MASI

Masimo Corporation$178.41-0.25 (-0.14%)

Prev Close$178.66·MCap$9.34B·P/E—·Vol603.3K·Yield—

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Buys (12M)

$468.5K

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Sells (12M)

$4.19M

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Net Activity

Net Seller

$3.72M

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Active Insiders

last 12 mo

Over the past 12 months, insider activity at Masimo Corporation (MASI) has been dominated by selling, with 2 insider purchases totaling $468.5K and 2 insider sales totaling $4.19M. The most recent insider transaction was by Sampath Anand (EVP, Ops & Clinical Research), who sold $2.56M worth of shares on Jan 28, 2026. Masimo Corporation operates in the Healthcare sector, within the Medical - Instruments & Supplies industry, with a market cap of $9.34B.

MASI Insider Trading Activity

Date	Insider	Role	Type	Shares	Avg Price	Value	Shares After
Jan 28, 2026	Sampath Anand	EVP, Ops & Clinical Research	Sell	18,680	$136.81	$2.56M	0
Aug 12, 2025	Brennan Michelle	Director	Buy	200	$152.80	$30.6K	0
Aug 11, 2025	Jellison William R	Director	Buy	3,000	$145.98	$437.9K	0
May 12, 2025	Muhsin Bilal	Chief Operating Officer	Sell	10,000	$163.28	$1.63M	0
Mar 14, 2025	REYNOLDS CRAIG B	Director	Sell	2,053	$166.13	$341.1K	0
Mar 10, 2025	Muhsin Bilal	Chief Operating Officer	Sell	30,000	$167.49	$5.02M	0
Mar 1, 2025	Muhsin Bilal	Chief Operating Officer	Sell	8,098	$188.77	$1.53M	0
Mar 1, 2025	Tripodi Blair	COO, Consumer Division	Sell	8,104	$188.77	$1.53M	0
Mar 1, 2025	Young Micah W	EVP & Chief Financial Officer	Sell	8,100	$188.77	$1.53M	0
Apr 30, 2024	REYNOLDS CRAIG B	Director	Sell	40,000	$136.17	$5.45M	7,406-84%
May 30, 2023	KIANI JOE E	CEO and Chairman of the Board	Buy	6,365	$157.16	$1.00M	366,055
Dec 19, 2022	KIANI JOE E	CEO and Chairman of the Board	Buy	7,040	$144.79	$1.02M	46,818
Nov 15, 2022	KIANI JOE E	CEO and Chairman of the Board	Buy	39,778	$125.03	$4.97M	39,778
Jan 26, 2022	Mikkelson Adam	Director	Sell	600	$214.80	$128.9K	1,751-26%
Jan 20, 2022	Mikkelson Adam	Director	Sell	600	$228.70	$137.2K	2,351
Jan 12, 2022	Mikkelson Adam	Director	Sell	600	$250.01	$150.0K	2,951
Nov 19, 2021	KIANI JOE E	CEO and Chairman of the Board	Sell	61,412	$300.42	$18.45M	541,428
Nov 16, 2021	KIANI JOE E	CEO and Chairman of the Board	Sell	38,588	$300.98	$11.61M	604,064
Nov 16, 2021	Young Micah W	EVP & Chief Financial Officer	Sell	3,700	$298.00	$1.10M	10,893-25%
Nov 5, 2021	KIANI JOE E	CEO and Chairman of the Board	Sell	4,373	$290.16	$1.27M	616,786
Nov 2, 2021	KIANI JOE E	CEO and Chairman of the Board	Sell	45,842	$291.15	$13.35M	616,986
Oct 28, 2021	KIANI JOE E	CEO and Chairman of the Board	Sell	49,785	$290.90	$14.48M	77,804-39%
May 13, 2021	McClenahan Thomas Samuel	EVP, GEN COUNSEL & CORP SEC	Buy	500	$214.40	$107.2K	23,571
May 4, 2021	McClenahan Thomas Samuel	EVP, GEN COUNSEL & CORP SEC	Buy	1,000	$231.62	$231.6K	23,071
Apr 12, 2021	Young Micah W	EVP & Chief Financial Officer	Sell	2,087	$239.00	$498.8K	14,593

MASI Insider Buying Activity

The following table shows recent insider purchases of Masimo Corporation (MASI) stock reported via SEC Form 4 filings.

Date	Insider	Role	Type	Shares	Avg Price	Value	Shares After
Aug 12, 2025	Brennan Michelle	Director	Buy	200	$152.80	$30.6K	0
Aug 11, 2025	Jellison William R	Director	Buy	3,000	$145.98	$437.9K	0
May 30, 2023	KIANI JOE E	CEO and Chairman of the Board	Buy	6,365	$157.16	$1.00M	366,055
Dec 19, 2022	KIANI JOE E	CEO and Chairman of the Board	Buy	7,040	$144.79	$1.02M	46,818
Nov 15, 2022	KIANI JOE E	CEO and Chairman of the Board	Buy	39,778	$125.03	$4.97M	39,778
May 13, 2021	McClenahan Thomas Samuel	EVP, GEN COUNSEL & CORP SEC	Buy	500	$214.40	$107.2K	23,571
May 4, 2021	McClenahan Thomas Samuel	EVP, GEN COUNSEL & CORP SEC	Buy	1,000	$231.62	$231.6K	23,071

MASI Insider Selling Activity

The following table shows recent insider sales of Masimo Corporation (MASI) stock reported via SEC Form 4 filings.

Date	Insider	Role	Type	Shares	Avg Price	Value	Shares After
Jan 28, 2026	Sampath Anand	EVP, Ops & Clinical Research	Sell	18,680	$136.81	$2.56M	0
May 12, 2025	Muhsin Bilal	Chief Operating Officer	Sell	10,000	$163.28	$1.63M	0
Mar 14, 2025	REYNOLDS CRAIG B	Director	Sell	2,053	$166.13	$341.1K	0
Mar 10, 2025	Muhsin Bilal	Chief Operating Officer	Sell	30,000	$167.49	$5.02M	0
Mar 1, 2025	Muhsin Bilal	Chief Operating Officer	Sell	8,098	$188.77	$1.53M	0
Mar 1, 2025	Tripodi Blair	COO, Consumer Division	Sell	8,104	$188.77	$1.53M	0
Mar 1, 2025	Young Micah W	EVP & Chief Financial Officer	Sell	8,100	$188.77	$1.53M	0
Apr 30, 2024	REYNOLDS CRAIG B	Director	Sell	40,000	$136.17	$5.45M	7,406-84%
Jan 26, 2022	Mikkelson Adam	Director	Sell	600	$214.80	$128.9K	1,751-26%
Jan 20, 2022	Mikkelson Adam	Director	Sell	600	$228.70	$137.2K	2,351
Jan 12, 2022	Mikkelson Adam	Director	Sell	600	$250.01	$150.0K	2,951
Nov 19, 2021	KIANI JOE E	CEO and Chairman of the Board	Sell	61,412	$300.42	$18.45M	541,428
Nov 16, 2021	KIANI JOE E	CEO and Chairman of the Board	Sell	38,588	$300.98	$11.61M	604,064
Nov 16, 2021	Young Micah W	EVP & Chief Financial Officer	Sell	3,700	$298.00	$1.10M	10,893-25%
Nov 5, 2021	KIANI JOE E	CEO and Chairman of the Board	Sell	4,373	$290.16	$1.27M	616,786
Nov 2, 2021	KIANI JOE E	CEO and Chairman of the Board	Sell	45,842	$291.15	$13.35M	616,986
Oct 28, 2021	KIANI JOE E	CEO and Chairman of the Board	Sell	49,785	$290.90	$14.48M	77,804-39%
Apr 12, 2021	Young Micah W	EVP & Chief Financial Officer	Sell	2,087	$239.00	$498.8K	14,593