13D·WATCH Activist + Insider Intelligence Live feed Blog About Pricing
ISSUER PROFILE · CIK 0001620463 · CUSIP 04746L203

LeonaBio, Inc.LONA

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

Cross-Reference Snapshot

Activist filings
3
1 SCHEDULE 13D · 1 SCHEDULE 13D/A · 1 SC
Distinct filers
2
multi-activist cluster
Insiders (365d)
0
0 buys · 0 sales
Latest short DTC
1.00
as of 2026-08-31

13D/G Filings Timeline · 3 total

FiledFormFilerStakeSharesIntent
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
2026-08-31 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%
2026-04-15 78,425 1.94 -21.7%
2026-03-31 100,206 1.00 +127.7%
2026-03-13 44,014 1.00 +20.3%

Alert me when any activist files on LeonaBio, Inc.

Free. We email you when criteria match. One-click unsubscribe in every email.

Track every activist who touches this name.

Custom alerts · full feed · daily intelligence · API. From $49/mo.

See pricing →