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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
937556	Masimo Corp	MASI	Electromedical & Electrotherapeutic Apparatus (3845)	330368882

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1624132	J David Ramshorst Van	C/O Masimo Corporation 52 Discovery Irvine CA 92618	Chief Accounting Officer	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock	Acquisiton	2018-09-24	1,325	$29.33	2,325	No	4	M	Direct
Common Stock	Disposition	2018-09-24	1,325	$122.56	1,000	No	4	S	Direct
Common Stock	Acquisiton	2018-09-24	1,000	$85.54	2,000	No	4	M	Direct
Common Stock	Disposition	2018-09-24	1,000	$123.17	1,000	No	4	S	Direct
Common Stock	Acquisiton	2018-09-24	350	$29.33	1,350	No	4	M	Direct
Common Stock	Disposition	2018-09-24	350	$123.17	1,000	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	M	Direct
No	4	S	Direct
No	4	M	Direct
No	4	S	Direct
No	4	M	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Non-Qualified Stock Option (Right to Buy)	Disposition	2018-09-24	1,325	$29.33	1,325	$29.33
Common Stock	Non-Qualified Stock Option (Right to Buy)	Disposition	2018-09-24	1,000	$85.54	1,000	$85.54
Common Stock	Non-Qualified Stock Option (Right to Buy)	Disposition	2018-09-24	350	$29.33	350	$29.33

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
16,675	2014-12-30	2023-12-30	No	4	M	Direct
4,000	2018-08-14	2027-08-14	No	4	M	Direct
16,325	2014-12-30	2023-12-30	No	4	M	Direct

Footnotes

The shares covered by this Form 4 were exercised and sold pursuant to a Rule 10b5-1 Sales Plan dated as of September 5, 2018, which is intended to comply with Rule 10b5-1 promulgated under the Securities Exchange Act of 1934, as amended.
The price reported in Column 4 represents the weighted average sales price per share. The actual sales prices ranged from a low of $122.58 per share to a high of $123.86 per share. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.
This option was granted on December 30, 2013 and is exercisable as the option vests. This option vests over a five year period, with 20% of the shares subject to the option vesting on each anniversary of the grant date.
This option was granted on August 14, 2017 and is exercisable as the option vests. The option vests over a five year period, with 20% of the shares subject to the option vesting on each anniversary of the grant date.