InsiderTrades

Form 4 for NBBK NB Bancorp, Inc.

Accepted 2026-04-27 14:48:53 ET · period of report 2026-04-24 · accession 0001437749-26-013435 · 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
2026-04-27 14:48 2026-04-24 NBBK Montgomery Kenneth C. Dir F - Tax $19.82 -5,015 80.1K -6% -$99.4K

Purchase Sale Sale after option exercise All abbreviations

Every reported transaction

#TableSecurityDateCodeA/DSharesPriceOwned afterOwnExercise / expiryUnderlyingFootnotes
1 Common Common Stock 2026-04-24 F D 5,015 $19.82 80,125 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.