CAMPANELLI JOSEPH P 4

What Happened
Joseph P. Campanelli, President & CEO (also a director and board chair) purchased a total of 3,000 NB Bancorp (NBBK) shares in multiple open-market transactions on May 15, 2026. The buys ranged from $19.16 to $19.21 per share, for a combined reported cost of $57,547. These were purchases (transaction code P), which investors often view as a stronger signal than routine sales, though purchases do not prove the insider’s motives.

Key Details

• Transaction date: May 15, 2026; Filing date: May 18, 2026 (filed within the required reporting window).
• Trades (all purchases): 500 @ $19.16; 133 @ $19.17; 400 @ $19.18; 100 @ $19.18; 767 @ $19.18; 500 @ $19.19; 253 @ $19.20; 100 @ $19.20; 247 @ $19.21 — total 3,000 shares, ~$57,547.
• Transaction type: Open-market purchases (code P).
• Shares owned after transaction: Not specified in the provided filing details.
• Footnotes: F1 and F2 indicate that some reported shares include restricted stock that vests over time — F1 vests 20% per year starting April 24, 2026; F2 vests 33 1/3% per year starting February 25, 2027.
• No indication in the provided data of a 10b5‑1 plan, cashless exercise, gift, or tax-withholding event for these trades.

Context: Open-market purchases are straightforward buys of company stock by an insider. They are routinely reported on Form 4 and can attract attention from investors, but filings are factual disclosures and do not explain the insider’s reasons for trading.