MASIMO CORP

Ticker: MASI CUSIP: 574795100 Class: Common Stock

LORD, ABBETT & CO. LLC's Holding History (CIK: 0000728100)

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

Q1 2020

Shares 174,887 Value ($000) $30,976 Avg Close $171.51 Range $143.90 - $187.85

Q4 2019

Shares 171,685 Value ($000) $27,137 Avg Close $150.33 Range $140.16 - $160.06

Q3 2019

Shares 136,217 Value ($000) $20,268 Avg Close $151.90 Range $139.36 - $160.25

Q2 2019

Shares 220,933 Value ($000) $32,879 Avg Close $137.22 Range $118.93 - $148.93

Q1 2019

Shares 222,989 Value ($000) $30,835 Avg Close $125.54 Range $101.87 - $139.48

Q4 2018

Shares 296,236 Value ($000) $31,807 Avg Close $111.51 Range $98.23 - $126.89

Q4 2016

Shares 235,512 Value ($000) $15,874 Avg Close $61.46 Range $53.78 - $68.88

Q3 2016

Shares 312,334 Value ($000) $18,581 Avg Close $56.42 Range $51.10 - $60.52

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2020	174,887	$30,976	$171.51	$143.90 - $187.85
Q4 2019	171,685	$27,137	$150.33	$140.16 - $160.06
Q3 2019	136,217	$20,268	$151.90	$139.36 - $160.25
Q2 2019	220,933	$32,879	$137.22	$118.93 - $148.93
Q1 2019	222,989	$30,835	$125.54	$101.87 - $139.48
Q4 2018	296,236	$31,807	$111.51	$98.23 - $126.89
Q4 2016	235,512	$15,874	$61.46	$53.78 - $68.88
Q3 2016	312,334	$18,581	$56.42	$51.10 - $60.52