ferriematthew It doesn't look like it's officially supported as per the website but is it even possible to do that?
You can build GrapheneOS on a unsupported device but you will not get the official version of GrapheneOS and support. If you want the official version of GrapheneOS, you need a supported Google Pixel device.
GrapheneOS is currently working with an OEM to manufacture their own devices.
Please, get into the habit of browsing the official website more thoroughly and searching the forum rather than creating a discussion thread with a question that has been answered countless times.
https://grapheneos.org/faq#supported-devices
https://grapheneos.org/faq#recommended-devices
https://grapheneos.org/faq#future-devices