Form4insider filings, from the source

Company · CIK 0001377121 · SIC 2834 — Pharmaceutical Preparations · Nasdaq

Protagonist Therapeutics, Inc · PTGX

Insider activity reported against this company. All insider holders · On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $0 · 0sales $18.2M · 1net −$18.2M
$10k$10k$1M$1M$100M$100MbuyssalesAug 28Sep 2Sep 7Sep 12Sep 18Sep 23Sep 28

Reported at this company — common stock

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 8, 2026 SForm 4 →Sep 10, 9:17 pm EDTDinesh V Ph D PatelPresident and CEO, Director125,000$145.92$18,240,568522,968−19.3%10b5-1
Sep 8, 2026 MForm 4 →Sep 10, 9:17 pm EDTDinesh V Ph D PatelPresident and CEO, Director125,000$21.58$2,697,500530,246—10b5-1
Sep 3, 2026 GForm 4 →Sep 8, 5:14 pm EDTDinesh V Ph D PatelPresident and CEO, Director510——522,968—

Reported at this company — derivatives (options, RSUs, warrants)

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 8, 2026 MForm 4 →Sep 10, 9:17 pm EDTDinesh V Ph D PatelPresident and CEO, Director125,000——0—10b5-1