iosBio appoints Dr. Craig Laferrière as Chief Development Officer

Burgess Hill, UK, 19 May 2022 — iosBio (‘the Company’), a UK-based biotechnology company developing next-generation vaccines that can be administered orally, today announces the appointment of Dr. Craig Laferrière as Chief Development Officer, effective immediately. In his role, Craig will lead the development and execution of iosBio’s pipeline strategy, as the Company moves into its next stage of growth.

Craig is a highly experienced medical adviser, having worked for more than 25 years in vaccine design, manufacturing and licensing. He joins iosBio from CANVAX, Novateur Ventures Inc., an international vaccine consulting business, where he worked with a number of clients, including BioVac in Cape Town optimizing the manufacture of a Haemophilus influenzae type b (Hib) conjugate vaccine now licensed in Indonesia under the trade name Pentabio™.

Previously, Craig held the role of Medical Adviser on the Vaccine Leadership Team at Pfizer Canada. During this time, he led and implemented vaccine deployment strategies and provided in-house scientific expertise to Pfizer and other key stakeholders, including physicians, key opinion leaders and regulatory and advisory committees. Craig previously worked for GlaxoSmithKline first as a scientist and later as Therapy Area Leader in Canada, where he led the pneumococcal conjugate vaccine project from pre-clinical to successful proof-of-concept in humans. He has also worked for the National Research Council, Institute of Biological Sciences, and the National Laboratory for Immunology.

Craig holds a PhD in Organic Chemistry from the University of Ottawa and a BSC Hons Degree in Chemistry from Carleton University.

Executive Chairman of iosBio, Wayne Channon said: “We are delighted to welcome Craig to the iosBio team. His breadth of experience in leading vaccine programmes from design and manufacturing through to licensing will be critical as we undertake our next phase of growth.”

Chief Development Officer Dr. Craig Laferrière, commented: “I am thrilled to be joining iosBio, whose OraPro™ oral vaccine technology has the potential to transform the way the world makes and takes vaccines. Vaccines have saved tens of millions of lives, but there remain significant global challenges due to the current limitations of traditional vaccines. I look forward to working with the iosBio team to build the Company’s growing pipeline of innovative orally administered vaccines to address these challenges and provide safe and effective vaccines that will protect people from viruses in the future.”

Ends

For further information please contact:

Consilium Strategic Communications
David Daley, Melissa Gardiner, Davide Salvi
IosBio@consilium-comms.com
Tel: +44 (0) 20 3709 5700

NOTES FOR EDITORS

About iosBio

iosBio is a UK based biotechnology company developing next generation vaccines that can be administered orally.

The Company’s proprietary OraPro™ thermal stabilization technology enables the oral administration of thermally stable, non-replicating viral vectors that can be delivered sublingually via the gastrointestinal (GI) tract and other routes. These vaccine vectors are engineered to withstand temperatures of up to 50 degrees and the hostile conditions in the stomach without loss of efficacy and providing long term product stability at ambient temperatures.

iosBio is developing vaccines designed to stimulate mucosal, systemic and T cell immune responses, providing robust immunity to a number of infectious diseases including COVID-19, influenza, Zika and Nipah.

iosBio is headquartered in Burgess Hill, UK. For more information visit: iosbio.com

iosBio appoints Ben Warriner as Chief Financial Officer

Burgess Hill, UK, 6 April 2022 — iosBio (‘the Company’), a UK-based biotechnology company developing next-generation vaccines that can be administered orally, is pleased to announce the appointment of Ben Warriner as Chief Financial Officer, effective 6 April 2022.

Ben is a highly experienced finance professional with more than a decade of international leadership experience working within the healthcare sector. He joins iosBio from Freeline Therapeutics, a biotechnology company focused on developing curative gene therapies for chronic systemic diseases. As VP of Finance, Ben successfully managed the company’s $159 million listing on NASDAQ in August 2020. He also served as Company Secretary, where he was responsible for day-to-day financial and administrative operations across the UK, US, Ireland and Germany.

Previously, Ben served in a number of senior financial roles at EUSA Pharma, a private equity backed global pharmaceutical company. During this time, he was responsible for the finance operations across the group, including working on a new product launch. Ben has previously worked for Jazz Pharmaceuticals PLC, Vantis PLC, T-Mobile and Deloitte. He holds a BSC Hons Degree in Economics from Loughborough University.

Wayne Channon, Chairman of iosBio, said: “I am delighted to welcome Ben to the iosBio team. His broad knowledge and expertise across the healthcare and financial sector will be invaluable to iosBio as we continue to advance the Company’s pipeline of safe and effective oral vaccines for infectious diseases.”

Ben Warriner, Chief Financial Officer, commented:iosBio has the potential to transform the way we make and take vaccines and I am thrilled to be joining the Company at such an exciting time. I look forward to supporting Wayne and the rest of the iosBio team to help drive the Company’s growth as it works to deliver the future of immunization.”

Ends

 

For further information please contact:
Consilium Strategic Communications
David Daley, Melissa Gardiner, Davide Salvi
IosBio@consilium-comms.com
Tel: +44 (0) 20 3709 5700

 

NOTES FOR EDITORS

About iosBio

iosBio is a UK based biotechnology company developing next generation vaccines that can be administered orally.

The Company’s proprietary OraPro™ thermal stabilization technology enables the oral administration of thermally stable, non-replicating viral vectors that can be delivered sublingually via the gastrointestinal (GI) tract and other routes. These vaccine vectors are engineered to withstand temperatures of up to 50 degrees and the hostile conditions in the stomach without loss of efficacy and providing long term product stability at ambient temperatures.

iosBio is developing vaccines designed to stimulate mucosal, systemic and T cell immune responses, providing robust immunity to a number of infectious diseases including COVID-19, influenza and Zika.

iosBio is headquartered in Burgess Hill, UK. For more information visit: iosbio.com

 

iosBio receives UK grant to develop oral vaccine against Nipah virus

Zoonotic virus often cited as future pandemic threat and requiring urgent R&D action
iosBio’s oral vaccine technology offers potential breakthrough against current challenges of vaccine access globally

Burgess Hill, UK, 23 February 2022 — iosBio (‘the Company’), a UK-based biotechnology company developing next-generation vaccines that can be administered orally, has been awarded a £288,000 grant from the Department of Health and Social Care’s UK Vaccine Network programme, delivered by Innovate UK, to support the development of an oral vaccine candidate against Nipah virus (NiV) using the Company’s proprietary OraPro™ thermal stabilization technology.

The award is one of 22 successful research projects from a new £10 million research competition funded by UK government, through UK Aid, to develop new vaccines and technologies to tackle diseases with epidemic potential in low- and middle-income countries to ensure that the UK remains at the forefront of the global fight against future infectious disease outbreaks. Working with Innovate UK, this £10 million UK Vaccine Network competition is supporting clinical development of candidate vaccines, their manufacturing and delivery processes and technologies, for use in low and middle-income countries (LMICs).

NiV infection is a zoonotic illness transmitted to people from animals, through contaminated food or directly from person-to-person. It rapidly attacks the respiratory and central nervous systems, with symptoms including fever, vomiting and encephalitis (inflammation of the brain). The case fatality rate is between 40 and 75%[1].

First identified in Malaysia in 1998, outbreaks occur almost annually in parts of Asia, primarily Bangladesh and India, and while these have tended to be small NiV is often cited as a future pandemic threat and is one of the pathogens in the World Health Organization’s R&D Blueprint list of epidemic threats needing urgent R&D action[2]. Despite its notable pandemic potential, no safe and effective vaccines and therapeutics have been approved.

iosBio’s NiV oral vaccine candidate is being developed using a harmless, non-replicating adenovirus as the viral vector, genetically engineered to carry some of the genetic material from the pathogen. When administered, the viral vector vaccine would cause the body’s own cells to manufacture proteins from the NiV pathogen, provoking an immune response and stimulating production of antibodies and T cells. This means that when the body is exposed to the real pathogen, it already has the tools it needs to combat infection.

The Company’s proprietary OraPro™ platform technology engineers the vector to be thermally-stable, capable of withstanding temperatures of up to 50°C and allowing it to pass through the hostile conditions in the stomach without loss of efficacy. This ability to withstand high temperatures also provides long-term product stability and the removal of refrigeration requirements during manufacturing, shipping and storage – a potential opportunity to break through the current challenges of vaccine access globally, particularly in LMICs where temperature control is challenging and expensive.

Executive Chairman of iosBio, Wayne Channon said: “We are proud that Innovate UK and the UK government have, through their thorough review process, chosen to invest in our oral vaccine research and recognise its potential against threats from emerging infectious diseases. While the world continues to battle COVID-19, new threats are still emerging, and we must prepare for the next pandemic. By developing safe and effective oral vaccines that can be administered without the need for complex cold chain storage, health professionals or vaccination centres, we would have the opportunity to prevent or halt local outbreaks, including in some of the hardest to reach areas, before they present a pandemic risk.”

Ends

 

For further information please contact:
Consilium Strategic Communications
David Daley, Davide Salvi, Melissa Gardiner
IosBio@consilium-comms.com
Tel: +44 (0) 20 3709 5700

 

NOTES FOR EDITORS

About iosBio

iosBio is a UK based biotechnology company developing next generation vaccines that can be administered orally.

The Company’s proprietary OraPro™ thermal stabilization technology enables the oral administration of thermally stable, non-replicating viral vectors that can be delivered sublingually via the gastrointestinal (GI) tract and other routes. These vaccine vectors are engineered to withstand temperatures of up to 50 degrees and the hostile conditions in the stomach without loss of efficacy and providing long term product stability at ambient temperatures.

iosBio is developing vaccines designed to stimulate mucosal, systemic and T cell immune responses, providing robust immunity to a number of infectious diseases including COVID-19, influenza and Zika.

iosBio is headquartered in Burgess Hill, UK. For more information visit: iosbio.com

About the UK Vaccine Network

The Department for Health and Social Care (DHSC) is the UK Government department which is responsible for helping people to live more independent, healthier lives for longer. This investment is part of the UK Vaccine Network (UKVN). UKVN was established to provide funding to support the development of promising vaccines and vaccine technologies that will help combat infectious diseases that have epidemic potential in low and middle-income countries (LMICs). UKVN is a £120m UK Aid investment, which means all projects funded must support research primarily and directly for the benefit of people in low- and middle-income countries (LMICs).

[1] https://www.who.int/news-room/fact-sheets/detail/nipah-virus

[2] https://www.who.int/teams/blueprint/nipah

iosBio appoints Patricia Londono-Hayes as Chief

Oral vaccines and biotherapeutics company strengthens senior leadership team with new role to drive priority development programmes Burgess Hill, UK, 14 June 2021—iosBio (‘the Company’), a UK-based biotechnology company developing next-generation vaccines that can be administered orally, today announces the appointment of Patricia Londono-Hayes, PhD, as Chief Development Officer.

With more than 20 years of experience in the pharmaceutical and biotechnology sector, Patricia is a leader in vaccines and biologics product development. She brings extensive experience in the progression of vaccine candidates from initial concept into first-in-human testing, advancement of clinical development and licensing.

In her role, Patricia will lead the development and execution of iosBio’s pipeline strategy, as the Company moves into its next stage of growth. In January 2021 iosBio signed an exclusive worldwide licensing agreement granting ImmunityBio rights to its OraPro™ vaccine platform technology for the oral delivery of ImmunityBio’s second-generation human Adeno (hAd5) COVID-19 vaccine candidate. iosBio’s second priority programme, OraPro-Flu – a thermally stable, orally-delivered, quadrivalent seasonal influenza vaccine – is currently in preclinical studies and expected to enter the clinic later this year.

Across her career, Patricia has directed global programmes, teams, and partnerships at scientific, strategic, and operational levels, contributing to the development and licensing of vaccines spanning a broad range of indications including influenza and a variety of respiratory, gastro-intestinal, genitourinary, and nosocomial infections.

Patricia joins iosBio from Sanofi Pasteur, where she held positions of increasing responsibility, most recently as Head of External R&D Initiatives and Scientific Affairs, Europe, where she led the strategy and implementation of external R&D public‐private partnerships and alliances. During her tenure, she spearheaded multi million Euro investments in R&D partnerships between the company and other vaccine manufacturers, leading academic institutions, the EU and the Gates Foundation. Prior to that, she was Head of Global Preclinical Research & Development Department and Leader of the Universal Influenza Vaccine Project at the company, overseeing, translational, preclinical, and clinical pharmacology research. Before joining Sanofi Pasteur, Patricia worked at vaccine company Acambis, where she founded and directed the Immunology Research Department and initiated research programs in oral vaccines.

She gained her PhD in Biochemistry and Immunology from Imperial College London and holds an MSc in Molecular Biology and Genetic Manipulation and a BSc in Microbiology from the University of Sussex and University of Los Andes, respectively.

Executive Chairman of iosBio, Wayne Channon said: “With her impressive track record in vaccine development, I am delighted to welcome Patricia to iosBio. Her breadth of experience in leading vaccines programmes from idea through to clinical development will be critical as we pursue our mission to lead the way in next generation, oral vaccines.”

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Patricia Londono-Hayes commented: “I am thrilled to be joining iosBio at such an exciting stage, with the Company’s OraPro™ vaccine platform technology being investigated in trials of what could be the first oral COVID-19 vaccine. iosBio’s science has the potential to truly transform vaccine development and to overcome the global challenges of traditional vaccines. I am delighted to be joining such an experienced and innovative team and look forward to working together on IosBio’s vision to bring orally administered, thermally stable vaccines to people around the world.”

Ends

For further information please contact:

Consilium Strategic Communications

Mary-Jane Elliott, Melissa Gardiner, David Daley

IosBio@consilium-comms.com

Tel: +44 (0) 20 3709 5700

NOTES FOR EDITORS

About iosBio

iosBio is a UK based biotechnology company developing next generation vaccines that can be administered orally.

The Company’s proprietary OraPro™ thermal stabilization technology enables the oral administration of thermally stable, non-replicating viral vectors that can be delivered sublingually via the gastrointestinal (GI) tract and other routes. These vaccine vectors are engineered to withstand temperatures of up to 50 degrees and the hostile conditions in the stomach without loss of efficacy and providing long term product stability at ambient temperatures. iosBio is developing vaccines designed to stimulate mucosal, systemic and T cell immune responses, providing robust immunity to a number of infectious diseases including COVID-19, Zika and influenza.

In January 2021 iosBio announced an exclusive worldwide licensing agreement with ImmunityBio, Inc. a US-based, privately held clinical-stage immunotherapy company, for iosBio’s OraPro™ vaccine platform technology currently being investigated in a Phase Ib trial of ImmunityBio’s secondgeneration human Adeno (hAd5) COVID-19 vaccine candidate.

iosBio is headquartered in Burgess Hill, UK. For more information visit: iosbio.com

Development Officer

 

iosBio signs exclusive worldwide licensing agreement

iosBio signs exclusive worldwide licensing agreement granting ImmunityBio rights to OraPro™ oral vaccine platform technology for COVID-19

  • iosBio licenses its OraProTM thermal stabilization technology to ImmunityBio for oral delivery of ImmunityBio’s second generation hAd5 vaccine candidate to protect against COVID-19 
  • ImmunityBio’s oral T cell vaccine candidate could potentially address mutations in the spike (S) protein

Burgess Hill, UK, January 12, 2021—iosBio (‘the Company’),a UK-based biotechnology company developing next-generation vaccines that can be administered orally, today announced an exclusive worldwide licensing agreement with ImmunityBio, Inc. a US-based, privately-held clinical-stage immunotherapy company, for iosBio’s OraPro™ vaccine platform technology currently being investigated in trials of ImmunityBio’s second-generation human Adeno (hAd5) COVID-19 vaccine candidate. 

OraPro™ is iosBio’s patented oral delivery vaccine platform technology that enables oral administration of thermally-stable, viral vector vaccines. These vaccine vectors are engineered to withstand temperatures of up to 50°C, allowing them to pass through the hostile conditions in the stomach without loss of efficacy and providing long-term product stability at ambient temperatures. Oral administration delivers the vaccine directly to mucosal associated lymphoid tissue (MALT), generating mucosal, systemic and T-cell immune responses. 

Under the terms of the licensing agreement, iosBio has granted ImmunityBio exclusive rights to utilize its OraPro™ platform technology for the oral delivery of ImmunityBio’s human Adeno (hAd5) COVID-19 vaccine candidate. 

iosBio will be eligible to receive royalties on net worldwide sales of the approved oral vaccine. 

In a BARDA-sponsored study of vaccinated non-human primates, subcutaneous and room temperature oral formulations of ImmunityBio’s vaccine candidate inhibited SARS-CoV-2 virus replication to undetectable levels and cleared infection within days in 100% of vaccinated animals (10 of 10). The vaccine candidate, which delivers both outer spike (S) and inner nucleocapsid (N) antigens, induced T cells and antibodies leading to reduction of SARS-CoV-2 viruses in both lungs and nasal passages within seven days. The oral capsule formulation of the vaccine candidate was effective at room temperature in the non-human primate study suggesting that it may not require the cold chain logistics that can impede global distribution.

Pending ImmunityBio’s discussions with the US Food and Drug Administration (FDA), the oral vaccine will enter Phase I trials as a prime and boost, and will be explored to provide a boost to subcutaneous vaccinations. Twenty participants have already completed testing in ImmunityBio’s Phase I trial at Hoag Hospital Newport Beach, California, which evaluated both low and high doses of subcutaneous hAd5, with zero grade 3/4 adverse events reported.

Chairman of iosBio, Wayne Channon, said: “We are delighted to be able to support ImmunityBio with the oral delivery of its second-generation COVID-19 vaccine candidate, through the licensing of our OraPro thermal stabilization technology. This technology is key to developing vaccines that can be administered orally without loss of efficacy and has the potential to truly transform vaccine development.

“Oral vaccines have the potential to overcome global challenges of traditional vaccines, many of which need to be stored and transported at freezing temperatures. Oral vaccines are more cost effective to produce and can be easily stored and transported around the world. They also have the potential to be self-administered, reducing health systems’ dependency on trained health professionals to run immunisation programmes and present a future where people could have vaccines delivered straight to their door.”

Patrick Soon-Shiong, M.D., Chairman and CEO of ImmunityBio, said: “As we see multiple mutations in the SARS-CoV-2 spike protein, there is an urgent need for a vaccine that not only offers immediate protection but also activates T cells to clear the virus. When multiple mutations occur at the receptor-binding domain of the spike protein, it renders antibodies ineffective. Our next-generation vaccine design drives both antibody and T cells to S and N protein, and so could potentially serve as a universal boost to current vaccines that focus only on the monovalent S protein, as well as address future mutations of the S protein. 

“It is also critical to develop a room-temperature, stable oral formulation of the vaccine, one that will provide mucosal immunity. We’re doing that with iosBio’s unique oral vaccine delivery platform technology that has the potential to transform the way people take vaccines and addresses the challenges of storage and global distribution of vaccines. In our BARDA-sponsored, non-human primate challenge study, administering the oral formulation as a boost achieved 100 percent viral protection against a challenge and induced both memory B cells and Th1-dominant T cells, which cleared the virus. We are now moving urgently through clinical development in the US and globally.”

Ends

For further information please contact:

Consilium Strategic Communications 

Mary-Jane Elliott, Melissa Gardiner, David Daley,

IosBio@consilium-comms.com

Tel: +44 (0) 20 3709 5700 

NOTES FOR EDITORS

About iosBio

iosBio is a UK based biotechnology company developing next generation vaccines that can be administered orally. 

The Company’s proprietary OraPro™ thermal stabilization technology enables the oral administration of thermally stable, non-replicating viral vectors that can be delivered sublingually via the gastrointestinal (GI) tract and other routes. These vaccine vectors are engineered to withstand temperatures of up to 50 degrees, allowing them to pass through the hostile conditions in the stomach without loss of efficacy and providing long term product stability at ambient temperatures. 

iosBio is developing vaccines designed to stimulate mucosal, systemic and T cell immune responses, providing robust immunity to a number of infectious diseases including COVID-19, Zika and influenza.

iosBio is headquartered in Burgess Hill, UK. For more information visit: iosbio.com

About ImmunityBio 

ImmunityBio, Inc. is a late-clinical-stage immunotherapy company developing next-generation therapies that drive immunogenic mechanisms for defeating cancers and infectious diseases. The company’s immunotherapy platform activates both the innate (natural killer cell and macrophage) and adaptive (T cell) immune systems to create long-term “immunological memory.” This novel approach is designed to eliminate the need for high-dose chemotherapy, improve upon the outcomes of current CAR T-cell therapies, and extend beyond checkpoint inhibitors.

ImmunityBio’s platform is based on the foundation of three separate modalities: antibody cytokine fusion proteins, synthetic immunomodulators, and second-generation human adenovirus (hAd5) vaccine technologies.

Anktiva™ (ImmunityBio’s lead cytokine infusion protein) is a novel interleukin-15 (IL-15) superagonist complex and has received Breakthrough Therapy and Fast Track Designations from the U.S. Food and Drug Administration (FDA) for BCG-unresponsive CIS non-muscle invasive bladder cancer (NMIBC). The company is also in Phase 2 or 3 trials for indications such as first- and second-line lung cancer, triple-negative breast cancer, metastatic pancreatic cancer, recurrent glioblastoma, and soft tissue sarcoma in combination with the company’s synthetic immune modulator (aldoxorubicin).

ImmunityBio is also developing therapies, including vaccines, for the prevention and treatment of HIV, influenza, and the coronavirus SARS-CoV-2 with its second-generation human adenovirus (hAd5) vaccine technologies.

NantKwest Transaction

As previously announced, on December 21, 2020, ImmunityBio entered into an agreement to combine in a stock-for-stock transaction with NantKwest, Inc. (NASDAQ: NK). The combination, which is expected to close in the first half of 2021, would create a leading immunotherapy and cell therapy company focused on oncology and infectious disease.

Sydney Morning Herald – Game-changing COVID-19 vaccine pill pursued by small British firm

LinkedIn

In an interview with @Bevan Shields at the @Sydney Morning Herald, our Chairman @Wayne Channon discussed the potential of oral vaccines to revolutionize the fight against infectious diseases like COVID-19, providing a more targeted immune response and overcoming the need for storage and transportation at freezing temperatures.

Read the full article: [Link]

#COVID19 #OralVaccines

Twitter

Great to be featured in the @smh, discussing how oral vaccines can revolutionize the fight against COVID-19, overcoming the need for cold chain storage and providing a more targeted immune response.

Read the full article: [LINK]

#COVID19 #OralVaccines

ImmunityBio announcement of FDA Phase 1 Study using iosBio’s OraPro thermal stabilization technology

ImmunityBio and NantKwest Announce FDA Authorization to Study hAd5 T-Cell COVID- 19 Vaccine for Combination of Subcutaneous, Oral and Sublingual Boost to Induce T- Cell, Mucosal, and Antibody Immunity

  • FDA authorized the expansion of the active Phase 1 COVID-19 vaccine trial and a second trial to test a novel combination of T-cell-based hAd5 subcutaneous prime vaccine with a room- temperature oral or sublingual boost, to induce comprehensive immune protection through
    CD4+ and CD8+ T cells to both Spike (S) and Nucleocapsid (N) antigens, as well as generate systemic and mucosal antibodies
  • The first COVID-19 trials conducted to deliver both S and N proteins via multiple routes (skin, gut, or under the tongue) to activate the entire immune system and drive T-cell and B-cell memory, which are required for long-term immune protection
  • Oral, room-temperature boost that stimulates immunity to both S and N proteins could potentially serve as a universal boost to other S-based vaccines while also targeting escape mutants
  • Testing of novel combination of oral boost to subcutaneous prime is based on positive NIH/BARDA-sponsored non-human primate data showing potent T-cell and antibody response to hAd5 after oral boost, with rapid inhibition of virus replication to undetectable levels following SARS-CoV-2 challengeCULVER CITY, Calif., February 11, 2021 – ImmunityBio, Inc., a privately-held immunotherapy company, and NantKwest, Inc. (NASDAQ: NK), a clinical-stage, natural killer cell-based therapeutics company, today announced they have received FDA authorization to expand Phase I testing of a bivalent hAd5 T-cell COVID-19 vaccine. The FDA authorized the expansion of a currently active multi- cohort trial of the subcutaneous version of the vaccine in order to study the addition of sublingual boosts. The FDA also authorized a second Phase I study that will examine the addition of an oral boost to the subcutaneous prime administration. As a result, the companies will enroll another 105 participants in the U.S. trials of their vaccine candidate, which is unique in targeting both the spike (S) and nucleocapsid (N) proteins of the SARS-CoV-2 virus.The expectations of inducing protective immune responses in healthy volunteers – with this novel combination of an oral boost with a subcutaneous prime – are based on the positive findings reported in the NIH/BARDA-sponsored Non-Human Primate (NHP) study. This recent data showed that when administered with an oral boost, the bivalent vaccine resulted in potent stimulation of S- and N-specific T cells with potent antibody release from memory B cells following viral challenge. Additionally, activation of the full immune system by S and N proteins resulted in complete viral clearance of SARS- CoV-2 in lung and nasal passages following the challenge. On the basis of these findings, ImmunityBio has expanded the current Phase 1 study of subcutaneous prime with oral or sublingual boost to explore the potential of this second-generation vaccine to reduce disease and transmission of the virus.

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The oral trial is a new study (NCT04732468) and the sublingual trial is the cohort C expansion to the Phase 1 subcutaneous trial (NCT04591717), which was initiated last Fall. Both oral and sublingual trials are anticipated to begin this month and will be conducted at two sites in California. Based on the findings of these trials involving over 100 participants, the optimal combination of route of administration and dose will be determined and entered into the Phase 2 / 3 design.

“The NHP study findings reinforce our hypothesis that a T-cell-based vaccine could be protective, not only in preventing mild, moderate, and severe disease, but also in potentially limiting transmission of the virus,” said Patrick Soon-Shiong, MD, Chairman and CEO of ImmunityBio. “We believe that the key to creating long-term immunity to the SARS-CoV-2 virus and overcoming the variants that are rapidly developing around the world is to create a vaccine that activates not only antibodies but also memory B and T cells to multiple antigens. Furthermore, room-temperature stable formulations for oral delivery have the potential to solve the cold-chain challenges of distribution and the ability to generate mucosal IgA antibody barriers to the virus in the upper respiratory tract where it first enters the body.”

One Vaccine, Two Trials, Three Routes of Immune Protection

The first two cohorts of the Phase Ib, open label, dose-ranging study (NCT04591717) of the
vaccine received two different dose levels (.5 and 1ml). Participants received two subcutaneous injections 21 days apart. No grade three or four AEs and no SAEs were observed at either dose level and, in the intermediate (1ml) dose group, immunogenicity was observed as early as 14 days after the prime. An additional group of 40 subjects will be enrolled to evaluate safety, reactogenicity, and immunogenicity of the combination of hAd5 in four different cohorts receiving sublingual and subcutaneous formulations to select an optimal combination dose for future studies.

The second Phase 1b trial (NCT04732468) is designed to assess the safety, reactogenicity, and immunogenicity of the combination of hAd5 in oral capsule and subcutaneous formulations; and to select an optimal combination dose for future studies. Up to 65 subjects will be enrolled in the four- cohort study, which is anticipated to begin in Q1.

About the T-Cell-Based Vaccine Candidate

Developed by ImmunityBio and manufactured by NantKwest, this second generation hAd5
vectored vaccine is unique in targeting both spike (S) and nucleocapsid (N) SARS-CoV-2
proteins to generate B and T cell memory to these antigens and long-term immunity to the virus. Most of the COVID-19 vaccines approved by the FDA or in late-stage clinical trials deliver only the spike protein, which has already mutated several times. Another unique characteristic of the hAd5 design is its use of a second-generation hAd5 platform that was developed to elicit anti-SARS-CoV-2 immune responses even in Ad-immune individuals, meaning subjects can receive the vaccine multiple times, if necessary. The stimulation of anti-hAd5 immune responses is attenuated with the second-generation platform in comparison with the first-generation platforms, due to additional genetic deletions. The hAd5

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room temperature-stable oral capsules were developed in partnership with UK-based biotechnology company iosBio.

Phase I trials have been initiated in the U.S. and recruitment is set to begin in February in Cape Town, South Africa for a trial (NCT04710303) of subcutaneous administration to be followed
by additional trials using sublingual delivery and room temperature-stable oral capsules.

NantKwest Transaction

As previously announced, on December 21, 2020, ImmunityBio entered into an agreement to combine in a stock-for-stock transaction with NantKwest (NASDAQ: NK). The combination, which is expected to close in the first half of 2021, will create a leading immunotherapy and cell therapy company focused on oncology and infectious disease.

About ImmunityBio

ImmunityBio, Inc. is a late-clinical-stage immunotherapy company developing next-generation therapies that drive immunogenic mechanisms for defeating cancers and infectious diseases. The company’s immunotherapy platform activates both the innate (natural killer cell and macrophage) and adaptive (T- cell) immune systems to create long-term “immunological memory.” This novel approach is designed to eliminate the need for high-dose chemotherapy, improve upon the outcomes of current CAR T-cell therapies, and extend beyond checkpoint inhibitors.

ImmunityBio’s platform is based on the foundation of three separate modalities: antibody cytokine fusion proteins, synthetic immunomodulators, and second-generation human adenovirus (hAd5) vaccine technologies.

AnktivaTM (ImmunityBio’s lead cytokine infusion protein) is a novel interleukin-15 (IL-15) superagonist complex and has received Breakthrough Therapy and Fast Track Designations from the U.S. Food and Drug Administration (FDA) for BCG-unresponsive CIS non-muscle invasive bladder cancer (NMIBC). The company is also in Phase 2 or 3 trials for indications such as first- and second-line lung cancer, triple-negative breast cancer, metastatic pancreatic cancer, recurrent glioblastoma, and soft tissue sarcoma in combination with the company’s synthetic immune modulator (Aldoxorubicin).

ImmunityBio is also developing therapies, including vaccines, for the prevention and treatment of HIV, influenza, and the coronavirus SARS-CoV-2 with its second-generation human adenovirus (hAd5) vaccine technologies.

About NantKwest

NantKwest (NASDAQ: NK) is an innovative, clinical-stage, immunotherapy company focused on harnessing the power of the innate immune system to treat cancer and infectious diseases. NantKwest is the leading producer of clinical dose forms of off-the-shelf natural killer (NK) cell therapies. The

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activated NK cell platform is designed to destroy cancer and virally-infected cells. The safety of these optimized, activated NK cells—as well as their activity against a broad range of cancers—has been tested in phase I clinical trials in Canada and Europe, as well as in multiple phase I and II clinical trials in the United States. By leveraging an integrated and extensive genomics and transcriptomics discovery and development engine, together with a pipeline of multiple, clinical-stage, immuno- oncology programs, NantKwest’s goal is to transform medicine by bringing novel NK cell-based therapies to routine clinical care. NantKwest is a member of the NantWorks ecosystem of companies. For more information, please visit www.nantkwest.com.

Forward-Looking Statements

This communication contains forward-looking statements relating to the proposed transaction involving NantKwest, Inc. (“NantKwest”) and ImmunityBio, Inc. (“ImmunityBio”), including financial estimates and statements as to the expected timing, completion and effects of the proposed transaction and statements relating to NantKwest and ImmunityBio’s future success in improving the treatment of various diseases and illnesses, including, but not limited to COVID-19 and cancer. Statements in this communication that are not statements of historical fact are considered forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended (the “Securities Act”), and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), which are usually identified by the use of words such as “anticipates,” “believes,” “continues”, “could”, “estimates,” “expects,” “intends,” “may,” “plans,” “potential”, “predicts”, “projects,” “seeks,” “should,” “will,” and variations of such words or similar expressions. These forward-looking statements are neither forecasts, promises nor guarantees, and are based on the current beliefs of NantKwest’s management and ImmunityBio’s management as well as assumptions made by and information currently available to NantKwest and ImmunityBio. Such statements reflect the current views of NantKwest and ImmunityBio with respect to future events and are subject to known and unknown risks, including business, regulatory, economic and competitive risks, uncertainties, contingencies and assumptions about NantKwest and ImmunityBio, including, without limitation, (i) inability to complete the proposed transaction because, among other reasons, conditions to the closing of the proposed transaction may not be satisfied or waived, (ii) uncertainty as to the timing of completion of the proposed transaction, (iii) potential adverse effects or changes to relationships with employees, suppliers or other parties resulting from the announcement or completion of the proposed transaction, (iv) the outcome of any legal proceedings that may be instituted against the parties and others related to the potential transaction between NantKwest and ImmunityBio, (v) possible disruptions from the proposed transaction that could harm NantKwest’s or ImmunityBio’s respective business, including current plans and operations, (vi) unexpected costs, charges or expenses resulting from the proposed transaction, (vii) uncertainty of the expected financial performance of the combined company following completion of the proposed transaction, including the possibility that the expected synergies and value creation from the proposed transaction will not be realized or will not be realized within the expected time period, (viii) the ability of each of NantKwest or ImmunityBio to continue its planned preclinical and clinical development of its respective development programs, and the timing and success of any such continued preclinical and clinical development and planned regulatory submissions, (ix)

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inability to retain and hire key personnel, and (x) the unknown future impact of the COVID-19 pandemic delay on certain clinical trial milestones and/or NantKwest’s or ImmunityBio’s operations or operating expenses. More details about these and other risks that may impact NantKwest’s business are described under the heading “Risk Factors” in NantKwest’s most recent Quarterly Report on Form 10-Q and Annual Report on Form 10-K filed with the U.S. Securities and Exchange Commission (“SEC”) and in subsequent filings made by NantKwest with the SEC, which are available on the SEC’s website at www.sec.gov. NantKwest and ImmunityBio caution you not to place undue reliance on any forward-looking statements, which speak only as of the date hereof. NantKwest and ImmunityBio do not undertake any duty to update any forward-looking statement or other information in this communication, except to the extent required by law. No representation is made as to the safety or effectiveness of these product candidates for the therapeutic use for which such product candidates are being studied.

Certain information contained in this communication relates to or is based on studies, publications, surveys and other data obtained from third-party sources and NantKwest’s and ImmunityBio’s own internal estimates and research. While NantKwest and ImmunityBio believe these third-party sources to be reliable as of the date of this communication, it has not independently verified, and makes no representation as to the adequacy, fairness, accuracy or completeness of, any information obtained from third-party sources. In addition, all of the market data included in this communication involves a number of assumptions and limitations, and there can be no guarantee as to the accuracy or reliability of such assumptions. Finally, while NantKwest and ImmunityBio each believes its own internal research is reliable, such research has not verified by any independent source.

No Offer or Solicitation

This communication is not intended to and does not constitute an offer to sell or the solicitation of an offer to buy, sell or solicit any securities or any proxy, vote or approval in any jurisdiction pursuant to or in connection with the proposed transaction or otherwise, nor shall there be any sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offer of securities shall be deemed to be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act.

Additional Information and Where to Find It

In connection with the proposed transaction, NantKwest filed with the SEC a registration statement on Form S-4, which included a prospectus and joint proxy / solicitation statement of NantKwest and ImmunityBio (the “solicitation statement/prospectus”). The registration statement was declared effective on February 1, 2021 and the solicitation statement/prospectus was first mailed to stockholders of NantKwest on or about February 5, 2021. NantKwest may also file other documents regarding the proposed transaction with the SEC. This communication does not constitute an offer to sell or the solicitation of an offer to buy any securities or a solicitation of any vote or approval. This communication is not intended to be, and is not, a substitute for such filings or for any other document that NantKwest may file with the SEC in connection with the proposed transaction. BEFORE MAKING ANY VOTING OR

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INVESTMENT DECISION, INVESTORS AND SECURITY HOLDERS ARE URGED TO CAREFULLY READ THE ENTIRE REGISTRATION STATEMENT AND SOLICITATION STATEMENT / PROSPECTUS, AND ANY OTHER RELEVANT DOCUMENTS FILED WITH THE SEC, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THESE DOCUMENTS, CAREFULLY AND IN THEIR ENTIRETY BECAUSE THEY CONTAIN OR WILL CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED TRANSACTION. Investors and security holders are able to obtain free copies of the registration statement and solicitation statement/prospectus and other documents once they are filed with the SEC by NantKwest through the website maintained by the SEC at www.sec.gov. In addition, investors and security holders are able to obtain free copies of the prospectus and other documents filed with the SEC on NantKwest’s website at www.ir.nantkwest.com.

Participants in the Solicitation

NantKwest and certain of its respective directors and executive officers may be deemed to be participants in the solicitation of proxies from stockholders of NantKwest in connection with the proposed transaction under the rules of the SEC. Investors may obtain information regarding the names, affiliations and interests of directors and executive officers of NantKwest in NantKwest’s proxy statement for its 2020 annual meeting of stockholders, which was filed with the SEC on April 24, 2020, as well as its other filings with the SEC. Other information regarding the participants in the proxy solicitation and a description of their direct and indirect interests, by security holdings or otherwise, are included in the registration statement, solicitation statement / prospectus and other relevant materials to be filed with the SEC by NantKwest regarding the proposed transaction (if and when they become available). You may obtain free copies of these documents at the SEC’s website at www.sec.gov. Copies of documents filed with the SEC will also be available free of charge from NantKwest using the sources indicated above.

Contacts

Investors
Sarah Singleton 844-696-5235, Option 5

Media

Andrew Siegel / Greg Klassen
Joele Frank, Wilkinson Brimmer Katcher 212-355-4449

Amy Jobe, Ph.D.
LifeSci Communications 315-879-8192 ajobe@lifescicomms.com

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