Power of Attorney: share sale

Power of attorney for a selling shareholder to appoint the buyer as the seller’s attorney pending registration of the share transfer.

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When do I use this document?

  • as a document to be delivered by a seller at closing of a Share Purchase Agreement
  • when stamp duty is payable on the share transfer
  • to enable the buyer to vote and exercise other share rights pending the registration of the share transfer

What are the key features?

    • suitable for an individual or corporate seller
    • appointment of the buyer as the seller’s attorney
    • grant of authority to the buyer to exercise all rights as the legal owner of the sale shares
    • irrevocable appointment given by way of security

What else do I need to know?

Following the closing of a share sale transaction, the seller will remain the registered owner of the shares which have been sold until the buyer has paid the necessary stamp duty.  This process can take a number of weeks.  The transfer of the sale shares cannot be registered in the register of members of the target company until the stamp duty has been paid.  

The buyer will want to be able to exercise all the rights as the owner of the sale shares notwithstanding that the seller remains the registered legal owner of the sale shares.  To enable the buyer to do this, the buyer will usually require that the seller grants a power of attorney in favour of the buyer which enables the buyer to exercise the legal rights of ownership of the sale shares.

If a share transfer involves consideration exceeding £1,000, stamp duty will be payable to HMRC and HMRC will need to confirm that the stamp duty has been paid.  This stamping process typically takes a few weeks and involves payment of the stamp duty and submission of the stock transfer by email to HMRC for HMRC to confirm the payment.

When do I use this document?

  • for a share sale transaction
  • where confidential information about the target company will be disclosed to a potential buyer
  • for a longer form NDA with strong legal protections for the seller and target company

What are the key features?

  • 17 clauses over 9 pages
  • definitions of Confidential Information and Proposed Transaction
  • confidentiality obligations
  • authorised recipients of Confidential Information 
  • circumstances permitting compulsory disclosure 
  • procedure for returning Confidential Information to the seller 
  • prohibition on the buyer poaching the target company’s employees
  • contractual remedies for breach of the NDA, including contractual indemnity in favour of the seller and target company
  • duration of agreement

What else do I need to know?

It’s quite common that some clauses of an NDA may be resisted by the receiving party. The guidance notes which accompany this document explain how provisions, such as the following, might be negotiated to reach mutual agreement.

    • non-solicitation covenants
    • a contractual indemnity for breach of the confidentiality obligations
    • the duration of the agreement

The guidance notes which accompany the document explain how these provisions might be negotiated to reach agreement.

What other docs are available?

For a shorter form of confidentiality agreement for a company sale transaction, see

Explanatory Guides

As with all of our document templates, your purchase will include access to clear explanatory guidance on the document and its use.

Updated by a lawyer on 27/06/2025

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