Capital Loss for Shares of a Bankrupted Company

I hold shares in a US company that has gone bankrupt, and the stock has become a CUSIP, making it non-tradable. As a result, I have incurred a loss of hundreds of US dollars. I requested my broker to dispose of the shares, but they informed me that they cannot provide a written confirmation of the disposal. They advised that I would need to self-report this loss in my tax return to claim a capital loss. Could you please confirm if this approach is acceptable?

Hi ,
 

Please have a look at the guidance on negligible value claims at : Negligible value claims and agreements  .  You claim NV either by writing to HMRC or by entering neglibile value on your tax return .  Supporting evidence is required . Thank you .

Thank you for your response. The referenced page is about stocks listed on the London Stock Exchange. In my case, the stock used to be listed on the New York Stock Exchange and was delisted early this year. Could you please let me knwo what supporting evidence is needed in this case to claim capital loss in my tax return? Alternatively, could you provide an email address or phone number for me to contact?

Hi
You would probably show your acquisition cost of the shares, the cost of acquiring them.Details of the bankruptsy that make the shares worthless, so that you can work out how much was lost and how much is claimed as a loss in your tax return.