CAMPANELLI JOSEPH P 4

What Happened

• Joseph P. Campanelli, President & CEO, Director and Chairman of NB Bancorp (NBBK), had restricted shares vest and 24,371 shares were disposed on April 24, 2026 to satisfy tax obligations (coded F) at $19.82 for proceeds of $483,033. On the same day he made multiple open‑market purchases totaling 2,500 shares at prices between $19.33 and $19.63, costing $48,619. The disposal appears to be a tax withholding event tied to vesting rather than an ordinary sell for liquidity; the open‑market buys are outright purchases.

Key Details

• Transaction date: April 24, 2026 (Form 4 filed April 27, 2026 — appears timely)
• Sale/Withholding: 24,371 shares disposed at $19.82 each = $483,033 (transaction code F)
• Purchases: 2,500 shares acquired in multiple open‑market trades (code P) at:
  • 320 @ $19.33 ($6,186)
  • 180 @ $19.34 ($3,481)
  • 500 @ $19.37 ($9,685)
  • 722 @ $19.45 ($14,043)
  • 178 @ $19.46 ($3,464)
  • 100 @ $19.47 ($1,947)
  • 500 @ $19.63 ($9,813)
  • Total purchase cost: $48,619
• Net share change from these transactions: -21,871 shares (24,371 disposed vs. 2,500 acquired)
• Shares owned after transaction: not specified in the provided filing excerpt
• Footnotes of note:
  • F1: the disposed shares include restricted stock that vests 20% per year beginning April 24, 2026 (explains tax withholding)
  • F2: references other restricted stock vesting at 33 1/3% per year starting Feb 25, 2027
  • F3: indicates some transactions referenced are not required to be reported under Section 16

Context

• The large disposition was a tax‑withholding/cashless action tied to restricted stock vesting (not necessarily a market sale reflecting a change in view). The smaller open‑market purchases are direct buys by the CEO and are often watched by investors as a more bullish signal than routine withholding. The filing appears timely (filed within the Section 16 reporting window).