Is it possible to grab the key & label of the optgroup for a selected option?

[end-user]

I have a react-select component that I'm populating with grouped options and I'm using Formik's provided handlechange method, which works great. As it says in the documenation, it's only updating the values[key] for the selected option - is there anyway to make that value an object that also contains the optgroup's key or label?