SQZ Biotech Announces Pricing of Initial Public Offering

SQZ Biotechnologies Company (NYSE: SQZ) (“SQZ”) today announced the pricing of its initial public offering of 4,411,765 shares of common stock at a public offering price of $16.00 per share. All of
the shares of common stock are being offered by SQZ. In addition, SQZ has granted the underwriters a 30-day option to purchase up to an additional 661,764 shares of its common stock at the initial