NBBK NB Bancorp, Inc.: institutional ownership and insider trading
175 funds reported holding $529M of NB Bancorp, Inc. in their latest 13F filings; in Q2 2026 funds net sold $13.5M, with 12 new positions and 25 funds selling out; over the last 12 months insiders bought $844K and sold $45.9K on the open market.
NBBK revenue and earnings
- Quarter ended Jun 30, 2026: revenue n/a, net income $21.1M, EPS 0.53
- Quarter ended Mar 31, 2026: revenue n/a, net income $15.0M, EPS 0.36
- Quarter ended Dec 31, 2025: revenue n/a, net income $7.71M, EPS 0.19
- Quarter ended Sep 30, 2025: revenue n/a, net income $15.4M, EPS 0.43
Famous investors holding NBBK
- Ken Griffin (Citadel Advisors): $7.50M, 0.0% of the portfolio
- Two Sigma (Two Sigma Investments): $5.85M, 0.0% of the portfolio
- D. E. Shaw (D. E. Shaw & Co.): $3.17M, 0.0% of the portfolio
- Renaissance Technologies (Renaissance Technologies): $2.78M, 0.0% of the portfolio
- Izzy Englander (Millennium Management): $1.72M, 0.0% of the portfolio
Largest institutional holders of NBBK
- BlackRock, Inc. (BLK) — $70.4M
- VANGUARD GROUP INC — $45.6M
- VANGUARD CAPITAL MANAGEMENT LLC — $35.3M
- AltraVue Capital, LLC — $35.0M
- Pertento Partners LLP — $31.2M
- STATE STREET CORP (STT, STT-PG) — $31.1M
- GEODE CAPITAL MANAGEMENT, LLC — $24.4M
- DIMENSIONAL FUND ADVISORS LP — $15.9M
- GOLDMAN SACHS GROUP INC (GS, GSCE, GS-PA, GS-PC, GS-PD) — $12.1M
- Tieton Capital Management, LLC — $11.6M
Recent NBBK insider trades
- Aug 20, 2026: Campanelli Joseph P bought 2,000 shares ($43.5K)
- Aug 20, 2026: Lapointe Jean-Pierre bought 200 shares ($4.36K)
- Aug 14, 2026: Henkin Kevin sold 2,000 shares ($45.9K)
- May 15, 2026: Campanelli Joseph P bought 3,000 shares ($57.6K)
5%+ owners
- Needham Bank Employee Stock Ownership Plan Trust: 7.5% (Schedule 13G, filed Feb 13, 2026)
- BlackRock, Inc.: 6.7% (Schedule 13G/A, filed Oct 17, 2025)
Who owns the most NBBK stock?
The largest institutional holders of NB Bancorp, Inc. in the latest 13F filings are BlackRock, Inc. (BLK) ($70.4M), VANGUARD GROUP INC ($45.6M), VANGUARD CAPITAL MANAGEMENT LLC ($35.3M).
Are insiders buying or selling NBBK?
Over the last 12 months insiders bought $844K and sold $45.9K of NB Bancorp, Inc. stock on the open market (SEC Form 4).
Which famous investors own NBBK?
Ken Griffin, Two Sigma, D. E. Shaw, Renaissance Technologies, Izzy Englander.
Which ETFs hold NBBK?
7 ETFs and mutual funds hold it among their top 100 positions, including HISFX, FDM, VSFAX, AFMCX.