---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-215340"
form_type: "8-K"
ticker: "TMUS"
cik: "0001283699"
company_name: "T-Mobile US, Inc."
filed_at: "2025-09-24T23:59:59+00:00"
generated_at: "2026-05-17T05:45:19.937589+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.3
calibrated_materiality_score: 0.3
confidence: "high"
source: SEC EDGAR
---

# T-Mobile appoints Abdurazak Mudesir to Board effective immediately

## Summary
- Mudesir is Deutsche Telekom CTO and was designated under the Stockholders' Agreement.
- Election effective September 19, 2025, filling a board seat.
- Appointment reflects Deutsche Telekom's controlling stake as per agreement.

## SEC filing metadata
- accession: 0001193125-25-215340
- form_type: 8-K
- ticker: TMUS
- cik: 0001283699
- company_name: T-Mobile US, Inc.
- filed_at: 2025-09-24T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.3
- calibrated_materiality_score: 0.3
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1283699/000119312525215340/0001193125-25-215340-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1283699/000119312525215340/d27999d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-215340
- JSON: https://secwatch.observer/filing/0001193125-25-215340.json
- Plain text: https://secwatch.observer/filing/0001193125-25-215340.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.