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RA CAPITAL MANAGEMENT, L.P.

Position in KPTI — Karyopharm Therapeutics Inc.

CIK 1346824 BOSTON, MA

Position in KPTI

as of Mar 31, 2026 · filed May 15, 2026
Position Value
$10,679,661
New position
Shares Held
1,917,354
first reported quarter
Ownership
8.46%
of shares outstanding
% of Portfolio
0.11%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Mar 2026
1 quarter on record
Voting authority Sole 100% Shared 0% None 0%

Position in Biotechnology

Healthcare · as of Mar 31, 2026

RA CAPITAL MANAGEMENT, L.P. holds $9,134,713,488 across 74 Biotechnology names. KPTI ranks #65 (0.1% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in KPTI

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2 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $10,679,661 1,917,354
2026-03-26 $11,579,545 2,078,913