NB BANCORP INC

Ticker: NBBK CUSIP: 63945M107 Class: Common Stock

Round Rock Advisors, LLC's Holding History (CIK: 0001846991)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 51,906 Value ($000) $1,029 Avg Close $19.03 Range $16.84 - $21.57

Q3 2025

Shares 33,970 Value ($000) $621 Avg Close $18.34 Range $16.76 - $19.42

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	51,906	$1,029	$19.03	$16.84 - $21.57
Q3 2025	33,970	$621	$18.34	$16.76 - $19.42