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Inventory turnover:

Days' sales in inventory:

Receivables turnover:

LIABILITIES AND STOCKHOLDERS' EQUITY CURRENT LIABILITIES December 31, (in millions, except per share data) 2018 2017 ASSETS CURRENT ASSETS EXHIBIT 4 Statement of Operations Other FInancial Data: OperatingmarginPre-taxmarginNetcashprovidedbyoperatingactivitiesNetcashusedininvestingactivitiesNetcashprovidedby(usedin)financingactivities3.8%2.9%$1,217(1,156)11314.2%13.0%$1,396(979)(553)19.1%17.7%$1,632(1,046)(472)19.0%17.1%$1,598(1,134)(487)8.9%10.7%$912(379)(417) Annual Report. JetBlue Airways Corporation, December 31, 2018. EXHIBIT 3 Jet Blue Operating Margin by Quarter-End