MASIMO CORP

Ticker: MASI CUSIP: 574795100 Class: Common Stock

Well Done, LLC's Holding History (CIK: 0001667132)

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

Q4 2018

Shares 232 Value ($000) $25 Avg Close $111.51 Range $98.23 - $126.89

Q1 2018

Shares 69 Value ($000) $6 Avg Close $87.17 Range $80.69 - $96.45

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2018	232	$25	$111.51	$98.23 - $126.89
Q1 2018	69	$6	$87.17	$80.69 - $96.45