Form4insider filings, from the source

Company · CIK 0001979330 · SIC 6036 — Savings Institutions, Not Federally Chartered · Nasdaq

NB Bancorp, Inc. · NBBK

Insider activity reported against this company. All insider holders · On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $48k · 2sales $46k · 1net $2,000
$10k$10k$100k$100k$1M$1MbuyssalesAug 13Aug 14Aug 15Aug 17Aug 18Aug 19Aug 21

Reported at this company — common stock

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Aug 20, 2026 PForm 4 →Aug 21, 4:57 pm EDTJoseph P CampanelliPresident & CEO, Director2,000$21.75$43,500379,790+0.53%
Aug 20, 2026 PForm 4 →Aug 21, 4:05 pm EDTJean-Pierre LapointeSEVP and CFO200$21.80$4,360110,531+0.18%
Aug 14, 2026 SForm 4 →Aug 18, 4:05 pm EDTKevin HenkinEVP, Chief Credit Officer2,000$22.93$45,8606,874−22.5%

Reported at this company — derivatives (options, RSUs, warrants)

No reported derivative activity in this period.