Restricted Stock: How to Participate

1. Consult your company's insider trading/compliance officer about employee/insider trading policies and procedures.
    
2. Set up a William Blair & Company securities account.
    
3. Inform your William Blair & Company investment professional of your intent to sell restricted securities.
    
4. Discuss with your investment professional the terms of the sale, i.e., market order or limit order.
    
5. Fax a copy of your stock certificate to your investment professional.
    
6. Complete and return Form 144, an attestation letter, and a stock power along with stock certificate to your investment professional.
    
7. William Blair & Company personnel will seek the necessary approvals from your company's legal counsel.
    
8. Your shares will be sold and the proceeds deposited in your William Blair & Company securities account–where you can purchase securities, maintain a money market account, or request a check.