wp user column

I have created a custom field (code below). How can I show this column in my users.php file and then make it sortable?

Thanks

add_action( ‘show_user_profile’, ‘my_show_extra_profile_fields’ );
add_action( ‘edit_user_profile’, ‘my_show_extra_profile_fields’ );

function my_show_extra_profile_fields( $user ) { ?>

<h3>Extra profile information</h3>

<table class=”form-table”>

<tr>
<th><label for=”company”>Company Name</label></th>

<td>
<input type=”text” name=”company” id=”company” value=”<?php echo esc_attr( get_the_author_meta( ‘company’, $user->ID ) ); ?>” class=”regular-text” />
<span class=”description”>Please enter your company name.</span>
</td>
</tr>

</table>