Everbridge Closes Initial Public Offering

Burlington, Mass. – Sept. 21, 2016 – Everbridge, Inc. (NASDAQ: EVBG), a global software company that provides critical communications and enterprise safety applications to help keep people safe and businesses running, today announced the closing of its initial public offering of 8,625,000 shares of common stock at a price to the public of $12.00 per share. 6,250,000 shares were offered and sold by Everbridge and 2,375,000 shares were offered and sold by existing stockholders of Everbridge, including 1,125,000 shares sold by certain of the selling stockholders pursuant to the full exercise of the underwriters’ option to purchase additional shares. Everbridge received approximately $69.8 million in proceeds from the offering, net of underwriting discounts and commissions, but before estimated offering expenses. Credit Suisse and BofA Merrill Lynch acted as joint book-running managers for the offering. Stifel, Pacific Crest Securities, a division of KeyBanc Capital Markets, Raymond James, Canaccord Genuity and William Blair acted as co-managers for the offering. This offering was made only by means of a prospectus. A copy of the final prospectus related to the offering can be obtained from Credit Suisse Securities (USA) LLC, Attention: Prospectus Department, One Madison Avenue, New York, New York, 10010, or by email at newyork.prospectus@credit-suisse.com; or from BofA Merrill Lynch NC1-004-03-43, 200 North College Street, 3rd floor, Charlotte NC  28255-0001, Attn: Prospectus Department, or by email at dg.prospectus_requests@baml.com. A registration statement relating to these securities has been filed with, and declared effective by, the U.S. Securities and Exchange Commission. Copies of the registration statement can be accessed by visiting the Securities and Exchange Commission website at www.sec.gov. This press release shall not constitute an offer to sell or the solicitation of an offer to buy, nor shall there be any sale of these securities in any state or jurisdiction in which such an offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction. About Everbridge Everbridge is a global software company that provides critical communications and enterprise safety applications that enable customers to automate and accelerate the process of keeping people safe and businesses running during critical events. During public safety threats such as active shooter situations, terrorist attacks or severe weather conditions, as well as critical business events such as IT outages or cyber incidents, over 3,000 global customers rely on the company’s SaaS-based platform to quickly and reliably construct and deliver contextual notifications to millions of people at one time. The company’s platform sent over 1 billion messages in 2015, and offers the ability to reach more than 200 countries and territories with secure delivery to over 100 different communication devices. The company’s critical communications and enterprise safety applications include Mass Notification, Incident Management, IT Alerting, Safety Connection™, Community Engagement™, Secure Messaging and Internet of Things, and are easy-to-use and deploy, secure, highly scalable and reliable. Everbridge serves 8 of the 10 largest U.S. cities, 8 of the 10 largest U.S.-based investment banks, all four of the largest global accounting firms, 24 of the 25 busiest North American airports and 6 of the 10 largest global automakers. Everbridge is based in Boston and Los Angeles with additional offices in San Francisco, Beijing and London. Media Contact: Jeff Benanto Everbridge jeff.benanto@everbridge.com 781-373-987 ### Investor Contact: Garo Toomajanian ICR ir@everbridge.com 818-230-9712