Insider Trading June 22, 2026 09:16 PM

Kymera Therapeutics Director Bruce Booth Offloads $45.3M in Shares Amid Stock Surge

Director's recent divestment coincides with the biotech's strong annual performance and upcoming clinical milestones.

By Caleb Monroe
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KYMR

Bruce Booth, a director at Kymera Therapeutics, Inc. (NASDAQ:KYMR), executed a series of stock transactions totaling approximately $45.3 million between June 17 and June 22, 2026. The sales, which include both direct exercises of vested options and indirect sales through affiliated funds, were conducted under pre-established Rule 10b5-1 trading plans. This activity occurs as Kymera's stock trades near its 52-week high of $105, reflecting a significant 115% return over the past year. The transactions leave Booth with no direct holdings in the company, while his affiliated funds retain substantial indirect positions.

Kymera Therapeutics Director Bruce Booth Offloads $45.3M in Shares Amid Stock Surge
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Key Points

  • Director Bruce Booth executed a $45.3 million sale of Kymera shares through direct option exercises and indirect fund sales under Rule 10b5-1 plans, leaving him with no direct ownership.
  • Kymera's stock has surged 115% over the past year, trading near its 52-week high of $105, though some analyses suggest the stock may be overvalued at current levels.
  • The biotech sector sees continued momentum with Kymera receiving a $20 million milestone payment from Sanofi and presenting promising Phase 1 data for KT-621, alongside analyst upgrades reinforcing positive outlooks.

Bruce Booth, serving as a director at Kymera Therapeutics, Inc. (NASDAQ:KYMR), has formally disclosed a substantial reduction in his equity position through a recent Securities and Exchange Commission filing. The documentation outlines a sequence of transactions executed between June 17 and June 22, 2026, resulting in the disposition of common stock valued at approximately $45.3 million. This financial activity unfolds against a backdrop of robust market performance for Kymera, with the stock trading in close proximity to its 52-week peak of $105. At the time of reporting, the shares were priced at $99.45, marking a notable 115% appreciation over the preceding twelve months. Independent analysis from InvestingPro suggests that the current valuation may be stretched, placing Kymera among the entities identified on their list of most overvalued stocks.

On June 17, 2026, Mr. Booth initiated the transaction series by exercising vested options to acquire 11,741 shares of Kymera common stock. The exercise price was set at $20.00 per share, culminating in a total cost of $234,820. These options had reached full vesting status and were fully exercisable at the time. Immediately following the acquisition, Mr. Booth liquidated all 11,741 shares on the same day. The direct sales were executed at a weighted average price of $89.98 per share, with individual transaction prices ranging from $89.95 to $90.20. These specific sales were conducted under a Rule 10b5-1 trading plan that was established on December 16, 2025.

Concurrently, entities affiliated with Mr. Booth facilitated the indirect sale of an additional 548,804 shares of common stock between June 17 and June 22. These indirect transactions were managed by Atlas Venture Fund X, L.P. and Atlas Venture Opportunity Fund I, L.P., operating under a separate Rule 10b5-1 trading plan adopted on December 11, 2025. Mr. Booth has formally disclaimed beneficial ownership of these indirectly held securities, except to the extent of his pecuniary interest. The aggregate impact of all reported transactions involved the sale of 560,545 shares of Kymera Therapeutics common stock, generating a total value of $45,293,293. The prices realized across these sales varied from $89.98 to $102.48.

Following the completion of these transactions, Mr. Booth holds no direct shares of Kymera Therapeutics common stock. However, his affiliated entities maintain significant indirect positions. Atlas Venture Fund X, L.P. holds 3,490,653 shares, while Atlas Venture Opportunity Fund I, L.P. retains 617,663 shares. For comprehensive insights into Kymera's valuation and financial health, detailed Pro Research Reports are available through InvestingPro, covering over 1,400 US equities.

Separately, Kymera Therapeutics has announced several key developments. The company received a $20 million milestone payment from Sanofi following the dosing of the first participant in a Phase 1 trial for KT-485, an oral IRAK4 degrader. This trial is part of a collaborative effort focusing on adult healthy volunteers and patients with hidradenitis suppurativa. Additionally, Kymera presented Phase 1 data for KT-621 at the Japanese Dermatological Association Annual Meeting, highlighting rapid absorption, high levels of STAT6 degradation, and a favorable safety profile.

Analyst sentiment remains constructive. Truist Securities reiterated a Buy rating for Kymera, maintaining a price target of $116, citing AbbVie's acquisition of Apogee as a positive sector indicator. Brookline Capital Markets raised its price target to $97, referencing promising preclinical data for KT-579 in lupus models. Furthermore, Kymera appointed Penny Carlson as Senior Vice President of Development Operations, leveraging her 20+ years of experience to oversee global clinical development.

Risks

  • The reported divestment by a director, combined with analyst commentary on potential overvaluation, may signal internal concerns about the sustainability of the current stock price trajectory.
  • Reliance on milestone payments and clinical trial outcomes, such as the ongoing Phase 1 trial for KT-485, introduces execution risk and potential volatility if results do not meet expectations.
  • The biopharmaceutical sector faces inherent regulatory and development risks, as evidenced by the need for continued clinical advancements like the preclinical data for KT-579 to maintain analyst confidence.

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