---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-25-104942"
form_type: "8-K"
ticker: "NBBK"
cik: "0001979330"
company_name: "NB Bancorp, Inc."
filed_at: "2025-10-31T23:59:59+00:00"
generated_at: "2026-05-17T01:09:25.132867+00:00"
event_type: "m_and_a"
sentiment: "neutral"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# NB Bancorp-Provident merger to close Nov 15; election deadline Nov 7

## Summary
- Election deadline for Provident stockholders to choose merger consideration is 5:00 p.m. ET on Nov 7, 2025.
- Merger effective shortly after midnight on Nov 15, 2025; BankProv conversion over Nov 15 weekend.
- Last trading day for Provident common stock (PVBC) is Nov 14, 2025.
- Consideration: 0.691 NBBK shares or $13.00 cash per Provident share, subject to proration.

## SEC filing metadata
- accession: 0001104659-25-104942
- form_type: 8-K
- ticker: NBBK
- cik: 0001979330
- company_name: NB Bancorp, Inc.
- filed_at: 2025-10-31T23:59:59+00:00
- event_type: m_and_a
- sentiment: neutral
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1979330/000110465925104942/0001104659-25-104942-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1979330/000110465925104942/tm2529923d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-25-104942
- JSON: https://secwatch.observer/filing/0001104659-25-104942.json
- Plain text: https://secwatch.observer/filing/0001104659-25-104942.txt

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