Quick Takeaways
- Bleichroeder LP filed SCHEDULE 13G/A for Aptose Biosciences Inc. Common Shares (APTO).
- Disclosed ownership: 1.6%.
- Date of event: 30 Jun 2025.
Bleichroeder LP - 30 Jun 2025 SCHEDULE 13G/A Report for Aptose Biosciences Inc. Common Shares (APTO)
- Filing Manager
- Bleichroeder LP
- Reporting Manager
- Bleichroeder LP
- Symbol
- APTO
- Shares outstanding
- 2,587,950 shares
- Disclosed Ownership
- 41,666 shares
- Ownership
- 1.6%
- Form type
- SCHEDULE 13G/A
- Filing time
- 14 Aug 2025, 11:18:41 UTC
- Date of event
- 30 Jun 2025
- Previous filing
- 13 May 2025
- SEC
- View on sec.gov
Quoteable Key Fact
"Bleichroeder LP disclosed 1.6% ownership in Aptose Biosciences Inc. Common Shares (APTO) on 30 Jun 2025."
What Changed
- Previous schedule filing date: 13 May 2025.
- Current filing was accepted on 14 Aug 2025, 11:18.
Why This Matters
- This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
- You can verify ownership claims directly against the original SEC filing.
Official SEC Source
Backed by Schedule 13D/13G
Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.
See Original FilingReporting Managers (3)
| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Bleichroeder LP | 1.6% | 41,666 | 41,666 | 0 | Andrew Gundlach | Andrew Gundlach, President and CEO | |
| Bleichroeder Holdings LLC | 1.6% | 41,666 | 41,666 | 0 | Andrew Gundlach | Andrew Gundlach, President and CEO | |
| Andrew Gundlach | 1.6% | 41,666 | 41,666 | 0 | Andrew Gundlach | Andrew Gundlach, Individual |