Aptose Biosciences Inc. APTO (last ticker on record)
CIK 882361Its SEC filings (opens in a new tab)
- 95% wipeout
- Delisting notice (not a red flag)
These figures describe clients, not conduct. A lawyer or firm can serve many companies that later had trouble for reasons that have nothing to do with their work, and nothing here says any lawyer or firm did anything wrong.
- Red flags
- 1
- Newest began May 2023
- Largest fall in its shares
- 99%
- Feb 2004 to Jun 2025
- Law firms
- 7
- Linked to 5 or more companies
- Lawyers
- 6
- Linked to 5 or more companies
What happened
- Delisting notice (Item 3.01)Form 8-K (opens in a new tab)
- Delisting notice (Item 3.01)Form 8-K (opens in a new tab)
- Delisting notice (Item 3.01)Form 8-K (opens in a new tab)
- Delisting notice (Item 3.01)Form 8-K (opens in a new tab)
- Delisting notice (Item 3.01)Form 8-K (opens in a new tab)
- Delisting notice (Item 3.01)Form 8-K (opens in a new tab)
- Shares down 95% from their high
- Delisting notice (Item 3.01)Form 8-K (opens in a new tab)
- Shares down 95% from their high
An SEC release can name a company’s officer, or its stock as what a scheme sold or moved, so the company may be the victim. Each link goes to what to read.
Law firms
The ratios are about all the companies linked to each one, this one included: how many had that outcome, as a multiple of what comparable companies show. 1.00 means no more than expected.
- Mayer BrownFirst linked Dec 2025 · Named in SEC correspondence · 680 linked companiesSEC/DOJ scrutiny 0.98× · Went dark 0.34× · 95% wipeout 0.94×
- McCarthy TetraultFirst linked Jun 2010 · Named in a filing · 111 linked companiesSEC/DOJ scrutiny 0.76× · Went dark 0.57× · 95% wipeout 1.41×
- Dorsey & Whitney LLPFirst linked Jul 2006 · Named in SEC correspondence · 630 linked companiesSEC/DOJ scrutiny 0.83× · Went dark 0.73× · 95% wipeout 1.16×
- Willkie FarrFirst linked Feb 2026 · Text search only · 539 linked companiesSEC/DOJ scrutiny 1.23× · Went dark 0.40× · 95% wipeout 0.84×
- Pryor CashmanFirst linked Feb 2025 · Text search only · 229 linked companiesSEC/DOJ scrutiny 1.28× · Went dark 1.25× · 95% wipeout 1.28×
- Cooley LLPFirst linked Dec 2023 · Text search only · 1,634 linked companiesSEC/DOJ scrutiny 0.71× · Went dark 0.44× · 95% wipeout 1.24×
- Pillsbury WinthropFirst linked Jun 2010 · Text search only · 516 linked companiesSEC/DOJ scrutiny 1.13× · Went dark 0.82× · 95% wipeout 1.27×
| Name | First linked | How it is known | Linked companies | SEC/DOJ scrutiny | Went dark | 95% wipeout |
|---|---|---|---|---|---|---|
| Mayer Brown | Dec 2025 | Named in SEC correspondence | 680 | 0.98 | 0.34 | 0.94 |
| McCarthy Tetrault | Jun 2010 | Named in a filing | 111 | 0.76 | 0.57 | 1.41 |
| Dorsey & Whitney LLP | Jul 2006 | Named in SEC correspondence | 630 | 0.83 | 0.73 | 1.16 |
| Willkie Farr | Feb 2026 | Text search only | 539 | 1.23 | 0.40 | 0.84 |
| Pryor Cashman | Feb 2025 | Text search only | 229 | 1.28 | 1.25 | 1.28 |
| Cooley LLP | Dec 2023 | Text search only | 1,634 | 0.71 | 0.44 | 1.24 |
| Pillsbury Winthrop | Jun 2010 | Text search only | 516 | 1.13 | 0.82 | 1.27 |
Lawyers
The ratios are about all the companies linked to each one, this one included: how many had that outcome, as a multiple of what comparable companies show. 1.00 means no more than expected.
- David S. BakstMayer BrownFirst linked Dec 2025 · Named in SEC correspondence · 16 linked companiesSEC/DOJ scrutiny 0.00× · Went dark 0.00× · 95% wipeout 1.30×
- Daniel MillerCassels Brock & BlackwellFirst linked Oct 2022 · Named in SEC correspondence · 7 linked companiesSEC/DOJ scrutiny 0.00× · Went dark 0.00× · 95% wipeout 1.18×
- Daniel D. NauthSichenzia Ross Ference LLPFirst linked Feb 2013 · Named in SEC correspondence · 17 linked companiesSEC/DOJ scrutiny 1.23× · Went dark 0.00× · 95% wipeout 1.31×
- Daniel M. MillerDorsey & Whitney LLPFirst linked Mar 2010 · Named in SEC correspondence · 32 linked companiesSEC/DOJ scrutiny 0.32× · Went dark 0.00× · 95% wipeout 1.42×
- Anthony EppsDorsey & Whitney LLPFirst linked Feb 2025 · Text search only · 18 linked companiesSEC/DOJ scrutiny 0.00× · Went dark 0.00× · 95% wipeout 0.89×
- M. Ali PanjwaniPryor CashmanFirst linked Feb 2025 · Text search only · 80 linked companiesSEC/DOJ scrutiny 2.02× · Went dark 2.24× · 95% wipeout 1.25×
| Name | First linked | How it is known | Linked companies | SEC/DOJ scrutiny | Went dark | 95% wipeout |
|---|---|---|---|---|---|---|
| David S. BakstMayer Brown | Dec 2025 | Named in SEC correspondence | 16 | 0.00 | 0.00 | 1.30 |
| Daniel MillerCassels Brock & Blackwell | Oct 2022 | Named in SEC correspondence | 7 | 0.00 | 0.00 | 1.18 |
| Daniel D. NauthSichenzia Ross Ference LLP | Feb 2013 | Named in SEC correspondence | 17 | 1.23 | 0.00 | 1.31 |
| Daniel M. MillerDorsey & Whitney LLP | Mar 2010 | Named in SEC correspondence | 32 | 0.32 | 0.00 | 1.42 |
| Anthony EppsDorsey & Whitney LLP | Feb 2025 | Text search only | 18 | 0.00 | 0.00 | 0.89 |
| M. Ali PanjwaniPryor Cashman | Feb 2025 | Text search only | 80 | 2.02 | 2.24 | 1.25 |