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T-Mobile US stock timeline
A year of the price with every insider trade, planned sale, earnings report and material 8-K marked
252 sessions−17.7% to $162.01
T-Mobile US (TMUS) stock fell 18% over the last 252 sessions, to $162.01. On the way it reported 4 quarters, its insiders filed 1 open-market trade and 1 Form 144 notice of planned sales, and the company filed 6 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 |
|---|---|---|---|---|---|
| Oct 28, 2026 | 8-K | Directors and officers: departures, appointments, pay | +0.8% (+0.5% vs SPY) | +5.0% (+7.0% vs SPY) | — |
| Oct 28, 2026 | Earnings | Earnings: beat the EPS estimate by 10.6% | +0.8% (+0.5% vs SPY) | +5.0% (+7.0% vs SPY) | — |
| Sep 10, 2026 | Form 144 | Form 144: Daniel James Drobac plans to sell $138K | −0.1% (+0.5% vs SPY) | −0.6% (+0.5% vs SPY) | −3.5% (−5.3% vs SPY) |
| Sep 10, 2026 | Insider sale | Drobac Daniel James sold $138K | −0.1% (+0.5% vs SPY) | −0.6% (+0.5% vs SPY) | −3.5% (−5.3% vs SPY) |
| Sep 3, 2026 | 8-K | Directors and officers: departures, appointments, pay | −3.5% (−3.1% vs SPY) | −3.1% (−1.9% vs SPY) | −13.3% (−13.8% vs SPY) |
| Jul 23, 2026 | Earnings | Earnings: beat the EPS estimate by 14.9% | −11.4% (−10.1% vs SPY) | −5.1% (−2.6% vs SPY) | −5.2% (−7.2% vs SPY) |
| Jul 7, 2026 | 8-K | Directors and officers: departures, appointments, pay | −2.5% (−2.2% vs SPY) | +1.3% (+0.7% vs SPY) | −6.3% (−9.2% vs SPY) |
| Apr 28, 2026 | Earnings | Earnings: beat the EPS estimate by 15.1% | +2.2% (+2.6% vs SPY) | +6.2% (+5.8% vs SPY) | +4.3% (−0.5% vs SPY) |
| Mar 27, 2026 | 8-K | Directors and officers: departures, appointments, pay | +1.5% (+1.8% vs SPY) | −6.0% (−9.8% vs SPY) | −12.1% (−23.7% vs SPY) |
| Feb 11, 2026 | Earnings | Earnings: missed the EPS estimate by -8.9% | +5.0% (+5.0% vs SPY) | +6.7% (+7.6% vs SPY) | +7.7% (+11.6% vs SPY) |
| Jan 6, 2026 | 8-K | Material definitive agreement | −0.7% (−0.3% vs SPY) | −4.6% (−4.9% vs SPY) | +1.6% (+3.7% vs SPY) |
| Dec 9, 2025 | 8-K | Directors and officers: departures, appointments, pay | −1.5% (−1.4% vs SPY) | −4.1% (−3.7% vs SPY) | −3.2% (−4.4% vs SPY) |
Insiders’ record here
In the year on the chart, T-Mobile US' insiders reported 0 open-market buys ($0) and 1 sale ($138K).
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 |
|---|---|---|---|---|---|
| 5.02 Directors and officers: departures, appointments, pay | 39,174 | −0.1% | 48% | +0.7% | ±1.4% |
| 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 →
Report card: every quarter against the estimate → T-Mobile US: 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.