Dimon is setting up the trades through a predetermined plan that executives at publicly traded companies use to protect against insider trading accusations. It will mark the first time that the 67-year-old CEO has offloaded shares of JPMorgan for nontechnical reasons, such as exercising options. The planned sales — amounting to roughly 12% of the JPMorgan stock owned by Dimon and his family — are being done for tax planning and personal wealth diversification reasons, the bank said. Both are common reasons for executives to sell stock in their firms. The bank also said Dimon continues to believe JPMorgan's prospects are "very strong," and his planned trades are not related in any way to succession. Such sales are often seen when CEOs get close to retirement. As you can see, making sense of insider transactions can sometimes be a tall task.