Company profile

T-Mobile US, Inc. Insider Trading

TMUS

Every SEC Form 4 insider trading filing for T-Mobile US, Inc. (TMUS) since April 2023 — open-market buys and sells by directors and officers, option exercises, and cluster activity, updated as each filing is reported to the SEC. Why 2023?

Exchange
Nasdaq
Sector
Radiotelephone Communications
CIK
0001283699
Filings
278
Insiders
27
Last filing
2026-08-15
SEC EDGAR ↗Yahoo Finance ↗Finviz ↗Stock Analysis ↗

Activity summary

Mixed insider activity over the last 30 days: 1 purchase and 1 sale (2 transactions total).

Three year balance

Buy and sell value by quarter, Q4 23 to Q3 26. T-Mobile US, Inc. insiders were net sellers in every quarter shown.

Q4 23Q1 24Q2 24Q3 24Q4 24Q1 25Q2 25Q3 25Q4 25Q1 26Q2 26Q3 26

Bars below the rule are sales, above are purchases. Largest quarter on the chart is $2.6B.

90 day insight

Over the last 90 days, T-Mobile US, Inc. insiders bought $18K (9 transactions) and sold $71K (2 transactions).

  • Most active insider: Dannenfeldt Thomas with 2 transactions totaling $55K.
  • Largest single sale: $55K by Dannenfeldt Thomas on Jun 6, 2026.

Activity skews bullish — buys outpace sales.

Insider Transactions

Sourced from SEC EDGAR Form 4 filings. Updated hourly.

DateInsiderCompanyTypeSharesPriceValue
Aug 15, 2026Drobac Daniel JamesTMUS
Tax Withholding
87.677$182.61$16K
Aug 1, 2026Sambar ChristopherTMUS
Award
40,966——
Jun 16, 2026Long Letitia ATMUS
Award
1,384——
Jun 16, 2026Dannenfeldt ThomasTMUS
Award
1,384——
Jun 16, 2026Long Letitia ATMUS
Award
272——

45 more transactions hidden

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Query this yourself

The same rows, over the API.

curl "https://api.form4api.com/v1/transactions?ticker=TMUS" \
  -H "X-Api-Key: $KEY"
Get a key

Top insiders

By total value filed.

Sievert G MichaelPresident and CEO3 filings−$20.5M
Osvaldik PeterEVP & CFO3 filings−$8.6M
Nelson Mark WolfeChief Legal Officer & GC7 filings−$6.6M
Katz Michael J.President, MIX3 filings−$3.3M
Freier JonPresident, Consumer Group3 filings−$3.0M

Institutional Ownership

Top 13F-HR holders of T-Mobile US, Inc. as of 2026-06-30

↓ decreasing
Total reported AUM
$19.58B
QoQ change
-76.7%
Reporting period
2026-06-30
#1
State Street Corp
CIK 0000093751
$4.20B
25.0M shares
#2
BlackRock, Inc.
CIK 0002012383
$2.25B
13.4M shares
#3
BlackRock, Inc.
CIK 0002012383
$1.70B
10.1M shares

Data source: quarterly 13F-HR filings — institutional holders report positions within 45 days of quarter end. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →