ILLUMINA INC

Ticker: ILMN CUSIP: 452327109 Class: COM

FAIRFIELD, BUSH & CO.'s Holding History (CIK: 0001116247)

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

Q4 2025

Shares 4,029 Value ($000) $528 Avg Close $117.40 Range $88.00 - $138.80

Q3 2025

Shares 4,779 Value ($000) $454 Avg Close $99.18 Range $90.62 - $111.00

Q2 2025

Shares 5,139 Value ($000) $490 Avg Close $81.16 Range $68.70 - $96.83

Q1 2025

Shares 7,359 Value ($000) $584 Avg Close $108.24 Range $77.54 - $153.06

Q4 2024

Shares 7,839 Value ($000) $1,048 Avg Close $142.41 Range $125.06 - $156.66

Q3 2024

Shares 8,037 Value ($000) $1,048 Avg Close $123.37 Range $103.57 - $137.18

Q2 2024

Shares 7,915 Value ($000) $826 Avg Close $112.18 Range $97.36 - $134.76

Q1 2024

Shares 8,075 Value ($000) $1,109 Avg Close $134.04 Range $122.39 - $144.15

Q4 2023

Shares 7,602 Value ($000) $1,059 Avg Close $115.36 Range $86.58 - $140.01

Q3 2023

Shares 7,272 Value ($000) $998 Avg Close $164.42 Range $123.90 - $190.31

Q2 2023

Shares 17,622 Value ($000) $3,304 Avg Close $202.41 Range $176.67 - $227.06

Q1 2023

Shares 14,912 Value ($000) $3,468 Avg Close $204.65 Range $177.04 - $232.05

Q4 2022

Shares 6,787 Value ($000) $1,372 Avg Close $207.24 Range $174.85 - $242.09

Q3 2022

Shares 7,287 Value ($000) $1,390 Avg Close $197.84 Range $168.73 - $229.85

Q2 2022

Shares 6,932 Value ($000) $1,278 Avg Close $255.36 Range $175.10 - $361.05

Q1 2022

Shares 6,341 Value ($000) $2,216 Avg Close $337.77 Range $294.54 - $416.34

Q4 2021

Shares 6,341 Value ($000) $2,412 Avg Close $378.89 Range $331.74 - $413.42

Q3 2021

Shares 13,994 Value ($000) $5,676 Avg Close $459.88 Range $394.08 - $511.67

Q2 2021

Shares 14,169 Value ($000) $6,705 Avg Close $402.76 Range $358.04 - $473.74

Q1 2021

Shares 14,044 Value ($000) $5,394 Avg Close $407.75 Range $346.30 - $540.63

Q4 2020

Shares 15,441 Value ($000) $5,713 Avg Close $318.77 Range $280.17 - $368.03

Q3 2020

Shares 15,472 Value ($000) $4,782 Avg Close $344.57 Range $253.33 - $393.19

Q2 2020

Shares 15,208 Value ($000) $5,632 Avg Close $321.78 Range $244.30 - $367.51

Q1 2020

Shares 15,861 Value ($000) $4,332 Avg Close $279.63 Range $191.42 - $330.38

Q4 2019

Shares 15,676 Value ($000) $5,200 Avg Close $303.09 Range $272.14 - $327.46

Q3 2019

Shares 15,476 Value ($000) $4,708 Avg Close $294.76 Range $256.13 - $370.39

Q2 2019

Shares 15,561 Value ($000) $5,729 Avg Close $315.75 Range $292.17 - $358.95

Q1 2019

Shares 15,948 Value ($000) $4,955 Avg Close $291.63 Range $261.30 - $313.54

Q4 2018

Shares 16,408 Value ($000) $4,921 Avg Close $309.79 Range $263.62 - $361.78

Q3 2018

Shares 16,851 Value ($000) $6,185 Avg Close $320.46 Range $267.18 - $362.46

Q2 2018

Shares 17,127 Value ($000) $4,783 Avg Close $254.40 Range $219.67 - $285.17

Q1 2018

Shares 17,716 Value ($000) $4,189 Avg Close $229.19 Range $201.86 - $249.65

Q4 2017

Shares 18,985 Value ($000) $4,148 Avg Close $205.77 Range $192.81 - $224.44

Q3 2017

Shares 18,730 Value ($000) $3,731 Avg Close $186.17 Range $163.40 - $208.50

Q2 2017

Shares 19,059 Value ($000) $3,307 Avg Close $173.03 Range $162.61 - $184.32

Q1 2017

Shares 19,279 Value ($000) $3,290 Avg Close $157.56 Range $124.67 - $169.57

Q4 2016

Shares 18,749 Value ($000) $2,401 Avg Close $134.78 Range $116.12 - $181.79

Q3 2016

Shares 28,119 Value ($000) $5,108 Avg Close $159.99 Range $129.04 - $177.69

Q2 2016

Shares 28,955 Value ($000) $4,065 Avg Close $142.06 Range $123.64 - $173.90

Q1 2016

Shares 28,810 Value ($000) $4,670 Avg Close $152.87 Range $126.82 - $183.12

Q4 2015

Shares 31,710 Value ($000) $6,087 Avg Close $161.39 Range $126.46 - $191.12

Q3 2015

Shares 21,520 Value ($000) $3,784 Avg Close $202.14 Range $156.82 - $235.77

Q2 2015

Shares 27,480 Value ($000) $6,001 Avg Close $195.32 Range $173.81 - $217.00

Q1 2015

Shares 20,464 Value ($000) $3,799 Avg Close $188.35 Range $173.66 - $207.52

Q4 2014

Shares 15,344 Value ($000) $2,832 Avg Close $176.23 Range $141.17 - $191.99

Q3 2014

Shares 10,169 Value ($000) $1,667 Avg Close $167.17 Range $152.58 - $179.96

Q2 2014

Shares 10,290 Value ($000) $1,837 Avg Close $149.19 Range $124.21 - $175.88

Q1 2014

Shares 6,490 Value ($000) $965 Avg Close $146.95 Range $103.88 - $178.31

Q4 2013

Shares 7,010 Value ($000) $775 Avg Close $91.59 Range $70.79 - $111.87

Q3 2013

Shares 9,725 Value ($000) $786 Avg Close $76.50 Range $70.17 - $83.47

Q2 2013

Shares 17,145 Value ($000) $1,283 Avg Close $64.01 Range $52.31 - $75.01

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	4,029	$528	$117.40	$88.00 - $138.80
Q3 2025	4,779	$454	$99.18	$90.62 - $111.00
Q2 2025	5,139	$490	$81.16	$68.70 - $96.83
Q1 2025	7,359	$584	$108.24	$77.54 - $153.06
Q4 2024	7,839	$1,048	$142.41	$125.06 - $156.66
Q3 2024	8,037	$1,048	$123.37	$103.57 - $137.18
Q2 2024	7,915	$826	$112.18	$97.36 - $134.76
Q1 2024	8,075	$1,109	$134.04	$122.39 - $144.15
Q4 2023	7,602	$1,059	$115.36	$86.58 - $140.01
Q3 2023	7,272	$998	$164.42	$123.90 - $190.31
Q2 2023	17,622	$3,304	$202.41	$176.67 - $227.06
Q1 2023	14,912	$3,468	$204.65	$177.04 - $232.05
Q4 2022	6,787	$1,372	$207.24	$174.85 - $242.09
Q3 2022	7,287	$1,390	$197.84	$168.73 - $229.85
Q2 2022	6,932	$1,278	$255.36	$175.10 - $361.05
Q1 2022	6,341	$2,216	$337.77	$294.54 - $416.34
Q4 2021	6,341	$2,412	$378.89	$331.74 - $413.42
Q3 2021	13,994	$5,676	$459.88	$394.08 - $511.67
Q2 2021	14,169	$6,705	$402.76	$358.04 - $473.74
Q1 2021	14,044	$5,394	$407.75	$346.30 - $540.63
Q4 2020	15,441	$5,713	$318.77	$280.17 - $368.03
Q3 2020	15,472	$4,782	$344.57	$253.33 - $393.19
Q2 2020	15,208	$5,632	$321.78	$244.30 - $367.51
Q1 2020	15,861	$4,332	$279.63	$191.42 - $330.38
Q4 2019	15,676	$5,200	$303.09	$272.14 - $327.46
Q3 2019	15,476	$4,708	$294.76	$256.13 - $370.39
Q2 2019	15,561	$5,729	$315.75	$292.17 - $358.95
Q1 2019	15,948	$4,955	$291.63	$261.30 - $313.54
Q4 2018	16,408	$4,921	$309.79	$263.62 - $361.78
Q3 2018	16,851	$6,185	$320.46	$267.18 - $362.46
Q2 2018	17,127	$4,783	$254.40	$219.67 - $285.17
Q1 2018	17,716	$4,189	$229.19	$201.86 - $249.65
Q4 2017	18,985	$4,148	$205.77	$192.81 - $224.44
Q3 2017	18,730	$3,731	$186.17	$163.40 - $208.50
Q2 2017	19,059	$3,307	$173.03	$162.61 - $184.32
Q1 2017	19,279	$3,290	$157.56	$124.67 - $169.57
Q4 2016	18,749	$2,401	$134.78	$116.12 - $181.79
Q3 2016	28,119	$5,108	$159.99	$129.04 - $177.69
Q2 2016	28,955	$4,065	$142.06	$123.64 - $173.90
Q1 2016	28,810	$4,670	$152.87	$126.82 - $183.12
Q4 2015	31,710	$6,087	$161.39	$126.46 - $191.12
Q3 2015	21,520	$3,784	$202.14	$156.82 - $235.77
Q2 2015	27,480	$6,001	$195.32	$173.81 - $217.00
Q1 2015	20,464	$3,799	$188.35	$173.66 - $207.52
Q4 2014	15,344	$2,832	$176.23	$141.17 - $191.99
Q3 2014	10,169	$1,667	$167.17	$152.58 - $179.96
Q2 2014	10,290	$1,837	$149.19	$124.21 - $175.88
Q1 2014	6,490	$965	$146.95	$103.88 - $178.31
Q4 2013	7,010	$775	$91.59	$70.79 - $111.87
Q3 2013	9,725	$786	$76.50	$70.17 - $83.47
Q2 2013	17,145	$1,283	$64.01	$52.31 - $75.01