NB Bancorp, Inc.

NBBKNASDAQ

$22.57+0.30 (+1.35%)as of Oct 2, 2026

Legend

Insider buy

Insider sell

Congress buy

Congress sell

Hedge Funds
bought vs soldGreener markers show more buyers; redder markers show more sellers.

Company share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size.

Insider buy
Insider sell
Congress buy
Congress sell
Hedge Funds bought vs sold

Share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size. Greener fund markers mean more buyers.

Insider Buy
Insider Sell
Congress Buy
Congress Sell
Hedge funds bought vs sold
BuybackNo changeNet dilution

NB Bancorp, Inc. price and activity chart data

Showing the 1Y range: Oct 2, 2025 to Oct 2, 2026. Price (+28.2%). 0 insider or congressional trades plotted in this window as 0 markers; nearby trades of the same kind are grouped.

Transactions plotted on the price chart
Date	Category	Person	Role	Action	Amount	Change in holding

Largest institutional holders

13F · Q2 2026

Fund	% of company held	Value	% of portfolio	Quarterly activity
BlackRock, Inc.	7.60%	$70.4M	0.00%	Not reported
Vanguard Capital Management LLC	3.81%	$35.3M	0.00%	Not reported
AltraVue Capital, LLC	3.78%	$35M	2.52%	Add 26.92%
Pertento Partners LLP	3.37%	$31.2M	1.68%	Reduce 33.12%
State Street Corp	3.36%	$31.1M	0.00%	Not reported
Geode Capital Management, LLC	2.63%	$24.4M	0.00%	Not reported
Dimensional Fund Advisors LP	1.72%	$15.9M	0.00%	Not reported
Goldman Sachs Group Inc	1.31%	$12.1M	0.00%	Not reported
Hotchkis & Wiley Capital Management LLC	1.14%	$10.6M	0.03%	Add 11.18%
Nuveen, LLC	1.14%	$10.5M	0.00%	Not reported
FMR LLC	1.13%	$10.5M	0.00%	Not reported
Vanguard Portfolio Management LLC	0.91%	$8.39M	0.00%	Not reported
Legato Capital Management LLC	0.84%	$7.74M	0.64%	Add 32.61%
Northern Trust Corp	0.82%	$7.62M	0.00%	Not reported
New York State Common Retirement Fund	0.79%	$7.31M	0.01%	Not reported
Charles Schwab Investment Management Inc	0.73%	$6.73M	0.00%	Not reported
Citadel Advisors LLC	0.66%	$6.12M	0.00%	Not reported
Two Sigma Investments, LP	0.63%	$5.85M	0.00%	Not reported
American Century Companies Inc	0.60%	$5.53M	0.00%	Not reported
Vanguard Fiduciary Trust Co	0.58%	$5.37M	0.00%	Not reported
Morgan Stanley	0.52%	$4.84M	0.00%	Not reported
Bridgeway Capital Management, LLC	0.51%	$4.68M	0.08%	Not reported
Empowered Funds, LLC	0.41%	$3.83M	0.02%	Add 7.72%
Hennessy Advisors Inc	0.41%	$3.76M	0.12%	Reduce 1.11%
Bank of New York Mellon Corp	0.39%	$3.62M	0.00%	Not reported
D. E. Shaw & Co., Inc.	0.34%	$3.17M	0.00%	Not reported
Sei Investments Co	0.32%	$3.01M	0.00%	Not reported
First Trust Advisors LP	0.32%	$3.01M	0.00%	Add 1.42%
UBS Group AG	0.32%	$2.97M	0.00%	Not reported
Renaissance Technologies LLC	0.30%	$2.78M	0.00%	Not reported
International Assets Investment Management, LLC	0.30%	$2.83M	0.17%	Not reported
Alliancebernstein L.P.	0.30%	$2.74M	0.00%	Not reported
Panagora Asset Management Inc	0.30%	$2.73M	0.01%	Not reported
Qube Research & Technologies Ltd	0.29%	$2.69M	0.00%	Not reported
Financial Engines Advisors L.L.C.	0.29%	$2.68M	0.00%	Add 0.85%
Marshall Wace, LLP	0.28%	$2.6M	0.00%	Not reported
AQR Capital Management LLC	0.27%	$2.46M	0.00%	Not reported
Mangrove Partners Im, LLC	0.25%	$2.35M	0.15%	Not reported
Invesco Ltd.	0.22%	$2.07M	0.00%	Not reported
Oppenheimer & Close, LLC	0.19%	$1.75M	1.11%	Not reported
Millennium Management LLC	0.19%	$1.72M	0.00%	Not reported
Integrated Wealth Concepts LLC	0.18%	$1.66M	0.01%	Not reported
Swiss National Bank	0.18%	$1.63M	0.00%	Not reported
Credit Agricole S A	0.16%	$1.48M	0.00%	Not reported
Mackenzie Financial Corp	0.15%	$1.43M	0.00%	Not reported
Creative Planning	0.15%	$1.42M	0.00%	Not reported
Round Rock Advisors LLC	0.15%	$1.41M	0.18%	Add 0.09%
Focus Partners Wealth	0.15%	$1.39M	0.00%	Not reported
Raffles Associates LP	0.15%	$1.35M	0.59%	Add 328.59%
BNP Paribas Financial Markets	0.14%	$1.32M	0.00%	Not reported

50 of 152 holders

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