PTGX
Protagonist Therapeutics, Inc.
NASDAQ · Healthcare · Biotechnology · US
$145.11
−2.48%0
Insider buys (3m)
4
Insider sells (3m)
-$16.9M
Net value (3m)
+49.7%
Price return (3m)
Form 4 filings
| Date | Insider | Activity | Shares | Price |
|---|---|---|---|---|
| Aug 12, 2026 | PATEL DINESH V PH D · director, officer: President and CEO | Sale | 65,761 | $149 |
| Aug 12, 2026 | PATEL DINESH V PH D · director, officer: President and CEO | M-Exempt | 65,761 | $22 |
| Aug 12, 2026 | PATEL DINESH V PH D · director, officer: President and CEO | Sale | 34,239 | $149 |
| Aug 12, 2026 | PATEL DINESH V PH D · director, officer: President and CEO | M-Exempt | 34,239 | $22 |
| Jun 25, 2026 | Waddill William D. · director | M-Exempt | 9,000 | $17 |
| Jun 25, 2026 | Waddill William D. · director | Sale | 9,000 | $118 |
| Jun 11, 2026 | Waddill William D. · director | M-Exempt | 6,000 | $17 |
| Jun 11, 2026 | Waddill William D. · director | Sale | 9,000 | $108 |
| Jun 11, 2026 | Waddill William D. · director | M-Exempt | 3,000 | $12 |
| Jun 1, 2026 | Waddill William D. · director | Sale | 9,000 | $100 |
| Jun 1, 2026 | Waddill William D. · director | M-Exempt | 9,000 | $12 |
| May 12, 2026 | PATEL DINESH V PH D · director, officer: President and CEO | M-Exempt | 75,000 | $22 |
| May 12, 2026 | PATEL DINESH V PH D · director, officer: President and CEO | Sale | 75,000 | $100 |
| May 11, 2026 | Giraudo Bryan · director | Sale | 36,000 | $100 |
| May 11, 2026 | Giraudo Bryan · director | M-Exempt | 12,000 | $6.98 |
| May 11, 2026 | Giraudo Bryan · director | M-Exempt | 24,000 | $6.45 |
| May 11, 2026 | Giraudo Bryan · director | Sale | 12,000 | $100 |
| May 11, 2026 | Giraudo Bryan · director | Sale | 6,000 | $100 |
| May 11, 2026 | Giraudo Bryan · director | Sale | 5,130 | $100 |
| Apr 21, 2026 | Ali Asif · officer: Chief Financial Officer | Sale | 1,750 | $105 |
| Mar 27, 2026 | SELICK HAROLD E · director | M-Exempt | 24,000 | $13 |
| Mar 27, 2026 | SELICK HAROLD E · director | Sale | 24,000 | $105 |
| Mar 27, 2026 | MOLINA ARTURO MD · officer: Chief Medical Officer | M-Exempt | 15,000 | $8.04 |
| Mar 27, 2026 | MOLINA ARTURO MD · officer: Chief Medical Officer | Sale | 15,000 | $105 |
| Mar 27, 2026 | Ali Asif · officer: Chief Financial Officer | M-Exempt | 19,500 | $19 |
| Mar 27, 2026 | Ali Asif · officer: Chief Financial Officer | M-Exempt | 5,265 | $12 |
| Mar 27, 2026 | Ali Asif · officer: Chief Financial Officer | Sale | 24,765 | $104 |
| Mar 25, 2026 | PATEL DINESH V PH D · director, officer: President and CEO | M-Exempt | 59 | $8.58 |
| Mar 25, 2026 | PATEL DINESH V PH D · director, officer: President and CEO | M-Exempt | 54,641 | $8.58 |
| Mar 25, 2026 | PATEL DINESH V PH D · director, officer: President and CEO | Sale | 54,641 | $101 |
Institutional positioning
13F filings over the trailing two quarters
New 120Increased 250Reduced 203Sold out 36
| Filer | Action | Shares | Filed |
|---|---|---|---|
| BlackRock, Inc. | Increased | 10,307,837 | Aug 7, 2026 |
| BLACKROCK, INC. | Increased | 9,779,369 | May 13, 2026 |
| FARALLON CAPITAL MANAGEMENT LLC | Increased | 6,348,906 | May 15, 2026 |
| FARALLON CAPITAL MANAGEMENT LLC | Unchanged | 6,348,906 | Aug 14, 2026 |
| UBS GROUP AG | Increased | 5,177,796 | May 5, 2026 |
| RTW INVESTMENTS, LP | Increased | 5,061,175 | Aug 14, 2026 |
| RTW INVESTMENTS, LP | Unchanged | 5,059,053 | May 15, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 3,629,298 | Aug 13, 2026 |
| WELLINGTON MANAGEMENT GROUP LLP | Increased | 3,599,644 | May 15, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 3,481,211 | May 15, 2026 |
| WELLINGTON MANAGEMENT GROUP LLP | Reduced | 3,416,781 | Aug 14, 2026 |
| UBS Group AG | Reduced | 3,399,221 | Aug 13, 2026 |
| STATE STREET CORP | Increased | 3,321,554 | Aug 7, 2026 |
| STATE STREET CORP | Reduced | 3,116,749 | May 15, 2026 |
| JANUS HENDERSON GROUP PLC | Increased | 2,891,527 | May 18, 2026 |
Insider activity from SEC Form 4; institutional positioning from 13F filings · Latest filing Aug 12, 2026