Companies / NB Bancorp, Inc.
NB Bancorp, Inc.
Nasdaq: NBBKCIK 1979330NEEDHAM, MA
Financials
Ownership
43.8M shares outstanding · as of Jul 31, 2026
Ownership
| Insiders | 4.00% | 1,752,674 |
| 10%+ / strategic | 7.02% | 3,074,812 |
| Institutions | 51.85% | 22,721,464 |
| Public float | 37.13% | 16,269,540 |
% of common shares outstanding (exact, from the latest cover-page filing). Institutions are quarterly 13F snapshots; insiders reflect current officers & directors.
Insiders 22
View all →| Insider | % of shares | Shares |
|---|---|---|
Campanelli Joseph PCEOPresident & CEO · Director | 0.98% | 427,790 |
Orfanello FrancisDirector | 0.31% | 135,640 |
Pascucci HopeDirector | 0.28% | 122,402 |
Lapointe Jean-PierreSEVP and CFO | 0.25% | 110,331 |
Elliott Mary SusanDirector | 0.24% | 107,195 |
Lynch Christopher R.Director | 0.22% | 96,922 |
Montgomery Kenneth C.Director | 0.19% | 85,140 |
Nolan Joseph R JrDirector | 0.19% | 82,821 |
Darcey WilliamDirector | 0.19% | 82,639 |
Ayoub Paul J.Director | 0.19% | 82,512 |
Institutional holders 166
View all →| Holder | Value | % of shares |
|---|---|---|
| $70.40M | 7.60% | |
| $46.45M | 5.35% | |
| $45.61M | 5.25% | |
| $31.10M | 3.36% | |
| $29.16M | 3.36% | |
| $23.16M | 2.51% | |
| $13.74M | 1.58% | |
| $11.77M | 1.36% | |
| $9.50M | 1.03% | |
| $7.83M | 0.85% |
Activity
Jun 30, 2026View all →
InsidersInstitutions
Who's accumulating and trimming this stock (13F).| Date | Actor | Action | Security | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|---|
| Q2 2026 as of | State Street Corporation 13F manager | Add | Common stock | $7.55M | +357K +32.07% | 1,471,766 3.36% of shares | medium |
| Q1 2026 as of | Hotchkis and Wiley Capital Management, LLC 13F manager | Trim | Common stock | $-5.29M | -251K -35.79% | 450,772 1.03% of shares | medium |
| Q1 2026 as of | Marshall Wace, LLP 13F manager | Exit | Common stock | $-4.98M | -252K -100.00% | 0 | low |
| Q2 2026 as of | BlackRock, Inc. 13F manager | Add | Common stock | $4.81M | +228K +7.34% | 3,331,544 7.60% of shares | low |
| Q1 2026 as of | EJF Capital LP 13F manager | Trim | Common stock | $-2.81M | -134K -76.31% | 41,457 0.09% of shares | low |
| Q1 2026 as of | Geode Capital Management, LLC 13F manager | Add | Common stock | $2.79M | +132K +13.68% | 1,098,930 2.51% of shares | low |
| Q1 2026 as of | Two Sigma Investments, LP 13F manager | Add | Common stock | $2.51M | +119K +47.05% | 371,807 0.85% of shares | low |
| Q1 2026 as of | AllianceBernstein L.P. 13F manager | Trim | Common stock | $-2.46M | -124K -48.78% | 130,219 0.30% of shares | low |
5%+ ownership events
Schedule 13D / 13G
| Filer | Stance | % of class |
|---|---|---|
| Vanguard Group Inc | Passive13G/A | — |
| Vanguard Group Inc | Passive13G | — |
| Needham Bank Employee Stock Ownership Plan Trust | Passive13G | — |
Securities
via CUSIP / OpenFIGI
| Symbol | Type | CUSIP |
|---|---|---|
| NBBK | — | 63945M107 |