---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-26-046868"
form_type: "8-K"
ticker: "NBBK"
cik: "0001979330"
company_name: "NB Bancorp, Inc."
filed_at: "2026-04-22T23:59:59+00:00"
generated_at: "2026-05-15T04:56:46.971856+00:00"
event_type: "earnings"
sentiment: "neutral"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# NB Bancorp Q1 net income $15.0M, EPS $0.36; declares $0.07 dividend

## Summary
- Net income $15.0M ($0.36 diluted EPS) vs $7.7M ($0.19) prior quarter; operating net income $15.8M ($0.38).
- Net interest income $64.9M (+10.4% QoQ); net interest margin 3.94% (up 2 bps).
- Gross loans grew $223.8M to $6.21B, deposits grew $243.5M to $6.10B.
- Board declared $0.07 quarterly dividend, payable May 20, 2026 to holders of record May 6, 2026.
- Book value per share $18.83, tangible book value $18.00; repurchased 1.29M shares at $21.55.

## SEC filing metadata
- accession: 0001104659-26-046868
- form_type: 8-K
- ticker: NBBK
- cik: 0001979330
- company_name: NB Bancorp, Inc.
- filed_at: 2026-04-22T23:59:59+00:00
- event_type: earnings
- sentiment: neutral
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 2.02, 5.02, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1979330/000110465926046868/0001104659-26-046868-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1979330/000110465926046868/nbbk-20260422x8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-26-046868
- JSON: https://secwatch.observer/filing/0001104659-26-046868.json
- Plain text: https://secwatch.observer/filing/0001104659-26-046868.txt

## Key facts
- Earnings Releases
  NB Bancorp, Inc. reported the quarter ended March 31, 2026 results: net income $15.0 million, EPS $0.36 per diluted common share.
  - Period: the quarter ended March 31, 2026
  - Net income: $15.0 million
  - EPS: $0.36 per diluted common share
  - Result: reported results
  source text: The Company reported net income of $15.0 million, or $0.36 per diluted common share, compared to net income of $7.7 million, or $0.19 per diluted common share, for the prior quarter.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1979330/000110465926046868/0001104659-26-046868-index.htm

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