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PTGX
NASDAQ Life Sciences

Protagonist Therapeutics CFO Sells $2.58M in Stock

Arie Shkolnikov · Analysis by Wiseek AI
More coverage: Biotech Stocks · Healthcare
Sentiment info
Negative
Importance info
7
Price
$100.11
Mkt Cap
$6.315B
52W Low
$39.6
52W High
$105.69
52W Position info
153% above low
Off High info
5.3% below high
Rel. Volume info
1.0× avg
Market data snapshot near publication time

PTGX has more than doubled off its 52-week low of $39.6.

Summary

Protagonist Therapeutics' Chief Financial Officer, Ali Asif, sold over $2.5 million worth of company stock following an option exercise, continuing a trend of insider sales.


Key Events · Ownership and Investor Activity · PTGX

  • CFO Sells Shares

    Chief Financial Officer Ali Asif sold 24,765 shares of common stock for approximately $2.58 million at an average price of $104.24 per share.

  • Option Exercise Preceded Sale

    The sale followed the exercise of options to acquire 24,765 shares at strike prices ranging from $12.17 to $19.19, totaling $438,280.

  • Continues Insider Selling Trend

    This transaction adds to a pattern of insider distribution, with over $18 million in net insider sales reported over the last 90 days, including recent Form 144 filings from other executives.


Analysis · PTGX · Life Sciences

This Form 4 filing indicates a significant open market sale by Protagonist Therapeutics' Chief Financial Officer, Ali Asif, totaling approximately $2.58 million. The sale occurred after exercising options. While the percentage of market cap is small for this large company, the absolute dollar value is substantial for an individual executive. This transaction contributes to a broader pattern of insider distribution observed over the past 90 days, with net insider sales exceeding $18 million. Such sales by a key executive can be interpreted by investors as a lack of conviction in the company's near-term stock performance, despite the company's recent clinical pipeline progress mentioned in its last 10-K.

At the time of this filing, PTGX was trading at $100.11 on NASDAQ in the Life Sciences sector, with a market capitalization of approximately $6.3B. The 52-week trading range was $39.60 to $105.69. This filing was assessed with negative market sentiment and an importance score of 7 out of 10.

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PTGX - Latest Insights

PTGX
Jun 18, 2026, 4:30 PM EDT
Filing Type: 8-K
Importance Score:
7
Price at Filing: $112.86
Real-time Price: $136.84 info
Change: +$23.98 (+21%) info
Market Cap: $8.8B info
PTGX
May 12, 2026, 7:28 PM EDT
Filing Type: 4
Importance Score:
7
Price at Filing: $99.95
Real-time Price: $136.84 info
Change: +$36.89 (+37%) info
Market Cap: $8.8B info
PTGX
May 11, 2026, 8:25 PM EDT
Filing Type: 4
Importance Score:
8
Price at Filing: $103.50
Real-time Price: $136.84 info
Change: +$33.34 (+32%) info
Market Cap: $8.8B info
PTGX
May 05, 2026, 4:28 PM EDT
Source: Reuters
Importance Score:
9
Price at Filing: $99.21
Real-time Price: $136.84 info
Change: +$37.63 (+38%) info
Market Cap: $8.8B info
PTGX
May 05, 2026, 4:27 PM EDT
Filing Type: 10-Q
Importance Score:
9
Price at Filing: $108.00
Real-time Price: $136.84 info
Change: +$28.84 (+27%) info
Market Cap: $8.8B info