Lineage Reports First Quarter 2021 Financial Results and Highlights Significant Progress With All Three Clinical Programs

• OpRegen^® Clinical Data Continued to Demonstrate Improvements in Dry Age-Related Macular Degeneration (AMD) with Geographic Atrophy (GA)
• Worldwide License Agreement Secured for a Cancer Immunotherapy Candidate Based on the Lineage VAC Platform
• Exclusive Agreement Secured to Evaluate a Novel System for Enhanced Delivery of OPC1
• Board of Directors Enhanced with Appointments of Healthcare Leaders, Drs. Anula Jayasuriya and Dipti Amin
• Current Cash and Marketable Securities Expected to Support Operations Well Into 2023

Lineage Cell Therapeutics, Inc. (NYSE American and TASE: LCTX), a clinical-stage biotechnology company developing allogeneic cell therapies for unmet medical needs, today reported financial and operating results for the first quarter 2021. Lineage will host a conference call today at 4:30 p.m. Eastern Time to discuss its first quarter 2021 financial results and to provide a business update.

"Lineage reported significant operational progress with each of its three clinical programs during the first quarter and beyond, delivering not only continued positive clinical results with OpRegen for the treatment of dry-AMD with GA, but also validating partnerships to support our OPC1 and VAC programs," stated Brian M. Culley, Lineage CEO. "We remain encouraged by the totality of the OpRegen clinical data presented to date, which is suggestive of clinically meaningful benefits, especially in earlier stage disease dry-AMD patients. Moreover, the strategic collaborations we announced for OPC1 and VAC reflect our commitment to a comprehensive asset management approach and add external validation to the potential of our platform to create positive outcomes for patients. Additionally, the capital we brought in during the first quarter ensures that we not only are well funded to reach additional milestones, but also provide us with optionality with respect to partnership discussions."

Some of the significant events and milestones achieved to date this year include:

- Presented a positive interim clinical update from the ongoing Phase 1/2a study of OpRegen for the treatment of dry-AMD with GA at the 2021 Association for Research in Vision and Ophthalmology Meeting: 83% of all Cohort 4 patients exhibited stable or improved Best Corrected Visual Acuity (BCVA) while visual acuity declined in the majority of untreated eyes;

- Reported that the first known finding of retinal tissue restoration in a patient who received a retinal pigment epithelium (RPE) cell transplant continues to demonstrate areas of retinal restoration as of their last assessment, approximately 3 years after treatment;

- Treated a vitelliform maculopathy patient with OpRegen under named patient compassionate use: the delivery of OpRegen RPE cells via pars plana vitrectomy (PPV) was successful, with no complications arising during the procedure and the patient remains in follow-up;

- Entered into a worldwide license agreement with Immunomic Therapeutics for an allogeneic cell-based cancer immunotherapy based on Lineage's VAC platform with a total of $2 million in upfront payments anticipated in the first year and the potential for $67 million in development and commercial milestones;

- Entered into an exclusive agreement with Neurgain Technologies to evaluate a novel delivery system for OPC1 for treatment of spinal cord injury;

- Announced the appointment of Anula Jayasuriya, M.D., Ph.D., M.B.A., a successful healthcare private equity executive and venture capitalist with extensive clinical, industry, entrepreneurial, and investment experience, to the Company's Board of Directors; and

- Announced the appointment of Dr. Dipti Amin, MBBS, a medically trained senior executive with broad expertise in medicine, pharmacology, healthcare, research, and product development, to the Company's Board of Directors.

Some of the events and milestones to look forward to during the remainder of 2021 include:

- OpRegen Program

• Presentation of additional interim data from the Phase 1/2a study, anticipated during the second quarter of 2021;
• Meeting with the U.S. Food and Drug Administration (FDA) to discuss further clinical development, anticipated in the third quarter of 2021.

- OPC1 Program

• FDA Regenerative Medicine Advanced Therapy interaction to assess plans to evaluate the Neurgain Parenchymal Spinal Delivery (PSD) system, scheduled in June 2021;
• Evaluation of the Neurgain PSD system;
• Completion of improved manufacturing process, GMP production, and comparability testing to support a late-stage clinical trial;
• FDA interaction to discuss manufacturing improvements, anticipated around the end of 2021.

- VAC Program

• Completion of enrollment in the ongoing VAC2 Phase 1 non-small cell lung cancer study, anticipated in mid 2021;
• Introduction of manufacturing enhancements to the VAC platform;
• Reporting of results from the ongoing VAC2 Phase 1 study, anticipated in the fourth quarter of 2021;
• Evaluation of opportunities for new VAC product candidates based on internally-identified or partnered tumor antigens.

- Continued evaluation of partnership opportunities and expansion of existing external collaborations and identification of new collaborations.

Balance Sheet Highlights

Cash, cash equivalents and marketable securities totaled $62.4 million as of March 31, 2021. Marketable securities of $6.2 million as of March 31, 2021 include our remaining ownership of 1,122,401 shares of common stock in OncoCyte and 169,167 shares of common stock in Hadasit Bio-Holdings Ltd.

We added to our cash position in the first quarter of 2021 with net proceeds of $19.3 million received from sales of our common shares under our ATM offering and net proceeds of $10.1 million received from selling a portion of our marketable securities.

No sales were conducted under our ATM offering from March 6, 2021 through May 12, 2021.

First Quarter Operating Results

Revenues: Lineage's revenue is generated primarily from research grants, royalties, and licensing fees. Total revenues for the three months ended March 31, 2021 were approximately $0.4 million, a decrease of $0.1 million as compared to $0.5 million for the same period in 2020. The decrease was primarily related to an approximate $0.2 million decrease in grant income, which was primarily driven by the completion of SBIR grant-related activities, offset by a $0.1 million increase in royalty-related revenues.

Operating Expenses: Operating expenses are comprised of research and development (R&D) expenses and general and administrative (G&A) expenses. Total operating expenses for the three months ended March 31, 2021 were $7.3 million, a decrease of $0.6 million as compared to $7.9 million for the same period in 2020.

R&D Expenses: R&D expenses for the three months ended March 31, 2021 were $3.4 million, an increase of approximately $0.1 million as compared to $3.3 million for the same period in 2020. The overall increase was primarily related to increases of $0.5 million and $0.4 million in VAC and OPC1 program expenses, respectively, and a net decrease of $0.8 million in OpRegen and other ophthalmic application expenses, primarily driven by fluctuations in the timing of manufacturing activities.

G&A Expenses: G&A expenses for the three months ended March 31, 2021 were $3.9 million, a decrease of approximately $0.6 million as compared to $4.5 million for the same period in 2020. The decrease was primarily attributable to decreases of $0.4 million in expenses related to our merger with Asterias Biotherapeutics, Inc., $0.2 million in rent expense and utilities, $0.1 million in legal and patent expenses, and $0.1 million in compensation expense, offset by a $0.2 million increase in investor and public relations expenses.

Loss from Operations: Loss from operations for the three months ended March 31, 2021 was approximately $7.0 million, a decrease of $0.4 million as compared to $7.4 million for the same period in 2020.

Other Income/(Expenses), Net: Other income/(expenses), net for the three months ended March 31, 2021 reflected other income, net of $5.6 million, compared to other expense, net of ($1.0) million for the same period in 2020. The variance was primarily related to the gain on sale of marketable securities and changes in the value of marketable equity securities for the applicable periods, as well as exchange rate fluctuations related to Lineage's international subsidiaries. The increase in the value of Lineage's OncoCyte shares and subsequent sales during the first quarter 2021 contributed significantly to the overall net increase in other income.

Net loss attributable to Lineage: The net loss attributable to Lineage for the three months ended March 31, 2021 was $1.4 million, or $0.01 per share (basic and diluted), compared to a net loss attributable to Lineage of $8.4 million, or $0.06 per share (basic and diluted), for the same period in 2020.

Conference Call and Webcast

Lineage will host a conference call and webcast today, at 4:30 p.m. Eastern Time/1:30 p.m. Pacific Time to discuss its first quarter 2021 financial results and to provide a business update. Interested parties may access the conference call by dialing (866) 888-8633 from the U.S. and Canada and (636) 812-6629 from elsewhere outside the U.S. and Canada and should request the "Lineage Cell Therapeutics Call". A live webcast of the conference call will be available online in the Investors section of Lineage's website. A replay of the webcast will be available on Lineage's website for 30 days and a telephone replay will be available through May 21, 2021, by dialing (855) 859-2056 from the U.S. and Canada and (404) 537-3406 from elsewhere outside the U.S. and Canada and entering conference ID number 4996965.

About Lineage Cell Therapeutics, Inc.

Lineage Cell Therapeutics is a clinical-stage biotechnology company developing novel cell therapies for unmet medical needs. Lineage's programs are based on its robust proprietary cell-based therapy platform and associated in-house development and manufacturing capabilities. With this platform Lineage develops and manufactures specialized, terminally differentiated human cells from its pluripotent and progenitor cell starting materials. These differentiated cells are developed to either replace or support cells that are dysfunctional or absent due to degenerative disease or traumatic injury or administered as a means of helping the body mount an effective immune response to cancer. Lineage's three allogeneic ("off-the-shelf") clinical programs are in markets with billion dollar opportunities: (i) OpRegen^®, an investigational retinal pigment epithelium transplant therapy in Phase 1/2a development for the treatment of dry age-related macular degeneration, a leading cause of blindness in the developed world; (ii) OPC1, an investigational oligodendrocyte progenitor cell therapy in Phase 1/2a development for the treatment of acute spinal cord injuries; and (iii) VAC, an allogeneic dendritic cell therapy platform for immuno-oncology and infectious disease, with investigational immunotherapy VAC2 currently in clinical development for the treatment of non-small cell lung cancer. For more information, please visit www.lineagecell.com or follow the Company on Twitter @LineageCell.

Forward-Looking Statements

Lineage cautions you that all statements, other than statements of historical facts, contained in this press release, are forward-looking statements. Forward-looking statements, in some cases, can be identified by terms such as "believe," "may," "will," "estimate," "continue," "anticipate," "design," "intend," "expect," "could," "plan," "potential," "predict," "seek," "should," "would," "contemplate," project," "target," "tend to," "look forward to" or the negative version of these words and similar expressions. Such statements include, but are not limited to, statements relating to Lineage's anticipated funding runway, data presentations, clinical trial advancement, meetings and interactions with the FDA, evaluation of the Neurgain PSD system, manufacturing improvements, enrollment in the VAC2 Phase 1 study, announcement of clinical study results, payments under the license agreement with Immunomic Therapeutics, partnership evaluations and opportunities, and market opportunity and potential for its product candidates. Forward-looking statements involve known and unknown risks, uncertainties and other factors that may cause Lineage's actual results, performance or achievements to be materially different from future results, performance or achievements expressed or implied by the forward-looking statements in this press release, including risks and uncertainties inherent in Lineage's business and other risks in Lineage's filings with the Securities and Exchange Commission (the SEC). Lineage's forward-looking statements are based upon its current expectations and involve assumptions that may never materialize or may prove to be incorrect. All forward-looking statements are expressly qualified in their entirety by these cautionary statements. Further information regarding these and other risks is included under the heading "Risk Factors" in Lineage's periodic reports with the SEC, including Lineage's most recent Annual Report on Form 10-K filed with the SEC and Quarterly Report on Form 10-Q and its other reports, which are available from the SEC's website. You are cautioned not to place undue reliance on forward-looking statements, which speak only as of the date on which they were made. Lineage undertakes no obligation to update such statements to reflect events that occur or circumstances that exist after the date on which they were made, except as required by law.

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