ADAGE CAPITAL PARTNERS GP, L.L.C. - 31 Dec 2024 SCHEDULE 13G/A Report for Compass Therapeutics, Inc. Common stock, par value $0.0001 per share (CMPX)

Filing Manager
ADAGE CAPITAL PARTNERS GP, L.L.C.
Reporting Manager
Adage Capital Management, L.P.
Security
Compass Therapeutics, Inc. Common stock, par value $0.0001 per share
Symbol
CMPX
Shares outstanding
137,495,642 shares
Disclosed Ownership
5,994,810 shares
Ownership
4.4%
Form type
SCHEDULE 13G/A
Filing time
12 Feb 2025, 09:39:25 UTC
Date of event
31 Dec 2024
SEC
View on sec.gov

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Quoteable Key Fact

"ADAGE CAPITAL PARTNERS GP, L.L.C. disclosed 4.4% ownership in Compass Therapeutics, Inc. Common stock, par value $0.0001 per share (CMPX) on 31 Dec 2024."

Quick Takeaways

  • ADAGE CAPITAL PARTNERS GP, L.L.C. filed SCHEDULE 13G/A for Compass Therapeutics, Inc. Common stock, par value $0.0001 per share (CMPX).
  • Disclosed ownership: 4.4%.
  • Date of event: 31 Dec 2024.

What Changed

  • No earlier schedule filing is available for direct comparison.
  • Current filing was accepted on 12 Feb 2025, 09:39.

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.

Official SEC Source

Backed by Schedule 13D/13G

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

See Original Filing

Reporting Managers (4)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Adage Capital Management, L.P. 4.4% 5,994,810 0 5,994,810 /s/ Robert Atchinson By: Adage Capital Partners LLC, its General Partner, By: Robert Atchinson, its Managing Member
Adage Capital Partners GP, L.L.C. 0% 0 0 0 /s/ Robert Atchinson By: Adage Capital Advisors, L.L.C., its Managing Member, By: Robert Atchinson, its Managing Member
Robert Atchinson 4.4% 5,994,810 0 5,994,810 /s/ Robert Atchinson Robert Atchinson, individually
Phillip Gross 4.4% 5,994,810 0 5,994,810 /s/ Phillip Gross Phillip Gross, individually

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