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SEC Form 4 research

SUTRO BIOPHARMA, INC. insider transactions

Inspect SUTRO BIOPHARMA, INC.'s public SEC insider acquisitions and sales, reporting owners and source receipts.

As of 2026-10-15T08:02:39.132Z

Issuer CIK
0001382101
Reporting owners
48
Officers and directors
11
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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

Show the table · 13 rows, 3 columns

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MOLINA ARTURO MD000139894017
Chow Gregory K.00017613335
Shtylla Brunilda00019669152
Vasquez Nicki00018775852
NEWELL WILLIAM J00013096602
FITZPATRICK LINDA A00011889531
Chung Jane00018723981
Freund John Gordon000129677195
Gerber Hans-Peter00019929791
Hallam Trevor000132659217
MATSUI CONNIE000123653725
Pauling David00020636331
Petree Daniel H00012949394
MOLINA ARTURO MD ↗Chow Gregory K. ↗Shtylla Brunilda ↗Vasquez Nicki ↗NEWELL WILLIAM J ↗FITZPATRICK LINDA A ↗Chung Jane ↗Freund John Gordon ↗Gerber Hans-Peter ↗Hallam Trevor ↗MATSUI CONNIE ↗Pauling David ↗Petree Daniel H ↗

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.