MASIMO CORP

Ticker: MASI CUSIP: 574795100 Class: Common Stock

Advisors Asset Management, Inc.'s Holding History (CIK: 0001297376)

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

Q4 2025

Shares 19,858 Value ($000) $2,583 Avg Close $143.19 Range $129.77 - $157.72

Q3 2025

Shares 24,188 Value ($000) $3,569 Avg Close $151.39 Range $135.34 - $172.55

Q2 2025

Shares 24,383 Value ($000) $4,102 Avg Close $159.72 Range $133.70 - $174.50

Q1 2025

Shares 27,288 Value ($000) $4,546 Avg Close $173.51 Range $159.29 - $194.88

Q4 2024

Shares 22,974 Value ($000) $3,798 Avg Close $157.91 Range $131.60 - $180.97

Q3 2024

Shares 14,216 Value ($000) $1,895 Avg Close $116.03 Range $101.61 - $135.78

Q2 2024

Shares 13,715 Value ($000) $1,727 Avg Close $131.69 Range $112.85 - $147.89

Q1 2024

Shares 9,009 Value ($000) $1,323 Avg Close $129.12 Range $107.57 - $153.93

Q4 2023

Shares 6,822 Value ($000) $800 Avg Close $93.21 Range $75.22 - $122.60

Q3 2023

Shares 3,049 Value ($000) $267 Avg Close $116.39 Range $83.03 - $164.16

Q2 2023

Shares 2,179 Value ($000) $359 Avg Close $174.09 Range $153.35 - $198.00

Q3 2022

Shares 3,404 Value ($000) $481 Avg Close $146.09 Range $122.68 - $172.74

Q2 2022

Shares 3,433 Value ($000) $449 Avg Close $133.79 Range $112.07 - $154.51

Q1 2022

Shares 7,249 Value ($000) $1,055 Avg Close $192.01 Range $133.94 - $291.15

Q4 2021

Shares 13,028 Value ($000) $3,814 Avg Close $284.79 Range $262.52 - $305.21

Q3 2021

Shares 14,456 Value ($000) $3,913 Avg Close $271.15 Range $241.42 - $288.27

Q2 2021

Shares 16,393 Value ($000) $3,974 Avg Close $228.17 Range $205.10 - $250.49

Q1 2021

Shares 21,736 Value ($000) $4,992 Avg Close $251.21 Range $217.65 - $284.86

Q4 2020

Shares 18,787 Value ($000) $5,042 Avg Close $249.38 Range $218.23 - $273.33

Q3 2020

Shares 14,574 Value ($000) $3,440 Avg Close $224.17 Range $203.81 - $248.88

Q2 2020

Shares 12,775 Value ($000) $2,913 Avg Close $219.47 Range $173.15 - $258.00

Q1 2020

Shares 8,720 Value ($000) $1,544 Avg Close $171.51 Range $143.90 - $187.85

Q4 2019

Shares 3,667 Value ($000) $580 Avg Close $150.33 Range $140.16 - $160.06

Q3 2019

Shares 2,673 Value ($000) $398 Avg Close $151.90 Range $139.36 - $160.25

Q2 2019

Shares 637 Value ($000) $95 Avg Close $137.22 Range $118.93 - $148.93

Q1 2014

Shares 1,600 Value ($000) $44 Avg Close $28.52 Range $25.08 - $32.20

Q4 2013

Shares 1,600 Value ($000) $47 Avg Close $27.99 Range $25.42 - $29.66

Q3 2013

Shares 1,600 Value ($000) $43 Avg Close $24.65 Range $21.21 - $27.17

Q2 2013

Shares 1,700 Value ($000) $36 Avg Close $21.04 Range $19.03 - $22.70

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	19,858	$2,583	$143.19	$129.77 - $157.72
Q3 2025	24,188	$3,569	$151.39	$135.34 - $172.55
Q2 2025	24,383	$4,102	$159.72	$133.70 - $174.50
Q1 2025	27,288	$4,546	$173.51	$159.29 - $194.88
Q4 2024	22,974	$3,798	$157.91	$131.60 - $180.97
Q3 2024	14,216	$1,895	$116.03	$101.61 - $135.78
Q2 2024	13,715	$1,727	$131.69	$112.85 - $147.89
Q1 2024	9,009	$1,323	$129.12	$107.57 - $153.93
Q4 2023	6,822	$800	$93.21	$75.22 - $122.60
Q3 2023	3,049	$267	$116.39	$83.03 - $164.16
Q2 2023	2,179	$359	$174.09	$153.35 - $198.00
Q3 2022	3,404	$481	$146.09	$122.68 - $172.74
Q2 2022	3,433	$449	$133.79	$112.07 - $154.51
Q1 2022	7,249	$1,055	$192.01	$133.94 - $291.15
Q4 2021	13,028	$3,814	$284.79	$262.52 - $305.21
Q3 2021	14,456	$3,913	$271.15	$241.42 - $288.27
Q2 2021	16,393	$3,974	$228.17	$205.10 - $250.49
Q1 2021	21,736	$4,992	$251.21	$217.65 - $284.86
Q4 2020	18,787	$5,042	$249.38	$218.23 - $273.33
Q3 2020	14,574	$3,440	$224.17	$203.81 - $248.88
Q2 2020	12,775	$2,913	$219.47	$173.15 - $258.00
Q1 2020	8,720	$1,544	$171.51	$143.90 - $187.85
Q4 2019	3,667	$580	$150.33	$140.16 - $160.06
Q3 2019	2,673	$398	$151.90	$139.36 - $160.25
Q2 2019	637	$95	$137.22	$118.93 - $148.93
Q1 2014	1,600	$44	$28.52	$25.08 - $32.20
Q4 2013	1,600	$47	$27.99	$25.42 - $29.66
Q3 2013	1,600	$43	$24.65	$21.21 - $27.17
Q2 2013	1,700	$36	$21.04	$19.03 - $22.70