InsiderTrades

Form 4/A for NBBK NB Bancorp, Inc.

Accepted 2026-03-20 00:00:00 ET · period of report 2026-03-06 · accession 0001437749-26-009133 · 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
MAI 2026-03-20 2026-03-06 NBBK CAMPANELLI JOSEPH P Pres, CEO, Dir, COB P - Purchase $20.77 +5,000 3,000 New +$103.9K

Purchase Sale Sale after option exercise All abbreviations

Every reported transaction

#TableSecurityDateCodeA/DSharesPriceOwned afterOwnExercise / expiryUnderlyingFootnotes
1 Common Common Stock 2026-03-06 P A 2,000 $20.78 47,000 I By IRA — —
2 Common Common Stock 2026-03-06 P A 3,000 $20.77 3,000 I As trustee for trust — —