Where is Aileron’s corporate headquarters?
Aileron’s headquarters are located at 281 Albany Street, Cambridge, MA 02139. The main office number is 617-995-0900.
On what stock exchange is Aileron traded, what is the stock ticker symbol and when did it go public?
Aileron’s stock is traded on the NASDAQ Global Market under the symbol ALRN. Our initial public offering was on June 29th, 2017.
When does Aileron’s fiscal year end?
Our fiscal year ends on December 31.
Who are the company’s independent auditors and legal counsel?

Our independent auditor is:

PriceWaterhouseCoopers
101 Seaport Blvd
Boston, MA 02210
(617) 530-5000

Our legal counsel is:
WilmerHale
60 State Street
Boston, MA 02109
(617) 526-6000

Does Aileron have a direct stock purchase plan?
Aileron does not have a direct stock purchase plan. Our common stock can be purchased through a stockbroker of your choice.
What is Aileron’s CUSIP number?
00887A 105
Who is Aileron’s transfer agent?
Computershare Trust Company, Inc.
250 Royall Street
Canton, MA 02021
www.computershare.com
US Phone: +1 800 962 4284 Call: +1 800 962 4284
International Phone: +1 781 575 3120
How can I replace my lost stock certificates?
If you have misplaced your stock certificates, please contact Aileron’s transfer agent, Computershare Trust Company, Inc.
250 Royall Street
Canton, MA 02021
www.computershare.com
US Phone: +1 800 962 4284 Call: +1 800 962 4284
International Phone: +1 781 575 3120

There may be a fee involved for replacing lost stock certificates.
If my address changes, whom should I notify?
If your address has changed, please contact our transfer agent:
Computershare Trust Company, Inc.
250 Royall Street
Canton, MA 02021
www.computershare.com US Phone: +1 800 962 4284 Call: +1 800 962 4284
International Phone: +1 781 575 3120