April McClain Delaney, a Maryland Democrat in her first term, reported a pair of trades in MLM (Martin Marietta Materials) that together carry an estimated midpoint value of $383,000. The transactions, disclosed this week, show a buy of up to $15,000 on August 19 and a sell of between $250,000 and $500,000 on August 25.
The sell is the larger of the two by a wide margin. Even at the low end of the range, it is more than 16 times the size of the buy. The filing covers a six-day window, a period in which the stock traded near the bottom of its 52-week range of $491.62 to $710.97. MLM closed at $495.99 on the day of the filing.
McClain Delaney sits on the House Science, Space, and Technology Committee and the House Agriculture Committee, where she is a member of the subcommittee on Commodity Markets, Digital Assets, and Rural Development. Her committee assignments do not include direct oversight of transportation or infrastructure spending, but MLM is a major supplier of aggregates, cement, and ready-mixed concrete, and its stock is often read as a proxy for construction activity. The company has a market cap of $35.2 billion.
The trades bring her career total to 486 transactions since taking office. That volume puts her among the more active traders in Congress, though the bulk of her activity has been in smaller amounts. This filing is her largest single disclosure to date.
She is not alone in trading MLM. Fifteen other lawmakers have reported positions in the stock, according to our database. That group includes members on committees with direct jurisdiction over transportation and infrastructure, which makes the stock a common holding among those who track federal construction dollars.
The Stock Act requires members of Congress to disclose stock trades within 45 days of execution. The filing for these trades was made on time, and no extension was requested. The law is designed to let the public see whether lawmakers are trading on information they gain through their official duties, but a disclosure alone is not evidence of wrongdoing.
The timing of the sell is notable because it came just six days after the buy, and the stock had fallen roughly 8% from its August peak. Whether McClain Delaney was reacting to a short-term dip or a longer-term view is not clear from the filing, and we do not speculate on motive.
For context, MLM has underperformed the broader market over the past year. The stock is down about 17% from its 52-week high, while the S&P 500 has gained roughly 12% in the same period. Analysts who cover the stock point to softer demand in residential construction and a slower-than-expected ramp in federal infrastructure projects as headwinds.
McClain Delaney's office did not respond to a request for comment. The filing, which was made public this week, is part of the routine disclosure cycle for members of Congress. You can see the latest congressional trades in our database, updated daily.
The disclosed trades
Every MLM line item from April McClain Delaney's periodic transaction reports, as filed:
| Trade date | Type | Amount (disclosed range) | Filed | Days to disclosure |
|---|---|---|---|---|
| Aug 19, 2026 | Buy | $1K–$15K | Sep 9, 2026 | 21 |
| Aug 25, 2026 | Sell | $250K–$500K | Sep 9, 2026 | 15 |