InsiderTrades

Form 4 for NBBK NB Bancorp, Inc.

Accepted 2026-01-30 00:00:00 ET · period of report 2025-01-24 · accession 0001437749-26-002496 · 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
2026-01-30 2025-01-24 NBBK Elliott Mary Susan Dir P - Purchase $18.72 +10.0K 115.8K +9% +$187.2K
I 2026-01-30 2025-05-02 NBBK Elliott Mary Susan Dir P - Purchase $21.39 +1,434 1,434 New +$30.7K

Purchase Sale Sale after option exercise All abbreviations

Every reported transaction

#TableSecurityDateCodeA/DSharesPriceOwned afterOwnExercise / expiryUnderlyingFootnotes
1 Common Common Stock 2025-01-24 P A 10,000 $18.72 115,761 D By Spouse — — (F2) Includes shares of restricted stock which vest 100% on January 2, 2027. (F1) Includes shares of restricted stock which vest at a rate of 20% per year commencing on April 24, 2026.
2 Common Common Stock 2025-05-02 P A 1,434 $21.39 1,434 I — —