Aptose Biosciences Inc. - Common Shares (APTO)
CUSIP: 03835T309
Q4 2024 13F Holders as of 31 Dec 2024
- Type / Class
- Equity / Common Shares
- Shares outstanding
- 2,587,950
- Total 13F shares
- 3,965,886
- Share change
- +736,364
- Total reported value
- $892,850
- Price per share
- $0.23
- Number of holders
- 20
- Value change
- -$203,734
- Number of buys
- 3
- Number of sells
- 10
Quarterly Holders Quick Answers
What is CUSIP 03835T309?
CUSIP 03835T309 identifies APTO - Aptose Biosciences Inc. - Common Shares in SEC institutional holdings data.
Need full ownership history?
Open the full security ownership history page.
Next holder-history checks
These links keep the next click tied to holder verification, nearby quarters, or outside-13F ownership context.
- Back to full security ownership history for the broader multi-quarter picture.
- Latest 13F filings for newly reported positions across managers.
- Latest Schedule 13D/13G reports for ownership changes outside the 13F cadence.
- SEC investors directory for manager drilldown.
Explore More Reporting Periods
Jump to adjacent filing periods for faster comparison and easier crawl discovery.
Recent filing periods for CUSIP 03835T309:
Top shareholders of APTO - Aptose Biosciences Inc. - Common Shares (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| Donald R. Wilson Jr. |
3/4/5
|
10%+ Owner |
—
class O/S missing
|
8,892,437
|
$12,885,141 | — | 03 Aug 2021 | |
| ARMISTICE CAPITAL, LLC |
13F
13D/G
|
Company |
5%
from 13D/G
|
1,888,000
|
$775,779 | — | 30 Sep 2024 | |
| DRW Securities, LLC |
13F
|
Company |
23%
|
592,829
|
$243,593 | — | 30 Sep 2024 | |
| Sigma Planning Corp |
13F
|
Company |
16%
|
401,750
|
$165,079 | — | 30 Sep 2024 | |
| William G. Rice |
3/4/5
|
Chair, President & CEO, Director |
—
mixed-class rows
|
733,252
mixed-class rows
|
$122,650 | — | 25 Nov 2024 | |
| UBS Group AG |
13F
|
Company |
5.2%
|
133,476
|
$54,859 | — | 30 Sep 2024 | |
| Nantahala Capital Management, LLC |
13F
|
Company |
3%
|
77,340
|
$31,779 | — | 30 Sep 2024 | |
| Bernd R. Seizinger |
3/4/5
|
Director |
—
mixed-class rows
|
20,333
mixed-class rows
|
$24,633 | — | 05 Feb 2024 | |
| MORGAN STANLEY |
13F
|
Company |
1.2%
|
31,353
|
$12,883 | — | 30 Sep 2024 | |
| TWO SIGMA SECURITIES, LLC |
13F
|
Company |
1.2%
|
30,427
|
$12,502 | — | 30 Sep 2024 | |
| Annandale Capital, LLC |
13F
|
Company |
1%
|
26,666
|
$11,000 | — | 30 Sep 2024 | |
| Cetera Investment Advisers |
13F
|
Company |
0.74%
|
19,214
|
$7,895 | — | 30 Sep 2024 | |
| Texas Capital Bank Wealth Management Services Inc |
13F
|
Company |
0.48%
|
12,448
|
$5,115 | — | 30 Sep 2024 | |
| PDS Planning, Inc |
13F
|
Company |
0.39%
|
10,000
|
$4,109 | — | 30 Sep 2024 | |
| ROYAL BANK OF CANADA |
13F
|
Company |
0.05%
|
1,401
|
$1,000 | — | 30 Sep 2024 | |
| US BANCORP \DE\ |
13F
|
Company |
0.08%
|
2,020
|
$830 | — | 30 Sep 2024 | |
| Gleason Group, Inc. |
13F
|
Company |
0.05%
|
1,216
|
$500 | — | 30 Sep 2024 | |
| Newbridge Financial Services Group, Inc. |
13F
|
Company |
0.03%
|
832
|
$342 | — | 30 Sep 2024 | |
| TD Waterhouse Canada Inc. |
13F
|
Company |
0.03%
|
684
|
$263 | — | 30 Sep 2024 | |
| OSAIC HOLDINGS, INC. |
13F
|
Company |
0.02%
|
420
|
$173 | — | 30 Sep 2024 | |
| HighMark Wealth Management LLC |
13F
|
Company |
0.01%
|
300
|
$123 | — | 30 Sep 2024 | |
| NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO |
13F
|
Company |
0.01%
|
133
|
$55 | — | 30 Sep 2024 | |
| GROUP ONE TRADING LLC |
13F
|
Company |
0%
|
115
|
$47 | — | 30 Sep 2024 | |
| Federation Des Caisses Desjardins du Quebec |
13F
|
Individual |
0%
|
103
|
$40 | — | 30 Sep 2024 | |
| CALDWELL SUTTER CAPITAL, INC. |
13F
|
Company |
0%
|
92
|
$38 | — | 30 Sep 2024 | |
| WELLS FARGO & COMPANY/MN |
13F
|
Company |
0%
|
55
|
$23 | — | 30 Sep 2024 | |
| Pacific Capital Wealth Advisors, Inc. |
13F
|
Company |
0%
|
6
|
$2 | — | 30 Sep 2024 | |
| FIL Ltd |
13F
|
Company |
0%
|
1
|
$1 | — | 30 Sep 2024 | |
| Jotin Marango |
3/4/5
|
Senior VP, CFO, and CBO |
—
class O/S missing
|
600,000
|
— | — | 18 Jan 2022 | |
| Fletcher Payne |
3/4/5
|
Sr VP and CFO |
—
class O/S missing
|
55,000
|
— | — | 05 Feb 2024 | |
| Caroline M. Loewy |
3/4/5
|
Former Director |
—
class O/S missing
|
50,000
|
— | — | 31 May 2022 | |
| Rafael Bejar |
3/4/5
|
Sr VP & Chief Medical Officer |
—
class O/S missing
|
35,000
|
— | — | 05 Feb 2024 | |
| Philippe Ledru |
3/4/5
|
Former Officer |
—
class O/S missing
|
11,000
|
— | — | 23 Feb 2024 | |
| Carol Gail Ashe |
3/4/5
|
Director |
—
class O/S missing
|
3,333
|
— | — | 05 Feb 2024 | |
| Denis R. Burger |
3/4/5
|
Director |
—
class O/S missing
|
3,333
|
— | — | 05 Feb 2024 | |
| Erich Platzer |
3/4/5
|
Director |
—
class O/S missing
|
3,333
|
— | — | 05 Feb 2024 | |
| Mark D. Vincent |
3/4/5
|
Director |
—
class O/S missing
|
3,333
|
— | — | 05 Feb 2024 | |
| Warren Whitehead |
3/4/5
|
Director |
—
class O/S missing
|
3,333
|
— | — | 05 Feb 2024 |
Institutional Holders of Aptose Biosciences Inc. - Common Shares (APTO) as of Q4 2024
As of 31 Dec 2024,
Aptose Biosciences Inc. - Common Shares (APTO) was held by
20 institutional
shareholders
that filed Form 13F with the SEC.
Together, they reported ownership of
3,965,886 shares.
The largest 10 holders included
Bleichroeder LP, Sigma Planning Corp, DRW Securities, LLC, UBS Group AG, HRT FINANCIAL LP, Annandale Capital, LLC, Cetera Investment Advisers, TWO SIGMA SECURITIES, LLC, MORGAN STANLEY, and US BANCORP \DE\.
This page lists
20
institutional shareholders reporting positions in this security
for the Q4 2024 filing period.
| Investor | Option | Weight % | Change % | Value $ | * Price | Shares | Share Change | Activity | Report Period |
|---|
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 Diff $ | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.
An asterisk sign (*) next to the price indicates that the price is likely invalid.