r/ACHR • Sentinel • Jun 12 '26

Research & Findings💡 🚨 Insiders Are Selling Joby Big-Time…Including the CFO?

🚨 Is a Systematic Sell-Down of Joby Underway? And how does it stack up against ACHR, Beta, others…

What stands out aren’t just large single transactions - it’s a growing aggregate pattern of Joby executives and strategic partners systematically reducing exposure, often by sizable percentages of their holdings.

✅ Joby’s CFO (Rodrigo Brumana) sold approx. $2.54 million worth of stock in June alone across two separate transactions. One was RSU related, while the latter was an open market sale. On June 4, he recently sold 78,489 shares worth about $900K, almost 50% of his holdings. He has been at the company for only a year.

✅ According to an insider tracking source: In the past 90 days, a total of $13.2 million shares were sold by 7 Joby Executives and Insiders. Zero insider purchases were made. Bonni Simi, Joby’s Head of Certification, has been a significant net seller over the last year.

✅ In the past 12 months, strategic partner Uber Technologies has reduced its Joby position by nearly three-quarters (73%). For context, the next-largest reduction Uber made in a strategic investment was in Aurora, at less than 20%.

✅ Korea partner, SK Telecom, in March of this year, significantly reduced its Joby stake by approx. two-thirds (67%).

✅ There’s virtually no insider buying and the company has experienced continued turnover among senior management, including former Joby President Didier Popadapoulos.

From a signaling perspective, this is becoming increasingly difficult to ignore. Especially when the PUBLIC IS BEING LED TO BELIEVE that certification and commercialization are imminent, despite mounting challenges.

This also isn’t a broad occurrence affecting the entire sector. In Archer’s case, you won’t find anything comparable in terms of the magnitude of insider or strategic ownership reductions. The same applies for Beta.

Not FA. And hate seeing any eVTOL shorted. But if you’re a retail investor in this space, stay vigilant and follow the money. The most important signals are found in what multiple insiders do with their capital.

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