Karyopharm Therapeutics Inc. - KPTI

Ownership (Schedule 13D / 13G) · latest 50 filings · Back to all files
Visible: 0
Filed Form Reporting person Percent Shares SEC
May 15, 2026 SCHEDULE 13G Ikarian Capital, LLC 0.0% 0 View
May 15, 2026 SCHEDULE 13G Neil Shahrestani 0.0% 0 View
May 15, 2026 SCHEDULE 13G ACORN BIOVENTURES, L.P. 2.8% 637,608 View
May 15, 2026 SCHEDULE 13G ACORN CAPITAL ADVISORS GP, LLC 2.8% 637,608 View
May 15, 2026 SCHEDULE 13G ACORN BIOVENTURES 2, L.P. 3.9% 880,505 View
May 15, 2026 SCHEDULE 13G Acorn Capital Advisors GP 2, LLC 3.9% 880,505 View
May 15, 2026 SCHEDULE 13G Anders Hove 6.7% 1,518,113 View
May 14, 2026 SCHEDULE 13G/A Affinity Asset Advisors, LLC 8.6% 2,073,517 View
May 14, 2026 SCHEDULE 13G/A Michael Cho 8.6% 2,073,517 View
May 13, 2026 SCHEDULE 13G Adage Capital Management, L.P. 8.08% 1,821,736 View
May 13, 2026 SCHEDULE 13G Robert Atchinson 8.08% 1,821,736 View
May 13, 2026 SCHEDULE 13G Phillip Gross 8.08% 1,821,736 View
May 12, 2026 SCHEDULE 13G THE GOLDMAN SACHS GROUP, INC. 5.1% 991,364 View
May 12, 2026 SCHEDULE 13G GOLDMAN SACHS & CO. LLC 5.1% 991,364 View
May 11, 2026 SCHEDULE 13G/A Opaleye Management Inc. 2.67% 619,089 View
May 11, 2026 SCHEDULE 13G/A Opaleye, L.P. 2.67% 619,089 View
May 11, 2026 SCHEDULE 13G/A James Silverman 2.67% 619,089 View
Apr 13, 2026 SCHEDULE 13G/A Integrated Core Strategies (US) LLC 1.9% 423,982 View
Apr 13, 2026 SCHEDULE 13G/A Millennium Management LLC 2.3% 511,571 View
Apr 13, 2026 SCHEDULE 13G/A Millennium Group Management LLC 2.3% 511,571 View
Apr 13, 2026 SCHEDULE 13G/A Israel A. Englander 2.3% 511,571 View
Apr 02, 2026 SCHEDULE 13G Commodore Capital LP 9.9% 1,950,000 View
Apr 02, 2026 SCHEDULE 13G Commodore Capital Master LP 9.9% 1,950,000 View
Apr 02, 2026 SCHEDULE 13G Robert Egen Atkinson 9.9% 1,950,000 View
Apr 02, 2026 SCHEDULE 13G Michael Kramarz 9.9% 1,950,000 View
Apr 02, 2026 SCHEDULE 13G RA Capital Management, L.P. 9.9% 2,078,913 View
Apr 02, 2026 SCHEDULE 13G Peter Kolchinsky 9.9% 2,078,913 View
Apr 02, 2026 SCHEDULE 13G Rajeev Shah 9.9% 2,078,913 View
Apr 02, 2026 SCHEDULE 13G RA Capital Healthcare Fund, L.P. 9.9% 2,078,913 View
Feb 17, 2026 SCHEDULE 13G/A T. Rowe Price Investment Management, Inc. 11.8% 2,244,421 View
Feb 12, 2026 SCHEDULE 13G/A Adage Capital Management, L.P. 2.38% 436,736 View
Feb 12, 2026 SCHEDULE 13G/A Robert Atchinson 2.38% 436,736 View
Feb 12, 2026 SCHEDULE 13G/A Phillip Gross 2.38% 436,736 View
Feb 10, 2026 SCHEDULE 13G Integrated Core Strategies (US) LLC 5.4% 997,577 View
Feb 10, 2026 SCHEDULE 13G Millennium Management LLC 5.5% 1,008,662 View
Feb 10, 2026 SCHEDULE 13G Millennium Group Management LLC 5.5% 1,008,662 View
Feb 10, 2026 SCHEDULE 13G Israel A. Englander 5.5% 1,008,662 View
Jan 29, 2026 SCHEDULE 13G/A Affinity Asset Advisors, LLC 8.6% 1,713,092 View
Jan 29, 2026 SCHEDULE 13G/A Michael Cho 8.6% 1,713,092 View
Percent = "% of class represented by amount beneficially owned" for this reporting person in the filed 13D/13G. Shares = reported beneficial ownership amount for the same row (not portfolio shares from 13F). Amendments (/A) can repeat the same holder over time, so rows should not be summed. Extraction is best-effort from filing text and can be missing or noisy; verify exact figures via the SEC link in each row.