T-Mobile US, Inc. (TMUS) Insider Trading
Over the last 3 months, TMUS insiders made 1 open-market buy and 3 sales, a net sale of -$1.1M (SEC Form 4). Over the last 6 months, 1454 institutions increased and 1359 reduced their position (13F).
Insider Activity
Sentiment
32/100
Buys (3m)
1
Sells (3m)
3
Net (3m)
-$1.1M
Insiders buyingFirst buy in 2 quarters
Insider trades by month Buys Sells
Oct
Nov
Dec
Feb
Mar
May
Context3-month price -17.4%Institutions mixed (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| May 26, 2026 | Freier Jonofficer: Chief Operating Officer | Sell | 4,799 | $190.00 |
| May 4, 2026 | Katz Michael J.officer: Chief Bus. and Prod. Officer | Sell | 5,000 | $195.81 |
| May 4, 2026 | Almeida Andreofficer: Chief Broadband, Ent. & Emerg | Buy | 5,097 | $196.18 |
| May 4, 2026 | Drobac Daniel Jamesofficer: VP & Chief Accounting Officer | Tax | 37 | $196.06 |
| Mar 13, 2026 | Nelson Mark Wolfeofficer: Chief Legal Officer & GC | Grant | 86 | $211.58 |
| Mar 12, 2026 | Datar Srikant M.director | Sell | 1,000 | $218.25 |
| Mar 6, 2026 | Datar Srikant M.director | Sell | 3,291 | $221.10 |
| Feb 26, 2026 | Drobac Daniel Jamesofficer: VP & Chief Accounting Officer | Tax | 389 | $218.66 |
| Feb 25, 2026 | SIEVERT G MICHAELdirector | Sell | 1,089 | $221.85 |
| Feb 25, 2026 | Nelson Mark Wolfeofficer: Chief Legal Officer & GC | Sell | 2,329 | $222.38 |
| Feb 25, 2026 | SIEVERT G MICHAELdirector | Sell | 13,911 | $220.07 |
| Feb 23, 2026 | SIEVERT G MICHAELdirector | Sell | 80,000 | $214.94 |
| Feb 19, 2026 | Osvaldik Peterofficer: Chief Financial Officer | Sell | 27,000 | $214.86 |
| Feb 18, 2026 | Gopalan Srinidirector, officer: President and CEO | Grant | 60,031 | — |
| Feb 18, 2026 | Osvaldik Peterofficer: Chief Financial Officer | Grant | 12,287 | — |
| Feb 18, 2026 | Nelson Mark Wolfeofficer: Chief Legal Officer & GC | Sell | 6,274 | $219.69 |
| Feb 18, 2026 | Nelson Mark Wolfeofficer: Chief Legal Officer & GC | Sell | 10,240 | $220.80 |
| Feb 18, 2026 | SAW JOHNofficer: Chief Technology Officer | Grant | 7,831 | — |
| Feb 18, 2026 | Osvaldik Peterofficer: Chief Financial Officer | Tax | 8,075 | $219.50 |
| Feb 18, 2026 | Freier Jonofficer: Chief Operating Officer | Grant | 8,067 | — |
| Feb 18, 2026 | Freier Jonofficer: Chief Operating Officer | Tax | 6,167 | $219.50 |
| Feb 18, 2026 | Nelson Mark Wolfeofficer: Chief Legal Officer & GC | Grant | 12,287 | — |
| Feb 18, 2026 | Freier Jonofficer: Chief Operating Officer | Grant | 23,491 | — |
| Feb 18, 2026 | Drobac Daniel Jamesofficer: VP & Chief Accounting Officer | Grant | 3,837 | — |
| Feb 18, 2026 | Katz Michael J.officer: Chief Bus. and Prod. Officer | Tax | 3,571 | $219.50 |
| Feb 18, 2026 | SAW JOHNofficer: Chief Technology Officer | Tax | 2,840 | $219.50 |
| Feb 18, 2026 | King Deeanneofficer: Chief People Officer | Grant | 9,421 | — |
| Feb 18, 2026 | Almeida Andreofficer: Chief Broadband, Ent. & Emerg | Grant | 13,654 | — |
| Feb 18, 2026 | King Deeanneofficer: Chief People Officer | Tax | 3,108 | $219.50 |
| Feb 18, 2026 | Gopalan Srinidirector, officer: President and CEO | Tax | 2,705 | $219.50 |
Source: TMUS SEC Form 4 filings, latest May 26, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their TMUS positions over the last 6 months (SEC Form 13F).
Increased
1454
New positions
342
Reduced
1359
Sold out
330
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| VANGUARD GROUP INC | Increased | 42.8M | Jan 29, 2026 |
| BLACKROCK, INC. | Increased | 39.1M | May 13, 2026 |
| BLACKROCK, INC. | Reduced | 39.1M | Feb 12, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 29.7M | May 15, 2026 |
| SOFTBANK GROUP CORP. | Reduced | 28.5M | Feb 17, 2026 |
| PRICE T ROWE ASSOCIATES INC /MD/ | Increased | 28.5M | May 15, 2026 |
| PRICE T ROWE ASSOCIATES INC /MD/ | Increased | 27.8M | Feb 17, 2026 |
| STATE STREET CORP | Increased | 25.3M | Feb 13, 2026 |
| STATE STREET CORP | Reduced | 23.7M | May 15, 2026 |
| WELLINGTON MANAGEMENT GROUP LLP | Increased | 17.2M | May 15, 2026 |
| WELLINGTON MANAGEMENT GROUP LLP | Increased | 16.6M | Feb 17, 2026 |
| FMR LLC | Increased | 15.7M | Feb 17, 2026 |
| CAPITAL INTERNATIONAL INVESTORS | Increased | 14.8M | Feb 11, 2026 |
| MORGAN STANLEY | Increased | 14.4M | May 15, 2026 |
| MORGAN STANLEY | Reduced | 12.6M | Feb 13, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.