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Martin Marietta Materials stock timeline
A year of the price with every insider trade, planned sale, earnings report and material 8-K marked
252 sessions−14.4% to $518.15
Martin Marietta Materials (MLM) stock fell 14% over the last 252 sessions, to $518.15. On the way it reported 4 quarters, its insiders filed no open-market trades (10b5-1 plan sales aside), and the company filed 12 material 8-Ks. Each is marked on the price and listed with what the stock did next.
Each mark, and what followed
| Date | Kind | What | Next session | 5 sessions | 21 sessions |
|---|---|---|---|---|---|
| Nov 4, 2026 | Earnings | Earnings: missed the EPS estimate by -4.2% | +2.3% (+0.7% vs SPY) | — | — |
| Sep 16, 2026 | 8-K | Material definitive agreement | −0.5% (−1.6% vs SPY) | −1.3% (−3.3% vs SPY) | −1.1% (−3.7% vs SPY) |
| Aug 24, 2026 | 8-K | Material definitive agreement | −0.3% (−0.1% vs SPY) | −0.7% (−1.2% vs SPY) | −6.7% (−8.0% vs SPY) |
| Aug 18, 2026 | 8-K | Material definitive agreement | +2.4% (+2.2% vs SPY) | +1.7% (+1.9% vs SPY) | −5.4% (−4.8% vs SPY) |
| Aug 14, 2026 | 8-K | Material definitive agreement | −1.7% (−1.2% vs SPY) | −2.4% (−1.0% vs SPY) | −7.6% (−5.2% vs SPY) |
| Aug 12, 2026 | 8-K | Material definitive agreement | +0.2% (−0.5% vs SPY) | −1.6% (−1.1% vs SPY) | −6.3% (−5.2% vs SPY) |
| Aug 4, 2026 | 8-K | Directors and officers: departures, appointments, pay | −0.4% (−0.2% vs SPY) | −0.4% (−0.3% vs SPY) | −7.1% (−6.3% vs SPY) |
| Jul 30, 2026 | Earnings | Earnings: beat the EPS estimate by 7.6% | −5.4% (−7.0% vs SPY) | −2.9% (−8.3% vs SPY) | −7.5% (−13.1% vs SPY) |
| Jul 15, 2026 | 8-K | Material definitive agreement | +1.3% (+1.9% vs SPY) | −3.3% (−2.4% vs SPY) | −4.4% (−7.4% vs SPY) |
| Jun 29, 2026 | 8-K | Material definitive agreement | −0.8% (−1.6% vs SPY) | +2.2% (+1.3% vs SPY) | −2.0% (−0.5% vs SPY) |
| May 14, 2026 | 8-K | Directors and officers: departures, appointments, pay | −2.9% (−1.7% vs SPY) | −6.7% (−6.0% vs SPY) | +2.5% (+1.6% vs SPY) |
| Apr 30, 2026 | Earnings | Earnings: beat the EPS estimate by 5.3% | +1.0% (0.0% vs SPY) | +0.4% (−2.7% vs SPY) | −5.2% (−11.3% vs SPY) |
| Apr 27, 2026 | 8-K | Directors and officers: departures, appointments, pay | +0.7% (+1.2% vs SPY) | −1.1% (−1.5% vs SPY) | −6.0% (−10.8% vs SPY) |
| Feb 23, 2026 | 8-K | Completed acquisition or disposition | +1.9% (+1.2% vs SPY) | −2.6% (−3.2% vs SPY) | −17.0% (−12.8% vs SPY) |
| Feb 11, 2026 | Earnings | Earnings: missed the EPS estimate by -7.2% | −6.8% (−6.8% vs SPY) | −6.8% (−5.9% vs SPY) | −18.6% (−14.7% vs SPY) |
| Dec 19, 2025 | 8-K | Material definitive agreement | −0.2% (−0.9% vs SPY) | +0.5% (−0.5% vs SPY) | +2.8% (+1.6% vs SPY) |
What this kind of 8-K usually did
| Item | 8-Ks | Next session, median | Up next session | 21 sessions, median | Typical size |
|---|---|---|---|---|---|
| 1.01 Material definitive agreement | 23,525 | 0.0% | 51% | +1.0% | ±1.4% |
| 2.03 New debt or off-balance-sheet obligation | 13,268 | 0.0% | 50% | +1.2% | ±1.3% |
| 2.01 Completed acquisition or disposition | 2,671 | +0.1% | 52% | +1.2% | ±1.6% |
| 5.02 Directors and officers: departures, appointments, pay | 39,174 | −0.1% | 48% | +0.7% | ±1.4% |
| 1.02 Termination of a material agreement | 2,368 | 0.0% | 51% | +1.1% | ±1.5% |
Across every company in the move-odds universe, measured from the close before the filing. Every 8-K item ranked →
Report card: every quarter against the estimate → Martin Marietta Materials: every quarter → Live insider trades →
Prices are daily closes; filings and trades are as filed with the SEC (Form 4 within two business days of the trade, 8-K within four of the event). Moves after a mark are the stock's close-to-close change and the same for SPY; they describe the record, not what the next one will do. Not investment advice.