AKTX

AKTX-101 advancing through IND-enabling development activities toward planned initiation of Phase 1 clinical trial in mid-2027 Compelling ASCO 2026 preclinical data further differentiates PH1 mechanism in KRAS-mutated pancreatic cancer models Strategic research collaboration with Whitehawk Therapeutics expands potential application of Akari’s PH1 platform into dual-payload ADCs Balance sheet strengthened by approximately $8.6 million of financing during the quarter, led by long-term strategic investors TAMPA, Fla. and LONDON, Aug. 13, 2026 (GLOBE NEWSWIRE) -- Akari Therapeutics, Plc (Nasdaq: AKTX), an oncology biotechnology company developing antibody drug conjugates (ADCs) with a novel payload targeting RNA splicing, reported financial results for the second quarter ending June 30, 2026 and provided an update on the continued advancement of its lead ADC candidate, AKTX-101, towards Phase 1 clinical trials. “Akari entered the second half of 2026 with increasing momentum across the business and a clear focus on advancing AKTX-101 towards the clinic,” said Abizer Gaslightwala, Chief Executive Officer of Akari Therapeutics. “We are executing the IND-enabling work required to support our planned Phase 1 trial in mid-2027, while continuing to generate data that strengthen the scientific rationale for AKTX-101 and further differentiate our novel PH1 spliceosome-modulating payload.” Mr. Gaslightwala continued, “The compelling data presented at ASCO demonstrated synergistic anti-tumor activity when our PH1 payload was combined with an approved KRAS inhibitor in KRAS-mutated pancreatic cancer models, adding to a growing body of preclinical evidence supporting PH1’s differentiated mechanism and potential utility across difficult-to-treat cancers. At the same time, our collaboration with Whitehawk expands the opportunity for PH1 into dual-payload ADCs and provides another avenue to explore the potential advantages of combining PH1’s unique mechanism with established ADC payload technologies. Importantly, receipt of approximately $8 million of financing during the quarter, led by long-term strategic investors, strengthened our balance sheet and enhances our ability to continue executing against these development priorities.” Second Quarter 2026 Highlights Strengthened the balance sheet through private placement with $5.5 million in gross proeeds, and warrant exercises worth $3.1 million in gross proceeds for a total of approximately $8.6 million in gross proceeds from financing in the quarter, resulting in approximately $8.0 million of net proceeds to the Company. Continued advancing AKTX-101 through IND-enabling activities by progressing manufacturing and development work to enable the Phase 1 clinical trial. The Company remains focused on initiating AKTX-101 for clinical development in mid-2027. Expanded the Company's strategic position in novel ADC payloads through a research collaboration on dual ADC payloads with Whitehawk Therapeutics to evaluate Akari's proprietary PH1 spliceosome modulating payload platform in combination with Whitehawk's topoisomerase I payload platform. The collaboration is designed to investigate the potential of combining complementary ADC payload technologies to synergize and enhance anti-tumor activity. This collaboration further demonstrates the unique potential of the PH1 payload and continued strong interest in ADC payload innovation across biotech/pharma. Presented breakthrough preclinical data at the 2026 American Society of Clinical Oncology (ASCO) Annual Meeting demonstrating synergistic anti-tumor activity of the Company's PH1 spliceosome modulating payload combined with an approved KRAS inhibitor in KRAS-mutated pancreatic cancer models. These data support the potential of using ADCs with the PH1 payload as a way to attack KRAS mutant tumors, still one of the greatest unmet needs. Expanded the Company's intellectual property portfolio through newly issued international patents for its proprietary PH1 spliceosome modulating payload technology, further strengthening long-term protection of the platform and supporting future ADC pipeline expansion. Second Quarter 2026 Financial Results Research and development expenses were $2.1 million for the second quarter of 2026, compared with $0.7 million for the second quarter of 2025. The increase primarily reflects expanded development and manufacturing activities supporting the advancement of AKTX-101 through critical IND enabling activities. General and administrative expenses were $2.5 million for the second quarter of 2026, comparable with $2.5 million for the same period in 2025. Net loss for the second quarter of 2026 was $4.8 million, compared with $1.9 million for the second quarter of 2025. Cash totaled $7.7 million as of June 30, 2026, compared with $5.2 million as of December 31, 2025. About Akari Therapeutics Akari Therapeutics is an oncology biotechnology company developing next-generation antibody drug conjugates (ADCs) with a unique payload, PH1, which targets RNA splicing. Utilizing its innovative ADC discovery platform, the Company has the ability to generate ADC candidates and optimize them based on the desired application to any antigen target of interest. Akari’s lead candidate, AKTX-101, targets the Trop2 receptor on cancer cells with a proprietary linker, enabling it to deliver its novel PH1 payload directly into the tumor with minimal off-target effects. Unlike current ADCs that use microtubule inhibitors and DNA-damaging agents as their payloads, PH1 is a novel payload that is a spliceosome modulator designed to disrupt RNA splicing within cancer cells. This splicing modulation has been shown in preclinical animal models to induce cancer cell death while activating both the innate and adaptive immune systems to drive robust and durable activity. In preclinical studies, AKTX-101 has been shown to have significant activity and prolonged survival relative to ADCs with traditional payloads. Additionally, AKTX-101 has the potential to be synergistic with checkpoint inhibitors and has demonstrated prolonged survival as both a single agent and in combination with checkpoint inhibitors. The PH1 payload has also been demonstrated to be very active against cancer cells with key oncogenic drivers such as KRAS, BRAF, ARV7, FGFR3 fusions, and others. The Company has initiated IND enabling studies for AKTX-101 with a goal of starting its First-In-Human trial by mid-2027. Akari is also developing AKTX-102, an ADC candidate targeting CEACAM5 (Carcinoembryonic Antigen-related Cell Adhesion Molecule-5), a well-validated tumor antigen broadly expressed across multiple solid tumors. AKTX-102 is designed to leverage Akari’s proprietary PH1 spliceosome-modulating payload and a novel antibody construct to enable differentiated tumor cell killing and immune activation. For more information about the Company, please visit www.akaritx.com and connect on X and LinkedIn. Cautionary Note Regarding Forward-Looking Statements This press release includes express or implied forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, about the Company that involve risks and uncertainties relating to future events and the future performance of the Company. Actual events or results may differ materially from these forward-looking statements. Words such as “will,” “could,” “would,” “should,” “expect,” “plan,” “anticipate,” “intend,” “believe,” “estimate,” “predict,” “project,” “potential,” “continue,” “future,” “opportunity” “will likely result,” “target,” variations of such words, and similar expressions or negatives of these words are intended to identify such forward-looking statements, although not all forward-looking statements contain these identifying words. Examples of such forward-looking statements include, but are not limited to, express or implied statements regarding the ability of the Company to advance its product candidates for the treatment of cancer and the timing of a filing of an IND and commencement of a Phase 1 clinical trial. These statements are based on the Company’s current plans, estimates and projections. By their very nature, forward-looking statements involve inherent risks and uncertainties, both general and specific. A number of important factors, including those described in this communication, could cause actual results to differ materially from those contemplated in any forward-looking statements. Factors that may affect future results and may cause these forward-looking statements to be inaccurate include, without limitation: the Company’s need for additional capital; the potential impact of unforeseen liabilities, future capital expenditures, revenues, costs, expenses, earnings, synergies, economic performance, indebtedness, financial condition and losses on the future prospects, business and management strategies for the management, expansion and growth of the business; risks related to global as well as local political and economic conditions, including interest rate and currency exchange rate fluctuations; potential delays or failures related to research and/or development of the Company’s programs or product candidates; risks related to any loss of the Company’s patents or other intellectual property rights; any interruptions of the supply chain for raw materials or manufacturing for the Company’s product candidates, including as a result of potential tariffs; the nature, timing, cost and possible success and therapeutic applications of product candidates being developed by the Company and/or its collaborators or licensees; the extent to which the results from the research and development programs conducted by the Company, and/or its collaborators or licensees may be replicated in other studies and/or lead to advancement of product candidates to clinical trials, therapeutic applications, or regulatory approval; uncertainty of the utilization, market acceptance, and commercial success of the Company’s product candidates; risks related to competition for the Company’s product candidates; and the Company’s ability to successfully develop or commercialize its product candidates. While the foregoing list of factors presented here is considered representative, no list should be considered to be a complete statement of all potential risks and uncertainties. More detailed information about the Company and the risk factors that may affect the realization of forward-looking statements is set forth in the Company’s filings with the SEC, copies of which may be obtained from the SEC’s website at www.sec.gov. The Company assumes no, and hereby disclaims any, obligation to update the forward-looking statements contained in this press release except as required by law. Investor Relations Contact JTC Team, LLC Jenene Thomas 908-824-0775 [email protected]

Advancing development of novel Antibody Drug Conjugates (ADCs) with immuno-oncology payloads to treat multiple cancer tumors Rounding out executive team with deep oncology experience by appointing new Head of Business Development - Oncology BOSTON and LONDON, May 15, 2025 (GLOBE NEWSWIRE) -- Akari Therapeutics, Plc (Nasdaq: AKTX), a biotechnology company developing novel Antibody Drug Conjugates (ADCs) with immuno-oncology payloads for the treatment of cancer, today reported its financial results for the first quarter ended March 31, 2025 and provided a corporate update. "We remain laser focused on becoming a key player in the ADC space and advancing our novel ADC platform built around immuno-oncology payloads and our lead asset AKTX-101, an ADC targeting Trop2 with our immuno-oncology payload, PH1. We continue to develop and execute a clear path forward for our ADC pipeline and support these efforts with ongoing activities and building the team that we believe positions us for success in the near and long term,” commented Abizer Gaslightwala, President and Chief Executive Officer of Akari. “In particular, we were pleased to recently welcome Mark Kubik, a seasoned leader in the Antibody Drug Conjugate space, as Head of Business Development, Oncology and believe his expertise will be invaluable as we continue to advance our novel ADC platform technology.” Leveraging its innovative payload platform, the Company is advancing a pipeline of potentially first-in-class, best-in-class ADC candidates across a wide range of cancer tumor targets. These initial candidates have shown significant tumor-killing activity in preclinical models with the ability to robustly activate the immune system to drive durable, and sustained outcomes. Upcoming Expected Value-Driving Milestones Novel ADC’s With Immuno-Oncology Payloads Anticipate presenting preclinical data showing that a proof-of-concept ADC with PH1 payload exhibits robust immuno-oncology activity, at a scientific conference in second half of 2025. Complete additional preclinical studies for novel PH1 payload exploring activity in prostate cancer cell lines. Explore preclinical activity for AKTX-101 in different solid tumor indications including lung, as single agent and in combination with other approved agents. Continue to focus on operational excellence and efficient capital allocation to advance novel payload ADC platform. Ongoing efforts to seek strategic partners for research collaborations on PH1 immuno-oncology payload across customized tumor targets. Continued discussions with partners on advancing AKTX-101 ADC (Trop2/PH1 payload) through additional IND-enabling activities. Non-Core Asset Out Licensing Continue efforts to out-license non-core assets across inflammation, ophthalmology, and rare diseases as a source of non-dilutive capital to invest into ADC platform. Summary of Financial Results for First Quarter 2025 The net loss from operations for the three months ended March 31, 2025 was approximately $3.7 million compared to $5.6 million for the same period in 2024. The Company reported research and development expenses of $0.8 million for the three months ended March 31, 2025 compared to approximately $2.3 million for the same period in 2024. The decrease was primarily due to our decision to suspend our HSCT-TMA clinical stage program with nomacopan in May 2024. General and administrative expenses were approximately $2.7 million for the three months ended March 31, 2025 compared to approximately $3.7 million for the same period in 2024. The decrease was primarily due to (i) decreases in legal and professional fees (primarily related to the Merger) and (ii) a decrease in directors’ and officers’ insurance. As of March 31, 2025, the Company had cash of approximately $2.6 million. The net proceeds from the Company’s March 2025 offering, after deducting placement agent fees and other offering expenses, were approximately $6.0 million, of which $4.0 million was received in April 2025. About Akari Therapeutics Akari Therapeutics is an oncology biotechnology company developing novel Antibody Drug Conjugates (ADCs) with immuno-oncology payloads, the first being PH1. Utilizing its innovative ADC discovery platform, the Company has the ability to generate ADC candidates to any cancer tumor target of interest. Akari’s lead candidate, AKTX-101, targets the Trop2 receptor on cancer cells to deliver its novel PH1 immuno-oncology payload directly into the tumor cells. Unlike current ADCs that use tubulin inhibitors and DNA damaging agents as their payloads, PH1 is a novel payload that is a spliceosome inhibitor designed to disrupt RNA splicing within cancer tumor cells. This splicing inhibition has been shown in preclinical animal models to induce cancer cell death while activating immune cells to drive robust and durable activity. In preclinical studies, AKTX-101 has shown to have significant activity and prolonged survival, relative to ADCs with traditional payloads. Additionally, AKTX-101 has the potential to be synergistic with checkpoint inhibitors and has demonstrated prolonged survival as both a single agent and in combination with checkpoint inhibitors, as compared to appropriate controls. The Company is generating validating data on its immuno-oncology payload PH1 to continue advancing its lead asset, AKTX-101, as well as developing ADCs against other undisclosed targets with its lead immuno-oncology payload, PH1. For more information about the Company, please visit www.akaritx.com and connect on X and LinkedIn. Cautionary Note Regarding Forward-Looking Statements This press release includes express or implied forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, about the Company that involve risks and uncertainties relating to future events and the future performance of the Company. Actual events or results may differ materially from these forward-looking statements. Words such as “will,” “could,” “would,” “should,” “expect,” “plan,” “anticipate,” “intend,” “believe,” “estimate,” “predict,” “project,” “potential,” “continue,” “future,” “opportunity” “will likely result,” “target,” variations of such words, and similar expressions or negatives of these words are intended to identify such forward-looking statements, although not all forward-looking statements contain these identifying words. Examples of such forward-looking statements include, but are not limited to, express or implied statements regarding the ability of the Company to advance its product candidates for the treatment of cancer and any other diseases, and ultimately bring therapies to patients; the Company’s targets, plans, objectives or goals for future operations, including those related to its product candidates. These statements are based on the Company’s current plans, estimates and projections. By their very nature, forward-looking statements involve inherent risks and uncertainties, both general and specific. A number of important factors, including those described in this communication, could cause actual results to differ materially from those contemplated in any forward-looking statements. Factors that may affect future results and may cause these forward-looking statements to be inaccurate include, without limitation: the potential impact of unforeseen liabilities, future capital expenditures, revenues, costs, expenses, earnings, synergies, economic performance, indebtedness, financial condition and losses on the future prospects, business and management strategies for the management, expansion and growth of the business; risks related to global as well as local political and economic conditions, including interest rate and currency exchange rate fluctuations; potential delays or failures related to research and/or development of the Company’s programs or product candidates; risks related to any loss of the Company’s patents or other intellectual property rights; any interruptions of the supply chain for raw materials or manufacturing for the Company’s product candidates, including as a result of potential tariffs; the nature, timing, cost and possible success and therapeutic applications of product candidates being developed by the Company and/or its collaborators or licensees; the extent to which the results from the research and development programs conducted by the Company, and/or its collaborators or licensees may be replicated in other studies and/or lead to advancement of product candidates to clinical trials, therapeutic applications, or regulatory approval; uncertainty of the utilization, market acceptance, and commercial success of the Company’s product candidates; risks related to competition for the Company’s product candidates; and the Company’s ability to successfully develop or commercialize its product candidates. While the foregoing list of factors presented here is considered representative, no list should be considered to be a complete statement of all potential risks and uncertainties. More detailed information about the Company and the risk factors that may affect the realization of forward-looking statements is set forth in the Company's filings with the SEC, copies of which may be obtained from the SEC's website at www.sec.gov. The Company assumes no, and hereby disclaims any, obligation to update the forward-looking statements contained in this press release except as required by law. Investor Relations Contact JTC Team, LLC Jenene Thomas 908-824-0775 [email protected]

Advancing development of next-generation precision Antibody Drug Conjugates (ADCs) to address multiple indications across a range of cancer types Continued progress of lead program, AKTX-101, for the treatment of solid tumors Platform technology to fuel pipeline with ability to generate novel ADC candidates across a range of solid/hematological cancers Leveraging opportunities for non-dilutive capital through partnering of legacy pipeline Cash on hand expected to be sufficient to fund planned operations into September 2025 BOSTON and LONDON, April 16, 2025 (GLOBE NEWSWIRE) -- Akari Therapeutics, Plc (Nasdaq: AKTX), a biotechnology company developing next-generation precision bi-functional antibody drug conjugates (ADC) for the treatment of cancer, today reported its financial results for the fiscal year ended December 31, 2024 and provided a corporate update. "2024 was a transformational year for Akari with the successful completion of our merger with Peak Bio Inc., and renewed focus on advancing our next-generation precision ADC pipeline candidates,” commented Samir R. Patel, M.D., President and Chief Executive Officer of Akari Therapeutics. “Looking ahead, we have made strategic leadership appointments with key skillsets to continue setting the Company up for success. We recently announced the appointment of Abizer Gaslightwala, a seasoned oncology executive with an impressive track record, who will serve as Akari’s President and Chief Executive Officer, effective April 21, 2025. I believe with our innovative platform technology and preclinical data demonstrated to date, Akari is well-positioned to become a key player in the ADC space and capitalize on the significant deal-flow seen in early ADC development. We look forward to an exciting year ahead and remain focused on the successful execution of our capital-efficient development strategies.”Program Highlights Following the completed merger with Peak Bio, Inc. in November 2024, Akari has focused its efforts on the discovery, research and development of novel anti-cancer payloads with mechanisms of action that differ from currently approved ADC therapies and the application of those payloads against clinically validated targets. Leveraging its platform, the Company is advancing a pipeline of potentially first-in-class, best-in-class ADC candidates that are designed to target and kill cancer cells and stimulate the immune system, or bifunctional ADCs, all while potentially overcoming the limitations inherent in existing therapies. Lead Candidate: AKTX-101 (TROP2 PH1 ADC) - Novel Payload is a Spliceosome Inhibitor With Multiple Anti-Tumor Mechanisms Potential to overcome shortcomings of current ADCs Immunostimulatory effects Reduced off-target toxicity Overcomes resistance mechanisms Potential for synergy with immunotherapies Significant advantages over current TROP2 ADCs observed in multiple preclinical models: Superior activity Prolonged survival Less resistance Better tolerability Prolonged survival in combination with checkpoint inhibitors (CPI) Upcoming Expected Value-Driving Milestones Next-Generation Precision Bi-Functional ADC Platform Present anticipated PH1 Payload preclinical data at scientific conference Complete additional preclinical studies for AKTX-101 Continue to advance pipeline by generating additional validating data on PH1 payload while advancing discovery work on additional novel payloads PH5 and PH6 Round out Executive Team with critical hires Seek licensing/strategic partner for AKTX-101 (TROP2 PH1 ADC) Legacy Pipeline Assets Continue Business Development efforts to secure development partners and provide non-dilutive capital Summary of Financial Results for Full Year 2024 The net loss from operations for the year ended December 31, 2024 was approximately $21.6 million compared to approximately $16.8 million for the comparable period in 2023. The increase in net loss from operations is primarily attributable to merger related costs of $3.3 million, restructuring costs of $1.7 million and an increase in research and development expenses of $1.5 million which was offset by a reduction in general and administrative expenses of $1.7 million. The Company reported research and development expenses of $7.0 million for the year ended December 31, 2024 compared to approximately $5.5 million for the comparable period in 2023. General and administrative expenses were approximately $9.7 million for the year ended December 31, 2024 compared to approximately $11.4 million for the year ended December 31, 2023. As of December 31, 2024, the Company had cash of approximately $2.6 million. Management anticipates that its cash on hand as of December 31, 2024 including the net proceeds from the private placement of $6.6 million announced in March 2025, is sufficient to fund operations into September 2025. About Akari Therapeutics Akari Therapeutics is a biotechnology company developing next-generation precision bi-functional antibody drug conjugates (ADC) for the treatment of cancer. Utilizing its innovative ADC discovery platform, the Company has the ability to generate novel bi-functional ADC candidates and optimize them based on the desired application to target a range of cancers to fuel a growing pipeline. Akari’s lead candidate, AKTX-101, targets the TROP2 receptor on cancer cells and with a proprietary linker, delivers its novel PH1 payload directly into the tumor. Unlike current ADCs that use tubulin inhibitors and DNA damaging agents as their toxin classes, PH1 is a novel bi-functional payload that is designed to disrupt RNA splicing within cancer cells, inducing tumor-specific cell death while generating immunostimulatory effects and minimizing off-target toxicity. Given this mechanism, AKTX-101 has the potential to overcome many of the shortcomings of current ADCs, off-target toxicity and resistance. In preclinical studies, AKTX-101 has shown to have superior activity, prolonged survival, less resistance and better tolerability and safety. Additionally, AKTX-101 has the potential to be synergistic with checkpoint inhibitors and has demonstrated prolonged survival in preclinical models. The Company is generating validating data on its novel payloads to advance its pipeline. For more information about the Company, please visit www.akaritx.com and connect on X and LinkedIn. Cautionary Note Regarding Forward-Looking Statements This press release includes express or implied forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, about the Company that involve risks and uncertainties relating to future events and the future performance of the Company. Actual events or results may differ materially from these forward-looking statements. Words such as “will,” “could,” “would,” “should,” “expect,” “plan,” “anticipate,” “intend,” “believe,” “estimate,” “predict,” “project,” “potential,” “continue,” “future,” “opportunity” “will likely result,” “target,” variations of such words, and similar expressions or negatives of these words are intended to identify such forward-looking statements, although not all forward-looking statements contain these identifying words. Examples of such forward-looking statements include, but are not limited to, express or implied statements regarding the ability of the Company to advance its product candidates for the treatment of cancer and any other diseases, and ultimately bring therapies to patients; the Company’s targets, plans, objectives or goals for future operations, including those related to its product candidates; financial projections; future economic performance; business development efforts and securing business development partners and the assumptions underlying or relating to such statements. These statements are based on the Company’s current plans, estimates and projections. By their very nature, forward-looking statements involve inherent risks and uncertainties, both general and specific. A number of important factors, including those described in this communication, could cause actual results to differ materially from those contemplated in any forward-looking statements. Factors that may affect future results and may cause these forward-looking statements to be inaccurate include, without limitation: the potential impact of unforeseen liabilities, future capital expenditures, revenues, costs, expenses, earnings, synergies, economic performance, indebtedness, financial condition and losses on the future prospects, business and management strategies for the management, expansion and growth of the business; risks related to global as well as local political and economic conditions, including interest rate and currency exchange rate fluctuations; potential delays or failures related to research and/or development of the Company’s programs or product candidates; risks related to any loss of the Company’s patents or other intellectual property rights; any interruptions of the supply chain for raw materials or manufacturing for the Company’s product candidates, including as a result of potential tariffs; the nature, timing, cost and possible success and therapeutic applications of product candidates being developed by the Company and/or its collaborators or licensees; the extent to which the results from the research and development programs conducted by the Company, and/or its collaborators or licensees may be replicated in other studies and/or lead to advancement of product candidates to clinical trials, therapeutic applications, or regulatory approval; uncertainty of the utilization, market acceptance, and commercial success of the Company’s product candidates; risks related to competition for the Company’s product candidates; and the Company’s ability to successfully develop or commercialize its product candidates. While the foregoing list of factors presented here is considered representative, no list should be considered to be a complete statement of all potential risks and uncertainties. More detailed information about the Company and the risk factors that may affect the realization of forward-looking statements is set forth in the Company's filings with the SEC, copies of which may be obtained from the SEC's website at www.sec.gov. The Company assumes no, and hereby disclaims any, obligation to update the forward-looking statements contained in this press release except as required by law. Investor Relations Contact JTC Team, LLC Jenene Thomas 908-824-0775 [email protected]