Security key
92243A200
Vaxart, Inc. - Common Stock, $0.0001 par value per share (VXRT)
CUSIP: 92243A200
Q4 2025 13F Holders as of 31 Dec 2025
- Security type / class
- Equity / Common Stock, $0.0001 par value per share
- Total 13F shares
- 63,004
- Total 13F value
- $22,164
- Share change
- -2,275,367
- SEC-reported price per share
- $0.35
- Number of holders
- 5
- Value change
- -$817,278
- Number of buys
- 2
- Number of sells
- 13
- Shares outstanding
- 227,895,837
Holder snapshot
6 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q4 2025
Institutions
5
Top holders
5
VXRT full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q1 2026
Previous quarter: Q3 2025
Vaxart, Inc. SEC filings
Vaxart, Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 92243A200
Recent filing periods:
Ownership snapshot
Top reported holders of VXRT - Vaxart, Inc. - Common Stock, $0.0001 par value per share (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Sio Capital Management, LLC
Disclosed value leader
Sio Capital Management, LLC
Comparable rows
15/15
Latest evidence
30 Sep 2025
13D/G
13F
Lead comparable stake: 2.4%
13D/G row: Sio Capital Management, LLC
Showing 1-6 of 15 holder rows.
Quick read
Sio Capital Management, LLC leads the comparable SEC ownership view at 2.4%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Sio Capital Management, LLC's linked filing trail.
Comparable ownership
Top 5
Sio Capital Management, LLC
2.4%
MARSHALL WACE, LLP
0.86%
XTX Topco Ltd
0.04%
HBK Sorce Advisory LLC
0.03%
Beacon Capital Management, LLC
0.03%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Sio Capital Management, LLC |
13D/G
|
2.4%
|
$2,400,883
5,583,448 shares
|
-$2,550,703 | 31 Mar 2025 |
| MARSHALL WACE, LLP |
13F
Company
|
0.86%
|
$703,093
1,953,037 shares
|
— | 30 Sep 2025 |
| XTX Topco Ltd |
13F
Company
|
0.04%
|
$34,395
94,258 shares
|
— | 30 Sep 2025 |
| HBK Sorce Advisory LLC |
13F
Company
|
0.03%
|
$26,216
75,118 shares
|
— | 30 Sep 2025 |
| Beacon Capital Management, LLC |
13F
Company
|
0.03%
|
$22,006
60,314 shares
|
— | 30 Sep 2025 |
| Custos Family Office, LLC |
13F
Company
|
0.02%
|
$18,243
50,000 shares
|
— | 30 Sep 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q4 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
5
Shares
63,004
Rows available
5
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q4 2025 vs Q3 2025 Across Filers
Q3 2025 holders
17
Q4 2025 holders
5
Holder diff
-12
| Investor | Q3 2025 Shares | Q4 2025 Shares | Share Diff | Share Chg % | Q3 2025 value | Q4 2025 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend