Insider Trading June 11, 2026 07:28 PM

Protagonist Therapeutics Director Executes Pre-Arranged Share Sale

William Waddill offloads 9,000 shares under 10b5-1 plan as stock nears 52-week high, with analysts maintaining bullish outlook on peptide platform and pipeline momentum.

By Sofia Navarro
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PTGX

Protagonist Therapeutics director William D. Waddill executed a $969,120 sale of 9,000 shares on June 10, 2026, following the exercise of fully vested stock options. The transaction, conducted under a pre-arranged 10b5-1 trading plan, reduces his direct holdings to 7,825 shares. The sale occurs as the stock trades near its 52-week high of $111.45, reflecting strong investor enthusiasm around the company’s $7 billion market capitalization. Analysts continue to highlight positive developments surrounding the company's peptide platform and commercial launch momentum.

Protagonist Therapeutics Director Executes Pre-Arranged Share Sale
PTGX
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Key Points

  • Director William D. Waddill executed a $969,120 sale of 9,000 shares under a pre-arranged 10b5-1 plan, reducing his direct holdings to 7,825 shares.
  • The sale coincides with the stock trading near its 52-week high of $111.45, following a 98% annual return and a $7 billion market capitalization.
  • Analysts maintain a bullish outlook, with multiple firms citing strong pipeline momentum, commercial launch progress, and validation of the peptide platform through Icotyde's approval.

William D. Waddill, serving as a director at Protagonist Therapeutics, Inc. (NASDAQ:PTGX), completed the sale of 9,000 shares of the company's common stock on June 10, 2026. The transaction was executed at a weighted average price of $107.68 per share, with the price per share varying between $107.02 and $108.00. The aggregate value of the sale reached approximately $969,120. This divestment takes place as the stock is trading close to its 52-week high of $111.45. The current trading level follows a significant 98% return over the preceding year. Market analysis indicates that the stock may be priced above its calculated fair value, with the $7 billion market capitalization suggesting considerable investor optimism regarding the company's prospects.

On the same day as the sale, Mr. Waddill exercised stock options to acquire 9,000 shares of common stock. The acquisition involved 3,000 shares purchased at $11.80 per share and an additional 6,000 shares bought at $16.54 per share. The total cost for these acquisitions was approximately $134,640. All stock options that were exercised were fully vested. Both the option exercises and the subsequent sale of shares were carried out under a pre-arranged 10b5-1 trading plan. Mr. Waddill initially adopted this trading plan on February 27, 2026. Following the completion of these transactions, Mr. Waddill directly holds 7,825 shares of Protagonist Therapeutics common stock.

Protagonist Therapeutics has recently been the subject of multiple analyst reports. Wolfe Research initiated coverage with an outperform rating, pointing to a promising early-stage pipeline and establishing a price target of $135. BMO Capital reiterated an outperform rating, citing momentum from commercial launches and potential regulatory approvals, with a price target of $112. Citizens increased its price target to $137, emphasizing the validation of the company's peptide platform through the approval of Icotyde for psoriasis. Johnson & Johnson, a partner in this development, views this approval as a significant opportunity. Jefferies maintained a buy rating with a $121 price target, supported by Johnson & Johnson's optimistic outlook on Icotyde's sales potential. Truist Securities also raised its price target to $121, citing positive feedback from Johnson & Johnson regarding the rapid market uptake of Icotyde. These analyst actions reflect a strong consensus on the company's growth prospects.

The company held $620 million in cash and equivalents as of March 31, 2026. This financial position supports an expected operational runway through 2028. The stock closed at 109.79, representing a change of +4.02 or +3.80%. The after-hours trading price was recorded at 109.79. Market data for PTGX is available through various financial platforms, which analyze the stock against thousands of other companies using numerous financial metrics to assess fundamentals, momentum, and valuation.

Risks

  • The stock may be overvalued relative to its fair value, as indicated by recent analysis, despite strong investor enthusiasm.
  • The company's operational runway extends only through 2028, creating a finite timeline for commercializing its pipeline and achieving profitability.
  • Reliance on partner Johnson & Johnson for the commercialization of Icotyde introduces dependency risks, despite positive feedback on market uptake.

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