It isn't clear what you want to achieve.

If you want a list of arrays, then use

my $lol = $sth_m->fetchall_arrayref()
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. If you want a list of hashes, then use

my $loh = $sth_m->fetchall_arrayref({});
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(notice the empty hash ref passed as an argument).

In both cases, you get an array ref containing either hashes or arrays,a nd you can loop through the results.

Have a look at DBI Recipes for some more examples and explanations.

As a side note, you are using $results->{'company'}, but there is no 'company' column in your query.