All stock lists
Protagonist Therapeutics, Inc (PTGX)
NASDAQ: PTGX · Real-Time Price · USD
Healthcare · Biotechnology
139.88+1.45 (+1.04%)
Insider Score
––Not scored
PTGX Insider Score
Insiders filed in the last 90 days, but none of those trades qualified for scoring — round-trip buys and filings whose price is far off the market are excluded.
PTGX Stock Insider Trading Activity
PTGX stock’s insider trading shows 13 sales on the open market for an estimated $52.99M by company insiders over the last 6 months.
Not enough price history.
Insider Trading Activity (Form 4 Filings)
An insider trade occurs when an individual that has non-public information about a company buys or sells shares of that company’s stock. Examples of insiders include a company’s executive officers (CEO, CFO, COO), its board of directors, and its major shareholders. Insiders are required to submit their trading activity to the SEC through Form 4 filings.
Scored window · last 90 days0 qualifying buys0 insiders$0 bought— these are the numbers in the rankings table; the full history below shows every filing (buys, sells and older activity).
| Insider | Action | Shares | Avg Cost | Total | Δ Holdings | Held After | Date | Grade | Form 4 |
|---|---|---|---|---|---|---|---|---|---|
| Ali Asif CFO | Sell | 46,034 | $141.78 | $6.53M | 43.8% | 59,003 | Sep 30, 2026 | — | Form 4 |
| Ali Asif CFO | Option exercise | 28,438 | $23.42 | $666.02K | 41.7% | 96,670 | Sep 30, 2026 | — | Form 4 |
| Ali Asif CFO | Option exercise | 9,229 | $38.98 | $359.75K | 15.6% | 68,232 | Sep 30, 2026 | — | Form 4 |
| Ali Asif CFO | Sell | 12,595 | $141.77 | $1.79M | 10.7% | 105,037 | Sep 30, 2026 | — | Form 4 |
| Ali Asif CFO | Option exercise | 5,312 | $12.17 | $64.65K | 4.7% | 117,632 | Sep 30, 2026 | — | Form 4 |
| Ali Asif CFO | Option exercise | 15,650 | $19.19 | $300.32K | 16.2% | 112,320 | Sep 30, 2026 | — | Form 4 |
| PATEL DINESH V PH D CEO | Option exercise | 7,278 | $21.58 | $157.06K | 1.4% | 530,246 | Sep 10, 2026 | — | Form 4 |
| PATEL DINESH V PH D CEO | Sell | 7,278 | $144.10 | $1.05M | 1.4% | 522,968 | Sep 10, 2026 | — | Form 4 |
| PATEL DINESH V PH D CEO | Sell | 63,548 | $146.18 | $9.29M | 10.8% | 522,968 | Sep 9, 2026 | — | Form 4 |
| PATEL DINESH V PH D CEO | Option exercise | 63,548 | $21.58 | $1.37M | 12.2% | 586,516 | Sep 9, 2026 | — | Form 4 |
| PATEL DINESH V PH D CEO | Sell | 54,174 | $145.87 | $7.90M | 9.4% | 522,968 | Sep 8, 2026 | — | Form 4 |
| PATEL DINESH V PH D CEO | Option exercise | 54,174 | $21.58 | $1.17M | 10.4% | 577,142 | Sep 8, 2026 | — | Form 4 |
| PATEL DINESH V PH D CEO | Gift | 510 | — | — | 0.1% | 522,968 | Sep 3, 2026 | — | Form 4 |
| PATEL DINESH V PH D CEO | Sell | 34,239 | $148.52 | $5.09M | 6.1% | 523,478 | Aug 11, 2026 | — | Form 4 |
| PATEL DINESH V PH D CEO | Option exercise | 34,239 | $21.58 | $738.88K | 6.5% | 557,717 | Aug 11, 2026 | — | Form 4 |
| PATEL DINESH V PH D CEO | Sell | 65,761 | $149.11 | $9.81M | 11.2% | 523,478 | Aug 10, 2026 | — | Form 4 |
| PATEL DINESH V PH D CEO | Option exercise | 65,761 | $21.58 | $1.42M | 12.6% | 589,239 | Aug 10, 2026 | — | Form 4 |
| Waddill William D. Director | Option exercise | 9,000 | $16.54 | $148.86K | 115% | 16,825 | Jun 23, 2026 | — | Form 4 |
| Waddill William D. Director | Sell | 9,000 | $117.94 | $1.06M | 53.5% | 7,825 | Jun 23, 2026 | — | Form 4 |
| Waddill William D. Director | Option exercise | 3,000 | $11.80 | $35.40K | 38.3% | 10,825 | Jun 10, 2026 | — | Form 4 |
| Waddill William D. Director | Sell | 9,000 | $107.68 | $969.12K | 53.5% | 7,825 | Jun 10, 2026 | — | Form 4 |
| Waddill William D. Director | Option exercise | 6,000 | $16.54 | $99.24K | 55.4% | 16,825 | Jun 10, 2026 | — | Form 4 |
| Waddill William D. Director | Sell | 9,000 | $99.64 | $896.76K | 53.5% | 7,825 | May 29, 2026 | — | Form 4 |
| Waddill William D. Director | Option exercise | 9,000 | $11.80 | $106.20K | 115% | 16,825 | May 29, 2026 | — | Form 4 |
| PATEL DINESH V PH D CEO | Option exercise | 75,000 | $21.58 | $1.62M | 14.3% | 598,478 | May 12, 2026 | — | Form 4 |
| PATEL DINESH V PH D CEO | Sell | 75,000 | $100.12 | $7.51M | 12.5% | 523,478 | May 12, 2026 | — | Form 4 |
| Giraudo Bryan Director | Sell | 5,130 | $100.00 | $513.00K | 28.8% | 12,695 | May 8, 2026 | — | Form 4 |
| Giraudo Bryan Director | Sell | 6,000 | $100.00 | $600.00K | 100% | 0 | May 8, 2026 | — | Form 4 |
What these mean— the action is the SEC’s own Form 4 transaction code. Only a buy or a sell is an open-market trade; the rest are transfers, awards and exercises, which is why they carry no price.
- Sell (S) — Open-market or private sale
- Option exercise (M) — Exercise or conversion of an exempt derivative
- Gift (G) — Bona fide gift
Disclaimer — Informational only — not investment advice. Insider transaction data is sourced from SEC Form 4 filings; market data from public feeds and may be delayed. The Insider Score is a proprietary score for research purposes and does not predict future performance. Always do your own research.