Filing Flows › Companies › Simpson Manufacturing › Timeline
Simpson Manufacturing stock timeline
A year of the price with every insider trade, planned sale, earnings report and material 8-K marked
252 sessions+17.6% to $196.89
Simpson Manufacturing (SSD) stock rose 18% over the last 252 sessions, to $196.89. On the way it reported 0 quarters, its insiders filed 4 open-market trades and 2 Form 144 notices of planned sales, and the company filed 1 material 8-K. 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 |
|---|---|---|---|---|---|
| Sep 10, 2026 | Form 144 | Form 144: Michael Olosky plans to sell $605K | −2.4% (−1.8% vs SPY) | −2.6% (−1.5% vs SPY) | −2.5% (−4.3% vs SPY) |
| Sep 10, 2026 | Insider sale | Olosky Michael sold $605K | −2.4% (−1.8% vs SPY) | −2.6% (−1.5% vs SPY) | −2.5% (−4.3% vs SPY) |
| Aug 4, 2026 | Form 144 | Form 144: James S Andrasick plans to sell $156K | +2.2% (+0.4% vs SPY) | +1.6% (−0.4% vs SPY) | −8.3% (−8.8% vs SPY) |
| Aug 4, 2026 | Insider sale | Andrasick James S sold $156K | +2.2% (+0.4% vs SPY) | +1.6% (−0.4% vs SPY) | −8.3% (−8.8% vs SPY) |
| Dec 22, 2025 | 8-K | Material definitive agreement | −1.3% (−1.7% vs SPY) | −1.5% (−1.8% vs SPY) | +8.7% (+8.0% vs SPY) |
| Dec 12, 2025 | Insider sale | Donaldson Philip E sold $399K | −1.0% (+0.1% vs SPY) | −1.9% (−0.1% vs SPY) | +6.4% (+5.4% vs SPY) |
| Nov 11, 2025 | Insider sale | Andrasick James S sold $102K | −0.6% (−0.8% vs SPY) | −6.4% (−4.0% vs SPY) | −0.4% (−1.3% vs SPY) |
Insiders’ record here
In the year on the chart, Simpson Manufacturing's insiders reported 0 open-market buys ($0) and 4 sales ($1.3M). Of the 3 old enough to score, 0 were followed by the stock doing what the trade implied over the next 63 sessions (beating SPY after a buy, lagging it after a sale); the median excess return after a buy was — and after a sale +6.5%.
Across the whole universe (19,782 scored trades), insider buys beat the market 46% of the time and sales were followed by a lagging stock 61% of the time; buys of $1M or more 39%. Every pattern →
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% |
Across every company in the move-odds universe, measured from the close before the filing. Every 8-K item ranked →
Simpson Manufacturing: 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.