---
schema_version: "secwatch.filing_event.v1"
accession: "0000943374-25-000352"
form_type: "8-K"
ticker: "AVBC"
cik: "0002058758"
company_name: "Avidia Bancorp, Inc."
filed_at: "2025-07-31T23:59:59+00:00"
generated_at: "2026-05-17T22:31:22.277769+00:00"
event_type: "other_material"
sentiment: "positive"
materiality_score: 0.9
calibrated_materiality_score: 0.9
confidence: "high"
source: SEC EDGAR
---

# Avidia Bancorp closes IPO in mutual-to-stock conversion; gross proceeds $191.8M

## Summary
- Sold 19,176,250 shares at $10.00; gross proceeds ~$191.8M.
- 900,000 additional shares contributed to Avidia Bank Charitable Foundation.
- Total shares outstanding post-closing: 20,076,250.
- Listing on NYSE under AVBC expected to begin August 1, 2025.
- Subscription offering oversubscribed; refunds being processed.

## SEC filing metadata
- accession: 0000943374-25-000352
- form_type: 8-K
- ticker: AVBC
- cik: 0002058758
- company_name: Avidia Bancorp, Inc.
- filed_at: 2025-07-31T23:59:59+00:00
- event_type: other_material
- sentiment: positive
- materiality_score: 0.9
- calibrated_materiality_score: 0.9
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/2058758/000094337425000352/0000943374-25-000352-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/2058758/000094337425000352/form8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000943374-25-000352
- JSON: https://secwatch.observer/filing/0000943374-25-000352.json
- Plain text: https://secwatch.observer/filing/0000943374-25-000352.txt

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