NKp46

Phase 1/2 study is evaluating IPH6501, a first-in-class CD20-targeting tetraspecific natural killer cell engager, from ANKET® platform, for the treatment of CD20-expressing B-cell Non-Hodgkin's Lymphomas. MARSEILLE, France--(BUSINESS WIRE)-- Regulatory News: Innate Pharma SA (Euronext Paris: IPH; Nasdaq: IPHA) (“Innate” or the “Company”) today announced the first patient was dosed in its Phase 1/2 multicenter trial (NCT06088654), investigating the safety and tolerability of IPH6501 in patients with Relapsed and/or Refractory CD20-expressing B-cell Non-Hodgkin’s Lymphoma (NHL). IPH6501 is Innate’s first-in-class CD20-targeting tetraspecific ANKET® (Antibody-based NK cell Engager Therapeutics) that co-engages CD20 as a target antigen on malignant B cells and three receptors on NK cells: two activating receptors (NKp46 and CD16) and the interleukin-2 receptor (but not its alpha subunit), with a human IL‑2 variant, hence providing proliferation and activation signals targeted to NK cells and promoting their cytotoxic activity against CD20 expressing malignant cells. The study is planned to enroll up to 184 patients. “We are pleased to announce the dosing of a first patient in this Phase 1/2 study evaluating IPH6501, our proprietary ANKET® asset and the first tetraspecific NK Cell Engager to enter the clinic.” commented Dr Sonia Quaratino, Chief Medical Officer at Innate Pharma. “With the addition of the IL-2 variant, our second generation ANKET® molecules can deliver proliferation signals to NK cells, and thus enhance their effector functions against cancer cells. Thanks to this novel format, IPH6501 represents a promising alternative strategy to T cell therapies for patients with B-cell non-Hodgkin’s lymphomas.” “The discovery and implementation of novel chemotherapies, T-cell based immunotherapies and targeted therapies have improved outcomes for patients with B-cell non-Hodgkin’s lymphomas compared with traditional chemotherapy.” added Dr Lorenzo Falchi, Lymphoma Specialist at the Memorial Sloan Kettering Cancer Center, New-York, and principal investigator of the study. “However, many patients fail to achieve a response to or develop disease relapse after treatment. In this context, IPH6501 represents an innovative option for the treatment of patients with R/R B-cell non-Hodgkin’s lymphomas and has the potential to fulfil a large unmet need.” More information about the trial can be found on clinicaltrials.gov. About B-Cell Non-Hodgkin’s Lymphoma B-cell lymphomas are clonal tumors of mature and immature B cells that constitute the majority (80-85%) of NHLs. NHLs are a heterogeneous group of lymphoproliferative malignancies. NHL usually originates in the lymphoid tissues and can spread to other organs. NHL is the most common hematological malignancy worldwide, accounting for nearly 3% of cancer diagnoses and deaths. According to the latest World Health Organization (WHO) classification, the most common B-NHL in Western countries is Diffuse large B cell lymphoma (DLBCL), accounting for around 31% of adult cases. Other common aggressive B-cell subtypes include Mantle Cell Lymphoma (MCL) (6% of cases) and Burkitt lymphoma (BL) (2% of cases). Among indolent B-cell NHL, Follicular Lymphoma (FL) accounts for 22% of cases in the Western world, followed by marginal zone lymphoma (MZL) (8% of cases). About IPH6501 IPH6501 is the first Antibody-based NK cell Engager Therapeutic to co-engage activating receptors on NK cells (NKp46 and CD16), IL-2R (but not α subunit) through a variant of human IL-2, and a tumor antigen (CD20) via a single molecule, hence providing proliferation and activation signals targeted to NK cells and promoting their cytotoxic activity against CD20 expressing malignant cells. IPH6501 has shown better anti-tumor efficacy than approved benchmark antibodies in preclinical tumor models (Demaria, EHA 2023). About ANKET® ANKET® (Antibody-based NK cell Engager Therapeutics) is Innate’s proprietary platform for developing next-generation, multispecific natural killer (NK) cell engagers to treat certain types of cancer. This fit-for-purpose technology is creating an entirely new class of molecules to induce synthetic immunity against cancer. About Innate Pharma Innate Pharma S.A. is a global, clinical-stage biotechnology company developing immunotherapies for cancer patients. Its innovative approach aims to harness the innate immune system through therapeutic antibodies and its ANKET® proprietary platform. Innate’s portfolio includes lead proprietary program lacutamab, developed in advanced form of cutaneous T cell lymphomas and peripheral T cell lymphomas, monalizumab developed with AstraZeneca in non-small cell lung cancer, as well as ANKET® multi-specific NK cell engagers to address multiple tumor types. Innate Pharma is a trusted partner to biopharmaceutical companies such as Sanofi and AstraZeneca, as well as leading research institutions, to accelerate innovation, research and development for the benefit of patients. Headquartered in Marseille, France with a US office in Rockville, MD, Innate Pharma is listed on Euronext Paris and Nasdaq in the US. Learn more about Innate Pharma at and follow us on X and LinkedIn. Information about Innate Pharma shares ISIN code Ticker code LEI FR0010331421 Euronext: IPH Nasdaq: IPHA 9695002Y8420ZB8HJE29 Disclaimer on forward-looking information and risk factors This press release contains certain forward-looking statements, including those within the meaning of the Private Securities Litigation Reform Act of 1995. The use of certain words, including “believe,” “potential,” “expect” and “will” and similar expressions, is intended to identify forward-looking statements. Although the company believes its expectations are based on reasonable assumptions, these forward-looking statements are subject to numerous risks and uncertainties, which could cause actual results to differ materially from those anticipated. These risks and uncertainties include, among other things, the uncertainties inherent in research and development, including related to safety, progression of and results from its ongoing and planned clinical trials and preclinical studies, review and approvals by regulatory authorities of its product candidates, the Company’s commercialization efforts and the Company’s continued ability to raise capital to fund its development. For an additional discussion of risks and uncertainties which could cause the company's actual results, financial condition, performance or achievements to differ from those contained in the forward-looking statements, please refer to the Risk Factors (“Facteurs de Risque") section of the Universal Registration Document filed with the French Financial Markets Authority (“AMF”), which is available on the AMF website or on Innate Pharma’s website, and public filings and reports filed with the U.S. Securities and Exchange Commission (“SEC”), including the Company’s Annual Report on Form 20-F for the year ended December 31, 2022, and subsequent filings and reports filed with the AMF or SEC, or otherwise made public, by the Company. This press release and the information contained herein do not constitute an offer to sell or a solicitation of an offer to buy or subscribe to shares in Innate Pharma in any country. View source version on businesswire.com: Contacts For additional information, please contact: Investors Innate Pharma Henry Wheeler Tel.: +33 (0)4 84 90 32 88 Henry.wheeler@innate-pharma.fr Media Relations NewCap Arthur Rouillé Tel.: +33 (0)1 44 71 00 15 innate@newcap.eu Source: Innate Pharma SA View this news release online at:

Sanofi to exercise one option to license a new ANKET® program from Innate; After a research collaboration period, Sanofi will be responsible for all development, manufacturing and commercialization of the program Innate to receive €15m as option exercise payment MARSEILLE, France--(BUSINESS WIRE)-- Regulatory News: Innate Pharma SA (Euronext Paris: IPH; Nasdaq: IPHA) and Sanofi (NASDAQ: SNY) announced today that Sanofi has exercised its option to license a natural killer (NK) cell engager program in solid tumors from Innate’s ANKET® (Antibody-based NK Cell Engager Therapeutics) platform pursuant to the terms of the research collaboration and license agreement signed in December 2022. Following a research collaboration period, Sanofi will be responsible for all development, manufacturing and commercialization. Sanofi still retains the option to one additional ANKET® target as per the license agreement. Eric Vivier, Ph.D., DVM, PhD, Senior Vice President, Chief Scientific Officer of Innate Pharma, said: “We have been collaborating with Sanofi since 2016 and together we have made significant progress in advancing multi-specific NK Cell Engagers for the treatment of various cancers with two programs now in the clinic. Building on our partnership with Sanofi, the exercise of this option is another important milestone as we continue to grow our ANKET® platform.” Under the terms of the December 2022 agreement, Innate will receive a €15m payment for the exercise of this option. Innate Pharma is eligible for up to €1.35bn total in preclinical, clinical, regulatory and commercial milestones plus royalties on potential net sales. Valeria Fantin, Ph.D., Global Head of Oncology Research at Sanofi, states: “Sanofi is pleased with our collaboration with Innate and continues to be excited at the potential of investigational NK Cell Engagers. The emerging results we have seen show promise at the possibility of offering options to patients who have limited treatments available to them.” About ANKET® ANKET® (Antibody-based NK cell Engager Therapeutics) is Innate's proprietary platform for developing next-generation, multi-specific natural killer (NK) cell engagers to treat certain types of cancer. This versatile, fit-for-purpose technology is creating an entirely new class of molecules to induce synthetic immunity against cancer. About the Innate-Sanofi research collaboration and license agreements The Company has a research collaboration and license agreement with Sanofi to apply Innate’s proprietary technology to the development of innovative multi-specific antibody formats engaging NK cells through the activating receptors NKp46 and CD16 to kill tumor cells. Under the 2016 research collaboration and license agreement, Sanofi is responsible for the development, manufacturing and commercialization of products resulting from the research collaboration, IPH6101/SAR’579 (Trifunctional anti-CD123 NKp46xCD16 NK cell engager) and IPH6401/SAR’514 (Trifunctional anti-BCMA NKp46xCD16 NK cell engager). Innate Pharma is eligible to up to €400m in development and commercial milestone payments as well as royalties on net sales. As part of the license agreement entered in December 2022, Sanofi licensed IPH62 (B7-H3) and one undisclosed ANKET® programs and has the option for one additional target. Under the terms of the 2022 agreement, Innate Pharma is eligible to up to €1.35bn total in preclinical, clinical, regulatory and commercial milestones plus royalties on potential net sales. About Innate Pharma Innate Pharma S.A. is a global, clinical-stage oncology-focused biotech company dedicated to improving treatment and clinical outcomes for patients through therapeutic antibodies that harness the immune system to fight cancer. Innate Pharma’s broad pipeline of antibodies includes several potentially first-in-class clinical and preclinical candidates in cancers with high unmet medical need. Innate is a pioneer in the understanding of Natural Killer cell biology and has expanded its expertise in the tumor microenvironment and tumor-antigens, as well as antibody engineering. This innovative approach has resulted in a diversified proprietary portfolio and major alliances with leaders in the biopharmaceutical industry including Bristol-Myers Squibb, Novo Nordisk A/S, Sanofi, and a multi-products collaboration with AstraZeneca. Headquartered in Marseille, France with a US office in Rockville, MD, Innate Pharma is listed on Euronext Paris and Nasdaq in the US. Learn more about Innate Pharma at . Information about Innate Pharma shares: ISIN code Ticker code LEI FR0010331421 Euronext: IPH Nasdaq: IPHA 9695002Y8420ZB8HJE29 Disclaimer on forward-looking information and risk factors This press release contains certain forward-looking statements, including those within the meaning of the Private Securities Litigation Reform Act of 1995. The use of certain words, including “believe,” “potential,” “expect” and “will” and similar expressions, is intended to identify forward-looking statements. Although the company believes its expectations are based on reasonable assumptions, these forward-looking statements are subject to numerous risks and uncertainties, which could cause actual results to differ materially from those anticipated. These risks and uncertainties include, among other things, the uncertainties inherent in research and development, including related to safety, progression of and results from its ongoing and planned clinical trials and preclinical studies, review and approvals by regulatory authorities of its product candidates, the Company’s commercialization efforts and the Company’s continued ability to raise capital to fund its development. For an additional discussion of risks and uncertainties which could cause the company's actual results, financial condition, performance or achievements to differ from those contained in the forward-looking statements, please refer to the Risk Factors (“Facteurs de Risque") section of the Universal Registration Document filed with the French Financial Markets Authority (“AMF”), which is available on the AMF website or on Innate Pharma’s website, and public filings and reports filed with the U.S. Securities and Exchange Commission (“SEC”), including the Company’s Annual Report on Form 20-F for the year ended December 31, 2022, and subsequent filings and reports filed with the AMF or SEC, or otherwise made public, by the Company. This press release and the information contained herein do not constitute an offer to sell or a solicitation of an offer to buy or subscribe to shares in Innate Pharma in any country. View source version on businesswire.com: Contacts Investors Innate Pharma Henry Wheeler Tel.: +33 (0)4 84 90 32 88 Henry.wheeler@innate-pharma.fr Media Relations NewCap Arthur Rouillé Tel.: +33 (0)1 44 71 00 15 innate@newcap.eu Source: Innate Pharma SA View this news release online at:

SAR443579/IPH6101, ANKET® platform lead asset, is a first-in-class NKp46/CD16-based NK cell engager targeting CD123 from a joint research collaboration between Innate Pharma and Sanofi, under development by Sanofi SAR443579 induced clinical benefit in patients with R/R AML with 5 complete remissions (4 CR / 1 CRi) achieved at 1 mg/kg, and was well tolerated up to doses of 6 mg/kg SAR443579 demonstrated durable responses with two responders remaining in remission beyond 8.8 and 12.2 months of treatment MARSEILLE, France--(BUSINESS WIRE)-- Innate Pharma SA (Euronext Paris: IPH; Nasdaq: IPHA) (“Innate” or the “Company”) announced today that the updated efficacy and safety results from an open-label, first-in-human, Phase 1/2 dose-escalation study of SAR443579 / IPH6101, an investigational CD123 targeting NKp46/CD16-based Natural Killer Cell Engager (NKCE) from a joint research collaboration between Innate Pharma and Sanofi were shared in a poster presentation at the American Society of Hematology 2023 Annual Meeting in San Diego, California. The study, run by Sanofi, tests SAR443579 as a monotherapy for the treatment of blood cancers with high unmet needs, including relapsed or refractory acute myeloid leukemia (R/R AML), B-cell acute lymphoblastic leukemia (B-ALL) and high-risk myelodysplasia (HR-MDS). SAR443579 has FDA Fast Track Designation for the treatment of acute myeloid leukemia. As of July 5, 2023, 43 patients (42 R/R AML and 1 HR-MDS) across 8 dose levels between 10 – 6000 μg/kg/dose were available for analysis. Patients had received a median of 2.0 (1.0 – 10.0) prior lines of treatment with 13 patients (30.2%) reporting prior hematopoietic stem cell transplantation and 36 patients (83.7%) with prior exposure to venetoclax. At the highest dose of 1000 μg/kg QW, 5/15 (33.3%) patients with AML achieved a CR (4 CR / 1 CRi)1. SAR443579 was well tolerated up to 6000 μg/kg QW with observed clinical benefit in patients with R/R AML, in line with the predicted favorable safety profile. “We are pleased to see that SAR443579 continues to show promising durable clinical efficacy with now 5 complete remissions along a favorable safety pro this Phase 1/2 dose escalation study in various blood cancers,” says Sonia Quaratino, Chief Medical Officer of Innate Pharma. “We look forward to continue to advance the development of multi-specific NK Cell Engagers for the treatment of cancer with our ANKET platform® and continuing our partnership with Sanofi.” “Sanofi is pleased to share these emerging results from our study of SAR443579,” states Peter Adamson, Global Development Head, Oncology, Sanofi. “We believe this investigational NK cell engager may be important to patients with AML who, too often, have limited therapeutic options available to them. Our updated results help drive Sanofi R&D teams around the world to continue efforts to develop impactful treatments for diseases with high unmet medical needs.” 1 CR: complete remission; CRi: CR with incomplete hematological recovery About ANKET® ANKET® (Antibody-based NK cell Engager Therapeutics) is Innate's proprietary platform for developing next-generation, multi-specific natural killer (NK) cell engagers to treat certain types of cancer. This versatile, fit-for-purpose technology is creating an entirely new class of molecules to induce synthetic immunity against cancer. About the Innate-Sanofi research collaboration and licensing agreements The Company has a research collaboration and license agreement with Sanofi to apply Innate’s proprietary technology to the development of innovative multi-specific antibody formats engaging NK cells through the activating receptors NKp46 and CD16 to kill tumor cells. Under the terms of the 2016 research collaboration and license agreement, Sanofi is responsible for the development, manufacturing and commercialization of products resulting from the research collaboration, which includes IPH6101/SAR’579 (Trifunctional anti-CD123 NKp46xCD16 NK cell engager) and IPH6401/SAR’514 (Trifunctional anti-BCMA NKp46xCD16 NK cell engager). As part of the 2016 agreement, Innate Pharma is eligible to up to €400m in development and commercial milestone payments as well as royalties on net sales. As part of the license agreement entered in December 2022, Sanofi licensed IPH62 and has the option for two additional targets. Under the terms of the 2022 agreement, Innate Pharma is eligible to up to €1.35bn total in preclinical, clinical, regulatory and commercial milestones plus royalties on potential net sales. About Innate Pharma Innate Pharma S.A. is a global, clinical-stage biotechnology company developing immunotherapies for cancer patients. Its innovative approach aims to harness the innate immune system through therapeutic antibodies and its ANKET® (Antibody-based NK cell Engager Therapeutics) proprietary platform. Innate’s portfolio includes lead proprietary program lacutamab, developed in advanced form of cutaneous T cell lymphomas and peripheral T cell lymphomas, monalizumab developed with AstraZeneca in non-small cell lung cancer, as well as ANKET® multi-specific NK cell engagers to address multiple tumor types. Innate Pharma is a trusted partner to biopharmaceutical companies such as Sanofi and AstraZeneca, as well as leading research institutions, to accelerate innovation, research and development for the benefit of patients. Headquartered in Marseille, France with a US office in Rockville, MD, Innate Pharma is listed on Euronext Paris and Nasdaq in the US. Learn more about Innate Pharma at and follow us on Twitter and LinkedIn. Information about Innate Pharma shares ISIN code Ticker code LEI FR0010331421 Euronext: IPH Nasdaq: IPHA 9695002Y8420ZB8HJE29 Disclaimer on forward-looking information and risk factors This press release contains certain forward-looking statements, including those within the meaning of the Private Securities Litigation Reform Act of 1995. The use of certain words, including “believe,” “potential,” “expect” and “will” and similar expressions, is intended to identify forward-looking statements. Although the company believes its expectations are based on reasonable assumptions, these forward-looking statements are subject to numerous risks and uncertainties, which could cause actual results to differ materially from those anticipated. These risks and uncertainties include, among other things, the uncertainties inherent in research and development, including related to safety, progression of and results from its ongoing and planned clinical trials and preclinical studies, review and approvals by regulatory authorities of its product candidates, the Company’s commercialization efforts and the Company’s continued ability to raise capital to fund its development. For an additional discussion of risks and uncertainties which could cause the company's actual results, financial condition, performance or achievements to differ from those contained in the forward-looking statements, please refer to the Risk Factors (“Facteurs de Risque") section of the Universal Registration Document filed with the French Financial Markets Authority (“AMF”), which is available on the AMF website or on Innate Pharma’s website, and public filings and reports filed with the U.S. Securities and Exchange Commission (“SEC”), including the Company’s Annual Report on Form 20-F for the year ended December 31, 2022, and subsequent filings and reports filed with the AMF or SEC, or otherwise made public, by the Company. This press release and the information contained herein do not constitute an offer to sell or a solicitation of an offer to buy or subscribe to shares in Innate Pharma in any country. View source version on businesswire.com: Contacts For additional information, please contact: Investors Innate Pharma Henry Wheeler Tel.: +33 (0)4 84 90 32 88 Henry.wheeler@innate-pharma.fr Media Relations NewCap Arthur Rouillé Tel.: +33 (0)1 44 71 00 15 innate@newcap.eu Source: Innate Pharma SA View this news release online at: