Security key
03835T309
Aptose Biosciences Inc. - Common Shares (APTO)
CUSIP: 03835T309
Q4 2024 13F Holders as of 31 Dec 2024
- Security type / class
- Equity / Common Shares
- Total 13F shares
- 3,965,886
- Total 13F value
- $892,850
- Share change
- +736,364
- SEC-reported price per share
- $0.23
- Number of holders
- 20
- Value change
- -$203,734
- Number of buys
- 3
- Number of sells
- 10
- Shares outstanding
- 2,587,950
Holder snapshot
6 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q4 2024
Institutions
20
Top holders
10
APTO full security history
Ownership snapshot
Full 13F holder table
Aptose Biosciences Inc. SEC filings
Aptose Biosciences Inc. company facts
Broader feeds
Ownership snapshot
Top reported holders of APTO - Aptose Biosciences Inc. - Common Shares (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
ARMISTICE CAPITAL, LLC
Disclosed value leader
ARMISTICE CAPITAL, LLC
Comparable rows
15/15
Latest evidence
30 Sep 2024
13F
13D/G
Lead comparable stake: 5%
13D/G row: ARMISTICE CAPITAL, LLC
Showing 1-6 of 15 holder rows.
Quick read
ARMISTICE CAPITAL, LLC leads the comparable SEC ownership view at 5%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens ARMISTICE CAPITAL, LLC's linked filing trail.
Comparable ownership
Top 5
ARMISTICE CAPITAL, LLC
5%
DRW Securities, LLC
23%
Sigma Planning Corp
16%
UBS Group AG
5.2%
Nantahala Capital Management, LLC
3%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| ARMISTICE CAPITAL, LLC |
13F
13D/G
Company
|
5%
from 13D/G
|
$775,779
1,888,000 shares
|
— | 30 Sep 2024 |
| DRW Securities, LLC |
13F
Company
|
23%
|
$243,593
592,829 shares
|
— | 30 Sep 2024 |
| Sigma Planning Corp |
13F
Company
|
16%
|
$165,079
401,750 shares
|
— | 30 Sep 2024 |
| UBS Group AG |
13F
Company
|
5.2%
|
$54,859
133,476 shares
|
— | 30 Sep 2024 |
| Nantahala Capital Management, LLC |
13F
Company
|
3%
|
$31,779
77,340 shares
|
— | 30 Sep 2024 |
| MORGAN STANLEY |
13F
Company
|
1.2%
|
$12,883
31,353 shares
|
— | 30 Sep 2024 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q4 2024
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
20
Shares
3,965,886
Rows available
20
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q4 2024 vs Q3 2024 Across Filers
Q3 2024 holders
22
Q4 2024 holders
20
Holder diff
-2
| Investor | Q3 2024 Shares | Q4 2024 Shares | Share Diff | Share Chg % | Q3 2024 value | Q4 2024 value | Value change | Value Chg % |
|---|