LIVE FROM THE DATABASETRANSACTIONS 362,430COMPANIES 5,763LATEST TRADE Oct 16UPDATED Oct 17, 12:31 AM
APTOCIK 0000882361

Aptose Biosciences Inc.

72 transactions by 8 insiders, from June 13, 2026 to June 30, 2026.

Foreign issuer. Form 4 never states a currency, so these prices may be reported in the local currency rather than dollars — the amounts below are excluded from site-wide totals.

Transactions
728 insiders
Bought · P
Nonenobody bought on the open market
Sold · S
Nonenobody sold on the open market
Net
+$0net buying

Officers and directors

People inside the company. What they do with their own shares is the reason this data exists.

InsiderTradesPlannedBoughtSold
William G. RiceCEO13———

Large holders and funds

Holders above 10%, often funds. They file the same form, but they trade for portfolio reasons, not because of what they know.

InsiderTradesPlannedBoughtSold
Denis R. BurgerOther11———
Erich PlatzerOther11———
Mark D. VincentOther11———
Warren WhiteheadOther10———
Rafael BejarOther7———
Fletcher PayneOther5———
Bernd R. SeizingerOther4———

All transactions

72 in total, newest filings first.

InsiderDateCodeSharesPriceValue
Bernd R. SeizingerOtherDERIVJun 30D50,000$0.00—?
Bernd R. SeizingerOtherDERIVJun 30D100,000$0.00—?
Bernd R. SeizingerOtherDERIVJun 30D3,333$0.00—?
Bernd R. SeizingerOtherJun 30D17,000$1.72$29KFX
Warren WhiteheadOtherDERIVJun 30D53,000$0.00—?
Warren WhiteheadOtherDERIVJun 30D40,000$0.00—?
Warren WhiteheadOtherDERIVJun 30D152,500$0.00—?
Warren WhiteheadOtherDERIVJun 30D50,000$0.00—?
Warren WhiteheadOtherDERIVJun 30D50,000$0.00—?
Warren WhiteheadOtherDERIVJun 30D50,000$0.00—?
Warren WhiteheadOtherDERIVJun 30D50,000$0.00—?
Warren WhiteheadOtherDERIVJun 30D100,000$0.00—?
Warren WhiteheadOtherDERIVJun 30D3,333$0.00—?
Warren WhiteheadOtherJun 30D33$1.72$57FX
Mark D. VincentOtherDERIVJun 30D50,000$0.00—?
Mark D. VincentOtherDERIVJun 30D60,000$0.00—?
Mark D. VincentOtherDERIVJun 30D5,000$0.00—?
Mark D. VincentOtherDERIVJun 30D10,000$0.00—?
Mark D. VincentOtherDERIVJun 30D40,000$0.00—?
Mark D. VincentOtherDERIVJun 30D154,000$0.00—?
Mark D. VincentOtherDERIVJun 30D50,000$0.00—?
Mark D. VincentOtherDERIVJun 30D50,000$0.00—?
Mark D. VincentOtherDERIVJun 30D100,000$0.00—?
Mark D. VincentOtherDERIVJun 30D3,333$0.00—?
Mark D. VincentOtherJun 13D14$1.72$24FX
William G. RiceCEODERIVJun 30D400,000$0.00—?
William G. RiceCEODERIVJun 30D300,000$0.00—?
William G. RiceCEODERIVJun 30D50,000$0.00—?
William G. RiceCEODERIVJun 30D100,000$0.00—?
William G. RiceCEODERIVJun 30D400,000$0.00—?
William G. RiceCEODERIVJun 30D2,000,000$0.00—?
William G. RiceCEODERIVJun 30D343,000$0.00—?
William G. RiceCEODERIVJun 30D700,000$0.00—?
William G. RiceCEODERIVJun 30D600,000$0.00—?
William G. RiceCEODERIVJun 30D400,000$0.00—?
William G. RiceCEODERIVJun 30D50,000$0.00—?
William G. RiceCEODERIVJun 30D70,000$0.00—?
William G. RiceCEOJun 30D613,252$1.72$1.1MFX
Erich PlatzerOtherDERIVJun 30D60,000$0.00—?
Erich PlatzerOtherDERIVJun 30D5,000$0.00—?
Erich PlatzerOtherDERIVJun 30D10,000$0.00—?
Erich PlatzerOtherDERIVJun 30D40,000$0.00—?
Erich PlatzerOtherDERIVJun 30D135,000$0.00—?
Erich PlatzerOtherDERIVJun 30D50,000$0.00—?
Erich PlatzerOtherDERIVJun 30D50,000$0.00—?
Erich PlatzerOtherDERIVJun 30D50,000$0.00—?
Erich PlatzerOtherDERIVJun 30D100,000$0.00—?
Erich PlatzerOtherDERIVJun 30D3,333$0.00—?
Erich PlatzerOtherJun 30D1,122$1.72$2KFX
Fletcher PayneOtherDERIVJun 30D1,000,000$0.00—?
Fletcher PayneOtherDERIVJun 30D200,000$0.00—?
Fletcher PayneOtherDERIVJun 30D55,000$0.00—?
Fletcher PayneOtherJun 30D22$1.72$38FX
Fletcher PayneOtherJun 30D222$1.72$382FX
Denis R. BurgerOtherDERIVJun 30D10,000$0.00—?
Denis R. BurgerOtherDERIVJun 30D60,000$0.00—?
Denis R. BurgerOtherDERIVJun 30D5,000$0.00—?
Denis R. BurgerOtherDERIVJun 30D40,000$0.00—?
Denis R. BurgerOtherDERIVJun 30D160,334$0.00—?
Denis R. BurgerOtherDERIVJun 30D50,000$0.00—?
Denis R. BurgerOtherDERIVJun 30D50,000$0.00—?
Denis R. BurgerOtherDERIVJun 30D50,000$0.00—?
Denis R. BurgerOtherDERIVJun 30D100,000$0.00—?
Denis R. BurgerOtherDERIVJun 30D3,333$0.00—?
Denis R. BurgerOtherJun 30D70$1.72$120FX
Rafael BejarOtherDERIVJun 30D400,000$0.00—?
Rafael BejarOtherDERIVJun 30D200,000$0.00—?
Rafael BejarOtherDERIVJun 30D343,000$0.00—?
Rafael BejarOtherDERIVJun 30D400,000$0.00—?
Rafael BejarOtherDERIVJun 30D200,000$0.00—?
Rafael BejarOtherDERIVJun 30D35,000$0.00—?
Rafael BejarOtherJun 30D244$1.72$420FX