MASIMO CORP insider transactions

What is a Form 4?

Animation: what a Form 4 is, shown with one real example. Sonic Automotive (SAH) reporting owner Paul P. Rusnak bought 13,701 shares at $59.78 on Wednesday, October 7, 2026, transaction code P, an open-market purchase (S is a sale and A is an award from the company). A timeline marks the SEC's two-business-day filing deadline, which ends Friday, October 9. The SEC accepted the Form 4 at 4:33:21 PM ET on October 9, and NexusTrade treats it as public one minute later, at 4:34:21 PM ET. A lamp for NexusTrade's InsiderTrades indicator stays off from the trade date until that moment, then counts one purchase worth 13,701 × $59.78 = $819,045.78. — In this example the shares were bought on Oct 7, 2026, and NexusTrade's InsiderTrades indicator can count the purchase starting at 4:34:21 PM ET on Oct 9, one minute after the SEC accepted the Form 4.

A Form 4 is the SEC filing a company insider, such as an officer, director or 10% owner, uses to report a trade in the company's stock, generally within two business days. The animation follows one real filing as an example: Paul P. Rusnak's purchase of Sonic Automotive (SAH) shares on October 7, 2026.

The same reading applies to every row on this page. The trade date is when the shares changed hands. The available date is when NexusTrade treats the filing as public, and a NexusTrade InsiderTrades indicator counts a purchase (code P) or sale (code S) only from that moment. Code A awards are not counted as purchases.

Recent insider disclosures

This table includes purchases, sales and awards in the public filing record. Awards and open-market purchases are distinct transaction codes. For historical research, use the public availability date to determine when the transaction was knowable.

Read code P as a purchase, S as a sale and A as an award. An award is an acquisition, but it is not an open-market purchase. Open the filing receipt to check the transaction details.

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Most recent 90-day source activity, up to 50 rows. No rows means no matching recent records, not no historical activity.

Officers and directors in the directory

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REYNOLDS CRAIG B	0001186476	16
KIANI JOE E	0001228621	122
Cohen H Michael	0001748664	1
Young Micah W	0001717871	9
McClenahan Thomas Samuel	0001575205	27
Coleman Jon	0001442689	47
Brennan Michelle	0001827353	10
CAHILL EDWARD L	0001025665	42
Al-Ali Ammar	0001403430	4
Allan Anthony	0001492050	2
Barker Steven	0001403429	21
Berthon Olivier	0001403428	4
Coleman Robert	0001403427	7
de Raad Mark	0001363597	23
Elmandjra Mohamed	0001403420	1
Fishel Rick	0001403402	23
FITCH SANFORD	0001198927	46
Jansen Paul	0001433095	14
Jellison William R	0001189883	26
Kilpatrick Christopher	0001403634	8
LASERSOHN JACK W	0001083925	67
Lee Yongsam	0001403400	57
Levy Tao	0001726857	1
Mikkelson Adam	0001687759	4
Muhsin Bilal	0001734507	20
Paul Stephen E.	0001456612	1
Sampath Anand	0001406493	18
Van Ramshorst David J	0001624132	23

Which transactions qualify for the company tracker

The company strategy uses verified officers and directors with qualifying acquisitions at this issuer. Other reporting owners may appear in source records without becoming strategy signals.

Strategy eligibility is held while filing coverage is unresolved.

Historical follower simulations are separate from these source transactions. They do not establish live trading results.