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Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON , D.C. 20549 FORM 10 - Q ( Mark One ) ☑ 1934 ☐ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF For the quarterly period ended July 3 , 2021 OR TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-33642 ✔MASIMO MASIMO CORPORATION ( Exact Name of Registrant as Specified in its Charter ) Delaware ( State or Other Jurisdiction of Incorporation or Organization ) 52 Discovery Irvine , California ( Address of Principal Executive Offices ) ( 949 ) 297-7000 ( Registrant's Telephone Number , Including Area Code ) Securities Registered pursuant to Section 12 ( b ) of the Act : Title of each class Trading Symbol ( s ) . MASI 33-0368882 ( I.R.S. Employer Identification Number ) 92618 ( Zip Code ) Name of each exchange on which registered The Nasdaq Stock Market LLC Common Stock , $ 0.001 par value Indicate by check mark whether the registrant ( 1 ) has filed all reports required to be filed by Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 during the preceding 12 months ( or for such shorter period that the registrant was required to file such reports ) , and ( 2 ) has been subject to such filing requirements for the past 90 days . Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S - T ( § 232.405 of this chapter ) during the preceding 12 months ( or for such shorter period that the registrant was required to submit such files ) . Yes ☑ No ☐ Yes ☑ No ☐ Indicate by check mark whether the registrant is a large accelerated filer , an accelerated filer , a non - accelerated filer , smaller reporting company , or an emerging growth company . See the definitions of " large accelerated filer , ” “ accelerated filer , ” “ smaller reporting company , " and " emerging growth company ” in Rule 12b - 2 of the Exchange Act . Large accelerated filer ☑ Non - accelerated filer ☐ Accelerated filer Smaller reporting company Emerging growth company If an emerging growth company , indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13 ( a ) of the Exchange Act . Indicate by check mark whether the registrant is a shell company ( as defined in Rule 12b - 2 of the Exchange Act . ) Yes ☐ No Indicate the number of shares outstanding of each of the issuer's classes of common stock , as of the latest practicable date : Number of Shares Outstanding as of July 3 , 2021 Class Common stock , $ 0.001 par value 55,056,901 ☑