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ISSUER PROFILE · CIK 0001377121

Protagonist Therapeutics, IncPTGX

2 13D/G filings 2 distinct filers 6 insider transactions (365d)

Cross-Reference Snapshot

Activist filings
2
2 SC
Distinct filers
2
multi-activist cluster
Insiders (365d)
6
0 buys · 3 sales
Latest short DTC
15.34
as of 2026-08-31

Institutional Consensus · 2026-06-30

Held by elite portfolio managers
2 holders · $8.76M
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 →

Form 4 Insider Transactions · last 365d

DateInsiderRoleTypeSharesPriceValue
2026-09-10 PATEL DINESH V PH D director, officer Option exercise 7,278 $21.58 $157K
2026-09-10 PATEL DINESH V PH D director, officer Sale 7,278 $144.10 $1.05M
2026-09-09 PATEL DINESH V PH D director, officer Option exercise 63,548 $21.58 $1.37M
2026-09-09 PATEL DINESH V PH D director, officer Sale 63,548 $146.18 $9.29M
2026-09-08 PATEL DINESH V PH D director, officer Option exercise 54,174 $21.58 $1.17M
2026-09-08 PATEL DINESH V PH D director, officer Sale 54,174 $145.87 $7.90M

FINRA Short Interest History

SettlementShort InterestDays to Cover% Δ vs prior
2026-08-31 7,712,543 15.34 -1.0%
2026-08-14 7,791,795 16.42 +3.3%
2026-07-31 7,543,109 14.21 -9.0%
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%

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