Vaxart, Inc. - Common Stock, $0.0001 par value per share (VXRT)

CUSIP: 92243A200

Q4 2025 13F Holders as of 31 Dec 2025

Holder snapshot 6 signals
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
Security identity Names, identifiers, and filing context for this profile. 1 source field
Shares outstanding
227,895,837

Security key

92243A200

Report period

Q4 2025

Institutions

5

Top holders

5

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
1/15
Latest evidence
30 Sep 2025
13D/G 3/4/5 13F Lead comparable stake: 2.4% 14 rows are not safely comparable across share classes. 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%.

1 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 1
Sio Capital Management, LLC 2.4%

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%
Reported 13D/G · 31 Mar 2025
$2,400,883
5,583,448 shares
-$2,550,703 31 Mar 2025
Cezar Andrei Floroiu
3/4/5
President, Chief Exec Officer, Director
—
mixed-class rows
$1,082,037
1,202,735 shares
mixed-class rows
— 17 Mar 2023
MARSHALL WACE, LLP
13F
Company
13F
—
denominator unverified
$703,093
1,953,037 shares
— 30 Sep 2025
Phillip E. Lee
3/4/5
Chief Financial Officer
—
mixed-class rows
$360,149
1,241,619 shares
mixed-class rows
— 24 Mar 2025
Michael J. Finney
3/4/5
Director
—
mixed-class rows
$330,334
798,240 shares
mixed-class rows
— 13 Jun 2025
Todd C. Davis
3/4/5
Director
—
mixed-class rows
$300,913
170,129 shares
mixed-class rows
— 04 Aug 2022
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 Q2 2026 Across Filers

Q2 2026 holders
4
Q4 2025 holders
5
Holder diff
1
Investor Q2 2026 Shares Q4 2025 Shares Share Diff Share Chg % Q2 2026 value Q4 2025 value Value change Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
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