---
schema_version: "secwatch.filing_event.v1"
accession: "0001057352-26-000054"
form_type: "8-K"
ticker: "CSGP"
cik: "0001057352"
company_name: "COSTAR GROUP, INC."
filed_at: "2026-07-13T21:06:31+00:00"
generated_at: "2026-07-13T21:08:11.037861+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# CoStar Group promotes Robin Rossmann to CFO; he cut European costs 25%

## Summary
- Christian Lown resigns as CFO effective July 31, 2026, for an opportunity outside the industry; no disagreement with CoStar.
- Robin Rossmann, currently Managing Director Europe, appointed CFO effective July 31, 2026.
- Rossmann reduced European cost structure by ~$51M (25%) over two years while delivering double-digit revenue growth.
- Rossmann's compensation: base salary £440K (transitioning to $590K), target bonus 100% of base, $2.5M equity grant, $500K relocation subsidy.
- Rossmann will lead global finance, capital allocation, and investor engagement.

## SEC filing metadata
- accession: 0001057352-26-000054
- form_type: 8-K
- ticker: CSGP
- cik: 0001057352
- company_name: COSTAR GROUP, INC.
- filed_at: 2026-07-13T21:06:31+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1057352/000105735226000054/0001057352-26-000054-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1057352/000105735226000054/csgp-20260707.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001057352-26-000054
- JSON: https://secwatch.observer/filing/0001057352-26-000054.json
- Plain text: https://secwatch.observer/filing/0001057352-26-000054.txt

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