---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-21-109809"
form_type: "8-K"
ticker: "CHY"
cik: "0001222719"
company_name: "CALAMOS CONVERTIBLE & HIGH INCOME FUND"
filed_at: "2021-08-26T23:59:59+00:00"
generated_at: "2026-06-29T07:29:08.499881+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.2
calibrated_materiality_score: 0.2
confidence: "medium"
source: SEC EDGAR
---

# Calamos Convertible and High Income Fund amends charter and bylaws to clarify preferred securities provisions

## Summary
- Amended and restated Declaration of Trust and Bylaws effective August 23, 2021.
- Changes clarify provisions relating to preferred securities.
- No other material modifications disclosed in the filing.
- Exhibits 3.1 and 3.2 attached to the 8-K.

## SEC filing metadata
- accession: 0001104659-21-109809
- form_type: 8-K
- ticker: CHY
- cik: 0001222719
- company_name: CALAMOS CONVERTIBLE & HIGH INCOME FUND
- filed_at: 2021-08-26T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.2
- calibrated_materiality_score: 0.2
- confidence: medium
- sec_items: 5.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1222719/000110465921109809/0001104659-21-109809-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1222719/000110465921109809/tm2122382d3_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-21-109809
- JSON: https://secwatch.observer/filing/0001104659-21-109809.json
- Plain text: https://secwatch.observer/filing/0001104659-21-109809.txt

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