Transactions
8
Insider / MARTIN MARIETTA MATERIALS INC
Petro Michael J
SVP and CFO at MARTIN MARIETTA MATERIALS INC
- Ticker
- MLM
- First filing on record
- February 19, 2026
- Latest trade on record
- September 1, 2026
- SEC filings
- EDGAR ↗
Petro Michael J, SVP and CFO at MARTIN MARIETTA MATERIALS INC, has disclosed 8 transactions in MLM since February 19, 2026: 0 purchases (0 open-market buys) and 4 sales, worth about $915K at the reported prices. The latest was filed September 2, 2026, 1 day after the trade.
Open-market buys
0
Sales
4
Avg. disclosure lag
1.9d
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 Petro Michael J made no purchases and 4 sales worth $915K, 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.
Petro Michael J has traded 1 stock on record; the largest by dollars is MLM.
Reporting lag
Does this person report on time? One bar per filing against the Form 4 deadline.
On timeLate
0 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 | 14,946 | — |
| F | Shares withheld for tax | 4 | 1,431 | $915K |
| Year | Rows | Bought | Sold |
|---|---|---|---|
| 2026 | 8 | 0 | 4 · $915K |
Transactions
| Security | Side | Trade date | Disclosed | Lag | Shares | Price | Value | Flags | Source | Share |
|---|---|---|---|---|---|---|---|---|---|---|
| MLM | Other A | September 1, 2026 | September 2, 2026 | 1d | 9,331 | — | — | Form 4 ↗ | ||
| MLM | Sell F | August 3, 2026 | August 4, 2026 | 1d | 368 | $542 | $200K | Form 4 ↗ | ||
| MLM | Other A | March 1, 2026 | March 3, 2026 | 2d | 2,960 | — | — | Form 4 ↗ | ||
| MLM | Sell F | February 24, 2026 | February 25, 2026 | 1d | 94 | $697 | $66K | Form 4 ↗ | ||
| MLM | Sell F | February 23, 2026 | February 25, 2026 | 2d | 211 | $684 | $144K | Form 4 ↗ | ||
| MLM | Other A | February 20, 2026 | February 24, 2026 | 4d | 931 | — | — | Form 4 ↗ | ||
| MLM | Sell F | February 17, 2026 | February 19, 2026 | 2d | 758 | $667 | $505K | Form 4 ↗ | ||
| MLM | Other A | February 17, 2026 | February 19, 2026 | 2d | 1,724 | — | — | Form 4 ↗ |
Filings
| Filed | Form | Accession | Rows | Status | Source |
|---|---|---|---|---|---|
| September 2, 2026 | Form 4 | 0000916076-26-000088 | 1 | published | EDGAR ↗ |
| August 4, 2026 | Form 4 | 0000916076-26-000077 | 1 | published | EDGAR ↗ |
| March 3, 2026 | Form 4 | 0000916076-26-000044 | 1 | published | EDGAR ↗ |
| February 25, 2026 | Form 4 | 0000916076-26-000028 | 2 | published | EDGAR ↗ |
| February 24, 2026 | Form 4 | 0000916076-26-000018 | 1 | published | EDGAR ↗ |
| February 19, 2026 | Form 4 | 0000916076-26-000008 | 2 | published | EDGAR ↗ |
Other insiders at MARTIN MARIETTA MATERIALS INC
- Nye C Howard Director 15 rows
- Foxx Anthony R Director 10 rows
- Flynn Jason Paul SVP and CIO 7 rows
- LYONS MARTIN J Director 7 rows
- Cardin Robert J SVP, Controller & CAO 6 rows
- DELLY GAYLA J Director 5 rows
- Pike Thomas Director 5 rows
- WAJSGRAS DAVID C Director 5 rows
- McCunniff Donald A. EVP and CHRO 4 rows
- BAR ROSELYN R Executive Vice President 3 rows
Everyone on file, with contracts and lobbying under the company's name: MARTIN MARIETTA MATERIALS 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 | 8 | February 19, 2026 | September 2, 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.