Stein Jeffrey
SEC insider (Form 3/4/5 filer). CIK 0001478831. Director at IDEAYA Biosciences, Inc. (IDYA) and 1 other issuer. 28 reported Form 4/5 transactions since Sep 2024; latest on Jun 16, 2026. Located in SOUTH SAN FRANCISCO, CA.
Companies Stein Jeffrey has filed insider reports for
- IDEAYA Biosciences, Inc. (IDYA): Director
- Cidara Therapeutics, Inc. (CDTX): Director, Officer, President & CEO
Stein Jeffrey
CIK: 0001478831
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Discretionary Trading P&L
Holdings
Transaction History (28 total)
- Jun 16, 2026IDYA
IDEAYA Biosciences, Inc.
AwardDirectStock Option (right to buy)
20K shares- - Mar 2, 2026IDYA
IDEAYA Biosciences, Inc.
PurchaseDirect50K shares at avg. $32.96$1.6M - Jan 7, 2026CDTX
Cidara Therapeutics, Inc.
DispositionIndirect67.5K shares at avg. $221.50$15.0M - Jan 7, 2026CDTX
Cidara Therapeutics, Inc.
DispositionDirect5.8K shares at avg. $221.50$1.3M - Jan 7, 2026CDTX
Cidara Therapeutics, Inc.
DispositionIndirect2.4K shares at avg. $221.50$527K - Dec 22, 2025CDTX
Cidara Therapeutics, Inc.
GiftIndirect5.4K shares- - Dec 19, 2025CDTX
Cidara Therapeutics, Inc.
GiftIndirect10.6K shares- - Dec 19, 2025CDTX
Cidara Therapeutics, Inc.
GiftDirect10.6K shares- - Dec 17, 2025CDTX
Cidara Therapeutics, Inc.
GiftDirect2.2K shares- - Dec 17, 2025CDTX
Cidara Therapeutics, Inc.
GiftIndirect2.2K shares-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Jun 16, 2026 |  IDYA IDEAYA Biosciences, Inc. | Award Stock Option (right to buy) | 20,000 | - | - | Direct |
| Mar 2, 2026 | IDYA IDEAYA Biosciences, Inc. | Purchase | 50,000 | $32.96 | $1,647,890 | Direct |
| Jan 7, 2026 |  CDTX Cidara Therapeutics, Inc. | Disposition | 67,498 | $221.50 | $14,950,807 | Indirect |
| Jan 7, 2026 | CDTX Cidara Therapeutics, Inc. | Disposition | 5,763 | $221.50 | $1,276,505 | Direct |
| Jan 7, 2026 | CDTX Cidara Therapeutics, Inc. | Disposition | 2,379 | $221.50 | $526,949 | Indirect |
| Dec 22, 2025 | CDTX Cidara Therapeutics, Inc. | Gift | 5,425 | - | - | Indirect |
| Dec 19, 2025 | CDTX Cidara Therapeutics, Inc. | Gift | 10,638 | - | - | Indirect |
| Dec 19, 2025 | CDTX Cidara Therapeutics, Inc. | Gift | 10,638 | - | - | Direct |
| Dec 17, 2025 | CDTX Cidara Therapeutics, Inc. | Gift | 2,244 | - | - | Direct |
| Dec 17, 2025 | CDTX Cidara Therapeutics, Inc. | Gift | 2,244 | - | - | Indirect |
1-10 of 28 transactions