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Robert Ainscow, Interim CEO and COO of ASP Isotopes Inc. (NASDAQ:ASPI), a company with a market capitalization of $1.16 billion, sold 22,500 shares of common stock on October 14, 2025, according to a Form 4 filing with the Securities and Exchange Commission. The transaction comes as ASPI shows significant momentum, with the stock up 173% over the past year.
The shares were sold at a weighted average price of $13.599, for a total value of $305,977. The prices for the shares sold ranged from $12.31 to $14.46. This sale was executed under a pre-arranged Rule 10b5-1 trading plan to cover tax obligations related to the vesting of restricted stock awards. Following the transaction, Ainscow directly owns 1,647,193 shares of ASP Isotopes Inc. According to InvestingPro analysis, ASPI is currently trading near its Fair Value, with the stock showing high volatility and maintaining strong price momentum with an 89% gain over the past six months. For comprehensive insider trading analysis and 15+ additional ProTips, explore the full ASPI research report on InvestingPro.
In other recent news, ASP Isotopes Inc. has commenced an underwritten public offering of its common stock shares, with Cantor and Lucid Capital Markets acting as joint book-running managers. The company has not disclosed the size or terms of this offering. In a notable organizational change, Paul Mann, the founder and CEO, has taken a temporary leave of absence for health reasons, with Robert Ainscow stepping in as the Interim CEO. Meanwhile, ASP Isotopes has gained control of Skyline Builders Group through its subsidiary, Quantum Leap Energy LLC, acquiring significant voting power via Class B shares. Additionally, ASP Isotopes expanded its board of directors to seven members, appointing Ralph L. Hunter as a Class II director and to the board of managers of its subsidiary, Quantum Leap Energy LLC. These developments highlight the company’s strategic activities and leadership adjustments.
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