Yes, you can do this using jQuery.
Add this to your PAGE HEADER CODE INJECTION— in the settings on your main product page.
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
<script>
window.Squarespace.onInitialize(Y, function(){
$('section.ProductItem-additional').appendTo('.ProductItem-details-share');
});
</script>
Notes:
1. this assumes you're not running jQuery on the site; if you are, you can just use the second script.
2. The template I'm using is MOJAVE in the Brine Family (7.0), although this should work for most 7.0 templates.
3. You have to make sure that SOCIAL SHARING is turned on in the Design Styling area— as that's the container I'm using to hold the additional content. It's a little hacky, but it was the easiest way to make it happen.