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Protagonist Therapeutics (PTGX) Q2 2025 earnings results (second quarter 2025)

10-Q filed Aug 6, 2025

Protagonist Therapeutics (PTGX) reported revenue of $5.5M for the second quarter 2025 (Q2 2025), +33% from a year earlier and -80% from the quarter before. Operating margin was -758.0%, net loss $34.8M (627.0% of revenue).

Revenue$5.5M
Year over year+33%
Quarter over quarter-80%
Operating margin-758.0%
Net earnings−$34.8M

Protagonist Therapeutics, Q2 2025: revenue $5.5M (+33% year over year), operating margin -758.0%, net loss $34.8M, operating cash flow −$28.8M. The chart follows the revenue to costs, profit and cash.

Q2 2025AmountQ/QY/Y
Revenue$5.5M-80%+33%
Operating profit−$42.0M——
Net earnings−$34.8M——
Operating cash flow−$28.8M-123%—

What changed

Revenue was $5.5M in Q2 2025, up 33% year over year and down 80% from the previous quarter.

Operating costs exceeded revenue by $42.0M, an operating margin of -758.0%. Total costs grew 11% against revenue growth of 33%. The fastest-growing cost line was General & admin (+12%). The quarter ended with a net loss of $34.8M, wider than the previous quarter's $11.7M loss. Non-operating items added $7.4M, -22% of pre-tax earnings, so the bottom line overstates operating performance.

Operating cash flow was −$28.8M. Non-cash charges added back $304K of depreciation and amortization and $10.9M of share-based compensation. Working capital and other items used $5.2M. Capital expenditures of $813K exceeded it, leaving free cash flow of −$29.6M.

Questions

What was Protagonist Therapeutics' revenue in the second quarter 2025?

Protagonist Therapeutics (PTGX) reported revenue of $5.5M for the second quarter 2025 (Q2 2025), +33% from a year earlier and -80% from the quarter before.

Was Protagonist Therapeutics profitable in the second quarter 2025?

Operating loss was $42.0M (-758.0% of revenue) and net loss $34.8M.

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Source: Protagonist Therapeutics 10-Q on SEC EDGAR.