Filing Manager
ACORN BIOVENTURES, L.P.
Reporting Manager
Anders Hove
Symbol
YMAB
Shares outstanding
44,232,814 shares
Disclosed Ownership
3,096,297 shares
Ownership
7%
Form type
SCHEDULE 13G/A
Filing time
15 Aug 2025, 10:31:34 UTC
Date of event
14 Aug 2025
Next filing
20 Aug 2025

Quoteable Key Fact

"ACORN BIOVENTURES, L.P. disclosed 7% ownership in Y-mAbs Therapeutics, Inc. Common stock, par value $0.0001 per share (YMAB) on 14 Aug 2025."

Quick Takeaways

  • ACORN BIOVENTURES, L.P. filed SCHEDULE 13G/A for Y-mAbs Therapeutics, Inc. Common stock, par value $0.0001 per share (YMAB).
  • Disclosed ownership: 7%.
  • Date of event: 14 Aug 2025.

What Changed

  • No earlier schedule filing is available for direct comparison.
  • Current filing was accepted on 15 Aug 2025, 10:31.

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 (5)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
ACORN BIOVENTURES, L.P. 3% 1,301,686 0 1,301,686 Anders Hove Manager of General Partner
ACORN CAPITAL ADVISORS GP, LLC 3% 1,301,686 0 1,301,686 Anders Hove Manager
ACORN BIOVENTURES 2, L.P. 4% 1,794,611 0 1,794,611 Anders Hove Manager of General Partner
Acorn Capital Advisors GP 2, LLC 4% 1,794,611 0 1,794,611 Anders Hove Manager
Anders Hove 7% 3,096,297 0 3,096,297 Anders Hove Individually