JetBlue Airways Corporation (NASDAQ:JBLU) shares are trading lower Monday after the company announced a $400 million convertible senior notes offering. The Details: JetBlue said it also expects to grant the initial purchasers of the notes an option to purchase up to an additional $60 million aggregate principal amount of the notes. The company said it intends to use the net proceeds from the offering to repurchase a portion of their existing 0.50% senior convertible notes due 2026 with any remaining net proceeds to be used for general corporate purposes. Read Next: What’s Going On With Rocket …