Nantahala Capital Management, LLC - 30 Sep 2025 SCHEDULE 13G/A Report for COMPASS Pathways plc American Depositary Shares, each representing one ordinary share, par value of GBP 0.008 per share (CMPS)

Filing Manager
Nantahala Capital Management, LLC
Reporting Manager
Nantahala Capital Management, LLC
Security
COMPASS Pathways plc American Depositary Shares, each representing one ordinary share, par value of GBP 0.008 per share
Symbol
CMPS
Shares outstanding
97,599,860 shares
Disclosed Ownership
3,484,315 shares
Ownership
3.6%
Form type
SCHEDULE 13G/A
Filing time
14 Nov 2025, 16:37:38 UTC
Date of event
30 Sep 2025
Previous filing
14 Aug 2025
SEC
View on sec.gov

Quoteable Key Fact

"Nantahala Capital Management, LLC disclosed 3.6% ownership in COMPASS Pathways plc American Depositary Shares, each representing one ordinary share, par value of GBP 0.008 per share (CMPS) on 30 Sep 2025."

Quick Takeaways

  • Nantahala Capital Management, LLC filed SCHEDULE 13G/A for COMPASS Pathways plc American Depositary Shares, each representing one ordinary share, par value of GBP 0.008 per share (CMPS).
  • Disclosed ownership: 3.6%.
  • Date of event: 30 Sep 2025.

What Changed

  • Previous schedule filing date: 14 Aug 2025.
  • Current filing was accepted on 14 Nov 2025, 16:37.

Why This Matters

  • This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
  • You can verify ownership claims directly against the original SEC filing.

Source Evidence

Backed by Schedule 13D/13G

Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.

See Original Filing

Reporting Managers (3)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Nantahala Capital Management, LLC 3.6% 3,484,315 0 3,484,315 /s/ Taki Vasilakis Taki Vasilakis / Chief Compliance Officer
Wilmot B. Harkey 3.6% 3,484,315 0 3,484,315 /s/ Wilmot B. Harkey Wilmot B. Harkey
Daniel Mack 3.6% 3,484,315 0 3,484,315 /s/ Daniel Mack Daniel Mack