ILLUMINA INC

Ticker: ILMN CUSIP: 452327109 Class: COM

BLAIR WILLIAM & CO/IL's Holding History (CIK: 0000902367)

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

Q4 2025

Shares 1,581 Value ($000) $207 Avg Close $117.40 Range $88.00 - $138.80

Q3 2025

Shares 3,002 Value ($000) $285 Avg Close $99.18 Range $90.62 - $111.00

Q2 2025

Shares 2,586 Value ($000) $247 Avg Close $81.16 Range $68.70 - $96.83

Q4 2024

Shares 22,332 Value ($000) $2,984 Avg Close $142.41 Range $125.06 - $156.66

Q3 2024

Shares 24,177 Value ($000) $3,153 Avg Close $123.37 Range $103.57 - $137.18

Q2 2024

Shares 24,981 Value ($000) $2,608 Avg Close $112.18 Range $97.36 - $134.76

Q1 2024

Shares 26,130 Value ($000) $3,588 Avg Close $134.04 Range $122.39 - $144.15

Q4 2023

Shares 26,527 Value ($000) $3,694 Avg Close $115.36 Range $86.58 - $140.01

Q3 2023

Shares 28,821 Value ($000) $3,957 Avg Close $164.42 Range $123.90 - $190.31

Q2 2023

Shares 32,418 Value ($000) $6,078 Avg Close $202.41 Range $176.67 - $227.06

Q1 2023

Shares 35,431 Value ($000) $8,239 Avg Close $204.65 Range $177.04 - $232.05

Q4 2022

Shares 38,331 Value ($000) $7,751 Avg Close $207.24 Range $174.85 - $242.09

Q3 2022

Shares 37,144 Value ($000) $7,087 Avg Close $197.84 Range $168.73 - $229.85

Q2 2022

Shares 39,481 Value ($000) $7,279 Avg Close $255.36 Range $175.10 - $361.05

Q1 2022

Shares 41,807 Value ($000) $14,607 Avg Close $337.77 Range $294.54 - $416.34

Q4 2021

Shares 45,486 Value ($000) $17,305 Avg Close $378.89 Range $331.74 - $413.42

Q3 2021

Shares 44,921 Value ($000) $18,220 Avg Close $459.88 Range $394.08 - $511.67

Q2 2021

Shares 44,704 Value ($000) $21,154 Avg Close $402.76 Range $358.04 - $473.74

Q1 2021

Shares 45,162 Value ($000) $17,345 Avg Close $407.75 Range $346.30 - $540.63

Q4 2020

Shares 42,308 Value ($000) $15,654 Avg Close $318.77 Range $280.17 - $368.03

Q3 2020

Shares 42,719 Value ($000) $13,204 Avg Close $344.57 Range $253.33 - $393.19

Q2 2020

Shares 48,130 Value ($000) $17,825 Avg Close $321.78 Range $244.30 - $367.51

Q1 2020

Shares 46,555 Value ($000) $12,715 Avg Close $279.63 Range $191.42 - $330.38

Q4 2019

Shares 48,268 Value ($000) $16,012 Avg Close $303.09 Range $272.14 - $327.46

Q3 2019

Shares 48,725 Value ($000) $14,823 Avg Close $294.76 Range $256.13 - $370.39

Q2 2019

Shares 53,083 Value ($000) $19,543 Avg Close $315.75 Range $292.17 - $358.95

Q1 2019

Shares 75,111 Value ($000) $23,336 Avg Close $291.63 Range $261.30 - $313.54

Q4 2018

Shares 69,602 Value ($000) $20,876 Avg Close $309.79 Range $263.62 - $361.78

Q3 2018

Shares 71,047 Value ($000) $26,079 Avg Close $320.46 Range $267.18 - $362.46

Q2 2018

Shares 79,926 Value ($000) $22,323 Avg Close $254.40 Range $219.67 - $285.17

Q1 2018

Shares 70,196 Value ($000) $16,596 Avg Close $229.19 Range $201.86 - $249.65

Q4 2017

Shares 74,525 Value ($000) $16,283 Avg Close $205.77 Range $192.81 - $224.44

Q3 2017

Shares 72,472 Value ($000) $14,436 Avg Close $186.17 Range $163.40 - $208.50

Q2 2017

Shares 56,128 Value ($000) $9,739 Avg Close $173.03 Range $162.61 - $184.32

Q1 2017

Shares 54,807 Value ($000) $9,301 Avg Close $157.56 Range $124.67 - $169.57

Q4 2016

Shares 64,284 Value ($000) $8,231 Avg Close $134.78 Range $116.12 - $181.79

Q3 2016

Shares 125,774 Value ($000) $22,848 Avg Close $159.99 Range $129.04 - $177.69

Q2 2016

Shares 118,730 Value ($000) $16,667 Avg Close $142.06 Range $123.64 - $173.90

Q1 2016

Shares 80,798 Value ($000) $13,098 Avg Close $152.87 Range $126.82 - $183.12

Q4 2015

Shares 76,620 Value ($000) $14,707 Avg Close $161.39 Range $126.46 - $191.12

Q3 2015

Shares 143,234 Value ($000) $25,183 Avg Close $202.14 Range $156.82 - $235.77

Q2 2015

Shares 141,594 Value ($000) $30,918 Avg Close $195.32 Range $173.81 - $217.00

Q1 2015

Shares 138,445 Value ($000) $25,701 Avg Close $188.35 Range $173.66 - $207.52

Q4 2014

Shares 138,162 Value ($000) $25,502 Avg Close $176.23 Range $141.17 - $191.99

Q3 2014

Shares 134,825 Value ($000) $22,100 Avg Close $167.17 Range $152.58 - $179.96

Q2 2014

Shares 128,829 Value ($000) $23,001 Avg Close $149.19 Range $124.21 - $175.88

Q1 2014

Shares 129,674 Value ($000) $19,277 Avg Close $146.95 Range $103.88 - $178.31

Q4 2013

Shares 69,980 Value ($000) $7,739 Avg Close $91.59 Range $70.79 - $111.87

Q3 2013

Shares 70,145 Value ($000) $5,669 Avg Close $76.50 Range $70.17 - $83.47

Q2 2013

Shares 70,520 Value ($000) $5,277 Avg Close $64.01 Range $52.31 - $75.01

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	1,581	$207	$117.40	$88.00 - $138.80
Q3 2025	3,002	$285	$99.18	$90.62 - $111.00
Q2 2025	2,586	$247	$81.16	$68.70 - $96.83
Q4 2024	22,332	$2,984	$142.41	$125.06 - $156.66
Q3 2024	24,177	$3,153	$123.37	$103.57 - $137.18
Q2 2024	24,981	$2,608	$112.18	$97.36 - $134.76
Q1 2024	26,130	$3,588	$134.04	$122.39 - $144.15
Q4 2023	26,527	$3,694	$115.36	$86.58 - $140.01
Q3 2023	28,821	$3,957	$164.42	$123.90 - $190.31
Q2 2023	32,418	$6,078	$202.41	$176.67 - $227.06
Q1 2023	35,431	$8,239	$204.65	$177.04 - $232.05
Q4 2022	38,331	$7,751	$207.24	$174.85 - $242.09
Q3 2022	37,144	$7,087	$197.84	$168.73 - $229.85
Q2 2022	39,481	$7,279	$255.36	$175.10 - $361.05
Q1 2022	41,807	$14,607	$337.77	$294.54 - $416.34
Q4 2021	45,486	$17,305	$378.89	$331.74 - $413.42
Q3 2021	44,921	$18,220	$459.88	$394.08 - $511.67
Q2 2021	44,704	$21,154	$402.76	$358.04 - $473.74
Q1 2021	45,162	$17,345	$407.75	$346.30 - $540.63
Q4 2020	42,308	$15,654	$318.77	$280.17 - $368.03
Q3 2020	42,719	$13,204	$344.57	$253.33 - $393.19
Q2 2020	48,130	$17,825	$321.78	$244.30 - $367.51
Q1 2020	46,555	$12,715	$279.63	$191.42 - $330.38
Q4 2019	48,268	$16,012	$303.09	$272.14 - $327.46
Q3 2019	48,725	$14,823	$294.76	$256.13 - $370.39
Q2 2019	53,083	$19,543	$315.75	$292.17 - $358.95
Q1 2019	75,111	$23,336	$291.63	$261.30 - $313.54
Q4 2018	69,602	$20,876	$309.79	$263.62 - $361.78
Q3 2018	71,047	$26,079	$320.46	$267.18 - $362.46
Q2 2018	79,926	$22,323	$254.40	$219.67 - $285.17
Q1 2018	70,196	$16,596	$229.19	$201.86 - $249.65
Q4 2017	74,525	$16,283	$205.77	$192.81 - $224.44
Q3 2017	72,472	$14,436	$186.17	$163.40 - $208.50
Q2 2017	56,128	$9,739	$173.03	$162.61 - $184.32
Q1 2017	54,807	$9,301	$157.56	$124.67 - $169.57
Q4 2016	64,284	$8,231	$134.78	$116.12 - $181.79
Q3 2016	125,774	$22,848	$159.99	$129.04 - $177.69
Q2 2016	118,730	$16,667	$142.06	$123.64 - $173.90
Q1 2016	80,798	$13,098	$152.87	$126.82 - $183.12
Q4 2015	76,620	$14,707	$161.39	$126.46 - $191.12
Q3 2015	143,234	$25,183	$202.14	$156.82 - $235.77
Q2 2015	141,594	$30,918	$195.32	$173.81 - $217.00
Q1 2015	138,445	$25,701	$188.35	$173.66 - $207.52
Q4 2014	138,162	$25,502	$176.23	$141.17 - $191.99
Q3 2014	134,825	$22,100	$167.17	$152.58 - $179.96
Q2 2014	128,829	$23,001	$149.19	$124.21 - $175.88
Q1 2014	129,674	$19,277	$146.95	$103.88 - $178.31
Q4 2013	69,980	$7,739	$91.59	$70.79 - $111.87
Q3 2013	70,145	$5,669	$76.50	$70.17 - $83.47
Q2 2013	70,520	$5,277	$64.01	$52.31 - $75.01