---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-24-088549"
form_type: "8-K"
ticker: null
cik: "0001888012"
company_name: "HilleVax, Inc."
filed_at: "2024-07-31T23:59:59+00:00"
generated_at: "2026-05-31T14:30:48.089124+00:00"
event_type: "other_material"
sentiment: "negative"
materiality_score: 0.8
calibrated_materiality_score: 0.8
confidence: "high"
source: SEC EDGAR
---

# HilleVax cuts 41 employees (~40% workforce); expects $3.4M in severance charges

## Summary
- Workforce reduced by ~41 employees (40%) to lower operating expenses while preserving core capabilities.
- Estimated severance and related charges of $3.4M, majority expected in Q3 2024.
- Company will explore continued development of HIL-214 and HIL-216 norovirus vaccine candidates and business development.
- Workforce reduction approved by board on July 26, 2024; substantial completion in Q3 2024.
- Risks include inability to realize expected cash savings, retain key personnel, or find development path for pipeline candidates.

## SEC filing metadata
- accession: 0000950170-24-088549
- form_type: 8-K
- cik: 0001888012
- company_name: HilleVax, Inc.
- filed_at: 2024-07-31T23:59:59+00:00
- event_type: other_material
- sentiment: negative
- materiality_score: 0.8
- calibrated_materiality_score: 0.8
- confidence: high
- sec_items: 2.05
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1888012/000095017024088549/0000950170-24-088549-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1888012/000095017024088549/hlvx-20240726.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-24-088549
- JSON: https://secwatch.observer/filing/0000950170-24-088549.json
- Plain text: https://secwatch.observer/filing/0000950170-24-088549.txt

## Key facts
- Restructurings & Charges
  HilleVax, Inc. announced a restructuring with charges of workforce reduction of approximately 41 employees affecting entire company (approximately 41 employees, constituting approximately 40% of the Company’s workforce).
  - Type: restructuring
  - Charge: workforce reduction of approximately 41 employees
  - Affected area: entire company
  - Headcount: approximately 41 employees, constituting approximately 40% of the Company’s workforce
  source text: On July 31, 2024, HilleVax, Inc. (the “Company”) announced a workforce reduction of approximately 41 employees, constituting approximately 40% of the Company’s workforce.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1888012/000095017024088549/0000950170-24-088549-index.htm

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