Aptose Biosciences Inc.
Reported to SECin USCIK 0000882361Filings at SEC EDGAR
No score on this page, by design. Everything here is a fact from a public U.S. register: insider filings at the SEC (Form 4), lobbying filings under the Lobbying Disclosure Act, trades reported by members of Congress under the STOCK Act, and fund holdings in 13F filings. Our scores, percentiles and signals run on the Dutch register only, because that is the only register the model has been validated on.
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The most recent filings
Most recent filing first: every line of every Form 4 at this company that passed our review, the same lines as on the register. Reported is the day the filing reached the SEC, usually within two business days of the trade. Amounts are in U.S. dollars, as the form states them.
| Filed by | Type | Value | Reported | Filed by | Value | Type | Shares | Reported |
|---|---|---|---|---|---|---|---|---|
| Seizinger Bernd R.— | Returned to the issuer | nothing paid50,000 shares | Jul 2, 2026 | Seizinger Bernd R. | nothing paid | Returned to the issuer | 50,000 | Jul 2, 2026 |
| Seizinger Bernd R.— | Returned to the issuer | nothing paid100,000 shares | Jul 2, 2026 | Seizinger Bernd R. | nothing paid | Returned to the issuer | 100,000 | Jul 2, 2026 |
| Seizinger Bernd R.— | Returned to the issuer | nothing paid3,333 shares | Jul 2, 2026 | Seizinger Bernd R. | nothing paid | Returned to the issuer | 3,333 | Jul 2, 2026 |
| Seizinger Bernd R.— | Returned to the issuer | $29,24017,000 shares | Jul 2, 2026 | Seizinger Bernd R. | $29,240 | Returned to the issuer | 17,000 | Jul 2, 2026 |
| Whitehead Warren— | Returned to the issuer | nothing paid53,000 shares | Jul 1, 2026 | Whitehead Warren | nothing paid | Returned to the issuer | 53,000 | Jul 1, 2026 |