BioAmber Inc (fka BIOAQ)

[1manband]

You don't have to do anything with your shares.

For the tax loss, a shareholder doesn't need to surrender ownership of the shares. No transaction needs to occur to establish the diminished value in a publicly traded security. It is fully documented that BIOAQ shares are worthless, so a shareholder can take the full tax loss and still own the shares.

For any shareholder that has their shares in certificate form, I suggest framing the certificate and hanging on a wall where they will see it everyday. It will serve as a reminder to LEARN HOW BANKRUPTCY WORKS and not make the same mistake again.