Su Zhen
SEC insider (Form 3/4/5 filer). CIK 0001991642. Director at CytomX Therapeutics, Inc. (CTMX) and 1 other issuer. 4 reported Form 4/5 transactions since Sep 2024; latest on Jun 17, 2026. Located in SOUTH SAN FRANCISCO, CA.
Companies Su Zhen has filed insider reports for
- CytomX Therapeutics, Inc. (CTMX): Director
- Karyopharm Therapeutics Inc. (KPTI): Director
Su Zhen
CIK: 0001991642
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 (4 total)
- Jun 17, 2026CTMX
CytomX Therapeutics, Inc.
AwardDirectStock Option (Right to Buy)
59K shares- - May 21, 2026KPTI
Karyopharm Therapeutics Inc.
AwardDirect15.5K shares- - Jun 11, 2025CTMX
CytomX Therapeutics, Inc.
AwardDirectStock Option (Right to Buy)
38K shares- - May 28, 2025KPTI
Karyopharm Therapeutics Inc.
AwardDirectNonstatutory Stock Option (right to buy)
4.6K shares-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Jun 17, 2026 |  CTMX CytomX Therapeutics, Inc. | Award Stock Option (Right to Buy) | 59,000 | - | - | Direct |
| May 21, 2026 |  KPTI Karyopharm Therapeutics Inc. | Award | 15,508 | - | $0 | Direct |
| Jun 11, 2025 | CTMX CytomX Therapeutics, Inc. | Award Stock Option (Right to Buy) | 38,000 | - | - | Direct |
| May 28, 2025 | KPTI Karyopharm Therapeutics Inc. | Award Nonstatutory Stock Option (right to buy) | 4,600 | - | - | Direct |
1-4 of 4 transactions