🕵️ T-Mobile US, Inc. ($TMUS)
SEC insider & ownership activity, last 12 months · CIK 1283699 · every row links its SEC filing
Over the last 12 months insiders sold $617.6M against $3.0M of open-market buying. Deutsche Telekom Ag sold $453.9M through a 10b5-1 trading plan in 146 lots (Sep–Oct). T-Mobile Global Zwischenholding GmbH trimmed 57.1% → 56.5%; T-Mobile Global Holding GmbH trimmed 57.1% → 56.5%. No red-flag 8-Ks in the window.
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Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
2 buyers, $3.0M (2 lots) · 10 sellers, $617.6M (163 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Deutsche Telekom Ag | 0 | – | 146 | $453.9M | Oct 29, 2025 |
| Claure Raul Marcelo | 0 | – | 1 | $119.7M | Feb 12, 2026 |
| Sievert G. Michael | 0 | – | 5 | $30.2M | Feb 24, 2026 |
| Osvaldik Peter | 0 | – | 1 | $5.8M | Feb 18, 2026 |
| Nelson Mark Wolfe | 0 | – | 3 | $4.2M | Feb 24, 2026 |
| Gopalan Srini | 1 | $2.0M | 0 | – | Nov 6, 2025 |
| Michael J. Katz | 0 | – | 2 | $1.5M | May 1, 2026 |
| Almeida Andre | 1 | $1.0M | 0 | – | May 1, 2026 |
| Srikant M. Datar | 0 | – | 2 | $946K | Mar 10, 2026 |
| Freier Jon | 0 | – | 1 | $912K | May 21, 2026 |
| Letitia A. Long | 0 | – | 1 | $306K | Dec 5, 2025 |
| Drobac Daniel James | 0 | – | 1 | $138K | Sep 10, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| T-Mobile Global Zwischenholding GmbH | 56.5% | 13D | Aug 8, 2025 | filing ↗ | |
| T-Mobile Global Holding GmbH | 56.5% | 13D | Aug 8, 2025 | filing ↗ | |
| Deutsche Telekom Holding B.v. | 56.5% | 13D | Aug 8, 2025 | filing ↗ | |
| Deutsche Telekom Holding B.v. | 53.7% | 13D | Mar 19, 2026 | filing ↗ | |
| T-Mobile Global Holding GmbH | 53.7% | 13D | Mar 19, 2026 | filing ↗ | |
| T-Mobile Global Zwischenholding GmbH | 53.7% | 13D | Mar 19, 2026 | filing ↗ | |
| Deutsche Telekom Ag | 53.7% | 13D | Mar 19, 2026 | filing ↗ | |
| Picton Mahoney Asset Management | 6.5% | 13G | Oct 16, 2025 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Drobac Daniel James | $138K | Sep 10, 2026 | filing ↗ |
| Freier Jon | $912K | May 21, 2026 | filing ↗ |
| Michael J. Katz | $979K | May 1, 2026 | filing ↗ |
| Srikant M. Datar | $218K | Mar 10, 2026 | filing ↗ |
| Srikant M. Datar | $728K | Mar 4, 2026 | filing ↗ |
| Nelson Mark Wolfe | $518K | Feb 24, 2026 | filing ↗ |
| Sievert G. Michael | $242K | Feb 24, 2026 | filing ↗ |
| Sievert G. Michael | $3.1M | Feb 23, 2026 | filing ↗ |
| Sievert G. Michael | $17.2M | Feb 19, 2026 | filing ↗ |
| Osvaldik Peter | $5.8M | Feb 18, 2026 | filing ↗ |
| Nelson Mark Wolfe | $1.4M | Feb 18, 2026 | filing ↗ |
| Nelson Mark Wolfe | $2.3M | Feb 17, 2026 | filing ↗ |
| Claure Mobile LLC | $219.0M | Feb 12, 2026 | filing ↗ |
| Deutsche Telekom Ag | $78.7M | Dec 22, 2025 | filing ↗ |
| Letitia A. Long | $306K | Dec 5, 2025 | filing ↗ |
| Sievert G. Michael | $4.9M | Nov 18, 2025 | filing ↗ |
| Michael J. Katz | $540K | Nov 17, 2025 | filing ↗ |
| Sievert G. Michael | $4.9M | Nov 17, 2025 | filing ↗ |
| Callie R. Field | $5.0M | Nov 11, 2025 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Officer/director changes (5.02) | Sep 1, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Sep 1, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Sep 1, 2026 | filing ↗ |
| Earnings (2.02) | Jul 23, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 23, 2026 | filing ↗ |
| Officer/director changes (5.02) | Jul 2, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Jul 2, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 2, 2026 | filing ↗ |
| Shareholder vote (5.07) | Jun 16, 2026 | filing ↗ |
| Earnings (2.02) | Apr 28, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 28, 2026 | filing ↗ |
| Other events (8.01) | Apr 23, 2026 | filing ↗ |
| Other events (8.01) | Mar 31, 2026 | filing ↗ |
| Officer/director changes (5.02) | Mar 26, 2026 | filing ↗ |
| Other events (8.01) | Feb 19, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 19, 2026 | filing ↗ |
| Earnings (2.02) | Feb 11, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 11, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Feb 11, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 11, 2026 | filing ↗ |
| Other events (8.01) | Jan 12, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jan 12, 2026 | filing ↗ |
| Material agreement (1.01) | Jan 5, 2026 | filing ↗ |
| New financial obligation (2.03) | Jan 5, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jan 5, 2026 | filing ↗ |
| Other events (8.01) | Dec 11, 2025 | filing ↗ |
| Officer/director changes (5.02) | Dec 4, 2025 | filing ↗ |
| Earnings (2.02) | Oct 23, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Oct 23, 2025 | filing ↗ |
| Other events (8.01) | Oct 9, 2025 | filing ↗ |