Filer Snapshot

NB Bancorp, Inc.

CIK 0001979330. SEC filing timeline plus parsed ownership intelligence from 13F, 13D/G, and Forms 3/4/5 where available.

Entity Type

Company

Total Filings

242

Latest Filing

21 May 2026

Industry

Savings Institutions, Not Federally Chartered

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  • Open 13F if you want portfolio holdings.
  • Open 13D/G or insider pages only when this CIK has those rows.
Open insider trading context
Source: SEC filing 8-K

8-K filed on 21 May 2026 for CIK 0001979330.

View Source Filing
Symbol
NBBK on Nasdaq
Industry
Savings Institutions, Not Federally Chartered (Office Of Finance)
Business address
1063 Great Plain Avenue, Needham, MA, 02492
Fiscal year end
31 December

Filer intelligence

What SEC filings say about NB Bancorp, Inc.

A compact read of parsed XML filings. 13F, 13D/G, and Forms 3/4/5 are shown separately because they answer different ownership questions.

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SEC source mix

Counts show available parsed rows, not one combined ownership total.

No XML rows yet
13F portfolio No rows yet

Quarterly institutional portfolio holdings.

13D/G stakes No rows yet

Beneficial ownership and large-stake disclosures.

Forms 3/4/5 No rows yet

Officer, director, and 10% owner holdings or transactions.

No parsed ownership summary yet

We still show the SEC filing timeline below. The intelligence summary will populate when parsed 13F, 13D/G, or Forms 3/4/5 data exists for this CIK.

Latest update

What changed recently for NB Bancorp, Inc.

New fact period available

Latest financial period: Q1 2026. Open the source-backed page to inspect the fresh filing or facts context.

Update date

08 May 2026

Page type

Company facts

Latest period

Q1 2026

SEC-backed company facts were refreshed from filings filed on 08 May 2026.

Open company facts Browse recent public updates

Benchmark Context

Benchmark context for this company

NB Bancorp, Inc. has a source-backed company facts view where you can compare the latest reported metrics with its own recent history and with peer rankings for the same metric.

Compared with

Start on the facts page for period-to-period context, then open a metric ranking when you want to compare the same reported fact across other SEC-reporting companies.

Why this is notable

Latest financial period: Q1 2026. That gives you a fresh baseline before you compare this company with peers.

  • Latest company facts filing date: 08 May 2026.
  • Peer comparisons stay conservative: same metric, compatible units, latest valid company row only.
  • Open the facts page first if you want the cleanest path to verification.

Benchmark context is only shown where the app has enough comparable SEC-backed data to keep the interpretation honest.

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Filer Overview

NB Bancorp, Inc. has filed 242 SEC EDGAR filings since 09 Jun 2023. Common forms include 8-K, 4, SCHEDULE 13G/A, 4/A and more.

NB Bancorp, Inc. SEC filings NB Bancorp, Inc. insider transactions NB Bancorp, Inc. company facts NBBK holder history

Latest Filings

Recent SEC filings for NB Bancorp, Inc. with direct links to document and filing folders.

4

FORM 4

Filing date
18 May 2026
Reporting date
15 May 2026
SEC evidence
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SCHEDULE 13G/A File 005-94523

SCHEDULE 13G/A filing

Filing date
15 May 2026
Reporting date
Not listed
SEC evidence
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4/A

FORM 4/A

Filing date
15 May 2026
Reporting date
24 Apr 2026
SEC evidence
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4/A

FORM 4/A

Filing date
15 May 2026
Reporting date
24 Apr 2026
SEC evidence
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4/A

FORM 4/A

Filing date
15 May 2026
Reporting date
24 Apr 2026
SEC evidence
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4/A

FORM 4/A

Filing date
15 May 2026
Reporting date
24 Apr 2026
SEC evidence
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4/A

FORM 4/A

Filing date
15 May 2026
Reporting date
24 Apr 2026
SEC evidence
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4/A

FORM 4/A

Filing date
15 May 2026
Reporting date
24 Apr 2026
SEC evidence
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4

FORM 4

Filing date
27 Apr 2026
Reporting date
24 Apr 2026
SEC evidence
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4

FORM 4

Filing date
27 Apr 2026
Reporting date
24 Apr 2026
SEC evidence
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4

FORM 4

Filing date
27 Apr 2026
Reporting date
24 Apr 2026
SEC evidence
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4

FORM 4

Filing date
27 Apr 2026
Reporting date
24 Apr 2026
SEC evidence
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4

FORM 4

Filing date
27 Apr 2026
Reporting date
24 Apr 2026
SEC evidence
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4

FORM 4

Filing date
27 Apr 2026
Reporting date
24 Apr 2026
SEC evidence
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4

FORM 4

Filing date
27 Apr 2026
Reporting date
24 Apr 2026
SEC evidence
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4

FORM 4

Filing date
27 Apr 2026
Reporting date
24 Apr 2026
SEC evidence
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4

FORM 4

Filing date
24 Apr 2026
Reporting date
24 Apr 2026
SEC evidence
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4

FORM 4

Filing date
30 Mar 2026
Reporting date
09 Mar 2026
SEC evidence
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3

FORM 3

Filing date
30 Mar 2026
Reporting date
02 Mar 2026
SEC evidence
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SCHEDULE 13G/A File 005-94523

SCHEDULE 13G/A filing

Filing date
27 Mar 2026
Reporting date
Not listed
SEC evidence
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DEF 14A File 001-41899

DEF 14A

Filing date
27 Mar 2026
Reporting date
29 Apr 2026
Next action
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ARS File 001-41899

ARS

Filing date
27 Mar 2026
Reporting date
31 Dec 2025
SEC evidence
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4/A

FORM 4/A

Filing date
20 Mar 2026
Reporting date
06 Mar 2026
SEC evidence
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4

FORM 4

Filing date
19 Mar 2026
Reporting date
19 Mar 2026
SEC evidence
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4

FORM 4

Filing date
09 Mar 2026
Reporting date
06 Mar 2026
SEC evidence
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4

FORM 4

Filing date
09 Mar 2026
Reporting date
09 Mar 2026
SEC evidence
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4

FORM 4

Filing date
27 Feb 2026
Reporting date
25 Feb 2026
SEC evidence
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4

FORM 4

Filing date
27 Feb 2026
Reporting date
25 Feb 2026
SEC evidence
Open document Open filing
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4

FORM 4

Filing date
27 Feb 2026
Reporting date
25 Feb 2026
SEC evidence
Open document Open filing
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4

FORM 4

Filing date
27 Feb 2026
Reporting date
25 Feb 2026
SEC evidence
Open document Open filing
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4

FORM 4

Filing date
27 Feb 2026
Reporting date
25 Feb 2026
SEC evidence
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4

FORM 4

Filing date
27 Feb 2026
Reporting date
25 Feb 2026
SEC evidence
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4

FORM 4

Filing date
27 Feb 2026
Reporting date
25 Feb 2026
SEC evidence
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4

FORM 4

Filing date
27 Feb 2026
Reporting date
25 Feb 2026
SEC evidence
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4

FORM 4

Filing date
27 Feb 2026
Reporting date
25 Feb 2026
SEC evidence
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SCHEDULE 13G File 005-94523

SCHEDULE 13G filing

Filing date
13 Feb 2026
Reporting date
Not listed
SEC evidence
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S-8 POS File 333-291554

S-8 POS

Filing date
09 Feb 2026
Reporting date
Not listed
SEC evidence
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SCHEDULE 13G File 005-94523

SCHEDULE 13G filing

Filing date
30 Jan 2026
Reporting date
Not listed
SEC evidence
Open document Open filing
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4

FORM 4

Filing date
30 Jan 2026
Reporting date
24 Jan 2025
SEC evidence
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4

FORM 4

Filing date
06 Jan 2026
Reporting date
02 Jan 2026
SEC evidence
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4

FORM 4

Filing date
06 Jan 2026
Reporting date
02 Jan 2026
SEC evidence
Open document Open filing
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4

FORM 4

Filing date
06 Jan 2026
Reporting date
02 Jan 2026
SEC evidence
Open document Open filing
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4

FORM 4

Filing date
06 Jan 2026
Reporting date
02 Jan 2026
SEC evidence
Open document Open filing
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4

FORM 4

Filing date
06 Jan 2026
Reporting date
02 Jan 2026
SEC evidence
Open document Open filing
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4

FORM 4

Filing date
06 Jan 2026
Reporting date
02 Jan 2026
SEC evidence
Open document Open filing
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4

FORM 4

Filing date
06 Jan 2026
Reporting date
02 Jan 2026
SEC evidence
Open document Open filing
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4

FORM 4

Filing date
06 Jan 2026
Reporting date
02 Jan 2026
SEC evidence
Open document Open filing
Next action
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4

FORM 4

Filing date
06 Jan 2026
Reporting date
02 Jan 2026
SEC evidence
Open document Open filing
Next action
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4

FORM 4

Filing date
06 Jan 2026
Reporting date
02 Jan 2026
SEC evidence
Open document Open filing
Next action
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4

FORM 4

Filing date
06 Jan 2026
Reporting date
02 Jan 2026
SEC evidence
Open document Open filing
Next action
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4

FORM 4

Filing date
06 Jan 2026
Reporting date
02 Jan 2026
SEC evidence
Open document Open filing
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4

FORM 4

Filing date
19 Dec 2025
Reporting date
19 Dec 2025
SEC evidence
Open document Open filing
Next action
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SCHEDULE 13G/A File 005-94523

SCHEDULE 13G/A filing

Filing date
05 Dec 2025
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
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3

OWNERSHIP DOCUMENT

Filing date
25 Nov 2025
Reporting date
15 Nov 2025
SEC evidence
Open document Open filing
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425 File 001-41899

425

Filing date
13 Nov 2025
Reporting date
Not listed
SEC evidence
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425 File 001-41899

425

Filing date
13 Nov 2025
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
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4

FORM 4

Filing date
12 Nov 2025
Reporting date
10 Nov 2025
SEC evidence
Open document Open filing
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4

FORM 4

Filing date
03 Nov 2025
Reporting date
30 Oct 2025
SEC evidence
Open document Open filing
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425 File 001-41899

425

Filing date
31 Oct 2025
Reporting date
Not listed
SEC evidence
Open document Open filing
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4

FORM 4

Filing date
29 Oct 2025
Reporting date
28 Oct 2025
SEC evidence
Open document Open filing
Next action
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SCHEDULE 13G/A File 005-94523

SCHEDULE 13G/A filing

Filing date
17 Oct 2025
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
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4

FORM 4

Filing date
18 Sep 2025
Reporting date
16 Sep 2025
SEC evidence
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4

FORM 4

Filing date
15 Sep 2025
Reporting date
12 Sep 2025
SEC evidence
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4

FORM 4

Filing date
12 Sep 2025
Reporting date
10 Sep 2025
SEC evidence
Open document Open filing
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4

FORM 4

Filing date
11 Sep 2025
Reporting date
09 Sep 2025
SEC evidence
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4

FORM 4

Filing date
12 Aug 2025
Reporting date
11 Aug 2025
SEC evidence
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EFFECT File 333-288494

EFFECT filing

Filing date
30 Jul 2025
Reporting date
Not listed
SEC evidence
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424B3 File 333-288494

424B3

Filing date
30 Jul 2025
Reporting date
Not listed
SEC evidence
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SCHEDULE 13G/A File 005-94523

SCHEDULE 13G/A filing

Filing date
29 Jul 2025
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
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CORRESP

CORRESP filing

Filing date
28 Jul 2025
Reporting date
Not listed
SEC evidence
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S-4/A File 333-288494

S-4/A

Filing date
28 Jul 2025
Reporting date
Not listed
SEC evidence
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4

FORM 4

Filing date
25 Jul 2025
Reporting date
25 Jul 2025
SEC evidence
Open document Open filing
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3

FORM 3

Filing date
23 Jul 2025
Reporting date
07 Jul 2025
SEC evidence
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UPLOAD File 333-288494

UPLOAD filing

Filing date
10 Jul 2025
Reporting date
Not listed
SEC evidence
Open document Open filing
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S-4 File 333-288494

S-4

Filing date
02 Jul 2025
Reporting date
Not listed
SEC evidence
Open document Open filing
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11-K File 001-41899

11-K

Filing date
25 Jun 2025
Reporting date
31 Dec 2024
SEC evidence
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4

FORM 4

Filing date
18 Jun 2025
Reporting date
10 Jun 2025
SEC evidence
Open document Open filing
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SCHEDULE 13G File 005-94523

SCHEDULE 13G filing

Filing date
11 Jun 2025
Reporting date
Not listed
SEC evidence
Open document Open filing
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4

FORM 4

Filing date
10 Jun 2025
Reporting date
09 Jun 2025
SEC evidence
Open document Open filing
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4

FORM 4

Filing date
10 Jun 2025
Reporting date
09 Jun 2025
SEC evidence
Open document Open filing
Next action
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SCHEDULE 13G File 005-94523

SCHEDULE 13G filing

Filing date
30 Apr 2025
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
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4

FORM 4

Filing date
29 Apr 2025
Reporting date
29 Apr 2025
SEC evidence
Open document Open filing
Next action
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4

FORM 4

Filing date
28 Apr 2025
Reporting date
24 Apr 2025
SEC evidence
Open document Open filing
Next action
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4

FORM 4

Filing date
28 Apr 2025
Reporting date
24 Apr 2025
SEC evidence
Open document Open filing
Next action
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4

FORM 4

Filing date
28 Apr 2025
Reporting date
24 Apr 2025
SEC evidence
Open document Open filing
Next action
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4

FORM 4

Filing date
28 Apr 2025
Reporting date
24 Apr 2025
SEC evidence
Open document Open filing
Next action
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4

FORM 4

Filing date
28 Apr 2025
Reporting date
24 Apr 2025
SEC evidence
Open document Open filing
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4

FORM 4

Filing date
28 Apr 2025
Reporting date
24 Apr 2025
SEC evidence
Open document Open filing
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4

FORM 4

Filing date
28 Apr 2025
Reporting date
24 Apr 2025
SEC evidence
Open document Open filing
Next action
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4

FORM 4

Filing date
28 Apr 2025
Reporting date
24 Apr 2025
SEC evidence
Open document Open filing
Next action
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4

FORM 4

Filing date
28 Apr 2025
Reporting date
24 Apr 2025
SEC evidence
Open document Open filing
Next action
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4

FORM 4

Filing date
28 Apr 2025
Reporting date
24 Apr 2025
SEC evidence
Open document Open filing
Next action
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4

FORM 4

Filing date
28 Apr 2025
Reporting date
24 Apr 2025
SEC evidence
Open document Open filing
Next action
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4

FORM 4

Filing date
28 Apr 2025
Reporting date
24 Apr 2025
SEC evidence
Open document Open filing
Next action
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4

FORM 4

Filing date
28 Apr 2025
Reporting date
24 Apr 2025
SEC evidence
Open document Open filing
Next action
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4

FORM 4

Filing date
28 Apr 2025
Reporting date
24 Apr 2025
SEC evidence
Open document Open filing
Next action
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S-8 File 333-286724

S-8

Filing date
24 Apr 2025
Reporting date
Not listed
SEC evidence
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4

FORM 4

Filing date
18 Mar 2025
Reporting date
18 Mar 2025
SEC evidence
Open document Open filing
Next action
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DEF 14A File 001-41899

DEF 14A

Filing date
14 Mar 2025
Reporting date
23 Apr 2025
Next action
Verify source filing
4

FORM 4

Filing date
13 Mar 2025
Reporting date
11 Mar 2025
SEC evidence
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ARS File 001-41899

ARS

Filing date
11 Mar 2025
Reporting date
31 Dec 2024
SEC evidence
Open document Open filing
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SCHEDULE 13G/A File 005-94523

SCHEDULE 13G/A filing

Filing date
12 Feb 2025
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
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3

FORM 3

Filing date
03 Feb 2025
Reporting date
22 Jan 2025
SEC evidence
Open document Open filing
Next action
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SCHEDULE 13G/A File 005-94523

SCHEDULE 13G/A filing

Filing date
30 Jan 2025
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
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4

FORM 4

Filing date
27 Jan 2025
Reporting date
24 Jan 2025
SEC evidence
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4

FORM 4

Filing date
24 Jan 2025
Reporting date
24 Jan 2025
SEC evidence
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3

FORM 3

Filing date
22 Jan 2025
Reporting date
06 Jan 2025
SEC evidence
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4

FORM 4

Filing date
19 Nov 2024
Reporting date
19 Nov 2024
SEC evidence
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SC 13G File 005-94523

13G NB BANCORP INC. 093024

Filing date
14 Nov 2024
Reporting date
Not listed
SEC evidence
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SC 13G/A File 005-94523

SC 13G/A filing

Filing date
12 Nov 2024
Reporting date
Not listed
SEC evidence
Open document Open filing
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SC 13G File 005-94523

SC 13G filing

Filing date
08 Nov 2024
Reporting date
Not listed
SEC evidence
Open document Open filing
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SC 13G/A File 005-94523

SC 13G/A filing

Filing date
04 Nov 2024
Reporting date
Not listed
SEC evidence
Open document Open filing
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SC 13G File 005-94523

SC 13G filing

Filing date
22 Oct 2024
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
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4

FORM 4

Filing date
20 Sep 2024
Reporting date
19 Sep 2024
SEC evidence
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4

FORM 4

Filing date
20 Sep 2024
Reporting date
19 Sep 2024
SEC evidence
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3

FORM 3

Filing date
16 Sep 2024
Reporting date
12 Sep 2024
SEC evidence
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4

FORM 4

Filing date
27 Aug 2024
Reporting date
26 Aug 2024
SEC evidence
Open document Open filing
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4

FORM 4

Filing date
06 Aug 2024
Reporting date
02 Aug 2024
SEC evidence
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4

FORM 4

Filing date
02 Aug 2024
Reporting date
02 Aug 2024
SEC evidence
Open document Open filing
Next action
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11-K File 001-41899

11-K

Filing date
27 Jun 2024
Reporting date
31 Dec 2023
SEC evidence
Open document Open filing
Next action
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SC 13G File 005-94523

SC 13G filing

Filing date
21 May 2024
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
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4

FORM 4

Filing date
21 May 2024
Reporting date
15 May 2024
SEC evidence
Open document Open filing
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4

FORM 4

Filing date
16 May 2024
Reporting date
16 May 2024
SEC evidence
Open document Open filing
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4

FORM 4

Filing date
09 May 2024
Reporting date
08 May 2024
SEC evidence
Open document Open filing
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4

FORM 4

Filing date
01 May 2024
Reporting date
29 Apr 2024
SEC evidence
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4

FORM 4

Filing date
30 Apr 2024
Reporting date
26 Apr 2024
SEC evidence
Open document Open filing
Next action
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ARS File 001-41899

ARS

Filing date
12 Apr 2024
Reporting date
31 Dec 2023
SEC evidence
Open document Open filing
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DEFA14A File 001-41899

DEFA14A

Filing date
12 Apr 2024
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
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DEF 14A File 001-41899

DEF 14A

Filing date
12 Apr 2024
Reporting date
22 May 2024
SEC evidence
Open document Open filing
Next action
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4

FORM 4

Filing date
22 Mar 2024
Reporting date
11 Mar 2024
SEC evidence
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4

FORM 4

Filing date
19 Mar 2024
Reporting date
19 Mar 2024
SEC evidence
Open document Open filing
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4

FORM 4

Filing date
12 Mar 2024
Reporting date
06 Mar 2024
SEC evidence
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4/A

FORM 4/A

Filing date
11 Mar 2024
Reporting date
08 Mar 2024
SEC evidence
Open document Open filing
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4

FORM 4

Filing date
11 Mar 2024
Reporting date
08 Mar 2024
SEC evidence
Open document Open filing
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4

FORM 4

Filing date
06 Mar 2024
Reporting date
05 Mar 2024
SEC evidence
Open document Open filing
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4

FORM 4

Filing date
05 Mar 2024
Reporting date
04 Mar 2024
SEC evidence
Open document Open filing
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4

FORM 4

Filing date
05 Mar 2024
Reporting date
04 Mar 2024
SEC evidence
Open document Open filing
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4

FORM 4

Filing date
05 Mar 2024
Reporting date
01 Mar 2024
SEC evidence
Open document Open filing
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3

FORM 3

Filing date
08 Feb 2024
Reporting date
01 Feb 2024
SEC evidence
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4

FORM 4

Filing date
17 Jan 2024
Reporting date
11 Jan 2024
SEC evidence
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4

FORM 4

Filing date
12 Jan 2024
Reporting date
11 Jan 2024
SEC evidence
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4

FORM 4

Filing date
10 Jan 2024
Reporting date
08 Jan 2024
SEC evidence
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4

FORM 4

Filing date
08 Jan 2024
Reporting date
05 Jan 2024
SEC evidence
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4

FORM 4

Filing date
05 Jan 2024
Reporting date
04 Jan 2024
SEC evidence
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4

FORM 4

Filing date
03 Jan 2024
Reporting date
02 Jan 2024
SEC evidence
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4

FORM 4

Filing date
02 Jan 2024
Reporting date
28 Dec 2023
SEC evidence
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4

FORM 4

Filing date
02 Jan 2024
Reporting date
28 Dec 2023
SEC evidence
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4

FORM 4

Filing date
29 Dec 2023
Reporting date
28 Dec 2023
SEC evidence
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8-K File 001-41899

NB BANCORP, INC. FORM 8-K DECEMBER 27, 2023

Filing date
27 Dec 2023
Reporting date
27 Dec 2023
Next action
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3

FORM 3

Filing date
27 Dec 2023
Reporting date
27 Dec 2023
SEC evidence
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3

FORM 3

Filing date
27 Dec 2023
Reporting date
27 Dec 2023
SEC evidence
Open document Open filing
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3

FORM 3

Filing date
27 Dec 2023
Reporting date
27 Dec 2023
SEC evidence
Open document Open filing
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3

FORM 3

Filing date
27 Dec 2023
Reporting date
27 Dec 2023
SEC evidence
Open document Open filing
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3

FORM 3

Filing date
27 Dec 2023
Reporting date
27 Dec 2023
SEC evidence
Open document Open filing
Next action
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3

FORM 3

Filing date
27 Dec 2023
Reporting date
27 Dec 2023
SEC evidence
Open document Open filing
Next action
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3

FORM 3

Filing date
27 Dec 2023
Reporting date
27 Dec 2023
SEC evidence
Open document Open filing
Next action
Verify source filing
3

FORM 3

Filing date
27 Dec 2023
Reporting date
27 Dec 2023
SEC evidence
Open document Open filing
Next action
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3

FORM 3

Filing date
27 Dec 2023
Reporting date
27 Dec 2023
SEC evidence
Open document Open filing
Next action
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3

FORM 3

Filing date
27 Dec 2023
Reporting date
27 Dec 2023
SEC evidence
Open document Open filing
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3

FORM 3

Filing date
27 Dec 2023
Reporting date
27 Dec 2023
SEC evidence
Open document Open filing
Next action
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3

FORM 3

Filing date
27 Dec 2023
Reporting date
27 Dec 2023
SEC evidence
Open document Open filing
Next action
Verify source filing
3

FORM 3

Filing date
27 Dec 2023
Reporting date
27 Dec 2023
SEC evidence
Open document Open filing
Next action
Verify source filing
3

FORM 3

Filing date
27 Dec 2023
Reporting date
27 Dec 2023
SEC evidence
Open document Open filing
Next action
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3

FORM 3

Filing date
27 Dec 2023
Reporting date
27 Dec 2023
SEC evidence
Open document Open filing
Next action
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3

FORM 3

Filing date
27 Dec 2023
Reporting date
27 Dec 2023
SEC evidence
Open document Open filing
Next action
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3

FORM 3

Filing date
27 Dec 2023
Reporting date
27 Dec 2023
SEC evidence
Open document Open filing
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3

FORM 3

Filing date
27 Dec 2023
Reporting date
27 Dec 2023
SEC evidence
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S-8 File 333-276286

NB BANCORP, INC. FORM S-8 REGISTRATION STATEMENT DECEMBER 27, 2023

Filing date
27 Dec 2023
Reporting date
Not listed
SEC evidence
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3

FORM 3

Filing date
27 Dec 2023
Reporting date
27 Dec 2023
SEC evidence
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3

FORM 3

Filing date
27 Dec 2023
Reporting date
27 Dec 2023
SEC evidence
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CERT File 001-41899

CERT filing

Filing date
27 Dec 2023
Reporting date
Not listed
SEC evidence
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8-A12B File 001-41899

NB BANCORP, INC. FORM 8-A DECEMBER 27, 2023

Filing date
27 Dec 2023
Reporting date
Not listed
SEC evidence
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424B3 File 333-272567

424B3

Filing date
20 Oct 2023
Reporting date
Not listed
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424B3 File 333-272567

424B3

Filing date
20 Oct 2023
Reporting date
Not listed
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EFFECT File 333-272567

EFFECT filing

Filing date
12 Oct 2023
Reporting date
Not listed
SEC evidence
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8-K File 333-272567

FORM 8-K

Filing date
12 Oct 2023
Reporting date
12 Oct 2023
SEC evidence
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CORRESP

CORRESP filing

Filing date
10 Oct 2023
Reporting date
Not listed
SEC evidence
Open document Open filing
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CORRESP

CORRESP filing

Filing date
10 Oct 2023
Reporting date
Not listed
SEC evidence
Open document Open filing
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S-1/A File 333-272567

S-1/A

Filing date
10 Oct 2023
Reporting date
Not listed
SEC evidence
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S-1/A File 333-272567

S-1/A

Filing date
02 Oct 2023
Reporting date
Not listed
SEC evidence
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S-1/A File 333-272567

S-1/A

Filing date
29 Sep 2023
Reporting date
Not listed
SEC evidence
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S-1/A File 333-272567

S-1/A

Filing date
01 Sep 2023
Reporting date
Not listed
SEC evidence
Open document Open filing
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CORRESP

CORRESP filing

Filing date
08 Aug 2023
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
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S-1/A File 333-272567

S-1/A

Filing date
08 Aug 2023
Reporting date
Not listed
SEC evidence
Open document Open filing
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UPLOAD

UPLOAD filing

Filing date
01 Aug 2023
Reporting date
Not listed
SEC evidence
Open document Open filing
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CORRESP

CORRESP filing

Filing date
27 Jul 2023
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
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S-1/A File 333-272567

S-1/A

Filing date
27 Jul 2023
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
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UPLOAD

UPLOAD filing

Filing date
06 Jul 2023
Reporting date
Not listed
SEC evidence
Open document Open filing
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S-1 File 333-272567

FORM S-1

Filing date
09 Jun 2023
Reporting date
Not listed
SEC evidence
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About this filer

NB Bancorp, Inc. files with the SEC under CIK 0001979330. This page aggregates EDGAR filings and related ownership activity.

Industry: Savings Institutions, Not Federally Chartered.

FAQ

What is a CIK?
A Central Index Key (CIK) is a unique identifier assigned by the SEC to each filer.
Why are some filings missing?
New filings appear as the SEC updates EDGAR, and older records can vary by availability.
How often is this page updated?
Updates follow new EDGAR submissions and periodic data refreshes.
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