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Protagonist Therapeutics, Inc (NASDAQ:PTGX)

US · Delayed Price · Currency is USD
148.18+3.02 (+2.08%)
 
Market Cap9.53B+148.3%
Revenue (ttm)281.99M+34.8%
Net Income82.91M+59.3%
EPS1.03+47.7%
Shares Out64.31M
PE Ratio121.65
Forward PEn/a
Dividendn/a
Ex-Dividend Daten/a
Volume478,019
Open147.18
Previous Close145.16
Day's Range145.91 - 150.48
52-Week Range57.90 - 160.81
Beta1.79
AnalystsBuy
Price Target169.38(+14.31%)
Earnings DateNov 5, 2026

About PTGX

Protagonist Therapeutics, Inc. is a biopharmaceutical firm dedicated to discovering and advancing peptide-based therapies. Their research primarily focuses on treatments for hematological and blood conditions, as well as inflammatory and immune-mediated disorders. The company's pipeline features rusfertide (PTG-300), an injectable hepcidin mimetic currently undergoing Phase II clinical trials for the management of polycythemia vera, hereditary hemochromatosis, and other blood-related ailments. Also in Phase II development is PN-943, an oral peptide engineered as a specific antagonist of alpha-4-beta-7 integrin, intended for addressing inflammatory bowel disease (IBD). Furthermore, they are progressing PN-235, an orally administered antagonist specifically targeting the interleukin-23 receptor, designed for both IBD and various non-IBD therapeutic applications. Protagonist Therapeutics maintains a licensing and collaborative agreement with Janssen Biotech, Inc. Founded in 2006, the company's headquarters are located in Newark, California.

Address
7707 Gateway Boulevard, Newark, CA, 94560, US
Market Cap
9.53 billion
Employees
141
Industrial Classification
Biotechnology

What Are Insiders Doing?

Open-market buy / sell balanceNet Selling
Sold
$33.13M
Bought
$0

View the trades behind this meter — each links to its SEC Form 4 →

Open-market Form 4 purchases (code P) vs sales (code S) on file for this company. Grants, option exercises and tax withholdings are excluded. Informational only.

1 Day
+2.08%
5 Days
+1.17%
1 Month
-0.07%
6 Months
+53.59%
1 Year
+148.29%

$PTGX stock is featured in our Insider Score Rankings, and Insider Trades datasets.

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Recently reported changes in PTGX holdings by institutional investors

Scanning latest 13F filings…

Latest 0 13F filings · Source: SEC EDGAR

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Insider Trading

Quarterly net insider trading by PTGX's directors and management

Net Shares Purchased by Insiders−300k−150k02025Q32025Q42026Q12026Q22026Q3

Source: SEC EDGAR (Form 4)

Corporate Lobbying

PTGX Estimated quarterly lobbying spending

Source: U.S. Senate LDA

U.S. Patents

New PTGX patent grants

Loading patent grants…

Source: USPTO Open Data Portal

Government Contracts

Estimated quarterly amount awarded to PTGX from public contracts

Source: USAspending.gov

Top ETF Holders

ETFs with the largest estimated holdings in PTGX

ETFEst. Holding Size
IJRiShares Core S&P Small-Cap ETF$583.68M
VTIVanguard Morningstar Total Stock Market ETF$280.41M
IWMiShares Russell 2000 ETF$226.80M
VBVanguard Morningstar Small-Cap ETF$202.07M
XBIState Street SPDR S&P Biotech ETF$145.86M
VBKVanguard Morningstar Small-Cap Growth ETF$116.95M

Estimated from each fund’s disclosed top holdings × AUM

PTGX Insider Score

Our composite score: insider buying, sector, volume, tone & dilution

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Bull Case vs Bear Case

AI-generated from PTGX’s recent data — informational, not investment advice

Generating analysis…

Insider Score

Our 0–100 Insider Score and the signals behind it.

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Recent Insider Activity

Buys
0
Sells
5
Buy Value
$0
Distinct Buyers
0

Frequently Asked Questions

Disclaimer — Informational only — not investment advice. Insider transaction data is sourced from SEC Form 4 filings; market data from public feeds and may be delayed. The Insider Score is a proprietary score for research purposes and does not predict future performance. Always do your own research.