POWER SOLUTIONS INTL INC

Ticker: PSIX CUSIP: 73933G202 Class: Common Stock

DRIEHAUS CAPITAL MANAGEMENT LLC's Holding History (CIK: 0000938206)

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

Q4 2025

Shares 229,120 Value ($000) $13,092 Avg Close $71.37 Range $44.17 - $100.00

Q3 2025

Shares 134,502 Value ($000) $13,211 Avg Close $88.67 Range $61.72 - $121.78

Q3 2014

Shares 21,577 Value ($000) $1,489 Avg Close $67.67 Range $58.03 - $79.50

Q2 2014

Shares 77,768 Value ($000) $5,597 Avg Close $76.82 Range $66.03 - $88.96

Q1 2014

Shares 114,600 Value ($000) $8,614 Avg Close $72.19 Range $56.53 - $87.40

Q4 2013

Shares 85,200 Value ($000) $6,399 Avg Close $65.56 Range $52.30 - $78.96

Q3 2013

Shares 37,512 Value ($000) $2,218 Avg Close $48.66 Range $33.00 - $59.26

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	229,120	$13,092	$71.37	$44.17 - $100.00
Q3 2025	134,502	$13,211	$88.67	$61.72 - $121.78
Q3 2014	21,577	$1,489	$67.67	$58.03 - $79.50
Q2 2014	77,768	$5,597	$76.82	$66.03 - $88.96
Q1 2014	114,600	$8,614	$72.19	$56.53 - $87.40
Q4 2013	85,200	$6,399	$65.56	$52.30 - $78.96
Q3 2013	37,512	$2,218	$48.66	$33.00 - $59.26