MIDDLEFIELD BANC CORP

Ticker: MBCN CUSIP: 596304204 Class: Common Stock

Nuveen, LLC's Holding History (CIK: 0001871926)

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

Q4 2025

Shares 12,437 Value ($000) $430 Avg Close $32.90 Range $26.92 - $37.45

Q3 2025

Shares 12,437 Value ($000) $373 Avg Close $29.58 Range $26.13 - $33.52

Q2 2025

Shares 12,437 Value ($000) $374 Avg Close $27.24 Range $22.16 - $30.21

Q1 2025

Shares 14,177 Value ($000) $396 Avg Close $25.31 Range $23.25 - $29.04

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	12,437	$430	$32.90	$26.92 - $37.45
Q3 2025	12,437	$373	$29.58	$26.13 - $33.52
Q2 2025	12,437	$374	$27.24	$22.16 - $30.21
Q1 2025	14,177	$396	$25.31	$23.25 - $29.04