🕵️ ALX Oncology Holdings Inc ($ALXO)
SEC insider & ownership activity, last 12 months · CIK 1810182 · every row links its SEC filing
Over the last 12 months insiders sold $43K against $5.1M of open-market buying. Corey S. Goodman bought $5.0M in discretionary trades (Feb). HBM Healthcare Investments (CAYMAN) Ltd. trimmed 8.4% → 6.5%. No red-flag 8-Ks in the window.
Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
2 buyers, $5.1M (3 lots) · 2 sellers, $43K (7 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Corey S. Goodman | 1 | $5.0M | 0 | – | Feb 2, 2026 |
| Lettmann Jason | 2 | $99K | 2 | $31K | Aug 17, 2026 |
| Pinto Shelly | 0 | – | 5 | $12K | Aug 17, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Corey S. Goodman | 10.0% | 13D | Feb 2, 2026 | filing ↗ | |
| RA Capital Management, L.P. | 9.9% | 13G | Feb 9, 2026 | filing ↗ | |
| Peter Kolchinsky | 9.9% | 13G | Feb 9, 2026 | filing ↗ | |
| Rajeev Shah | 9.9% | 13G | Feb 9, 2026 | filing ↗ | |
| RA Capital Healthcare Fund, L.P. | 9.9% | 13G | Feb 9, 2026 | filing ↗ | |
| Robert J. Adelman | 9.9% | 13D | Feb 2, 2026 | filing ↗ | |
| Redmile Group, LLC | 6.8% | 13G | May 15, 2026 | filing ↗ | |
| Jeremy C. Green | 6.8% | 13G | May 15, 2026 | filing ↗ | |
| HBM Healthcare Investments (CAYMAN) Ltd. | 6.5% | 13G | May 15, 2026 | filing ↗ | |
| HBM Healthcare Investments (CAYMAN) Ltd. | 6.5% | 13G | Dec 27, 2024 | filing ↗ | |
| venBio Global Strategic Fund II L.P. | 6.4% | 13D | Feb 2, 2026 | filing ↗ | |
| venBio Global Strategic GP II, L.P. | 6.4% | 13D | Feb 2, 2026 | filing ↗ | |
| venBio Global Strategic GP II, Ltd. | 6.4% | 13D | Feb 2, 2026 | filing ↗ | |
| BlackRock, Inc. | 5.4% | 13G | Jul 27, 2026 | filing ↗ |
Planned insider sales (Form 144)
No sale notices filed in the last 12 months.
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Earnings (2.02) | Aug 6, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 6, 2026 | filing ↗ |
| Officer/director changes (5.02) | Jun 29, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Jun 29, 2026 | filing ↗ |
| Other events (8.01) | Jun 29, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 29, 2026 | filing ↗ |
| Material agreement (1.01) | Jun 25, 2026 | filing ↗ |
| Agreement terminated (1.02) | Jun 25, 2026 | filing ↗ |
| New financial obligation (2.03) | Jun 25, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 25, 2026 | filing ↗ |
| Shareholder vote (5.07) | Jun 10, 2026 | filing ↗ |
| Earnings (2.02) | May 8, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 8, 2026 | filing ↗ |
| Officer/director changes (5.02) | Apr 13, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Apr 13, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 13, 2026 | filing ↗ |
| Earnings (2.02) | Feb 27, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 27, 2026 | filing ↗ |
| Material agreement (1.01) | Jan 30, 2026 | filing ↗ |
| Other events (8.01) | Jan 30, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jan 30, 2026 | filing ↗ |
| Other events (8.01) | Jan 30, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jan 30, 2026 | filing ↗ |
| Officer/director changes (5.02) | Jan 21, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jan 21, 2026 | filing ↗ |
| Earnings (2.02) | Nov 7, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Nov 7, 2025 | filing ↗ |