InsiderTrades

Form 4 for NBBK NB Bancorp, Inc.

Accepted 2026-01-06 00:00:00 ET · period of report 2026-01-02 · accession 0001437749-26-000488 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X Filed Traded Ticker Insider Title Type Price Qty Owned ΔOwn Value
2026-01-06 2026-01-02 NBBK Whalen Mark Dir A - Grant $0.00 +2,402 77.6K +3% $0

Purchase Sale Sale after option exercise All abbreviations

Every reported transaction

#TableSecurityDateCodeA/DSharesPriceOwned afterOwnExercise / expiryUnderlyingFootnotes
1 Common Common Stock 2026-01-02 A A 2,402 $0.00 77,639 D — — (F1) Shares of restricted stock vest 100% on January 2, 2027. (F2) Includes shares of restricted stock which vest at a rate of 20% per year commencing on April 24, 2026.