[Form 4] MASTEC INC Insider Trading Activity

Rhea-AI Filing Summary

Robert E. Apple, Chief Operating Officer of MasTec Inc. (MTZ), reported insider sales executed under a 10b5-1 trading plan on September 18, 2025. The filing shows 9,900 shares sold at a weighted average price of $200.43 and an additional 100 shares sold at $201.06, executed across 47 separate transactions with prices ranging from $200.03 to $201.00. The 10,000 shares sold under the plan represent 5.15% of Mr. Apple’s directly owned MasTec shares. After these transactions the filing reports direct beneficial ownership of 184,349 and 184,249 shares on the respective lines, and 12,068.3991 shares held indirectly via a 401(k) plan. The filing notes a contribution of 85,750 shares to The Apple Family Trust included in the reported holdings.

Positive

• Sales executed under a 10b5-1 plan, indicating the transactions were pre-planned and intended to provide an affirmative defense to insider trading claims
• Detailed disclosure including weighted average price, price range, and an undertaking to provide per-transaction details on request

Negative

• Reduction of direct ownership: 10,000 shares sold represent 5.15% of the reporting person’s directly owned MasTec shares
• Multiple sales executed in 47 transactions may attract investor attention despite being pre-planned

Insights

Securities Analyst

TL;DR: Routine, pre-planned insider sales under a 10b5-1 program; modest reduction in direct stake, no new concerns disclosed.

The transaction is described as part of an established 10b5-1 plan, executed in multiple tranches at prices between $200.03 and $201.00, yielding a weighted average of $200.43 for the bulk sale. Because the sales were made under an affirmative defense plan, they indicate pre-planned disposition rather than opportunistic trading. The reporting clarifies the composition of holdings, including an 85,750-share transfer to a family trust and 401(k)-plan holdings, which helps reconcile direct versus indirect ownership figures. There are no derivative transactions or amendments disclosed in this filing.

Corporate Governance Expert

TL;DR: Insiders used a documented Rule 10b5-1 plan to reduce concentration; disclosure is thorough and compliant.

The filing includes explicit statements about the 10b5-1 plan and a weighted-average sale price with an undertaking to provide transaction-level details on request, reflecting transparency. The signature and attestation elements are present. The filing also discloses related-party vehicle holdings (family trust) and 401(k) plan holdings, improving clarity about indirect ownership. From a governance perspective, these elements align with standard disclosure practices and do not indicate undisclosed related-party transactions or material governance issues.

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).

X

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^*

Apple Robert E

(Last) (First) (Middle)

800 S DOUGLAS ROAD, 12TH FLOOR

(Street)

CORAL GABLES FL 33134

(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)

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

3. Date of Earliest Transaction (Month/Day/Year)
09/18/2025

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	09/18/2025		S		9,900(1)	D	$200.43(2)	184,349	D
Common Stock	09/18/2025		S		100(1)	D	$201.06	184,249(3)	D
Common Stock								12,068.3991	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:

1. Mr. Apple, 75 years old, is systematically reducing his portfolio concentration in MasTec shares through a 10b5-1 plan, which has more than one pricing tranche. These 10,000 shares sold under the plan represent 5.15% of the shares directly owned by Mr. Apple.

2. The price reported in Column 4 is a weighted average price. These shares were sold in 47 separate transactions, with prices ranging from $200.03 to $201.00 for an average weighted sales price of $200.43. 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.

3. Includes 85,750 shares of MasTec common stock contributed by the reporting person to The Apple Family Trust of which the reporting person and his wife are trustees and beneficiaries.

Remarks:

	\s\ Alberto de Cardenas For: Robert Apple	09/22/2025
	** 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 insider transactions did Robert E. Apple report for MTZ?

The filing reports sales on 09/18/2025 of 9,900 shares at a weighted average of $200.43 and 100 shares at $201.06, executed under a 10b5-1 plan.

Were the sales by Robert E. Apple planned under a Rule 10b5-1 trading plan?

Yes. The form is checked to indicate the transactions were made pursuant to a 10b5-1 plan intended to satisfy Rule 10b5-1(c) affirmative defense conditions.

How much of Mr. Apple’s direct stake did the reported sales represent?

The filing states the 10,000 shares sold under the plan represent 5.15% of Mr. Apple’s directly owned MasTec shares.

Does the filing disclose indirect holdings or transfers?

Yes. It reports 12,068.3991 shares held indirectly via a 401(k) plan and notes 85,750 shares contributed to The Apple Family Trust included in the reported holdings.

What price range did the reported sales occur at?

The sales occurred in 47 separate transactions with prices ranging from $200.03 to $201.00, producing a weighted average of $200.43 for the primary tranche.