Sientra® Files Registration Statement for Proposed Initial Public Offering

SANTA BARBARA, Calif. (September 19, 2014) – Sientra, Inc., a medical aesthetics company, announced today that it has filed a registration statement on Form S-1 with the Securities and Exchange Commission relating to the proposed initial public offering of its common stock. The number of shares to be sold and the price range for the proposed offering have not yet been determined. Sientra plans to list its common stock on the New York Stock Exchange under the ticker symbol "SIEN."

Piper Jaffray and Stifel are acting as joint book-running managers for the offering. Leerink Partners and William Blair are acting as co-managers.

A registration statement relating to these securities has been filed with the Securities and Exchange Commission, but has not yet become effective. These securities may not be sold nor may offers to buy be accepted prior to the time that the registration statement becomes effective. This press release shall not constitute an offer to sell or the solicitation of an offer to buy these securities, nor shall there be any sale of these securities in any state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction.

The offering will be made only by means of a prospectus. Copies of the preliminary prospectus related to the offering may be obtained, when available, from Piper Jaffray & Co., Attention: Prospectus Department, 800 Nicollet Mall, J12S03, Minneapolis, Minnesota 55402, by telephone at (800) 747-3924, and by e-mail at prospectus@pjc.com; or from Stifel, Nicolaus & Company, Incorporated, Attention: Syndicate, One Montgomery Street, Suite 3700, San Francisco, California 94104, by telephone at (415) 364-2720, or by email at syndprospectus@stifel.com.

About Sientra

Headquartered in Santa Barbara, California, Sientra is a medical aesthetics company committed to making a difference in patients’ lives by enhancing their body image, growing their self-esteem and restoring their confidence. The Company was founded to provide greater choice to board-certified plastic surgeons and patients in need of medical aesthetics products. The Company has developed a broad portfolio of products with technologically differentiated characteristics, supported by independent laboratory testing and strong clinical trial outcomes. The Company sells its breast implants and breast tissue expanders exclusively to board-certified and board-admissible plastic surgeons and tailors its customer service offerings to their specific needs. The Company also offers a range of other aesthetic and specialty products.

Investor Contacts:
Matt Pigeon (Chief Financial Officer) and
Charlie Huiner (Chief Strategy and Corporate Development Officer)
at IR@Sientra.com or 888.708.0808