---
schema_version: "secwatch.filing_event.v1"
accession: "0001057352-22-000069"
form_type: "8-K"
ticker: "CSGP"
cik: "0001057352"
company_name: "COSTAR GROUP, INC."
filed_at: "2022-05-09T23:59:59+00:00"
generated_at: "2026-06-25T22:11:46.096726+00:00"
event_type: "other_material"
sentiment: "positive"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# CoStar Group amends bylaws to add proxy access, special meeting right, simple majority voting

## Summary
- Holders of 25% of outstanding common stock can call a special meeting.
- Proxy access: stockholder/group of up to 20 owning 3% for 3 years can nominate up to 2 or 20% of board.
- Eliminated supermajority voting requirements; all stockholder votes now simple majority.
- Other clarifications to advance notice provisions and Delaware law compliance.

## SEC filing metadata
- accession: 0001057352-22-000069
- form_type: 8-K
- ticker: CSGP
- cik: 0001057352
- company_name: COSTAR GROUP, INC.
- filed_at: 2022-05-09T23:59:59+00:00
- event_type: other_material
- sentiment: positive
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 5.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1057352/000105735222000069/0001057352-22-000069-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1057352/000105735222000069/csgp-20220418.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001057352-22-000069
- JSON: https://secwatch.observer/filing/0001057352-22-000069.json
- Plain text: https://secwatch.observer/filing/0001057352-22-000069.txt

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