IROBOT CORP

Ticker: IRBTQ CUSIP: 462726100 Class: COM

GREAT LAKES ADVISORS, LLC's Holding History (CIK: 0001078013)

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

Q4 2021

Shares 3,278 Value ($000) $216 Avg Close $79.08 Range $63.37 - $98.86

Q3 2021

Shares 166,991 Value ($000) $13,109 Avg Close $85.20 Range $78.17 - $94.48

Q2 2021

Shares 168,675 Value ($000) $15,753 Avg Close $102.54 Range $89.05 - $125.35

Q1 2021

Shares 169,194 Value ($000) $20,672 Avg Close $113.68 Range $78.54 - $197.40

Q4 2020

Shares 224,972 Value ($000) $18,063 Avg Close $81.40 Range $71.10 - $98.55

Q3 2020

Shares 233,530 Value ($000) $17,725 Avg Close $77.05 Range $67.55 - $89.26

Q2 2020

Shares 76,115 Value ($000) $6,386 Avg Close $65.85 Range $37.01 - $87.20

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2021	3,278	$216	$79.08	$63.37 - $98.86
Q3 2021	166,991	$13,109	$85.20	$78.17 - $94.48
Q2 2021	168,675	$15,753	$102.54	$89.05 - $125.35
Q1 2021	169,194	$20,672	$113.68	$78.54 - $197.40
Q4 2020	224,972	$18,063	$81.40	$71.10 - $98.55
Q3 2020	233,530	$17,725	$77.05	$67.55 - $89.26
Q2 2020	76,115	$6,386	$65.85	$37.01 - $87.20