CEO Vininder Singh Sells Significant Stake Amid Bullfrog AI Downturn Bullfrog AI Holdings CEO Vininder Singh sold over 44,000 shares in early April, totaling $66,407, as the stock hovered near its 52-week low. The sales, executed under a preset plan, leave Singh with approximately 2.3 million shares. The move comes as the company faces ongoing market and valuation challenges.12