---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-26-394393"
form_type: "8-K"
ticker: "WSO"
cik: "0000105016"
company_name: "WATSCO INC"
filed_at: "2026-09-17T20:30:15+00:00"
generated_at: "2026-09-17T20:31:18.958324+00:00"
event_type: "m_and_a"
sentiment: "positive"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Watsco to acquire Granite Group Holdings for $505.0M in cash and stock

## Summary
- Aggregate consideration $505.0M; 80% cash, 20% Watsco common stock.
- Granite Group is a diversified plumbing/HVAC distributor with ~$500M sales across seven Northeast states.
- Estimated 324,257 shares to be issued based on recent 10-day VWAP; actual count subject to closing adjustments.
- Closing conditioned on HSR waiting-period expiration and other customary closing conditions.

## SEC filing metadata
- accession: 0001193125-26-394393
- form_type: 8-K
- ticker: WSO
- cik: 0000105016
- company_name: WATSCO INC
- filed_at: 2026-09-17T20:30:15+00:00
- event_type: m_and_a
- sentiment: positive
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 3.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/105016/000119312526394393/0001193125-26-394393-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/105016/000119312526394393/wso-20260912.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-26-394393
- JSON: https://secwatch.observer/filing/0001193125-26-394393.json
- Plain text: https://secwatch.observer/filing/0001193125-26-394393.txt

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