Updated Jul 16, 2026 · Last SEC filing 2026-06-18
T-Mobile US, Inc. (TMUS) has filed 12 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-06-18. 4 Form 8-K material event filings were reported by TMUS in the last 90 days. 2 Form 144 notices of proposed sale were filed for TMUS stock. InsiderAlpha tracks every TMUS SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SIC classification | Radiotelephone Communications (SIC 4812) |
|---|---|
| SEC CIK | 0001283699 |
| Form 4 filings (90d) | 12 |
|---|---|
| Form 8-K filings (90d) | 4 |
| Form 144 notices (90d) | 2 |
| Latest Form 4 filing | 2026-06-18 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Taylor Teresa | Director | A — Grant or award | 1.4K | $0.00 | — | SEC | |
| Dannenfeldt Thomas | Director | A — Grant or award | 1.4K | $0.00 | — | SEC | |
| Long Letitia A | Director | A — Grant or award | 272 | $0.00 | — | SEC | |
| Datar Srikant M. | Director | A — Grant or award | 1.4K | $0.00 | — | SEC | |
| Long Letitia A | Director | A — Grant or award | 1.4K | $0.00 | — | SEC | |
| CLAURE RAUL MARCELO | Director | A — Grant or award | 1.4K | $0.00 | — | SEC | |
| KAVANAUGH JAMES J | Director | A — Grant or award | 1.4K | $0.00 | — | SEC | |
| Nelson Mark Wolfe | Chief Legal Officer & GC | A — Grant or award | 98 | $187.02 | $18K | SEC | |
| Dannenfeldt Thomas | Director | F — Tax withholding / forfeiture | 311 | $178.10 | $55K | SEC | |
| Freier Jon | Chief Operating Officer | S — Open-market sale | 4.8K | $190.00 | $912K | SEC | |
| Almeida Andre | Chief Broadband, Ent. & Emerg | P — Open-market purchase | 5.1K | $196.18 | $1.00M | SEC | |
| Drobac Daniel James | VP & Chief Accounting Officer | F — Tax withholding / forfeiture | 37 | $196.06 | $7K | SEC | |
| Katz Michael J. | Chief Bus. and Prod. Officer | S — Open-market sale | 5.0K | $195.81 | $979K | SEC | |
| Nelson Mark Wolfe | Chief Legal Officer & GC | A — Grant or award | 86 | $211.58 | $18K | SEC | |
| Datar Srikant M. | Director | S — Open-market sale | 1.0K | $218.25 | $218K | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for T-Mobile US, Inc. (TMUS). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| Dannenfeldt Thomas | 2 | $55K |
| Long Letitia A | 2 | — |
| Drobac Daniel James | 1 | $7K |
| Nelson Mark Wolfe | 1 | $18K |
| Almeida Andre | 1 | $1.00M |
Form 144 must be filed before insiders sell restricted or control stock above SEC thresholds. A cluster of Form 144 notices often precedes a wave of insider distribution.
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in TMUS insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
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