Basis of Presentation, Liquidity and Summary of Significant Accounting Policies | 2. Basis of Presentation, Liquidity and Summary of Significant Accounting Policies The unaudited condensed consolidated financial statements presented herein, and discussed below, have been prepared in accordance with GAAP for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X of the Securities Exchange Commission. In accordance with those rules and regulations certain information and footnote disclosures normally included in comprehensive consolidated financial statements have been condensed or omitted pursuant to such rules and regulations. The consolidated balance sheet as of December 31, 2016 was derived from the audited consolidated financial statements at that date, but does not include all the information and footnotes required by GAAP. These condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in BioTime’s Annual Report on Form 10-K for the year ended December 31, 2016. The accompanying interim condensed consolidated financial statements, in the opinion of management, include all adjustments, consisting only of normal recurring adjustments, necessary for a fair presentation of BioTime’s financial condition and results of operations. The condensed consolidated results of operations are not necessarily indicative of the results to be expected for any other interim period or for the entire year. Principles of consolidation – Although beginning on February 17, 2017 and May 13, 2016, respectively, OncoCyte and Asterias financial statements and results will no longer be part of BioTime’s consolidated financial statements and results, the market value of OncoCyte and Asterias common stock, as of those respective dates, held by BioTime will be reflected on BioTime’s consolidated balance sheet and changes in the market value of those shares will be reflected in BioTime’s consolidated statements of operations, allowing BioTime shareholders to evaluate the value of the respective OncoCyte and Asterias’ portion of BioTime’s business. For the period from January 1, 2017 through February 16, 2017, OncoCyte’s results of operations, comprehensive income or loss, and cash flows are included with BioTime’s consolidated statement of operations, statement of comprehensive income or loss and statement of cash flows for the three months ended March 31, 2017, after intercompany eliminations (see Notes 3 and 4). For the three months ended March 31, 2016, Asterias’ and OncoCyte’s results of operations, comprehensive income or loss and cash flows are included with BioTime’s consolidated statement of operations, statement of comprehensive income or loss and statement of cash flows, after intercompany eliminations (sees Notes 3, 4 and 5). As of December 31, 2016, OncoCyte’s assets, liabilities and net assets are included in the consolidated balance sheet of BioTime, after intercompany eliminations. Liquidity – sufficient cash, cash equivalents, and liquidity to carry out BioTime’s current operations through at least twelve months from the issuance date of the consolidated financial statements included herein. Although BioTime has no present plans to liquidate its holdings of Asterias or OncoCyte shares, if BioTime needs near term working capital or liquidity to supplement its cash and cash equivalents for its operations, BioTime may sell some, or all, of its Asterias or OncoCyte shares, as necessary. BioTime’s projected cash flows are subject to various risks and uncertainties. For example, clinical trials being conducted by Cell Cure will be funded in part with funds from grants and not from cash on hand. If Cell Cure were to lose its grant funding or BioTime is unable to continue to provide working capital to Cell Cure, or both, it may be required to delay, postpone, or cancel its clinical trials or limit the number of clinical trial sites, or otherwise reduce or curtail its operations unless it is able to obtain adequate financing from another source that could be used for its clinical trial. The unavailability or inadequacy of financing to meet future capital needs could force BioTime to modify, curtail, delay, or suspend some or all aspects of its planned operations. BioTime’s determination as to when it will seek new financing and the amount of financing that it will need will be based on BioTime’s evaluation of the progress it makes in its research and development programs, any changes to the scope and focus of those programs, and projection of future costs, revenues, and rates of expenditure. BioTime cannot assure that adequate financing will be available on favorable terms, if at all. Equity method accounting for Asterias and OncoCyte, at fair value – BioTime uses the equity method of accounting when it has the ability to exercise significant influence, but not control, as determined in accordance with GAAP, over the operating and financial policies of a company. For equity method assets which BioTime has elected to measure at fair value, unrealized gains and losses are reported in the consolidated statements of operations in other income (expenses), net. As further discussed in Notes 4 and 5, BioTime has elected to account for its Asterias and OncoCyte shares at fair value using the equity method of accounting because beginning on May 13, 2016 and February 17, 2017, the respective dates on which BioTime deconsolidated Asterias and OncoCyte, BioTime has not had control of Asterias and OncoCyte, as defined by GAAP, but continues to exercise significant influence over Asterias and OncoCyte. Under the fair value method, BioTime’s value in shares of common stock it holds in Asterias and OncoCyte is marked to market using the closing prices of Asterias and OncoCyte common stock on the NYSE MKT multiplied by the number of shares of Asterias and OncoCyte held by BioTime, with changes in the fair value of the Asterias and OncoCyte shares included in other income/expenses, net, in the condensed consolidated statements of operations. The Asterias and OncoCyte shares are considered level 1 assets as defined by ASC 820, Fair Value Measurements and Disclosures Basic and diluted net income (loss) per share attributable to common shareholders The primary components of the weighted average number of potentially dilutive common shares used to compute diluted net income per common share for the three months ended March 31, 2017 were approximately 330,000 shares of treasury stock (see Note 10), and approximately 342,000 restricted stock units and outstanding stock options (see Note 11). For the three months ended March 31, 2016, there were no potentially dilutive common share equivalents due to the net loss reported for this period presented. The following common share equivalents were excluded from the computation of diluted net income (loss) per common share for the periods presented because including them would have been antidilutive (in thousands): Three Months Ended March 31, (unaudited) 2017 2016 Stock options 4,701 5,454 Warrants 9,395 9,395 Treasury stock -- 4,473 Adoption of ASU 2016-09 , Improvements to Employee Share-Based Payment Accounting In March 2016, the FASB issued ASU 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting , which simplifies several aspects of the accounting for share-based payment transactions, including the income tax consequences, forfeitures, classification of awards as either equity or liabilities, and classification on the statement of cash flows. BioTime adopted ASU 2016-09 beginning on January 1, 2017. In connection with the adoption of ASU 2016-09, BioTime changed its accounting policies including how it accounts for excess tax benefits and deficiencies, if any, and forfeitures, as applicable. All excess tax benefits and tax deficiencies from stock based compensation awards accounted for under ASC 718 are recognized as an income tax benefit or expense, respectively, in the consolidated statements of operations. Prior to the adoption of ASU 2016-09, BioTime recognized excess tax benefits, if any, in additional paid-in capital only if the tax deduction reduced cash income taxes payable and, excess tax deficiencies were recognized either as an offset to accumulated excess tax benefits, if any, on BioTime’s consolidated statements of operations. An excess income tax benefit arises when the tax deduction of a share-based award for income tax purposes exceeds the compensation cost recognized for financial reporting purposes and, a tax deficiency arises when the compensation cost exceeds the tax deduction. Because BioTime has an insignificant number of stock option exercises during the current quarter, and BioTime’s full valuation allowance prior to March 31, 2017, the impact to BioTime’s consolidated statements of operations for any excess tax benefits or deficiencies was immaterial (see Notes 11 and 12). Forfeitures are now accounted for as they occur instead of based on the number of awards that were expected to vest. Based on the nature and timing of BioTime’s grants, straight line expense attribution of stock based compensation for the entire award and the relatively low forfeiture rates on BioTime’s experience, the impact of adoption of ASU 2016-09 pertaining to forfeitures was not material to BioTime’s consolidated financial statements. Recently Issued Accounting Pronouncements In November 2016, the FASB issued ASU 2016-18, “ Statement of Cash Flows (Topic 230) Reclassifications – |