Mark Wolfe Nelson - 15 Feb 2026 Form 4 Insider Report for T-Mobile US, Inc. (TMUS)

Signature
/s/ Frederick Williams, Attorney-in-Fact
Issuer symbol
TMUS
Transactions as of
15 Feb 2026
Net transactions value
-$6,098,903
Form type
4
Filing time
18 Feb 2026, 17:32:56 UTC
Previous filing
15 Dec 2025
Next filing
25 Feb 2026

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Nelson Mark Wolfe Chief Legal Officer & GC C/O T-MOBILE US, INC., 12920 SE 38TH STREET, BELLEVUE /s/ Frederick Williams, Attorney-in-Fact 18 Feb 2026 0001886089

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction TMUS Common Stock Award $0 +19,576 +31% $0.000000 83,438 15 Feb 2026 Direct F1
transaction TMUS Common Stock Tax liability $1,525,233 -6,949 -8.3% $219.50 76,490 15 Feb 2026 Direct F2
transaction TMUS Common Stock Award $0 +12,287 +16% $0.000000 88,777 15 Feb 2026 Direct F3
transaction TMUS Common Stock Tax liability $934,343 -4,257 -4.8% $219.50 84,520 15 Feb 2026 Direct F4
transaction TMUS Common Stock Sale $2,260,992 -10,240 -12% $220.80 74,280 17 Feb 2026 Direct F5
transaction TMUS Common Stock Sale $1,378,335 -6,274 -8.4% $219.69 68,006 18 Feb 2026 Direct F5
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Explanation of Responses:

Id Content
F1 Represents restricted stock units granted under the issuer's 2023 Incentive Award Plan, (the "Plan"); one-third of the units vest on each of February 15, 2027, February 15, 2028 and February 15, 2029, subject to the terms of the Plan and related award agreement.
F2 Represents shares withheld for payment of taxes on vesting of restricted stock units; not an open market transaction.
F3 Represents performance-based restricted stock units earned under the issuer's 2015 Sprint Omnibus Incentive Plan, that vested on February 15, 2026 based on the Company's relative total shareholder return during the three-year period ending February 15, 2026.
F4 Represents shares withheld for payment of taxes on vesting of performance-based restricted stock units; not an open market transaction.
F5 This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 24, 2025.