InsiderTrades

Form 4 for NBBK NB Bancorp, Inc.

Accepted 2026-04-27 14:47:29 ET · period of report 2026-04-24 · accession 0001437749-26-013433 · 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 14:47 2026-04-24 NBBK Roberts Christine COO, SEVP F - Tax $19.82 -3,589 71.1K -5% -$71.1K

Purchase Sale Sale after option exercise All abbreviations

Every reported transaction

#TableSecurityDateCodeA/DSharesPriceOwned afterOwnExercise / expiryUnderlyingFootnotes
1 Common Common Stock 2026-04-24 F D 3,589 $19.82 71,081 D — — (F1) Includes shares of restricted stock which vest at a rate of 20% per year commencing on April 24, 2026. (F2) Includes shares of restricted stock which vest at a rate of 33 1/3% per year commencing on February 25, 2027.