WordPress Redirect / Add_Rewrite_Rule – Non Index.php Page
If company is the page slug try ‘index.php?pagename=company&code=$matches[1]’ If you want it in .htaccess to intercept it before it goes to index.php try ‘index.php?pagename=company&code=$1’ If company is a folder, there should be an index.php (or whatever the default file name is for your server) inside it that will process code.