PTGX
Protagonist Therapeutics, Inc · Healthcare · Market cap $9.4B
Insiders sold $34.2M net in the last 90 days ·2 sellers, 0 buyers· 6 of 6 sales under Rule 10b5-1 plans· latest Form 4 filed Sep 11, 2026
Insider Buying
$0
reported purchases (SEC code P)
Insider Selling
$80.6M
reported sales (SEC code S)
Unique Insiders
7
in the rolling window
Latest filing
Sep 11, 2026
PATEL DINESH V PH D
Protagonist Therapeutics, Inc (PTGX) has 37 SEC Form 4 filings (83 transaction rows) in the rolling window, disclosed by 7 distinct insiders. Most recent filing: Sep 11, 2026.
Inside the rolling window, 7 insiders at Protagonist Therapeutics, Inc reported no open-market purchases and 32 open-market sales totaling $80.6M. The most active filer is President and CEO PATEL DINESH V PH D with 12 filings. Insiders have net sold $61.9M over the trailing 6 months. The most recent open-market filing is a sale of 54,174 shares by President and CEO PATEL DINESH V PH D, dated Sep 8, 2026, worth $7.9M.
- Industry:Biotechnology
- CEO:Dinesh V. Patel
- Employees:124
- HQ:Newark, CA, US
- IPO:2016-08-11
| Source | |||||||
|---|---|---|---|---|---|---|---|
| President and CEO | Sale | 54,174 | $7.9M | Sep 11 | — | SEC ↗ | |
| President and CEO | Sale | 63,548 | $9.3M | Sep 11 | — | SEC ↗ | |
| President and CEO | Sale | 7,278 | $1.0M | Sep 11 | — | SEC ↗ | |
| President and CEO | Sale | 65,761 | $9.8M | Aug 12 | -4.5% | SEC ↗ | |
| President and CEO | Sale | 34,239 | $5.1M | Aug 12 | -4.5% | SEC ↗ | |
| Director | Sale | 9,000 | $1.1M | Jun 25 | +18.4% | SEC ↗ | |
| Director | Sale | 9,000 | $969K | Jun 11 | +32.2% | SEC ↗ | |
Waddill William D.First in 4 months | Director | Sale | 9,000 | $897K | Jun 1 | +52.9% | SEC ↗ |
| President and CEO | Sale | 75,000 | $7.5M | May 15 | +42.1% | SEC ↗ | |
Giraudo BryanFirst filing | Director | Sale | 48,000 | $4.8M | May 12 | — | SEC ↗ |
Giraudo BryanFirst filing | Director | Sale | 11,130 | $1.1M | May 12 | — | SEC ↗ |
| Chief Financial Officer | Sale | 1,750 | $185K | Apr 21 | — | SEC ↗ | |
| Chief Financial Officer | Sale | 24,765 | $2.6M | Mar 27 | — | SEC ↗ | |
SELICK HAROLD EFirst filing | Director | Sale | 24,000 | $2.5M | Mar 27 | — | SEC ↗ |
| Chief Medical Officer | Sale | 15,000 | $1.6M | Mar 27 | — | SEC ↗ | |
| President and CEO | Sale | 59 | $6K | Mar 25 | — | SEC ↗ | |
| President and CEO | Sale | 54,641 | $5.5M | Mar 25 | — | SEC ↗ | |
Williams Lewis TFirst filing | Director | Sale | 18,000 | $1.5M | Feb 18 | — | SEC ↗ |
| Director | Sale | 20,000 | $1.7M | Feb 6 | — | SEC ↗ | |
| President and CEO | Sale | 19,315 | $1.6M | Jan 27 | — | SEC ↗ | |
| President and CEO | Sale | 24,890 | $2.1M | Jan 27 | — | SEC ↗ | |
| President and CEO | Sale | 4,068 | $338K | Jan 27 | — | SEC ↗ | |
| Chief Medical Officer | Sale | 13,151 | $1.1M | Jan 27 | — | SEC ↗ | |
| Chief Medical Officer | Sale | 5,000 | $411K | Jan 27 | — | SEC ↗ | |
| Chief Medical Officer | Sale | 5,000 | $410K | Jan 27 | — | SEC ↗ |
Frequently asked questions
How many SEC Form 4 insider filings does PTGX have?
Protagonist Therapeutics, Inc (PTGX) has 37 SEC Form 4 filings (83 transaction rows) in the rolling 365-day window, disclosed by 7 distinct insiders. Most recent filing: Sep 11, 2026.
When was the most recent SEC Form 4 filing for PTGX?
The most recent Form 4 filing for PTGX on Tracefour is dated Sep 11, 2026.
Who is the most active insider at PTGX?
The most active SEC Form 4 filer at PTGX in the rolling window is President and CEO PATEL DINESH V PH D, with 12 filings.
What is the net insider flow at PTGX over the last 6 months?
Over the trailing 180 days, insiders at PTGX have net sold $61.9M based on SEC Form 4 disclosures.
What is the total insider buy and sell value at PTGX in the current window?
Inside the rolling window, insiders at PTGX bought $0 and sold $80.6M based on SEC Form 4 filings.
Can I get alerts for PTGX insider trading?
Yes. Tracefour sends a free email when a new SEC Form 4 purchase or sale is filed at Protagonist Therapeutics, Inc (PTGX). Alerts are set per company from the page itself, there is no paid tier, and each email links to the original filing on SEC EDGAR.
Related companies
Protagonist Therapeutics, Inc is in the Healthcare sector.