Protagonist Therapeutics (PTGX) Tax Rate (2018 - 2026)

Protagonist Therapeutics has disclosed Tax Rate across 6 years of filings, most recently posting 65.76% for Q1 2026.

• Tax Rate for Q1 2026 came in at 65.76%, changed N/A year-over-year; the trailing twelve-month figure through Mar 2026 was 0.55% (up 95.0% YoY), and the FY2025 annual result was 0.65%, down 1455237.0% from the prior year.
• Tax Rate came in at 65.76% for Q1 2026 at Protagonist Therapeutics, down from 1.52% in the prior quarter.
• In the past five years, Tax Rate ranged from a high of 2.24% in Q2 2024 to a low of 65.76% in Q1 2026.
• The 3-year median for Tax Rate is 0.58% (2025), against an average of 9.18%.
• Peak annual rise in Tax Rate reached 16 bps in 2025, while the deepest fall reached 282 bps in 2025.
• Protagonist Therapeutics' Tax Rate stood at 1.37% in 2024, then dropped by 12 bps to 1.52% in 2025, then sank by 4217 bps to 65.76% in 2026.
• The last three Tax Rate figures came in at 65.76% (Q1 2026), 1.52% (Q4 2025), and 0.58% (Q2 2025), per Business Quant data.