G. Michael Sievert is CEO & President at T-Mobile US, Inc. (TMUS). They have made 27 open-market trades across 2 companies since 2010, most recently 2026-06-01.
CIK 0001182438
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 27 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| TMUS | 125,695 | $20.0M |
| SBUX | 10,878 | $1.1M |
| ALK | 4,258 | $150K |
| CLWR | 416,190 | — |
| SDXC | 22,500 | — |
| Total | $21.2M |
Shares reported on the most recent Form 4, priced at the 2026-06-03 close. 2 holdings could not be priced and are excluded from the total.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| TMUS | SELL | 2026-02-23 | 2026-02-25 | $220.20 | $3.3M | -0.3% | -3.4% | -12.4% |
| TMUS | SELL | 2026-02-19 | 2026-02-23 | $214.94 | $17.2M | -0.3% | -4.4% | -13.6% |
| TMUS | SELL · 10b5-1 | 2025-11-17 | 2025-11-19 | $215.61 | $9.7M | -0.6% | -6.9% | +3.9% |
| TMUS | SELL · 10b5-1 | 2025-08-18 | 2025-08-20 | $256.38 | $11.5M | -0.8% | -7.7% | -17.4% |
| TMUS | SELL | 2025-05-19 | 2025-05-21 | $242.70 | $10.9M | +1.0% | -8.3% | +6.9% |
| TMUS | SELL | 2025-02-25 | 2025-02-27 | $266.83 | $12.0M | -3.6% | +0.2% | -9.3% |
| TMUS | SELL | 2024-11-14 | 2024-11-18 | $239.22 | $9.6M | +4.2% | -6.9% | +11.0% |
| TMUS | SELL · 10b5-1 | 2024-11-11 | 2024-11-13 | $237.78 | $9.5M | -0.4% | -3.8% | +7.3% |
| TMUS | SELL · 10b5-1 | 2024-08-12 | 2024-08-14 | $194.82 | $7.8M | +2.1% | +3.3% | +21.7% |
| TMUS | SELL · 10b5-1 | 2024-05-13 | 2024-05-15 | $163.02 | $6.5M | +2.7% | +8.0% | +19.9% |
| TMUS | SELL · 10b5-1 | 2024-02-27 | 2024-02-29 | $163.75 | $6.5M | +0.6% | -0.0% | +3.8% |
| TMUS | SELL | 2024-02-15 | 2024-02-20 | $161.05 | $6.4M | +0.3% | -1.2% | +0.7% |
| TMUS | SELL | 2023-11-17 | 2023-11-21 | $147.55 | $28.5M | +2.5% | +4.0% | +8.7% |
| TMUS | SELL · 10b5-1 | 2023-11-10 | 2023-11-14 | $147.10 | $5.9M | +1.4% | +6.9% | +10.2% |
| TMUS | SELL | 2023-08-10 | 2023-08-14 | $138.20 | $5.5M | -3.9% | +2.0% | +6.1% |
| TMUS | SELL | 2023-05-11 | 2023-05-15 | $143.25 | $5.7M | -6.1% | -11.4% | -3.5% |
| TMUS | SELL | 2023-02-27 | 2023-03-01 | $143.89 | $5.8M | -0.8% | +2.8% | -4.1% |
| TMUS | SELL | 2022-11-10 | 2022-11-14 | $151.25 | $9.1M | +2.3% | -3.5% | -0.7% |
| TMUS | SELL | 2022-08-10 | 2022-08-12 | $146.54 | $8.8M | -0.5% | -0.6% | +3.1% |
| TMUS | SELL | 2022-05-11 | 2022-05-13 | $122.66 | $4.9M | +4.0% | -1.4% | +13.7% |
| TMUS | SELL | 2022-02-25 | 2022-03-01 | $123.21 | $4.9M | +0.5% | +3.6% | +7.6% |
| TMUS | SELL | 2021-11-10 | 2021-11-12 | $119.43 | $4.8M | -3.0% | -2.5% | +6.1% |
| TMUS | SELL | 2021-08-10 | 2021-08-12 | $142.97 | $5.7M | -1.2% | -9.9% | -17.2% |
| TMUS | SELL | 2021-05-10 | 2021-05-11 | $136.72 | $10.9M | +0.1% | +7.7% | +5.2% |
| TMUS | SELL | 2021-02-25 | 2021-02-26 | $121.67 | $4.9M | +5.9% | +2.6% | +17.5% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.