NB Bancorp, Inc. Common Stock
- Open
- 21.14
- Day high
- 21.61
- Day low
- 21.03
- Prev close
- 21.13
- Volume
- 64K
- Mkt cap
- $945M
- P/E (TTM)
- 15.6
- EPS (TTM)
- $1.38
- P/B
- 1.1
- P/S
- 2.7
- Yield
- 1.30%
- Per share
- $0.28
- ▲Insiders net buying $279K over the last 3 months (14 open-market buys, 0 sales)
- ◆Cluster buying — multiple insiders bought within days
- 🏛Institutions accumulating (13F)
NB Bancorp, Inc. Common Stock (NBBK) is a Financial Services company listed on NASDAQ. The stock is up 16% over the past year. Over the trailing 3 months, insiders filed 14 open-market buys and 0 sales (SEC Form 4).
NB Bancorp, Inc. Common Stock (NBBK) financials & analyst ratings
Fundamentals (TTM)
Source: exchange market data + company filings. Figures are trailing-twelve-month or as most recently reported. For informational purposes only — not investment advice.
NBBK earnings date, history & EPS estimates
| Report date | EPS est | EPS actual | Surprise | Revenue | Rev. surprise |
|---|---|---|---|---|---|
| Apr 22, 2026 | $0.54 | $0.38 | -29.6% | $69M | -3.1% |
| Jan 22, 2026 | $0.49 | $0.51 | +4.1% | $70M | -7.2% |
| Oct 22, 2025 | $0.42 | $0.45 | +7.1% | $85M | — |
| Jul 23, 2025 | $0.35 | $0.40 | +14.3% | $84M | — |
| Apr 22, 2025 | $0.35 | $0.35 | +0.0% | $81M | — |
| Jan 22, 2025 | $0.32 | $0.34 | +6.3% | $81M | — |
| Oct 30, 2024 | $0.26 | $0.33 | +26.9% | $77M | — |
| Jul 24, 2024 | $0.24 | $0.24 | +0.0% | $74M | — |
| Apr 24, 2024 | $0.17 | $0.22 | +29.4% | $72M | — |
| Nov 22, 2023 | — | $0.20 | — | $63M | — |
| Jun 30, 2022 | — | $0.19 | — | $29M | — |
| Mar 31, 2022 | — | $0.10 | — | $25M | — |
NBBK insider trading activity (SEC Form 4)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| May 18, 2026 | CAMPANELLI JOSEPH Pdirector, officer, other: President & CEO | Buy | 133 | $19.17 |
| May 18, 2026 | CAMPANELLI JOSEPH Pdirector, officer, other: President & CEO | Buy | 500 | $19.16 |
| May 18, 2026 | CAMPANELLI JOSEPH Pdirector, officer, other: President & CEO | Buy | 247 | $19.21 |
| May 18, 2026 | CAMPANELLI JOSEPH Pdirector, officer, other: President & CEO | Buy | 253 | $19.20 |
| May 18, 2026 | CAMPANELLI JOSEPH Pdirector, officer, other: President & CEO | Buy | 767 | $19.18 |
| May 18, 2026 | CAMPANELLI JOSEPH Pdirector, officer, other: President & CEO | Buy | 100 | $19.18 |
| May 18, 2026 | CAMPANELLI JOSEPH Pdirector, officer, other: President & CEO | Buy | 400 | $19.18 |
| Apr 27, 2026 | CAMPANELLI JOSEPH Pdirector, officer, other: President & CEO | Buy | 100 | $19.47 |
| Apr 27, 2026 | Darcey Williamdirector | Tax | 4,918 | $19.82 |
| Apr 27, 2026 | Jackson Angeladirector | Tax | 4,918 | $19.82 |
| Apr 27, 2026 | Whalen Markdirector | Tax | 4,918 | $19.82 |
| Apr 27, 2026 | NOLAN JOSEPH R JRdirector | Tax | 4,918 | $19.82 |
| Apr 27, 2026 | Lynch Christopher R.director | Tax | 4,150 | $19.82 |
| Apr 27, 2026 | CAMPANELLI JOSEPH Pdirector, officer, other: President & CEO | Tax | 24,371 | $19.82 |
| Apr 27, 2026 | CAMPANELLI JOSEPH Pdirector, officer, other: President & CEO | Buy | 320 | $19.33 |
Source: NBBK SEC Form 4 filings, latest May 18, 2026. For informational purposes only — not investment advice.
See the full NBBK insider & 13F page →NB Bancorp, Inc. Common Stock company profile
Overview
NB Bancorp, Inc. (NASDAQ:NBBK) is a Massachusetts-based bank holding company founded in 1892 that operates through its subsidiary, Needham Bank. The company serves customers across the Greater Boston metropolitan area and surrounding communities in Massachusetts, eastern Connecticut, southern New Hampshire, and Rhode Island. As a regional bank with over 130 years of operating history, NB Bancorp has established itself as a community-focused financial institution providing traditional banking services to both individual and commercial customers in the New England region.
Business
NB Bancorp operates in the regional banking industry, which involves accepting deposits from customers and lending those funds to borrowers while earning a profit from the interest rate spread. The company functions as a traditional community bank, offering a comprehensive suite of financial services through its operating subsidiary, Needham Bank. The company's core business segments include deposit-taking services and lending operations. On the deposit side, NB Bancorp offers various account types including certificates of deposit, individual retirement accounts, money market accounts, savings accounts, NOW accounts (negotiable order of withdrawal accounts that pay interest), demand deposit accounts, and both interest-bearing and non-interest-bearing checking accounts. These deposit products serve as the primary source of funding for the bank's lending activities. The lending portfolio consists of several key categories. Commercial real estate and multifamily lending represents a significant portion of the loan book, providing financing for office buildings, retail properties, and apartment complexes. One-to-four family residential real estate loans include traditional home mortgages for individual homeowners. Construction and land development loans finance real estate development projects during the building phase. Commercial and industrial loans provide working capital and equipment financing to local businesses. The bank also offers consumer loans and home equity loans and lines of credit to individual customers. Additionally, NB Bancorp maintains an investment portfolio consisting of U.S. Treasury securities, federal agency securities, government-sponsored residential mortgage-backed securities, municipal bonds, and corporate bonds. This securities portfolio provides additional income and helps manage the bank's interest rate risk and liquidity needs.
Revenue model
NB Bancorp generates revenue primarily through net interest income, which is the difference between the interest earned on loans and investments and the interest paid on deposits and borrowings. This is the fundamental business model of traditional banking - borrowing money at lower rates (through customer deposits) and lending it at higher rates to generate profit. The bank's paying customers include individual consumers seeking mortgages, home equity loans, and personal banking services, as well as commercial clients requiring business loans, real estate financing, and commercial banking services. Small to medium-sized businesses in the New England region represent a key customer segment, particularly those needing commercial real estate financing and working capital loans. Several factors can significantly impact NB Bancorp's profitability margins. Interest rate environment is the most critical factor - rising rates generally benefit banks by widening net interest margins, while falling rates can compress margins. Credit quality directly affects profitability through loan loss provisions; economic downturns can lead to higher default rates and reduced earnings. Competition from larger banks and fintech companies can pressure both deposit rates (increasing funding costs) and loan rates (reducing interest income). Regulatory changes can impact operational costs and capital requirements. Local economic conditions in the New England markets affect loan demand and credit quality, while real estate market trends are particularly important given the bank's significant exposure to real estate lending. Deposit flows and customer behavior can also impact funding costs, especially during periods of market volatility when customers might move funds to higher-yielding alternatives.
Competitive moat
NB Bancorp's competitive moat is relatively modest, typical of smaller regional banks. The company's primary defensive characteristics include its long-established community presence dating back to 1892, which has built customer relationships and local brand recognition in the Greater Boston area. Geographic market knowledge allows the bank to better assess local real estate values and business conditions compared to larger, more distant competitors. The bank also benefits from regulatory barriers to entry in banking, which require significant capital and regulatory approval to establish new banks. However, the moat is not particularly strong. Limited differentiation exists in basic banking products, making it difficult to command premium pricing. Scale disadvantages compared to larger banks result in higher operational costs per dollar of assets and limited technology investment capabilities. Geographic concentration creates vulnerability to regional economic downturns. The bank faces intense competition from both larger national banks with greater resources and smaller community banks with similar positioning. Potential disruption comes from multiple sources: fintech companies offering digital-first banking experiences, larger banks with superior technology platforms and marketing budgets, and alternative lending platforms that can compete for commercial loans. The rise of digital banking and changing customer preferences toward online services particularly challenges traditional community banks that have historically relied on relationship-based banking. Overall, while NB Bancorp has some defensive characteristics, its moat is narrow and faces ongoing pressure from technological and competitive forces.
Risks & safety
NB Bancorp demonstrates a solid margin of safety with strong financial fundamentals, though typical banking sector risks remain. • Liquidity position: Strong with $211 million in cash and short-term investments as of Q4 2024, representing over 4% of total assets • Debt levels: Moderate debt-to-equity ratio of 0.16, indicating conservative leverage • Solvency risk: Low given strong equity base of $765 million and positive operating cash flows • Capital adequacy: Well-capitalized with tangible book value supporting lending capacity • Valuation metrics: Trading at reasonable multiples with P/E of 11.4x and P/B of 0.93x, suggesting no significant overvaluation • Profitability trends: 2024 net income of $42.1 million significantly improved from $9.8 million in 2023 • Asset quality: Portfolio concentrated in real estate lending creates regional economic sensitivity • Interest rate exposure: Balance sheet structure exposes the bank to interest rate cycle risks
Recent development
Based on the financial data trends, NB Bancorp has experienced significant operational improvements over the past few years. The most notable development has been the substantial recovery in profitability, with net income jumping from $9.8 million in 2023 to $42.1 million in 2024, representing a more than four-fold increase. This improvement reflects both revenue growth and improved operational efficiency. Balance sheet expansion has been another key trend, with total assets growing from $3.6 billion in 2022 to $5.2 billion by the end of 2024, indicating successful business growth and market expansion. The bank has maintained strong liquidity management, with cash and short-term investments increasing substantially to over $200 million by Q4 2024. Geographic market positioning appears to have strengthened, with the bank successfully expanding its presence across Massachusetts, eastern Connecticut, southern New Hampshire, and Rhode Island. The lending portfolio diversification across commercial real estate, residential mortgages, and commercial & industrial loans has provided balanced revenue streams. Operational efficiency improvements are evident in the significantly improved return on equity, which increased from 1.3% in 2023 to 5.5% in 2024. The bank has also maintained conservative capital management with debt-to-equity ratios remaining stable around 0.16, indicating disciplined growth strategies.
NBBK company profile · for informational purposes only — not investment advice.
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