---
schema_version: "secwatch.filing_event.v1"
accession: "0001193805-21-001224"
form_type: "8-K"
ticker: "ARCT"
cik: "0001768224"
company_name: "Arcturus Therapeutics Holdings Inc."
filed_at: "2021-08-26T23:59:59+00:00"
generated_at: "2026-06-29T07:38:30.964107+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Arcturus terminates Providence joint venture; director resigns after Ultragenyx ownership drop

## Summary
- On Aug 20, 2021, Arcturus received notice from Providence to terminate the Amended and Restated Joint Venture, Research Collaboration and License Agreement; no termination penalties incurred.
- On Aug 25, 2021, director Karah Parschauer resigned from the board effective same day.
- Parschauer was Ultragenyx's nominee; her departure follows Ultragenyx's stock sales reducing its ownership below the contractual threshold.
- Company continues collaboration with Ultragenyx; board will remain at six members until a replacement is identified.

## SEC filing metadata
- accession: 0001193805-21-001224
- form_type: 8-K
- ticker: ARCT
- cik: 0001768224
- company_name: Arcturus Therapeutics Holdings Inc.
- filed_at: 2021-08-26T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 1.02, 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1768224/000119380521001224/0001193805-21-001224-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1768224/000119380521001224/e620900_8k-arct.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193805-21-001224
- JSON: https://secwatch.observer/filing/0001193805-21-001224.json
- Plain text: https://secwatch.observer/filing/0001193805-21-001224.txt

## Key facts
- Executive change
  Karah Parschauer resigned as Director at Arcturus Therapeutics Holdings Inc..
  - Action: resigned
  - Role: Director
  source text: On August 25, 2021, Karah Parschauer notified the board of directors (the “Board”) of Arcturus Therapeutics Holdings Inc. (the “Company”) of her resignation from the Board and any associated committees of the Board, effective August 25, 2021.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1768224/000119380521001224/0001193805-21-001224-index.htm

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