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Protagonist Therapeutics, Inc

For the period ended Sep 30, 2026. Filed Nov 6, 2026.

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About this filing

A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Sep 30, 2026 · Filed Nov 6, 2026

PTGX$135.90+2.9%Stored close · as of Nov 9, 2026

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Item 1A. Risk Factors

Our business, results of operations and financial condition are subject to various risks. These risks are described elsewhere in this Quarterly Report on Form 10-Q and in our other filings with the SEC, including our Annual Report on Form 10-K for the year ended December 31, 2025 and our Quarterly Report on Form 10-Q for the quarter ended June 30, 2026. Except as set forth in our Quarterly Report on Form 10-Q for the quarter ended June 30, 2026, there have been no material changes from the risk factors identified in the Company’s Annual Report on Form 10-K for the year ended December 31, 2025.

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The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.