NB Bancorp (NBBK) Stock Fundamentals, Analysis & Risk Signals

Health score, price, valuation, risk signals, and key metrics at a glance.

NB Bancorp

NasdaqCM•Financial Services•Banks - Regional

$23.16+0.19(0.01%)Market closed

Market Cap

$899.45M

P/E

15.2x

P/S

2.2x

P/B

1.1x

NB Bancorp, Inc. focuses on operating as a bank holding company for Needham Bank that provides various banking products and services in the Greater Boston metropolitan area and surrounding communities in the United States. The company offers various deposits, including certificate of deposit, individual retirement, money market, savings, NOW, demand deposit, and interest-bearing and noninterest-bearing checking accounts; and commercial real estate and multifamily residential loans, one- to four-family residential real estate, mortgage warehouse loans, construction and land development, commercial and industrial, and consumer loans, as well as home equity loans and lines of credit. It also invests in securities consisting of U.S. treasury and federal agency securities, government-sponsored residential mortgage-backed securities, corporate bonds, SBA securities and municipal bonds. NB Bancorp, Inc. was founded in 1892 and is based in Needham, Massachusetts.

How this company scores

WeakMetricSide Score: 79/100

Grade capped at D — Interest coverage below 1× (0.6x) — earnings cannot cover interest. Strongest: Cash & Earnings Quality (24/25); weakest: Balance Sheet & Red Flags (14/25).

Profitability18/25

Growth23/25

Balance Sheet & Red Flags14/25

Cash & Earnings Quality24/25

Strengths

Growing revenueRising free cash flowStrong marginsRising earnings

Grade capped at D

Interest coverage below 1× (0.6x) — earnings cannot cover interest.

Valuation vs. 5-year range

Today's multiple positioned against its own trailing range — a visual premium/discount check.

P/E · 15.2x5y range 10.8x – 26.1x

Currently near its 9-quarter median.

P/S · 2.2x5y range 1.6x – 2.4x

Currently near its 9-quarter median.

P/B · 1.1x5y range 0.7x – 1.1x

Watch items

Data-driven signals worth keeping an eye on across the last 8 quarters

Some Concerns

Margin Pressure

Watch

Operating margins declined 8.9% — watch for continued compression, which may signal competitive or cost pressure.

Leverage Risk

Watch

Debt-to-equity has risen 24.4% recently — increasing financial risk even if the current ratio is manageable.

Price & Volume

Market Cap $899.45M

Metrics at a Glance

as of June 2026

Revenue & Profit

Revenue, EBITDA, operating income, net income, EPS, and shares

TTM Revenue: $414.76M
Q. Revenue: $117.35M
TTM EBITDA: $85.76M
TTM Op. Income: $82.69M
Q. Op. Income: $27.49M
TTM Net Income: $59.17M
Q. Net Income: $21.12M
EPS: $0.53
Shares Out.: $39.69M

$414.76M in TTM revenue grew 28.4% YoY, reaching $117.35M last quarter. TTM EBITDA of $85.76M and TTM operating income of $82.69M show growth is flowing through to the bottom line. TTM net income of $59.17M means revenue is converting into profit. Across the last 8 quarters, TTM revenue has risen for 6 consecutive quarters — an improving trend.

Margins

Gross, EBITDA, operating, and net margin trends

Gross Margin: 63.7%
EBITDA Margin: 24.2%
Op. Margin: 23.4%
Net Margin: 18.0%

Op. margin of 23.4% is up 1.2% YoY — cost efficiency is improving. Net margin at 18.0% and gross margin of 63.7% show how much of each revenue dollar survives to profit. Across the last 8 quarters, operating margin has risen for 2 consecutive quarters — an improving trend.

Price Ratios

P/E, P/S, P/B, EV/EBITDA, FCF yield, and earnings yield

P/E Ratio: 15.2x
P/S Ratio: 2.2x
P/B Ratio: 1.1x

At 15.2x P/E, the stock trades within typical market levels. P/S of 2.2x and P/B of 1.1x provide additional context. Use the growth and margin sections to judge whether the multiple is justified. Over the past year, P/E is up 17% — an improving trend.

Assets & Liabilities

Total assets, cash, debt, book value, and leverage

Total Assets: $7.45B
Cash: $400.15M
Long-Term Debt: $181.25M
Book Value: $842.00M
D/E Ratio: 0.2
Debt/EBITDA: 6.4

With $7.45B in assets and $181.25M in long-term debt, D/E is 0.2and book value is $842.00M — a conservative capital structure with a cushion to weather downturns. Across the last 8 quarters, debt/equity has fallen for 2 consecutive quarters — an improving trend.

Cash Flow

Operating cash flow, free cash flow, FCF margin, and earnings quality

Op. Cash Flow: $34.18M
TTM Free Cash Flow: $78.03M
FCF Margin: 18.8%
FCF / Net Income: 1.3

TTM FCF of $78.03M on $34.18M in operating cash flow. The FCF / Net Income ratio of 1.3x means free cash flow covers net income — earnings are backed by cash. Across the last 8 quarters, free cash flow has risen for 2 consecutive quarters — an improving trend.