Vaxart, Inc.
VXRT- Exchange
- OTC
- Industry
- Biological Products, (No Diagnostic Substances)
- SEC CIK
- 0000072444
No open-market purchases or sales by Vaxart, Inc. insiders were filed in the last 90 days; 4 institutions reported holding it in 13F filings for Q2 2026, worth $39.0K in total; no superinvestor holds it.
Holders of 5% or more of VXRT
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Vaxart, Inc., largest stake first. The change is against the holder's previous filing.
No holder currently reports owning 5% or more of Vaxart, Inc. on Schedule 13D or 13G.
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
12 Schedule 13D and 13G filings on Vaxart, Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Apr 8, 20253:14 PM ET | Sio Capital Management, LLC | 13G | 2.45%5.58M shares | −2.61 ppfrom 5.06%Below 5% | Mar 31, 2025 | SEC |
| Feb 10, 202512:58 PM ET | Sio Capital Management, LLC | 13G | 5.06%11.5M shares | New | Dec 31, 2024 | SEC |
| Feb 13, 2024 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Jan 19, 2024 | Ra Capital Management, L.P. | 13GOld format | – | New | – | SEC |
| Jul 7, 20234:35 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Feb 9, 2023 | Vanguard Group Inc | 13GOld format | – | New | – | SEC |
| Jan 31, 20235:52 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Jan 10, 2023 | State Street Corp | 13G/AOld format | – | – | – | SEC |
| Mar 10, 2022 | State Street Corp | 13G/AOld format | – | – | – | SEC |
| Feb 11, 2022 | State Street Corp | 13G/AOld format | – | – | – | SEC |
| Feb 7, 20224:40 PM ET | BlackRock Inc. | 13GOld format | – | New | – | SEC |
| Feb 11, 2021 | State Street Corp | 13GOld format | – | New | – | SEC |
Form 144: proposed insider sales
2 notices from officers, directors and other affiliates planning to sell Vaxart, Inc. shares, newest first.
| Filed (ET) | Seller | Shares to sell | Market value | Planned sale | Broker | Filing |
|---|---|---|---|---|---|---|
| Dec 8, 20254:34 PM ET | Michael Joseph FinneyFormer director | 40.0K | $14.4K | Dec 8, 2025 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| May 27, 20258:30 PM ET | Lee Phillip E (VXRT)Former Executive Officer | 81.4K | $37.4K | May 27, 2025 | Muriel Siebert & Co, Inc. | SEC |