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

Protagonist Therapeutics (PTGX) has 7 years of Tax Rate data on file, last reported at 65.85% in Q1 2026.

• For the quarter ending Q1 2026, Tax Rate changed N/A year-over-year to 65.85%; the trailing twelve-month figure through Mar 2026 stood at 0.55% (down 103.0% YoY), and the FY2025 full-year result was 0.65%, down 216.0% from the prior year.
• Tax Rate fell to 65.85% in Q1 2026, 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 65.85% in Q1 2026.
• A 4-year average of 15.26% and a median of 0.34% in 2024 frame the typical range for Tax Rate.
• Across the five-year window, Tax Rate soared 6217 bps in 2024 and plunged 303 bps in 2025, its largest moves.
• Tracing PTGX's Tax Rate over 4 years: stood at 60.65% in 2023, then soared by 102 bps to 1.51% in 2024, then sank by 201 bps to 1.52% in 2025, then sank by 4222 bps to 65.85% in 2026.
• Business Quant data shows PTGX's Tax Rate at 65.85% in Q1 2026, 1.52% in Q4 2025, and 0.58% in Q2 2025.