This discussion and analysis should be read in conjunction with our unaudited condensed consolidated financial statements and notes thereto included in this Quarterly Report on Form 10-Q and the audited financial statements and notes thereto included in our Annual Report on Form 10-K for the year ended December 31, 2021. Operating results are not necessarily indicative of results that may occur in future periods.

Overview and Recent Developments

We are a biotechnology company that is focused primarily in the field of regenerative medicine. Our MultiStem® (invimestrocel) cell therapy, a patented and proprietary allogeneic stem cell product candidate, is our lead platform product and is currently in clinical development. Our most advanced program is an ongoing Phase 3 clinical trial for the treatment of ischemic stroke. Our clinical development programs are focused on treating neurological conditions, inflammatory and immune disorders, certain pulmonary conditions and other conditions where the current standard of care is limited or inadequate for many patients, particularly in the critical care segment.

Restructuring and Financial

In June 2022, we announced a restructuring of our organization, including an approximate 70% reduction in workforce. As part of the restructuring plan, we also announced changes to our executive team. Mr. William (B.J.) Lehmann, former President and Chief Operating Officer, left the Company on May 31, 2022. Dr. John Harrington, former Executive Vice President and Chief Scientific Officer, and Mr. Ivor Macleod, former Chief Financial Officer, left the Company on June 30, 2022.

In addition to the workforce reductions, in an effort to conserve cash and maintain adequate liquidity, we suspended operations in a number of areas including the reduction of our internal research function, plans for decommissioning certain equipment and suspending our manufacturing and process development efforts toward commercializing our MultiStem product candidate, if approved, as discussed below. We are currently unable to predict the duration of the suspension, and we plan to continue limited operations until we obtain additional funding. Our current development activities are limited to progressing our pivotal Phase 3 clinical trial of MultiStem cell therapy for the treatment of ischemic stroke, referred to as MASTERS-2 and supporting the Phase 2 clinical trial evaluating MultiStem cell therapy for the early treatment of traumatic injuries and the subsequent complications that result following severe trauma being conducted by The University of Texas Health Science Center at Houston, or UTHealth.

During the nine months ended September 30, 2022, we incurred charges in connection with the restructuring of $2.8 million which consisted primarily of employee severance and benefit costs. In addition to the restructuring charges, we also recorded a $5.4 million impairment of certain property and equipment.

As of November 11, 2022, we had accounts payable of $26.3 million, of which over 80% is owed to our primary contract manufacturer, that is currently due and we only had cash and cash equivalents of $13.8 million. We are actively working with our primary contract manufacturer to reach an agreement to address the outstanding accounts payable and continue our partnership going forward. The terms of any such agreement may entail our issuance of a convertible promissory note in exchange for a substantial reduction in the outstanding accounts payable, although there can be no assurance that we will be able to reach an agreement on terms acceptable to us or at all. To conserve cash, we have been managing our disbursements and working with our suppliers and service providers to address the outstanding accounts payable. In the near term, we will need to


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obtain significant capital through public or private equity offerings, debt financings, collaborations and licensing arrangements or other sources to continue to fund our operations. However, there can be no assurance that we will be able to obtain such funding on terms acceptable to us, on a timely basis or at all, particularly in light of our current stock price and liquidity. If we are unable to obtain adequate funding, we may be required to further delay, reduce or eliminate our MultiStem product candidate approval efforts, which could adversely affect our business prospects, and we may be unable to continue operations.

On October 14, 2022, we received a written notice from the Listing Qualifications Department of the Nasdaq Stock Market LLC that we are not in compliance with the requirement to maintain a minimum market value of our Common Stock of $35 million, as set forth in Nasdaq Listing Rule 5550(b)(2), because the market value of our Common Stock was below $35 million for 30 consecutive business days. We have a period of 180 calendar days from the date of the notice, or until April 12, 2023, to regain compliance under this standard.

Current Programs

Our MultiStem cell therapy product development programs in the clinical development stage include the following:

•Ischemic Stroke: Our MASTERS-2 clinical trial is a randomized, double-blind, placebo-controlled clinical trial designed to enroll 300 patients in the United States and certain other international locations. The study is evaluating efficacy and safety of MultiStem cell therapy in patients who have suffered moderate to moderate-severe ischemic stroke. We initiated the study with a limited number of high-enrolling sites and have been bringing on additional sites over time in line with clinical product supply and clinical operations objectives.

The MASTERS-2 study has received several regulatory designations and regulatory agreements including Special Protocol Assessment agreement, or SPA, Fast Track designation, Regenerative Medicine Advanced Therapy, or RMAT, designation and initial pediatric study plan, or iPSP agreement, from the United States Food and Drug Administration, or FDA, as well as a Final Scientific Advice positive opinion, Advanced Therapy Medicinal Product, or ATMP quality certification and pediatric investigation plan, or PIP, agreement from the European Medicines Agency, or EMA.

In addition, HEALIOS K.K., or Healios, our collaborator in Japan, conducted a clinical trial, TREASURE, evaluating the safety and efficacy of administration of MultiStem cell therapy for the treatment of ischemic stroke. In May 2022, Healios reported topline results for the TREASURE study. While the TREASURE trial did not reach statistical significance on its primary endpoint, Excellent Outcome at 90 days, it did demonstrate improvement in pre-specified measures of functional "independence" and good outcomes, such as mRS < 2, Bartherl Index > 95 and Global Recovery.

We continue to analyze the TREASURE study results closely to evaluate whether any MASTERS-2 trial adjustments may be appropriate. Any adjustments to our MASTERS-2 trial will impact the timing of enrollment completion. In addition, given our liquidity issues, we have postponed initiating new clinical sites. To complete enrollment of our MASTERS-2 trial, we are dependent on our primary contract manufacturer to release clinical product, which is currently on hold because of our past due invoices owed to it. We are currently in discussions with our primary contract manufacturer regarding outstanding invoices as well as the supply of sufficient clinical product to complete the MASTERS-2 study. Due to these uncertainties, at this time, we are unable to predict when we will complete enrollment in our MASTERS-2 study, if at all. We will need to raise additional funding in order to complete our MASTERS-2 trial.

•ARDS: In January 2019 and January 2020, we announced summary results and one-year follow up results, respectively, from our exploratory clinical study of the intravenous administration of MultiStem cell therapy to treat patients who are suffering from acute respiratory distress syndrome, or ARDS, which is referred to as the MUST-ARDS study. The study results demonstrated a predictable and favorable tolerability profile. Importantly, there were lower mortality and greater ventilator-free days (VFD), and ICU-free days in the MultiStem-treated patient group compared to the placebo group. Average quality-of-life outcomes were higher in the MultiStem group compared to placebo through one year. In April 2019, the MultiStem cell therapy received Fast Track designation for the treatment of ARDS, and in September 2020, RMAT designation was received for the same program. In April 2020, in response to the COVID-19 pandemic, the FDA authorized the initiation of a Phase 2/3 pivotal study to assess the safety and efficacy of MultiStem therapy in subjects with moderate to severe ARDS, or the MACOVIA study. The MACOVIA study features an open-label lead-in dose escalation portion of the study, followed by double-blinded, randomized, placebo-controlled study cohorts, and the study is designed to enroll up to approximately 400 patients at leading pulmonary critical care centers throughout the United States. During 2021, we amended the protocol with the FDA to adjust the scope of the MACOVIA study to include subjects with ARDS induced by pathogens other than COVID-19. We received approval from the FDA to use MultiStem product manufactured with our bioreactor-based technology in the study, an important product development milestone. We have suspended initiating new sites and enrolling patients in the Phase 2 part of the MACOVIA trial prior to enrolling patients using our bioreactor-based technology. We now


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Table of Contents have data evaluating two different dosing levels of MultiStem. Analysis of this data will help inform the design of the next phase of the trial once we are ready to restart utilizing bioreactor manufactured MultiStem product. However, we are currently focusing resources on our MASTERS-2 study. Until we receive additional financing or establish a partnership to move forward with the next phase of the study, the MACOVIA trial has been suspended. Further, in 2019, Healios initiated the ONE-BRIDGE study in Japan for patients with pneumonia-induced and COVID-induced ARDS and, in August 2021, Healios reported top-line data from the ONE-BRIDGE study. We and Healios have conducted thorough analyses of the data from the MUST-ARDS and ONE-BRIDGE studies. The studies had comparable patient populations receiving the same MultiStem dose amount shortly following an ARDS diagnosis. Between the studies, excluding the COVID-ARDS cohort in the ONE-BRIDGE study, 60 ARDS subjects were enrolled in the studies, 40 receiving MultiStem treatment and the remaining 20 receiving placebo or standard of care. On a pooled basis, strong trends were observed in VFD survival, improved quality-of-life and reduction of key inflammatory biomarkers. For example, MultiStem-treated subjects had, on average, 5.5 more VFD in the first 28 days following diagnosis than non-treated subjects (p=0.07) and, on a median basis, 10.5 more VFD. In April 2022, Healios announced that, while the PMDA did not disagree with the efficacy and safety conclusions of the ONE-BRIDGE study, the PMDA advised Healios that additional supporting data is necessary for application for approval of MultiStem treatment for the ARDS indication in Japan. As a result of the guidance from the PMDA, Healios disclosed that it will continue discussions with PMDA.

•Trauma: In April 2020, the FDA authorized the initiation of a Phase 2 clinical trial evaluating MultiStem cell therapy for the early treatment of traumatic injuries and the subsequent complications that result following severe trauma. The trial is being conducted by The University of Texas Health Science Center at Houston, or UTHealth, at the Memorial Hermann-Texas Medical Center in Houston, Texas, one of the busiest Level 1 trauma centers in the United States. This study is being supported under a grant awarded to the McGovern Medical School at UTHealth from the Medical Technology Enterprise Consortium, and the Memorial Hermann Foundation is providing additional funding. We are providing the investigational clinical product manufactured with our bioreactor-based technology for the trial as well as regulatory and operational support. We will need to resolve our outstanding invoices with our primary contract manufacturing organization to receive sufficient clinical product to complete enrollment in this study.

Although some of our collaborators continue to engage in preclinical development and evaluation of MultiStem cell therapy in other indications for human health, we have suspended all of our own internal research efforts at this time to conserve cash and decrease expenses.

In connection with our restructuring plan, in the second quarter of 2022, we paused work performed at our Belgian subsidiary, ReGenesys BV, or ReGenesys, which was evaluating our cell therapy for use in treating disease and conditions in the animal health segment. We are exploring opportunities to out-license this program. We are in the process of winding down the ReGenesys operations, which we expect to complete by December 31, 2022.

We have agreements with our primary contract manufacturing organization for the manufacture of our MultiStem product candidate to supply our planned and ongoing clinical trials. In June 2022, we suspended these agreements and are attempting to negotiate payment terms. There can be no guarantee, however, that we will be successful in such negotiations. Under the terms of these agreements, we currently owe this contract manufacturing organization approximately $21.8 million and have significant future financial commitments to support our bioreactor manufacturing initiatives. We also were engaged in process development initiatives intended to increase manufacturing scale, reduce production costs and enhance process controls and product quality. These initiatives and the related investments were meant to enable us to meet potential commercial demand in the event of eventual regulatory approval. We have also paused these initiatives as we work to obtain additional funding. In addition, as part of our restructuring plan, we have undertaken efforts to sublet our leased facility at Stow, Ohio that was intended to potentially support our future manufacturing needs. Unless we are successful in subletting our facility at Stow, we will be obligated to continue to pay our lease payments, which are approximately $1.3 million annually, through June 2031.

Additionally, as part of our cost cutting initiatives, we have scaled back all activities intended to enable MultiStem commercialization, e.g., product branding, product reimbursement and marketing strategies.

Financial

On August 15, 2022, the Company entered into a placement agency agreement with A.G.P./Alliance Global Partners, or A.G.P., pursuant to which A.G.P. agreed to serve as exclusive placement agent for the issuance and sale of common stock and warrants. A.G.P received a placement fee of approximately $0.8 million and approximately $0.1 million for the reimbursement of expenses.


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On August 15, 2022, the Company entered into a securities purchase agreement, or the Purchase Agreement, with an investor, pursuant to which the Company agreed to issue and sell, in a registered direct offering, (i) an aggregate of 1,200,000 shares of the Company's common stock, or Common Stock, par value $0.001 per share, (ii) pre-funded warrants, or Pre-Funded Warrants, exercisable for an aggregate of 720,000 shares of Common Stock and (iii) warrants, or Common Warrants, exercisable for an aggregate of 1,920,000 shares of Common Stock, in combinations of one share of Common Stock or one Pre-Funded Warrant and one Common Warrant for a combined purchase price of $6.250 (less $0.0025 for any Pre-Funded Warrant). Subject to certain ownership limitations, under the terms of the Purchase Agreement, the Pre-Funded Warrants were exercisable upon issuance, and the Common Warrants were exercisable upon the six-month anniversary of issuance for a five- year period. Under the Purchase Agreement, each Pre-Funded Warrant was exercisable for one share of Common Stock at a price per share of $0.0025 and each Common Warrant is exercisable into one share of Common Stock at a price per share of $6.385. The offering closed on August 17, 2022, or the Closing Date, and the Company received net proceeds of approximately $11.0 million, after giving effect to the payment of placement fees and reimbursed expenses. On August 29, 2022, the Pre-Funded Warrants were exercised in full.

The Purchase Agreement contains certain restrictions that prohibit the Company from issuing its Common Stock in certain transactions for a period of 180 days following the Closing Date, or the Standstill Period. Additionally, in the event the Company proposes a future offering to sell shares of Common Stock during the twelve months following the Closing Date, the investor has the right to participate in each offering in an amount up to 30.0 percent, or the Participation Right.

On September 22, 2022, the Company entered into an amendment to the Purchase Agreement, or the Purchase Agreement Amendment, with the investor to, among other things, (i) amend the Common Warrants to be exercisable for a seven-year period after the six-month anniversary of the Closing Date, (ii) reduce the Standstill Period to 150 days following the Closing Date, (iii) reduce the term and the amount of the Participation Right to six months following the Closing Date and 20.0 percent in the aggregate of certain offered securities, and (iv) require the investor, subject to certain conditions, to participate in future offerings to sell certain securities to investors primarily for capital raising purposes during the six months following the Closing Date.

On September 22, 2022, in consideration of the Purchase Agreement Amendment, and without receiving any cash proceeds, the Company issued to the investor additional warrants exercisable for 2,000,000 shares of Common Stock, or the New Warrants, at a price of $6.385 for a seven-year period after the six-month anniversary of the date of issuance thereof.

In August 2021, we entered into a Comprehensive Framework Agreement for Commercial Manufacturing and Ongoing Support, or the Framework Agreement, with Healios, which provides for resolution of certain issues under the existing agreements between the parties. It also provides Healios with the deferral of certain milestone payments during the expensive initial commercial launch period. Under the Framework Agreement, we were entitled to a milestone payment in the amount of $3.0 million. Additionally, under the terms of the Framework Agreement, we were obligated to pay Healios $1.1 million by December 31, 2022. In September 2022, we received $1.9 million from Healios, which represents the milestone payment net of amounts owed to Healios. Additionally, to assist Healios with the advancement of its ischemic stroke and ARDS programs in Japan, in September 2022, we granted to Healios, subject to the terms of the licensing agreement, a non-exclusive license to make and have made MultiStem for the treatment of ischemic stroke and ARDS worldwide solely for import into Japan for use in Japan.

Healios recently alleged that we are in material breach of our Framework Agreement for, among other things, not meeting our supply obligations and cooperation and assistance obligations. We strongly disagree with Healios' allegations and will continue to work with Healios to try to resolve this dispute. However, there can be no assurance that we will be able to resolve this dispute without legal proceedings.

We have had equity purchase agreements in place since 2011 with Aspire Capital Fund, LLC, or Aspire Capital, that provided us the ability to sell shares to Aspire Capital from time to time. In May 2022, we entered into a new equity facility with Aspire Capital, or the 2022 Equity Facility, which provides us with the ability to sell up to $100.0 million of shares of our common stock over a two-year period. The terms of the 2022 Equity Facility are similar to the previous equity facilities. Our prior equity facility that was entered into in June 2021, or the 2021 Equity Facility, was fully utilized and terminated during the second quarter of 2022. On July 6, 2022, Aspire Capital terminated the 2022 Equity Facility. Aspire Capital had the right to terminate the 2022 Equity Facility at the time or any time after any of the Company's then-current executive officers ceased to be an executive officer or full time employee of the Company, which right was triggered in connection with the departures of Mr. Lehmann, Dr. Harrington and Mr. MacLeod. During the quarter ended September 30, 2022, we sold no shares of our common stock to Aspire Capital. During the quarter ended September 30, 2021, we sold 354,000 shares of our common stock to Aspire Capital at an average price of $37.19 per share.

On November 10, 2022, the Company completed a public offering of 5,004,545 shares of common sock and warrants to purchase 10,009,090 shares of common stock at a combined price of $1.10 per share and accompanying warrants for gross proceeds of approximately $5.5 million, before deducting placement agent fees and other offering expenses. The warrants have


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an exercise price of $1.10 per share, are exercisable immediately following the date of issuance and will expire five years from the date of issuance.

Results of Operations

Since our inception, our revenues have consisted of license fees, contract revenues, royalties and milestone payments from our collaborators, and grant proceeds. We have not derived revenue from our commercial sale of therapeutic products to date since we are in clinical development. In prior periods, research and development expenses consisted primarily of external clinical and preclinical study fees, manufacturing and process development costs, salaries and related personnel costs, legal expenses resulting from intellectual property prosecution processes, facility costs, restructuring charges and laboratory supply and reagent costs. We expense research and development costs as they are incurred. General and administrative expenses consist primarily of salaries and related personnel costs, professional fees, restructuring charges and other corporate expenses. We expect to continue to incur substantial losses through at least the next several years.

Three Months Ended September 30, 2022 and 2021

Revenues. Revenues for the three months ended September 30, 2022 were $0.1 million compared to $4.8 million for the three months ended September 30, 2021. The revenues are primarily associated with services provided to Healios under the Framework Agreement. At September 30, 2022, the services under the Framework Agreement are largely complete, and are limited to minimal close-out activities. Our collaboration revenues will fluctuate from period-to-period based on the services provided under our arrangement with Healios.

Research and Development Expenses. Research and development expenses decreased to$12.4 million for the three months ended September 30, 2022 from $17.2 million for the comparable period in 2021. The $4.8 million decrease is due to our restructuring plan which resulted in reduced salaries and benefits of $2.0 million, internal research supplies of $1.6 million, manufacturing costs of $0.2 million, outside services of $0.6 million and decreases in other research and development costs of $0.4 million. Our clinical development, clinical manufacturing and manufacturing process development expenses vary over time based on the timing and stage of clinical trials underway, manufacturing campaigns for clinical trials and manufacturing process development projects. These variations in activity level may also impact our accounts payable, accrued expenses, prepaid expenses and deposits balances from period to period. Other than external expenses for our clinical and preclinical programs, we generally do not track our research expenses by project; rather, we track such expenses by the type of cost incurred.

General and Administrative Expenses. General and administrative expenses were $3.7 million for the three months ended September 30, 2022, which was slightly higher than the $3.6 million for the comparable period in 2021. The increase is primarily related to restructuring costs. We expect our general and administrative expenses to decrease in connection with our restructuring plan.

Depreciation. Depreciation expense was $0.6 million for the three months ended September 30, 2022 and $0.2 million for the comparable period in 2021. The increase is due to the acceleration of depreciation associated with the decommissioning of certain equipment as a result of our restructuring plan.

Other Income, net. Other income, net, was $3.0 million for the three months ended September 30, 2022 compared to $0.1 million for the three months ended September 2021. The increase is due to a $2.8 million net gain on the fair value adjustment of our warrant liabilities and a net foreign currency gain of $0.2 million..

Nine Months Ended September 30, 2022 and 2021

Revenues. Revenues for the nine months ended September 30, 2022 were $5.3 million compared to $4.8 million revenues for the nine months ended September 30, 2021. These revenues were generated from our collaboration with Healios. Our collaboration revenues fluctuate from period to period based on new licenses conferred and the delivery of goods and services under our arrangement with Healios.

Research and Development Expenses. Research and development expenses increased to $54.2 million for the nine months ended September 30, 2022 from $52.4 million in the comparable period in 2021. The $1.8 million net increase is associated with an impairment charge of $5.4 million which is offset by decreases in internal research supplies of $2.0 million, consulting costs of $0.9 million, legal costs of $0.5 million and $0.2 million of other research and development expenses. Other than external expenses for our clinical and preclinical programs, we do not track our research expenses by project; rather, we track such expenses by the type of cost incurred. We expect these expenses to decrease in connection with our restructuring plan.

General and Administrative Expenses. General and administrative expenses decreased to $13.0 million for the nine months ended September 30, 2022 from $16.6 million in the comparable period in 2021. The $3.6 million decrease was primarily


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related to legal expenses incurred in the prior year in connection with the complaint filed by Dr. Kagimoto against the Company, its settlement and the expenses associated with Dr.Van Bokkelen's resignation and his separation letter agreement, including $2.3 million of non-cash stock compensation expense. We expect our annual 2022 general and administrative expenses to decrease compared to 2021 in connection with our restructuring plan.

Depreciation. Depreciation expense of $1.5 million for the nine months ended September 30, 2022 was higher compared to $1.2 million for the comparable period in 2021 due to the accelerated depreciation for certain manufacturing equipment resulting from our restructuring plan.

Other Income, net. Other income, net, was $3.8 million for the nine-month period ended September 30, 2022 and $0.1 million for the comparable 2021 period. The $3.7 million increase was due to a net gain of $2.8 million on the fair value adjustment of our warrant liabilities, insurance proceeds of $0.6 million that the Company received related to the complaint filed by Dr. Kagimoto against the Company which were not in the comparable period and an increase of foreign currency gains of $0.3 million.

Liquidity and Capital Resources

Our primary source of liquidity is our cash balance. At September 30, 2022, we had $13.8 million in cash and cash equivalents. We have primarily financed our operations through business collaborations, grant funding and equity financings, including through the equity facility we had with Aspire Capital. We conduct all of our operations through our subsidiary, ABT Holding Company. Consequently, our ability to fund our operations depends on ABT Holding Company's financial condition and its ability to make dividend payments or other cash distributions to us. There are no restrictions such as government regulations or material contractual arrangements that restrict the ability of ABT Holding Company to make dividend and other payments to us.

Our current capital requirements depend on a number of factors, including progress in our MASTERS-2 trial, additional external costs, such as payments to contract research organizations and contract manufacturing organizations, personnel costs and the costs of filing and prosecuting patent applications and enforcing patent claims. Furthermore, continued delays in product supply caused by nonpayment to our primary contract manufacturer for our clinical trials may impact the timing and cost of such studies.

We are entitled to receive potential milestones payments, subject to certain credits, and royalties from Healios under our licensed programs. Under the Framework Agreement, in September 2022, we received $1.9 million from Healios which represents a milestone payment in the amount of $3.0 million, net of amounts payable to Healios. We invoice Healios for certain manufacturing support services. Payments from Healios may be used by Healios to offset milestone payments that may become due in the future.

As of November 11, 2022, we had accounts payable of $26.3 million that is currently due, and we only had cash and cash equivalents of $13.8 million. To conserve cash, we have been delaying payments to most of our suppliers and service providers. In the near term, we will need to obtain significant capital through public or private equity offerings, debt financings, collaborations and licensing arrangements or other sources to continue to fund our operations. However, there can be no assurance that we will be able to obtain such funding on terms acceptable to us, on a timely basis or at all, particularly in light of our current stock price and liquidity. If we are unable to obtain funding, we may be required to further delay, reduce or eliminate our MultiStem product candidate approval and commercialization efforts, which would adversely affect our business prospects, and we likely will be unable to continue operations. If we are unable to obtain adequate financing, we likely would have to file for protection under the bankruptcy laws to continue to pursue potential transactions and conduct a wind down of our Company. If we decide to dissolve and liquidate our assets or to seek protection under the bankruptcy laws, it is unclear to what extent we will be able to pay our obligations, and, accordingly, it is further unclear whether and to what extent any resources will be available for distributions to stockholders.

We have prepared our unaudited condensed consolidated financial statements on a going concern basis, which assumes that we will realize our assets and satisfy our liabilities in the normal course of business. However, we have incurred losses since inception of our operations in 1995, have negative operating cash flows, including in each of the last three years, and had an accumulated deficit of $642.9 million at September 30, 2022. Our losses have resulted principally from costs incurred in research and development, clinical and preclinical product development, manufacturing and process development, acquisition and licensing costs, and general and administrative costs associated with our operations. These circumstances raise substantial doubt about our ability to continue as a going concern. The accompanying unaudited condensed financial statements do not include any adjustments to reflect the possible future effect on the recoverability and classification of assets or the amounts and classifications of liabilities that may result from the outcome of the uncertainty concerning our ability to continue as a going concern.

While we believe our restructuring plan will reduce costs and alleviate to some extent the conditions that raise substantial doubt, these plans are not entirely within our control and cannot be assessed as being probable of occurring. For the foreseeable


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future, our ability to continue our operations is dependent upon our ability to obtain additional capital, which may not be available to us on acceptable terms, on a timely basis or at all.

We expect to continue to incur substantial losses through at least the next several years and may incur losses in subsequent periods. The amount and timing of our future losses are highly uncertain. Our ability to achieve and thereafter sustain profitability will be dependent upon, among other things, successfully developing, commercializing and obtaining regulatory approval or clearances for our technologies and products resulting from these technologies.

We had equity purchase agreements in place with Aspire Capital since 2011 that provided us the ability to sell shares to Aspire Capital from time to time. The 2021 Equity Facility was fully utilized and terminated during the second quarter of 2022, and, on July 6, 2022, Aspire Capital terminated the 2022 Equity Facility. During the quarter ended September 30, 2022, we sold no shares of our common stock to Aspire Capital. During the quarter ended September 30, 2021, we sold 354,000 shares of our common stock to Aspire Capital at an average price of $37.19.

Cash Flow Analysis

Net cash used in operating activities was $47.0 million for the nine months ended September 30, 2022 compared to $56.9 million for the nine months ended September 30, 2021. Net cash used in operating activities may fluctuate significantly on a quarter-to-quarter basis, as it has over the past several years, primarily due to the receipt of fees from our collaborators and payment of clinical trial costs, such as clinical manufacturing campaigns, contract research organization costs and manufacturing process development projects. These variations in activity level may also impact our accounts receivable, accounts payable, accrued expenses, prepaid expenses and deposits balances from period to period.

Net cash used in investing activities was $2.0 million and $1.2 million for the nine months ended September 2022 and 2021, respectively. The fluctuations over the periods were due to the timing of additions to property and equipment primarily for our manufacturing process development activities.

Financing activities provided cash of $25.4 million and $56.1 million for the nine months ended September 30, 2022 and 2021, respectively. The decrease from the comparable period is primarily related to the termination of our equity purchase agreement with Aspire Capital in July 2022. Financing activities in 2022 include net proceeds of approximately $11.0 million from the issuance and sale of our common stock and warrants in a registered direct offering. Also included in financing activities for the nine months ended September 30, 2022 and September 30, 2021 are shares retained for withholding tax payments on stock-based awards.

Off-Balance Sheet Arrangements

We have no off-balance sheet arrangements.

Critical Accounting Policies and Management Estimates

The Securities and Exchange Commission, or the SEC, defines critical accounting policies as those that are, in management's view, important to the portrayal of our financial condition and results of operations and demanding of management's judgment. Our discussion and analysis of financial condition and results of operations are based on our consolidated financial statements, which have been prepared in accordance with U.S. generally accepted accounting principles. The preparation of these financial statements requires us to make estimates on experience and on various assumptions that we believe are reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from those estimates. A description of these accounting policies and estimates is included in Item 7 "Management's Discussion and Analysis of Financial Condition and Results of Operations" in our Annual Report on Form 10-K for the year ended December 31, 2021. There have been no material changes in our accounting policies and estimates as described in our Annual Report on Form 10-K for the year ended December 31, 2021.

For additional information regarding our accounting policies, see Note C to the Consolidated Financial Statements in our Annual Report on Form 10-K for the year ended December 31, 2021.

Cautionary Note on Forward-Looking Statements

This Quarterly Report on Form 10-Q contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 that involve risks and uncertainties. These forward-looking statements relate to, among other things, the expected timetable for development of our product candidates, our growth strategy, and our future financial performance, including our operations, economic performance, financial condition, prospects, and other future events. We have


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attempted to identify forward-looking statements by using such words as "anticipates," "believes," "can," "continue," "could," "estimates," "expects," "intends," "may," "plans," "potential," "should," "suggest," "will," or other similar expressions. These forward-looking statements are only predictions and are largely based on our current expectations. These forward-looking statements appear in a number of places in this Quarterly Report on Form 10-Q.

In addition, a number of known and unknown risks, uncertainties, and other factors could affect the accuracy of these statements. Some of the more significant known risks that we face are the risk that we will be unable to raise capital to fund our operations in the near term and long term, including our ability to obtain funding through public or private equity offerings, debt financings, collaborations and licensing arrangements or other sources, on terms acceptable to us or at all, and to continue as a going concern and our ability to successfully resolve the payment issues with our primary contract manufacturer and gain access to our clinical product. The following risks and uncertainties may cause our actual results, levels of activity, performance, or achievements to differ materially from any future results, levels of activity, performance, or achievements expressed or implied by these forward-looking statements:

•our ability to raise capital to fund our operations in the near term and long term, including our ability to obtain funding through public or private equity offerings, debt financings, collaborations and licensing arrangements or other sources, on terms acceptable to us or at all, and to continue as a going concern;

•our ability to successfully resolve the payment issues with our primary contract manufacturer and gain access to our clinical product;

•our collaborators' ability and willingness to continue to fulfill their obligations under the terms of our collaboration agreements and generate sales related to our technologies;

•the possibility of unfavorable results from ongoing and additional clinical trials involving MultiStem;

•the risk that positive results in a clinical trial may not be replicated in subsequent or confirmatory trials or success in an early stage clinical trial may not be predictive of results in later stage or large scale clinical trials;

•our ability to regain compliance with the requirement to maintain a minimum market value of listed securities of $35 million as set forth in Nasdaq Listing Rule 5550(b)(2);

•the timing and nature of results from MultiStem clinical trials, including the MASTERS-2 Phase 3 clinical trial evaluating the administration of MultiStem for the treatment of ischemic stroke;

•our ability to meet milestones and earn royalties under our collaboration agreements, including the success of our collaboration with Healios;

•the success of our MACOVIA clinical trial evaluating the administration of MultiStem for the treatment of ARDS induced by COVID-19 and other pathogens, and the MATRICS-1 clinical trial being conducted with The University of Texas Health Science Center at Houston evaluating the treatment of patients with serious traumatic injuries;

•the availability of product sufficient to meet our clinical needs and potential commercial demand following any approval;

•the possibility of delays in, adverse results of, and excessive costs of the development process;

•our ability to successfully initiate and complete clinical trials of our product candidates;

•the possibility of delays, work stoppages or interruptions in manufacturing by third parties or us, such as due to material supply constraints, contamination, operational restrictions due to COVID-19 or other public health emergencies, labor constraints, regulatory issues or other factors that could negatively impact our trials and the trials of our collaborators;

•uncertainty regarding market acceptance of our product candidates and our ability to generate revenues, including MultiStem cell therapy for neurological, inflammatory and immune, cardiovascular and other critical care indications;

•changes in external market factors;

•changes in our industry's overall performance;

•changes in our business strategy;

•our ability to protect and defend our intellectual property and related business operations, including the successful prosecution of our patent applications and enforcement of our patent rights, and operate our business in an environment of rapid technology and intellectual property development;


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•our possible inability to realize commercially valuable discoveries in our collaborations with pharmaceutical and other biotechnology companies;

•the success of our efforts to enter into new strategic partnerships and advance our programs;

•our possible inability to execute our strategy due to changes in our industry or the economy generally;

•changes in productivity and reliability of suppliers;

•the success of our competitors and the emergence of new competitors; and

•the risks described in our Annual Report on Form 10-K for the year ended December 31, 2021 under Item 1A, "Risk Factors." and our other filings with the SEC.

Any forward-looking statements in this Quarterly Report on Form 10-Q reflect our current views with respect to future events and is subject to these and other risks, uncertainties and assumptions relating to our operations, operating results, growth strategy and liquidity. Although we currently believe that the expectations reflected in the forward-looking statements are reasonable, we cannot guarantee our future results, levels of activity or performance. You should not place undue reliance on these forward-looking statements because such statements speak only as of the date when made.We undertake no obligation to publicly update forward-looking statements, whether as a result of new information, future events or otherwise, except as otherwise required by law. You are advised, however, to consult any further disclosures we make on related subjects in our reports on Forms 10-Q, 8-K and 10-K furnished to the SEC. You should understand that it is not possible to predict or identify all risk factors. Consequently, you should not consider any such list to be a complete set of all potential risks or uncertainties.

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