Sierra Oncology, 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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Vivo Ventures Fund VII, L.P.	0001509160	39
Topper James N	0001341382	967
Richardson Joshua	0001793762	1
Turner William D.	0001819688	10
You Angie	0001647664	3
Vivo Opportunity, LLC	0001728970	104
Klencke Barbara	0001647647	9
Sinclair Andrew	0001762451	6
Collard Craig A	0001363558	14
DILLY STEPHEN GEORGE	0001389147	32
Thompson Peter A.	0001357522	111
Vivo Capital Fund IX, L.P.	0001750117	17
Aggarwal Gaurav	0001551965	4
Allen Andrew R	0001374539	12
Cha Albert	0001397906	31
Chapman Wendy	0001647652	3
Glover Nicholas	0001578888	1
ISALY SAMUEL D	0001055949	417
Lovejoy Chandra D	0001509420	15
ORBIMED ADVISORS LLC	0001055951	1,020
OrbiMed Private Investments V, LP	0001589316	1
Rodigueza Wendi	0001647663	3
Thomson Mary Christina	0001295674	7
Vivo Capital IX, LLC	0001750698	17
Vivo Ventures VII Affiliates Fund, L.P.	0001538309	39
VIVO VENTURES VII, LLC	0001565020	42

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.