13D·WATCH Activist + Insider Intelligence Live feed Blog About Pricing
ISSUER PROFILE · CIK 0001377121

Protagonist Therapeutics, IncPTGX

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

Cross-Reference Snapshot

Activist filings
2
2 SC
Distinct filers
2
multi-activist cluster
Insiders (365d)
0
0 buys · 0 sales
Latest short DTC
9.53
as of 2026-07-15

Institutional Consensus · 2026-03-31

Held by elite portfolio managers
2 holders · $8.75M
Duquesne Family OfficeSoros Fund Management

13D/G Filings Timeline · 2 total

FiledFormFilerStakeSharesIntent
2020-06-08 SC Lilly Ventures Fund I LLC view →
2018-01-04 SC ADAGE CAPITAL PARTNERS GP, L.L.C. view →

FINRA Short Interest History

SettlementShort InterestDays to Cover% Δ vs prior
2026-07-15 8,292,656 9.53 +7.8%
2026-06-30 7,691,347 7.22 -0.5%
2026-06-15 7,728,416 11.59 +4.3%
2026-05-29 7,410,849 16.81 +1.6%
2026-05-15 7,293,819 12.76 -3.3%
2026-04-30 7,540,996 11.88 -10.2%
2026-04-15 8,397,278 11.61 -2.7%
2026-03-31 8,626,880 7.64 +7.0%
2026-03-13 8,060,991 10.88 -1.6%
2026-02-27 8,192,998 16.48 -3.0%
2026-02-13 8,443,732 13.31 +3.8%
2026-01-30 8,132,629 10.56 -2.0%

Alert me when any activist files on Protagonist Therapeutics, 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 →