---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-119755"
form_type: "8-K"
ticker: "AVBC"
cik: "0002058758"
company_name: "Avidia Bancorp, Inc."
filed_at: "2025-05-14T23:59:59+00:00"
generated_at: "2026-05-21T10:54:43.988304+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Avidia Bancorp engages KBW to market stock offering in Assabet Valley conversion

## Summary
- KBW receives $30K management fee (credited toward success fee) and success fee of 1.25% of subscription offer proceeds and 3.0% of community offer proceeds.
- KBW also receives $75K for conversion agent and data processing services; out-of-pocket expenses reimbursed.
- If syndicated community offering occurs, KBW transaction fee capped at 5.0% of total shares sold.
- Registration statement on Form S-1 declared effective May 13, 2025.

## SEC filing metadata
- accession: 0001193125-25-119755
- form_type: 8-K
- ticker: AVBC
- cik: 0002058758
- company_name: Avidia Bancorp, Inc.
- filed_at: 2025-05-14T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/2058758/000119312525119755/0001193125-25-119755-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/2058758/000119312525119755/d112454d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-119755
- JSON: https://secwatch.observer/filing/0001193125-25-119755.json
- Plain text: https://secwatch.observer/filing/0001193125-25-119755.txt

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