The feedback item for support of macros can be found on this link: https://feedback.telerik.com/Project/184/Feedback/Details/225821-spreadprocessing-implement-support-of-macro-enabled-workbooks-xlsm 

Hi Ian,

You could import .xlsm documents in RadSpreadProcessing using a custom format provider. I am attaching a sample implementation to this reply, which demonstrates how this could be achieved. Please, note that the supported content of the XLSM documents will be imported but the macros will be skipped. 

The supported formats, as well as guidelines for working with format providers, are available in the Formats and Conversion section from our documentation: http://docs.telerik.com/devtools/wpf/controls/radspreadprocessing/formats-and-conversion/general-information.html

If you have any additional questions on this implementation, it is best to contact us through our support system: http://www.telerik.com/account/support-tickets/available-support-list.aspx

I am closing this request. If you have any comments or concerns, please let me know.

Regards,
Tanya