ILLUMINA INC

Ticker: ILMN CUSIP: 452327109 Class: COM

GRANDFIELD & DODD, LLC's Holding History (CIK: 0001308016)

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

Q3 2021

Shares 506 Value ($000) $210 Avg Close $459.88 Range $394.08 - $511.67

Q2 2021

Shares 506 Value ($000) $240 Avg Close $402.76 Range $358.04 - $473.74

Q4 2015

Shares 1,206 Value ($000) $231 Avg Close $161.39 Range $126.46 - $191.12

Q3 2015

Shares 1,223 Value ($000) $215 Avg Close $202.14 Range $156.82 - $235.77

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2021	506	$210	$459.88	$394.08 - $511.67
Q2 2021	506	$240	$402.76	$358.04 - $473.74
Q4 2015	1,206	$231	$161.39	$126.46 - $191.12
Q3 2015	1,223	$215	$202.14	$156.82 - $235.77