Insider holders · CIK 0000882361
Aptose Biosciences Inc. · APTOF
Every insider with a reported Table I holding at this company, ranked by their last-reported share count. A balance is only as fresh as its filing — the report date sits next to every row on purpose. ← Back to activity
| Insider | Direct shares | Indirect shares | Total reported | Last report (ET) | From |
|---|---|---|---|---|---|
| Gregory K. ChowSenior VP & CFO | 112,014 | — | 112,014 | Dec 21, 2018 · 8:53 pm EST | Form 3 |
| Rafael Bejarrelationship not stated | 0 | — | 0 | Jul 1, 2026 · 4:34 pm EDT | Form 4 |
| Bernd R. Seizingerrelationship not stated | 0 | — | 0 | Jul 2, 2026 · 11:01 am EDT | Form 4 |
| William G. RiceChair, President & CEO | 0 | — | 0 | Jul 1, 2026 · 5:01 pm EDT | Form 4 |
| Warren Whiteheadrelationship not stated | 0 | — | 0 | Jul 1, 2026 · 5:09 pm EDT | Form 4 |
| Mark D. Vincentrelationship not stated | 0 | — | 0 | Jul 1, 2026 · 5:03 pm EDT | Form 4 |
| Fletcher Paynerelationship not stated | 0 | 0 | 0 | Jul 1, 2026 · 4:49 pm EDT | Form 4 |
| Erich Platzerrelationship not stated | 0 | — | 0 | Jul 1, 2026 · 4:55 pm EDT | Form 4 |
| Denis R Burgerrelationship not stated | 0 | — | 0 | Jul 1, 2026 · 4:47 pm EDT | Form 4 |
Balances come from each insider’s most recent filing that reports a Table I holding; an insider who left the company years ago still appears with their last-known figure and its date. Indirect totals collapse multiple vehicles (trusts, LLCs) into one number — open the filing for the breakdown. Shares as filed, not split-adjusted.