---
schema_version: "secwatch.filing_event.v1"
accession: "0001558370-24-013971"
form_type: "8-K"
ticker: "NBBK"
cik: "0001979330"
company_name: "NB Bancorp, Inc."
filed_at: "2024-10-30T23:59:59+00:00"
generated_at: "2026-05-30T08:36:53.099494+00:00"
event_type: "earnings"
sentiment: "negative"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# NB Bancorp Q3 net income $8.4M ($0.21/sh), down from $9.5M prior quarter; operating EPS $0.33

## Summary
- Net income $8.4M ($0.21 diluted) vs $9.5M ($0.24) prior quarter; operating net income $13.1M ($0.33) excluding $4.8M one-time charges.
- Gross loans rose $151.8M (3.7%) to $4.25B; net interest margin expanded 5bps to 3.51%.
- Sold $1.9M loss on AFS securities (0.97% yield) reinvested at 4.27%; surrendered $46.7M BOLI (3.08%) for $50M new BOLI at 4.81%.
- Net charge-offs $5.2M (0.50% annualized) vs $0.9M prior; $4.0M charge-off on office participation loan; NPLs down to $16.0M from $20.7M.
- Deposits grew $124.9M (3.2%) to $4.04B; brokered deposits up 10%; core deposits up 2.6%.

## SEC filing metadata
- accession: 0001558370-24-013971
- form_type: 8-K
- ticker: NBBK
- cik: 0001979330
- company_name: NB Bancorp, Inc.
- filed_at: 2024-10-30T23:59:59+00:00
- event_type: earnings
- sentiment: negative
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1979330/000155837024013971/0001558370-24-013971-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1979330/000155837024013971/nbbk-20241030x8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001558370-24-013971
- JSON: https://secwatch.observer/filing/0001558370-24-013971.json
- Plain text: https://secwatch.observer/filing/0001558370-24-013971.txt

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