The Company was incorporated in Minnesota on March 10, 2006 to manufacture and market innovative active implantable medical devices for the treatment of neurological disorders initially focusing on the treatment of chronic pain. Subsequently, the Company was reincorporated in Delaware on October 4, 2006 and relocated to California.

Since inception, the Company has incurred net losses and negative cash flows from operations. During the year ended December 31, 2018, the Company incurred a net loss of $49.2 million and used $5.7 million of cash in operations. At December 31, 2018, the Company had an accumulated deficit of $306.1 million and does not expect to experience positive cash flows in the immediate future. The Company has financed operations to date primarily through private placements of equity securities, borrowings under a debt agreement, the issuance of common stock in its November 2014 initial public offering and its June 2015 underwritten public offering, as well as its June 2016 underwritten public offering of convertible senior notes due in 2021. The Company’s ability to continue to meet its obligations and to achieve its business objectives for the foreseeable future is dependent upon, amongst other things, generating sufficient revenues and its ability to continue to control expenses to meet its obligations as they become due. Failure to increase sales of its products, manage discretionary expenditures or raise additional financing, if required, may adversely impact the Company’s ability to achieve its intended business objectives.

In November 2014, the Company completed its initial public offering (IPO) of shares of its common stock and as a result, the following transactions were recorded in the Company’s consolidated financial statements during the fourth quarter of 2014:

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the sale of 8,050,000 shares of common stock, including 1,050,000 from the exercise by the underwriters of their overallotment option, at an offering price of $18.00 per share, for net proceeds of $131.6 million, after deducting the underwriters’ discounts, commissions and offering costs paid by us; and

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immediately prior to the completion of the IPO, all the outstanding shares of the Company’s redeemable convertible preferred stock and convertible preferred stock were converted into 15,208,048 shares of common stock.

In June 2015, the Company completed an underwritten public offering of its common stock, which included shares of its common stock held by certain of its stockholders, and issued 2,470,587 shares of common stock, including 705,882 shares issued pursuant to the exercise in full by the underwriters of their option to purchase additional shares. The Company received cash proceeds of approximately $118.4 million, net of underwriting discounts and commissions and offering costs paid by the Company.

In June 2016, the Company issued $150.0 million aggregate principal amount of 1.75% convertible senior notes due 2021 in a registered underwritten public offering and an additional $22.5 million aggregate principal amount of such notes pursuant to the exercise in full of the over-allotment options of the underwriters (the 2021 Notes). The interest rates are fixed at 1.75% per annum and are payable semi-annually in arrears on June 1 and December 1 of each year, commencing on December 1, 2016. The total net proceeds from the debt offering, after deducting transaction costs, were approximately $166.2 million.