---
schema_version: "secwatch.filing_event.v1"
accession: "0000821130-25-000035"
form_type: "8-K"
ticker: "AD"
cik: "0000821130"
company_name: "ARRAY DIGITAL INFRASTRUCTURE, INC."
filed_at: "2025-06-20T23:59:59+00:00"
generated_at: "2026-05-19T02:15:30.313929+00:00"
event_type: "m_and_a"
sentiment: "neutral"
materiality_score: 0.8
calibrated_materiality_score: 0.8
confidence: "high"
source: SEC EDGAR
---

# US Cellular enters supplemental indentures modifying note covenants contingent on T-Mobile deal close

## Summary
- Amendments to 6.700% 2033, 6.250% 2069, 5.500% 2070 (March & June) notes.
- Covenant deletions include limitations on secured debt, sale-leaseback, and merger restrictions.
- Redemption notice periods shortened; defeasance conditions relaxed for notes called for redemption.
- Amendments become operative only upon closing of T-Mobile acquisition of US Cellular's wireless ops.
- If settlement of exchange offers doesn't occur within 5 business days post-close, amendments void.

## SEC filing metadata
- accession: 0000821130-25-000035
- form_type: 8-K
- ticker: AD
- cik: 0000821130
- company_name: ARRAY DIGITAL INFRASTRUCTURE, INC.
- filed_at: 2025-06-20T23:59:59+00:00
- event_type: m_and_a
- sentiment: neutral
- materiality_score: 0.8
- calibrated_materiality_score: 0.8
- confidence: high
- sec_items: 1.01, 3.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/821130/000082113025000035/0000821130-25-000035-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/821130/000082113025000035/usm-20250617.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000821130-25-000035
- JSON: https://secwatch.observer/filing/0000821130-25-000035.json
- Plain text: https://secwatch.observer/filing/0000821130-25-000035.txt

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