On April 4, he bought 20,000 shares of common stock for $12.65 each and sold them the same day for $65. He repeated the transaction on April 9 and 11.
The April transactions follows a sale of 1,500 shares worth $86,800 in January.
According to the form, Growcock still owns 163,000 shares, plus 4,100 in a retirement account.
Officers, directors and major stakeholders in a public company are required by law to file the SEC Form 4 when they change their shareholding.