---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-23-233451"
form_type: "8-K"
ticker: "TMUS"
cik: "0001283699"
company_name: "T-Mobile US, Inc."
filed_at: "2023-09-12T23:59:59+00:00"
generated_at: "2026-06-10T19:59:44.745133+00:00"
event_type: "other_material"
sentiment: "positive"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# T-Mobile acquires 600 MHz spectrum from Comcast for $1.2B-$3.3B; closing expected H1 2028

## Summary
- Purchase price ranges from $1.2B to $3.3B depending on optional licenses retained by Comcast.
- Non-removable licenses cover ~39M pops including New York, Orlando, Kansas City.
- Optional sale licenses cover ~110M pops including Chicago, San Francisco, Boston, Miami.
- Transaction subject to HSR and FCC approval; transfer filings expected H1 2027, closing H1 2028.
- Licenses acquired without network, but T-Mobile holds exclusive leasing arrangement for them.

## SEC filing metadata
- accession: 0001193125-23-233451
- form_type: 8-K
- ticker: TMUS
- cik: 0001283699
- company_name: T-Mobile US, Inc.
- filed_at: 2023-09-12T23:59:59+00:00
- event_type: other_material
- sentiment: positive
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 1.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1283699/000119312523233451/0001193125-23-233451-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1283699/000119312523233451/d551522d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-23-233451
- JSON: https://secwatch.observer/filing/0001193125-23-233451.json
- Plain text: https://secwatch.observer/filing/0001193125-23-233451.txt

## Key facts
- Material Agreements
  T-Mobile US, Inc. entered into License Purchase Agreement with Comcast Corporation and its affiliate Comcast OTR1, LLC valued at total cash consideration of between $1.2 billion and $3.3 billion (effective 2023-09-12).
  - Action: entry
  - Counterparty: Comcast Corporation and its affiliate Comcast OTR1, LLC
  - Value: total cash consideration of between $1.2 billion and $3.3 billion
  - Effective: 2023-09-12
  source text: On September 12, 2023, T-Mobile US, Inc. (the “Company”), its direct, wholly-owned subsidiary T-Mobile USA, Inc. (“T-Mobile USA”), and its affiliate T-Mobile License LLC (together with T-Mobile USA, “T-Mobile”), entered into a License Purchase Agreement (the “License Purchase Agreement”) with Comcast Corporation and its affiliate Comcast OTR1, LLC (together with Comcast Corporation, “Comcast”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/1283699/000119312523233451/0001193125-23-233451-index.htm

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