---
schema_version: "secwatch.filing_event.v1"
accession: "0001076598-25-000332"
form_type: "8-K"
ticker: "EOT"
cik: "0001454741"
company_name: "Eaton Vance National Municipal Opportunities Trust"
filed_at: "2025-08-14T23:59:59+00:00"
generated_at: "2026-05-17T13:06:12.356870+00:00"
event_type: "leadership"
sentiment: "negative"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Chairperson Mark R. Fetting dies unexpectedly; Board reduced to 9 members

## Summary
- Mark R. Fetting passed away on August 9, 2025.
- Susan J. Sutherland is serving as acting Chairperson.
- Board size reduced from ten to nine members effective August 12, 2025.

## SEC filing metadata
- accession: 0001076598-25-000332
- form_type: 8-K
- ticker: EOT
- cik: 0001454741
- company_name: Eaton Vance National Municipal Opportunities Trust
- filed_at: 2025-08-14T23:59:59+00:00
- event_type: leadership
- sentiment: negative
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1454741/000107659825000332/0001076598-25-000332-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1454741/000107659825000332/eot8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001076598-25-000332
- JSON: https://secwatch.observer/filing/0001076598-25-000332.json
- Plain text: https://secwatch.observer/filing/0001076598-25-000332.txt

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