Alx Oncology Holdings Inc
ALXO- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001810182
In the last 90 days, Alx Oncology Holdings Inc insiders filed 0 open-market purchases and 3 sales; 93 institutions reported holding it in 13F filings for Q2 2026, worth $217.9M in total; no superinvestor holds it.
Holders of 5% or more of ALXO
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Alx Oncology Holdings Inc, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Redmile Group, LLC | 13G/A | 8.50%4.64M shares | – | Aug 14, 20251 filing | Aug 14, 2025 | SEC |
| HBM Healthcare Investments (Cayman) Ltd. | 13G/A | 8.40%4.50M shares | +1.90 ppfrom 6.50% | Dec 27, 20242 filings | May 15, 2025 | SEC |
| Tang Capital Partners LP | 13G/A | 6.30%3.30M shares | – | Feb 14, 20251 filing | Feb 14, 2025 | SEC |
| Millennium Management LLC | 13G/A | 6.00%3.19M shares | +0.90 ppfrom 5.10% | Oct 8, 20252 filings | Oct 22, 2025 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
10 Schedule 13D and 13G filings on Alx Oncology Holdings Inc, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Nov 14, 20254:17 PM ET | Tang Capital Management LLCand 5 others | 13G/A | 0.00%0 shares | 0.00 ppfrom 0.00%Below 5% | Sep 30, 2025 | SEC |
| Nov 14, 20254:15 PM ET | Tang Capital Management LLCand 5 others | 13G/A | 0.00%0 shares | −5.90 ppfrom 5.90%Below 5% | Sep 30, 2025 | SEC |
| Oct 22, 20254:26 PM ET | Millennium Management LLCand 3 others | 13G/A | 6.00%3.19M shares | +0.90 ppfrom 5.10% | Oct 17, 2025 | SEC |
| Oct 8, 20254:17 PM ET | Millennium Management LLCand 2 others | 13G | 5.10%2.71M shares | New | Oct 2, 2025 | SEC |
| Aug 14, 20254:17 PM ET | Redmile Group, LLCand 2 others | 13G/A | 8.50%4.64M shares | – | Jun 30, 2025 | SEC |
| May 15, 20254:15 PM ET | Tang Capital Management LLCand 5 others | 13G/A | 5.90%3.16M shares | – | Mar 31, 2025 | SEC |
| May 15, 20254:05 PM ET | HBM Healthcare Investments (Cayman) Ltd. | 13G/A | 8.40%4.50M shares | +1.90 ppfrom 6.50% | Mar 31, 2025 | SEC |
| Feb 14, 20254:00 PM ET | Tang Capital Partners LPand 4 others | 13G/A | 6.30%3.30M shares | – | Dec 31, 2024 | SEC |
| Dec 27, 20244:05 PM ET | HBM Healthcare Investments (Cayman) Ltd. | 13G | 6.50%3.43M shares | New | Dec 18, 2024 | SEC |
| Dec 6, 202411:33 AM ET | FMR LLCand 1 other | 13G/A | 3.40%1.80M shares | –Below 5% | Nov 29, 2024 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Alx Oncology Holdings Inc shares.
No Form 144 notices for Alx Oncology Holdings Inc are on file.