NB Bancorp Inc Dossier - Source-backed chat

NB Bancorp Inc

NBBKNASDAQ

SectorFinancials

IndustryRegional Banks

Beta (adjusted)0.33

Intrinsic Value $24.65median of 2 methodsbased on filings through 30 Jun 2026

Market Price $22.27Price as of 1 Oct 2026

Near fair valueIntrinsic value is 11% above the market price

−50% · IV below pricenear fair value ±15%IV above price · +50%

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Market Cap $975.8M

Enterprise Value $575.7M

Shares Outstanding 40M diluted

Next Earnings Date22 Oct 2026

Last ex-dividend5 Aug 2026

All prices and values are periodic snapshots, not live quotes. Source dates are shown for reference.

Thesis

Street consensus, scenarios, merits, risks, and invalidation triggers

AI-assisted

Thesis Summary

NB Bancorp, Inc. (NBBK) represents a compelling capital-deployment story in the New England regional banking sector. Following its transition from a mutual savings bank to a fully public stock company, the bank has been armed with substantial capital. The strategic acquisition of Provident Bancorp (completed in late 2025) has significantly expanded its footprint into Southern New Hampshire and Eastern Massachusetts, driving robust asset and loan growth. While the bank faces near-term margin and credit pressures from acquired non-performing commercial assets, its strong capital position (14.0% risk-based capital ratio at year-end 2025), expanding net interest margin (3.94% in Q1 2026), active share buybacks, and insider buying support a highly favorable risk-reward profile.

This section is the 12-month view: analyst targets and the probability-weighted scenarios built from them. The intrinsic value at the top of this page answers a different question: what the business is worth today.

Street view · analyst 12-month targets2 analysts · as of 18 Aug 2026

Low · most bearish analyst$25.00

Mean target$25.50

High · most bullish analyst$26.00

Our research · scenarios, merits, risks, and invalidation triggersResearch as of 19 Jun 2026

Scenarios · 12-month scenario targetsAnchored at research date

Bear CaseDownside scenario

Severe credit deterioration within the concentrated commercial real estate (CRE) and cannabis portfolios leads to elevated charge-offs and a spike in provisions for credit losses. Integration friction with Provident Bancorp keeps noninterest expenses elevated, depressing the operating efficiency ratio above 62% and stalling EPS growth.

Base CaseCentral scenario

The integration of Provident Bancorp proceeds smoothly, allowing NBBK to realize projected operational synergies and lower its efficiency ratio back toward the mid-50s. Loan growth continues at a disciplined pace, supported by strong relationship-based commercial lending in Massachusetts. Net interest margin remains stable near 3.90% as deposit costs stabilize. Share repurchases under the 5% buyback program provide steady EPS support.

Scenarios are anchored to street consensus at the research date, with our probabilities and rationale.

Key Investment Merits

Substantial capital surplus from its recent mutual-to-stock conversion, providing a strong buffer and dry powder for growth.
Accretive expansion via the Provident Bancorp acquisition, expanding the physical footprint to 18 branches and adding $1.2B+ in loans.
Strong net interest margin (3.94% in Q1 2026) driven by disciplined asset pricing and relationship-focused commercial lending.
Active capital return via a 5% share repurchase program and a sustainable quarterly dividend of $0.07 per share.

Key Investment Risks

Concentration risk in commercial real estate (CRE) and specialized lending segments, including cannabis facility loans.
Elevated non-performing loans (0.73% of total loans in Q1 2026) primarily inherited from the Provident acquisition.
Integration and execution risks associated with combining technology platforms and operations of BankProv.

Thesis Invalidation Triggers

A sustained increase in the non-performing loans (NPL) ratio above 1.25%.
Failure to reduce the operating efficiency ratio below 58% by the end of fiscal year 2026.
A contraction of the net interest margin (NIM) below 3.65% due to aggressive deposit competition.

All scenarios are estimates and subject to change. Past performance is not indicative of future results.

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Explore this dossier

ValuationIntrinsic value, the six-method breakdown, peer medians, and your assumptions sandbox.Financial SnapshotRevenue, profitability, returns, balance sheet, dividends, and the filing-level detail.Qualitative AnalysisBusiness overview, strategic initiatives, and mergers, acquisitions & partnerships.Outlook & Key DatesForward estimates, reporting calendar, and the monitoring framework.