KIR3DL2

Positive results with lacutamab from TELLOMAK Phase 2 study in mycosis fungoides presented at ASCO 2024 NK-Cell engager SAR443579/IPH61011 first-in-human study advanced to Phase 2 and initiation of front-line AML Phase 1/2 combination studyUpdated data from dose-escalation part presented at EHA 2024 confirm clinical benefit and durable responses in patients with R/R AML IPH45, proprietary anti Nectin-4 ADC progressing towards Phase 1 in H2 2024 Monalizumab data from AstraZeneca-sponsored Phase 2 study in early NSCLC presented at WCLC Cash position of €102.1 million2 as of June 30, 2024, anticipated cash runway to end of 2025 Conference call to be held today at 2:00 p.m. CEST / 8:00 a.m. EDT Innate Pharma SA (Euronext Paris: IPH; Nasdaq: IPHA) (“Innate” or the “Company”) today reported its consolidated financial results for the six months ended June 30, 2024. The consolidated financial statements are attached to this press release. “We are focused on our growth strategy as we advance our pipeline,” said Hervé Brailly, Chief Executive Officer ad interim of Innate Pharma. “We recently presented Phase 2 results with lacutamab in mycosis fungoides at ASCO and are engaged in discussions with the FDA on next steps in its development. We are also progressing towards Phase 1 for our first and differentiated ADC program IPH45, targeting Nectin-4.” ***** Access to live webcast: https://events.q4inc.com/attendee/127231232 Participants may also join via telephone by registering in advance of the event at https://registrations.events/direct/Q4I953384196 This information can also be found on the Investors section of the Innate Pharma website, www.innate-pharma.com. A replay of the webcast will be available on the Company website for 90 days following the event. ***** 1 Developed by Sanofi 2 Including short term investments (€21.8 million) and non-current financial instruments (€10.3 million) TELLOMAK is a global, open-label, multi-cohort Phase 2 clinical trial evaluating lacutamab in patients with Sézary syndrome and mycosis fungoides. Favorable results from the Phase 2 TELLOMAK study with lacutamab in mycosis fungoides were presented at the American Society of Clinical Oncology (ASCO) 2024 Annual Meeting in June 2024. The data demonstrate that treatment with lacutamab resulted in meaningful antitumor activity, regardless of the KIR3DL2 baseline expression, and an overall favorable safety profile. The global objective response rate was 16.8% (Olsen 2011) and 22.4% (Olsen 2022), including 2 complete responses and 16 partial responses. The Phase 2 KILT (anti-KIR in T Cell Lymphoma) trial, an investigator-sponsored, randomized controlled trial led by the Lymphoma Study Association (LYSA) to evaluate lacutamab in combination with chemotherapy GEMOX (gemcitabine in combination with oxaliplatin) versus GEMOX alone in patients with KIR3DL2-expressing relapsed/refractory PTCL is ongoing and continues to recruit patients. ANKET® is Innate’s proprietary platform for developing next-generation, multi-specific NK cell engagers to treat certain types of cancer. Innate’s pipeline includes five public drug candidates born from the ANKET® platform: SAR443579/IPH6101 (SAR’579; trifunctional anti-CD123 NKp46-CD16 NKCE), SAR445514/IPH6401 (SAR’514 trifunctional anti-BCMA NKp46-CD16 NKCE), IPH62 (anti-B7-H3), IPH67 (target undisclosed, solid tumors) and tetra-specific IPH6501 (anti-CD20 with IL-2v). Several other undisclosed proprietary preclinical targets are being explored. IPH6501 is Innate’s proprietary CD20-targeted IL-2v bearing second-generation ANKET®. In March 2024 the first patient was dosed in the Phase 1/2 clinical trial evaluating IPH6501 in B cell Non-Hodgkin’s lymphoma (B-NHL). The study is planned to enroll up to 184 patients. Innate presented preclinical data of IPH6501 at the ASCO Annual Meeting and European Hematology Association (EHA) Annual congress in June 2024. Preclinical data showed that IPH6501 depletes autologous CD20+ B cells from healthy donors with greater efficacy and lower induction of pro-inflammatory cytokines than a CD20-T-cell engager. IPH6501 also effectively and preferentially stimulates NK cell proliferation from peripheral blood mononuclear cells of R/R NHL patients. The trial-in-progress of the Phase 1/2 study has been presented at the European Hematology Association (EHA) and ASCO in 2024. The Phase 1/2 clinical trial by Sanofi is progressing well, evaluating SAR’579 / IPH6101, a trifunctional anti-CD123 NKp46-CD16 NK-cell engager and ANKET® platform lead asset, in patients with relapsed or refractory acute myeloid leukemia (AML), B-cell acute lymphoblastic leukemia (B-ALL) or high-risk myelodysplastic syndrome (HR-MDS). Updated efficacy and safety results from the dose-escalation part of the Phase 1/2 study with SAR'579 / IPH6101, were shared in an oral presentation at the EHA 2024 Congress. The data demonstrated that SAR’579 continues to show clinical benefit and durable responses along with a favorable safety profile in patients with R/R AML, with 5 complete remissions (4 CR / 1 CRi) achieved at 1 mg/kg, with durable CR (>10 months) observed in 3 patients. In April 2024, Sanofi advanced SAR’579 / IPH6101, to the Phase 2 preliminary dose expansion of the trial. Under the terms of the 2016 research collaboration with Sanofi, the progression to the dose expansion part of the trial has triggered a milestone payment from Sanofi to Innate of €4m. In July 2024, Sanofi initiated a new Phase 1 / Phase 2, randomized, open label, multi-cohort, multi-center study (NCT06508489) assessing the safety, tolerability and preliminary efficacy of SAR’579 / IPH6101 administered in combination with azacitidine and venetoclax in patients with CD123 expressing hematological malignancies in newly diagnosed AML. The Sanofi led Phase 1/2 clinical trial with SAR’514 / IPH6401, a trifunctional anti-BCMA Nkp46-CD16 NK-cell engager, in patients with Relapsed/Refractory Multiple Myeloma and Relapsed/Refractory Light-chain Amyloidosis is ongoing. IPH62 is a NK-cell engager program targeting B7-H3 from Innate’s ANKET® platform under development. Following a research collaboration period and upon candidate selection, Sanofi will be responsible for all development, manufacturing and commercialization. IPH67 is a NK-cell engager program in solid tumors from Innate’s ANKET® platform under development. Following a research collaboration period and upon candidate selection, Sanofi will be responsible for all development, manufacturing and commercialization. Sanofi still retains the option of one additional ANKET® target under the terms of the 2022 research collaboration and license agreement. Innate develops different approaches for the treatment of cancer utilizing its antibody engineering capabilities to deliver novel assets, with its innovative ANKET® platform and is also exploring Antibody Drug Conjugates (ADC) formats. IPH45 is Innate’s proprietary and differentiated exatecan-antibody drug conjugate (ADC) targeting Nectin-4. First preclinical data were presented in an oral presentation at the American Association for Cancer Research (AACR) Annual Meeting 2024. In preclinical studies, IPH45 shows anti-tumor efficacy in vivo, in Nectin-4 expressing tumors including in enfortumab vedotin (EV) refractory models. Importantly, IPH45 shows stronger activity than EV, in multiple urothelial carcinoma patient-derived xenografted (PDX) mice models, across Nectin-4 high and Nectin-4 low expression levels. In addition, IPH45 has anti-tumor activity in combination with anti-PD1 treatment in PD-1 resistant model in vivo and has a favorable safety profile in relevant animal toxicology models. IPH45 continues towards a Phase 1 trial in 2024. The Phase 3 PACIFIC-9 trial run by AstraZeneca evaluating durvalumab (anti-PD-L1) in combination with monalizumab or AstraZeneca’s oleclumab (anti-CD73) in patients with unresectable, Stage III non-small cell lung cancer (NSCLC) who have not progressed following definitive platinum-based concurrent chemoradiation therapy (CRT) is ongoing.After the period, the Independent Data Monitoring Committee recommended the continuation of the Phase 3 PACIFIC-9 trial based on a pre-planned analysis. Updated results from COAST, a Phase 2 study of durvalumab with oleclumab or monalizumab in patients with Stage III unresectable non-small-cell lung cancer were presented at the ASCO 2024 Annual Meeting, in June 2024. In this analysis of updated results from COAST, the combination of durvalumab plus oleclumab or monalizumab increased objective response rate, prolonged progression free survival, and trended toward improved overall survival compared to durvalumab alone. AstraZeneca presented interim results from the randomized NeoCOAST-2 Phase 2 platform trial during the 2024 World Conference on Lung Cancer in September 2024. In this preliminary analysis on the first 60 of 72 patients randomized to Arm 2, monalizumab added to durvalumab plus platinum-based chemotherapy doublet induced a pathological complete response rate of 26.7% [95% CI; 16.1–39.7] and a major pathological response rate of 53.3% [95% CI; 40.0–66.3] which are numerically higher than the durvalumab plus platinum doublet approved regimen. Treatment in Arm 2 showed manageable safety profile and no impact on surgical rate. The NeoCOAST-2 platform study is intended to assess the safety and efficacy of neoadjuvant durvalumab alone or combined with novel immuno-oncology agents and chemotherapy in resectable, early-stage NSCLC, followed by adjuvant treatment with durvalumab with or without the novel agents. The MATISSE Phase 2 clinical trial conducted by Innate in neoadjuvant lung cancer for IPH5201, an anti-CD39 blocking monoclonal antibody developed in collaboration with AstraZeneca, is ongoing and recruitment is on track. Following a pre-planned interim analysis after the period, the MATISSE Phase 2 trial continues according to plans. The investigator-sponsored CHANCES Phase 1 trial of IPH5301 with Institut Paoli-Calmettes is ongoing. Preliminary results will be presented at the upcoming (European Society of Medical Oncology) ESMO Annual Meeting 2024. The abstract, available on the ESMO website, states that IPH5301 was safe and well-tolerated with preliminary signals of monotherapy antitumor activity. In connection with Innate’s previous announcement that it had established an at-the-market (“ATM”) program, on January 16, 2024 Innate filed a new Registration Statement on Form F-3 (Registration No. 333-276164). On February 6, 2024, Innate filed a prospectus supplement relating to its previously established ATM program, pursuant to which it may, from time to time, offer and sell to eligible investors a total gross amount of up to $75 million of American Depositary Shares (“ADS”). Each ADS represents one ordinary share of Innate. As of June 30, 2024, no sales have been made under the program. Takeda made a strategic decision to terminate the license agreement executed in March 2023 for use of selected Innate antibodies in antibody drug-conjugates. Innate will regain full rights to these antibodies in Q4 2024. The key elements of Innate’s financial position and financial results as of and for the six-month period ended June 30, 2024 are as follows: Cash, cash equivalents, short-term investments and financial assets amounting to €102.1 million (€m) as of June 30, 2024 (€102.3m as of December 31, 2023). Revenue and other income amounted to €12.3m in the first half of 2024 (€40.2m in the first half of 2023) and mainly comprised of:Revenue from collaboration and licensing agreements, which mainly resulted from the partial or entire recognition of the proceeds received pursuant to the agreements with AstraZeneca, Sanofi and Takeda. They result from the partial or entire recognition of the proceeds received pursuant to such agreements. They are recognized when the entity's performance obligation is met. They are recognized at a point in time or spread over time according to the percentage of completion of the work that the Company is committed to carry out under these agreements:(i) Revenue from collaboration and licensing agreements for monalizumab decreased by €6.5m to €3.0m in the first half of 2024 (€9.5m in the first half of 2023). This change is mainly due to the recognition of increased revenue in the first six months of 2023. Indeed, as of June 30, 2023, the Company had analyzed the cost base used to calculate the percentage of completion of Phase 1/2 trials in connection with their progress. This analysis led to a reduction in the cost base through a re-estimation of projected expenses. As a result, this adjustment on the cost base had a positive impact on the percentage of completion and led to the recognition of additional revenue of €5.9 million for the first half of 2023 which was not replicated in 2024. (ii) Revenue related to the license and collaboration agreement signed with Sanofi in 2016 increased by €2.0m, to €4.0m for the six months ended June 30, 2024, as compared to €2.0m for the six months ended June 30, 2023. On April 15, 2024, the Company announced the treatment of the first patient in the Phase 2 dose expansion part of the Sanofi-sponsored clinical trial evaluating NK Cell Engager SAR443579/ IPH6101 in various blood cancers. Under the terms of the 2016 agreement, this trial progress triggered a milestone payment of €4.0 million fully recognized in revenue during the first quarter of 2024. This amount was received by the Company on May 17, 2024.As a reminder, the Company announced that, in June 2023, the first patient was dosed in a Sanofi-sponsored Phase 1/2 clinical trial evaluating IPH6401/SAR'514 in relapsed or refractory Multiple Myeloma. As provided by the licensing agreement signed in 2016, Sanofi made a milestone payment of €2.0 million, fully recognized in revenue as of June 30, 2023. This amount was received by the Company on July 21, 2023. (iii) Revenue related to the research collaboration and licensing agreement signed with Sanofi in 2022 decreased by €18.3m, to €0.4m for the six months ended June 30, 2024, as compared to €18.7m for the six months ended June 30, 2023. As previously announced, on January 25, 2023, the Company announced the expiration of the waiting period under the Hart-Scott-Rodino (HSR) Antitrust Improvements Act of 1976 and the effectiveness of the licensing agreement as of January 24, 2023. Consequently, the Company received an upfront payment of €25.0 million in March 2023, including €18.5 million for the exclusive license, €1.5 million for the research activities and €5.0 million for the option on two additional targets. The €18.5 million upfront payment relating to the exclusive license was fully recognized in revenue as of June 30, 2023. The €1.5 million upfront payment is recognized on a straight-line basis over the duration of the research activities that the Company has agreed to carry out. As a result, a €0.2 million has been recognized in revenue as of June 30, 2024 and June 30, 2023. Then, on December 19, 2023, the Company announced that Sanofi had exercised an option for one of the two targets. As a consequence, the Company recognized related income of €2.5 million as of December 31, 2023. This option exercise also resulted in a milestone payment of €15.0 million, including €13.3 million in respect of the exclusive license, which was fully recognized in income as of December 31, 2023, and €1.7 million in respect of research activities to be carried out by the Company, which will be recognized in income on a straight-line basis over the duration of the research activities that the Company has agreed to carry out. Sanofi and Innate will collaborate and work on the research activities defined in the contractual research program. These activities began during the first half of 2024. An amount of €0.2 million has been recognized in revenue as of June 30, 2024. Amounts not recognized in revenue are classified as deferred revenue. (iv) Revenues under the license agreement signed with Takeda in 2023 are nil for the first half of 2024, compared to €4.6 million for the first half of 2023. On April 3, 2023, the Company announced that it has entered into an exclusive license agreement with Takeda under which Innate grants Takeda exclusive worldwide rights to research and develop antibody drug conjugates (ADC) using a panel of selected Innate antibodies against an undisclosed target, with a primary focus in Celiac disease. Takeda will be responsible for the future development, manufacture and commercialization of any potential products developed using the licensed antibodies. As such, the Company considers that the license granted is a right to use the intellectual property, which is granted fully and perpetually to Takeda. The agreement does not stipulate that Innate's activities will significantly affect the intellectual property granted during the life of the agreement. Consequently, the $5.0 million (or €4.6 million) initial payment, received by the Company in May 2023, was fully recognized in revenue as of June 30, 2023. Government funding for research expenditures of €4.1m in the first half of 2024 (€4.9m in the first half of 2023). Operating expenses are €38.7m in the first half of 2024 (€40.6m in the first half of 2023), of which 75.2% (€29.1m) are related to R&D.R&D expenses decreased by €2.4m to €29.1m in the first half of 2024 (€31.5m in the first half of 2023). This change is mainly explained by lower personnel and other R&D expenses by €2.2millions (-15.4%). This decrease is due to an non-recurring amortization charge in the first half of 2023, related to the IPH5201 rights (full amortization of the additional €2.0 million invoice from Orega Biotech following the dosing of the first patient in the Phase 2 MATISSE clinical trial in June 2023). Additionally, direct R&D expenses, which slightly decreased by €0.2 million, remained at €17.1 million, with an acceleration in preclinical spending related to the Antibody-Drug Conjugates (ADC) program offsetting the decrease in expenses related to certain more mature clinical-stage programs. General and administrative (G&A) expenses increased by €0.4m to €9.6m in the first half of 2024 (€9.1m in the first half of 2023) mainly resulting from (i) a €0.4m decrease of personnel expenses mainly due to a reduction of administrative staff, offset by (ii) a €0.3m increase in non-scientific advisory and consulting fees resulting from greater reliance on recruitment agencies, and finally (iii) a €0.5 million increase in other expenses, mainly due to the derecognition of returned spaces in the first half of 2023 (as a reminder, on March 13, 2023, the Company signed an amendment to the lease of the 'Le Virage' building, aimed at reducing the area of leased premises) and the sale of related furniture during the same period, which led to an exceptional reduction in these charges in the first half of 2023. A net financial gain of €1.5m in the first half of 2024 (€2.1m in the first half of 2023). This variance mainly results from the unfavorable evolution of the dollar exchange rate and its impact on foreign exchange recorded during the first half of 2024. The negative currency impact was offset by an increase in the fair value of certain financial instruments. A net loss of €24.8m for the first half of 2024 (net income of €1.7m for the first half of 2023). The table below summarizes the IFRS consolidated financial statements as of and for the six months ended June 30, 2024, including 2023 comparative information.

In heavily pretreated patients with mycosis fungoides, treatment with lacutamab results in meaningful anti-tumor activity regardless of baseline KIR3DL2 expression level. Lacutamab was well-tolerated with a safety pro with prior studies. Innate will host a virtual KOL event on Tuesday, June 11, 2024 at 4:00PM CEST (10:00AM EDT). MARSEILLE, France--(BUSINESS WIRE)-- Regulatory News: Innate Pharma SA (Euronext Paris: IPH; Nasdaq: IPHA) (“Innate” or the “Company”) announced favorable results from the Phase 2 TELLOMAK study with lacutamab in mycosis fungoides (MF). The results were presented at the ASCO 2024 Annual Meeting, in Chicago, Illinois. As of October 13, 2023, data cutoff, MF patients (n=107) received a median of 4 prior systemic therapies and had a median follow-up of 11.8 months. The data demonstrate that treatment with lacutamab resulted in meaningful antitumor activity, regardless of the KIR3DL2 baseline expression, and an overall favorable safety profile. The global objective response rate (ORR) was 16.8% (Olsen 2011) and 22.4% (Olsen 2022), including 2 complete responses (CR) and 16 partial responses (PR). In patients expressing a baseline KIR3DL2 ≥ 1%, the ORR was 20.8% (Olsen 2011) and 29.2% (Olsen 2022). Median progression-free survival was 10.2 months (95% CI 6.5, 16.8) for all MF patients and 12.0 months (95% CI 5.6, 20.0) in the KIR3DL2 ≥ 1% group. Time to response was 1.0 month (95% CI 1, 5). “The anti-tumor activity observed in the Phase 2 TELLOMAK trial confirms that treatment with lacutamab achieves clinically meaningful outcomes for heavily pretreated patients with mycosis fungoides regardless of baseline KIR3DL2 expression level,” commented Dr. Sonia Quaratino, Chief Medical Officer of Innate Pharma. “These results are very promising, considering the number of prior systemic therapies that the patients had received before, and the lack of available drugs. These data support further development of lacutamab to bring improved treatments to patients with cutaneous T cell lymphomas.” Prof. Pierluigi Porcu, Director, Division of Hematologic Malignancies and Hematopoietic Stem Cell Transplantation, Sidney Kimmel Cancer Center, Jefferson Health, Philadelphia, and Principal Investigator in the TELLOMAK study, added: “Mycosis fungoides patients have few efficacious and safe therapeutic options at advanced stages. It is promising to see lacutamab achieving remarkable efficacy along with excellent tolerability in this heavily pre-treated population. We express our gratitude to the investigators, clinical research coordinators, patients and caregivers involved in the TELLOMAK program.” Efficacy in MF patients and according to KIR3DL2 subgroup ITT set All MF N=107 KIR3DL2 ≥ 1% N=48 KIR3DL2 <1% N=59 Olsen 2011 Global ORR % (95%CI) 16.8% (10.9, 25.0) 20.8% (11.7, 34.3) 13.6% (7.0, 24.5) Olsen 2022 Global ORR % (95%CI) 22.4% (15.6, 31.2) 29.2% (18.2, 43.2) 16.9% (9.5, 28.5) CR n (%) 2 (1.9) 2 (4.2) 0 (0.0) PR n (%) 16 (15.0) 8 (16.7) 8 (13.6) SD1 n (%) 74 (69.2) 30 (62.5) 44 (74.6) PD n (%) 13 (12.1) 6 (12.5) 7 (11.9) NE n (%) 2 (1.9) 2 (4.2) 0 (0.0) Time to global response (mo) median (range) 1.0 (1-5) 1.0 (1-5) 1.9 (1-4) Skin response (n=107) % (95%CI) 29.0% (21.2;38.2) 33.3% (21.7;47.5) 25.4% (16.1;37.8) PFS (months) median (95%CI) 10.2 (6.5, 16.8) 12.0 (5.6, 20.0) 8.5 (6.5, 17.5) Virtual KOL Event Details Tuesday, June 11, 2024 at 4:00PM CEST (9:00AM EDT) The live webcast will be available at the following link: Participants may also join via telephone using the following registration link: This information can also be found on the Investors section of the Innate Pharma website, . A replay of the webcast will be available on the Company website for 90 days following the event. About Lacutamab Lacutamab is a first-in-class anti-KIR3DL2 humanized cytotoxicity-inducing antibody that is currently in clinical trials for treatment of cutaneous T-cell lymphoma (CTCL), an orphan disease, and peripheral T cell lymphoma (PTCL). Rare cutaneous lymphomas of T lymphocytes have a poor prognosis with few efficacious and safe therapeutic options at advanced stages. KIR3DL2 is an inhibitory receptor of the KIR family, expressed by approximately 65% of patients across all CTCL subtypes and expressed by up 90% of patients with certain aggressive CTCL subtypes, in particular, Sézary syndrome. It is expressed by up to 50% of patients with mycosis fungoides and peripheral T-cell lymphoma (PTCL). It has a restricted expression on normal tissues. Lacutamab is granted European Medicines Agency (EMA) PRIME designation and US Food and Drug Administration (FDA) granted Fast Track designation for the treatment of patients with relapsed or refractory Sézary syndrome who have received at least two prior systemic therapies. Lacutamab is granted orphan drug status in the European Union and in the United States for the treatment of CTCL. About TELLOMAK TELLOMAK (NCT03902184) is a global, open-label, multi-cohort Phase 2 clinical trial in patients with Sézary syndrome and mycosis fungoides (MF) in the United States and Europe. Specifically: Cohort 1: lacutamab being evaluated as a single agent in approximately 60 patients with Sézary syndrome who have received at least two prior systemic therapies, including mogamulizumab. The Sézary syndrome cohort of the study could enable the registration of lacutamab in this indication. Cohort 2: lacutamab being evaluated as a single agent in patients with MF that express KIR3DL2, as determined at baseline with a Simon 2-stage design. Cohort 3: lacutamab being evaluated as a single agent in patients with MF that do not express KIR3DL2, as determined at baseline, with a Simon-2 stage design. All comers: lacutamab being evaluated as a single agent in patients with both KIR3DL2 expressing and non-expressing MF to explore the correlation between the level of KIR3DL2 expression and treatment outcomes utilizing a formalin-fixed paraffin embedded (FFPE) assay under development as a companion diagnostic. The trial is fully enrolled. The primary endpoint of the trial is objective global response rate. Key secondary endpoints are progression-free survival, duration of response, overall survival, quality of life, pharmacokinetics and immunogenicity and adverse events. 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 LinkedIn and X. 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, 2023, 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. 1 SD includes 2 pts uPR confirmed after DCO & 1 new uPR after DCO. 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:

First preclinical data set for IPH45, a pre-IND anti-Nectin-4 Antibody Drug Conjugate, presented as an oral presentation at AACR 2024 Progression of Sanofi-developed NK Cell Engager SAR443579/IPH6101 to Phase 2 in blood cancers Five ASCO Annual Meeting 2024 abstracts: Final TELLOMAK Phase 2 data for lacutamab in Mycosis Fungoides Two posters on IPH6501, Innate's second generation ANKET® in B‑cell Non-Hodgkin's Lymphoma AstraZeneca to present poster on updated results for monalizumab from Phase 2 stage III unresectable NSCLC trial Monalizumab SCLC Phase 2 MOZART trial poster Cash position of €113.9 million1 as of March 31, 2024 (not including the €4.0 million payment to be received from Sanofi), anticipated cash runway into end 2025 Conference call to be held today at 2:00 p.m. CEST / 8:00 a.m. EDT MARSEILLE, France--(BUSINESS WIRE)-- Regulatory News: Innate Pharma SA (Euronext Paris: IPH; Nasdaq: IPHA) (“Innate” or the “Company”) today reported its consolidated financial results for the quarter ending March 31, 2024. “We are executing our strategy of building on our partnered drug candidates while advancing our next generation of proprietary medicines,” said Hervé Brailly, Chief Executive Officer ad interim of Innate Pharma. “Our second generation ANKET®, IPH6501 began clinical development for NHL. We presented preclinical data for IPH45, our Nectin-4 ADC, at the recently held AACR Annual Meeting. Our partner Sanofi also advanced SAR443579, a tri-functional NK Cell Engager targeting CD123, to Phase 2 in blood cancer. We expect to have several data presentations at ASCO, including data from the TELLOMAK Phase 2 trial with lacutamab in mycosis fungoides, as we prepare to submit an IND for IPH45 later this year.” Webcast and conference call will be held today at 2:00pm CEST (8:00am EDT) The live webcast will be available at the following link: Participants may also join via telephone using the following registration link: This information can also be found on the Investors section of the Innate Pharma website, . A replay of the webcast will be available on the Company website for 90 days following the event. 1 Including short term investments (€21.3 million) and non-current financial instruments (€10.1 million). Pipeline highlights: Lacutamab (anti-KIR3DL2 antibody): Cutaneous T Cell lymphoma TELLOMAK is a global, open-label, multi-cohort Phase 2 clinical trial evaluating lacutamab in patients with Sézary syndrome and mycosis fungoides (MF). Top-line results in MF patients will be presented at the ASCO Annual Meeting 2024 being held May 31 – June 4 in Chicago. Title of the abstract is: Lacutamab in patients with relapsed and/or refractory mycosis fungoides: results from the TELLOMAK Phase 2 trial. The full abstract will be released at 5:00 PM ET on Thursday, May 23, 2024 on the ASCO Annual Meeting website. In January 2024, Innate announced that the US Food and Drug Administration (FDA) has lifted the partial clinical hold previously placed on the lacutamab IND on October 2023 following a patient death in the TELLOMAK study. The FDA decision to lift the partial clinical hold is based on the FDA review of the fatal case which Innate, together with a steering committee of independent experts, determined to be related to aggressive disease progression and lacutamab unrelated. Peripheral T Cell lymphoma (PTCL) The Phase 2 KILT (anti-KIR in T Cell Lymphoma) trial, an investigator-sponsored, randomized controlled trial led by the Lymphoma Study Association (LYSA) to evaluate lacutamab in combination with chemotherapy GEMOX (gemcitabine in combination with oxaliplatin) versus GEMOX alone in patients with KIR3DL2-expressing relapsed/refractory PTCL is ongoing and continues to recruit patients. ANKET® (Antibody-based NK cell Engager Therapeutics): ANKET® is Innate’s proprietary platform for developing next-generation, multi-specific NK cell engagers to treat certain types of cancer. Innate’s pipeline includes five public drug candidates born from the ANKET® platform: SAR443579 (SAR’579/IPH6101) (CD123-targeted), SAR445514 (SAR’514/IPH6401) (BCMA-targeted), IPH62 (B7-H3-targeted), IPH67 (target undisclosed, solid tumors) and tetra-specific IPH6501 (CD20-targeted with IL‑2v). Several other undisclosed proprietary preclinical targets are being explored. IPH6501 (proprietary) IPH6501 is Innate’s proprietary CD20-targeted IL-2v bearing second-generation ANKET®. Innate will present 2 posters on IPH6501 at the upcoming ASCO Annual Meeting 2024, being held from May 31 to June 4 in Chicago. Titles of the abstract are: A Phase 1/2, Open-Label, Multicenter Trial Investigating the Safety, Tolerability, and Preliminary Antineoplastic Activity of IPH6501 in Patients With Relapsed and/or Refractory CD20-expressing Non-Hodgkin Lymphoma Preclinical assessment of IPH6501, a first-in-class IL2v-armed tetraspecific NK Cell Engager directed against CD20 for R/R B-NHL, in comparison to a CD20-targeting T Cell Engager The full abstracts will be released at 5:00 PM ET on Thursday, May 23, 2024 on the ASCO Annual Meeting website. In March 2024 the first patient was dosed in the Phase 1/2 clinical trial evaluating IPH6501 in B cell Non-Hodgkin’s lymphoma (B-NHL). The study is planned to enroll up to 184 patients. SAR443579, SAR445514, IPH62 and IPH67 (under development by Sanofi) SAR443579/IPH6101 The Phase 1/2 clinical trial, currently under development, by Sanofi is progressing well, evaluating SAR443579 / IPH6101, a trifunctional anti-CD123 NKp46×CD16 NK cell engager and ANKET® platform lead asset, in patients with relapsed or refractory acute myeloid leukemia (R/R AML), B-cell acute lymphoblastic leukemia (B-ALL) or high-risk myelodysplastic syndrome (HR-MDS). In April 2024, Sanofi advanced SAR443579 / IPH6101, to the Phase 2 dose expansion of the trial. Under the terms of the 2016 research collaboration with Sanofi, the progression to the dose expansion part of the trial has triggered a milestone payment from Sanofi to Innate of €4m (which has been booked as revenue in the first quarter but had not been received from Sanofi in the quarter, and has therefore not been included in the cash position). SAR445514/IPH6401 The Sanofi led Phase 1/2 clinical trial with SAR’514 / IPH6401, a trifunctional anti-BCMA Nkp46xCD16 NK cell engager, in patients with Relapsed/Refractory Multiple Myeloma and Relapsed/Refractory Light-chain Amyloidosis is ongoing. IPH62 IPH62 is a NK cell engager program targeting B7-H3 from Innate’s ANKET® platform under development. Upon candidate selection, Sanofi will be responsible for all development, manufacturing and commercialization. IPH67 IPH67 is a NK cell engager program in solid tumors from Innate’s ANKET® platform under development. Following a research collaboration period, Sanofi will be responsible for all development, manufacturing and commercialization. Sanofi still retains the option of one additional ANKET® target under the terms of the 2022 research collaboration and license agreement. Antibody Drug Conjugates: Innate develops different approaches for the treatment of cancer utilizing its antibody engineering capabilities to deliver novel assets, with its innovative ANKET® platform and is also exploring Antibody Drug Conjugates (ADC) formats. Beyond its proprietary programs, Innate has an ongoing agreement with Takeda on ADCs. IPH45 (Nectin-4 ADC): IPH45 is Innate’s proprietary and differentiated exatecan-Antibody Drug Conjugate (ADC) targeting Nectin-4. First preclinical data were presented in an oral presentation at the American Association for Cancer Research (AACR) Annual Meeting 2024. In preclinical studies, IPH45 shows anti-tumor efficacy in vivo, in Nectin-4 expressing tumors including in Enfortumab Vedotin (EV) refractory models. Importantly, IPH45 shows stronger activity than EV, in multiple urothelial carcinoma patient-derived xenografted (PDX) mice models, across Nectin-4 high and Nectin-4 low expression levels. In addition, IPH45 has anti-tumor activity in combination with anti-PD1 treatment in PD-1 resistant model in vivo and has a favorable safety pro relevant animal toxicology models. IPH45 continues towards IND filing in 2024. Monalizumab (anti-NKG2A antibody), partnered with AstraZeneca: The Phase 3 PACIFIC-9 trial run by AstraZeneca evaluating durvalumab (anti-PD-L1) in combination with monalizumab or AstraZeneca’s oleclumab (anti-CD73) in patients with unresectable, Stage III non-small cell lung cancer (NSCLC) who have not progressed following definitive platinum-based concurrent chemoradiation therapy (CRT) is ongoing. AstraZeneca will present a poster at ASCO titled: “Updated results from COAST, a phase 2 study of durvalumab (D) ± oleclumab (O) or monalizumab (M) in patients (pts) with stage III unresectable non-small cell lung cancer (uNSCLC).” A poster at ASCO will also be presented titled “A phase II trial of monalizumab in combination with durvalumab (MEDI4736) plus platinum-based chemotherapy for first-line treatment of extensive stage small cell lung cancer (MOZART): Hoosier Cancer Research Network LUN21-530 study.” IPH5201 (anti-CD39), partnered with AstraZeneca: The MATISSE Phase 2 clinical trial conducted by Innate in neoadjuvant lung cancer for IPH5201, an anti-CD39 blocking monoclonal antibody developed in collaboration with AstraZeneca, is ongoing and recruitment is on track. IPH5301 (anti-CD73): The investigator-sponsored CHANCES Phase 1 trial of IPH5301 by Institut Paoli-Calmettes is ongoing. Corporate Update: Early January 2024, two new Executive Board members were appointed. Arvind Sood, Executive Vice President (EVP), President of US Operations, Dr Sonia Quaratino, EVP, Chief Medical Officer, joining Hervé Brailly, interim Chief Executive Officer and Yannis Morel, EVP, appointed Chief Operating Officer. In connection with Innate’s previous announcement that it had established an at-the-market (“ATM”) program, on January 16, 2024 Innate filed a new Registration Statement on Form F-3 (Registration No. 333-276164). On February 6, 2024, Innate filed a prospectus supplement relating to its previously established ATM program, pursuant to which it may, from time to time, offer and sell to eligible investors a total gross amount of up to $75 million of American Depositary Shares (“ADS”). Each ADS represents one ordinary share of Innate. As of March 31, 2024, no sales have been made under the program. Financial Results: Cash, cash equivalents and financial assets of the Company amounted to €113.9 million as of March 31, 2024. At the same date, financial liabilities amounted to €37.7 million. Cash, cash equivalents and financial assets as of March 31, 2024 do not include the €4.0 million payment to be received from Sanofi. Revenues for the first three months of 2024 amounted to €6.6 million (€26.0 million for the same period in 2023). For the three-month period, ended March 31, 2024, revenue from collaboration and licensing agreements mainly results from the partial or entire recognition of the proceeds received pursuant to the agreements with AstraZeneca and Sanofi. 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 LinkedIn and X. 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, 2023, 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: