Who
G. Michael Sievert
Director
Company insider
Files Form 4 as: Director, Alaska Air Group; Director, Starbucks; President and CEO, T-Mobile US; Chief Commercial Officer, Clearwire Corp /DE; Director, Switch & Data Facilities Company.
In numbers
- Trades disclosed
- 160
- Buys
- 0
- Sells
- 67
- Bought
- $0
- Sold
- $217.6M
- Companies
- 5
- Companies where not an officer
- 3
- First trade
- 26 Feb 2008
- Last trade
- 1 Jun 2026
- Last filed
- 3 Jun 2026
Companies traded
Activity over time
1 Nov 2024 – 1 Oct 2026
Buys above the line, sells below, each month.
Every trade
| Traded | Company | What | Amount | |
|---|---|---|---|---|
| 1 Jun 2026filed 3 Jun 2026 | ALK Alaska Air GroupAirlines & Air Freight | SEC FORM 4 Code A | $190K4,258 at $44.52 | filing |
| 1 Jun 2026filed 3 Jun 2026 | ALK Alaska Air GroupAirlines & Air Freight | SEC FORM 4 Code A | $190K4,258 at $44.52 | filing |
| 25 Mar 2026filed 27 Mar 2026 | SBUX StarbucksRestaurants | SEC FORM 4 Code A | —3,667 at $0.00 | filing |
| 25 Mar 2026filed 27 Mar 2026 | SBUX StarbucksRestaurants | SEC FORM 4 Code A | —3,667 at $0.00 | filing |
| 24 Feb 2026filed 25 Feb 2026 | TMUS T-Mobile USTelecom Carriers | SEC FORM 4 Sold | $242K1,089 at $221.85 | filing |
| 24 Feb 2026filed 25 Feb 2026 | TMUS T-Mobile USTelecom Carriers | SEC FORM 4 Sold | $242K1,089 at $221.85 | filing |
| 23 Feb 2026filed 25 Feb 2026 | TMUS T-Mobile USTelecom Carriers | SEC FORM 4 Sold | $3.1M13,911 at $220.07 | filing |
| 23 Feb 2026filed 25 Feb 2026 | TMUS T-Mobile USTelecom Carriers | SEC FORM 4 Sold | $3.1M13,911 at $220.07 | filing |
| 19 Feb 2026filed 23 Feb 2026 | TMUS T-Mobile USTelecom Carriers | SEC FORM 4 Sold | $17.2M80,000 at $214.94 | filing |
| 19 Feb 2026filed 23 Feb 2026 | TMUS T-Mobile USTelecom Carriers | SEC FORM 4 Sold | $17.2M80,000 at $214.94 | filing |
| 3 Dec 2025filed 4 Dec 2025 | TMUS T-Mobile USTelecom Carriers | SEC FORM 4 Code G | —65,500 at $0.00 | filing |
| 18 Nov 2025filed 19 Nov 2025 | TMUS T-Mobile USTelecom Carriers | SEC FORM 4 Sold | $4.8M22,500 at $214.25 | filing |
| 17 Nov 2025filed 19 Nov 2025 | TMUS T-Mobile USTelecom Carriers | SEC FORM 4 Sold | $4.9M22,500 at $216.97 | filing |
| 10 Nov 2025filed 12 Nov 2025 | TMUS T-Mobile USTelecom Carriers | SEC FORM 4 Code G | —43,318 at $0.00 | filing |
| 9 Nov 2025filed 12 Nov 2025 | TMUS T-Mobile USTelecom Carriers | SEC FORM 4 Code F | $9.1M44,140.08 at $207.00 | filing |
| 9 Nov 2025filed 12 Nov 2025 | TMUS T-Mobile USTelecom Carriers | SEC FORM 4 Code A | —135,915 at $0.00 | filing |
| 9 Nov 2025filed 12 Nov 2025 | TMUS T-Mobile USTelecom Carriers | SEC FORM 4 Code F | $11.1M53,482.55 at $207.00 | filing |
| 19 Aug 2025filed 20 Aug 2025 | TMUS T-Mobile USTelecom Carriers | SEC FORM 4 Sold | $5.8M22,500 at $257.17 | filing |
| 18 Aug 2025filed 20 Aug 2025 | TMUS T-Mobile USTelecom Carriers | SEC FORM 4 Sold | $5.8M22,500 at $255.58 | filing |
| 20 May 2025filed 21 May 2025 | TMUS T-Mobile USTelecom Carriers | SEC FORM 4 Sold | $5.4M22,500 at $240.99 | filing |
News
T-Mobile US, Inc. $TMUS Stock: TD Waterhouse Canada Inc. Reduces HoldingsTMUS · dailypolitical.com · 20 Oct 2026T-Mobile US (NASDAQ:TMUS) Upgraded to "Outperform" at Raymond James FinancialTMUS · dailypolitical.com · 13 Oct 2026T-Mobile US (TMUS) Falls to a 52-Week Low at $148.58TMUS · 247wallst.com · 10 Oct 2026
0 headlines in the last 90 days name G. Michael Sievert; 3 articles from the last 14 days about the 1 company they traded most, at most three about any one of them.