[144] MasTec, Inc. SEC Filing

Rhea-AI Filing Summary

MasTec, Inc. (MTZ) Form 144 filing reports a proposed sale of 3,000 common shares through Raymond James & Associates on approximately 09/11/2025 with an aggregate market value of $571,170. The shares were originally acquired on 03/19/2015 as director compensation and the filing indicates no securities sold by the same person in the past three months. The notice includes the required representation that the seller is not aware of undisclosed material adverse information about the issuer.

Positive

• Regulatory compliance: Filing made under Rule 144 and includes required seller representations
• Origin of shares disclosed: Shares were acquired as director compensation on 03/19/2015, indicating a long holding period

Negative

• Insider sale: Proposed sale of 3,000 shares (aggregate value $571,170) could be viewed negatively by some investors
• Limited context: Filing does not disclose remaining insider holdings or reason for sale, leaving interpretation incomplete

Insights

Securities Analyst

TL;DR Insider intends to sell a small block of stock acquired as director compensation; filing is routine and informational.

The sale of 3,000 shares with an aggregate market value of $571,170 is disclosed as required under Rule 144. Because the shares were acquired in 2015 as director compensation, they appear to be previously issued restricted or control stock now being resold in compliance with Rule 144. The filing shows no other sales by the same person in the last three months, which reduces concerns about a pattern of insider liquidation. Overall, this is a standard disclosure rather than an event that by itself implies material change to the company’s operating prospects.

Corporate Governance Expert

TL;DR Filing reflects compliance with insider resale rules; significance depends on context and total insider holdings.

The Form 144 documents an intended brokered sale on NYSE and affirms the seller does not possess undisclosed material information. This satisfies disclosure and legal requirements. Material impact depends on the seller’s remaining holdings, timing relative to corporate events, and whether other insiders are selling; none of that context is provided in the filing. From a governance perspective, the filing itself demonstrates procedural transparency.

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

Relationship to Issuer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Raymond James & Associates 880 Carillon Parkway St. Petersburg FL 33716	3000	571170.00	78907954	09/11/2025	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	03/19/2015	Director Compensation	Issuer			3000	03/19/2015	N/A

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Nothing to Report

144: Remarks and Signature

Remarks

Date of Notice

ATTENTION:

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.

Signature

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What does MasTec (MTZ) Form 144 report?

The filing reports a proposed sale of 3,000 common shares through Raymond James on or about 09/11/2025 with an aggregate market value of $571,170.

What were the shares acquired as according to the filing?

The shares were acquired on 03/19/2015 as director compensation.

Did the filer sell any MasTec shares in the past three months?

The filing states Nothing to Report for securities sold during the past three months by the person for whose account the securities are to be sold.

Through which broker will the MasTec shares be sold?

The sale is reported to be executed through Raymond James & Associates at their St. Petersburg, FL office.

Does the filing state the seller knows of undisclosed material information?

By signing the notice, the seller represents they do not know any material adverse information about the issuer that has not been publicly disclosed.