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TransDigm Group stock timeline
A year of the price with every insider trade, planned sale, earnings report and material 8-K marked
252 sessions−5.8% to $1,197.01
TransDigm Group (TDG) stock fell 6% over the last 252 sessions, to $1,197.01. On the way it reported 4 quarters, its insiders filed no open-market trades (10b5-1 plan sales aside) and 2 Form 144 notices of planned sales, and the company filed 4 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 |
|---|---|---|---|---|---|
| Sep 29, 2026 | 8-K | Material definitive agreement | −0.8% (−0.7% vs SPY) | −1.5% (−2.7% vs SPY) | +1.9% (+1.3% vs SPY) |
| Sep 15, 2026 | Form 144 | Form 144: Joel Reiss plans to sell $8.9M | −2.4% (−1.9% vs SPY) | −0.1% (−2.0% vs SPY) | +0.1% (−2.4% vs SPY) |
| Aug 7, 2026 | Form 144 | Form 144: The Fortuna Trust U/T/A DTD 06/01/2018 plans to sell $47.6M | −3.0% (−3.6% vs SPY) | −1.3% (−2.5% vs SPY) | −8.2% (−8.5% vs SPY) |
| Aug 4, 2026 | Earnings | Earnings: beat the EPS estimate by 5.7% | −0.8% (−2.6% vs SPY) | −5.0% (−7.0% vs SPY) | −10.6% (−11.2% vs SPY) |
| Jul 24, 2026 | 8-K | Directors and officers: departures, appointments, pay | +1.9% (+1.8% vs SPY) | +2.9% (+2.5% vs SPY) | −1.1% (−4.8% vs SPY) |
| May 5, 2026 | Earnings | Earnings: beat the EPS estimate by 1.5% | +3.6% (+2.8% vs SPY) | +4.2% (+1.3% vs SPY) | +5.2% (+0.3% vs SPY) |
| Apr 17, 2026 | 8-K | Material definitive agreement | +0.7% (+0.9% vs SPY) | −9.8% (−10.3% vs SPY) | −6.8% (−10.8% vs SPY) |
| Feb 13, 2026 | 8-K | Material definitive agreement | +1.2% (+1.0% vs SPY) | +0.7% (+0.6% vs SPY) | −4.3% (−2.7% vs SPY) |
| Feb 3, 2026 | Earnings | Earnings: beat the EPS estimate by 2.3% | −9.8% (−8.9% vs SPY) | −9.9% (−9.7% vs SPY) | −8.8% (−7.2% vs SPY) |
| Nov 12, 2025 | Earnings | Earnings: beat the EPS estimate by 7.6% | +1.1% (+1.0% vs SPY) | +4.3% (+7.7% vs SPY) | +1.8% (+0.9% 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% |
| 5.02 Directors and officers: departures, appointments, pay | 39,174 | −0.1% | 48% | +0.7% | ±1.4% |
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 → TransDigm Group: 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.