Whitehead Warren
SEC insider (Form 3/4/5 filer). CIK 0001761449. Insider at Aptose Biosciences Inc. (APTO). 1 reported Form 4/5 transaction since Sep 2024; latest on Jun 30, 2026. Located in TORONTO.
Companies Whitehead Warren has filed insider reports for
- Aptose Biosciences Inc. (APTO)
Whitehead Warren
CIK: 0001761449
Transaction Breakdown
Open Market Buys (P)0 (0.0%)
High conviction signal
Open Market Sales (S)0 (0.0%)
Position reduction
Option Exercises (M)0 (0.0%)
Derivative conversions
Awards (A)0 (0.0%)
Compensation grants
Other (G, F, J, C, D, …)1 (100.0%)
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
APTO
Aptose Biosciences Inc.