---
schema_version: "secwatch.filing_event.v1"
accession: "0001628280-24-039848"
form_type: "8-K"
ticker: "ACHR"
cik: "0001824502"
company_name: "Archer Aviation Inc."
filed_at: "2024-09-09T23:59:59+00:00"
generated_at: "2026-05-31T05:56:09.783392+00:00"
event_type: "other_material"
sentiment: "negative"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Archer CFO on medical leave; court orders Wisk warrant exercisable, ~$11,913/day interest

## Summary
- CFO Mark Mesler takes temporary medical leave effective Sep 9, 2024; expected return Q1 2025.
- VP of Finance Priya Gupta appointed acting CFO during leave.
- Court orders second tranche of Wisk warrant immediately exercisable; Archer must pay $11,912.53/day interest from Mar 21 to Aug 14, 2024.
- Court ruling stems from August 2023 settlement between Archer, Boeing, and Wisk Aero.

## SEC filing metadata
- accession: 0001628280-24-039848
- form_type: 8-K
- ticker: ACHR
- cik: 0001824502
- company_name: Archer Aviation Inc.
- filed_at: 2024-09-09T23:59:59+00:00
- event_type: other_material
- sentiment: negative
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 5.02, 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1824502/000162828024039848/0001628280-24-039848-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1824502/000162828024039848/achr-20240909.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001628280-24-039848
- JSON: https://secwatch.observer/filing/0001628280-24-039848.json
- Plain text: https://secwatch.observer/filing/0001628280-24-039848.txt

## Key facts
- Executive change
  Mark Mesler changed role as Chief Financial Officer at Archer Aviation Inc..
  - Action: take a temporary medical leave
  - Role: Chief Financial Officer
  source text: Effective September 9, 2024, Archer Aviation Inc.’s (the “Company” or “Archer”) Chief Financial Officer, Mark Mesler, will take a temporary medical leave.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1824502/000162828024039848/0001628280-24-039848-index.htm
- Executive change
  Priya Gupta was appointed as acting Chief Financial Officer and acting principal financial officer at Archer Aviation Inc..
  - Action: appointed
  - Role: acting Chief Financial Officer and acting principal financial officer
  source text: During Mr. Mesler’s leave, Priya Gupta, age 41, the Company’s Vice President of Finance, will serve as its acting Chief Financial Officer and acting principal financial officer.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1824502/000162828024039848/0001628280-24-039848-index.htm

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