🕵️ 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 $39K against $5.2M 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.

Aug 2025: net +$56K Sep 2025: net +$99K Oct 2025: net +$0 Nov 2025: net +$0 Dec 2025: net +$0 Jan 2026: net -$4K Mar 2026: net -$29K Mar 2026: net -$29K Apr 2026: net +$0 May 2026: net +$0 Jun 2026: net +$0 Jul 2026: net -$3K
Monthly net open-market insider flow, last 12 months (up = net buying)

Insider flow

3 buyers, $5.2M (4 lots) · 2 sellers, $39K (7 lots)

InsiderBuysBoughtSellsSoldLast
Corey S. Goodman1$5.0M 0–Feb 2, 2026
Lettmann Jason2$99K 2$28KMar 19, 2026
Shantharam Harish1$58K 0–Aug 18, 2025
Pinto Shelly0– 5$11KJul 1, 2026

5%+ holders

HolderStakeClassScheduleEvent
Corey S. Goodman 10.0% 13DFeb 2, 2026 filing ↗
RA Capital Management, L.P. 9.9% 13GFeb 9, 2026 filing ↗
Peter Kolchinsky 9.9% 13GFeb 9, 2026 filing ↗
Rajeev Shah 9.9% 13GFeb 9, 2026 filing ↗
RA Capital Healthcare Fund, L.P. 9.9% 13GFeb 9, 2026 filing ↗
Chen Yu 9.9% 13GFeb 6, 2026 filing ↗
Robert J. Adelman 9.9% 13DFeb 2, 2026 filing ↗
Redmile Group, LLC 6.8% 13GMay 15, 2026 filing ↗
Jeremy C. Green 6.8% 13GMay 15, 2026 filing ↗
HBM Healthcare Investments (CAYMAN) Ltd. 6.5% 13GMay 15, 2026 filing ↗
HBM Healthcare Investments (CAYMAN) Ltd. 6.5% 13GDec 27, 2024 filing ↗
Venbio Global Strategic Fund II L.P. 6.4% 13DFeb 2, 2026 filing ↗
Venbio Global Strategic GP II, L.P. 6.4% 13DFeb 2, 2026 filing ↗
Venbio Global Strategic GP II, Ltd. 6.4% 13DFeb 2, 2026 filing ↗
Blackrock, Inc. 5.4% 13GJul 27, 2026 filing ↗
TCG Crossover GP II, LLC 5.0% 13GFeb 6, 2026 filing ↗
TCG Crossover Fund II, L.P. 5.0% 13GFeb 6, 2026 filing ↗
TCG Crossover GP III, LLC 5.0% 13GFeb 6, 2026 filing ↗
TCG Crossover Fund III, L.P. 5.0% 13GFeb 6, 2026 filing ↗

Planned insider sales (Form 144)

No sale notices filed in the last 12 months.

Material events (8-K)

ItemEvent date
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 ↗
Officer/director changes (5.02)Sep 11, 2025 filing ↗
Other events (8.01)Sep 11, 2025 filing ↗
Financial Statements and Exhibits (9.01)Sep 11, 2025 filing ↗
Earnings (2.02)Aug 12, 2025 filing ↗
Officer/director changes (5.02)Aug 12, 2025 filing ↗