Score Choice and Superscoring?

I perused the entire website and couldn’t find anything about score choice and superscoring. Google searches say that Harvey Mudd doesn’t allow score choice for the SAT I, but what about subject tests? Are your SAT scores superscored?

When we asked whether we should just send 2 subject tests (their requirement) even though my son took three, they stated they wanted ALL of them. So I imagine they’d want all sittings of any test as well.