<SEC-DOCUMENT>0000052388-18-000050-index.html : 20180302 <SEC-HEADER>0000052388-18-000050.hdr.sgml : 20180302 <ACCEPTANCE-DATETIME>20180302113012 ACCESSION NUMBER: 0000052388-18-000050 CONFORMED SUBMISSION TYPE: SC 13G/A PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20180302 DATE AS OF CHANGE: 20180302 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: HEARTLAND EXPRESS INC CENTRAL INDEX KEY: 0000799233 STANDARD INDUSTRIAL CLASSIFICATION: TRUCKING (NO LOCAL) [4213] IRS NUMBER: 930926999 STATE OF INCORPORATION: NV FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G/A SEC ACT: 1934 Act SEC FILE NUMBER: 005-39197 FILM NUMBER: 18660513 BUSINESS ADDRESS: STREET 1: 901 NORTH KANSAS AVENUE CITY: NORTH LIBERTY STATE: IA ZIP: 52317 BUSINESS PHONE: 3196263600 MAIL ADDRESS: STREET 1: 901 NORTH KANSAS AVENUE CITY: NORTH LIBERTY STATE: IA ZIP: 52317 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: AMERICAN CENTURY INVESTMENT MANAGEMENT INC CENTRAL INDEX KEY: 0000052388 STANDARD INDUSTRIAL CLASSIFICATION: UNKNOWN SIC - 0000 [0000] IRS NUMBER: 440640487 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G/A BUSINESS ADDRESS: STREET 1: 4500 MAIN STREET CITY: KANSAS CITY STATE: MO ZIP: 64111 BUSINESS PHONE: 816-531-5575 MAIL ADDRESS: STREET 1: 4500 MAIN STREET CITY: KANSAS CITY STATE: MO ZIP: 64111 FORMER COMPANY: FORMER CONFORMED NAME: INVESTORS RESEARCH CORP DATE OF NAME CHANGE: 19920929 </SEC-HEADER> <DOCUMENT> <TYPE>SC 13G/A <SEQUENCE>1 <FILENAME>heartlandexpress13g-a4.htm <DESCRIPTION>SC 13G/A <TEXT> Document 1 - file: heartlandexpress13g-a4.htm
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