Attached files
file | filename |
---|---|
EX-31.1 - EX-31.1 - HEARTLAND EXPRESS INC | exhibit3112021q2.htm |
EX-32.2 - EX-32.2 - HEARTLAND EXPRESS INC | exhibit3222021q2.htm |
EX-32.1 - EX-32.1 - HEARTLAND EXPRESS INC | exhibit3212021q2.htm |
EX-31.2 - EX-31.2 - HEARTLAND EXPRESS INC | exhibit3122021q2.htm |
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