Public ownership evidence

MasTec, Inc. (MTZ) Ownership Disclosures

Read MTZ insider transactions, institutional 13F filings and Congressional disclosures with report dates, public availability and original receipts.

As of 2026-10-10T12:08:28.848Z

Separate the three disclosure sources

Step 1 of 3

Recent Form 4 activity

MasTec, Inc.: source evidence dated 2026-10-10T12:08:28.848Z.

Available
2026-08-19
Trade date
2026-08-14
Reporting owners
Miranda Manuel Benito
Code
A
Shares
152
Reported value
Not reported
What you should see

The displayed owner or issuer and source fields identify the receipt to verify; keep reporting and availability dates separate.

Step 2 of 3

Is this an insider transaction, 13F holding, or Congressional event?

Each source has different dates and units. Raw ticker-matched receipts, including amendments, are not deduplicated current ownership totals.

SEC 0000015615-26-000116
What you should see

Follow the source receipt or manager/member profile. Avoid combining transaction value and 13F position value into an ownership percentage.

Step 3 of 3

Read MTZ fundamentals

Follow the source receipt or manager/member profile. Avoid combining transaction value and 13F position value into an ownership percentage.

Read MTZ fundamentals
What you should see

Keep reporting dates and units beside the answer, and inspect its original citations.

Recent Form 4 activity

See the complete recent form 4 activity
2026-08-192026-08-14Miranda Manuel BenitoA152Not reported
2026-08-192026-08-14Palomarez Javier AlbertoA139Not reported
2026-08-192026-08-14Csiszar Ernst NA152Not reported
2026-08-192026-08-14Campbell C RobertA139Not reported
2026-08-192026-08-14Spiro AlexA139Not reported
2026-08-192026-08-14Dwyer Robert JA139Not reported
2026-08-192026-08-14JOHNSON JULIA LA139Not reported
2026-08-192026-08-14Parker Ava LA177Not reported

90-day public availability window, up to 50 records.

Recent institutional filing receipts

These are raw ticker-matched positions in recent 13F receipts, including amendments. They are not deduplicated current ownership totals. Open the manager profile to inspect its effective filing book.

Cornerstone Financial Management LLC2026-06-302026-08-2913$5,409None
Cornerstone Financial Management LLC2026-03-312026-08-299$2,896None
Cornerstone Financial Management LLC2025-12-312026-08-299$1,956None
OPTIMIZE FINANCIAL INC.2026-06-302026-08-281,210$503,433None
Advisors Asset Management, Inc.2021-12-312026-08-2851,172$4,722,152None
Advisors Asset Management, Inc.2022-12-312026-08-2826,368$2,249,981None
Advisors Asset Management, Inc.2020-06-302026-08-2839,135$1,755,987None
Advisors Asset Management, Inc.2022-06-302026-08-2843,220$3,097,000None
Advisors Asset Management, Inc.2021-09-302026-08-2846,083$3,976,000None
Corient Private Wealth LP2026-06-302026-08-2813,241$5,509,121None
Corient Private Wealth LP2026-06-302026-08-28854$355,315None
Principia Wealth Advisory, LLC2026-06-302026-08-274$1,664None
Principia Wealth Advisory, LLC2026-03-312026-08-271$322None
Advisors Asset Management, Inc.2024-03-312026-08-2729,069$2,710,684None
Advisors Asset Management, Inc.2025-03-312026-08-2739,800$4,645,058None
Advisors Asset Management, Inc.2022-09-302026-08-2744,374$2,818,000None
Advisors Asset Management, Inc.2020-12-312026-08-2735,580$2,426,000None
Advisors Asset Management, Inc.2022-03-312026-08-2751,111$4,451,768None
Advisors Asset Management, Inc.2023-06-302026-08-2724,023$2,833,993None
Advisors Asset Management, Inc.2023-09-302026-08-2724,616$1,771,614None
Advisors Asset Management, Inc.2023-03-312026-08-2729,351$2,771,908None
Advisors Asset Management, Inc.2021-03-312026-08-2737,470$3,510,939None
Advisors Asset Management, Inc.2021-06-302026-08-2745,091$4,784,000None
Advisors Asset Management, Inc.2020-09-302026-08-2737,513$1,583,049None
Advisors Asset Management, Inc.2025-09-302026-08-2742,602$9,066,132None
Advisors Asset Management, Inc.2023-12-312026-08-2725,730$1,948,276None
Advisors Asset Management, Inc.2019-12-312026-08-2658,858$3,776,329None
VIRGINIA RETIREMENT SYSTEMS ET Al2026-03-312026-08-267,100$2,284,354None
Advisors Asset Management, Inc.2025-06-302026-08-2540,268$6,862,875None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-2589,451$37,216,983None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-2537,216,983$89,451,000None
Advisors Asset Management, Inc.2024-09-302026-08-2233,761$4,155,979None
Advisors Asset Management, Inc.2024-06-302026-08-2232,386$3,464,978None
Advisors Asset Management, Inc.2024-12-312026-08-2237,511$5,106,748None
Advisors Asset Management, Inc.2025-12-312026-08-2242,250$9,183,883None
Advisors Asset Management, Inc.2020-03-312026-08-2246,340$1,516,708None
Assenagon Asset Management S.A.2026-06-302026-08-22129,199$53,754,536None
Harvest Fund Management Co., Ltd2026-06-302026-08-214,451$1,851,000None
Kingsview Wealth Management, LLC2026-06-302026-08-201,135$472,228None
MERCER GLOBAL ADVISORS INC /ADV2026-06-302026-08-2018,015$7,495,321None
Beacon Pointe Advisors, LLC2026-06-302026-08-19633$263,366None
Advisors Asset Management, Inc.2019-03-312026-08-1936,857$1,772,822None
Advisors Asset Management, Inc.2019-09-302026-08-1953,088$3,447,004None
Advisors Asset Management, Inc.2019-06-302026-08-1947,121$2,428,145None
Ensign Peak Advisors, Inc2026-03-312026-08-193,233$1,040,185None
Ensign Peak Advisors, Inc2025-12-312026-08-193,233$702,757None
Ensign Peak Advisors, Inc2025-09-302026-08-1911,183$2,379,854None
Fulcrum Asset Management LLP2026-06-302026-08-195,800$2,488,722None
Glenview Trust Co2026-06-302026-08-191,212$504,264None
Papamarkou Wellner Asset Management inc.2026-06-302026-08-18700$291,242None

90-day public filing window, up to 50 source positions.

Cornerstone Financial Management LLC ↗Cornerstone Financial Management LLC ↗Cornerstone Financial Management LLC ↗OPTIMIZE FINANCIAL INC. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Corient Private Wealth LP ↗

Recent Congressional disclosures

Thomas H. Kean, Jr.2026-09-132026-08-21purchase$1,001 - $15,000

Bounded public source preview, up to 25 disclosed events.

How to read the disclosure dates

The tables report different things: insider transactions, institutional positions and Congressional transaction ranges. Read each table with its source dates and units. They cannot be added into a combined ownership percentage.

  1. Company insiders

    SEC Form 4 purchases, sales and awards report transactions and their public filing availability.

  2. Institutional managers

    13F reports disclose delayed quarter-end positions. They are not a record of trades between quarters.

  3. Congressional filers

    Periodic transaction reports disclose transaction dates and amount brackets. Public filing dates determine what researchers could know.

Institutional source directory ↗Congressional source directory ↗

Read the transaction codes

Awards use transaction code A, purchases P and sales S. An acquisition from an award is not the same as an open-market purchase. Joint filers may share a transaction. Use original receipts and availability dates to interpret the events.

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