TMUS T-Mobile US, Inc.

NASDAQ
$172.16

T-Mobile US, Inc. (TMUS) Insider Activity

What the officers, directors and large holders did with their own shares. Only open-market purchases and sales count toward the totals — grants, option exercises and shares withheld for tax are compensation mechanics, not decisions, and they're listed separately below.

30D 90D 6M 1Y
Insider signal In line Selling ran in line with TMUS's own trailing one-year pace, with 9% of sale value under a prearranged plan.
Cluster activity 0 buyers in the last 30 days 0 buyers in the last 90 days 1 seller in the last 90 days
Insiders buying
1
1 transaction
Insiders selling
9
18 transactions
Purchases
$1.0M
5,097 shares
Sales
$163.7M
754,775 shares
Net activity
-$162.7M
purchases less sales

How much of that selling was preplanned? 9% planned / 91% discretionary

10b5-1 plan sales $14.8M 7 transactions · 68,926 shares
Discretionary sales $148.8M 11 transactions · 685,849 shares

Largest single sale: $119.7M.

Where they traded

Buy Sell Dot area is proportional to transaction value.

Last open-market purchase: May 1, 2026 , by Almeida Andre .

Recent open-market activity

Date Insider Role Action Shares Price Value Held after
Drobac Daniel James VP & Chief Accounting Officer Sell 10b5-1 113 $154.18 $17.4K 37,738 −0.3% of holding
Drobac Daniel James VP & Chief Accounting Officer Sell 772 $178.33 $137.7K 35,118 −2.2% of holding
Freier Jon Chief Operating Officer Sell 10b5-1 4,799 $190.00 $911.8K 217,168 −2.2% of holding
Almeida Andre Chief Broadband, Ent. & Emerg Buy 5,097 $196.18 $1.0M 44,850
Katz Michael J. Chief Bus. and Prod. Officer Sell 5,000 $195.81 $979.1K 181,930 −2.7% of holding
Datar Srikant M. Director Sell 1,000 $218.25 $218.3K 10,843 −8.4% of holding
Datar Srikant M. Director Sell 3,291 $221.10 $727.6K 1,038 −76% of holding
Nelson Mark Wolfe Chief Legal Officer & GC Sell 2,329 $222.38 $518.0K 65,677 −3.4% of holding
SIEVERT G MICHAEL Director Sell 1,089 $221.85 $241.6K 125,696 −0.9% of holding
SIEVERT G MICHAEL Director Sell 13,911 $220.07 $3.1M 126,785 −9.9% of holding
SIEVERT G MICHAEL Director Sell 80,000 $214.94 $17.2M 140,696 −36.2% of holding
Osvaldik Peter Chief Financial Officer Sell 27,000 $214.86 $5.8M 51,573 −34.4% of holding
Nelson Mark Wolfe Chief Legal Officer & GC Sell 10b5-1 6,274 $219.69 $1.4M 68,006 −8.4% of holding
Nelson Mark Wolfe Chief Legal Officer & GC Sell 10b5-1 10,240 $220.80 $2.3M 74,280 −12.1% of holding
CLAURE RAUL MARCELO Director Sell 550,000 $217.57 $119.7M 891,204 −38.2% of holding
Long Letitia A Director Sell 1,457 $210.32 $306.4K 5,438 −21.1% of holding
SIEVERT G MICHAEL Director Sell 10b5-1 22,500 $214.25 $4.8M 286,196 −7.3% of holding
SIEVERT G MICHAEL Director Sell 10b5-1 22,500 $216.97 $4.9M 308,696 −6.8% of holding
Katz Michael J. Pres, Mkting Stgy & Prods Sell 10b5-1 2,500 $215.91 $539.8K 156,203 −1.6% of holding

Form 4s are due within two business days of a transaction, so this is close to real time — unlike the quarterly 13F data on the Institutional tab. A single large sale often reflects a prearranged 10b5-1 plan rather than a fresh view, so read a pattern of sales rather than any one of them.