How significant is the MasTec (MTZ) COO’s 12,206-share disposition?

The 12,206-share disposition reflects tax withholding rather than a strategic sale. Given Apple’s post-transaction direct holdings of 172,043 shares, plus additional indirect holdings, the event appears as routine compensation and tax settlement activity instead of a major change in ownership.

MasTec (MTZ) COO reports tax-withholding share disposition on vested stock

Filing Impact

(Very High)

Filing Sentiment

(Neutral)

Form Type

Rhea-AI Filing Summary

MasTec COO Robert E. Apple reported a routine tax-related share disposition. On March 10, 2026, 12,206 shares of common stock were withheld by the company at $297.81 per share to cover taxes due upon vesting of restricted stock, rather than sold on the open market.

After this withholding, Apple directly owned 172,043 common shares. He also held 12,068.373 shares indirectly through a 401(k) plan, and 85,750 additional shares had been contributed to The Apple Family Trust, where he and his wife serve as trustees and beneficiaries. The filing reflects compensation and tax settlement activity rather than discretionary trading.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider Apple Robert E

Role COO

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock	12,206	$297.81	$3.64M
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 172,043 shares (Direct); Common Stock — 12,068.373 shares (Indirect, By 401(k) Plan)

Footnotes (1)

Shares disposed of represent shares withheld by the Issuer to pay taxes due upon vesting of restricted stock. 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.

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Form 4 Insider Transactions: What Each Field Means →

03/12/2026 - 04:29 PM

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^*

Apple Robert E

(Last)

(First)

(Middle)

800 S DOUGLAS ROAD, 12TH FLOOR

(Street)

CORAL GABLES

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)
03/10/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	03/10/2026		F		12,206⁽¹⁾	D	$297.81	172,043⁽²⁾	D
Common Stock								12,068.373	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. Shares disposed of represent shares withheld by the Issuer to pay taxes due upon vesting of restricted stock.

2. 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	03/12/2026
	** 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.

Source: View Original Filing on SEC EDGAR

FAQ

What insider transaction did MasTec (MTZ) COO Robert E. Apple report?

MasTec COO Robert E. Apple reported a tax-withholding disposition of 12,206 common shares. The company withheld these shares at $297.81 each to pay taxes due when his restricted stock vested, rather than selling them in the open market.

Was the MasTec (MTZ) COO’s Form 4 transaction an open-market sale?

No, the transaction was not an open-market sale. The 12,206 shares were withheld by MasTec to satisfy tax obligations from restricted stock vesting, a common non-discretionary mechanism, rather than shares Apple chose to sell on the market.

How many MasTec (MTZ) shares does the COO hold after the tax withholding?

After the tax withholding, Robert E. Apple directly held 172,043 MasTec common shares. He also had 12,068.373 shares indirectly through a 401(k) plan, plus 85,750 shares contributed to The Apple Family Trust, where he and his wife are trustees and beneficiaries.

What does the Form 4 say about MasTec (MTZ) restricted stock vesting?

The filing explains that the disposed shares represent stock withheld to pay taxes due when restricted stock vested. This shows the reported transaction stems from compensation-related vesting, with shares surrendered for taxes rather than being sold by the COO in the market.