Mobile App
1 - When signed in, at the bottom, Go to (...) More.
2 - On the top left corner, tap Activity.
3 - At the top right, tap the Document icon
4 - Tap the green button Generate Report*
Web Wallet
1 - Go to Uphold and login
2 - At the left, click the 
icon for Activity
3 - In the left panel, at the top right, click the Document icon
4 - Click the green button Generate Report*
*A few minutes later you'll receive an email with the option to download your transaction history in csv format