NBBK
insider transactionsNB Bancorp, Inc. — buys & sells by directors, officers and 10% owners A shareholder owning more than 10% of the company. Must report trades, but usually a weaker signal than an officer or director. (SEC Form 4).
Cluster buy signal: Multiple insiders at the same company buying around the same time — often a stronger signal than a single buy. 3 different insiders made open-market purchases in the last 365 days, totalling $774.0K.
Net shares · 365d
+39.0K
39.0K buy · 0 sell
Net value · 365d
$774.0K
$774.0K in · $0 out
Sentiment · 365d
Net buying
100% buying · 0% selling
Open-market trades · 365d
24
39.0K buy · 0 sell
Net buy / sell volume
Not enough data to chart yet.
Tap or hover the chart for daily net volume. Green = net buying, red = net selling.
All transactions
-
Buy·P
President & CEO
$4.7K
247 sh · $19.21
Own +0%
-
Buy·P
President & CEO
$1.9K
100 sh · $19.21
Own +0%
-
Buy·P
President & CEO
$4.9K
253 sh · $19.20
Own +0%
-
Buy·P
President & CEO
$9.6K
500 sh · $19.19
Own +0%
-
Buy·P
President & CEO
$14.7K
767 sh · $19.18
Own +0%
-
Buy·P
President & CEO
$1.9K
100 sh · $19.18
Own +0%
-
Buy·P
President & CEO
$7.7K
400 sh · $19.18
Own +0%
-
Buy·P
President & CEO
$2.5K
133 sh · $19.17
Own +0%
-
Buy·P
President & CEO
$9.6K
500 sh · $19.16
Own +0%
-
Buy·P
Director
$194.9K
10.0K sh · $19.49
Own +8%
-
Buy·P
Director
$194.4K
10.0K sh · $19.44
Own +8%
-
Other·F
Director
$97.5K
4.9K sh · $19.82
Own -6%
-
Other·F
Director
$97.5K
4.9K sh · $19.82
Own -6%
-
Other·F
SEVP and COO
$71.1K
3.6K sh · $19.82
Own -5%
-
Other·F
Director
$99.4K
5.0K sh · $19.82
Own -6%
-
Other·F
Director
$82.3K
4.2K sh · $19.82
Own -4%
-
Other·F
Director
$97.5K
4.9K sh · $19.82
Own -6%
-
Other·F
Director
$97.5K
4.9K sh · $19.82
Own -6%
-
Buy·P
President & CEO
$9.8K
500 sh · $19.63
Own +0%
-
Buy·P
President & CEO
$1.9K
100 sh · $19.47
Own +0%
-
Buy·P
President & CEO
$3.5K
178 sh · $19.46
Own +0%
-
Buy·P
President & CEO
$14.0K
722 sh · $19.45
Own +0%
-
Buy·P
President & CEO
$9.7K
500 sh · $19.37
Own +0%
-
Buy·P
President & CEO
$3.5K
180 sh · $19.34
Own +0%
-
Buy·P
President & CEO
$6.2K
320 sh · $19.33
Own +0%
-
Other·F
President & CEO
$483.0K
24.4K sh · $19.82
Own -6%
-
Buy·P
President & CEO
$50.4K
2.5K sh · $20.16
Own +1%
-
Buy·P
SEVP and CFO
$20.4K
1.0K sh · $20.42
Own +1%
-
Grant·A
EVP, President Needham Prv Bnk
$0
7.0K sh
Own New
-
Buy·P
President & CEO
$62.3K
3.0K sh · $20.77
Own New
-
Buy·P
President & CEO
$41.6K
2.0K sh · $20.78
Own +4%
-
Buy·P
President & CEO
$62.3K
3.0K sh · $20.77
Own New
-
Buy·P
President & CEO
$41.6K
2.0K sh · $20.78
Own +4%
-
Grant·A
EVP, Chief Administrative Offc
$0
6.9K sh
Own +69%
-
Grant·A
EVP, Treasury & Cash Mgmt Svcs
$0
13.7K sh
Own New
-
Grant·A
SEVP and COO
$0
13.7K sh
Own +23%
-
Grant·A
EVP, Dir CRE Banking
$0
6.9K sh
Own New
-
Grant·A
SEVP and CFO
$0
13.7K sh
Own +14%
-
Grant·A
EVP, Chief Credit Officer
$0
6.9K sh
Own +344%
-
Grant·A
EVP, Dir Spec. Bank. Ctr.
$0
6.9K sh
Own +26%
-
Grant·A
EVP - Dir C&I Banking
$0
6.9K sh
Own New
-
Grant·A
President & CEO
$0
63.0K sh
Own +19%
-
Grant·A
Director
$0
2.4K sh
Own +20%
-
Grant·A
Director
$0
2.4K sh
Own +3%
-
Grant·A
Director
$0
2.4K sh
Own +3%
-
Grant·A
Director
$0
2.4K sh
Own +3%
-
Grant·A
Director
$0
2.4K sh
Own +2%
-
Grant·A
Director
$0
5.4K sh
Own +4%
-
Grant·A
Director
$0
4.8K sh
Own +6%
-
Grant·A
Director
$0
7.7K sh
Own +9%
-
Grant·A
Director
$0
2.4K sh
Own +3%
-
Grant·A
Director
$0
5.5K sh
Own +6%
-
Grant·A
Director
$0
2.4K sh
Own +3%
-
Grant·A
Director
$0
7.2K sh
Own +10%
| Date▾ | Insider | Type | Shares | Value |
|---|---|---|---|---|
| May 15, 2026 | Joseph P Campanelli KEY | Buy P | 247 | $4.7K |
| May 15, 2026 | Joseph P Campanelli KEY | Buy P | 100 | $1.9K |
| May 15, 2026 | Joseph P Campanelli KEY | Buy P | 253 | $4.9K |
| May 15, 2026 | Joseph P Campanelli KEY | Buy P | 500 | $9.6K |
| May 15, 2026 | Joseph P Campanelli KEY | Buy P | 767 | $14.7K |
| May 15, 2026 | Joseph P Campanelli KEY | Buy P | 100 | $1.9K |
| May 15, 2026 | Joseph P Campanelli KEY | Buy P | 400 | $7.7K |
| May 15, 2026 | Joseph P Campanelli KEY | Buy P | 133 | $2.5K |
| May 15, 2026 | Joseph P Campanelli KEY | Buy P | 500 | $9.6K |
| Apr 24, 2026 | Hope Pascucci | Buy P | 10.0K | $194.9K |
| Apr 24, 2026 | Hope Pascucci | Buy P | 10.0K | $194.4K |
| Apr 24, 2026 | Mark Whalen | Other F | 4.9K | $97.5K |
| Apr 24, 2026 | Joseph R Nolan JR | Other F | 4.9K | $97.5K |
| Apr 24, 2026 | Christine Roberts | Other F | 3.6K | $71.1K |
| Apr 24, 2026 | Kenneth C. Montgomery | Other F | 5.0K | $99.4K |
| Apr 24, 2026 | Christopher R. Lynch | Other F | 4.2K | $82.3K |
| Apr 24, 2026 | Angela Jackson | Other F | 4.9K | $97.5K |
| Apr 24, 2026 | William Darcey | Other F | 4.9K | $97.5K |
| Apr 24, 2026 | Joseph P Campanelli KEY | Buy P | 500 | $9.8K |
| Apr 24, 2026 | Joseph P Campanelli KEY | Buy P | 100 | $1.9K |
| Apr 24, 2026 | Joseph P Campanelli KEY | Buy P | 178 | $3.5K |
| Apr 24, 2026 | Joseph P Campanelli KEY | Buy P | 722 | $14.0K |
| Apr 24, 2026 | Joseph P Campanelli KEY | Buy P | 500 | $9.7K |
| Apr 24, 2026 | Joseph P Campanelli KEY | Buy P | 180 | $3.5K |
| Apr 24, 2026 | Joseph P Campanelli KEY | Buy P | 320 | $6.2K |
| Apr 24, 2026 | Joseph P Campanelli KEY | Other F | 24.4K | $483.0K |
| Mar 19, 2026 | Joseph P Campanelli KEY | Buy P | 2.5K | $50.4K |
| Mar 9, 2026 | Jean-Pierre Lapointe KEY | Buy P | 1.0K | $20.4K |
| Mar 9, 2026 | Matthew G Schulman KEY | Grant A | 7.0K | $0 |
| Mar 6, 2026 | Joseph P Campanelli KEY | Buy P | 3.0K | $62.3K |
| Mar 6, 2026 | Joseph P Campanelli KEY | Buy P | 2.0K | $41.6K |
| Mar 6, 2026 | Joseph P Campanelli KEY | Buy P | 3.0K | $62.3K |
| Mar 6, 2026 | Joseph P Campanelli KEY | Buy P | 2.0K | $41.6K |
| Feb 25, 2026 | James J. White | Grant A | 6.9K | $0 |
| Feb 25, 2026 | Matthew Richardson | Grant A | 13.7K | $0 |
| Feb 25, 2026 | Christine Roberts | Grant A | 13.7K | $0 |
| Feb 25, 2026 | Stephanie Maiona | Grant A | 6.9K | $0 |
| Feb 25, 2026 | Jean-Pierre Lapointe KEY | Grant A | 13.7K | $0 |
| Feb 25, 2026 | Kevin Henkin | Grant A | 6.9K | $0 |
| Feb 25, 2026 | Paul A Evangelista | Grant A | 6.9K | $0 |
| Feb 25, 2026 | James B. Daley | Grant A | 6.9K | $0 |
| Feb 25, 2026 | Joseph P Campanelli KEY | Grant A | 63.0K | $0 |
| Jan 2, 2026 | Joseph B Reilly | Grant A | 2.4K | $0 |
| Jan 2, 2026 | Mark Whalen | Grant A | 2.4K | $0 |
| Jan 2, 2026 | Joseph R Nolan JR | Grant A | 2.4K | $0 |
| Jan 2, 2026 | Muhammad Raza | Grant A | 2.4K | $0 |
| Jan 2, 2026 | Hope Pascucci | Grant A | 2.4K | $0 |
| Jan 2, 2026 | Francis Orfanello | Grant A | 5.4K | $0 |
| Jan 2, 2026 | Kenneth C. Montgomery | Grant A | 4.8K | $0 |
| Jan 2, 2026 | Christopher R. Lynch | Grant A | 7.7K | $0 |
| Jan 2, 2026 | Angela Jackson | Grant A | 2.4K | $0 |
| Jan 2, 2026 | Mary Susan Elliott | Grant A | 5.5K | $0 |
| Jan 2, 2026 | William Darcey | Grant A | 2.4K | $0 |
| Jan 2, 2026 | Paul J. Ayoub | Grant A | 7.2K | $0 |
About NBBK insider trading
This page tracks insider transactions for NB Bancorp, Inc. (NBBK) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.