---
schema_version: "secwatch.filing_event.v1"
accession: "0001558370-25-005147"
form_type: "8-K"
ticker: "NBBK"
cik: "0001979330"
company_name: "NB Bancorp, Inc."
filed_at: "2025-04-22T23:59:59+00:00"
generated_at: "2026-05-23T09:38:45.237114+00:00"
event_type: "earnings"
sentiment: "neutral"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# NB Bancorp Q1 net income $12.7M ($0.33 EPS) vs $15.6M prior; operating EPS $0.35

## Summary
- Operating net income $13.7M ($0.35 diluted) vs $13.3M ($0.34) prior quarter; GAAP includes $884K pension liquidation charge.
- Net interest margin expanded 9 bps to 3.61%; total deposits grew $149M (3.6%) and net loans grew $131.8M (3.1%).
- Repurchased 2,135,286 shares (5% of outstanding) at weighted avg cost of $19.06; tangible book value per share rose $0.31 to $18.20.
- Non-performing loans fell $2.5M to $11.4M; ACL was 0.86% of gross loans; net charge-offs $1.4M (0.12% annualized).
- Commercial real estate loans rose 1.2%; cannabis CRE portfolio decreased $3.4M, all pass-rated and current.

## SEC filing metadata
- accession: 0001558370-25-005147
- form_type: 8-K
- ticker: NBBK
- cik: 0001979330
- company_name: NB Bancorp, Inc.
- filed_at: 2025-04-22T23:59:59+00:00
- event_type: earnings
- sentiment: neutral
- 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/1979330/000155837025005147/0001558370-25-005147-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1979330/000155837025005147/nbbk-20250422x8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001558370-25-005147
- JSON: https://secwatch.observer/filing/0001558370-25-005147.json
- Plain text: https://secwatch.observer/filing/0001558370-25-005147.txt

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