Despite all of these advantages, Klaviyo’s stock is down 41% so far this year. The shares have come under several sets of headwinds over the past several months, including ongoing worries that the stock may be overvalued. More recently, the company’s CEO, Andrew Bialecki, has been selling large blocks of shares over the past several weeks. One of his notable sales, on September 25, totaled more than $7.5 million worth of KVYO stock; during this month of October, he has sold two blocks worth a combined $8 mi ...