Document and Entity Information
Document and Entity Information - shares | 9 Months Ended | |
Sep. 30, 2015 | Nov. 01, 2015 | |
Document And Entity Information [Abstract] | ||
Document Type | 10-Q | |
Amendment Flag | false | |
Document Period End Date | Sep. 30, 2015 | |
Document Fiscal Year Focus | 2,015 | |
Document Fiscal Period Focus | Q3 | |
Trading Symbol | ATHX | |
Entity Registrant Name | ATHERSYS, INC / NEW | |
Entity Central Index Key | 1,368,148 | |
Current Fiscal Year End Date | --12-31 | |
Entity Filer Category | Accelerated Filer | |
Entity Common Stock, Shares Outstanding | 83,285,747 |
Condensed Consolidated Balance
Condensed Consolidated Balance Sheets - USD ($) $ in Thousands | Sep. 30, 2015 | Dec. 31, 2014 |
Current assets: | ||
Cash and cash equivalents | $ 28,533 | $ 26,127 |
Accounts and other receivables | 315 | 694 |
Prepaid expenses and other | 383 | 427 |
Total current assets | 29,231 | 27,248 |
Equipment, net | 1,167 | 1,270 |
Deferred tax assets | 195 | 200 |
Total assets | 30,593 | 28,718 |
Current liabilities: | ||
Accounts payable | 2,639 | 2,767 |
Accrued compensation and related benefits | 795 | 1,060 |
Accrued clinical trial costs | 179 | 126 |
Accrued expenses | 475 | 664 |
Deferred revenue | 10,000 | 75 |
Note payable | 189 | |
Total current liabilities | 14,277 | 4,692 |
Note payable | 183 | |
Warrant liabilities | $ 813 | $ 2,948 |
Stockholders' equity: | ||
Preferred stock, at stated value; 10,000,000 shares authorized, and no shares issued and outstanding at September 30, 2015 and December 31, 2014 | ||
Common stock, $0.001 par value; 150,000,000 shares authorized, and 83,285,747 and 77,706,816 shares issued and outstanding at September 30, 2015 and December 31, 2014, respectively | $ 83 | $ 78 |
Additional paid-in capital | 321,954 | 307,337 |
Accumulated deficit | (306,534) | (286,520) |
Total stockholders' equity | 15,503 | 20,895 |
Total liabilities and stockholders' equity | $ 30,593 | $ 28,718 |
Condensed Consolidated Balance3
Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares | Sep. 30, 2015 | Dec. 31, 2014 |
Statement of Financial Position [Abstract] | ||
Preferred stock, shares authorized | 10,000,000 | 10,000,000 |
Preferred stock, shares issued | 0 | 0 |
Preferred stock, shares outstanding | 0 | 0 |
Common stock, par value | $ 0.001 | $ 0.001 |
Common stock, shares authorized | 150,000,000 | 150,000,000 |
Common stock, shares issued | 83,285,747 | 77,706,816 |
Common stock, shares outstanding | 83,285,747 | 77,706,816 |
Condensed Consolidated Statemen
Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | ||
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014 | |
Revenues | ||||
Contract revenue | $ 39 | $ 75 | $ 194 | $ 155 |
Grant revenue | 357 | 218 | 1,149 | 1,233 |
Total revenues | 396 | 293 | 1,343 | 1,388 |
Costs and expenses | ||||
Research and development | 5,089 | 5,775 | 16,018 | 17,756 |
General and administrative | 1,941 | 1,695 | 5,751 | 5,303 |
Depreciation | 66 | 91 | 201 | 272 |
Total costs and expenses | 7,096 | 7,561 | 21,970 | 23,331 |
Loss from operations | (6,700) | (7,268) | (20,627) | (21,943) |
Other (expense) income, net | (79) | 8 | (31) | 62 |
Income from change in fair value of warrants, net | 255 | 2,540 | 609 | 6,335 |
Loss before taxes | (6,524) | (4,720) | (20,049) | (15,546) |
Tax benefit | 27 | 1 | 35 | 18 |
Net loss and comprehensive loss | $ (6,497) | $ (4,719) | $ (20,014) | $ (15,528) |
Net loss per share - Basic | $ (0.08) | $ (0.06) | $ (0.24) | $ (0.20) |
Weighted average shares outstanding - Basic | 83,140,864 | 77,320,425 | 81,736,273 | 76,755,599 |
Net loss per share - Diluted | $ (0.08) | $ (0.08) | $ (0.24) | $ (0.23) |
Weighted average shares outstanding - Diluted | 83,425,669 | 78,349,840 | 82,572,984 | 78,495,281 |
Condensed Consolidated Stateme5
Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) | 9 Months Ended | |
Sep. 30, 2015 | Sep. 30, 2014 | |
Operating activities | ||
Net loss | $ (20,014,000) | $ (15,528,000) |
Adjustments to reconcile net loss to net cash used in operating activities: | ||
Depreciation | 201,000 | 272,000 |
Stock-based compensation | 2,187,000 | 1,894,000 |
Change in fair value of warrant liabilities | (609,000) | (6,335,000) |
Changes in operating assets and liabilities: | ||
Accounts receivable | 379,000 | (145,000) |
Prepaid expenses and other | 55,000 | (29,000) |
Accounts payable and accrued expenses | (529,000) | 295,000 |
Deferred revenue | 9,925,000 | (81,000) |
Net cash used in operating activities | (8,405,000) | (19,657,000) |
Investing activities | ||
Purchases of equipment | (99,000) | (270,000) |
Net cash used in investing activities | (99,000) | (270,000) |
Financing activities | ||
Proceeds from issuance of common stock and warrants, net | 10,371,000 | 19,701,000 |
Purchase of treasury stock | (437,000) | (292,000) |
Proceeds from exercise of warrants | 976,000 | 938,000 |
Net cash provided by financing activities | 10,910,000 | 20,347,000 |
Increase in cash and cash equivalents | 2,406,000 | 420,000 |
Cash and cash equivalents at beginning of the period | 26,127,000 | 31,948,000 |
Cash and cash equivalents at end of the period | $ 28,533,000 | $ 32,368,000 |
Background and Basis of Present
Background and Basis of Presentation | 9 Months Ended |
Sep. 30, 2015 | |
Organization, Consolidation and Presentation of Financial Statements [Abstract] | |
Background and Basis of Presentation | 1. Background and Basis of Presentation We are an international biotechnology company that is focused primarily in the field of regenerative medicine and operate in one business segment. Our operations consist primarily of research and product development activities. The accompanying unaudited condensed consolidated financial statements should be read in conjunction with the audited financial statements and notes thereto included in our Annual Report on Form 10-K for the year ended December 31, 2014. The accompanying financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information and Article 10 of Regulation S-X. Accordingly, since they are interim statements, the accompanying financial statements do not include all of the information and notes required by GAAP for complete financial statements. The accompanying financial statements reflect all adjustments, consisting of normal recurring adjustments, that are, in the opinion of management, necessary for a fair presentation of financial position and results of operations for the interim periods presented. Interim results are not necessarily indicative of results for a full year. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Our critical accounting policies, estimates and assumptions are described in “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” which is included below in this Quarterly Report on Form 10-Q. Certain prior year amounts have been reclassified to conform with current year presentations. |
Recently Issued Accounting Stan
Recently Issued Accounting Standards | 9 Months Ended |
Sep. 30, 2015 | |
Accounting Changes and Error Corrections [Abstract] | |
Recently Issued Accounting Standards | 2. Recently Issued Accounting Standards In May 2014, the Financial Accounting Standards Board (“FASB”) issued ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 606).” ASU 2014-09 requires an entity to recognize revenue in a manner that depicts the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. To achieve that core principle, the amendment provides five steps that an entity should apply when recognizing revenue. The amendment also specifies the accounting of some costs to obtain or fulfill a contract with a customer and expands the disclosure requirements around contracts with customers. An entity can either adopt this amendment retrospectively to each prior reporting period presented or retrospectively with the cumulative effect of initially applying the update recognized at the date of initial application. In August 2015, the FASB issued ASU 2015-14, which delays the effective date by one year, making the new standard effective for annual reporting periods beginning after December 15, 2017, including interim periods within that reporting period. Early adoption is permitted for annual reporting periods beginning after December 15, 2016. We are in the process of evaluating, but have not determined, the impact that the adoption of ASU 2014-09 will have on our consolidated financial statements. In August 2014, the FASB issued ASU 2014-15, “Presentation of Financial Statements - Going Concern, Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern,” which establishes management’s responsibility to evaluate whether there is substantial doubt about an entity’s ability to continue as a going concern and, if so, to provide related footnote disclosures. ASU 2014-15 provides a definition of the term “substantial doubt” and requires an assessment for a period of one year after the date that the financial statements are issued or available to be issued. Management will also be required to evaluate and disclose whether it has plans to alleviate that doubt. The guidance is effective for the annual periods ending after December 15, 2016 and interim periods thereafter with early adoption permitted. We will adopt ASU 2014-15 as required. |
Net Loss per Share
Net Loss per Share | 9 Months Ended |
Sep. 30, 2015 | |
Earnings Per Share [Abstract] | |
Net Loss per Share | 3. Net Loss per Share Basic and diluted net loss per share have been computed using the weighted-average number of shares of common stock outstanding during the period. The table below reconciles the net loss and the number of shares used to calculate basic and diluted net loss per share for the three- and nine-month periods ended September 30, 2015 and 2014, in thousands. Three months ended Nine months ended September 30, 2015 2014 2015 2014 Numerator: Net loss attributable to common stockholders - Basic $ (6,497 ) $ (4,719 ) $ (20,014 ) $ (15,528 ) Less: income from change in fair value of warrants (220 ) (1,160 ) (196 ) (2,504 ) Net loss attributable to common stockholders used to calculate diluted net loss per share $ (6,717 ) $ (5,879 ) $ (20,210 ) $ (18,032 ) Denominator: Weighted-average shares outstanding - Basic 83,141 77,320 81,736 76,756 Potentially dilutive common shares outstanding: Warrants 285 1,030 837 1,739 Weighted-average shares used to calculate diluted net loss per share 83,426 78,350 82,573 78,495 Basic earnings per share $ (0.08 ) $ (0.06 ) $ (0.24 ) $ (0.20 ) Dilutive earnings per share $ (0.08 ) $ (0.08 ) $ (0.24 ) $ (0.23 ) We have outstanding options, restricted stock units and warrants that are not used in the calculation of diluted net loss per share because to do so would be antidilutive. The following instruments were excluded from the calculation of diluted net loss per share because their effects would be antidilutive: Three months ended September 30, Nine months ended September 30, 2015 2014 2015 2014 Stock options 7,151,392 6,261,164 7,151,392 6,261,164 Restricted stock units 1,304,493 2,142,779 1,304,493 2,142,779 Warrants 2,810,000 6,310,000 2,810,000 6,310,000 Total 11,265,885 14,713,943 11,265,885 14,713,943 |
Fair Value of Financial Instrum
Fair Value of Financial Instruments | 9 Months Ended |
Sep. 30, 2015 | |
Investments, All Other Investments [Abstract] | |
Fair Value of Financial Instruments | 4. Fair Value of Financial Instruments Fair Value Measurements We classify the inputs used to measure fair value into the following hierarchy: Level 1 Unadjusted quoted prices in active markets for identical assets or liabilities. Level 2 Unadjusted quoted prices in active markets for similar assets or liabilities, or unadjusted quoted prices for identical or similar assets or liabilities in markets that are not active, or inputs other than quoted prices that are observable for the asset or liability. Level 3 Unobservable inputs for the asset or liability. The following table provides a summary of the fair values of our assets and liabilities measured at fair value on a recurring basis as of September 30, 2015 (in thousands): Fair Value Measurements at September 30, 2015 Using Description Balance as of Quoted Prices in Active Significant Other Significant Unobservable Warrant liabilities $ 813 $ — $ — $ 813 We review and reassess the fair value hierarchy classifications on a quarterly basis. Changes from one quarter to the next related to the observability of inputs in a fair value measurement may result in a reclassification between fair value hierarchy levels. There were no reclassifications for all periods presented. The estimated fair value of warrants accounted for as liabilities, representing a level 3 fair value measure, was determined on the issuance date and subsequently marked to market at each financial reporting date. We use the Black-Scholes valuation model to value the warrant liabilities at fair value. The fair value is estimated using the expected volatility based on our historical volatility for warrants issued after January 1, 2013, or for warrants issued prior to 2013, using the historical volatilities of comparable companies from a representative peer group selected based on industry and market capitalization. The fair value of the warrants is determined using probability weighted-average assumptions, when appropriate. The following inputs were used at September 30, 2015: Expected Volatility Risk-Free Interest Rate Expected Life Warrants with one year or less remaining term 61.59% - 84.39% 0.01% – 0.33% 0.34 – 0.79 year Warrants with greater than one year remaining term 67.55% 0.33% 1.45 years A roll-forward of fair value measurements using significant unobservable inputs (Level 3) for the warrants is as follows (in thousands): Three months Nine months ended Balance July 1, 2015 $ 1,068 Balance January 1, 2015 $ 2,948 Settlements from exercise — Settlements from exercise (1,526 ) Income for the period (255 ) Income for the period (609 ) Balance September 30, 2015 $ 813 Balance September 30, 2015 $ 813 |
Collaborative Arrangements and
Collaborative Arrangements and Revenue Recognition | 9 Months Ended |
Sep. 30, 2015 | |
Organization, Consolidation and Presentation of Financial Statements [Abstract] | |
Collaborative Arrangements and Revenue Recognition | 5. Collaborative Arrangements and Revenue Recognition Chugai On October 20, 2015, we and Chugai Pharmaceutical Co. Ltd. (“Chugai”) agreed to terminate the License Agreement (the “Agreement”), dated February 28, 2015, between the parties, as a result of an inability to reach an agreement on the modification of the financial terms of the agreement and on the development strategy of our MultiStem ® Under the agreement, we received a non-refundable, up-front cash payment of $10 million from Chugai, of which approximately $2.0 million was temporarily withheld by Japan taxing authorities and was refunded in September 2015. The $10 million upfront payment from Chugai was recorded as deferred revenue at September 30, 2015 since we had concluded that the license grant did not have standalone value (as defined in ASC 605-25) at the inception of the arrangement. In connection with the termination and the parties having no further obligations under the Agreement, we will recognize the $10 million upfront payment from Chugai as revenue in October 2015. Pfizer In 2009, we entered into a collaboration with Pfizer Inc. (“Pfizer”) to develop and commercialize our MultiStem product candidate to treat inflammatory bowel disease for the worldwide market on an exclusive basis. In addition, Pfizer conducted a Phase 2 clinical study exploring the potential of MultiStem cell therapy to treat advanced and severe ulcerative colitis, and would be responsible for any subsequent development. Overall, the study results were disappointing, even though a single administration of the cell therapy may have had some short-term beneficial effects. Taking these results into account, following an internal portfolio review, Pfizer determined that it would not invest further in this program, as would be required by the collaboration, and notified us of this decision to terminate the license agreement effective in the third quarter of 2015. In connection with the termination, all rights that Pfizer had to the program reverted to us, and intellectual property generated through the collaboration is owned by us. RTI Surgical, Inc. In 2010, we entered into an agreement with RTI Surgical, Inc. (“RTI”) to develop and commercialize biologic implants using our technology for certain orthopedic applications in the bone graft substitutes market on an exclusive basis. Under the terms of the agreement, we received a non-refundable license fee in installments and performed certain services that were concluded in 2012, and we are eligible to receive cash payments upon the successful achievement of certain commercial milestones. We evaluated the nature of the events triggering these contingent payments and concluded that these events are substantive and that revenue will be recognized in the period in which each underlying triggering event occurs. No milestone revenue has been recognized to date. In addition, we began receiving in 2014 tiered royalties on worldwide commercial sales of implants using our technologies based on a royalty rate starting in the mid-single digits and increasing into the mid-teens. Any royalties may be subject to a reduction if third-party payments for intellectual property rights are necessary or commercially desirable to permit the manufacture or sale of the product. |
Stock-based Compensation
Stock-based Compensation | 9 Months Ended |
Sep. 30, 2015 | |
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] | |
Stock-based Compensation | 6. Stock-based Compensation We have two incentive plans that authorized an aggregate of 11,500,000 shares of common stock for awards to employees, directors and consultants. These equity incentive plans authorize the issuance of equity-based compensation in the form of stock options, stock appreciation rights, restricted stock, restricted stock units, performance shares and units, and other stock-based awards. As of September 30, 2015, a total of 2,426,442 shares of common stock have been issued under our equity incentive plans. As of September 30, 2015, a total of 617,673 shares were available for issuance under our equity compensation plans and stock-based awards to purchase 8,455,885 shares of common stock were outstanding. For the three-month periods ended September 30, 2015 and 2014, stock-based compensation expense was approximately $730,000 and $714,000, respectively. At September 30, 2015, total unrecognized estimated compensation cost related to unvested stock-based awards was approximately $4.4 million, which is expected to be recognized by the end of 2019 using the straight-line method. |
Issuance of Common Stock and Wa
Issuance of Common Stock and Warrants | 9 Months Ended |
Sep. 30, 2015 | |
Equity [Abstract] | |
Issuance of Common Stock and Warrants | 7. Issuance of Common Stock and Warrants In January 2014, we completed a registered direct offering generating net proceeds of approximately $18.8 million through the issuance of 5,000,000 shares of common stock and immediately exercisable warrants to purchase 1,500,000 shares of common stock with an exercise price of $4.50 per share that expire on July 15, 2016. The securities were sold in multiples of a fixed combination of one share of common stock and a warrant to purchase 0.30 shares of common stock at an offering price of $4.10 per fixed combination. During the quarter ended September 30, 2015, we did not sell any shares under the equity purchase agreement with Aspire Capital, and during the nine-month period ended September 30, 2015, we sold 4,023,719 shares of common stock at an average price of $2.58 per share. As of September 30, 2015, we had the following outstanding warrants to purchase shares of common stock: Number of Underlying Shares Exercise Price Expiration 1,310,000 $ 3.55 February 2, 2016 1,500,000 $ 4.50 July 15, 2016 2,054,893 $ 1.01 March 14, 2017 4,864,893 |
Warrant Liabilities
Warrant Liabilities | 9 Months Ended |
Sep. 30, 2015 | |
Text Block [Abstract] | |
Warrant Liabilities | 8. Warrant Liabilities We account for common stock warrants as either liabilities or as equity instruments depending on the specific terms of the warrant agreement. Registered common stock warrants that could require cash settlement are accounted for as liabilities. We classify these warrant liabilities on the consolidated balance sheet as a non-current liability. The warrant liabilities are revalued at fair value at each balance sheet date subsequent to the initial issuance. Changes in the fair market value of the warrant are reflected in the consolidated statement of operations as income (expense) from change in fair value of warrants. The warrants we issued in the January 2014 registered direct offering contain a provision for a cash payment in the event that the shares are not delivered to the holder within two trading days. The cash payment equals $10 per day per $2,000 of warrant shares for each day late. The warrants issued in the March 2012 private placement and the February 2011 registered direct offering each contain a provision for net cash settlement in the event that there is a fundamental transaction (e.g., merger, sale of substantially all assets, tender offer, or share exchange). If a fundamental transaction occurs in which the consideration issued consists of all cash or stock in a non-public company, then the warrant holder has the option to receive cash equal to a Black Scholes value of the remaining unexercised portion of the warrant. Further, the March 2012 warrants include price protection in the event we sell stock below the exercise price, as defined, and the exercise price was reduced in February 2013 to $1.01 per share as a result of the October 2012 public offering. The warrants have been classified as liabilities, as opposed to equity, due to the potential adjustment to the exercise price that could result upon late delivery of the shares or potential cash settlement upon the occurrence of certain events as described above, and are recorded at their fair values at each balance sheet date. |
Income Taxes
Income Taxes | 9 Months Ended |
Sep. 30, 2015 | |
Income Tax Disclosure [Abstract] | |
Income Taxes | 9. Income Taxes We have U.S. federal, state and foreign net operating loss, research and development tax credit and foreign tax credit carryforwards that may be used to reduce future taxable income and tax liabilities. Substantially all of our deferred tax assets have been fully offset by a valuation allowance due to our cumulative losses. As a result of our October 2012 equity offering, the utilization of our net operating loss and tax credit carryforwards generated prior to October 2012 is substantially limited under Section 382 of the Internal Revenue Code. U.S. federal net operating loss carryforwards, research and development tax credits, and state and local net operating loss carryforwards generated after October 2012, as well as foreign net operating loss carryforwards and foreign tax credits, are not subject to annual limitations. We recognize refundable tax benefits related to research and development credits associated with our foreign subsidiary. |
Recently Issued Accounting St15
Recently Issued Accounting Standards (Policies) | 9 Months Ended |
Sep. 30, 2015 | |
Accounting Changes and Error Corrections [Abstract] | |
Revenue from Contracts with Customers | In May 2014, the Financial Accounting Standards Board (“FASB”) issued ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 606).” ASU 2014-09 requires an entity to recognize revenue in a manner that depicts the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. To achieve that core principle, the amendment provides five steps that an entity should apply when recognizing revenue. The amendment also specifies the accounting of some costs to obtain or fulfill a contract with a customer and expands the disclosure requirements around contracts with customers. An entity can either adopt this amendment retrospectively to each prior reporting period presented or retrospectively with the cumulative effect of initially applying the update recognized at the date of initial application. In August 2015, the FASB issued ASU 2015-14, which delays the effective date by one year, making the new standard effective for annual reporting periods beginning after December 15, 2017, including interim periods within that reporting period. Early adoption is permitted for annual reporting periods beginning after December 15, 2016. We are in the process of evaluating, but have not determined, the impact that the adoption of ASU 2014-09 will have on our consolidated financial statements. |
Presentation of Financial Statements | In August 2014, the FASB issued ASU 2014-15, “Presentation of Financial Statements - Going Concern, Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern,” which establishes management’s responsibility to evaluate whether there is substantial doubt about an entity’s ability to continue as a going concern and, if so, to provide related footnote disclosures. ASU 2014-15 provides a definition of the term “substantial doubt” and requires an assessment for a period of one year after the date that the financial statements are issued or available to be issued. Management will also be required to evaluate and disclose whether it has plans to alleviate that doubt. The guidance is effective for the annual periods ending after December 15, 2016 and interim periods thereafter with early adoption permitted. We will adopt ASU 2014-15 as required. |
Net Loss per Share (Tables)
Net Loss per Share (Tables) | 9 Months Ended |
Sep. 30, 2015 | |
Earnings Per Share [Abstract] | |
Net Loss and Number of Shares Used to Calculate Basic and Diluted Net Loss Per Share | The table below reconciles the net loss and the number of shares used to calculate basic and diluted net loss per share for the three- and nine-month periods ended September 30, 2015 and 2014, in thousands. Three months ended Nine months ended September 30, 2015 2014 2015 2014 Numerator: Net loss attributable to common stockholders - Basic $ (6,497 ) $ (4,719 ) $ (20,014 ) $ (15,528 ) Less: income from change in fair value of warrants (220 ) (1,160 ) (196 ) (2,504 ) Net loss attributable to common stockholders used to calculate diluted net loss per share $ (6,717 ) $ (5,879 ) $ (20,210 ) $ (18,032 ) Denominator: Weighted-average shares outstanding - Basic 83,141 77,320 81,736 76,756 Potentially dilutive common shares outstanding: Warrants 285 1,030 837 1,739 Weighted-average shares used to calculate diluted net loss per share 83,426 78,350 82,573 78,495 Basic earnings per share $ (0.08 ) $ (0.06 ) $ (0.24 ) $ (0.20 ) Dilutive earnings per share $ (0.08 ) $ (0.08 ) $ (0.24 ) $ (0.23 ) |
Instruments Excluded from Calculation of Diluted Net Loss Per Share | The following instruments were excluded from the calculation of diluted net loss per share because their effects would be antidilutive: Three months ended September 30, Nine months ended September 30, 2015 2014 2015 2014 Stock options 7,151,392 6,261,164 7,151,392 6,261,164 Restricted stock units 1,304,493 2,142,779 1,304,493 2,142,779 Warrants 2,810,000 6,310,000 2,810,000 6,310,000 Total 11,265,885 14,713,943 11,265,885 14,713,943 |
Fair Value of Financial Instr17
Fair Value of Financial Instruments (Tables) | 9 Months Ended |
Sep. 30, 2015 | |
Investments, All Other Investments [Abstract] | |
Summary of Fair Values of Assets and Liabilities Measured at Fair Value on Recurring Basis | The following table provides a summary of the fair values of our assets and liabilities measured at fair value on a recurring basis as of September 30, 2015 (in thousands): Fair Value Measurements at September 30, 2015 Using Description Balance as of Quoted Prices in Active Significant Other Significant Unobservable Warrant liabilities $ 813 $ — $ — $ 813 |
Fair Value of Warrants Based on Historical Volatilities | The fair value of the warrants is determined using probability weighted-average assumptions, when appropriate. The following inputs were used at September 30, 2015: Expected Volatility Risk-Free Interest Rate Expected Life Warrants with one year or less remaining term 61.59% - 84.39% 0.01% – 0.33% 0.34 – 0.79 year Warrants with greater than one year remaining term 67.55% 0.33% 1.45 years |
Roll-Forward of Fair Value Measurements Using Significant Unobservable Inputs (Level 3) for Warrants | A roll-forward of fair value measurements using significant unobservable inputs (Level 3) for the warrants is as follows (in thousands): Three months Nine months ended Balance July 1, 2015 $ 1,068 Balance January 1, 2015 $ 2,948 Settlements from exercise — Settlements from exercise (1,526 ) Income for the period (255 ) Income for the period (609 ) Balance September 30, 2015 $ 813 Balance September 30, 2015 $ 813 |
Issuance of Common Stock and 18
Issuance of Common Stock and Warrants (Tables) | 9 Months Ended |
Sep. 30, 2015 | |
Equity [Abstract] | |
Outstanding Warrants to Purchase Shares of Common Stock | As of September 30, 2015, we had the following outstanding warrants to purchase shares of common stock: Number of Underlying Shares Exercise Price Expiration 1,310,000 $ 3.55 February 2, 2016 1,500,000 $ 4.50 July 15, 2016 2,054,893 $ 1.01 March 14, 2017 4,864,893 |
Background and Basis of Prese19
Background and Basis of Presentation - Additional Information (Detail) | 9 Months Ended |
Sep. 30, 2015Segment | |
Accounting Policies [Abstract] | |
Number of business segments | 1 |
Net Loss per Share - Net Loss a
Net Loss per Share - Net Loss and Number of Shares Used to Calculate Basic and Diluted Net Loss Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended | ||
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014 | |
Numerator: | ||||
Net loss attributable to common stockholders - Basic | $ (6,497) | $ (4,719) | $ (20,014) | $ (15,528) |
Less: income from change in fair value of warrants | (220) | (1,160) | (196) | (2,504) |
Net loss attributable to common stockholders used to calculate diluted net loss per share | $ (6,717) | $ (5,879) | $ (20,210) | $ (18,032) |
Denominator: | ||||
Weighted-average shares outstanding - Basic | 83,140,864 | 77,320,425 | 81,736,273 | 76,755,599 |
Potentially dilutive common shares outstanding: | ||||
Warrants | 285,000 | 1,030,000 | 837,000 | 1,739,000 |
Weighted-average shares used to calculate diluted net loss per share | 83,425,669 | 78,349,840 | 82,572,984 | 78,495,281 |
Basic earnings per share | $ (0.08) | $ (0.06) | $ (0.24) | $ (0.20) |
Dilutive earnings per share | $ (0.08) | $ (0.08) | $ (0.24) | $ (0.23) |
Net Loss per Share - Instrument
Net Loss per Share - Instruments Excluded from Calculation of Diluted Net Loss Per Share (Detail) - shares | 3 Months Ended | 9 Months Ended | ||
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014 | |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
Total | 11,265,885 | 14,713,943 | 11,265,885 | 14,713,943 |
Stock Options [Member] | ||||
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
Total | 7,151,392 | 6,261,164 | 7,151,392 | 6,261,164 |
Restricted Stock Units [Member] | ||||
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
Total | 1,304,493 | 2,142,779 | 1,304,493 | 2,142,779 |
Warrants [Member] | ||||
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
Total | 2,810,000 | 6,310,000 | 2,810,000 | 6,310,000 |
Fair Value of Financial Instr22
Fair Value of Financial Instruments - Summary of Fair Values of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands | Sep. 30, 2015 | Dec. 31, 2014 |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Warrant liabilities | $ 813 | $ 2,948 |
Fair Value Measurements, Recurring Basis [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Warrant liabilities | 813 | |
Fair Value Measurements, Recurring Basis [Member] | Significant Unobservable Inputs (Level 3) [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Warrant liabilities | $ 813 |
Fair Value of Financial Instr23
Fair Value of Financial Instruments - Fair Value of Warrants Based on Historical Volatilities (Detail) | 9 Months Ended |
Sep. 30, 2015 | |
Warrants With Greater Than One Year Remaining Term [Member] | |
Class of Warrant or Right [Line Items] | |
Expected Volatility | 67.55% |
Risk-Free Interest Rate | 0.33% |
Expected Life | 1 year 5 months 12 days |
Warrants With One Year or Less Remaining Term [Member] | Minimum [Member] | |
Class of Warrant or Right [Line Items] | |
Expected Volatility | 61.59% |
Risk-Free Interest Rate | 0.01% |
Expected Life | 4 months 2 days |
Warrants With One Year or Less Remaining Term [Member] | Maximum [Member] | |
Class of Warrant or Right [Line Items] | |
Expected Volatility | 84.39% |
Risk-Free Interest Rate | 0.33% |
Expected Life | 9 months 15 days |
Fair Value of Financial Instr24
Fair Value of Financial Instruments - Roll-Forward of Fair Value Measurements Using Significant Unobservable Inputs (Level 3) for Warrants (Detail) - Outstanding Warrants [Member] - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
Sep. 30, 2015 | Sep. 30, 2015 | |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] | ||
Beginning Balance | $ 1,068 | $ 2,948 |
Settlements from exercise | (1,526) | |
Income for the period | (255) | (609) |
Ending Balance | $ 813 | $ 813 |
Collaborative Arrangements an25
Collaborative Arrangements and Revenue Recognition - Additional Information (Detail) - USD ($) | 1 Months Ended | 9 Months Ended |
Oct. 31, 2015 | Sep. 30, 2015 | |
Chugai Collaboration [Member] | ||
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items] | ||
Up-front cash payment received | $ 10,000,000 | |
Deferred revenue recognized during period | 2,000,000 | |
Chugai Collaboration [Member] | Subsequent Event [Member] | ||
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items] | ||
Revenue recognition from up-front payment | $ 10,000,000 | |
RTI Surgical Inc [Member] | ||
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items] | ||
Commercial milestone revenue | $ 0 |
Stock-Based Compensation - Addi
Stock-Based Compensation - Additional Information (Detail) | 3 Months Ended | 9 Months Ended | ||
Sep. 30, 2015USD ($)shares | Sep. 30, 2014USD ($) | Sep. 30, 2015USD ($)Plansshares | Sep. 30, 2014USD ($) | |
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] | ||||
Number of incentive plans | Plans | 2 | |||
Common stock authorized for equity incentive plans | 11,500,000 | 11,500,000 | ||
Common stock shares issued | 2,426,442 | |||
Shares available for issuance | 617,673 | 617,673 | ||
Shares of common stock outstanding | 8,455,885 | 8,455,885 | ||
Stock-based compensation expense | $ | $ 730,000 | $ 714,000 | $ 2,187,000 | $ 1,894,000 |
Total unrecognized estimated compensation cost | $ | $ 4,400,000 | $ 4,400,000 |
Issuance of Common Stock and 27
Issuance of Common Stock and Warrants - Additional Information (Detail) $ / shares in Units, $ in Millions | 1 Months Ended | 3 Months Ended | 9 Months Ended | |
Jan. 31, 2014USD ($)$ / sharesshares | Sep. 30, 2015shares | Sep. 30, 2015$ / sharesshares | Feb. 28, 2013$ / shares | |
Class of Warrant or Right [Line Items] | ||||
Proceeds from issuance of common stock, net | $ | $ 18.8 | |||
Issuance of common stock, new issues | shares | 5,000,000 | |||
Warrants issued to purchase common stock | shares | 1,500,000 | |||
Warrant exercise price per share | $ 4.50 | $ 1.01 | ||
Warrants exercise expiration date | Jul. 15, 2016 | |||
Common stock per warrant conversion ratio | 0.30 | |||
Common stock and warrant combined offering price | $ 4.10 | |||
Aspire [Member] | Common Stock [Member] | ||||
Class of Warrant or Right [Line Items] | ||||
Issuance of common stock, new issues | shares | 0 | 4,023,719 | ||
Sale of shares at an average price | $ 2.58 |
Issuance of Common Stock and 28
Issuance of Common Stock and Warrants - Outstanding Warrants to Purchase Shares of Common Stock (Detail) - $ / shares | 9 Months Ended | ||
Sep. 30, 2015 | Jan. 31, 2014 | Feb. 28, 2013 | |
Class of Warrant or Right [Line Items] | |||
Number of Underlying Shares | 4,864,893 | ||
Exercise Price | $ 4.50 | $ 1.01 | |
February 2, 2016 [Member] | |||
Class of Warrant or Right [Line Items] | |||
Number of Underlying Shares | 1,310,000 | ||
Exercise Price | $ 3.55 | ||
Expiration | Feb. 2, 2016 | ||
July 15, 2016 [Member] | |||
Class of Warrant or Right [Line Items] | |||
Number of Underlying Shares | 1,500,000 | ||
Exercise Price | $ 4.50 | ||
Expiration | Jul. 15, 2016 | ||
March 14, 2017 [Member] | |||
Class of Warrant or Right [Line Items] | |||
Number of Underlying Shares | 2,054,893 | ||
Exercise Price | $ 1.01 | ||
Expiration | Mar. 14, 2017 |
Warrant Liabilities - Additiona
Warrant Liabilities - Additional Information (Detail) - USD ($) | 9 Months Ended | ||
Sep. 30, 2015 | Jan. 31, 2014 | Feb. 28, 2013 | |
Equity [Abstract] | |||
Terms of issuance of warrant demanding cash payments | The warrants we issued in the January 2014 registered direct offering contain a provision for a cash payment in the event that the shares are not delivered to the holder within two trading days. The cash payment equals $10 per day per $2,000 of warrant shares for each day late. | ||
Number of trading days to deliver shares under warrants provision | 2 days | ||
Value of warrants considered for cash payment for late delivery of shares | $ 2,000 | ||
Cash payment per day for warrants shares not delivered as per provision | $ 10 | ||
Warrant exercise price per share | $ 4.50 | $ 1.01 |