Navigate to https://www.semrush.com/projects/
Click on "Position Tracking"

Click on Brand

Click on "Rankings Distribution"

Click Date

Choose date range

Click on "Apply"

Click "Export"

Click on "CSV"

Open download and save as: BRAND (underscore) Ranking (underscore) YYYYMM.csv
File path: PFM Web/IT > Admin > KPI > Data Sources > SEMRush

Repeat for each brand!