ALXO · Insider trading · 13F holders · Congress trades
Alx Oncology Holdings Inc (ALXO)
Who is buying and selling ALXO: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 9
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $5K
- Congress trades, 12 months
- 0
ALXO at a glance
- Between Aug 1, 2026 and Oct 29, 2026, 2 ALXO insiders filed 2 sales worth $5K on SEC Form 4, and no open-market purchases.
- 9 13F filers hold ALXO among their 50 largest positions, worth $84.7M combined. The biggest bets by portfolio weight are Caxton Corp (2.3%), 5AM Venture Management, LLC (2.2%) and Almitas Capital LLC (1.5%).
- No member of Congress has disclosed a trade in ALXO.
- ALXO last closed at $1.22 on Oct 29, 2026.
ALXO insider trading
Between Aug 1, 2026 and Oct 29, 2026, 2 ALXO insiders filed 2 sales worth $5K on SEC Form 4, and no open-market purchases.
| Filed | Insider | Role | Trade | Shares | Price | Value | Form 4 |
|---|---|---|---|---|---|---|---|
| Aug 18, 2026 | Lettmann Jason | CHIEF EXECUTIVE OFFICER, Director | Sale | 2,230 | $1.93 | $4K | SEC |
| Aug 18, 2026 | Wong Shelly | SVP, FINANCE AND CAO | Sale | 573 | $1.93 | $1K | SEC |
Who owns ALXO? Hedge funds and superinvestors
9 13F filers hold ALXO among their 50 largest positions, worth $84.7M combined. The biggest bets by portfolio weight are Caxton Corp (2.3%), 5AM Venture Management, LLC (2.2%) and Almitas Capital LLC (1.5%).
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| venBio Partners LLCHedge fund | 5.1% | $26.7M | 12,884,638 | +0.0% shares | Q2 2026 |
| Redmile Group, LLCHedge fund | 1.0% | $15.3M | 7,392,504 | -7.2% shares | Q2 2026 |
| Silverarc Capital Management, LLCHedge fund | 1.3% | $11.9M | 5,744,757 | — | Q2 2026 |
| TCG Crossover Management, LLCHedge fund | 0.3% | $11.7M | 5,655,487 | -56.5% shares | Q2 2026 |
| Vivo Capital, LLCHedge fund | 0.6% | $6.6M | 3,184,713 | +0.0% shares | Q2 2026 |
| 5AM Venture Management, LLCVenture capital | 2.2% | $6.3M | 3,057,325 | +0.0% shares | Q2 2026 |
| Almitas Capital LLCHedge fund | 1.5% | $6.1M | 2,938,431 | -7.4% shares | Q2 2026 |
| Caxton CorpInvestment manager | 2.3% | $43K | 20,946 | +0.0% shares | Q2 2026 |
| Bronte Capital Management Pty Ltd.Hedge fund | 0.0% | $37K | 18,095 | — | Q2 2026 |
Each manager counts with its latest 13F (Q2 2026: 9). Screen ALXO in the grand portfolio →
ALXO stock trades by members of Congress
No member of Congress has disclosed a trade in ALXO.
ALXO questions and answers
Are insiders buying ALXO stock?
Between Aug 1, 2026 and Oct 29, 2026, 2 ALXO insiders filed 2 sales worth $5K on SEC Form 4, and no open-market purchases.
Which hedge funds own ALXO?
9 13F filers hold ALXO among their 50 largest positions, worth $84.7M combined. The biggest bets by portfolio weight are Caxton Corp (2.3%), 5AM Venture Management, LLC (2.2%) and Almitas Capital LLC (1.5%).
Has Congress traded ALXO?
No member of Congress has disclosed a trade in ALXO.
Who is the largest holder of ALXO?
Among 13F filers, venBio Partners LLC reports the largest ALXO position, $26.7M (12,884,638 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Caxton Corp's: 2.3% of its portfolio.
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