BURGER DENIS R 4

What Happened
Denis R. Burger, a former director of Aptose Biosciences (APTO), disposed of a total of 528,737 securities on June 30, 2026. The transactions were dispositions to the issuer pursuant to a board-, shareholder- and court‑approved business arrangement under which Hammi Pharmaceuticals acquired all outstanding shares at C$2.41 per share. Using the filing’s conversion (C$1.40 = US$1.00), the aggregate consideration is approximately US$909,428. The Form 4 shows one cash amount (70 shares at US$1.72, $120) and multiple $0 entries because many items were derivative instruments (options/awards) being surrendered/converted in the deal.

Key Details

• Transaction date: 2026-06-30; Form 4 filed 2026-07-01.
• Disposed: 528,737 total securities (includes stock and multiple derivative/option line items).
• Reported price: C$2.41 per share (converted in filing to US$1.72 per share); total ≈ US$909,428.
• Shares owned after transaction: Not specified in the filing.
• Footnotes: F1 = dispositions were pursuant to the business arrangement with Hammi Pharmaceuticals; F2 = currency conversion C$1.40 = US$1.00; F3 = option vesting schedule noted.
• Filing timeliness: No late-filing indication in the document.

Context
Most of the reported line items are derivative dispositions (options or option-like awards) recorded at $0 in the Form 4 because they were surrendered, converted, or cancelled as part of the acquisition transaction. Dispositions tied to an M&A closing are routine outcomes of deal consideration and corporate reorganization; they reflect the transaction, not necessarily the insider’s ongoing market view.