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Stein Jeffrey insider trades
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Stein Jeffrey insider trades

Stein Jeffrey has filed 26 Form 4s with the SEC that we hold, for CDTX (President & CEO, Director), IDEAYA Biosciences, Inc. (IDYA) (Director) and PRTK (Director). Across all of them we count 11 purchases worth $2.4M and 1 sale worth $13.3K reported on Form 4. In the last 12 months: 1 purchase ($1.6M) and 0 sales ($0). The largest single trade was a purchase of 50,000 shares of IDEAYA Biosciences, Inc. worth $1.6M, dated 2026-03-02. The first filing on our record is dated 2021-08-19 and the latest 2026-06-18.

CDTX

President & CEO, Director · 16 filings · 10 purchases and sales
Trade dateCodeSharesValue as filedFiled
2017-03-31P, purchase reported on Form 4645$100.0K2026-01-07
2017-06-05P, purchase reported on Form 4750$89.2K2026-01-07
2017-09-12P, purchase reported on Form 4367$49.8K2026-01-07
2020-11-10P, purchase reported on Form 42,500$100.0K2026-01-07
2021-08-18P, purchase reported on Form 440,000$68.8K2021-08-19
2021-08-19P, purchase reported on Form 410,000$17.9K2021-08-19
2021-11-12P, purchase reported on Form 450,000$79.5K2021-11-15
2023-03-27P, purchase reported on Form 450,000$52.0K2023-03-27
2023-08-08P, purchase reported on Form 450,000$48.0K2023-08-08
2024-06-07P, purchase reported on Form 48,000$105.7K2024-06-11

IDEAYA Biosciences, Inc. (IDYA)

Director · 6 filings · 1 purchase or sale
Trade dateCodeSharesValue as filedFiled
2026-03-02P, purchase reported on Form 450,000$1.6M2026-03-02

PRTK

Director · 4 filings · 1 purchase or sale
Trade dateCodeSharesValue as filedFiled
2023-02-21S, sale reported on Form 47,000$13.3K2023-02-23
Source

Counted from the Form 4 filings this reporting owner (SEC CIK 1478831) filed on EDGAR. Values are the transaction values as filed. See every filing on EDGAR, or browse insider buying and today's insider purchases.

Source: U.S. Securities and Exchange Commission (EDGAR) and other official government data · Updated 2026-10-12 · For informational purposes only, not investment advice.
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