G Michael Sievert Insider Trading Activity
G Michael Sievert has been net-selling over the last 12 months with 0 purchases and 7 sales across 1 company.
TMUS is the most-traded position with 7 trades. The largest single transaction was a sale of TMUS for $17.2M on Feb 19, 2026.
Performance Scorecard
Forward stock performance after each transaction by G Michael Sievert. Buy returns measure price movement after open-market purchases; sell-avoided measures the loss avoided after open-market sales. Success rate counts trades where the insider's direction was right.
| PERIOD | AVG BUY RETURN | AVG SELL AVOIDED | SUCCESS RATE | TRADES |
|---|---|---|---|---|
| 30 days | — | +5.6% | 100% | 7 |
| 90 days | — | +9.5% | 71% | 7 |
| 120 days | — | +12.6% | 100% | 4 |
Performance based on stock price movement after each transaction date. Past results do not predict future returns. Not financial advice.
Price & Trades
Pro: Trade MarkersTMUS · T-Mobile US, Inc.
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| DATE | TICKER | TYPE | SHARES | PRICE | VALUE | ROLE |
|---|---|---|---|---|---|---|
| Feb 24, 2026 | TMUS | Sell | 1,089 | $221.85 | $242K | Director |
| Feb 23, 2026 | TMUS | Sell | 13,911 | $220.07 | $3.1M | Director |
| Feb 19, 2026 | TMUS | Sell | 80,000 | $214.94 | $17.2M | Director |
| Nov 18, 2025 | TMUS | Sell | 22,500 | $214.25 | $4.8M | Director |
| Nov 17, 2025 | TMUS | Sell | 22,500 | $216.97 | $4.9M | Director |
| Aug 19, 2025 | TMUS | Sell | 22,500 | $257.17 | $5.8M | CEO |
| Aug 18, 2025 | TMUS | Sell | 22,500 | $255.58 | $5.8M | CEO |
Top Companies Traded
| TICKER | COMPANY | TRADES | TOTAL VOLUME |
|---|---|---|---|
| TMUS | T-Mobile US, Inc. | 7 | $41.7M |
Other insiders at T-Mobile US, Inc.
3 other tracked filers at TMUS.