---
schema_version: "secwatch.filing_event.v1"
accession: "0001437749-25-038848"
form_type: "8-K"
ticker: "NPK"
cik: "0000080172"
company_name: "NATIONAL PRESTO INDUSTRIES INC"
filed_at: "2025-12-29T23:59:59+00:00"
generated_at: "2026-05-16T12:11:39.582901+00:00"
event_type: "other_material"
sentiment: "positive"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# NPK defense unit wins $92.3M Boeing subcontract for Small Diameter Bomb warhead production

## Summary
- Spectra Technologies, a wholly owned subsidiary of NPK's Defense segment, received a $92.3M subcontract from Boeing.
- The subcontract is for production of the warhead for the Small Diameter Bomb (SDB) program.
- Deliveries on this award will begin in late 2026, following completion of current SDB orders with Boeing.
- National Presto Industries operates three segments: Housewares, Defense, and Safety.

## SEC filing metadata
- accession: 0001437749-25-038848
- form_type: 8-K
- ticker: NPK
- cik: 0000080172
- company_name: NATIONAL PRESTO INDUSTRIES INC
- filed_at: 2025-12-29T23:59:59+00:00
- event_type: other_material
- sentiment: positive
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/80172/000143774925038848/0001437749-25-038848-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/80172/000143774925038848/npk20251229_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001437749-25-038848
- JSON: https://secwatch.observer/filing/0001437749-25-038848.json
- Plain text: https://secwatch.observer/filing/0001437749-25-038848.txt

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