---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-21-247744"
form_type: "8-K"
ticker: "HII"
cik: "0001501585"
company_name: "HUNTINGTON INGALLS INDUSTRIES, INC."
filed_at: "2021-08-16T23:59:59+00:00"
generated_at: "2026-06-29T09:55:37.355211+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# HII raises $1B in senior notes to fund Alion acquisition; rates 0.670% and 2.043%

## Summary
- Issued $400M 0.670% senior notes due 2023 and $600M 2.043% senior notes due 2028.
- Net proceeds, together with term loan borrowings, to fund the Alion Science and Technology purchase.
- Notes are senior unsecured, fully guaranteed by domestic subsidiaries; rank equally with unsubordinated debt.
- Special mandatory redemption at 101% if Alion acquisition does not close by April 4, 2022 (or earlier termination).
- Registration rights agreement provides for up to 1.00% additional interest if registration default occurs.

## SEC filing metadata
- accession: 0001193125-21-247744
- form_type: 8-K
- ticker: HII
- cik: 0001501585
- company_name: HUNTINGTON INGALLS INDUSTRIES, INC.
- filed_at: 2021-08-16T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 1.01, 2.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1501585/000119312521247744/0001193125-21-247744-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1501585/000119312521247744/d199506d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-21-247744
- JSON: https://secwatch.observer/filing/0001193125-21-247744.json
- Plain text: https://secwatch.observer/filing/0001193125-21-247744.txt

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