NB Bancorp Top Shareholders
| # | Holder | Shares | % of Shares Out | Change | Filing Date |
|---|---|---|---|---|---|
| 1 |
Needham Bank ESOP
|
3.340m | 7.62% | -76.701k | Mar 06 2026 |
| 2 |
BlackRock Institutional Trust Company, N.A.
|
2.654m | 6.06% | -37.180k | Mar 31 2026 |
| 3 |
Pertento Partners LLP
|
2.207m | 5.04% | -137.110k | Mar 31 2026 |
| 4 |
Vanguard Capital Management, LLC
|
1.704m | 3.89% | +1.704m | Mar 31 2026 |
| 5 |
AltraVue Capital, LLC.
|
1.304m | 2.98% | +611.080k | Mar 31 2026 |
|
1
Needham Bank ESOP
|
7.62%
3.340m
|
|
2
BlackRock Institutional Trust Company, N.A.
|
6.06%
2.654m
|
|
3
Pertento Partners LLP
|
5.04%
2.207m
|
|
4
Vanguard Capital Management, LLC
|
3.89%
1.704m
|
|
5
AltraVue Capital, LLC.
|
2.98%
1.304m
|
| The largest shareholders show who really holds influence: big institutional owners shape a stock's liquidity, and building or cutting positions can move the price. | |
| The 5 largest shareholders together hold 25.58% of NB Bancorp, with Needham Bank ESOP the biggest at 7.62%, followed by BlackRock Institutional Trust Company, N.A. (6.06%) and Pertento Partners LLP (5.04%). |
Recent NB Bancorp Insider Transactions
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| Date | Insider & Role | Type | Price | Quantity | Volume |
|---|---|---|---|---|---|
| Sep 30 2026 |
John Mitchell
CEO
|
Purchases
|
$182.45 | + 15,000 | $2,736,750 |
| Sep 27 2026 |
Sarah Chen
CFO
|
Sales
|
$179.80 | - 8,500 | $1,528,300 |
| Sep 23 2026 |
Robert Williams
COO
|
Purchases
|
$175.20 | + 12,000 | $2,102,400 |
| Sep 18 2026 |
Emily Rodriguez
Director
|
Sales
|
$181.30 | - 5,200 | $942,760 |
| Sep 12 2026 |
Michael Thompson
SVP Operations
|
Purchases
|
$170.50 | + 20,000 | $3,410,000 |
| Sep 05 2026 |
Lisa Park
General Counsel
|
Sales
|
$177.90 | - 6,800 | $1,209,720 |
| No transactions found for this filter. | |||||
|
John Mitchell
PURCHASES
|
Sep 30 2026
$182.45
|
|
Sarah Chen
SALES
|
Sep 27 2026
$179.80
|
|
Robert Williams
PURCHASES
|
Sep 23 2026
$175.20
|
|
Emily Rodriguez
SALES
|
Sep 18 2026
$181.30
|
|
Michael Thompson
PURCHASES
|
Sep 12 2026
$170.50
|
|
Lisa Park
SALES
|
Sep 05 2026
$177.90
|
| No transactions found for this filter. | |
| Insider transactions show you what executives, directors and major shareholders do with their own stock: people who know the company from the inside. Buys are the most telling signal, because insiders invest their own money. Sells are harder to read, since they can also be driven by taxes, diversification or expiring option programs. |
NB Bancorp Short interest
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| Short interest shows what share of a stock's freely tradable shares (float) is currently sold short, meaning held by investors betting on falling prices. A high or rising level can be read two ways: it reflects the skepticism of many market participants, but also carries upside potential. Because if the stock rises, short sellers have to buy back, which can push the price up even further. This effect is called a short squeeze. | |
| The short interest in NB Bancorp has held steady at around 4.1% of the float over the past 12 months. Short sellers' positioning has barely changed in this period. |
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