Protagonist Therapeutics, Inc (PTGX)

Latest Insider Confidence Score

2026Q1

43.2
Bearish

Company insider confidence (by quarter)

2016Q3 2026Q1

Largest shareholders

Insider Role (last 12 mo) Shares held Filed at
Canaan X L.P. 10% Owner 2,116,552 May 21, 2018
Canaan Partners X LLC 10% Owner 2,116,552 May 21, 2018
Atchinson Robert — 2,056,076 Jun 1, 2017
Gross Phillip — 2,056,076 Jun 1, 2017
Adage Capital Partners Gp, L.L.C. — 2,056,076 Jun 1, 2017

Recent buy/sell transactions

Exec date Filing date Insider Role Signal Confidence Shares % of shares Under plan? Amount (USD)
Feb 17, 2026 Feb 18, 2026 Williams Lewis T Director Sell 17.5 -18,000 -69.70% ✗ $1.5M
Feb 6, 2026 Feb 6, 2026 Waddill William D. Director Sell 17.5 -20,000 -71.88% ✗ $1.7M
Jan 23, 2026 Jan 27, 2026 PATEL DINESH V PH D CEO Sell 17.5 -54,273 -1.85% ✗ $4.1M
Jan 27, 2026 Jan 27, 2026 Ali Asif CFO Sell 17.5 -46,203 -43.37% ✗ $3.8M
Jan 23, 2026 Jan 27, 2026 MOLINA ARTURO MD Chief Medical Officer Sell 17.5 -23,151 -8.40% ✗ $1.9M
Jan 20, 2026 Jan 21, 2026 MOLINA ARTURO MD Chief Medical Officer Sell 40.0 -9,514 -8.91% ✗ $784.7K
Jan 20, 2026 Jan 21, 2026 PATEL DINESH V PH D CEO Sell 37.5 -34,438 -5.60% ✗ $2.8M
Jan 20, 2026 Jan 21, 2026 Ali Asif CFO Sell 40.0 -8,588 -9.91% ✗ $708.3K
Jan 9, 2026 Jan 13, 2026 SELICK HAROLD E Director Neutral 52.5 - 0.00% ✗ -
Jan 2, 2026 Jan 6, 2026 SELICK HAROLD E Director Neutral 85.0 +2,695 6.15% ✗ -
Jan 2, 2026 Jan 6, 2026 Waddill William D. Director Neutral 90.0 +2,695 52.53% ✗ -
Jan 2, 2026 Jan 6, 2026 Giraudo Bryan Director Neutral 90.0 +2,695 11.65% ✗ -
Jan 2, 2026 Jan 6, 2026 Williams Lewis T Director Neutral 90.0 +2,695 52.53% ✗ -
Jan 2, 2026 Jan 6, 2026 O'Dowd Sarah A Director Neutral 90.0 +2,695 52.53% ✗ -
Jan 2, 2026 Jan 6, 2026 PATEL DINESH V PH D CEO Neutral 90.0 +95,400 18.36% ✗ -
Jan 2, 2026 Jan 6, 2026 Ali Asif CFO Neutral 90.0 +25,600 41.92% ✗ -
Jan 2, 2026 Jan 6, 2026 MOLINA ARTURO MD Chief Medical Officer Neutral 90.0 +25,600 31.53% ✗ -
Nov 21, 2025 Nov 24, 2025 PATEL DINESH V PH D CEO Neutral 52.5 -440 -0.08% ✗ -
Nov 17, 2025 Nov 19, 2025 MOLINA ARTURO MD Chief Medical Officer Sell 42.5 -2,712 -3.23% ✗ $229.9K
Oct 10, 2025 Oct 14, 2025 Waddill William D. Director Sell 7.5 -12,000 -70.05% ✓ $979.5K
Sep 22, 2025 Sep 24, 2025 Waddill William D. Director Sell 7.5 -4,000 -43.81% ✓ $257K
Sep 16, 2025 Sep 18, 2025 PATEL DINESH V PH D CEO Neutral 52.5 -620 -0.12% ✗ -
Aug 27, 2025 Aug 29, 2025 Waddill William D. Director Sell 10.0 -4,000 -30.46% ✓ $237K
Jul 25, 2025 Jul 28, 2025 PATEL DINESH V PH D CEO Sell 20.0 -10,415 -1.96% ✗ $570.5K
Jul 21, 2025 Jul 23, 2025 PATEL DINESH V PH D CEO Sell 37.5 -27,444 -4.91% ✗ $2.9M
Jul 16, 2025 Jul 18, 2025 PATEL DINESH V PH D CEO Neutral 37.5 -5,000 -0.89% ✗ -
Jun 13, 2025 Jun 17, 2025 PATEL DINESH V PH D CEO Neutral 45.0 -1,355 -0.24% ✗ -
Jun 9, 2025 Jun 11, 2025 MOLINA ARTURO MD Chief Medical Officer Sell 17.5 -20,000 -10.65% ✗ $1.1M
Apr 28, 2025 Apr 30, 2025 SELICK HAROLD E Director Neutral 52.5 - 0.00% ✗ -
Apr 22, 2025 Apr 23, 2025 Ali Asif CFO Sell 42.5 -1,756 -2.80% ✗ $80.8K
Mar 17, 2025 Mar 19, 2025 Waddill William D. Director Sell 15.0 -4,000 -23.35% ✓ $217K
Mar 13, 2025 Mar 14, 2025 MOLINA ARTURO MD Chief Medical Officer Sell 17.5 -30,514 -26.67% ✗ $1.7M
Mar 12, 2025 Mar 14, 2025 Ali Asif CFO Sell 17.5 -24,903 -28.39% ✗ $1.5M
Mar 5, 2025 Mar 5, 2025 PATEL DINESH V PH D CEO Neutral 52.5 - 0.00% ✗ -
Feb 19, 2025 Feb 20, 2025 PATEL DINESH V PH D CEO Sell 45.0 -5,359 -0.98% ✗ $204.6K
Jan 16, 2025 Jan 17, 2025 MOLINA ARTURO MD Chief Medical Officer Neutral 47.5 -3,640 -4.16% ✗ -
Jan 15, 2025 Jan 17, 2025 PATEL DINESH V PH D CEO Neutral 47.5 -12,636 -2.26% ✗ -
Jan 16, 2025 Jan 17, 2025 Ali Asif CFO Neutral 47.5 -3,918 -5.87% ✗ -
Jan 2, 2025 Jan 6, 2025 Waddill William D. Director Neutral 90.0 +5,130 42.75% ✗ -
Jan 2, 2025 Jan 6, 2025 O'Dowd Sarah A Director Neutral 90.0 +5,130 100.00% ✗ -
Jan 2, 2025 Jan 6, 2025 Williams Lewis T Director Neutral 90.0 +5,130 100.00% ✗ -
Jan 2, 2025 Jan 6, 2025 SELICK HAROLD E Director Neutral 90.0 +5,130 18.32% ✗ -
Jan 2, 2025 Jan 6, 2025 PATEL DINESH V PH D CEO Neutral 90.0 +149,800 36.67% ✗ -
Jan 2, 2025 Jan 6, 2025 Giraudo Bryan Director Neutral 90.0 +5,130 28.50% ✗ -
Jan 2, 2025 Jan 6, 2025 MOLINA ARTURO MD Chief Medical Officer Neutral 90.0 +41,088 88.47% ✗ -
Jan 2, 2025 Jan 6, 2025 Ali Asif CFO Neutral 90.0 +31,779 90.90% ✗ -
Nov 26, 2024 Nov 27, 2024 MOLINA ARTURO MD Chief Medical Officer Sell 17.5 -31,529 -18.45% ✗ $1.4M
Nov 25, 2024 Nov 27, 2024 Gupta Suneel Chief Development Officer Sell 16.3 -122,628 -18.99% ✗ $5.6M
Nov 25, 2024 Nov 27, 2024 PATEL DINESH V PH D CEO Sell 17.5 -107,000 -7.76% ✗ $4.7M
Nov 19, 2024 Nov 21, 2024 PATEL DINESH V PH D CEO Neutral 52.5 -1,000 -0.19% ✗ -
Nov 15, 2024 Nov 19, 2024 MOLINA ARTURO MD Chief Medical Officer Sell 42.5 -1,906 -3.94% ✗ $78.1K
Sep 11, 2024 Sep 13, 2024 Ali Asif CFO Sell 20.0 -14,203 -16.88% ✗ $631.9K
Sep 10, 2024 Sep 12, 2024 Waddill William D. Director Sell 7.5 -8,000 -40.00% ✓ $360K
Jul 24, 2024 Jul 26, 2024 Waddill William D. Director Sell 7.5 -8,000 -40.00% ✓ $320K
Jun 13, 2024 Jun 17, 2024 PATEL DINESH V PH D CEO Neutral 52.5 -1,000 -0.19% ✗ -
Jun 7, 2024 Jun 11, 2024 Waddill William D. Director Sell 7.5 -8,000 -40.00% ✓ $280K
Jun 7, 2024 Jun 11, 2024 PATEL DINESH V PH D CEO Sell 27.5 -35,000 -6.36% ✓ $1.2M
Apr 18, 2024 Apr 19, 2024 Ali Asif CFO Sell 46.3 -1,234 -3.21% ✗ $31K
Apr 1, 2024 Apr 2, 2024 PATEL DINESH V PH D CEO Sell 35.0 -25,000 -4.35% ✓ $707.8K
Mar 7, 2024 Mar 11, 2024 SELICK HAROLD E Director Neutral 52.5 - 0.00% ✗ -
Mar 1, 2024 Mar 1, 2024 PATEL DINESH V PH D CEO Sell 35.0 -30,000 -4.96% ✓ $948.6K
Mar 1, 2024 Mar 1, 2024 Waddill William D. Director Sell 7.5 -12,975 -51.95% ✓ $406.6K
Feb 29, 2024 Mar 1, 2024 Ali Asif CFO Sell 20.0 -24,187 -12.96% ✗ $764.4K
Feb 26, 2024 Feb 28, 2024 PATEL DINESH V PH D CEO Sell 40.0 -10,915 -1.77% ✗ $322.3K
Feb 26, 2024 Feb 28, 2024 Gupta Suneel Chief Development Officer Sell 42.5 -4,282 -2.28% ✗ $126.4K
Feb 15, 2024 Feb 20, 2024 PATEL DINESH V PH D CEO Sell 45.0 -3,717 -0.60% ✗ $104.9K
Jan 16, 2024 Jan 18, 2024 MOLINA ARTURO MD Chief Medical Officer Sell 48.8 -427 -0.88% ✗ $10.5K
Jan 16, 2024 Jan 18, 2024 Ali Asif CFO Sell 46.3 -1,452 -2.79% ✗ $35.8K
Jan 9, 2024 Jan 11, 2024 Gupta Suneel Chief Development Officer Sell 41.3 -5,000 -2.60% ✓ $125K
Jan 2, 2024 Jan 4, 2024 Waddill William D. Director Neutral 52.5 - 0.00% ✗ -
Jan 2, 2024 Jan 4, 2024 O'Dowd Sarah A Director Neutral 52.5 - 0.00% ✗ -
Jan 2, 2024 Jan 4, 2024 Gupta Suneel Chief Development Officer Neutral 90.0 +19,250 11.44% ✗ -
Jan 2, 2024 Jan 4, 2024 Williams Lewis T Director Neutral 52.5 - 0.00% ✗ -
Jan 2, 2024 Jan 4, 2024 SELICK HAROLD E Director Neutral 52.5 - 0.00% ✗ -
Jan 2, 2024 Jan 4, 2024 PATEL DINESH V PH D CEO Neutral 90.0 +84,875 15.88% ✗ -
Jan 2, 2024 Jan 4, 2024 Giraudo Bryan Director Neutral 52.5 - 0.00% ✗ -
Nov 15, 2023 Jan 4, 2024 MOLINA ARTURO MD Chief Medical Officer Sell 91.3 +24,402 100.11% ✗ $30K
Jan 2, 2024 Jan 4, 2024 Ali Asif CFO Neutral 90.0 +21,000 67.66% ✗ -
Dec 13, 2023 Dec 15, 2023 PATEL DINESH V PH D CEO Sell 20.0 -75,000 -12.31% ✓ $1.5M
Oct 26, 2023 Oct 30, 2023 Swisher Daniel N JR Director Neutral 52.5 - 0.00% ✗ -
Oct 30, 2023 Swisher Daniel N JR Director Neutral 52.5 - 0.00% ✗ -
Oct 19, 2023 Oct 23, 2023 Gupta Suneel Chief Development Officer Neutral 52.5 - 0.00% ✗ -
Oct 18, 2023 Oct 19, 2023 PATEL DINESH V PH D CEO Neutral 52.5 - 0.00% ✗ -
May 31, 2023 Jun 2, 2023 Gupta Suneel Chief Development Officer Sell 90.0 +7,850 5.60% ✗ $108.2K
Feb 22, 2023 Jun 2, 2023 PATEL DINESH V PH D CEO Sell 67.5 +7,835 0.44% ✗ $317.1K
May 31, 2023 Jun 2, 2023 Ali Asif CFO Sell 95.0 +7,850 33.86% ✗ $108.2K
Apr 18, 2023 Apr 19, 2023 Ali Asif CFO Sell 46.3 -1,189 -4.88% ✗ $27.6K
Apr 10, 2023 Apr 11, 2023 SELICK HAROLD E Director Neutral 52.5 - 0.00% ✗ -
Jan 16, 2023 Jan 18, 2023 Giraudo Bryan Director Neutral 52.5 - 0.00% ✗ -
Jan 16, 2023 Jan 18, 2023 Williams Lewis T Director Neutral 52.5 - 0.00% ✗ -
Jan 16, 2023 Jan 18, 2023 Waddill William D. Director Neutral 52.5 - 0.00% ✗ -
Jan 16, 2023 Jan 18, 2023 Noonberg Sarah B. Director Neutral 52.5 - 0.00% ✗ -
Jan 16, 2023 Jan 18, 2023 O'Dowd Sarah A Director Neutral 52.5 - 0.00% ✗ -
Jan 16, 2023 Jan 18, 2023 SELICK HAROLD E Director Neutral 52.5 - 0.00% ✗ -
Jan 16, 2023 Jan 18, 2023 Gupta Suneel Chief Development Officer Neutral 90.0 +20,625 17.54% ✗ -
Jan 16, 2023 Jan 18, 2023 Ali Asif CFO Neutral 90.0 +10,625 77.27% ✗ -
Jan 16, 2023 Jan 18, 2023 MOLINA ARTURO MD Chief Medical Officer Neutral 90.0 +3,125 14.71% ✗ -
May 4, 2022 Jan 18, 2023 PATEL DINESH V PH D CEO Neutral 37.5 -6,116 -0.52% ✗ -
Nov 16, 2022 Nov 17, 2022 Liu David Y Chief R&D Strategy Officer Neutral 52.5 - 0.00% ✗ -
Nov 15, 2022 Nov 17, 2022 MOLINA ARTURO MD Chief Medical Officer Neutral 90.0 +21,250 100.00% ✗ -