---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-26-081584"
form_type: "8-K"
ticker: "NSA"
cik: "0001618563"
company_name: "National Storage Affiliates Trust"
filed_at: "2026-07-08T12:30:24+00:00"
generated_at: "2026-07-08T12:35:10.421354+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# NSA issues supplemental disclosures for Public Storage merger; three shareholder lawsuits filed

## Summary
- Three lawsuits filed in NY and CO challenging the merger, alleging breaches of fiduciary duty and seeking injunctive relief.
- Company voluntarily supplements proxy statement with additional financial analyses and Dropdown JV estimates.
- Supplemental disclosures include comparable company analysis table and illustrative JV estimates for seven-year period.
- Company believes claims are without merit but makes disclosures to avoid delay and expense.
- Special meeting of shareholders to vote on merger scheduled for July 14, 2026.

## SEC filing metadata
- accession: 0001104659-26-081584
- form_type: 8-K
- ticker: NSA
- cik: 0001618563
- company_name: National Storage Affiliates Trust
- filed_at: 2026-07-08T12:30:24+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1618563/000110465926081584/0001104659-26-081584-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1618563/000110465926081584/tm2619947d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-26-081584
- JSON: https://secwatch.observer/filing/0001104659-26-081584.json
- Plain text: https://secwatch.observer/filing/0001104659-26-081584.txt

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