---
schema_version: "secwatch.filing_event.v1"
accession: "0001437749-25-004824"
form_type: "8-K"
ticker: "VXRT"
cik: "0000072444"
company_name: "Vaxart, Inc."
filed_at: "2025-02-24T23:59:59+00:00"
generated_at: "2026-05-26T06:36:18.486480+00:00"
event_type: "regulatory"
sentiment: "negative"
materiality_score: 0.85
calibrated_materiality_score: 0.85
confidence: "high"
source: SEC EDGAR
---

# Vaxart receives stop work order from BARDA on Project Agreement; work halted for 90 days

## Summary
- Received stop work order from ATI (BARDA) on Feb 21, 2025 for all efforts under Project Agreement RRPV-24-04-NGVx-003.
- Exception: Company may continue per protocol follow-up for the 400-person cohort.
- Stop work is effective for 90 days; ATI may cancel, extend, or terminate within that period.
- Project Agreement dated June 13, 2024; no financial impact disclosed yet.

## SEC filing metadata
- accession: 0001437749-25-004824
- form_type: 8-K
- ticker: VXRT
- cik: 0000072444
- company_name: Vaxart, Inc.
- filed_at: 2025-02-24T23:59:59+00:00
- event_type: regulatory
- sentiment: negative
- materiality_score: 0.85
- calibrated_materiality_score: 0.85
- confidence: high
- sec_items: 1.01, 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/72444/000143774925004824/0001437749-25-004824-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/72444/000143774925004824/vxrt20250222_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001437749-25-004824
- JSON: https://secwatch.observer/filing/0001437749-25-004824.json
- Plain text: https://secwatch.observer/filing/0001437749-25-004824.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.