- 1706 Year of foundation
- 1851 First paper machine
- 1882 Start-up of pulp production in Alfeld
- 1949 Acquisition of paper sack producer Sachsa GmbH
- 1965 Acquisition of paper converter Landré GmbH
- 1987 Acquisition of Schwäbische Zellstoff AG
- 1992 Integration into Sappi Group
- 1993 Disposal of Sachsa and Landré
- 1998 Integration into global Sappi Fine Paper Group and renaming into Sappi Alfeld AG
- 2004 Renaming into Sappi Alfeld GmbH
- 2006 300th anniversary
- 2013 Rebuild of PM2
- 2014 60th anniversary of PM1
- 2016 40th anniversary PM5