Transactions
10
Insider / MASTEC INC
Csiszar Ernst N
Director at MASTEC INC
- Company
- MASTEC INC
- Ticker
- MTZ
- First filing on record
- November 18, 2025
- Latest trade on record
- August 14, 2026
- SEC filings
- EDGAR ↗
Csiszar Ernst N, Director at MASTEC INC, has disclosed 10 transactions in MTZ since November 18, 2025: 0 purchases (0 open-market buys) and 6 sales, worth about $4.4M at the reported prices. The latest was filed August 18, 2026, 4 days after the trade; 2 filings were late against the 2-business-day Form 4 deadline.
Open-market buys
0
Sales
6
Avg. disclosure lag
3.8d
Trading in charts
Trade timeline
When does this person trade, how big, and in which direction? Every trade in the last 12 months.
Bought (above the line)Sold (below the line)Other transaction
In the last 12 months Csiszar Ernst N made no purchases and 6 sales worth $4.4M, plus 4 other transactions. Dot size is the dollar amount.
Portfolio mix
Which stocks does this person trade most? Tile size is dollars traded, all time on record.
Csiszar Ernst N has traded 1 stock on record; the largest by dollars is MTZ.
Reporting lag
Does this person report on time? One bar per filing against the Form 4 deadline.
On timeLate
1 of 6 filings on record were reported after the Form 4 deadline (two business days, counted here as 4 calendar days).
What kind of transactions
Most Form 4 rows are pay arriving or tax being withheld, not a decision to buy or sell. Only code P is an open-market purchase and code S an open-market sale. What each code means: Form 4 transaction codes.
| Code | Meaning | Rows | Shares | Value |
|---|---|---|---|---|
| A | Grant or award | 4 | 659 | — |
| F | Shares withheld for tax | 4 | 146 | $40K |
| S | Open-market sale | 2 | 13,000 | $4.4M |
| Year | Rows | Bought | Sold |
|---|---|---|---|
| 2026 | 8 | 0 | 5 · $4.4M |
| 2025 | 2 | 0 | 1 · $9,995 |
Transactions
| Security | Side | Trade date | Disclosed | Lag | Shares | Price | Value | Flags | Source | Share |
|---|---|---|---|---|---|---|---|---|---|---|
| MTZ | Sell F | August 14, 2026 | August 18, 2026 | 4d | 34 | $298 | $10K | Form 4 ↗ | ||
| MTZ | Other A | August 14, 2026 | August 18, 2026 | 4d | 152 | — | — | Form 4 ↗ | ||
| MTZ | Sell S | June 3, 2026 | June 5, 2026 | 2d | 6,500 | $371 | $2.4M | Form 4 ↗ | ||
| MTZ | Sell F | May 15, 2026 | May 19, 2026 | 4d | 23 | $435 | $10,000 | Form 4 ↗ | ||
| MTZ | Other A | May 15, 2026 | May 19, 2026 | 4d | 104 | — | — | Form 4 ↗ | ||
| MTZ | Sell S | March 3, 2026 | March 5, 2026 | 2d | 6,500 | $300 | $2.0M | Form 4 ↗ | ||
| MTZ | Sell F | February 13, 2026 | February 18, 2026 | 5d | 37 | $270 | $9,973 | late | Form 4 ↗ | |
| MTZ | Other A | February 13, 2026 | February 18, 2026 | 5d | 168 | — | — | late | Form 4 ↗ | |
| MTZ | Sell F | November 14, 2025 | November 18, 2025 | 4d | 52 | $192 | $9,995 | Form 4 ↗ | ||
| MTZ | Other A | November 14, 2025 | November 18, 2025 | 4d | 235 | — | — | Form 4 ↗ |
Filings
| Filed | Form | Accession | Rows | Status | Source |
|---|---|---|---|---|---|
| August 18, 2026 | Form 4 | 0000015615-26-000111 | 2 | published | EDGAR ↗ |
| June 5, 2026 | Form 4 | 0000015615-26-000067 | 1 | published | EDGAR ↗ |
| May 19, 2026 | Form 4 | 0000015615-26-000065 | 2 | published | EDGAR ↗ |
| March 5, 2026 | Form 4 | 0000015615-26-000022 | 1 | published | EDGAR ↗ |
| February 18, 2026 | Form 4 | 0000015615-26-000008 | 2 | published | EDGAR ↗ |
| November 18, 2025 | Form 4 | 0000015615-25-000140 | 2 | published | EDGAR ↗ |
Other insiders at MASTEC INC
- Palomarez Javier Alberto Director 9 rows
- Dwyer Robert J Director 8 rows
- Parker Ava L Director 8 rows
- Campbell C Robert Director 6 rows
- JOHNSON JULIA L Director 5 rows
- MAS JORGE Director 4 rows
- MAS JOSE RAMON CEO 4 rows
- Love Timothy Michael CAO 3 rows
- Apple Robert E COO 2 rows
- de Cardenas Alberto EVP, General Counsel 2 rows
Everyone on file, with contracts and lobbying under the company's name: MASTEC INC.
Guides for this page
- What is SEC Form 4? Who files: officers, directors and owners of more than 10% of a class of the company's shares.
- Form 4 transaction codes P = purchase. S = sale. These are the two market trades.
- Insider buying vs insider selling Selling outweighs buying by a wide margin in normal times.
- What disclosure data cannot tell you Filings are late by design: up to 45 days for Congress, two business days for insiders.
Sources and method
| Source | Filings | Rows | First filed | Newest filed | Read the originals |
|---|---|---|---|---|---|
| SEC EDGAR, Form 4 | 6 | 10 | November 18, 2025 | August 18, 2026 | Form 4 list on EDGAR |
Site built October 22, 2026. Every row in the tables above links to its own filing. To quote a figure, use the Cite button at the top of the page; see how to cite and reuse.
Every row comes from the reporting owner's Form 4 as filed with the SEC (EDGAR ownership XML), read daily. "Value" is shares × the reported price; code P is an open-market purchase, S a sale, M an option exercise, A a grant. The lag is the filing date minus the trade date; Form 4 is due within two business days. Amendments (4/A) are not merged. Details on the methodology page; report an error on corrections.
Not investment advice. Figures are public disclosures shown as filed; they may lag the trade and may be amended later. No recommendation is made or implied.