William D. Clark

CIK: 0001355415

Transaction Breakdown

Open Market Buys (P)1 (14.3%)

High conviction signal

Open Market Sales (S)0 (0.0%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)6 (85.7%)

Compensation grants

Other (G, F, J, C, D, …)0 (0.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (2)

IBIO

iBio, Inc.

Director

ALDX

Aldeyra Therapeutics, Inc.

Director

Discretionary Trading P&L

Holdings

Transaction History (7 total)

IBIO
iBio, Inc.
Oct 14, 2026
Award(A)
Stock Option (right to buy)
Direct
38K shares-
ALDX
Aldeyra Therapeutics, Inc.
Jun 9, 2026
Award(A)
Stock Option (Right to Buy)
Direct
70K shares-
ALDX
Aldeyra Therapeutics, Inc.
Jun 9, 2026
Award(A)
Stock Option (Right to Buy)
Direct
2.3K shares-
IBIO
iBio, Inc.
Nov 20, 2025
Award(A)
Stock Option (right to buy)
Direct
13.5K shares-
ALDX
Aldeyra Therapeutics, Inc.
Apr 17, 2025
Award(A)
Stock Option (Right to Buy)
Direct
76.8K shares-
IBIO
iBio, Inc.
Jan 10, 2025
Purchase(P)
Direct
1.8K shares at avg. $2.72$5K
IBIO
iBio, Inc.
Nov 21, 2024
Award(A)
Stock Option (right to buy)
Direct
18.9K shares-

		Type	Shares	Price		Ownership
Oct 14, 2026	IBIO iBio, Inc.	Award(A) Stock Option (right to buy)	38,000	-	-	Direct
Jun 9, 2026	ALDX Aldeyra Therapeutics, Inc.	Award(A) Stock Option (Right to Buy)	70,000	-	-	Direct
Jun 9, 2026	ALDX Aldeyra Therapeutics, Inc.	Award(A) Stock Option (Right to Buy)	2,323	-	-	Direct
Nov 20, 2025	IBIO iBio, Inc.	Award(A) Stock Option (right to buy)	13,500	-	-	Direct
Apr 17, 2025	ALDX Aldeyra Therapeutics, Inc.	Award(A) Stock Option (Right to Buy)	76,760	-	-	Direct
Jan 10, 2025	IBIO iBio, Inc.	Purchase(P)	1,838	$2.72	$4,999	Direct
Nov 21, 2024	IBIO iBio, Inc.	Award(A) Stock Option (right to buy)	18,900	-	-	Direct

1-7 of 7 transactions

About Clark William D

Clark William D (SEC CIK 0001355415) files insider reports with the SEC as Director of iBio, Inc. (IBIO) and Director of Aldeyra Therapeutics, Inc. (ALDX).

Signal8 holds 7 ownership filings by Clark William D (1 Form 3, 6 Form 4), filed between Nov 25, 2024 and Oct 15, 2026. Those filings report 7 transactions, from Nov 21, 2024 to Oct 14, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Clark William D's filings is in SAN DIEGO, CA.

Recent filings by Clark William D

Oct 14, 2026: Grant or award of IBIO derivative securities (Form 4, code A).
Jun 9, 2026: Grants or awards of ALDX derivative securities (2 lines, Form 4, code A).
Nov 20, 2025: Grant or award of IBIO derivative securities (Form 4, code A).
Apr 17, 2025: Grant or award of ALDX derivative securities (Form 4, code A).
Jan 10, 2025: Open-market purchase of IBIO shares (Form 4, code P).

Other insiders filing for iBio, Inc. (IBIO)

Stoner Elizabeth, Director
Kropotova Alexandra, Director
Arkowitz David, Director
Parada Antonio Bernardino Guimaraes, Director
Sender Gary, Director
Carr Molly, Chief Medical Officer

How to read Form 4 transaction codes