secwatch / observer
NPK NATIONAL PRESTO INDUSTRIES INC
CIK 0000080172 25 ready 8-Ks latest May 21, 2026, 4:34 PM ET RSS · JSON
Activity: NORMAL 2 filings / 30d vs 1 baseline
Ready 8-Ks 25
Latest filing May 21, 2026, 4:34 PM ET
Top materiality 0.90
Event mix other_material ×15 · earnings ×8 · leadership ×1
Sentiment 16 pos · 4 neg · 5 neu

Recent 8-K filings for NPK

Materiality & sentiment trend

Max materiality 0.90 · Median 0.65 · Most common event other_material

16 positive 4 negative 5 neutral

source · NPK on sec.gov