Alx Oncology Holdings Inc SEC filings ALXO
Alx Oncology Holdings Inc has 421 filings in SEC EDGAR's recent list, going back to May 5, 2020. Its latest annual report, Form ARS, was filed on Apr 20, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 6, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Oct 15, 2026 (material agreement, unregistered share sale). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 8-K |
Current report
Material agreement, Unregistered share sale
|
Oct 15, 2026 | Oct 14, 2026 |
| 10-Q | Quarterly report | Aug 6, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations
|
Aug 6, 2026 | Aug 6, 2026 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure, Other events
|
Jun 30, 2026 | Jun 29, 2026 |
| 8-K |
Current report
Material agreement, Agreement ended, New debt
|
Jun 26, 2026 | Jun 25, 2026 |
| 8-K |
Current report
Shareholder vote results
|
Jun 11, 2026 | Jun 10, 2026 |
| 10-Q | Quarterly report | May 8, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
May 8, 2026 | May 8, 2026 |
| ARS | Annual report to shareholders | Apr 20, 2026 | Dec 31, 2025 |
| DEF 14A | Proxy statement | Apr 20, 2026 | Apr 17, 2026 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Apr 13, 2026 | Apr 13, 2026 |
| 10-K | Annual report | Mar 9, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations
|
Feb 27, 2026 | Feb 27, 2026 |
| 424B5 | Prospectus supplement | Jan 30, 2026 | — |
| 8-K |
Current report
Material agreement, Other events
|
Jan 30, 2026 | Jan 30, 2026 |
| 8-K |
Current report
Other events
|
Jan 30, 2026 | Jan 30, 2026 |
| S-8 | Employee stock plan registration | Jan 21, 2026 | — |
| 8-K |
Current report
Officer or director change
|
Jan 21, 2026 | Jan 21, 2026 |
| 10-Q | Quarterly report | Nov 7, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 7, 2025 | Nov 7, 2025 |
| 8-K |
Current report
Officer or director change, Other events
|
Sep 12, 2025 | Sep 11, 2025 |
| 10-Q | Quarterly report | Aug 12, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations, Officer or director change, Other events
|
Aug 12, 2025 | Aug 12, 2025 |
| 8-K |
Current report
Shareholder vote results
|
Jun 12, 2025 | Jun 11, 2025 |
| 10-Q | Quarterly report | May 8, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
May 8, 2025 | May 8, 2025 |
| 8-K |
Current report
Listing notice
|
Apr 25, 2025 | Apr 23, 2025 |
| EFFECT | Filing | Apr 24, 2025 | — |
| CORRESP | Letter to the SEC | Apr 23, 2025 | — |
| ARS | Annual report to shareholders | Apr 21, 2025 | Dec 31, 2024 |
| DEF 14A | Proxy statement | Apr 21, 2025 | Apr 21, 2025 |
| UPLOAD | Letter from the SEC | Mar 11, 2025 | — |
| S-3 | Shelf registration | Mar 6, 2025 | — |
| 10-K | Annual report | Mar 6, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Results of operations
|
Mar 6, 2025 | Mar 6, 2025 |
| 8-K |
Current report
Exit or restructuring costs, Officer or director change
|
Mar 5, 2025 | Feb 28, 2025 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure, Other events
|
Jan 22, 2025 | Jan 16, 2025 |
| 8-K |
Current report
Officer or director change
|
Jan 17, 2025 | Jan 16, 2025 |
| S-8 | Employee stock plan registration | Jan 17, 2025 | — |
| SC TO-I/A | Filing | Dec 31, 2024 | — |
| SC TO-I | Filing | Dec 2, 2024 | — |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure, Other events
|
Nov 14, 2024 | Nov 8, 2024 |
| 10-Q | Quarterly report | Nov 7, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations, Officer or director change
|
Nov 7, 2024 | Nov 5, 2024 |
| 8-K |
Current report
Officer or director change
|
Oct 4, 2024 | Sep 30, 2024 |
| 10-Q | Quarterly report | Aug 12, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations
|
Aug 8, 2024 | Aug 8, 2024 |
| 8-K |
Current report
Officer or director change, Other events
|
Aug 6, 2024 | Aug 5, 2024 |
| 8-K |
Current report
Shareholder vote results
|
Jun 17, 2024 | Jun 12, 2024 |
| 10-Q | Quarterly report | May 9, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations
|
May 9, 2024 | May 9, 2024 |
| DEFA14A | Additional proxy material | May 2, 2024 | — |
| 8-K |
Current report
Officer or director change
|
May 2, 2024 | Apr 28, 2024 |
| ARS | Annual report to shareholders | Apr 23, 2024 | Dec 31, 2023 |
| DEF 14A | Proxy statement | Apr 22, 2024 | Jun 12, 2024 |
| S-8 | Employee stock plan registration | Mar 8, 2024 | — |
| 10-K | Annual report | Mar 7, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Results of operations
|
Mar 7, 2024 | Mar 7, 2024 |
| 8-K |
Current report
Material agreement, New debt
|
Dec 26, 2023 | Dec 22, 2023 |
| 10-Q | Quarterly report | Nov 13, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Results of operations
|
Nov 13, 2023 | Nov 13, 2023 |
| 8-K |
Current report
Material agreement, Other events
|
Oct 6, 2023 | Oct 4, 2023 |
| 424B5 | Prospectus supplement | Oct 6, 2023 | — |
| 8-K |
Current report
Results of operations
|
Oct 4, 2023 | Oct 4, 2023 |
| 424B5 | Prospectus supplement | Oct 4, 2023 | — |
| 8-K |
Current report
Other events
|
Oct 4, 2023 | Oct 3, 2023 |
| EFFECT | Filing | Sep 8, 2023 | — |
| 424B3 | Prospectus | Sep 8, 2023 | — |
| CORRESP | Letter to the SEC | Sep 7, 2023 | — |
| UPLOAD | Letter from the SEC | Sep 6, 2023 | — |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure, Other events
|
Sep 6, 2023 | Sep 1, 2023 |
| S-3 | Shelf registration | Sep 1, 2023 | — |
| 424B5 | Prospectus supplement | Aug 25, 2023 | — |
| 10-Q | Quarterly report | Aug 10, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Results of operations
|
Aug 10, 2023 | Aug 10, 2023 |
| 8-K |
Current report
Bylaw or fiscal year change, Shareholder vote results
|
Jun 20, 2023 | Jun 16, 2023 |
| 10-Q | Quarterly report | May 11, 2023 | Mar 31, 2023 |
| 8-K |
Current report
Results of operations
|
May 11, 2023 | May 11, 2023 |
| ARS | Annual report to shareholders | Apr 24, 2023 | Dec 31, 2022 |
| DEF 14A | Proxy statement | Apr 24, 2023 | Jun 16, 2023 |
| 8-K |
Current report
Regulation FD disclosure
|
Mar 13, 2023 | Mar 10, 2023 |
| S-8 | Employee stock plan registration | Mar 9, 2023 | — |
| 10-K | Annual report | Mar 9, 2023 | Dec 31, 2022 |
| 8-K |
Current report
Results of operations
|
Mar 9, 2023 | Mar 9, 2023 |
| 8-K |
Current report
Officer or director change
|
Nov 29, 2022 | Nov 28, 2022 |
| 10-Q | Quarterly report | Nov 8, 2022 | Sep 30, 2022 |
| 8-K |
Current report
Results of operations
|
Nov 8, 2022 | Nov 8, 2022 |
| 8-K |
Current report
Material agreement, New debt
|
Oct 31, 2022 | Oct 27, 2022 |
| 10-Q | Quarterly report | Aug 8, 2022 | Jun 30, 2022 |
| 8-K |
Current report
Results of operations
|
Aug 8, 2022 | Aug 8, 2022 |
| 8-K |
Current report
Shareholder vote results
|
Jun 16, 2022 | Jun 14, 2022 |
| EFFECT | Filing | May 31, 2022 | — |
| POS AM | Filing | May 27, 2022 | — |
| EFFECT | Filing | May 25, 2022 | — |
| CORRESP | Letter to the SEC | May 24, 2022 | — |
| S-3/A | Filing | May 13, 2022 | — |
| 10-Q | Quarterly report | May 9, 2022 | Mar 31, 2022 |
| 8-K |
Current report
Results of operations
|
May 9, 2022 | May 9, 2022 |
| DEF 14A | Proxy statement | Apr 22, 2022 | Jun 14, 2022 |
| 8-K |
Current report
Officer or director change
|
Apr 12, 2022 | Apr 11, 2022 |
| UPLOAD | Letter from the SEC | Mar 29, 2022 | — |
| S-3 | Shelf registration | Mar 25, 2022 | — |
| S-8 | Employee stock plan registration | Feb 28, 2022 | — |
| 10-K | Annual report | Feb 28, 2022 | Dec 31, 2021 |
| 8-K |
Current report
Results of operations
|
Feb 28, 2022 | Feb 28, 2022 |
| 8-K |
Current report
Material agreement
|
Dec 17, 2021 | Dec 17, 2021 |
| 424B5 | Prospectus supplement | Dec 17, 2021 | — |
| 10-Q | Quarterly report | Nov 12, 2021 | Sep 30, 2021 |
| 8-K |
Current report
Results of operations
|
Nov 12, 2021 | Nov 11, 2021 |
| 8-K |
Current report
Unregistered share sale, Other events
|
Oct 7, 2021 | Oct 4, 2021 |
| 8-K |
Current report
Officer or director change
|
Aug 27, 2021 | Aug 26, 2021 |
| S-3ASR | Automatic shelf registration | Aug 13, 2021 | — |
| 10-Q | Quarterly report | Aug 12, 2021 | Jun 30, 2021 |
| 8-K |
Current report
Results of operations
|
Aug 12, 2021 | Aug 12, 2021 |
| 8-K |
Current report
Shareholder vote results
|
Jun 15, 2021 | Jun 10, 2021 |
| 10-Q | Quarterly report | May 17, 2021 | Mar 31, 2021 |
| 8-K |
Current report
Results of operations
|
May 17, 2021 | May 17, 2021 |
| 8-K |
Current report
Officer or director change
|
May 4, 2021 | May 3, 2021 |
| DEF 14A | Proxy statement | Apr 29, 2021 | Jun 10, 2021 |
| 8-K |
Current report
Officer or director change
|
Mar 25, 2021 | Mar 22, 2021 |
| S-8 | Employee stock plan registration | Mar 18, 2021 | — |
| 10-K | Annual report | Mar 18, 2021 | Dec 31, 2020 |
| 8-K |
Current report
Results of operations
|
Mar 18, 2021 | Mar 18, 2021 |
| 8-K |
Current report
Officer or director change
|
Mar 15, 2021 | Mar 11, 2021 |
| 8-K |
Current report
Officer or director change
|
Dec 23, 2020 | Dec 22, 2020 |
| 424B4 | Prospectus | Dec 11, 2020 | — |
| EFFECT | Filing | Dec 9, 2020 | — |
| S-1MEF | Filing | Dec 9, 2020 | — |
| CORRESP | Letter to the SEC | Dec 7, 2020 | — |
| CORRESP | Letter to the SEC | Dec 7, 2020 | — |
| S-1 | Registration statement | Dec 7, 2020 | — |
| UPLOAD | Letter from the SEC | Nov 25, 2020 | — |
| DRS | Filing | Nov 24, 2020 | — |
| 10-Q | Quarterly report | Nov 12, 2020 | Sep 30, 2020 |
| 8-K |
Current report
Results of operations
|
Nov 12, 2020 | Nov 12, 2020 |
| 10-Q | Quarterly report | Aug 27, 2020 | Jun 30, 2020 |
| 8-K |
Current report
Results of operations
|
Aug 27, 2020 | Aug 27, 2020 |
| 8-K |
Current report
Bylaw or fiscal year change, Regulation FD disclosure
|
Jul 21, 2020 | Jul 21, 2020 |
| S-8 | Employee stock plan registration | Jul 17, 2020 | — |
| 424B4 | Prospectus | Jul 17, 2020 | — |
| EFFECT | Filing | Jul 16, 2020 | — |
| S-1MEF | Filing | Jul 16, 2020 | — |
| CERT | Filing | Jul 16, 2020 | — |
| CORRESP | Letter to the SEC | Jul 14, 2020 | — |
| CORRESP | Letter to the SEC | Jul 14, 2020 | — |
| 8-A12B | Filing | Jul 13, 2020 | — |
| S-1/A | Amended registration statement | Jul 13, 2020 | — |
| CORRESP | Letter to the SEC | Jul 2, 2020 | — |
| CORRESP | Letter to the SEC | Jun 26, 2020 | — |
| S-1 | Registration statement | Jun 26, 2020 | — |
| UPLOAD | Letter from the SEC | Jun 24, 2020 | — |
| DRSLTR | Filing | Jun 12, 2020 | — |
| DRS/A | Filing | Jun 12, 2020 | — |
| UPLOAD | Letter from the SEC | Jun 2, 2020 | — |
| DRSLTR | Filing | May 5, 2020 | — |
| DRS | Filing | May 5, 2020 | — |
Showing 156 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Pharmaceutical Preparations (SIC 2834)
- Listed as
- ALXO (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- South San Francisco, CA
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 1810182
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.