Hi! I'd like to make this in a 9 in. springform pan. Would the measurements stay the same?

Hi Food52Onetime! This article is a handy way to adjust ingredients to any size pan: https://food52.com/blog/13239-how-to-make-your-baking-recipe-fit-your-pan-size. Since you're going down in size (by area), you'll want to reduce the ingredients by roughly 1.25x. It's probably easier to just prep according to the recipe and have some leftover.