MASIMO CORP

Ticker: MASI CUSIP: 574795100 Class: Common Stock

Assenagon Asset Management S.A.'s Holding History (CIK: 0001546007)

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

Q4 2025

Shares 53,525 Value ($000) $6,961 Avg Close $143.19 Range $129.77 - $157.72

Q3 2025

Shares 2,457 Value ($000) $363 Avg Close $151.39 Range $135.34 - $172.55

Q2 2025

Shares 3,025 Value ($000) $509 Avg Close $159.72 Range $133.70 - $174.50

Q1 2025

Shares 4,379 Value ($000) $730 Avg Close $173.51 Range $159.29 - $194.88

Q4 2024

Shares 216,051 Value ($000) $35,713 Avg Close $157.91 Range $131.60 - $180.97

Q3 2024

Shares 21,263 Value ($000) $2,835 Avg Close $116.03 Range $101.61 - $135.78

Q2 2024

Shares 50,740 Value ($000) $6,390 Avg Close $131.69 Range $112.85 - $147.89

Q1 2024

Shares 6,822 Value ($000) $1,002 Avg Close $129.12 Range $107.57 - $153.93

Q4 2023

Shares 8,773 Value ($000) $1,028 Avg Close $93.21 Range $75.22 - $122.60

Q3 2023

Shares 25,989 Value ($000) $2,279 Avg Close $116.39 Range $83.03 - $164.16

Q1 2023

Shares 3,924 Value ($000) $724 Avg Close $168.70 Range $144.51 - $184.97

Q4 2022

Shares 27,090 Value ($000) $4 Avg Close $137.60 Range $108.89 - $150.87

Q3 2022

Shares 291,859 Value ($000) $41,199 Avg Close $146.09 Range $122.68 - $172.74

Q2 2022

Shares 550,752 Value ($000) $71,967 Avg Close $133.79 Range $112.07 - $154.51

Q1 2022

Shares 535,812 Value ($000) $77,982 Avg Close $192.01 Range $133.94 - $291.15

Q4 2021

Shares 27,275 Value ($000) $7,986 Avg Close $284.79 Range $262.52 - $305.21

Q3 2021

Shares 27,275 Value ($000) $7,384 Avg Close $271.15 Range $241.42 - $288.27

Q1 2021

Shares 35,272 Value ($000) $8,101 Avg Close $251.21 Range $217.65 - $284.86

Q4 2020

Shares 18,028 Value ($000) $4,838 Avg Close $249.38 Range $218.23 - $273.33

Q2 2020

Shares 33,848 Value ($000) $7,717 Avg Close $219.47 Range $173.15 - $258.00

Q2 2019

Shares 112,804 Value ($000) $16,787 Avg Close $137.22 Range $118.93 - $148.93

Q1 2019

Shares 49,106 Value ($000) $6,790 Avg Close $125.54 Range $101.87 - $139.48

Q4 2018

Shares 26,430 Value ($000) $2,838 Avg Close $111.51 Range $98.23 - $126.89

Q3 2018

Shares 106,489 Value ($000) $13,262 Avg Close $110.93 Range $96.14 - $124.74

Q1 2018

Shares 3,933 Value ($000) $346 Avg Close $87.17 Range $80.69 - $96.45

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	53,525	$6,961	$143.19	$129.77 - $157.72
Q3 2025	2,457	$363	$151.39	$135.34 - $172.55
Q2 2025	3,025	$509	$159.72	$133.70 - $174.50
Q1 2025	4,379	$730	$173.51	$159.29 - $194.88
Q4 2024	216,051	$35,713	$157.91	$131.60 - $180.97
Q3 2024	21,263	$2,835	$116.03	$101.61 - $135.78
Q2 2024	50,740	$6,390	$131.69	$112.85 - $147.89
Q1 2024	6,822	$1,002	$129.12	$107.57 - $153.93
Q4 2023	8,773	$1,028	$93.21	$75.22 - $122.60
Q3 2023	25,989	$2,279	$116.39	$83.03 - $164.16
Q1 2023	3,924	$724	$168.70	$144.51 - $184.97
Q4 2022	27,090	$4	$137.60	$108.89 - $150.87
Q3 2022	291,859	$41,199	$146.09	$122.68 - $172.74
Q2 2022	550,752	$71,967	$133.79	$112.07 - $154.51
Q1 2022	535,812	$77,982	$192.01	$133.94 - $291.15
Q4 2021	27,275	$7,986	$284.79	$262.52 - $305.21
Q3 2021	27,275	$7,384	$271.15	$241.42 - $288.27
Q1 2021	35,272	$8,101	$251.21	$217.65 - $284.86
Q4 2020	18,028	$4,838	$249.38	$218.23 - $273.33
Q2 2020	33,848	$7,717	$219.47	$173.15 - $258.00
Q2 2019	112,804	$16,787	$137.22	$118.93 - $148.93
Q1 2019	49,106	$6,790	$125.54	$101.87 - $139.48
Q4 2018	26,430	$2,838	$111.51	$98.23 - $126.89
Q3 2018	106,489	$13,262	$110.93	$96.14 - $124.74
Q1 2018	3,933	$346	$87.17	$80.69 - $96.45