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ISSUER PROFILE · CIK 0001503802 · CUSIP 48576U205

Karyopharm Therapeutics Inc.KPTI

3 13D/G filings 2 distinct filers 0 insider transactions (365d)

Cross-Reference Snapshot

Activist filings
3
2 SCHEDULE 13G/A · 1 SCHEDULE 13G
Distinct filers
2
multi-activist cluster
Insiders (365d)
0
0 buys · 0 sales
Latest short DTC
4.79
as of 2026-09-30

13D/G Filings Timeline · 3 total

FiledFormFilerStakeSharesIntent
2026-09-25 SCHEDULE 13G/A ACORN BIOVENTURES, L.P. — — view →
2026-09-25 SCHEDULE 13G/A ACORN BIOVENTURES, L.P. — — view →
2026-09-04 SCHEDULE 13G INTEGRATED CORE STRATEGIES (US) LLC — — view →

FINRA Short Interest History

SettlementShort InterestDays to Cover% Δ vs prior
2026-09-30 6,056,162 4.79 -23.0%
2026-09-15 7,865,168 5.01 -19.9%
2026-08-31 9,813,744 9.35 +1.8%
2026-08-14 9,640,954 4.46 +27.6%
2026-07-31 7,555,693 2.67 +19.7%
2026-07-15 6,312,305 17.13 -4.1%
2026-06-30 6,583,425 9.12 +17.9%
2026-06-15 5,585,175 16.79 +4.4%
2026-05-29 5,348,401 11.90 +1.4%
2026-05-15 5,276,525 11.52 -0.3%
2026-04-30 5,293,720 14.50 -7.4%
2026-04-15 5,718,250 8.99 +4.8%

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