secwatch.observer — SEC 8-K summary ====================================== Issuer: T-Mobile US, Inc. (TMUS) CIK: 0001283699 Form: 8-K Filed at: 2025-09-04T23:59:59+00:00 Accession: 0001193125-25-195398 Event type: other_material Sentiment: positive Materiality: 0.75 Item codes: 7.01, 9.01 LLM model: deepseek-v4-flash:cloud@v2 T-Mobile raises UScellular synergy to $1.2B (+20%), accelerates integration; sees Q3 impacts, $350M tech charge -------------------------------------------------------------------------------- - UScellular acquisition total annual run-rate cost synergies increased to ~$1.2B (up 20% from ~$1.0B); integration now expected in ~2 years (vs 3-4 originally). - Costs to achieve ~$2.6B, within original range; reinvest portion for competition. - Q3 UScellular: service revenues ~$400M, Core Adj. EBITDA ~$125M; ~$100M costs to achieve, ~$175M D&A. - T-Mobile expects ~$350M in non-cash costs in Q3 from accelerating billing tech transformation. - Underlying postpaid ARPA growth: at least 3.5% FY25 vs FY24; consolidated ARPA impacted ~$1.50 by UScellular, Metronet. Source: EDGAR index: https://www.sec.gov/Archives/edgar/data/1283699/000119312525195398/0001193125-25-195398-index.htm Primary doc: https://www.sec.gov/Archives/edgar/data/1283699/000119312525195398/d907284d8k.htm HTML page: https://secwatch.observer/filing/0001193125-25-195398 License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer