Hello,
For - SEPM Latest Virus Definition Date
Try Monitors >> Logs
Set the Log Type to Scan and pick your time range, Click OK
For - SEPM Last time of scan reports
Try Monitors >> Logs
Set the Log Type to Computer Status and click Export
Check these Articles:
About Scan reports and logs
http://www.symantec.com/docs/TECH95545
About the different types of Symantec Endpoint Protection Manager Reports
http://www.symantec.com/docs/TECH95538
Viewing risks
http://www.symantec.com/docs/HOWTO55115
About Risk reports and logs
http://www.symantec.com/docs/TECH95543
Regards,