Arturo Molina MD, Chief Medical Officer of Protagonist Therapeutics Inc ($PTGX), sold shares on the open market seven times over the past year, totaling about $4.05 million. His most recent sale occurred on January 27, 2026. These $PTGX insider sales rank 2,238th among 11,678 individual insiders in our database, where the average sale amount is $8.6 million across about 6.4 transactions. Molina made no open market purchases in the last 365 days.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 26, 2026 | Protagonist Therapeutics, Inc | $PTGX | MOLINA ARTURO MD | Chief Medical Officer | S | Common Stock | 15000 | $104.79 | 84,115.0000 | 63,573,048 | 15.13% | 0.02% |
| March 26, 2026 | Protagonist Therapeutics, Inc | $PTGX | MOLINA ARTURO MD | Chief Medical Officer | M | Common Stock | 15000 | $8.04 | 99,115.0000 | 63,573,048 | 17.83% | 0.02% |
| March 26, 2026 | Protagonist Therapeutics, Inc | $PTGX | MOLINA ARTURO MD | Chief Medical Officer | M | Stock Option (right to buy) | 15000 | $0.00 | 50,971.0000 | 63,573,048 | 22.74% | 0.02% |
| Jan. 27, 2026 | Protagonist Therapeutics, Inc | $PTGX | MOLINA ARTURO MD | Chief Medical Officer | M | Stock Option (right to buy) | 5000 | $0.00 | 65,971.0000 | 63,573,048 | 7.05% | 0.01% |
| Jan. 26, 2026 | Protagonist Therapeutics, Inc | $PTGX | MOLINA ARTURO MD | Chief Medical Officer | M | Stock Option (right to buy) | 5000 | $0.00 | 70,971.0000 | 63,573,048 | 6.58% | 0.01% |
| Jan. 27, 2026 | Protagonist Therapeutics, Inc | $PTGX | MOLINA ARTURO MD | Chief Medical Officer | S | Common Stock | 5000 | $82.00 | 84,115.0000 | 63,573,048 | 5.61% | 0.01% |
| Jan. 26, 2026 | Protagonist Therapeutics, Inc | $PTGX | MOLINA ARTURO MD | Chief Medical Officer | S | Common Stock | 5000 | $82.28 | 84,115.0000 | 63,573,048 | 5.61% | 0.01% |
| Jan. 27, 2026 | Protagonist Therapeutics, Inc | $PTGX | MOLINA ARTURO MD | Chief Medical Officer | M | Common Stock | 5000 | $8.04 | 89,115.0000 | 63,573,048 | 5.94% | 0.01% |
| Jan. 23, 2026 | Protagonist Therapeutics, Inc | $PTGX | MOLINA ARTURO MD | Chief Medical Officer | S | Common Stock | 13151 | $82.42 | 84,115.0000 | 63,573,048 | 13.52% | 0.02% |
| Jan. 26, 2026 | Protagonist Therapeutics, Inc | $PTGX | MOLINA ARTURO MD | Chief Medical Officer | M | Common Stock | 5000 | $8.04 | 89,115.0000 | 63,573,048 | 5.94% | 0.01% |
| Jan. 20, 2026 | Protagonist Therapeutics, Inc | $PTGX | MOLINA ARTURO MD | Chief Medical Officer | S | Common Stock | 9514 | $82.48 | 97,266.0000 | 63,573,048 | 8.91% | 0.01% |
| Jan. 2, 2026 | Protagonist Therapeutics, Inc | $PTGX | MOLINA ARTURO MD | Chief Medical Officer | A | Common Stock | 25600 | $0.00 | 106,780.0000 | 63,573,048 | 31.53% | 0.04% |
| Jan. 2, 2026 | Protagonist Therapeutics, Inc | $PTGX | MOLINA ARTURO MD | Chief Medical Officer | A | Stock Option (right to buy) | 32000 | $0.00 | 32,000.0000 | 63,573,048 | 9999.99% | 0.05% |
| Nov. 17, 2025 | Protagonist Therapeutics, Inc | $PTGX | MOLINA ARTURO MD | Chief Medical Officer | S | Common Stock | 2712 | $84.77 | 81,180.0000 | 63,772,332 | 3.23% | 0.00% |
| June 9, 2025 | Protagonist Therapeutics, Inc | $PTGX | MOLINA ARTURO MD | Chief Medical Officer | M | Common Stock | 10000 | $8.04 | 93,892.0000 | 62,963,806 | 11.92% | 0.02% |
| June 9, 2025 | Protagonist Therapeutics, Inc | $PTGX | MOLINA ARTURO MD | Chief Medical Officer | S | Common Stock | 10000 | $55.51 | 83,892.0000 | 62,963,806 | 10.65% | 0.02% |
| June 10, 2025 | Protagonist Therapeutics, Inc | $PTGX | MOLINA ARTURO MD | Chief Medical Officer | M | Common Stock | 10000 | $8.04 | 93,892.0000 | 62,963,806 | 11.92% | 0.02% |
| June 10, 2025 | Protagonist Therapeutics, Inc | $PTGX | MOLINA ARTURO MD | Chief Medical Officer | S | Common Stock | 10000 | $57.03 | 83,892.0000 | 62,963,806 | 10.65% | 0.02% |
| June 9, 2025 | Protagonist Therapeutics, Inc | $PTGX | MOLINA ARTURO MD | Chief Medical Officer | M | Stock Option (right to buy) | 10000 | $0.00 | 85,971.0000 | 62,963,806 | 10.42% | 0.02% |
| June 10, 2025 | Protagonist Therapeutics, Inc | $PTGX | MOLINA ARTURO MD | Chief Medical Officer | M | Stock Option (right to buy) | 10000 | $0.00 | 75,971.0000 | 62,963,806 | 11.63% | 0.02% |
| March 13, 2025 | Protagonist Therapeutics, Inc | $PTGX | MOLINA ARTURO MD | Chief Medical Officer | M | Common Stock | 28437 | $23.42 | 112,329.0000 | 65,077,722 | 33.90% | 0.04% |
| March 13, 2025 | Protagonist Therapeutics, Inc | $PTGX | MOLINA ARTURO MD | Chief Medical Officer | M | Common Stock | 2077 | $38.98 | 114,406.0000 | 65,077,722 | 1.85% | 0.00% |
| March 13, 2025 | Protagonist Therapeutics, Inc | $PTGX | MOLINA ARTURO MD | Chief Medical Officer | S | Common Stock | 30514 | $55.74 | 83,892.0000 | 65,077,722 | 26.67% | 0.05% |
| March 13, 2025 | Protagonist Therapeutics, Inc | $PTGX | MOLINA ARTURO MD | Chief Medical Officer | M | Stock Option (right to buy) | 28437 | $0.00 | 69,063.0000 | 65,077,722 | 29.17% | 0.04% |
| March 13, 2025 | Protagonist Therapeutics, Inc | $PTGX | MOLINA ARTURO MD | Chief Medical Officer | M | Stock Option (right to buy) | 2077 | $0.00 | 47,785.0000 | 65,077,722 | 4.17% | 0.00% |
| Jan. 16, 2025 | Protagonist Therapeutics, Inc | $PTGX | MOLINA ARTURO MD | Chief Medical Officer | S | Common Stock | 3252 | $0.00 | 83,892.0000 | 65,077,722 | 3.73% | 0.00% |
| Jan. 16, 2025 | Protagonist Therapeutics, Inc | $PTGX | MOLINA ARTURO MD | Chief Medical Officer | S | Common Stock | 388 | $0.00 | 87,144.0000 | 65,077,722 | 0.44% | 0.00% |
| Jan. 2, 2025 | Protagonist Therapeutics, Inc | $PTGX | MOLINA ARTURO MD | Chief Medical Officer | A | Stock Option (right to buy) | 49862 | $0.00 | 49,862.0000 | 65,077,722 | 9999.99% | 0.08% |
| Jan. 2, 2025 | Protagonist Therapeutics, Inc | $PTGX | MOLINA ARTURO MD | Chief Medical Officer | A | Common Stock | 41088 | $0.00 | 87,532.0000 | 65,077,722 | 88.47% | 0.06% |
| Nov. 27, 2024 | Protagonist Therapeutics, Inc | $PTGX | MOLINA ARTURO MD | Chief Medical Officer | M | Common Stock | 10000 | $8.04 | 56,444.0000 | 61,767,934 | 21.53% | 0.02% |
| Nov. 26, 2024 | Protagonist Therapeutics, Inc | $PTGX | MOLINA ARTURO MD | Chief Medical Officer | M | Stock Option (right to buy) | 5529 | $0.00 | 121,971.0000 | 61,767,934 | 4.34% | 0.01% |
| Nov. 27, 2024 | Protagonist Therapeutics, Inc | $PTGX | MOLINA ARTURO MD | Chief Medical Officer | M | Stock Option (right to buy) | 10000 | $0.00 | 111,971.0000 | 61,767,934 | 8.20% | 0.02% |
| Nov. 27, 2024 | Protagonist Therapeutics, Inc | $PTGX | MOLINA ARTURO MD | Chief Medical Officer | M | Stock Option (right to buy) | 16000 | $0.00 | 95,971.0000 | 61,767,934 | 14.29% | 0.03% |
| Nov. 27, 2024 | Protagonist Therapeutics, Inc | $PTGX | MOLINA ARTURO MD | Chief Medical Officer | M | Common Stock | 16000 | $8.04 | 62,444.0000 | 61,767,934 | 34.45% | 0.03% |
| Nov. 27, 2024 | Protagonist Therapeutics, Inc | $PTGX | MOLINA ARTURO MD | Chief Medical Officer | S | Common Stock | 10000 | $44.50 | 46,444.0000 | 61,767,934 | 17.72% | 0.02% |
| Nov. 27, 2024 | Protagonist Therapeutics, Inc | $PTGX | MOLINA ARTURO MD | Chief Medical Officer | S | Common Stock | 16000 | $44.83 | 46,444.0000 | 61,767,934 | 25.62% | 0.03% |
| Nov. 26, 2024 | Protagonist Therapeutics, Inc | $PTGX | MOLINA ARTURO MD | Chief Medical Officer | S | Common Stock | 5529 | $45.60 | 46,444.0000 | 61,767,934 | 10.64% | 0.01% |
| Nov. 26, 2024 | Protagonist Therapeutics, Inc | $PTGX | MOLINA ARTURO MD | Chief Medical Officer | M | Common Stock | 5529 | $8.04 | 51,973.0000 | 61,767,934 | 11.90% | 0.01% |
| Nov. 15, 2024 | Protagonist Therapeutics, Inc | $PTGX | MOLINA ARTURO MD | Chief Medical Officer | S | Common Stock | 1906 | $40.98 | 46,444.0000 | 61,767,934 | 3.94% | 0.00% |
| Jan. 16, 2024 | Protagonist Therapeutics, Inc | $PTGX | MOLINA ARTURO MD | Chief Medical Officer | F | Common Stock | 427 | $24.63 | 48,350.0000 | 56,763,559 | 0.88% | 0.00% |
| Jan. 2, 2024 | Protagonist Therapeutics, Inc | $PTGX | MOLINA ARTURO MD | Chief Medical Officer | A | Stock Option (right to buy) | 97500 | $0.00 | 97,500.0000 | 56,763,559 | 9999.99% | 0.17% |
| Jan. 2, 2024 | Protagonist Therapeutics, Inc | $PTGX | MOLINA ARTURO MD | Chief Medical Officer | A | Common Stock | 26250 | $0.00 | 48,777.0000 | 56,763,559 | 116.53% | 0.05% |
| Nov. 15, 2023 | Protagonist Therapeutics, Inc | $PTGX | MOLINA ARTURO MD | Chief Medical Officer | S | Common Stock | 1848 | $16.24 | 22,527.0000 | 59,182,899 | 7.58% | 0.00% |