# ALX Oncology Holdings Inc: filings

ALXO · Nasdaq · CIK 1810182 · [Healthcare](/sectors/healthcare.md) · fiscal year ends Dec 31

Pages: [Overview](/companies/alxo.md) · [Financials](/companies/alxo/financials.md) · [Filings](/companies/alxo/filings.md) · [Insiders](/companies/alxo/insiders.md)

## Reports and events: 107 filings

Newest first, by EDGAR acceptance time (Eastern). Filter with ?form= one of: `periodic`, `8-K`, `10-K`, `10-Q`, `4`, `proxy`, `13dg`, `all`, or any form this company filed (4 187, 8-K 64, 3 23, 10-Q 19, SC 13G/A 12, SCHEDULE 13G/A 12, CORRESP 9, SC 13G 8, S-8 7, 10-K 6, 144 6, DEF 14A 6, EFFECT 6, UPLOAD 6, 424B5 5, ARS 4, SCHEDULE 13G 4, S-3 3, SC 13D 3, SC 13D/A 3, SCHEDULE 13D/A 3, 424B4 2, 4/A 2, DRS 2, DRSLTR 2, S-1 2, S-1MEF 2, 3/A 1, 424B3 1, 8-A12B 1, CERT 1, DEFA14A 1, DRS/A 1, POS AM 1, S-1/A 1, S-3/A 1, S-3ASR 1, SC TO-I 1, SC TO-I/A 1).

| Filed | Accepted | Form | What it is | Accession |
| --- | --- | --- | --- | --- |
| 2026-10-16 | 01:21 ET | [SCHEDULE 13D/A](/filings/0000905148-26-004485.md) | Ownership report, active investor, amended | 0000905148-26-004485 |
| 2026-10-15 | 20:55 ET | [8-K](/filings/0001193125-26-422992.md) | 1.01 Entry into a material agreement; 3.02 Unregistered sale of equity; 9.01 Financial statements and exhibits | 0001193125-26-422992 |
| 2026-08-06 | 20:01 ET | [10-Q](/filings/0001193125-26-337920.md) | Quarterly report, period 2026-06-30 | 0001193125-26-337920 |
| 2026-08-06 | 12:05 ET | [8-K](/filings/0001193125-26-336843.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001193125-26-336843 |
| 2026-06-30 | 20:01 ET | [8-K](/filings/0001193125-26-290447.md) | 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure; 8.01 Other events; 9.01 Financial statements and exhibits | 0001193125-26-290447 |
| 2026-06-26 | 20:02 ET | [8-K](/filings/0001193125-26-285425.md) | 1.01 Entry into a material agreement; 1.02 Termination of a material agreement; 2.03 New direct financial obligation; 9.01 Financial statements and exhibits | 0001193125-26-285425 |
| 2026-06-11 | 20:02 ET | [8-K](/filings/0001193125-26-267472.md) | 5.07 Shareholder vote results | 0001193125-26-267472 |
| 2026-05-27 | 20:17 ET | [SCHEDULE 13D/A](/filings/0001643828-26-000002.md) | Ownership report, active investor, amended | 0001643828-26-000002 |
| 2026-05-08 | 12:11 ET | [10-Q](/filings/0001193125-26-213399.md) | Quarterly report, period 2026-03-31 | 0001193125-26-213399 |
| 2026-05-08 | 12:06 ET | [8-K](/filings/0001193125-26-213380.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001193125-26-213380 |
| 2026-04-20 | 20:05 ET | [DEF 14A](/filings/0001193125-26-163936.md) | Proxy statement, period 2026-04-17 | 0001193125-26-163936 |
| 2026-04-13 | 12:35 ET | [8-K](/filings/0001193125-26-152050.md) | 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001193125-26-152050 |
| 2026-03-09 | 20:03 ET | [10-K](/filings/0001193125-26-098454.md) | Annual report, period 2025-12-31 | 0001193125-26-098454 |
| 2026-02-27 | 13:05 ET | [8-K](/filings/0001193125-26-079342.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001193125-26-079342 |
| 2026-02-04 | 02:03 ET | [SCHEDULE 13D/A](/filings/0000905148-26-000512.md) | Ownership report, active investor, amended | 0000905148-26-000512 |
| 2026-01-30 | 13:36 ET | [8-K](/filings/0001193125-26-030579.md) | 1.01 Entry into a material agreement; 8.01 Other events; 9.01 Financial statements and exhibits | 0001193125-26-030579 |
| 2026-01-30 | 13:22 ET | [8-K](/filings/0001193125-26-030561.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001193125-26-030561 |
| 2026-01-21 | 21:43 ET | [8-K](/filings/0001193125-26-018094.md) | 5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits | 0001193125-26-018094 |
| 2025-11-07 | 21:01 ET | [10-Q](/filings/0001193125-25-272281.md) | Quarterly report, period 2025-09-30 | 0001193125-25-272281 |
| 2025-11-07 | 13:17 ET | [8-K](/filings/0001193125-25-271112.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001193125-25-271112 |
| 2025-09-12 | 12:32 ET | [8-K](/filings/0001810182-25-000006.md) | 5.02 Departure or appointment of officers or directors; 8.01 Other events; 9.01 Financial statements and exhibits | 0001810182-25-000006 |
| 2025-08-12 | 20:07 ET | [10-Q](/filings/0000950170-25-107303.md) | Quarterly report, period 2025-06-30 | 0000950170-25-107303 |
| 2025-08-12 | 20:02 ET | [8-K](/filings/0000950170-25-107277.md) | 2.02 Results of operations; 5.02 Departure or appointment of officers or directors; 8.01 Other events; 9.01 Financial statements and exhibits | 0000950170-25-107277 |
| 2025-06-12 | 20:18 ET | [8-K](/filings/0000950170-25-085364.md) | 5.07 Shareholder vote results | 0000950170-25-085364 |
| 2025-05-08 | 20:01 ET | [10-Q](/filings/0000950170-25-066894.md) | Quarterly report, period 2025-03-31 | 0000950170-25-066894 |
| 2025-05-08 | 12:35 ET | [8-K](/filings/0000950170-25-066440.md) | 2.02 Results of operations | 0000950170-25-066440 |
| 2025-04-25 | 20:01 ET | [8-K](/filings/0000950170-25-058687.md) | 3.01 Delisting notice | 0000950170-25-058687 |
| 2025-04-21 | 20:10 ET | [DEF 14A](/filings/0000950170-25-056291.md) | Proxy statement, period 2025-04-21 | 0000950170-25-056291 |
| 2025-03-06 | 21:33 ET | [10-K](/filings/0000950170-25-034761.md) | Annual report, period 2024-12-31 | 0000950170-25-034761 |
| 2025-03-06 | 21:01 ET | [8-K](/filings/0000950170-25-034574.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000950170-25-034574 |
| 2025-03-05 | 21:01 ET | [8-K](/filings/0000950170-25-033504.md) | 2.05 Exit or disposal costs; 5.02 Departure or appointment of officers or directors | 0000950170-25-033504 |
| 2025-01-22 | 13:01 ET | [8-K](/filings/0000950170-25-007532.md) | 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure; 8.01 Other events; 9.01 Financial statements and exhibits | 0000950170-25-007532 |
| 2025-01-17 | 21:41 ET | [8-K](/filings/0001193125-25-008461.md) | 5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits | 0001193125-25-008461 |
| 2024-11-14 | 13:03 ET | [8-K](/filings/0000950170-24-126749.md) | 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure; 8.01 Other events; 9.01 Financial statements and exhibits | 0000950170-24-126749 |
| 2024-11-07 | 21:06 ET | [10-Q](/filings/0000950170-24-123290.md) | Quarterly report, period 2024-09-30 | 0000950170-24-123290 |
| 2024-11-07 | 21:03 ET | [8-K](/filings/0000950170-24-123252.md) | 2.02 Results of operations; 5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits | 0000950170-24-123252 |
| 2024-10-04 | 13:00 ET | [8-K](/filings/0000950170-24-112734.md) | 5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits | 0000950170-24-112734 |
| 2024-08-12 | 20:03 ET | [10-Q](/filings/0000950170-24-095391.md) | Quarterly report, period 2024-06-30 | 0000950170-24-095391 |
| 2024-08-08 | 20:08 ET | [8-K](/filings/0000950170-24-093930.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000950170-24-093930 |
| 2024-08-06 | 20:45 ET | [8-K](/filings/0000950170-24-091938.md) | 5.02 Departure or appointment of officers or directors; 8.01 Other events; 9.01 Financial statements and exhibits | 0000950170-24-091938 |
| 2024-06-17 | 20:21 ET | [8-K](/filings/0000950170-24-074258.md) | 5.07 Shareholder vote results | 0000950170-24-074258 |
| 2024-05-09 | 20:10 ET | [10-Q](/filings/0000950170-24-056953.md) | Quarterly report, period 2024-03-31 | 0000950170-24-056953 |
| 2024-05-09 | 20:05 ET | [8-K](/filings/0000950170-24-056886.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000950170-24-056886 |
| 2024-05-02 | 20:07 ET | [8-K](/filings/0000950170-24-052093.md) | 5.02 Departure or appointment of officers or directors | 0000950170-24-052093 |
| 2024-04-22 | 20:01 ET | [DEF 14A](/filings/0000950170-24-046410.md) | Proxy statement, period 2024-06-12 | 0000950170-24-046410 |
| 2024-03-07 | 21:11 ET | [10-K](/filings/0000950170-24-027955.md) | Annual report, period 2023-12-31 | 0000950170-24-027955 |
| 2024-03-07 | 21:05 ET | [8-K](/filings/0000950170-24-027925.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000950170-24-027925 |
| 2024-02-14 | 00:28 ET | [SC 13D/A](/filings/0001104659-24-024164.md) | Ownership report, active investor, amended | 0001104659-24-024164 |
| 2023-12-26 | 21:01 ET | [8-K](/filings/0000950170-23-073016.md) | 1.01 Entry into a material agreement; 2.03 New direct financial obligation; 9.01 Financial statements and exhibits | 0000950170-23-073016 |
| 2023-12-20 | 22:38 ET | [SC 13D/A](/filings/0001104659-23-127396.md) | Ownership report, active investor, amended | 0001104659-23-127396 |

Page 1 of 3. [Older](/companies/alxo/filings.md?page=2)
Source: SEC EDGAR, the company’s filing index. Last ingested by Listed: Oct 24, 2026, 15:07 ET. No prices; not investment advice.