Stein Jeffrey
- SEC CIK
- 0001478831
In the past year, 2 open-market purchase filings worth $1.99M and no sales.
Current role at each company
- IDYA IDEAYA Biosciences, Inc.Directoras of Jun 18, 2026
- CDTX Cidara Therapeutics, Inc.President & CEOas of Jan 7, 2026
- PRTK Paratek Pharmaceuticals, Inc.Directoras of Sep 21, 2023
Open-market trades in the past year
Open-market purchases (P) and sales (S) filed in the last 365 days, not counting derivative securities or duplicate filings. Values leave out price outliers.
- Bought
- $1.99M
- 2 filings
- Sold
- –
- 0 filings
- Net
- +$1.99M
- Bought minus sold
- Companies
- 2
- With open-market trades
Trades
Every Form 4 that lists Stein Jeffrey as a reporting owner, including filings made jointly with others, grouped by company. Each row adds up one type of transaction in one filing. Only open-market purchases (P) and sales (S) are shown by default.
IDYA IDEAYA Biosciences, Inc.
Director1 trade
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Mar 2, 2026 (view filing) | Mar 2 | Same day | Stein JeffreyDirector | PPurchase | +50.0K | $32.96 | +$1.65M | +1,168.0%54.3K after |
CDTX Cidara Therapeutics, Inc.
President & CEO6 trades
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Jan 7, 2026 (view filing) | Mar 31, 2017-Nov 10, 2020 | 3,204 daysLate | Stein JeffreyPresident & CEO | PPurchase | +4.26K | $79.55 | +$339.1K | +6.5%69.4K after | 4 lots |
| Jun 11, 2024 (view filing) | Jun 7 | 4 days | Stein JeffreyPresident & CEO | PPurchase | +8.00K | $13.21 | +$105.7K | +48.3%24.6K after | |
| Aug 8, 2023 (view filing) | Aug 8 | Same day | Stein JeffreyPresident & CEO | PPurchase | +50.0K | $0.96 | +$48.0K | +17.8%331.6K after | |
| Mar 27, 2023 (view filing) | Mar 27 | Same day | Stein JeffreyPresident & CEO | PPurchase | +50.0K | $1.04 | +$52.0K | +21.6%281.6K after | |
| Nov 15, 2021 (view filing) | Nov 12 | 3 days | Stein JeffreyPresident & CEO | PPurchase | +50.0K | $1.59 | +$79.5K | +12.0%465.9K after | |
| Aug 19, 2021 (view filing) | Aug 18-19 | 1 day | Stein JeffreyPresident & CEO | PPurchase | +50.0K | $1.73 | +$86.7K | +13.7%415.9K after | 2 lots |
PRTK Paratek Pharmaceuticals, Inc.
Director1 trade
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Feb 23, 2023 (view filing) | Feb 21 | 2 days | Stein JeffreyDirector | SSale | −7.00K | $1.90 | −$13.3K | −9.3%68.6K after |