DigitalJan Koum Transfers Facebook Shares Between TrustsWhatsApp co-founder and CEO and Facebook director Jan Koum reported in a Form 4 filing Tuesday with the Securities and Exchange Commission that he transferred shares of Facebook class-A common stock between trusts he administers.By David Cohen|November 26, 2014ShareBy David Cohen|November 26, 2014ShareWhatsApp co-founder and CEO and Facebook director Jan Koum reported in a Form 4 filing Tuesday with the Securities and Exchange Commission that he transferred shares of Facebook class-A common stock between trusts he administers.Koum moved 3,676,384 class-A shares from Jan Koum Trust I to Butterfly Trust.Jan Koum Trust I now holds 141,489 shares, while Butterfly Trust holds 61,080,227. Adweek Adweek