President of Blackbox.io Inc., 10%
Gust Kepler is a technology entrepreneur and executive who serves as Chief Executive Officer of Blackbox.io, Inc., a fintech subsidiary formed to continue the historic operations of Blackboxstocks Inc.[[4]](https://www.quiverquant.com/news/Blackboxstocks+Inc.+Announces+Merger+with+REalloys+Inc.,+Creating+a+Leader+in+North+America's+Rare+Earth+Magnet+Supply+Chain) He previously held the position of President and Chief Executive Officer of Blackboxstocks Inc. (NASDAQ:BLBX), where he demonstrated significant confidence in the company through substantial insider investments, acquiring 25,000 shares at $4.0 per share in July 2024 for a $100,000 investment.[[1]](https://www.investing.com/news/company-news/blackboxstocks-ceo-gust-kepler-buys-100k-in-company-stock-93CH-3505318) Kepler has been instrumental in strategic corporate development, including guiding Blackboxstocks through a transformative merger with REalloys Inc., announced in March 2025, which combined the company's fintech operations with REalloys' rare earth magnet supply chain business.[[4]](https://www.quiverquant.com/news/Blackboxstocks+Inc.+Announces+Merger+with+REalloys+Inc.,+Creating+a+Leader+in+North+America's+Rare+Earth+Magnet+Supply+Chain)[[5]](https://www.marketscreener.com/quote/stock/REALLOYS-INC-120795440/news/REalloys-Inc-entered-into-an-agreement-and-plan-of-merger-to-acquire-Blackboxstocks-Inc-from-Gust-49295587/) Following the merger completion, Kepler transitioned to lead Blackbox.io as a subsidiary while David Argyle assumed the CEO role of the combined entity.[[4]](https://www.quiverquant.com/news/Blackboxstocks+Inc.+Announces+Merger+with+REalloys+Inc.,+Creating+a+Leader+in+North+America's+Rare+Earth+Magnet+Supply+Chain)
As a 10% owner of the merged company (now operating under REalloys Inc.), Kepler maintains active involvement in the organization's strategic direction.[[3]](https://www.stocktitan.net/sec-filings/ALOY/form-4-realloys-inc-insider-trading-activity-6bffd3970bcb.html) His career reflects a focus on financial technology and supply chain innovation, with particular emphasis on securing North America's rare earth material supply chains and reducing dependence on foreign suppliers for defense-critical materials.[[4]](https://www.quiverquant.com/news/Blackboxstocks+Inc.+Announces+Merger+with+REalloys+Inc.,+Creating+a+Leader+in+North+America's+Rare+Earth+Magnet+Supply+Chain) Most recently, on March 16, 2026, Kepler reported significant stock sales of 71,000 shares of common stock at $11.0072 per share, reflecting his ongoing portfolio management activities within the combined entity.[[3]](https://www.stocktitan.net/sec-filings/ALOY/form-4-realloys-inc-insider-trading-activity-6bffd3970bcb.html)
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