 Aileron Therapeutics ALRN announced today the closing of its underwritten public offering of its common stock, including the exercise by the underwriter of their option to purchase an additional 1,071,149 shares at the public offering price of 1.10 per share. The exercise of the option to purchase additional shares brought the total number of shares of common stock sold by Aileron to 10,162,059 shares and increased the amount of gross proceeds to 11.2 million, before deducting underwriting discounts and commissions and offering expenses payable by Aileron. This offering was made only by means of a prospectus and prospectus supplement that form a part of the registration statement. 