// company-profile
Martin Marietta Materials Inc Insider Trading
MLMEvery SEC Form 4 insider trading filing for Martin Marietta Materials Inc (MLM) — open-market buys and sells by directors and officers, option exercises, and cluster activity, updated as each filing is reported to the SEC.
curl "https://api.form4api.com/v1/transactions?ticker=MLM" -H "X-Api-Key: YOUR_API_KEY"// activity-summary
Recent insider activity is bearish. Over the last 30 days, insiders net sold $200K across 1 transaction.
// 90-day insight
Over the last 90 days, Martin Marietta Materials Inc insiders bought $110K (12 transactions) and sold $200K (1 transaction).
- Most active insider: WAJSGRAS DAVID C with 2 transactions totaling $40K.
- Largest single sale: $200K by Petro Michael J on Aug 3, 2026.
Activity skews bullish — buys outpace sales.
Institutional Ownership
Top 13F-HR holders of Martin Marietta Materials Inc as of 2026-06-30
Data source: quarterly 13F-HR filings — institutional holders report positions within 45 days of quarter end. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Aug 3, 2026 | Petro Michael J | MLM | Tax Withholding | 368 | $542.27 | $200K |
| May 29, 2026 | LYONS MARTIN J | MLM | Award | 61 | $581.64 | $35K |
| May 29, 2026 | WAJSGRAS DAVID C | MLM | Award | 69 | $581.64 | $40K |
| May 29, 2026 | Pike Thomas | MLM | Award | 59 | $581.64 | $34K |
| May 14, 2026 | DELLY GAYLA J | MLM | Award | 313 | $0.00 | $0K |
45 more transactions hidden
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