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ISSUER PROFILE · CIK 0001620463 · CUSIP 04746L203

LeonaBio, Inc.LONA

5 13D/G filings 2 distinct filers 0 insider transactions (365d)

Cross-Reference Snapshot

Activist filings
5
3 SCHEDULE 13D/A · 1 SCHEDULE 13D · 1 SC
Distinct filers
2
multi-activist cluster
Insiders (365d)
0
0 buys · 0 sales
Latest short DTC
1.00
as of 2026-10-15

13D/G Filings Timeline · 5 total

FiledFormFilerStakeSharesIntent
2026-10-28 SCHEDULE 13D/A Sermonix Pharmaceuticals, Inc. — 3,149,470 view →
2026-10-26 SCHEDULE 13D/A PERCEPTIVE ADVISORS LLC — 1,889,403 view →
2026-08-31 SCHEDULE 13D Sermonix Pharmaceuticals, Inc. 36.90% 5,502,402 view →
2026-08-25 SCHEDULE 13D/A PERCEPTIVE ADVISORS LLC 19.99% 1,889,403 view →
2022-07-01 SC PERCEPTIVE ADVISORS LLC — — view →

FINRA Short Interest History

SettlementShort InterestDays to Cover% Δ vs prior
2026-10-15 87,344 1.00 +355.7%
2026-09-30 19,166 1.00 -19.0%
2026-09-15 23,651 1.00 -41.3%
2026-08-31 40,293 1.00 +3.4%
2026-08-14 38,973 3.50 -4.3%
2026-07-31 40,714 1.99 -24.6%
2026-07-15 53,976 1.00 -3.7%
2026-06-30 56,070 2.95 +8.6%
2026-06-15 51,630 2.94 -8.8%
2026-05-29 56,592 1.16 -8.7%
2026-05-15 61,955 1.65 +6.8%
2026-04-30 58,004 1.57 -26.0%

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