Sientra, the newest of the three sellers of breast implants in the US, raised $75 million by offering 5 million shares at $15, the midpoint of the range of $14 to $16. Sientra plans to list on the NASDAQ under the symbol SIEN. Sientra initially filed confidentially on 7/18/2014. Piper Jaffray and Stifel acted as lead managers on the deal.