Quick Takeaways
- NBBK - NB Bancorp, Inc. has 27 insiders with reported activity on this page.
- Net insider value flow over the last year: +$1,057,046.
- Recent transaction rows are available for direct filing-level review.
Insider Transactions Reported by 27 Insiders of NB Bancorp, Inc.
- Symbol
- NBBK on Nasdaq
- Location
- Needham, MA
What Changed
- Buy value: $1,057,046; sell value: $0.
- Net share flow: +56,188.
Why This Matters
- This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
- Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.
Source Evidence
Filed on Form 4
See Original Filing
Issuer insider activity is sourced from SEC Forms 3, 4, and 5.
Insider trading overview
Last 12 monthsNet insider flow leans to buying over the last 12 months. Net value: +$1,057,046.
Buys
$1,057,046
Shares: 56,188
Insiders: 6
Sells
$0
Shares: 0
Insiders: 0
Net
+$1,057,046
Shares: +56,188
Insiders: 6
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 31,000 | 0 | $612,589 | $0 | +$612,589 |
| 3-6 | 2,000 | 0 | $41,743 | $0 | +$41,743 |
| 6-9 | 9,688 | 0 | $176,902 | $0 | +$176,902 |
| 9-12 | 13,500 | 0 | $225,813 | $0 | +$225,813 |
NB Bancorp, Inc. executives and other stock owners filed with the SEC include:
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Joseph P. Campanelli | President & CEO, Director, Chairman of the Board | $9,549,629 | +$316,716 | +3.4% | Mixed | 24 Apr 2026 |
| Hope Pascucci | Director | $4,460,858 | +$473,983 | +12% | Mixed | 24 Apr 2026 |
| William Darcey | Director | $3,426,803 | +$86,499 | +2.6% | Median | 24 Apr 2026 |
| Christopher R. Lynch | Director | $3,306,346 | Median | 24 Apr 2026 | ||
| Francis Orfanello | Director | $2,836,977 | Mixed | 02 Jan 2026 | ||
| Jean-Pierre Lapointe | SEVP and CFO | $2,366,579 | +$20,420 | +0.87% | Mixed | 09 Mar 2026 |
| Mark Whalen | Director | $2,267,953 | Median | 24 Apr 2026 | ||
| Mary Susan Elliott | Director | $2,197,718 | Filing P/S | 02 Jan 2026 | ||
| Paul J. Ayoub | Director | $1,932,648 | Mixed | 02 Jan 2026 | ||
| Joseph R. Nolan Jr. | Director | $1,848,660 | Median | 24 Apr 2026 | ||
| Kenneth C. Montgomery | Director | $1,793,899 | +$92,200 | +5.4% | Median | 24 Apr 2026 |
| Angela Jackson | Director | $1,712,042 | Median | 24 Apr 2026 | ||
| Muhammad Raza | Director | $1,612,224 | Mixed | 02 Jan 2026 | ||
| Christine Roberts | SEVP and COO | $1,497,676 | Median | 24 Apr 2026 | ||
| Salvatore J. Rinaldi | EVP and COO | $1,260,051 | Mixed | 29 Apr 2024 | ||
| James J. White | EVP, Chief Administrative Offc | $1,185,270 | Mixed | 25 Feb 2026 | ||
| Joseph B. Reilly | Director | $1,055,927 | Mixed | 02 Jan 2026 | ||
| Paul A. Evangelista | EVP, Dir Spec. Bank. Ctr. | $1,014,710 | +$67,229 | +7.1% | Mixed | 25 Feb 2026 |
| Stephanie Maiona | EVP, Dir CRE Banking | $994,229 | Mixed | 25 Feb 2026 | ||
| Peter Bakkala | EVP and Chief Risk Officer | $540,157 | Mixed | 10 Jun 2025 | ||
| Kevin Henkin | EVP, Chief Credit Officer | $336,727 | Mixed | 25 Feb 2026 | ||
| James B. Daley | EVP - Dir C&I Banking | $318,910 | Mixed | 25 Feb 2026 | ||
| Matthew Richardson | EVP, Treasury & Cash Mgmt Svcs | $269,480 | Mixed | 25 Feb 2026 | ||
| Danielle Walsh | EVP and CFO | $202,499 | Mixed | 27 Dec 2023 | ||
| Matthew G. Schulman | EVP, President Needham Prv Bnk | $138,343 | Mixed | 09 Mar 2026 | ||
| Michael J. Sinclair | EVP, Rsdntl & Cons Lend | $103,167 | Mixed | 27 Dec 2023 | ||
| Margaret Watson | SVP, General Counsel | $67,500 | Mixed | 27 Dec 2023 |
Top shareholders of NB Bancorp, Inc. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| Needham Bank Employee Stock Ownership Plan Trust |
13D/G
|
— |
7.5%
|
3,416,458
|
$67,543,375 | $0 | 31 Dec 2025 | |
| BlackRock, Inc. |
13F
13D/G
|
Company |
6.7%
from 13D/G
|
3,084,222
|
$64,984,549 | — | 31 Mar 2026 | |
| Pertento Partners LLP |
13F
13D/G
|
Company |
4.6%
from 13D/G
|
2,206,666
|
$46,494,453 | — | 31 Mar 2026 | |
| VANGUARD CAPITAL MANAGEMENT LLC |
13F
|
Company |
3.8%
|
1,703,928
|
$35,901,763 | — | 31 Mar 2026 | |
| AltraVue Capital, LLC |
13F
|
Company |
2.9%
|
1,304,080
|
$27,476,966 | — | 31 Mar 2026 | |
| STATE STREET CORP |
13F
|
Company |
2.9%
|
1,293,538
|
$27,254,846 | — | 31 Mar 2026 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
2.5%
|
1,098,930
|
$23,159,188 | — | 31 Mar 2026 | |
| WELLINGTON MANAGEMENT GROUP LLP |
13F
|
Company |
1.6%
|
710,000
|
$14,959,700 | — | 31 Mar 2026 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
1.6%
|
691,668
|
$14,573,447 | — | 31 Mar 2026 | |
| Tieton Capital Management, LLC |
13F
|
Company |
1.2%
|
553,570
|
$11,664,000 | — | 31 Mar 2026 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
|
Company |
1.2%
|
522,384
|
$11,005,796 | — | 31 Mar 2026 | |
| Nuveen, LLC |
13F
|
Company |
1.1%
|
488,033
|
$10,282,856 | — | 31 Mar 2026 | |
| Joseph P. Campanelli |
3/4/5
|
President & CEO, Director, Chairman of the Board |
1.1%
|
478,937
|
$9,549,629 | +$316,716 | 24 Apr 2026 | |
| HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC |
13F
|
Company |
1%
|
450,772
|
$9,497,766 | — | 31 Mar 2026 | |
| FMR LLC |
13F
|
Company |
0.98%
|
437,725
|
$9,222,866 | — | 31 Mar 2026 | |
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13F
|
Company |
0.87%
|
386,132
|
$8,135,801 | — | 31 Mar 2026 | |
| TWO SIGMA INVESTMENTS, LP |
13F
|
Company |
0.83%
|
371,807
|
$7,833,973 | — | 31 Mar 2026 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.75%
|
335,360
|
$7,066,034 | — | 31 Mar 2026 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
0.71%
|
318,365
|
$6,707,951 | — | 31 Mar 2026 | |
| SEI INVESTMENTS CO |
13F
|
Company |
0.68%
|
302,181
|
$6,366,955 | — | 31 Mar 2026 | |
| MORGAN STANLEY |
13F
|
Company |
0.63%
|
279,870
|
$5,896,862 | — | 31 Mar 2026 | |
| Legato Capital Management LLC |
13F
|
Company |
0.62%
|
276,070
|
$5,816,795 | — | 31 Mar 2026 | |
| RENAISSANCE TECHNOLOGIES LLC |
13F
|
Company |
0.59%
|
263,906
|
$5,560,499 | — | 31 Mar 2026 | |
| AMERICAN CENTURY COMPANIES INC |
13F
|
Company |
0.59%
|
263,656
|
$5,555,232 | — | 31 Mar 2026 | |
| NEW YORK STATE COMMON RETIREMENT FUND |
13F
|
Company |
0.58%
|
260,585
|
$5,490,526 | — | 31 Mar 2026 | |
| VANGUARD FIDUCIARY TRUST CO |
13F
|
Company |
0.57%
|
254,038
|
$5,352,581 | — | 31 Mar 2026 | |
| Hope Pascucci |
3/4/5
|
Director |
0.5%
|
222,402
|
$4,460,858 | +$473,983 | 24 Apr 2026 | |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC |
13F
|
Company |
0.47%
|
208,394
|
$4,390,862 | — | 31 Mar 2026 | |
| HENNESSY ADVISORS INC |
13F
|
Company |
0.4%
|
180,000
|
$3,792,600 | — | 31 Mar 2026 | |
| Qube Research & Technologies Ltd |
13F
|
Company |
0.39%
|
175,066
|
$3,688,641 | — | 31 Mar 2026 | |
| Empowered Funds, LLC |
13F
|
Company |
0.38%
|
168,394
|
$3,548,062 | — | 31 Mar 2026 | |
| William Darcey |
3/4/5
|
Director |
0.37%
|
162,639
|
$3,426,803 | +$86,499 | 24 Apr 2026 | |
| MILLENNIUM MANAGEMENT LLC |
13F
|
Company |
0.36%
|
158,243
|
$3,334,180 | — | 31 Mar 2026 | |
| Christopher R. Lynch |
3/4/5
|
Director |
0.35%
|
156,922
|
$3,306,346 | — | 24 Apr 2026 | |
| PANAGORA ASSET MANAGEMENT INC |
13F
|
Company |
0.34%
|
150,096
|
$3,162,523 | — | 31 Mar 2026 | |
| Bank of New York Mellon Corp |
13F
|
Company |
0.33%
|
148,066
|
$3,119,750 | — | 31 Mar 2026 | |
| FIRST TRUST ADVISORS LP |
13F
|
Company |
0.31%
|
140,264
|
$2,955,362 | — | 31 Mar 2026 | |
| Francis Orfanello |
3/4/5
|
Director |
0.32%
|
143,140
|
$2,836,977 | — | 02 Jan 2026 | |
| INTERNATIONAL ASSETS INVESTMENT MANAGEMENT, LLC |
13F
|
Company |
0.29%
|
131,013
|
$2,784,026 | — | 31 Mar 2026 | |
| AQR CAPITAL MANAGEMENT LLC |
13F
|
Company |
0.29%
|
128,821
|
$2,714,262 | — | 31 Mar 2026 | |
| Financial Engines Advisors L.L.C. |
13F
|
Company |
0.28%
|
125,723
|
$2,648,984 | — | 31 Mar 2026 | |
| ALLIANCEBERNSTEIN L.P. |
13F
|
Company |
0.29%
|
130,219
|
$2,580,941 | — | 31 Mar 2026 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
0.26%
|
116,371
|
$2,451,937 | — | 31 Mar 2026 | |
| Jean-Pierre Lapointe |
3/4/5
|
SEVP and CFO |
0.26%
|
116,128
|
$2,366,579 | +$20,420 | 09 Mar 2026 | |
| MANGROVE PARTNERS IM, LLC |
13F
|
Company |
0.25%
|
111,356
|
$2,346,271 | — | 31 Mar 2026 | |
| Mark Whalen |
3/4/5
|
Director |
0.24%
|
107,639
|
$2,267,953 | — | 24 Apr 2026 | |
| Mary Susan Elliott |
3/4/5
|
Director |
0.26%
|
117,195
|
$2,197,718 | — | 02 Jan 2026 | |
| Invesco Ltd. |
13F
|
Company |
0.23%
|
101,244
|
$2,133,211 | — | 31 Mar 2026 | |
| Focus Partners Wealth |
13F
|
Company |
0.21%
|
92,809
|
$1,955,475 | — | 31 Mar 2026 | |
| Paul J. Ayoub |
3/4/5
|
Director |
0.22%
|
97,512
|
$1,932,648 | — | 02 Jan 2026 |
Recent Insider Transactions by Companies or Individuals for NB Bancorp, Inc.
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Joseph P. Campanelli | NBBK | Common Stock | Purchase | 0.67% | $48,618 | $19.45 | 2,500 | 374,790 | 24 Apr 2026 | Direct |
| Joseph P. Campanelli | NBBK | Common Stock | Tax liability | -6.14% | -24,371 | 372,290 | 24 Apr 2026 | Direct | ||
| Christine Roberts | NBBK | Common Stock | Tax liability | -4.81% | -3,589 | 71,081 | 24 Apr 2026 | Direct | ||
| Hope Pascucci | NBBK | Common Stock | Purchase | 16.3% | $389,281 | $19.46 | 20,000 | 142,402 | 24 Apr 2026 | Direct |
| Joseph P. Campanelli | NBBK | Common Stock | Purchase | 0.63% | $50,400 | $20.16 | 2,500 | 396,661 | 19 Mar 2026 | Direct |
| Matthew G. Schulman | NBBK | Common Stock | Award | 6,980 | 6,980 | 09 Mar 2026 | Direct | |||
| Jean-Pierre Lapointe | NBBK | Common Stock | Purchase | 0.91% | $20,420 | $20.42 | 1,000 | 110,331 | 09 Mar 2026 | Direct |
| Joseph P. Campanelli | NBBK | Common Stock | Purchase | $62,310 | $20.77 | 3,000 | 3,000 | 06 Mar 2026 | As trustee for trust | |
| Joseph P. Campanelli | NBBK | Common Stock | Purchase | 4.44% | $41,560 | $20.78 | 2,000 | 47,000 | 06 Mar 2026 | By IRA |
| Joseph P. Campanelli | NBBK | Common Stock | Award | 19% | 63,015 | 394,161 | 25 Feb 2026 | Direct | ||
| James J. White | NBBK | Common Stock | Award | 68.7% | 6,874 | 16,874 | 25 Feb 2026 | Direct | ||
| Paul A. Evangelista | NBBK | Common Stock | Award | 25.9% | 6,874 | 33,440 | 25 Feb 2026 | Direct | ||
| Kevin Henkin | NBBK | Common Stock | Award | 343.7% | 6,874 | 8,874 | 25 Feb 2026 | Direct | ||
| Matthew Richardson | NBBK | Common Stock | Award | 13,749 | 13,749 | 25 Feb 2026 | Direct | |||
| Jean-Pierre Lapointe | NBBK | Common Stock | Award | 14.4% | 13,749 | 109,331 | 25 Feb 2026 | Direct | ||
| Christine Roberts | NBBK | Common Stock | Award | 22.6% | 13,749 | 74,670 | 25 Feb 2026 | Direct | ||
| James B. Daley | NBBK | Common Stock | Award | 6,874 | 6,874 | 25 Feb 2026 | Direct | |||
| Stephanie Maiona | NBBK | Common Stock | Award | 6,874 | 6,874 | 25 Feb 2026 | Direct | |||
| Joseph B. Reilly | NBBK | Common Stock | Award | 20% | 2,402 | 14,414 | 02 Jan 2026 | Direct | ||
| Paul J. Ayoub | NBBK | Common Stock | Award | 9.57% | 7,205 | 82,512 | 02 Jan 2026 | Direct | ||
| Mary Susan Elliott | NBBK | Common Stock | Award | 5.51% | 5,524 | 105,761 | 02 Jan 2026 | Direct | ||
| Christopher R. Lynch | NBBK | Common Stock | Award | 8.61% | 7,685 | 96,922 | 02 Jan 2026 | Direct | ||
| Mark Whalen | NBBK | Common Stock | Award | 3.19% | 2,402 | 77,639 | 02 Jan 2026 | Direct | ||
| Kenneth C. Montgomery | NBBK | Common Stock | Award | 5.98% | 4,803 | 85,140 | 02 Jan 2026 | Direct | ||
| Angela Jackson | NBBK | Common Stock | Award | 3.05% | 2,402 | 81,255 | 02 Jan 2026 | Direct | ||
| Joseph R. Nolan Jr. | NBBK | Common Stock | Award | 2.81% | 2,402 | 87,739 | 02 Jan 2026 | Direct | ||
| Muhammad Raza | NBBK | Common Stock | Award | 3.19% | 2,402 | 77,639 | 02 Jan 2026 | Direct | ||
| Hope Pascucci | NBBK | Common Stock | Award | 2% | 2,402 | 122,402 | 02 Jan 2026 | Direct | ||
| Francis Orfanello | NBBK | Common Stock | Award | 4.15% | 5,403 | 135,640 | 02 Jan 2026 | Direct | ||
| William Darcey | NBBK | Common Stock | Award | 2.99% | 2,402 | 82,639 | 02 Jan 2026 | Direct | ||
| Paul A. Evangelista | NBBK | Common Stock | Purchase | 8.14% | $41,743 | $20.87 | 2,000 | 26,566 | 19 Dec 2025 | Direct |
| Christopher R. Lynch | NBBK | Common Stock | Gift | -2.96% | -2,725 | 89,237 | 10 Nov 2025 | Direct | ||
| Christopher R. Lynch | NBBK | Common Stock | Gift | -0.65% | -600 | 91,962 | 30 Oct 2025 | Direct | ||
| Hope Pascucci | NBBK | Common Stock | Purchase | 4.07% | $84,702 | $18.07 | 4,688 | 120,000 | 28 Oct 2025 | Direct |
| Christopher R. Lynch | NBBK | Common Stock | Gift | -0.64% | -600 | 92,562 | 16 Sep 2025 | Direct | ||
| Kenneth C. Montgomery | NBBK | Common Stock | Purchase | 6.64% | $92,200 | $18.44 | 5,000 | 80,337 | 12 Sep 2025 | Direct |
| Christopher R. Lynch | NBBK | Common Stock | Gift | -0.64% | -600 | 93,162 | 10 Sep 2025 | Direct | ||
| Christopher R. Lynch | NBBK | Common Stock | Gift | -0.64% | -600 | 93,762 | 09 Sep 2025 | Direct | ||
| William Darcey | NBBK | Common Stock | Purchase | 6.65% | $86,499 | $17.30 | 5,000 | 80,237 | 11 Aug 2025 | Direct |
| Paul A. Evangelista | NBBK | Common Stock | Purchase | 2.08% | $9,195 | $18.39 | 500 | 24,566 | 25 Jul 2025 | Direct |
| Peter Bakkala | NBBK | Common Stock | Discretionary transaction in accordance with Rule 16b-3(f) resulting in acquisition or disposition of issuer securities | 76% | 13,389 | 31,010 | 10 Jun 2025 | By 401(k) | ||
| Paul A. Evangelista | NBBK | Common Stock | Purchase | 4.34% | $16,291 | $16.29 | 1,000 | 24,066 | 09 Jun 2025 | Direct |
| Joseph P. Campanelli | NBBK | Common Stock | Purchase | 12.5% | $81,450 | $16.29 | 5,000 | 45,000 | 09 Jun 2025 | By IRA |
| Joseph P. Campanelli | NBBK | Common Stock | Purchase | 0.61% | $32,378 | $16.19 | 2,000 | 331,146 | 09 Jun 2025 | Direct |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.