[D/A] MASTEC INC SEC Filing

Rhea-AI Filing Summary

MASTEC INC filed an amended Form D reporting an ongoing, exempt equity offering under Rule 506(b). The company indicates an indefinite total offering size with $194,397,549 already sold to 102 investors. The offering began with a first sale on 2021-12-30 and the issuer intends the offering to continue for more than one year. No sales commissions or finders' fees were paid, and the filing reports $0 of proceeds used to pay named officers, directors, or promoters. The filing lists executives and directors at the Coral Gables, Florida principal address and is signed by Alberto de Cardenas as Executive Vice President, General Counsel and Secretary on 2025-10-08.

Positive

• $194,397,549 raised shows substantial capital committed via the offering
• No sales commissions or finders' fees reported, indicating lower transaction costs
• $0 of proceeds used to pay named insiders, reducing related-party distribution concerns

Negative

• Offering marked indefinite, which can extend dilution uncertainty for shareholders
• Limited use-of-proceeds detail disclosed; investors lack specificity on capital deployment

Insights

Securities Attorney

TL;DR: Filing shows a large, ongoing Rule 506(b) equity offering with substantial sales already completed.

The filing documents reliance on Rule 506(b) as the federal exemption, which allows unlimited accredited investors and restricted general solicitation. The issuer reports $194,397,549 sold and an indefinite offering size, which is consistent with private placements that remain open until closed by the issuer.

Key legal items to note are the reported 102 investors and the statement of $0 paid in sales commissions or to named insiders; these disclosures affect state notice requirements and potential transfer restrictions. Expect standard accredited-investor verification and continuing Form D amendment obligations while the offering remains active.

Capital Markets Analyst

TL;DR: The company has raised material private equity capital and kept issuance costs minimal to date.

The filing shows $194,397,549 already sold against an unspecified total (offering marked Indefinite), implying a significant private-capital raise completed via equity units. The reported absence of sales commissions and finders' fees suggests direct placements or institutional investors rather than broker-driven distribution.

Material near-term implications include potential dilution from issued equity and continued capital availability until the issuer closes the offering; monitor any future amendments disclosing additional amounts sold, investor composition changes, or use-of-proceeds details.

The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
The reader should not assume that the information is accurate and complete.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM D

Notice of Exempt Offering of Securities

OMB APPROVAL

OMB Number:			3235-0076
Estimated average burden
hours per response:			4.00

1. Issuer's Identity

CIK (Filer ID Number)

Previous Names

None

Entity Type

0000015615

BURNUP & SIMS INC

X	Corporation
	Limited Partnership
	Limited Liability Company
	General Partnership
	Business Trust
	Other (Specify)

Name of Issuer

MASTEC INC

Jurisdiction of Incorporation/Organization

FLORIDA

Year of Incorporation/Organization

X	Over Five Years Ago
	Within Last Five Years (Specify Year)
	Yet to Be Formed

2. Principal Place of Business and Contact Information

Name of Issuer
MASTEC INC
Street Address 1		Street Address 2
800 S. DOUGLAS ROAD		10TH FLOOR
City	State/Province/Country	ZIP/PostalCode	Phone Number of Issuer
CORAL GABLES	FLORIDA	33134	3055991800

3. Related Persons

Last Name	First Name	Middle Name
Mas	Jorge
Street Address 1	Street Address 2
800 S. Douglas Road	12th Floor
City	State/Province/Country	ZIP/PostalCode
Coral Gables	FLORIDA	33134

Relationship: Executive Officer X Director Promoter

Clarification of Response (if Necessary):

Last Name	First Name	Middle Name
Mas	Jose
Street Address 1	Street Address 2
800 S. Douglas Road	12th Floor
City	State/Province/Country	ZIP/PostalCode
Coral Gables	FLORIDA	33134

Relationship: X Executive Officer X Director Promoter

Clarification of Response (if Necessary):

Last Name	First Name	Middle Name
Apple	Robert
Street Address 1	Street Address 2
800 S. Douglas Road	12th Floor
City	State/Province/Country	ZIP/PostalCode
Coral Gables	FLORIDA	33134

Relationship: X Executive Officer Director Promoter

Clarification of Response (if Necessary):

Last Name	First Name	Middle Name
DiMarco	Paul
Street Address 1	Street Address 2
800 S. Douglas Road	12th Floor
City	State/Province/Country	ZIP/PostalCode
Coral Gables	FLORIDA	33134

Relationship: X Executive Officer Director Promoter

Clarification of Response (if Necessary):

Last Name	First Name	Middle Name
de Cardenas	Alberto
Street Address 1	Street Address 2
800 S. Douglas Road	12th Floor
City	State/Province/Country	ZIP/PostalCode
Coral Gables	FLORIDA	33134

Relationship: X Executive Officer Director Promoter

Clarification of Response (if Necessary):

Last Name	First Name	Middle Name
Campbell	Robert
Street Address 1	Street Address 2
800 S. Douglas Road	12th Floor
City	State/Province/Country	ZIP/PostalCode
Coral Gables	FLORIDA	33134

Relationship: Executive Officer X Director Promoter

Clarification of Response (if Necessary):

Last Name	First Name	Middle Name
Csiszar	Ernst
Street Address 1	Street Address 2
800 S. Douglas Road	12th Floor
City	State/Province/Country	ZIP/PostalCode
Coral Gables	FLORIDA	33134

Relationship: Executive Officer X Director Promoter

Clarification of Response (if Necessary):

Last Name	First Name	Middle Name
Dwyer	Robert
Street Address 1	Street Address 2
800 S. Douglas Road	12th Floor
City	State/Province/Country	ZIP/PostalCode
Coral Gables	FLORIDA	33134

Relationship: Executive Officer X Director Promoter

Clarification of Response (if Necessary):

Last Name	First Name	Middle Name
Johnson	Julia
Street Address 1	Street Address 2
800 S. Douglas Road	12th Floor
City	State/Province/Country	ZIP/PostalCode
Coral Gables	FLORIDA	33134

Relationship: Executive Officer X Director Promoter

Clarification of Response (if Necessary):

Last Name	First Name	Middle Name
Palomarez	Javier
Street Address 1	Street Address 2
800 S. Douglas Road	12th Floor
City	State/Province/Country	ZIP/PostalCode
Coral Gables	FLORIDA	33134

Relationship: Executive Officer X Director Promoter

Clarification of Response (if Necessary):

Last Name	First Name	Middle Name
Parker	Ava
Street Address 1	Street Address 2
800 S. Douglas Road	12th Floor
City	State/Province/Country	ZIP/PostalCode
Coral Gables	FLORIDA	33134

Relationship: Executive Officer X Director Promoter

Clarification of Response (if Necessary):

4. Industry Group

Agriculture

Banking & Financial Services

Commercial Banking

Insurance

Investing

Investment Banking

Pooled Investment Fund

Is the issuer registered as
an investment company under
the Investment Company
Act of 1940?

Yes No

Other Banking & Financial Services

Business Services

Energy

Coal Mining

Electric Utilities

Energy Conservation

Environmental Services

Oil & Gas

Other Energy

	Health Care
	Biotechnology
	Health Insurance
	Hospitals & Physicians
	Pharmaceuticals
	Other Health Care
	Manufacturing
	Real Estate
	Commercial
	Construction
	REITS & Finance
	Residential
	Other Real Estate

Retailing

Restaurants

Technology

Computers

Telecommunications

Other Technology

Travel

Airlines & Airports

Lodging & Conventions

Tourism & Travel Services

Other Travel

X

Other

5. Issuer Size

Revenue Range		OR	Aggregate Net Asset Value Range
	No Revenues			No Aggregate Net Asset Value
	$1 - $1,000,000			$1 - $5,000,000
	$1,000,001 - $5,000,000			$5,000,001 - $25,000,000
	$5,000,001 - $25,000,000			$25,000,001 - $50,000,000
	$25,000,001 - $100,000,000			$50,000,001 - $100,000,000
X	Over $100,000,000			Over $100,000,000
	Decline to Disclose			Decline to Disclose
	Not Applicable			Not Applicable

6. Federal Exemption(s) and Exclusion(s) Claimed (select all that apply)

		Rule 504(b)(1) (not (i), (ii) or (iii))
		Rule 504 (b)(1)(i)
		Rule 504 (b)(1)(ii)
		Rule 504 (b)(1)(iii)
	X	Rule 506(b)
		Rule 506(c)
		Securities Act Section 4(a)(5)

Investment Company Act Section 3(c)

Section 3(c)(1) Section 3(c)(9)

Section 3(c)(2) Section 3(c)(10)

Section 3(c)(3) Section 3(c)(11)

Section 3(c)(4) Section 3(c)(12)

Section 3(c)(5) Section 3(c)(13)

Section 3(c)(6) Section 3(c)(14)

Section 3(c)(7)

7. Type of Filing

	New Notice			Date of First Sale	2021-12-30				First Sale Yet to Occur
X	Amendment

8. Duration of Offering

Does the Issuer intend this offering to last more than one year? Yes X No

9. Type(s) of Securities Offered (select all that apply)

X	Equity		Pooled Investment Fund Interests
	Debt		Tenant-in-Common Securities
	Option, Warrant or Other Right to Acquire Another Security		Mineral Property Securities
	Security to be Acquired Upon Exercise of Option, Warrant or Other Right to Acquire Security		Other (describe)

10. Business Combination Transaction

Is this offering being made in connection with a business combination transaction, such as a merger, acquisition or exchange offer? X Yes No

Clarification of Response (if Necessary):

11. Minimum Investment

Minimum investment accepted from any outside investor $0 USD

12. Sales Compensation

Recipient	Recipient CRD Number X None
(Associated) Broker or Dealer X None	(Associated) Broker or Dealer CRD Number X None
Street Address 1	Street Address 2
City	State/Province/Country	ZIP/Postal Code
State(s) of Solicitation (select all that apply) Check "All States" or check individual States All States	Foreign/non-US

13. Offering and Sales Amounts

Total Offering Amount		USD	or X Indefinite
Total Amount Sold	$194,397,549	USD
Total Remaining to be Sold		USD	or X Indefinite

Clarification of Response (if Necessary):

14. Investors

Select if securities in the offering have been or may be sold to persons who do not qualify as accredited investors, and enter the number of such non-accredited investors who already have invested in the offering.

Regardless of whether securities in the offering have been or may be sold to persons who do not qualify as accredited investors, enter the total number of investors who already have invested in the offering:

102

15. Sales Commissions & Finder's Fees Expenses

Provide separately the amounts of sales commissions and finders fees expenses, if any. If the amount of an expenditure is not known, provide an estimate and check the box next to the amount.

Sales Commissions	$0	USD	Estimate
Finders' Fees	$0	USD	Estimate

Clarification of Response (if Necessary):

16. Use of Proceeds

Provide the amount of the gross proceeds of the offering that has been or is proposed to be used for payments to any of the persons required to be named as executive officers, directors or promoters in response to Item 3 above. If the amount is unknown, provide an estimate and check the box next to the amount.

$0

USD

Estimate

Clarification of Response (if Necessary):

Signature and Submission

Please verify the information you have entered and review the Terms of Submission below before signing and clicking SUBMIT below to file this notice.

Terms of Submission

In submitting this notice, each issuer named above is:

• Notifying the SEC and/or each State in which this notice is filed of the offering of securities described and undertaking to furnish them, upon written request, in the accordance with applicable law, the information furnished to offerees.*

• Irrevocably appointing each of the Secretary of the SEC and, the Securities Administrator or other legally designated officer of the State in which the issuer maintains its principal place of business and any State in which this notice is filed, as its agents for service of process, and agreeing that these persons may accept service on its behalf, of any notice, process or pleading, and further agreeing that such service may be made by registered or certified mail, in any Federal or state action, administrative proceeding, or arbitration brought against the issuer in any place subject to the jurisdiction of the United States, if the action, proceeding or arbitration (a) arises out of any activity in connection with the offering of securities that is the subject of this notice, and (b) is founded, directly or indirectly, upon the provisions of: (i) the Securities Act of 1933, the Securities Exchange Act of 1934, the Trust Indenture Act of 1939, the Investment Company Act of 1940, or the Investment Advisers Act of 1940, or any rule or regulation under any of these statutes, or (ii) the laws of the State in which the issuer maintains its principal place of business or any State in which this notice is filed.

• Certifying that, if the issuer is claiming a Regulation D exemption for the offering, the issuer is not disqualified from relying on Rule 504 or Rule 506 for one of the reasons stated in Rule 504(b)(3) or Rule 506(d).

Each Issuer identified above has read this notice, knows the contents to be true, and has duly caused this notice to be signed on its behalf by the undersigned duly authorized person.

For signature, type in the signer's name or other letters or characters adopted or authorized as the signer's signature.

Issuer	Signature	Name of Signer	Title	Date
MASTEC INC	/s/ Alberto de Cardenas	Alberto de Cardenas	Executive Vice President, General Counsel and Secretary	2025-10-08

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.

* This undertaking does not affect any limits Section 102(a) of the National Securities Markets Improvement Act of 1996 ("NSMIA") [Pub. L. No. 104-290, 110 Stat. 3416 (Oct. 11, 1996)] imposes on the ability of States to require information. As a result, if the securities that are the subject of this Form D are "covered securities" for purposes of NSMIA, whether in all instances or due to the nature of the offering that is the subject of this Form D, States cannot routinely require offering materials under this undertaking or otherwise and can require offering materials only to the extent NSMIA permits them to do so under NSMIA's preservation of their anti-fraud authority.

FAQ

What amount has MasTec (MTZ) sold in this Form D/A?

The filing reports $194,397,549 has been sold.

Which exemption is MasTec (MTZ) relying on for this offering?

The issuer claims the federal exemption under Rule 506(b).

How many investors participated in the offering to date?

The Form D/A lists a total of 102 investors.

Were any sales commissions or finders' fees paid in this offering?

The filing reports $0 paid in sales commissions and $0 in finders' fees.

Is the offering still open or closed?

The offering is marked Indefinite, and the issuer intends it to last more than one year.

When was the first sale reported for this offering?

The date of first sale is reported as 2021-12-30.

Who signed the Form D/A for MasTec (MTZ)?

The notice is signed by Alberto de Cardenas, Executive Vice President, General Counsel and Secretary, on 2025-10-08.