VICOR CORP

Ticker: VICR CUSIP: 925815102 Class: Common Stock

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

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

Q4 2021

Shares 738,149 Value ($000) $93,730 Avg Close $141.59 Range $112.60 - $164.76

Q3 2021

Shares 542,700 Value ($000) $72,809 Avg Close $119.49 Range $101.89 - $139.01

Q2 2021

Shares 354,851 Value ($000) $37,522 Avg Close $88.98 Range $74.08 - $106.50

Q1 2021

Shares 347,703 Value ($000) $29,565 Avg Close $94.14 Range $79.81 - $104.68

Q4 2020

Shares 255,369 Value ($000) $23,550 Avg Close $83.99 Range $73.71 - $96.64

Q3 2020

Shares 337,827 Value ($000) $26,259 Avg Close $79.56 Range $70.90 - $90.88

Q2 2020

Shares 450,987 Value ($000) $32,449 Avg Close $56.15 Range $37.28 - $73.76

Q1 2020

Shares 259,882 Value ($000) $11,575 Avg Close $47.42 Range $30.42 - $57.86

Q4 2019

Shares 100,956 Value ($000) $4,717 Avg Close $38.08 Range $28.69 - $46.89

Q4 2014

Shares 16,602 Value ($000) $201 Avg Close $11.85 Range $8.43 - $13.96

Q3 2014

Shares 10,000 Value ($000) $94 Avg Close $8.32 Range $7.20 - $10.20

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2021	738,149	$93,730	$141.59	$112.60 - $164.76
Q3 2021	542,700	$72,809	$119.49	$101.89 - $139.01
Q2 2021	354,851	$37,522	$88.98	$74.08 - $106.50
Q1 2021	347,703	$29,565	$94.14	$79.81 - $104.68
Q4 2020	255,369	$23,550	$83.99	$73.71 - $96.64
Q3 2020	337,827	$26,259	$79.56	$70.90 - $90.88
Q2 2020	450,987	$32,449	$56.15	$37.28 - $73.76
Q1 2020	259,882	$11,575	$47.42	$30.42 - $57.86
Q4 2019	100,956	$4,717	$38.08	$28.69 - $46.89
Q4 2014	16,602	$201	$11.85	$8.43 - $13.96
Q3 2014	10,000	$94	$8.32	$7.20 - $10.20