Alx Oncology Holdings
Ownership
Ownership Structure
Who owns Alx Oncology Holdings (ALXO)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 68.5% of the shares are freely tradable; institutional investors hold 83.8%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| RA Capital Management, LLC | 9.41 | 13,011,849 | +0.0 | 03/31/2026 |
| venBio Partners LLC | 9.32 | 12,884,638 | +0.0 | 06/30/2026 |
| Redmile Group, LLC | 5.35 | 7,392,504 | -7.2 | 06/30/2026 |
| Blackstone Inc | 4.21 | 5,826,544 | +0.0 | 03/31/2026 |
| Driehaus Capital Management LLC | 4.15 | 5,734,620 | +303.0 | 03/31/2026 |
| TCG Crossover Management, LLC | 4.09 | 5,655,487 | -56.5 | 06/30/2026 |
| Vanguard Capital Management, LLC | 3.02 | 4,179,736 | +0.0 | 03/31/2026 |
| Marshall Wace Asset Management Ltd | 2.72 | 3,757,216 | +14,144.8 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| HBM Healthcare Investments AG Ord | 6.21 | 8,590,692 | +0.0 | 06/30/2026 |
| Vanguard MStar Total Stk Mkt Idx Invest | 2.63 | 3,642,854 | +0.0 | 08/31/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Lettmann Jason | CHIEF EXECUTIVE OFFICER | 294,379 | 382,693 $ | Aug 17, 2026 | direct |
| Wong Shelly | SVP, FINANCE AND CAO | 87,828 | 114,176 $ | Aug 17, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Aug 17, 2026 | Lettmann Jason | CHIEF EXECUTIVE OFFICER | Sell | 2,230 | 1.93 | 4,304 |
| Aug 17, 2026 | Wong Shelly | SVP, FINANCE AND CAO | Sell | 573 | 1.93 | 1,106 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: September 25, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.