secwatch / observer

8-K filed May 29, 2026, 8:05 AM ET ticker CSGP CIK 0001057352

M&A confidence high sentiment positive materiality 0.80

CoStar Group acquires Zonda for $800M cash; expands into new home construction data and marketplaces

COSTAR GROUP, INC.

Acquisition of Zonda, a new home data and software provider, for $800M in cash; not subject to financing condition.
Zonda serves over 3,000 customers; 104% net customer retention on subscription-based revenue.
Deal expected to close in H2 2026; accretive to adjusted EPS in first full year of ownership.
CoStar plans cross-sell across commercial, residential, multifamily, lending; pairs Zonda's Envision with Matterport's spatial tech.
Termination provision allows either party to exit if not closed by May 28, 2027.

item 1.01 item 7.01 item 9.01

Machine-readable event card

schema_version: secwatch.filing_event.v1
accession: 0001193125-26-246361
form_type: 8-K
ticker: CSGP
cik: 0001057352
company_name: COSTAR GROUP, INC.
filed_at: 2026-05-29T12:05:09+00:00
discovered_at: 2026-05-29T12:08:36.904496+00:00
generated_at: 2026-05-29T12:09:40.957681+00:00
sec_items: ["1.01", "7.01", "9.01"]
event_type: m_and_a
sentiment: positive
materiality_score: 0.8
calibrated_materiality_score: 0.8
confidence: high
secwatch_canonical_url: https://secwatch.observer/filing/0001193125-26-246361
json_url: https://secwatch.observer/filing/0001193125-26-246361.json
markdown_url: https://secwatch.observer/filing/0001193125-26-246361.md
text_url: https://secwatch.observer/filing/0001193125-26-246361.txt
edgar_index_url: https://www.sec.gov/Archives/edgar/data/1057352/000119312526246361/0001193125-26-246361-index.htm
edgar_primary_document_url: https://www.sec.gov/Archives/edgar/data/1057352/000119312526246361/d91732d8k.htm
generated_by_model: deepseek-v4-flash:cloud@v2
review_status: machine_generated
human_reviewed: false
corrected: false
correction_note: null
correction_timestamp: null
superseded_by: null

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