NB BANCORP, INC.
NB BANCORP, INC. is a Public Limited Company registered in United States under 001730779, and its current status with Massachusetts Secretary of the Commonwealth is active. The company was incorporated on 7 December 2023 and lists its registered address as United States. 2 shareholders are on record for NB BANCORP, INC., and since every one of them is a company rather than an individual, this particular filing does not on its own establish an ultimate beneficial owner (UBO) — identifying one would mean tracing the ownership of each shareholding company in turn. This profile is sourced directly from Massachusetts Secretary of the Commonwealth and was last updated on 3 October 2026.
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Shareholders
2
Two shareholders are currently on record for NB BANCORP, INC., reflecting the stock ledger maintained under state corporate law (e.g. §219 of the Delaware General Corporation Law) rather than a public filing.
The largest of these is Fidelity Salem Street Trust-Fidelity Small Cap Index Fund, holding 2.2% — the largest recorded stake — followed by iShares Trust-iShares Russell 2000 Value ETF at 2%.
Because every shareholder shown is a company rather than an individual, the ownership chain continues above this level, and no beneficial owner can be established from this filing alone.
| Shareholder | Type | Holding | Source Document |
|---|---|---|---|
| Fidelity Salem Street Trust-Fidelity Small Cap Index Fund | 2.2% | Massachusetts Secretary of the Commonwealth | |
| iShares Trust-iShares Russell 2000 Value ETF | 2% | Massachusetts Secretary of the Commonwealth |
Officers
5
The Executive Vp & Coo of NB BANCORP, INC. currently on record is Salvatore J. Rinaldi; five officers are currently on record for NB BANCORP, INC., filed with Massachusetts Secretary of the Commonwealth.
The register reports 24 officers in total, including past appointments, though only the 5 most relevant records are shown here.
Management authority at NB BANCORP, INC. sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control.
The source filing doesn't specify representation authority — whether officers can act individually or must sign jointly to bind the company — so that detail isn't available here.
Group Structure
NB BANCORP, INC. has no recorded parent company — it sits at the top of its own group structure, with 1 subsidiary recorded beneath it across 1 jurisdiction. Each of these downward relationships is derived rather than filed: resolved by matching entities across the registry network, not stated directly in a single document.
Those 1 subsidiary spans United States jurisdiction, though this list should not be read as complete — subsidiaries only become visible here where shareholder data has actually been filed with a register, so holdings in jurisdictions without that filing simply won't appear.
NB BANCORP, INC.
United States
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Frequently Asked Questions
Who owns NB BANCORP, INC.?
Two shareholders are currently on record for NB BANCORP, INC., reflecting the stock ledger maintained under state corporate law (e.g. §219 of the Delaware General Corporation Law) rather than a public filing. The largest of these is Fidelity Salem Street Trust-Fidelity Small Cap Index Fund, holding 2.2% — the largest recorded stake — followed by iShares Trust-iShares Russell 2000 Value ETF at 2%. Because every shareholder shown is a company rather than an individual, the ownership chain continues above this level, and no beneficial owner can be established from this filing alone.
Who is NB BANCORP, INC.'s UBO (Ultimate Beneficial Owner)?
Every shareholder recorded for NB BANCORP, INC. is itself a company rather than a natural person, so no Ultimate Beneficial Owner (UBO) is identified at this level; establishing one would require tracing the ownership of each shareholding company in turn.
How many shareholders does NB BANCORP, INC. have on record?
2 shareholders are shown on record for NB BANCORP, INC..
What is NB BANCORP, INC.'s company registration number?
NB BANCORP, INC.'s registration number is 001730779, filed with Massachusetts Secretary of the Commonwealth in United States. Its current status on the register is active.
Is NB BANCORP, INC. still an active company?
NB BANCORP, INC.'s status on Massachusetts Secretary of the Commonwealth is listed as active.
When was NB BANCORP, INC. incorporated?
NB BANCORP, INC. was incorporated on 7 December 2023, according to Massachusetts Secretary of the Commonwealth.
What is NB BANCORP, INC.'s registered address?
The registered address on file for NB BANCORP, INC. is United States.
What legal structure is NB BANCORP, INC. registered as?
NB BANCORP, INC. is registered as a Public Limited Company in United States.
Who are the officers/directors of NB BANCORP, INC.?
The Executive Vp & Coo of NB BANCORP, INC. currently on record is Salvatore J. Rinaldi; five officers are currently on record for NB BANCORP, INC., filed with Massachusetts Secretary of the Commonwealth. Management authority at NB BANCORP, INC. sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control.
Does NB BANCORP, INC. have a parent company or subsidiaries?
NB BANCORP, INC. has no recorded parent company — it sits at the top of its own group structure, with 1 subsidiary recorded beneath it across 1 jurisdiction. Those 1 subsidiary spans United States jurisdiction, though this list should not be read as complete — subsidiaries only become visible here where shareholder data has actually been filed with a register, so holdings in jurisdictions without that filing simply won't appear.
Can Zavia monitor changes to NB BANCORP, INC.'s ownership over time?
This profile reflects a point-in-time snapshot from Massachusetts Secretary of the Commonwealth. Zavia's monitoring API can track changes to NB BANCORP, INC.'s registered shareholders, officers, and group structure going forward, flagging updates as they're filed rather than requiring a manual recheck.
Can I access NB BANCORP, INC.'s data through an API?
Yes. Zavia's API connects directly to official government ownership registries across 195 countries and territories, including United States, so records like NB BANCORP, INC.'s registration, shareholder, UBO, and group-structure data can be queried programmatically instead of viewed one page at a time.
Where does this company information come from, and how current is it?
This record is sourced directly from Massachusetts Secretary of the Commonwealth and was last synced on 3 October 2026.