount sold, post-transaction ownership, and signature. The filing does not include any derivatives or other compensatory grants, limiting the scope to a single non-derivative disposition.

Securities Analyst

TL;DR: Notable insider selling recorded but size relative to total stake is modest; transaction details are limited to aggregate sale counts.

The submission records a disposal of 2,000 shares at $210.39 each on 09/29/2025, executed in eight separate trades, with remaining beneficial ownership of 33,277 shares. The analyst should note the filing provides aggregate sale information and offers to supply per-trade quantities on request, meaning daily trading patterns are not disclosed here. No price-weighted or date-range averages are provided beyond the single listed price and date. Materiality depends on the director's total holdings and company market capitalization, which are not included in this filing.

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
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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).

1. Name and Address of Reporting Person^*

Campbell C Robert

(Last) (First) (Middle)

4145 PINTA COURT

(Street)

CORAL GABLES FL 33146

(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)
09/29/2025

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	09/29/2025		S		2,000(1)	D	$210.39	33,277	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. These shares were sold in eight separate transactions, each with a price of $210.39. The reporting person undertakes to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission upon request, full information regarding the number of shares sold in each transaction.

Remarks:

	\s\ Alberto de Cardenas For: Robert Campbell	10/01/2025
	** 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 did Robert Campbell (MTZ) report on Form 4?

He reported a sale of 2,000 common shares on 09/29/2025 at $210.39 per share, leaving him with 33,277 shares beneficially owned.

When were the shares sold according to the filing?

The transaction date was 09/29/2025 and the Form 4 was signed on 10/01/2025.

Were the sold shares executed in one trade or multiple trades?

The filing states they were sold in eight separate transactions, each at a price of $210.39.

Does the Form 4 report any derivative transactions for Robert Campbell (MTZ)?

No, Table II for derivative securities shows no entries in this filing.

How many shares does Robert Campbell own after the reported sale?

33,277 shares are listed as beneficially owned following the transaction.