TMUS insider buying and SEC filings, explained
T-Mobile US, Inc. · CIK 1283699
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Insider activity in the last 12 months
Bought
$3.0M
Insiders who bought
2
Sold (not marked 10b5-1)
$148.7M
Planned sales (10b5-1)
$14.9M
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Nov 2, 2026 | Planned (10b5-1) | Daniel James Drobac (VP & Chief Accounting Officer) sold 113 shares at $154.18 ($17K), marked as a 10b5-1 plan trade. Holdings down <1% to 37,738 shares. | SEC filing Filed Nov 3, 2026, 5:44 PM ET |
| Sep 10, 2026 | Planned (10b5-1) | Daniel James Drobac (VP & Chief Accounting Officer) sold 772 shares at $178.33 ($138K), marked as a 10b5-1 plan trade. Holdings down 2% to 35,118 shares. | SEC filing Filed Sep 14, 2026 |
| May 21, 2026 | Planned (10b5-1) | Jon Freier (President / COO) sold 4,799 shares at $190.00 ($912K), marked as a 10b5-1 plan trade. Holdings down 2% to 217,168 shares. | SEC filing Filed May 26, 2026 |
| May 1, 2026 | Purchase (code P) | Andre Almeida (Chief Broadband, Ent. & Emerg) bought 5,097 shares at about $196.18 ($1.0M), reported as a purchase (code P). Holdings up 13% to 44,850 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 4, 2026 |
| May 1, 2026 | Sale | Michael J. Katz (Chief Bus. and Prod. Officer) sold 5,000 shares at about $195.81 ($979K). Holdings down 3% to 181,930 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 4, 2026 |
| Mar 10, 2026 | Sale | Srikant M. Datar (Director) sold 1,000 shares indirectly (by entity) at $218.25 ($218K). Holdings by entity down 8% to 10,843 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 12, 2026 |
| Mar 4, 2026 | Sale | Srikant M. Datar (Director) sold 3,291 shares at about $221.10 ($728K). Holdings down 76% to 1,038 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 6, 2026 |
| Feb 24, 2026 | Sale | Mark Wolfe Nelson (Chief Legal Officer & GC) sold 2,329 shares at about $222.38 ($518K). Holdings down 3% to 65,677 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Feb 25, 2026 |
| Feb 23–24, 2026 | Sale | G. Michael Sievert (Director) sold 15,000 shares between Feb 23 and Feb 24 at about $220.20 ($3.3M). Holdings down 11% to 125,696 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Feb 25, 2026 |
| Feb 19, 2026 | Sale | G. Michael Sievert (Director) sold 80,000 shares at about $214.94 ($17.2M). Holdings down 36% to 140,696 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Feb 23, 2026 |
| Feb 18, 2026 | Sale | Peter Osvaldik (CFO) sold 27,000 shares at about $214.86 ($5.8M). Holdings down 34% to 51,573 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Feb 19, 2026 |
| Feb 17–18, 2026 | Planned (10b5-1) | Mark Wolfe Nelson (Chief Legal Officer & GC) sold 16,514 shares between Feb 17 and Feb 18 at about $220.38 ($3.6M), marked as a 10b5-1 plan trade. Holdings down 20% to 68,006 shares. | SEC filing Filed Feb 18, 2026 |
| Feb 12, 2026 | Sale | Raul Marcelo Claure (Director) sold 550,000 shares indirectly (by entity) at about $217.57 ($119.7M). Holdings by entity down 38% to 891,204 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Feb 17, 2026 |
| Dec 5, 2025 | Sale | Letitia A Long (Director) sold 1,457 shares at about $210.32 ($306K). Holdings down 21% to 5,438 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 9, 2025 |
| Nov 17–18, 2025 | Planned (10b5-1) | G. Michael Sievert (Director) sold 45,000 shares between Nov 17, 2025 and Nov 18, 2025 at about $215.61 ($9.7M), marked as a 10b5-1 plan trade. Holdings down 14% to 286,196 shares. | SEC filing Filed Nov 19, 2025 |
| Nov 17, 2025 | Planned (10b5-1) | Michael J. Katz (Pres, Mkting Stgy & Prods) sold 2,500 shares at $215.91 ($540K), marked as a 10b5-1 plan trade. Holdings down 2% to 156,203 shares. | SEC filing Filed Nov 19, 2025 |
| Nov 6, 2025 | Purchase (code P) | Srini Gopalan (CEO and Director) bought 9,800 shares at about $201.82 ($2.0M), reported as a purchase (code P). Holdings up 12% to 90,258 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 10, 2025 |
36 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
No cluster buys in the last 12 months.
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
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