Aileron’s headquarters are located at 285 Summer Street, Suite 101 Boston, MA 02210. The main office number is 617-995-0900.

Aileron’s stock is traded on the NASDAQ Capital Market under the symbol ALRN. Our initial public offering was on June 29th, 2017.

Our fiscal year ends on December 31.

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

Aileron does not have a direct stock purchase plan. Our common stock can be purchased through a stockbroker of your choice.

00887A 105

Computershare Trust Company, Inc.
250 Royall Street
Canton, MA 02021
www.computershare.com
US Phone: +1 800 962 4284 
International Phone: +1 781 575 3120

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 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