> how do you interpret this part? what is an example of somebody who would be an unsecured debtholder? as in somebody with a stake in SVB the buisness?

Bondholders, not just shareholders.

The implication is that every security here is wiped out: https://ir.svb.com/shareholder-and-bondholder-information/of...

Yeah it's an investor who invested in a debt instrument offered by the bank. So CD holders will be made whole but holders of any corporate bonds won't.

Yeah, someone who bought SVB's corporate bonds.