MasTec (NYSE: MTZ) EVP granted 6,269 shares, now holds 102,780 directly

Rhea-AI Filing Summary

de Cardenas Alberto reported acquisition or exercise transactions in this Form 4 filing.

MasTec Inc. executive vice president and general counsel Alberto de Cardenas received a stock grant of 6,269 shares of Common Stock on March 18, 2026, at no cash cost per share. This compensation-related award is not an open-market purchase.

After the grant, he directly owns 102,780 Common Stock shares. He also has an indirect position of 8,083.719 shares held through a 401(k) Plan, reflecting retirement-plan holdings in addition to his direct stake.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider de Cardenas Alberto

Role EVP, General Counsel

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	6,269	$0.00	--
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 102,780 shares (Direct); Common Stock — 8,083.719 shares (Indirect, By 401(k) Plan)

Footnotes (1)

Form 4 Insider Transactions: What Each Field Means →

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^*

de Cardenas Alberto

(Last) (First) (Middle)

800 S DOUGLAS ROAD, 12TH FLOOR

(Street)

CORAL GABLES FLORIDA 33134

(City) (State) (Zip)

UNITED STATES

(Country)

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

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP, General Counsel

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/18/2026

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

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

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

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	03/18/2026		A		6,269	A	$0	102,780	D
Common Stock								8,083.719	I	By 401(k) Plan

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:

Remarks:

	Alberto de Cardenas	03/20/2026
	** 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).
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.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did MasTec (MTZ) report for Alberto de Cardenas?

MasTec reported that Alberto de Cardenas received a grant of 6,269 shares of Common Stock on March 18, 2026. The shares were awarded at no cash cost as compensation, rather than purchased in the open market.

How many MasTec (MTZ) shares does Alberto de Cardenas now hold directly?

Following the March 18, 2026 stock grant, Alberto de Cardenas directly owns 102,780 shares of MasTec Common Stock. This figure reflects his updated direct holdings after receiving the 6,269-share compensation award disclosed in the Form 4 filing.

Was the recent MasTec (MTZ) insider transaction a stock purchase or a grant?

The transaction was a stock grant, not a purchase. Alberto de Cardenas received 6,269 shares of MasTec Common Stock at a reported price of $0.00 per share, indicating a compensation-related award rather than an open-market buying transaction.

Does Alberto de Cardenas have indirect MasTec (MTZ) share holdings?

Yes. In addition to his direct stake, the filing shows 8,083.719 MasTec Common Stock shares held indirectly through a 401(k) Plan. This reflects retirement-plan ownership separate from his 102,780 directly held shares after the reported stock grant.

What does the Form 4 indicate about MasTec (MTZ) derivative positions for this insider?

The Form 4 lists no derivative transactions or remaining derivative positions for Alberto de Cardenas. The activity disclosed relates solely to Common Stock, highlighting a straightforward equity grant and updated holdings, without options or other derivatives in this filing.