PTSI p.a.m. transportation services, inc. NASDAQ Trucking Freight/Courier Services PANL pangaea logistics solutions ltd. NASDAQ Marine Transportation PXS pyxis tankers inc. NASDAQ Marine Transportation RLGT radiant logistics, inc. AMEX Oil Refining/Marketing RRTS roadrunner trans sys inc NYSE Oil Refining/Marketing RYAAY ryanair holdings plc - american depositary shares, each representing five ordinary shares NASDAQ Air Freight/Delivery Services SB safe bulkers, inc ($0.001 par value) NYSE Marine Transportation SAIA saia, inc. NASDAQ Trucking Freight/Courier Services SNDR schneider national, inc. NYSE Trucking Freight/Courier Services STNG scorpio tankers inc. common shares NYSE Marine Transportation SHIP seanergy maritime holdings corp NASDAQ Marine Transportation SFL sfl corporation ltd NYSE Marine Transportation SKYW skywest, inc. NASDAQ Air Freight/Delivery Services LUV southwest airlines company NYSE Air Freight/Delivery Services SAVE spirit airlines, inc. NASDAQ Air Freight/Delivery Services SBLK star bulk carriers corp. - common shares NASDAQ Marine Transportation GASS stealthgas, inc. - common stock NASDAQ Marine Transportation TK teekay corporation ltd. NYSE Marine Transportation TOPS top ships, inc. NASDAQ Marine Transportation TNP tsakos energy navigation ltd common shares NYSE Marine Transportation UNP union pacific corporation NYSE Railroads UAL united airlines holdings, inc. NYSE Air Freight/Delivery Services UPS united parcel service, inc. NYSE Trucking Freight/Courier Services ULH universal logistics holdings, inc. NASDAQ Trucking Freight/Courier Services USDP usd partners lp NYSE Railroads WERN werner enterprises, inc. NASDAQ Trucking Freight/Courier Services ZTO zto express (cayman) inc. american depositary shares, each representing one class a ordinary share. NYSE Trucking Freight/Courier Services