STANDARD BIOTOOLS INC. 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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Black Jeffrey G.	0001449439	24
Casdin Partners FO1-MSV, LP	0001938709	21
Casdin Capital, LLC	0001534261	103
Casdin Partners GP, LLC	0001534260	100
Casdin Private Growth Equity Fund II, L.P.	0001891102	52
Casdin Private Growth Equity Fund, L.P.	0001823061	51
Mackay Sean	0001875501	4
Casdin Eli	0001534264	107
JOG VIKRAM	0001222641	52
Egholm Michael	0001559779	18
BARTHELEMY NICOLAS	0001283576	72
Casdin Amplify Fund, LP	0002028254	16
Casdin Partners Master Fund, L.P.	0001534265	103
CASDIN PRIVATE GROWTH EQUITY FUND GP, LLC	0001864554	51
Casdin Private Growth Equity Fund II GP, LLC	0001919480	52
COLELLA SAMUEL D	0001201580	81
JONES EVAN/ FA	0001020741	1,161
JONES ROBERT C	0001222642	39
Kim Hanjoon Alex	0001919209	3
Linthwaite Stephen Christopher	0001680808	4
McPhail Steven	0001641858	1
Smith William Maxwell	0001435931	79
Walder Fredric T	0001380208	85
Worthington Gajus Vincent	0001435768	60
Yow Mai Chan	0001435767	21

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.