Whalen Mark (CIK 2003533) reported 3 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-04-27). Recent activity: Sell NBBK (4,918 shares), Buy NBBK (2,402 shares), Buy NBBK (75,237 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-04-27 | NB Bancorp, Inc. (NBBK) | Director | Sell | 4,918 | $97,475 |
| 2026-01-06 | NB Bancorp, Inc. (NBBK) | Director | Buy | 2,402 | $0 |
| 2025-04-28 | NB Bancorp, Inc. (NBBK) | Director | Buy | 75,237 | $0 |
Source: SEC Form 4 filings · as of 2026-04-27