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Investor FAQs

Where is Proteon's corporate headquarters?
 Proteon is headquartered at 200 West Street, Waltham, MA 02451. The main phone number is (781) 890-0102.
Where is the company incorporated?
 Proteon is incorporated in the state of Delaware.
When did Proteon go public? What was the price?
 Proteon’s initial public offering (IPO) occurred on October 22 and was at a price of $10 per share.
What is Proteon’s fiscal year end?
 December 31st
How is Proteon stock traded?
 Proteon is traded on the NASDAQ Global Market under the ticker symbol PRTO, and its CUSIP number is 74371L109.
Who is Proteon's transfer agent?
 Computershare Trust Company, N.A.
P.O. Box 505000
Louisville, KY 40233
877-373-6374 (from US, Canada and Puerto Rico)
781-575-3100 (non-US)
If my address changes, whom should I notify?
 You must send both your old and new address to our transfer agent, Computershare Trust Company, N.A., by U.S. mail. Each stockholder in question must sign the request for an address change.
Who is Proteon's independent auditor?
 Ernst & Young LLP
200 Clarendon Street
Boston, MA 02116
(617) 266-2000
Who is Proteon's legal counsel?
 Morgan Lewis
1 Federal Street
Boston, MA 02100
How can I view documents Proteon has filed with the Securities & Exchange Commission (SEC), including Forms 10-K and 10-Q?
 Proteon’s SEC filings can be viewed HERE or
Who should I contact if I have further questions?
 Proteon’s investor relations department is happy to answer any shareholder questions. You may contact Proteon’s investor relations by phone at 781-890-0102 x1026 or by e-mail at