This article is relevant to you if:
You wish to delete a security as though it never existed on Pulley.
If you would rather simply 'cancel' a security (the difference being that there is a record on Pulley of the security's existence), go here.
First, go to the Cap table page located on the left navigation bar under Essentials → Cap Table.
Deleting individual securities
Select the certificate I.D. of the security you wish to edit (in the 'Certificate' column),
When viewing the security details select Actions → Delete.
Editing securities in bulk
Learn more about spreadsheet mode here.
Hit the green Actions button → Edit.
This will open the spreadsheet mode where you can delete securities directly.