Skip to main content

Protagonist Therapeutics, Inc

PTGX
Exchange
Nasdaq
Industry
Pharmaceutical Preparations
SEC CIK
0001377121

In the last 90 days, Protagonist Therapeutics, Inc insiders filed 0 open-market purchases and 2 sales; 346 institutions reported holding it in 13F filings for Q2 2026, worth $9.30B in total; Duquesne Family Office is the only superinvestor holding it.

Open-market trades, last 90 days

Open-market purchases (P) and sales (S) by Protagonist Therapeutics, Inc insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.

Open-market buys
0 filings
Open-market sells
2 filings
1 insider, $33.1M in total
Insiders trading
1
Net value
−$33.1M
Purchases minus sales

Insider roster

Directors, officers and 10% owners who have filed a Form 4 for Protagonist Therapeutics, Inc, current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.

Insider roster for Protagonist Therapeutics, Inc
NameTitleLast reported holdingLast filingFilings, past year
Patel Dinesh V PH DPresident and CEO522,968Sep 10, 202610
Waddill William D.Director7,825Jun 25, 20266
Giraudo BryanDirector12,695May 11, 20262
Ali AsifChief Financial Officer59,003Apr 21, 20265
Selick Harold EDirector60,845Mar 27, 20263
Molina Arturo MDChief Medical Officer84,115Mar 27, 20265
Williams Lewis TDirector7,825Feb 18, 20262
O'Dowd Sarah ADirector7,825Jan 6, 20261
Gupta SuneelChief Development Officer267,433Nov 27, 20240
Swisher Daniel N JRDirector–Oct 30, 20230
Noonberg Sarah B.Director–Jan 18, 20230
Liu David YChief R&D Strategy Officer167,590Nov 17, 20220
Kalkofen Donald A.Chief Financial Officer18,521Feb 17, 20220

Insider trades

Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Aug 19, 2021 (view filing)Aug 172 daysLiu David YChief Scientific OfficerSSale−14.8K$47.56−$702.9K−20.2%58.3K after
Dec 23, 2021 (view filing)Dec 212 daysPatel Dinesh V PH DPresident and CEOSSale−15.0K$32.14−$482.1K−3.0%477.2K after
Dec 15, 2023 (view filing)Dec 132 daysPatel Dinesh V PH DPresident and CEOSSale−75.0K$20.08−$1.51M−12.3%534.3K after10b5-1
Jan 4, 2024 (view filing)Nov 15, 202350 daysLateMolina Arturo MDChief Medical OfficerSSale−1.85K$16.24−$30.0K−7.6%22.5K after
Jan 11, 2024 (view filing)Jan 92 daysGupta SuneelChief Development OfficerSSale−5.00K$25.00−$125.0K−2.6%187.6K after10b5-1
Mar 1, 2024 (view filing)Feb 29-Mar 11 dayAli AsifChief Financial OfficerSSale−24.2K$31.60−$764.4K−38.6%38.4K after4 lots
Mar 1, 2024 (view filing)Mar 1Same dayWaddill William D.DirectorSSale−13.0K$31.34−$406.6K−52.0%12.0K after10b5-1
Mar 1, 2024 (view filing)Mar 1Same dayPatel Dinesh V PH DPresident and CEOSSale−30.0K$31.62−$948.6K−5.0%574.6K after10b5-1
Apr 2, 2024 (view filing)Apr 11 dayPatel Dinesh V PH DPresident and CEOSSale−25.0K$28.31−$707.8K−4.4%549.6K after10b5-1
Apr 19, 2024 (view filing)Apr 181 dayAli AsifChief Financial OfficerSSale−1.23K$25.11−$31.0K−3.2%37.2K after
Jun 11, 2024 (view filing)Jun 74 daysPatel Dinesh V PH DPresident and CEOSSale−35.0K$35.19−$1.23M−6.4%515.4K after10b5-1
Jun 11, 2024 (view filing)Jun 74 daysWaddill William D.DirectorSSale−8.00K$35.00−$280.0K−40.0%12.0K after10b5-1
Jul 26, 2024 (view filing)Jul 242 daysWaddill William D.DirectorSSale−8.00K$40.00−$320.0K−40.0%12.0K after10b5-1
Sep 12, 2024 (view filing)Sep 102 daysWaddill William D.DirectorSSale−8.00K$45.00−$360.0K−40.0%12.0K after10b5-1
Sep 13, 2024 (view filing)Sep 112 daysAli AsifChief Financial OfficerSSale−14.2K$44.49−$631.9K−28.9%35.0K after2 lots
Nov 19, 2024 (view filing)Nov 154 daysMolina Arturo MDChief Medical OfficerSSale−1.91K$40.98−$78.1K−3.9%46.4K after
Nov 27, 2024 (view filing)Nov 25-262 daysPatel Dinesh V PH DPresident and CEOSSale−100.0K$46.81−$4.68M−19.7%408.5K after2 lots
Nov 27, 2024 (view filing)Nov 25-262 daysGupta SuneelChief Development OfficerSSale−122.6K$45.96−$5.64M−31.5%267.0K after2 lots
Nov 27, 2024 (view filing)Nov 26-271 dayMolina Arturo MDChief Medical OfficerSSale−31.5K$44.86−$1.41M−40.4%46.4K after3 lots
Jan 17, 2025 (view filing)Jan 161 dayAli AsifChief Financial OfficerSSale−3.92K$0.00$0−5.9%62.8K after2 lots
Jan 17, 2025 (view filing)Jan 161 dayMolina Arturo MDChief Medical OfficerSSale−3.64K$0.00$0−4.2%83.9K after2 lots
Feb 20, 2025 (view filing)Feb 191 dayPatel Dinesh V PH DPresident and CEOSSale−5.36K$38.18−$204.6K−1.0%540.3K after
Mar 14, 2025 (view filing)Mar 122 daysAli AsifChief Financial OfficerSSale−24.9K$58.73−$1.46M−28.4%62.8K after
Mar 14, 2025 (view filing)Mar 131 dayMolina Arturo MDChief Medical OfficerSSale−30.5K$55.74−$1.70M−26.7%83.9K after
Mar 19, 2025 (view filing)Mar 172 daysWaddill William D.DirectorSSale−4.00K$54.25−$217.0K−23.4%13.1K after10b5-1
Apr 23, 2025 (view filing)Apr 221 dayAli AsifChief Financial OfficerSSale−1.76K$46.00−$80.8K−2.8%61.1K after
Jun 11, 2025 (view filing)Jun 9-102 daysMolina Arturo MDChief Medical OfficerSSale−20.0K$56.27−$1.13M−19.3%83.9K after2 lots
Jul 23, 2025 (view filing)Jul 21-232 daysPatel Dinesh V PH DPresident and CEOSSale−52.4K$54.92−$2.88M−9.0%531.0K after3 lots
Jul 28, 2025 (view filing)Jul 253 daysPatel Dinesh V PH DPresident and CEOSSale−10.4K$54.78−$570.5K−2.0%520.6K after
Aug 29, 2025 (view filing)Aug 272 daysWaddill William D.DirectorSSale−4.00K$59.25−$237.0K−30.5%9.13K after10b5-1
Sep 24, 2025 (view filing)Sep 222 daysWaddill William D.DirectorSSale−4.00K$64.25−$257.0K−43.8%5.13K after10b5-1
Oct 14, 2025 (view filing)Oct 104 daysWaddill William D.DirectorSSale−12.0K$81.62−$979.5K−70.1%5.13K after2 lots10b5-1
Nov 19, 2025 (view filing)Nov 172 daysMolina Arturo MDChief Medical OfficerSSale−2.71K$84.77−$229.9K−3.2%81.2K after
Jan 21, 2026 (view filing)Jan 201 dayAli AsifChief Financial OfficerSSale−8.59K$82.48−$708.3K−9.9%78.1K after
Jan 21, 2026 (view filing)Jan 201 dayPatel Dinesh V PH DPresident and CEOSSale−34.4K$82.48−$2.84M−5.6%580.5K after
Jan 21, 2026 (view filing)Jan 201 dayMolina Arturo MDChief Medical OfficerSSale−9.51K$82.48−$784.7K−8.9%97.3K after
Jan 27, 2026 (view filing)Jan 23-274 daysMolina Arturo MDChief Medical OfficerSSale−23.2K$82.30−$1.91M−21.6%84.1K after3 lots
Jan 27, 2026 (view filing)Jan 27Same dayAli AsifChief Financial OfficerSSale−46.2K$83.13−$3.84M−43.4%60.3K after2 lots
Jan 27, 2026 (view filing)Jan 23-274 daysPatel Dinesh V PH DPresident and CEOSSale−48.3K$84.18−$4.06M−7.8%574.5K after4 lots
Feb 6, 2026 (view filing)Feb 6Same dayWaddill William D.DirectorSSale−20.0K$83.68−$1.67M−71.9%7.83K after
Feb 18, 2026 (view filing)Feb 171 dayWilliams Lewis TDirectorSSale−18.0K$82.42−$1.48M−69.7%7.83K after
Mar 25, 2026 (view filing)Mar 24-251 dayPatel Dinesh V PH DPresident and CEOSSale−54.7K$101.00−$5.52M−9.4%524.9K after2 lots
Mar 27, 2026 (view filing)Mar 261 dayAli AsifChief Financial OfficerSSale−24.8K$104.24−$2.58M−29.0%60.8K after
Mar 27, 2026 (view filing)Mar 261 daySelick Harold EDirectorSSale−24.0K$105.00−$2.52M−28.3%60.8K after
Mar 27, 2026 (view filing)Mar 261 dayMolina Arturo MDChief Medical OfficerSSale−15.0K$104.79−$1.57M−15.1%84.1K after
Apr 21, 2026 (view filing)Apr 201 dayAli AsifChief Financial OfficerSSale−1.75K$105.47−$184.6K−2.9%59.0K after
May 11, 2026 (view filing)May 7-84 daysGiraudo BryanDirectorSSale−41.1K$100.12−$4.12M−76.4%12.7K after2 lots
May 11, 2026 (view filing)May 7-84 daysGiraudo BryanDirectorSSale−18.0K$100.05−$1.80M−100.0%0 after2 lots
May 14, 2026 (view filing)May 122 daysPatel Dinesh V PH DPresident and CEOSSale−75.0K$100.12−$7.51M−12.5%523.5K afterAmended10b5-1
Jun 1, 2026 (view filing)May 293 daysWaddill William D.DirectorSSale−9.00K$99.64−$896.8K−53.5%7.83K after10b5-1