---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-24-133668"
form_type: "8-K"
ticker: null
cik: "0001888012"
company_name: "HilleVax, Inc."
filed_at: "2024-12-05T23:59:59+00:00"
generated_at: "2026-05-29T07:26:34.599605+00:00"
event_type: "other_material"
sentiment: "negative"
materiality_score: 0.9
calibrated_materiality_score: 0.9
confidence: "high"
source: SEC EDGAR
---

# HilleVax cuts 70% of workforce (28 employees) and three officers depart; expects $6.1M severance charges

## Summary
- Workforce reduction of 28 employees (approx. 70% of workforce) effective Dec 4, 2024; substantially complete by end of Jan 2025.
- Estimated charges of ~$6.1M for severance, benefits, and termination costs; majority recognized in Q4 2024.
- COO Sean McLoughlin, CMO Astrid Borkowski, and CBO Aditya Kohli cease officer roles Dec 19; McLoughlin and Kohli become consultants, Borkowski non-executive employee.
- Company to continue evaluating norovirus vaccine candidates and exploring business development and strategic alternatives.

## SEC filing metadata
- accession: 0000950170-24-133668
- form_type: 8-K
- cik: 0001888012
- company_name: HilleVax, Inc.
- filed_at: 2024-12-05T23:59:59+00:00
- event_type: other_material
- sentiment: negative
- materiality_score: 0.9
- calibrated_materiality_score: 0.9
- confidence: high
- sec_items: 2.05, 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1888012/000095017024133668/0000950170-24-133668-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1888012/000095017024133668/hlvx-20241204.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-24-133668
- JSON: https://secwatch.observer/filing/0000950170-24-133668.json
- Plain text: https://secwatch.observer/filing/0000950170-24-133668.txt

## Key facts
- Restructurings & Charges
  HilleVax, Inc. announced a restructuring with charges of approximately $6.1 million primarily related to employee severance payments, benefits and related termination costs (28 employees, constituting approximately 70% of the Company’s workforce).
  - Type: restructuring
  - Charge: approximately $6.1 million primarily related to employee severance payments, benefits and related termination costs
  - Headcount: 28 employees, constituting approximately 70% of the Company’s workforce
  source text: to be substantially complete by the end of January 2025. The Company currently estimates that it will incur charges associated with the workforce reduction of approximately $6.1 million primarily related to employee severance payments, benefits and related termination costs. The Company expects the majority of related charges to be recognized in the fourth
  evidence_url: https://www.sec.gov/Archives/edgar/data/1888012/000095017024133668/0000950170-24-133668-index.htm

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