Form4.ai tracks every SEC insider trade in real time. See every NBBK insider filing with a free account — no card.
See every NBBK insider filing — free account, no card.
Free accountNB Bancorp, Inc. (NBBK) has 3 SEC Form 4 insider filings on record in the last 90 days. That includes 2 insider purchases totalling $48K, and 1 sales totalling $46K. Most recent filing: Aug. 21, 2026.
Open-market value, last 90 days
Form 4 filings by type, last 90 days
| Date | Insider | Trade | Value | Price since buy |
|---|---|---|---|---|
| Aug 21, 2026 SEC filing | CAMPANELLI JOSEPH P President & CEO | Bought | $43,500 | +4.6% 30D |
| Aug 21, 2026 SEC filing | Lapointe Jean-Pierre SEVP and CFO | Bought | $4,360 | +4.3% 30D |
| Aug 18, 2026 SEC filing | Henkin Kevin EVP, Chief Credit Officer | Sold | $45,860 | — |
Create a free account to see all 3 NBBK filings from the last 90 days. No card needed.
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Form 4 is the filing company officers, directors and 10% shareholders must submit to the SEC within two business days of trading their own company's stock. Open-market purchases generally carry more signal than sales, which are often scheduled in advance. More on how this works.