Donald A. McCunniff insider trades: Martin Marietta Materials (MLM) stock sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Donald reports to the SEC
Open-market buys and sales
8 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Mar 5, 2025 | MLM | ↓ Sell | 1,332 | $475.00 | $633K | Direct | Mar 6, 2025 (1d) |
| May 6, 2019 | MLM | ↓ Sell | 3,183 | $220.19 | $701K | Direct | May 7, 2019 (1d) |
| Feb 28, 2019 | MLM | ↓ Sell | 2,223 | $189.78 | $422K | Direct | Feb 28, 2019 (0d) |
| Nov 9, 2018 | MLM | ↓ Sell | 1,476 | $185.50 | $274K | Direct | Nov 13, 2018 (4d) |
| Aug 22, 2018 | MLM | ↓ Sell | 2,250 | $204.33 | $460K | Direct | Aug 24, 2018 (2d) |
| Jun 13, 2018 | MLM | ↓ Sell | 4,226 | $230.72 | $975K | Direct | Jun 13, 2018 (0d) |
| May 4, 2017 | MLM | ↓ Sell | 1,391 | $240.17 | $334K | Direct | May 4, 2017 (0d) |
| Dec 9, 2016 | MLM | ↓ Sell | 1,503 | $228.98 | $344K | Direct | Dec 12, 2016 (3d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
About Donald A. McCunniff's insider trades
Donald A. McCunniff is EVP and CHRO at Martin Marietta Materials (MLM). Since Dec 9, 2016, Donald has reported no open-market purchases and 8 sales worth $4.1M on SEC Form 4. There have been no open-market trades in the last 12 months.
Their filings also include shares withheld for taxes (23 filings), grants and awards (18 filings), option exercises (4 filings), shares returned to the company (1 filing). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every MLM insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.