Notes to Unaudited Condensed Financial Statements

1. Nature of Organization and Development Stage Operations

ImmunoCellular Therapeutics, Ltd. (the Company) is a development stage company that is seeking to develop and commercialize new therapeutics to fight cancer using the immune system.

Since the Company’s inception on February 25, 2004, the Company has been primarily engaged in the acquisition of certain intellectual property, together with development of its product candidates and the recent clinical testing activities for one of its vaccine product candidates, and has not generated any recurring revenues. As a result, the Company has incurred operating losses and, as of March 31, 2010, the Company had an accumulated deficit of $15,479,608. The Company expects to incur significant research, development and administrative expenses before any of its products can be launched and recurring revenues generated.

Interim Results

The accompanying condensed financial statements at March 31, 2010 and for the three months period ended March 31, 2009 and 2010 are unaudited, but include all adjustments, consisting of normal recurring entries, which the Company’s management believes to be necessary for a fair presentation of the periods presented. Interim results are not necessarily indicative of results for a full year. Balance sheet amounts as of December 31, 2009 have been derived from our audited financial statements as of that date.

The financial statements included herein have been prepared by the Company pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the U.S. have been condensed or omitted pursuant to such rules and regulations. Certain prior year amounts have been reclassified to conform to the 2010 financial statement presentation. The financial statements should be read in conjunction with the Company’s audited financial statements in its Form 10-K for the year ended December 31, 2009. The Company’s operating results will fluctuate for the foreseeable future. Therefore, period-to-period comparisons should not be relied upon as predictive of the results in future periods.

2. Summary of Significant Accounting Policies

Cash and Short-Term Investments – The Company considers all highly liquid debt instruments with an original maturity of 90 days or less to be cash equivalents. As of December 31, 2009 and March 31, 2010, the Company had $1,075,903 and $532,376, respectively, of certificates of deposit. These securities were fully covered by FDIC insurance and mature within the next six months. They are classified as held-to-maturity and under ASC Topic 320, “Investments—Debt and Equity Securities”, are measured at cost since the Company has the intent and ability to hold these securities to maturity.

Property and Equipment – Property and equipment are stated at cost and depreciated using the straight-line methods based on the estimated useful lives (generally three to five years) of the related assets. Computer and computer equipment are depreciated over 3 years. Management continuously monitors and evaluates the realizability of recorded long-lived assets to determine whether their carrying values have been impaired. The Company records impairment losses on long-lived assets used in operations when events and circumstances indicate that the assets might be impaired and the nondiscounted cash flows estimated to be generated by those assets are less than the carrying amount of those assets. Any impairment loss is measured by comparing the fair value of the asset to its carrying amount. Repairs and maintenance costs are expensed as incurred.

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Research and Development Costs – Research and development expenses consist of costs incurred for direct research and development and are expensed as incurred.

Stock Based Compensation – Financial Accounting Standards Board (FASB) ASC Topic 718, “Compensation—Stock Based” requires that the cost resulting for all share-based payment transactions be recognized in the Company’s condensed financial statements.

Fair value was estimated at the date of grant using the Black-Scholes pricing model, with the following weighted average assumptions:

The weighted-average grant-date fair value of options granted during the three months ended March 31, 2009 and 2010 was $0.13 and $0.61, respectively.

The risk-free interest rate used in the Black-Scholes valuation method is based on the implied yield currently available in U.S. Treasury securities at maturity with an equivalent term. The Company has not declared or paid any dividends and does not currently expect to do so in the future. The expected term of options represents the period that our stock-based awards are expected to be outstanding and was determined based on projected holding periods for the remaining unexercised shares. Consideration was given to the contractual terms of our stock-based awards, vesting schedules and expectations of future employee behavior. Expected volatility is based on market prices of traded options for comparable entities within our industry.

The Company’s stock price volatility and option lives involve management’s best estimates, both of which impact the fair value of the option calculated under the Black-Scholes methodology and, ultimately, the expense that will be recognized over the life of the option.

When options are exercised, our policy is to issue previously unissued shares of common stock to satisfy share option exercises. As of March 31, 2010, the Company had 57.4 million shares of authorized but unissued common stock.

No tax benefits were attributed to the stock-based compensation expense because a valuation allowance was maintained for substantially all net deferred tax assets.

Income Taxes – The Company accounts for federal and state income taxes in accordance with ASC Topic 740, “Income Taxes”. Under the liability method, a deferred tax asset or liability is determined based on the difference between the financial statement and tax basis of assets and liabilities, as measured by the enacted tax rates. The Company’s provision for income taxes represents the amount of taxes currently payable, if any, plus the change in the amount of net deferred tax assets or liabilities. A valuation allowance is provided against net deferred tax assets if recoverability is uncertain on a more likely than not basis. ASC 740 clarifies the accounting for uncertainty in income tax positions (“tax positions”). The provisions of ASC 740 require the Company to recognize in its financial statements the impact of a tax position if the position will more likely than not be sustained upon examination by a taxing authority, based on the technical merits of the position. In the initial year of adoption, ASC 740 provided that the cumulative effect of this change in accounting principle, if any, be recorded as an adjustment to opening retained earnings. The Company adopted the provisions of ASC 740 effective January 1, 2007. The adoption of the provisions of ASC 740 had no effect on the Company’s financial statements. The Company’s policy is to recognize interest related to unrecognized tax benefits as interest expense and penalties as operating expenses. The Company is not currently under examination by any taxing authority nor has it been notified of an impending examination.

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The Company recognizes interest and penalties for uncertain tax positions in income tax expense. Upon adoption and as of March 31, 2010, the Company had no interest and penalty accrual or expense.

Fair Value of Financial Instruments – The carrying amounts reported in the condensed balance sheets for cash, cash equivalents, short-term investments and accounts payable approximate their fair values due to their quick turnover.

Use of Estimates – The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make certain estimates and assumptions about the future outcome of current transactions which may affect the reporting and disclosure of these transactions. Accordingly, actual results could differ from those estimates used in the preparation of these financial statements.

Basic and Diluted Loss per Common Share – Basic and diluted loss per common share are computed based on the weighted average number of common shares outstanding. Common share equivalents (which consist of options and warrants) are excluded from the computation of diluted loss per share since the effect would be antidilutive. Common share equivalents which could potentially dilute basic earnings per share in the future, and which were excluded from the computation of diluted loss per share, totaled 18,113,917 shares and 39,014,677 shares at March 31, 2009 and 2010, respectively.

Recently Issued Accounting Standards – In June 2009, the FASB, issued the FASB Accounting Standards Codification. All existing accounting standard documents were superceded by the Codification and the Codification became the source of all authoritative generally accepted accounting principles, or GAAP, except for rules and interpretive releases from the SEC, which are still sources of authoritative GAAP for SEC registrants. All guidance contained in the Codification carries an equal level of authority. All other non-grandfathered, non-SEC accounting literature not included in the Codification has become nonauthoritative. The Codification is effective for interim or annual periods ending after September 15, 2009, and the Company is using the new guidelines and numbering systems prescribed by the Codification when referring to GAAP in these condensed financial statements for the period ended March 31, 2010. As the Codification was not intended to change or alter existing GAAP, it did not have any impact on the Company’s financial position or results of operations.

On January 1, 2009, the Company adopted ASC Topic 805, “ Business Combinations ”, to require that assets and liabilities assumed in a business combination that arise from contingencies be recognized at fair value if fair value can be reasonably estimated. The adoption of this provision did not have a material impact on the Company’s financial statements.

3. Property and Equipment

As of December 31, 2009 and March 31, 2010, $10,900 of equipment had been placed into service. Depreciation expense was $840 and $908 for the three months ended March 31, 2009 and March 31, 2010, respectively. Depreciation expense was $6,380 for the period from February 25, 2004 (date of inception) to March 31, 2010.

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4. Related-Party Transactions

Cedars-Sinai Medical Center License Agreement

In November 2006, the Company entered into a license agreement with Cedars-Sinai Medical Center (“Cedars-Sinai”) under which the Company acquired an exclusive, worldwide license to its technology for use as cellular therapies, including cancer stem cell and dendritic cell-based vaccines for neurological disorders that include brain tumors and neurodegenerative disorders and other cancers. This technology is covered by a number of pending U.S. and foreign patent applications, and the term of the license will be until the last to expire of any patents that are issued covering this technology.

As an upfront licensing fee, the Company issued Cedars-Sinai 694,000 shares of its common stock and paid Cedars-Sinai $62,000. Additional specified milestone payments will be required to be paid to Cedars-Sinai when the Company initiates patient enrollment in its first Phase III clinical trial and when it receives FDA marketing approval for its first product.

The Company has agreed to pay Cedars-Sinai specified percentages of all of its sublicensing income and gross revenues from sales of products based on the licensed technology, subject to a reduction if it must make any payments to any third party whose proprietary rights would be infringed by sale of the products. To maintain its rights to the licensed technology, the Company must meet certain development and funding milestones. These milestones include, among others, commencing a Phase I clinical trial for a product candidate by March 31, 2007 and raising at least $5,000,000 in funding from equity or other sources by December 31, 2008. The Company satisfied the foregoing funding requirement in 2007 and commenced a Phase I clinical trial in May 2007, which was within the applicable cure period for the milestone requirement. Through December 31, 2009, the Company has paid Cedars-Sinai a total of $166,660 in connection with the Phase I clinical trial. The Company also was required to commence a Phase II clinical trial for a product candidate by December 31, 2008 and a waiver of this requirement was obtained from Cedars-Sinai (see Second Amendment below).

On June 16, 2008, the Company entered into a First Amendment to Exclusive License Agreement (the “Amendment”) with Cedars-Sinai. The Amendment amended the License Agreement to include in the Company’s exclusive license from Cedars-Sinai under that agreement an epitope to CD133 and certain related intellectual property. Management believes this technology will be covered by a U.S. patent application that will be filed by the parties. Pursuant to the Amendment, the Company issued Cedars-Sinai 100,000 shares of the Company’s common stock as an additional license fee for the licensed CD133 epitope technology, which will be subject to the royalty and other terms of the License Agreement.

On July 22, 2009, the Company entered into a Second Amendment to Exclusive License Agreement (the “Second Amendment”) with Cedars-Sinai to become effective August 1, 2009. The Second Amendment amended the License Agreement to revise the milestones set forth in the License Agreement that the Company must achieve in order to maintain its license rights under that agreement. The revised milestones include the replacement of a milestone that required commencement of a Phase II clinical trial for the Company’s first product candidate by no later than December 31, 2008 with milestones that require commencement of a Phase I clinical trial for the Company’s second product candidate by no later than June 30, 2010 and commencement of a Phase II clinical trial for one of the Company’s product candidates by no later than March 31, 2012.

Effective March 23, 2010, the Company entered into a Third Amendment to Exclusive License Agreement (the “Third Amendment”) with Cedars-Sinai. The Third Amendment amended the License Agreement to revise the milestones set forth in the License Agreement that the Company must achieve in order to maintain its license rights under that agreement. The revised milestones include the replacement of a milestone that required commencement of a Phase I clinical trial for the Company’s second product candidate by no later than June 30, 2010 and commencement of a Phase II clinical trial for one of the Company’s product candidates by no later than March 31, 2012 with a requirement that the Company by September 30, 2010 either commence a Phase II clinical trial for its dendritic cell vaccine candidate or a Phase I clinical trial for its cancer stem cell vaccine candidate. The amendment also added a requirement that the Company obtain certain defined forms of equity or other funding in the amount of at least $2,500,000 by December 31, 2010 and a total of at least $5,000,000 by September 30, 2011.

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Legal Costs

As of December 31, 2009 and March 31, 2010, the Company was indebted to TroyGould PC, a shareholder, for legal services of $81,708 and $54,954, respectively, which are included in accrued expenses and accounts payable on the accompanying balance sheets. Legal services provided by the shareholder for the period from February 25, 2004 (date of inception) to March 31, 2010 were approximately $1,177,000.

5. Commitments and Contingencies:

Operating Lease

Effective March 1, 2010, the Company renewed its lease through March 31, 2011 at a monthly rental rate of $2,779. In May 2010, the Company amended its lease at a monthly rental rate of $2,320 for three months and at a monthly rental rate of $2,894 from the remaining months through June 30, 2011.

Employment Agreement with Dr. Manish Singh

On March 4, 2010, the Company entered into an Employment Agreement, effective as of February 18, 2010, with Dr. Manish Singh pursuant to which Dr. Singh will continue to serve on a full-time basis as the Company’s President and Chief Executive Officer for a one-year term commencing February 18, 2010. The Company is required under the Employment Agreement to use its commercially reasonable efforts to have Dr. Singh continue to serve as a member of the Company’s Board of Directors during the term of the Employment Agreement. The Employment Agreement may be extended for an additional one-year period upon the mutual agreement of the Company and Dr. Singh.

The Employment Agreement provides for an annual base salary of $300,000. In addition, provided that Dr. Singh continues to serve as the Company’s President and Chief Executive Officer for the entire one-year term of the Employment Agreement, the Company will pay Dr. Singh a discretionary cash bonus of up to $50,000 upon completion of the one-year term.

The Employment Agreement dated as of February 18, 2009 between the Company and Dr. Singh (the “Prior Agreement”) provides that Dr. Singh is entitled to receive cash milestone bonuses, not to exceed an aggregate amount of $200,000, of (1) $50,000 upon the Company’s completion of a financing, a strategic alliance or a merger or acquisition generating at least $2,500,000 of net proceeds (after commissions) during the term of the Prior Agreement, (2) $100,000 upon the Company’s completion of a financing, a strategic alliance or a merger or acquisition generating at least $5,000,000 of net proceeds (after commissions) during the term of the Prior Agreement, or (3) $200,000 upon the Company’s completion of a financing, a strategic alliance or a merger or acquisition generating at least $10,000,000 of net proceeds (after commissions) during the term of the Prior Agreement. The Prior Agreement also provides that an option granted to Dr. Singh to purchase 200,000 shares of the Company’s common stock will vest if the Company’s working capital is at least $8,000,000 at the end of the term of the Prior Agreement.

The Employment Agreement amends the Prior Agreement to provide that the milestones described in the preceding paragraph may be satisfied by including the net proceeds received by the Company at any time prior to August 17, 2010 from (1) a financing by the Socius Capital Group or (2) any private placement financing that is covered by a signed term sheet that was entered into by the Company prior to February 18, 2010 or from another source at the same or better terms as contemplated by such signed term sheet. Also, for purposes of determining whether the $8,000,000 working capital milestone in the preceding paragraph has been satisfied, the Employment Agreement provides that working capital will be calculated as of the date of the Company’s receipt of the proceeds that are being included to satisfy the milestone.

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Pursuant to the Employment Agreement, the Company granted to Dr. Singh a 7-year incentive stock option under the Company’s 2006 Equity Incentive Plan (the “Plan”), or a new qualified option plan, to purchase 600,000 shares of the Company’s common stock at an exercise price equal to $0.90 per share, which was the closing market price of the common stock on the option grant date. The option grant is subject to the approval by the Company’s stockholders of an increase in the authorized number of shares under the Plan and an increase in the number of shares that may be granted to any individual during a 12-month period. The option may be exercised during the period that Dr. Singh provides services to the Company and for 24 months after termination for any reason except termination for cause by the Company, provided that such exercise is within the 7-year term of the option.

The option granted to Dr. Singh under the Employment Agreement will vest (1) as to 360,000 shares, in 12 equal monthly installments of 30,000 shares each over the 12-month period from and immediately following the grant date, (2) as to 30,000 shares, if the Company achieves during the term of the Employment Agreement a volume-weighted average trading price for its common stock of greater than $1.60 for any consecutive 15-day trading period during the term of the agreement on average daily trading volume of at least 20,000 shares, (3) as to 90,000 shares, if the Company achieves during the term of the Employment Agreement a volume-weighted average trading price for its common stock of greater than $2.00 for any consecutive 15-day trading period during the term of the agreement on average daily trading volume of at least 20,000 shares, (4) as to 30,000 shares, upon treating the first patient in a Phase II clinical trial, and (5) as to 90,000 shares, if during the term of the Employment Agreement the Company completes a financing, a strategic alliance or a licensing agreement with upfront licensing payments to the Company or a merger or acquisition that generates at least $5,000,000 of net proceeds (after commissions) for the Company beyond the $10,000,000 achieved by August 17, 2010, with any financing proceeds received by the Company during the first 6 months of the Employment Agreement that are used to satisfy milestones under the Prior Agreement not being included as proceeds to satisfy the milestones described in this paragraph.

In the event that the Company terminates the Employment Agreement without cause or does not extend the Employment Agreement upon its expiration for an additional one-year term, then (1) the Company upon such termination will be required to make a lump sum payment to Dr. Singh equal to 6 months of his base annual salary, (2) any stock options granted to Dr. Singh, to the extent vested, will be retained by Dr. Singh and will be exercisable on the terms described above, and (3) the vesting of an additional number of shares subject to all options granted to Dr. Singh equal to 50% of all shares subject to such options that have not already vested will immediately accelerate and will be exercisable on the terms described above. If Dr. Singh terminates his employment for “good reason” as defined in the Employment Agreement, he will receive the severance benefits described in the preceding sentence, except that 100% of his options will vest if his employment terminates for good reason following a merger or similar corporate transaction in which the Company is not the surviving entity.

Employment Agreement with Dr. James Bender

On March 4, 2010, the Company entered into an Employment Agreement, effective as of February 1, 2010, with Dr. James Bender pursuant to which Dr. Bender will serve on a full-time basis as the Company’s Vice President – Product Development and Manufacturing for a one-year term commencing February 18, 2010. Prior to February 1, 2010, Dr. Bender had been serving on a part-time basis as the Company’s Vice President – Clinical Development pursuant to an Agreement dated as of September 1, 2009, as amended on September 14, 2009 (the “Prior Agreement”).

The Employment Agreement provides for an annual base salary of $170,000. Pursuant to the Employment Agreement, the Company granted to Dr. Bender a 7-year incentive stock option under the Company’s Plan to purchase 150,000 shares of the Company’s common stock at an exercise price equal to $0.90 per share, which was the closing market price of the common stock on the option grant date. The option grant is subject to the approval by the Company’s stockholders of an increase in the authorized number of shares under the Plan.

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The option granted to Dr. Bender under the Employment Agreement will vest at the rate of 6,250 shares per month over the term of the Employment Agreement as to 75,000 shares. The option will vest as to the remaining 75,000 shares upon the Company’s attainment of the following development milestones, and Dr. Bender will also be entitled to receive the following cash bonuses upon attainment of these milestones: (1) completion by September 30, 2010 of the technology transfer to a contract manufacturer for the Company’s ICT-107 product will result in a $10,000 cash bonus and the vesting of 25,000 option shares; (2) completion by December 31, 2010 of FDA acceptance of a Phase II clinical trial plan for ICT-107 will result in a $10,000 cash bonus and the vesting of 25,000 option shares; and (3) completion by December 31, 2010 of the enrollment of the first patient into the Phase II clinical trial for ICT-107 will result in a $10,000 bonus and the vesting of 25,000 option shares.

The Employment Agreement provides that all of the rights and obligations of the Company and Dr. Bender under the Prior Agreement (including Dr. Bender’s right to work for another organization) terminated as of January 31, 2010, except that Dr. Bender’s right under the Prior Agreement to receive cash bonuses and the vesting of options upon the Company’s achievement of specified development milestones will remain in effect.

The Employment Agreement provides that, except as described in the following sentence, if Dr. Bender’s employment terminates prior to the expiration of the one-year term, Dr. Bender will not have any right to receive further compensation under the Employment Agreement other than compensation that was accrued as of his employment termination date. If the Company terminates Dr. Bender’s employment without “cause” as defined in the Employment Agreement, 50% of any unvested options held by Dr. Bender as of the employment termination date will vest, and he will also have the right to receive any compensation that was accrued as of the employment termination date.

Agreement with Dr. John Yu

Effective March 1, 2010, the Company entered into an Agreement with Dr. Yu under which he agreed to serve on a part-time basis as the Company’s Chief Scientific Officer for a one-year term. The Agreement provides for an annual base salary of $70,000 and for cash bonuses of $15,000 each if prior to December 31, 2010 (i) the FDA has accepted a Phase II clinical trial plan for ICT-107 and (ii) a Physicians Investigator IND submission for one of the Company’s specified product candidates has been accepted by the FDA.

Pursuant to the Agreement, the Company granted to Dr. Yu a seven-year nonqualified stock option under the Company’s 2006 Equity Incentive Plan to purchase 125,000 shares of the Company’s common stock at an exercise price equal to $0.90 per share, which was the closing market price of the common stock on the option grant date. The option grant is subject to the approval by the Company’s stockholders of an increase in the authorized number of shares under the Plan. The option may be exercised during the period that Dr. Yu provides services to the Company and for 24 months after termination for any reason except termination for cause by the Company, provided that such exercise is within the seven-year term of the option.

The option granted to Dr. Yu under the Agreement will vest (i) as to 75,000 shares in four equal quarterly installments following the date of grant and (ii) as to the remaining 50,000 shares, 25,000 shares shall each vest upon timely satisfying the two milestones described above for the payment of cash bonuses to Dr. Yu.

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Agreement with C. Kirk Peacock

Effective as of October 30, 2008, the Company renewed, under similar terms, the consulting agreement with C. Kirk Peacock under which Mr. Peacock agreed to serve as Chief Financial Officer for a one-year term, subject to earlier termination by the Company or Mr. Peacock on 30 days notice. Mr. Peacock will provide his services to the Company on a part-time basis. Under the agreement with Mr. Peacock, Mr. Peacock will be paid $8,000 per month and was granted an option to purchase 50,000 shares of common stock, which will vest monthly over a one-year period, and exercisable within its term during the period Mr. Peacock provides services to the Company and for 24 months after the grantee ceases providing services for any reason other than termination by the Company for cause. Effective May 2009, the consulting agreement dated October 30, 2008 with C. Kirk Peacock was amended to reduce the amount to be paid to $6,000 per month. No other terms of the agreement were changed.

Effective October 30, 2009, the Company renewed the Consulting Agreement with Mr. Peacock under which he will continue to serve on a part-time basis as the Company’s Chief Financial Officer for a one-year term. Under this agreement, Mr. Peacock receives a monthly salary of $6,000 and was granted a seven-year non-qualified option to purchase 56,000 shares of the Company’s common stock at a price of $0.80 per share, with 50,000 shares covered by such option to vest in equal monthly installments over the one-year term of the agreement and with 50% of any those then unvested option shares to become vested if Mr. Peacock’s services are terminated by the Company without cause.

Provided that by October 29, 2010, all of the Company’s internal documentation and internal testing necessary to subsequently complete the Company’s Sarbanes-Oxley Section 404 audit has been finished, the Company will pay Mr. Peacock an additional $6,000 and a further 6,000 of his option shares will become vested. All vested shares covered by the option will be exercisable for 24 months after termination of Mr. Peacock’s services for any reason other than termination by the Company for cause.

Research and Development

In connection with the Cedars-Sinai Medical Center License Agreement, the Company has certain commitments as described in Note 4.

6. Shareholders’ Equity

Common Stock

In March 2010, the Company raised $1,740,000 (before commissions and offering expenses) from the sale of 1,740,000 shares of common stock and warrants to purchase 696,000 shares of common stock at an exercise price of $1.15 per share, to various investors in a private placement. The warrants have a term of 26 months from the date of issuance.

Preferred Stock

On December 3, 2009, the Company entered into a Preferred Stock Purchase Agreement dated as of December 3, 2009 (the “Preferred Stock Agreement”) with Socius Capital Group, LLC, a Delaware limited liability company d/b/a Socius Life Sciences Capital Group, LLC (the “Investor”). Pursuant to the Preferred Stock Agreement, the Company will issue to the Investor up to $10,000,000 of the Company’s newly created Series A Preferred Stock (the “Preferred Stock”). The purchase price of the Preferred Stock is $10,000 per share. The shares of Preferred Stock that are issued to the Investor will bear a cumulative dividend of 10.0% per annum, payable in shares of Preferred Stock, will be redeemable under certain circumstances and will not be convertible into shares of the Company’s common stock. Subject to the terms and conditions of the Preferred Stock Agreement, the Company has the right to determine (1) the number of shares of Preferred Stock that it will require the Investor to purchase from the Company, up to a maximum purchase price of $10,000,000, (2) whether it will require the Investor to purchase Preferred Stock in one or more traunches, and (3) the timing of such required purchase or purchases of Preferred Stock.

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The terms of the Preferred Stock are set forth in a Certificate of Designations of Preferences, Rights and Limitations of Series A Preferred Stock that the Company filed with the Delaware Secretary of State on December 3, 2009.

Pursuant to the Preferred Stock Agreement, the Company agreed to pay the Investor a commitment fee of $500,000 (the “Commitment Fee”), with $250,000 payable when the Company makes its first election to require the Investor to purchase shares of Preferred Stock and with the remaining $250,000 payable when the aggregate amount of Preferred Stock purchased by the Investor equals at least $5,000,000; provided, however, that the first $250,000 portion of the Commitment Fee will be due and payable on the six-month anniversary of the effective date of the registration statement described below even if no sales of Preferred Stock to the Investor have occurred by that date. The Company has the right to elect to pay each installment of the Commitment Fee in immediately available funds or by issuance of shares of common stock. In January 2010, the Company accrued $250,000 in commitment fees associated with the Preferred Stock Agreement, included in accrued liabilities in the accompanying balance sheet.

Concurrently with its execution of the Preferred Stock Agreement, the Company issued to the Investor a warrant (the “Warrant”) to purchase shares of common stock with an aggregate exercise price of up to $13,500,000 depending upon the amount of Preferred Stock that is purchased by the Investor. Each time that the Company requires the Investor to purchase shares of Preferred Stock, a portion of the Warrant will become exercisable by the Investor over a five-year period for a number of shares of common stock equal to (1) the aggregate purchase price payable by the Investor for such shares of Preferred Stock multiplied by 135%, with such amount divided by (2) the per share Warrant exercise price. The initial exercise price under the Warrant is $1.04 per share of common stock. Thereafter, the exercise price for each portion of the Warrant that becomes exercisable upon the Company’s election to require the Investor to purchase Preferred Stock will equal the closing price of the common stock on the date that the Company delivers its election notice. The Investor is entitled to pay the Warrant exercise price in immediately available funds, by delivery of a secured promissory note or, if a registration statement covering the resale of the common stock subject to the Warrant is not in effect, on a cashless basis.

Pursuant to the Preferred Stock Agreement, the Company agreed to file with the Securities and Exchange Commission a registration statement covering the resale of the shares of common stock that are issuable to the Investor under the Warrant and in satisfaction of the Commitment Fee. The registration statement was deemed effective on January 22, 2010. The 1.2 million shares of common stock registered for the Commitment Fee are held in escrow by the Company. As of March 31, 2010, the Company had not made an election to require the Investor to purchase shares of Preferred Stock.

Stock Options

In February 2005, the Company adopted an Equity Incentive Plan (“Plan”). Pursuant to the Plan, a committee appointed by the Board of Directors may grant, at its discretion, qualified or nonqualified stock options, stock appreciation rights and may grant or sell restricted stock to key individuals, including employees, nonemployee directors, consultants and advisors. Option prices for qualified incentive stock options (which may only be granted to employees) issued under the plan may not be less than 100% of the fair market value of the common stock on the date the option is granted (unless the option is granted to a person who, at the time of grant, owns more than 10% of the total combined voting power of all classes of stock of the Company; in which case the option price may not be less than 110% of the fair market value of the common stock on the date the option is granted). Option prices for nonqualified stock options issued under the Plan are at the discretion of the committee and may be equal to, greater or less than fair market value of the common stock on the date the option is granted. The options vest over periods determined by the Board of Directors and are exercisable no later than ten years from date of grant (unless they are qualified incentive stock options granted to a person owning more than 10% of the total combined voting power of all classes of stock of the Company, in which case the options are exercisable no later than five years from date of grant). As of December 31, 2009, the Company has reserved 3,400,000 shares of common stock

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for issuance under the Plan and options to purchase 3,072,503 common shares have been granted under the Plan that are currently outstanding. On September 14, 2009, options to purchase 270,000 common shares were granted that are contingent on approval by the Company’s stockholders of an increase in the total number shares of common stock reserved for issuance under the Plan. On March 4, 2010, options to purchase 1,025,000 common shares were granted that are contingent on approval by the Company’s stockholders of an increase in the total number shares of common stock reserved for issuance under the Plan.

The following is a summary of stock option grants issued outside the Plan:

In January 2007, the Company granted an option to purchase 1,500,000 shares of its common stock at an exercise price of $1.10 per share to the Chairman of the Company’s Scientific Advisory Board.

In November 2006, the Company granted an option to purchase 300,000 shares of its common stock at an exercise price of $1.00 per share to an affiliate of the Company’s then Chairman of the Board.

In November 2006, the Company granted an option to purchase 5,933,424 shares of its common stock at an exercise price of $1.00 per share to a Board member in connection with the Cedars-Sinai license acquisition.

The following table summarizes stock option activity for the Company during the three months ended March 31, 2010:

As of March 31, 2010, the total unrecognized compensation cost related to unvested stock options amounted to $636,890, which will be amortized over the weighted-average remaining requisite service period of less than one year.

Warrants

In January 2009, the Company delivered notice to warrant holders in connection with the reduction from $2.50 to $0.25 per share of the exercise price of warrants to purchase a total of 6,112,583 shares of the Company’s common stock and in connection with the extension of the expiration date of warrants to purchase a total of 6,412,583 shares of the Company’s common stock from earlier dates in 2009 to June 30, 2009. The Company valued the warrant modification at $611,258, using the Black-Scholes pricing model and the following assumptions: contractual term of 0.45 years, an average risk-free interest rate of 0.29% a dividend yield of 0% and volatility of 118%. In the footnotes to the Company’s financial statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2008, the Company disclosed that it anticipated taking a non-cash charge of approximately $500,000

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in the first quarter of 2009. In the first quarter 2009, the Company determined that the warrant modification should be treated as a dividend in-kind and not a non-cash charge, and since the Company was in a deficit position at the time of the modification, no dividend was recorded.

On June 30, 2009, the Company issued 1,970,992 shares of its common stock to 58 purchasers upon their exercise of warrants. The exercise price of 1,670,992 shares was $0.25 per share, and the exercise price of 300,000 shares was $0.15 per share. The Company received an aggregate purchase price of $462,748, and the Company did not pay any underwriting discounts or commissions in the transaction. As of March 31, 2010, the Company had no outstanding stock purchase warrants issued to investors.

Warrant Liability

In connection with the Company’s March 2010 private placement, the Company issued to the investors warrants to purchase 696,000 shares of the Company’s common stock at $1.15 per share. Of the total proceeds from the March 2010 private placement, net of repurchases, $257,520 was allocated to the freestanding warrants associated with the units based upon the fair value of the warrants. The warrants contain a provision whereby the warrant exercise price would be decreased in the event that future common stock issuances are made at a price less than $1.00. Accordingly, under ASC 815 “Derivatives and Hedging” the warrants do not qualify for equity treatment, and are recognized as a liability. The warrant liability will be adjusted to fair value each reporting period, and any changes in value will be recognized in the statement of operations. The assumptions used in the Black Scholes model for determining the initial fair value of the warrants were as follows: (1) dividend yield of 0%; (2) expected volatility of 102%, (3) risk-free interest rate of 1.00%, and (4) contractual life of 26 months. For the three months ended March 31, 2010, the Company recorded a charge for the change in fair value of warrant liability of $(6,960).

Promissory Note

In October 2009, the Company’s former President exercised stock options for 150,479 shares of common stock and as provided under the stock option agreement provided the Company with a full recourse five-year promissory note bearing interest of 2.59% per annum. The promissory note is secured by a pledge of shares being acquired with all proceeds of any sale to be applied first to retire in full the promissory note. The Company recorded the promissory note as an offset against shareholders’ equity.

7. Comprehensive Loss

For the three months ended March 31, 2009 and 2010, there was no other comprehensive loss and accordingly a Statement of Other Comprehensive Loss has not been presented. Comprehensive income would normally include: foreign currency translation adjustments, a change in the market value of a futures contract that qualifies as a hedge of an asset reported at fair value, a net loss recognized as an additional pension liability not yet recognized as net periodic pension cost, and unrealized holding gains and losses on available-for-sale securities.

8. Subsequent Event

Private Placement

On May 17, 2010, the Company raised $2,740,001 (before commissions and offering expenses) from the sale of 2,490,910 shares of common stock and warrants to purchase 1,245,455 shares of common stock at an exercise price of $1.50 per share, to various investors in a private placement. The warrants have a term of 36 months from the date of issuance.

On May 2, 2010, the Company issued and sold 400 shares of non-convertible, redeemable Series A preferred stock to Socius Capital Group, LLC pursuant to the terms of a Preferred Stock Purchase Agreement between the Company and Socius dated as of December 3, 2009. The aggregate purchase price for the Series A preferred stock was $4,000,000 (less $255,000 representing an administrative fee and a commitment fee due and owing to Socius under the Purchase Agreement). Under the terms of the Purchase Agreement, Socius remains obligated, from time to time until December 3, 2012, to purchase up to an additional 600 shares of Series A preferred stock at a purchase price of $10,000 per share upon notice from the Company to Socius, and subject to the satisfaction of certain conditions, as set forth in the Purchase Agreement.

In connection with the foregoing transaction, a portion of a warrant held by an affiliate of Socius became vested and exercisable covering 2,700,000 shares of the Company’s common stock for a five-year period at an exercise price of $2.00 per share under the terms of the Purchase Agreement, and in consideration of Socius agreeing to grant the Company certain waivers under the Purchase Agreement, this affiliate also became entitled to purchase up to an additional 1,350,000 shares of the Company’s common stock at an exercise price of $2.50 per share. On May 2, 2010, the affiliate of Socius exercised a portion of its warrant for 1,675,000 shares and paid the $3,350,000 exercise price for these shares by delivering a four-year full recourse promissory note for this amount, as permitted by the Purchase Agreement. The Company immediately thereafter redeemed approximately 248 of the preferred shares by offsetting the $3,350,000 redemption price for these shares against the $3,350,000 owed to the Company under the note.

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