| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
Director | President and CEO | President & COO +1 more
4 companies
G Michael Sievert is Director at TMUS and has filed Form 4s across 4 companies. G Michael Sievert's net worth is not public. Form 4 filings only show shares in the companies where this person is an insider; those holdings are worth an estimated $25.3M at current prices.
Historically, G Michael Sievert's trades have earned a middling insider score of 52/100 across 46 rated trades. Over a 12-month horizon, 36.6% of those trades were profitable, with an average 12-month return of -14.0%.
The biggest single holding is TMUS (~$21.7M) as Director. The TMUS filings lean toward selling, a net 1,161,443 shares.
G Michael Sievert has 67 Form 4 filings on record from February 2015 to June 2026, across 4 companies: Director at Alaska Air Group (ALK), 2026; Director at Starbucks (SBUX), 2024–2026; Director at T-Mobile US, Inc. 5.500% Senior Notes due March 2070 (TMUSZ), 2026, and 1 more.
The 133 reported transactions were 67 open-market sales, 31 stock awards, 27 tax withholdings and 6 gifts, plus smaller numbers of other types.
Counted by filing, the open-market trades come to no purchases and 35 sales worth about $196.0M.
The largest open-market sale was 80,000 shares of TMUS at an average $214.94 on February 19, 2026, about $17.2M.
7 of the 16 sales since April 2023 were made under a Rule 10b5-1 trading plan; the other 9 were not.
| Date | Ticker | Role | Type | Shares | Price | Value | Chg% | 3M | 12M | SEC |
|---|---|---|---|---|---|---|---|---|---|---|
| Feb 24, 2026 | TMUSZ T-Mobile Us, Inc. 5.500% Senior Notes Due March 2070 | Director | Sell | 15,000 | $220.20 | $3,302,988.42 | -10.7% | -5.1% | - | |
| Feb 19, 2026 | TMUS T-Mobile Us, Inc. | Director | Sell | 80,000 | $214.94 | $17,195,200.00 | -36.2% | -11.7% | - | |
| Nov 18, 2025 | TMUS T-Mobile Us, Inc. | Director | Sell10b5-1 | 45,000 | $215.61 | $9,702,450.00 | -13.6% | +3.1% | - | |
| Aug 19, 2025 | TMUS T-Mobile Us, Inc. | President and CEO | Sell10b5-1 | 45,000 | $256.38 | $11,536,875.00 | -11.8% | -16.4% | -29.4% | |
| May 20, 2025 | TMUS T-Mobile Us, Inc. | President and CEO | Sell | 45,000 | $242.70 | $10,921,275.00 | -10.6% | +5.8% | -23.2% | |
| Feb 26, 2025 | TMUS T-Mobile Us, Inc. | President and CEO | Sell | 45,000 | $266.83 | $12,007,125.00 | -11.4% | -7.7% | -19.1% | |
| Nov 14, 2024 | TMUS T-Mobile Us, Inc. | President and CEO | Sell | 40,000 | $239.22 | $9,568,800.00 | -11.2% | +7.4% | -9.1% | |
| Nov 12, 2024 | TMUS T-Mobile Us, Inc. | President and CEO | Sell10b5-1 | 40,000 | $237.78 | $9,511,000.00 | -10.0% | +7.0% | -11.0% | |
| Aug 13, 2024 | TMUS T-Mobile Us, Inc. | President and CEO | Sell10b5-1 | 40,000 | $194.82 | $7,792,600.00 | -9.1% | +22.0% | +28.4% | |
| May 14, 2024 | TMUS T-Mobile Us, Inc. | President and CEO | Sell10b5-1 | 40,000 | $163.02 | $6,520,800.00 | -8.4% | +20.0% | +44.9% |