Clark William D
SEC insider (Form 3/4/5 filer). CIK 0001355415. Director at iBio, Inc. (IBIO) and 1 other issuer. 7 reported Form 4/5 transactions since Sep 2024; latest on Oct 14, 2026. Located in SAN DIEGO, CA.
Companies Clark William D has filed insider reports for
- iBio, Inc. (IBIO): Director
- Aldeyra Therapeutics, Inc. (ALDX): Director
Clark William D
CIK: 0001355415
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 (7 total)
- Oct 14, 2026IBIO
iBio, Inc.
AwardDirectStock Option (right to buy)
38K shares- - Jun 9, 2026ALDX
Aldeyra Therapeutics, Inc.
AwardDirectStock Option (Right to Buy)
70K shares- - Jun 9, 2026ALDX
Aldeyra Therapeutics, Inc.
AwardDirectStock Option (Right to Buy)
2.3K shares- - Nov 20, 2025IBIO
iBio, Inc.
AwardDirectStock Option (right to buy)
13.5K shares- - Apr 17, 2025ALDX
Aldeyra Therapeutics, Inc.
AwardDirectStock Option (Right to Buy)
76.8K shares- - Jan 10, 2025IBIO
iBio, Inc.
PurchaseDirect1.8K shares at avg. $2.72$5K - Nov 21, 2024IBIO
iBio, Inc.
AwardDirectStock Option (right to buy)
18.9K shares-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Oct 14, 2026 |  IBIO iBio, Inc. | Award Stock Option (right to buy) | 38,000 | - | - | Direct |
| Jun 9, 2026 |  ALDX Aldeyra Therapeutics, Inc. | Award Stock Option (Right to Buy) | 70,000 | - | - | Direct |
| Jun 9, 2026 | ALDX Aldeyra Therapeutics, Inc. | Award Stock Option (Right to Buy) | 2,323 | - | - | Direct |
| Nov 20, 2025 | IBIO iBio, Inc. | Award Stock Option (right to buy) | 13,500 | - | - | Direct |
| Apr 17, 2025 | ALDX Aldeyra Therapeutics, Inc. | Award Stock Option (Right to Buy) | 76,760 | - | - | Direct |
| Jan 10, 2025 | IBIO iBio, Inc. | Purchase | 1,838 | $2.72 | $4,999 | Direct |
| Nov 21, 2024 | IBIO iBio, Inc. | Award Stock Option (right to buy) | 18,900 | - | - | Direct |
1-7 of 7 transactions