Innate Pharma Reports Full Year 2023 Financial Results and Business Update

• Positive final results of lacutamab TELLOMAK Phase 2 trial in Sézary syndrome presented at ASH Annual Meeting 2023; final data in mycosis fungoides to be shared at an upcoming medical congress
• Licensing of a fourth NK cell engager ANKET^® by Sanofi, triggering a €15m payment to Innate; ANKET^® partnered assets progressing well with two molecules in clinical trials
• First patient dosed in Phase 1/2 clinical trial with IPH6501, a proprietary second generation ANKET^® in B-cell Non-Hodgkin's Lymphoma
• IPH45, a pre-IND anti-Nectin-4 Antibody Drug Conjugate, selected for oral presentation at AACR 2024
• New Executive Board formed with Hervé Brailly, interim Chief Executive Officer, Yannis Morel, Chief Operating Officer, Sonia Quaratino, Chief Medical Officer, and Arvind Sood, President of US Operations
• Cash position of €102.3 million¹ as of December 31, 2023 excluding the €15m from Sanofi, anticipated cash runway to end of 2025
• Conference call to be held today at 2:00 p.m. CET / 9:00 a.m. EDT

Regulatory News:

Innate Pharma SA (PARIS:IPH, NASDAQ:IPHA) ("Innate" or the "Company") today reported its consolidated financial results for the year ending December 31, 2023. The consolidated financial statements are attached to this press release.

"We ended 2023 with a cash runway to the end of 2025 and achieved significant milestones in advancing our pipeline," said Hervé Brailly, Chief Executive Officer ad interim of Innate Pharma. "We reported positive data with lacutamab in Sézary syndrome, began Phase 1 testing of our proprietary, second-generation ANKET^® IPH6501 and secured further validation of our ANKET^® platform with Sanofi having licensed four ANKET^® candidates for hematologic malignancies and solid tumors. The Phase 3 trial for monalizumab in non-small lung cancer that is being led by Astra Zeneca continues to advance. Looking ahead to 2024, we expect notable milestones including final results from the TELLOMAK Phase 2 trial with lacutamab in mycosis fungoides, and progressing our first proprietary ADC program, IPH45 towards an IND filing."

Pipeline highlights:

Lacutamab (anti-KIR3DL2 antibody):

Cutaneous T Cell lymphoma

• Innate reported positive final data from the Phase 2 TELLOMAK study in Sézary syndrome at the American Society of Hematology (ASH) 2023 Annual Congress. Data demonstrate that lacutamab showed robust clinical activity and an overall favorable safety profile. In this heavily pre-treated population, post-mogamulizumab, with a median of five prior lines of therapy, the global confirmed objective response rate (ORR) was 37.5% (21/56). Confirmed ORR in the skin was 46.4% (26/56) and confirmed ORR in the blood was 48.2% (27/56). Median progression-free survival was 8.0 months (95% confidence interval [CI] 4.7-21.2).
• In 2023, Innate reported interim data with lacutamab in mycosis fungoides (MF) patients at the EORTC Cutaneous Lymphoma Tumour Group Annual Meeting (September 2023) and the 17^th International Conference on Malignant Lymphoma (June 2023). The interim data set confirmed clinical activity and favorable safety profile of lacutamab in line with the Phase 1 data.
  • The top-line results in MF patients are currently being analyzed and Innate intends to present the data in 2024 at a medical conference.
• 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)

• Despite objective responses observed, the Company-sponsored Phase 1b clinical trial evaluating lacutamab as monotherapy in patients with KIR3DL2-expressing refractory/relapsing PTCL will not be reopened to recruitment as the prespecified threshold for meaningful clinical activity was not reached.
• At the ASH Annual Congress 2023, Innate presented a poster with preclinical data demonstrating a synergistic effect between lacutamab and chemotherapy in preclinical models of PTCL, supporting the rationale for combination strategy in this clinical indication.
• The Phase 2 KILT (anti-KIR in T Cell Lymphoma) trial, an investigator-sponsored, randomized 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.

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.

SAR'579, SAR'514, IPH62 and IPH67 (partnered with Sanofi)

SAR443579/IPH6101

• The Phase 1/2 clinical trial 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).
  • At the ASH Annual Congress 2023, Sanofi reported updated efficacy and safety results and data across all dose levels tested for SAR443579. As of October 23, 2023, 43 patients (42 R/R AML and 1 HR-MDS) across 8 Dose Levels (DLs) at 10 – 6000 μg/kg/dose were included. 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. In DLs with a highest dose of 1000 μg/kg QW, 5/15 AML (33.3%) patients achieved a CR (4 CR / 1 CRi) as of the cut-off date. As of the data cut-off on October 23, 2023, two responders remain in remission after more than 12 and 14 months of treatment. SAR443579 was well tolerated up to doses of 6000 μg/kg QW with observed clinical benefit in patients with R/R AML. The results are consistent with the predicted favorable safety profile.
  • Preliminary Pharmacokinetics (PK) and Pharmacodynamic (PD) Analysis of the CD123 NK Cell Engager SAR'579/IPH6101 in patients with relapsed or refractory AML, B-ALL or HR-MDS were presented during the ESMO (European Society for Medical Oncology) Congress 2023.
• The U.S. Food and Drug Administration (FDA) has granted Fast Track Designation for SAR'579 / IPH6101 for the treatment of acute myeloid leukemia.

SAR'514/IPH6401

• The Phase 1/2 clinical trial with SAR'514 / IPH6401, a trifunctional anti-BCMA Nkp46xCD16 NK cell engager, led by Sanofi, in patients with Relapsed/Refractory Multiple Myeloma and Relapsed/Refractory Light-chain Amyloidosis is ongoing.

IPH62

• As announced on December 19, 2022, Sanofi licensed IPH62, a NK cell engager program targeting B7-H3 from Innate's ANKET^® platform. Upon candidate selection, Sanofi will be responsible for all development, manufacturing and commercialization. Under the terms of the research collaboration and license agreement signed in December 2022, Innate received a €25m upfront payment and is eligible for up to €1.35bn total in preclinical, clinical, regulatory and commercial milestones plus royalties on potential net sales.

IPH67

• In December 2023, Sanofi exercised its option to license a NK cell engager program in solid tumors from Innate's ANKET^® 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. Innate received a €15m payment as option exercise.

IPH6501 (proprietary)

• In March 2024 the first patient was dosed in the Phase 1/2 clinical trial evaluating IPH6501, Innate's proprietary CD20-targeted IL-2v bearing second-generation ANKET^® in B cell Non-Hodgkin's lymphoma (B-NHL). The study is ongoing and planned to enroll up to 184 patients.

• Innate presented preclinical data on IPH6501 at the European Hematology Association (EHA) 2023 congress. In preclinical settings, IPH6501 was shown to induce NK cell proliferation and to trigger high NK cell cytotoxicity against CD20+ target cells in in vitro assays, in ex vivo assays with relapse/refractory (R/R) B-NHL patient samples who received at least one prior treatment, as well as in in vivo studies in non-human primates. A surrogate of IPH6501 mediated a potent anti-tumor activity in vivo in CD20+ tumor models in mice. In addition, in ex vivo assays with R/R B-NHL patient samples, IPH6501 was shown to be more efficient than a T-cell engager targeting CD20.

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.

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.

Antibody Drug Conjugates:

• Fueling its R&D pipeline, Innate continues to develop different approaches for the treatment of cancer utilizing its antibody engineering capabilities to deliver novel assets, with its innovative ANKET^® platform and 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 Nectin-4 targeting antibody drug conjugate including a Topoisomerase I inhibitor payload. IPH45 continues towards IND filing this year.
• Innate will share first preclinical data with IPH45 in an oral presentation at the American Association for Cancer Research (AACR) 2024.

Takeda license agreement:

• In April 2023, Innate 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. Under the terms of the license agreement, Innate received a $5m upfront payment and is eligible to receive up to $410m in future development, regulatory and commercial milestones if all milestones are achieved during the term of the agreement, plus royalties on potential net sales of any commercial product resulting from the license.

Corporate Update:

• On April 26, 2023, Innate announced the establishment of an At-The-Market (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 American Depositary Shares ("ADS"). Each ADS representing one ordinary share of Innate. As of December 31, 2023, the balance available under our April 2023 sales agreement remains at $75 million.
• Dr. Sonia Quaratino, MD, PhD, has been appointed as Executive Vice President and Chief Medical Officer of Innate Pharma, effective October 2023.
• On December 18, 2023, Innate announced that Mondher Mahjoubi has resigned from his position as Chief Executive Officer (CEO) and Chairman of the Executive Board of the Company, effective as of January 2024. Hervé Brailly, Innate Pharma's Chairman of the Supervisory Board, former CEO and co-founder was appointed as interim CEO and Chairman of the Executive Board while a permanent successor is sought.
• Irina Staatz-Granzer, who has been Vice-Chairwoman of the Supervisory Board for several years was appointed Chairwoman of the Supervisory Board.

Post period event

• Early January 2024, Innate announced that it has strengthened the Company's leadership and corporate governance with the appointment of two new Executive Board members. 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.
• Innate announced that Arvind Sood had joined the Company in a newly created position of Executive Vice President and President of US Operations.

Financial highlights for 2023:

The key elements of Innate's financial position and financial results as of and for the year ended December 31, 2023 are as follows:

• Cash, cash equivalents, short-term investments and financial assets amounting to €102.3 million (€m) as of December 31, 2023 (€136.6m as of December 31, 2022), including financial instruments amounting to €9.8m (€35.1m as of December 31, 2022). Cash, cash equivalents as of December 31, 2023 do not include the €15.0 million payment made by Sanofi following the exercise of the license option announced in December 2023. This amount was received by the Company in January 2024.
• As of December 31, 2023, financial liabilities amount to €39.9m (€42.3m as of December 31, 2022). This change is mainly due to loan repayments.
• Revenue and other income from continuing operations amounted to €61.6m in 2023 (2022: €57.7m, +6.9%). It mainly comprises revenue from collaboration and licensing agreements (€51.9m in 2023 vs €49.6m in 2022, +4.7%), and research tax credit (€9.7m in 2023 vs €7.9m in 2022, +22.8%):
  • 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 results from the partial or entire recognition of the proceeds received pursuant to the agreements with AstraZeneca, Sanofi and Takeda. They are recognized when the entity's performance obligation is met. Their accounting is made 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 €12.9m to €9.5m in 2023 ( €22.4m in 2022). This change mainly results from the transaction price increase of €13.4m ($14.0m), in the first half of 2022, triggered by the launch of the "PACIFIC-9" Phase 3 trial announced on April 29, 2022. As a reminder, this increase in the transaction price generated a €12.6 million favorable cumulative adjustment in the revenue related to monalizumab agreements as of December 31,2022;
    • (ii) Revenue related to the research collaboration and licensing agreement signed with Sanofi in 2022 amounted €34.7m as of December 31, 2023. 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 €25.0m in March 2023, including €18.5m for the exclusive license, €1.5m for the research work and €5.0m for the two additional targets options, for which the Company will recognize the related revenues either at the reporting date or three years after the effective date. The €18.5m upfront payment relating to the exclusive license has been fully recognized in revenue since June 30, 2023. On December 19, 2023, the Company announced that Sanofi had exercised one of the two license options for a new program based on the Company's ANKET^® platform. This decision triggered a milestone payment of €15.0m, including €13.3m for the exclusive license, fully recognized in revenue as of December 31, 2023, and €1.7m for research work to be carried out by the Company as well as the recognition in revenue of an amount of €2.5m initially received in March 2023 in connection with this option;
    • (iii) Revenue related to the license and collaboration agreement signed with Sanofi in 2016 decreased by €2.0m, to €2.0m for year ended December 31, 2023, as compared to €4.0m for year ended December 31, 2022. The Company announced that, in June 2023, the first patient was dosed in a Sanofi-sponsored Phase 1/2 clinical trial evaluating SAR'514/IPH6401 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 since of June 30, 2023. This amount was received by the Company on July 21, 2023. As a reminder, the revenue recognized 2022 mainly resulted from Sanofi's decision to advance SAR'514/IPH6401 into investigational new drug (IND)- enabling studies. This decision triggered a €3.0 million milestone payment from Sanofi to the Company, fully recognized in revenue as of June 30, 2022;
    • (iv) Revenue related to the licensing agreement signed with Takeda in 2023 amounted €4.6m for year ended December 31, 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 $5.0m (or €4.6m) initial payment, received by the Company in May 2023, was fully recognized in revenue since June 30, 2023.
  • The research tax credit (CIR) of €9.7m of as December 31, 2023 (€7.9m for year ended December 31 December, 2022, including 2022 fiscal year CIR for an amount of €9.2 million reduced by €1.3 million related to a provision following the tax inspection carried out in 2022 by the French tax authorities).
• Operating expenses from continuing operations and before impairment amounted to €74.3m in 2023 (2022: €74.1m, +0.3%):
  • General and administrative (G&A) expenses from continuing activities amounted to €18.3m in 2023 (2022: €22.4m, -18.5%). This variation results cumulatively from (i) a reduction in personnel expenses, (ii) a reduction in non-scientific fees, (iii) the pursuit of cost savings (reduction in office space), (iv) a reclassification of expenses relating to the support of R&D laboratory activities (maintenance, depreciation of R&D equipment) in the amount of €1.0 million.
  • Research and development (R&D) expenses from continuing activities amounted to €56.0m in 2023 (2022: €51.7m, +8.4%). This change was mainly due to an increase in direct research and development expenses, notably for non-clinical development programs, partially offset by a decrease in expenses for clinical programs over the period. Indirect research and development expenses increased, mainly in the fields of personnel costs and depreciation, amortization and impairment.
• As a reminder, as of December 31, 2022, the Company recognized the full impairment of the avdoralimab intangible asset (anti-C5aR rights) for an amount of €41,0m (non-cash expense) following the Company's decision to stop avdoralimab development in bullous pemphigoid indication in inflammation.
• A net financial income of €5.1m in 2023 (2022: €0.5m loss).
• Net income from Lumoxiti discontinued operations are nil for year ended December 31, 2023 as compared to a net loss of €0.1m for year ended December 31, 2022 corresponding to residual costs associated with the transfer of activities to AstraZeneca. This transfer has now been completed.
• A net loss of €7.6m in 2023 (2022: net loss of €58.1m).

The table below summarizes the IFRS consolidated financial statements as of and for the year ended December 31, 2023, including 2022 comparative information.

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 www.innate-pharma.com and follow us on Twitter and LinkedIn.

Information about Innate Pharma shares:

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, 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 http://www.amf-france.org 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.

Summary of Consolidated Financial Statements and Notes as of December 31, 2023

Revenue and other income

The following table summarizes operating revenue for the periods under review:

Revenue from collaboration and licensing agreements

Revenue from collaboration and licensing agreements from continuing operations increased by €2.3 million, to €51.9 million for the year ended December 31, 2023, as compared to €49.6 million for the year ended December 31, 2022. These revenues mainly result from the partial or entire recognition of the proceeds received pursuant to the agreements with AstraZeneca, Sanofi and Takeda. They are recognized when the entity's performance obligation is met. Their accounting is made 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. The evolution in 2023 is mainly due to:

• A €12.9 million decrease in revenue related to monalizumab to €9.5 million for the year ended December 31, 2023, as compared to €22.4 million for the year ended December 31, 2022. This decrease is mainly explained by the transaction price increase of €13.4 million ($14.0 million) in the first half of 2022 triggered by the launch of the "PACIFIC-9" Phase 3 trial on April 28, 2022. As a reminder, this change in the transaction price generated a €12.6 million favorable cumulative adjustment in the revenue related to monalizumab agreements over the period. As of December 31, 2023, the deferred revenue related to monalizumab amounts to €5.2 million entirely classified as "Deferred revenue—Current portion" in connection with the maturity of Phase 1/2 trials;
• Revenue related to IPH5201 are nil for the year ended December 31, 2023. The €4.7 million revenue for year ended December 31, 2022 resulted from the entire recognition in revenue of the $5.0 million milestone payment received from AstraZeneca following the signature on June 1, 2022 of an amendment to the initial contract signed in October 2018. As a reminder, this amendment sets the terms of the collaboration following AstraZeneca's decision to advance IPH5201 to a Phase 2 study. The Company conducts the study. Both parties share the external cost related to the study and incurred by the Company and AstraZeneca provides products necessary to conduct the clinical trial;
• As a reminder, during the 2022 first semester, the Company received from AstraZeneca a notice that it will not exercise its option to license the four preclinical programs covered in the "Future Programs Option Agreement". This option agreement was part of the 2018 multi-term agreement between AstraZeneca and the Company under which the Company received an upfront payment of $20.0 million (€17.4m). Innate has now regained full rights to further develop the four preclinical molecules. Consequently, the entire initial payment of $20.0 million, or €17.4 million was recognized as revenue as of June 30, 2022;
• The recognition of €34.7 million in revenue as of December 31, 2023, relating to the research collaboration and licensing agreement signed with Sanofi in 2022. 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 €25.0m in March 2023, including €18.5m for the exclusive license, €1.5m for the research work and €5.0m for the two additional targets options, for which the Company will recognize the related revenues either at the reporting date or three years after the effective date. The €18.5m upfront payment relating to the exclusive license has been fully recognized in revenue since June 30, 2023. On December 19, 2023, the Company announced that Sanofi had exercised one of the two license options for a new program based on the Company's ANKET^® platform. This decision triggered a milestone payment of €15.0m, including €13.3m for the exclusive license, fully recognized in revenue as of December 31, 2023, and €1.7m for research work to be carried out by the Company. Following the notification of the exercise of the option, the Company also recognized in revenue an amount of €2.5m initially received in March 2023 and related to this option. The cumulative payments of €3.2m received for research work are recognized on a straight-line basis over the duration of the research work that the Company has agreed to carry out. As of December 31, 2023, the Company recognize in revenue an amount of €0.4 million based on the stage of completion of this work. The remaining amount of €2.8 million is recognized in deferred-revenue. Sanofi still retains a license option for an additional ANKET^® target, in accordance with the license agreement. Consequently, the corresponding upfront payment is also recognized in deferred-revenue as of December 31, 2023 for an amount of €2.5m;
• A €2.0 million decrease in revenue from the collaboration and research license agreement with Sanofi, to €2.0 million for the year ended December 31, 2023, as compared to €4.0 million for the year ended December 31, 2022. The Company announced that, in June 2023, the first patient was dosed in a Sanofi-sponsored Phase 1/2 clinical trial evaluating SAR'514/IPH6401 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 since of June 30, 2023. This amount was received by the Company on July 21, 2023. As a reminder, the revenue recognized 2022 mainly resulted from Sanofi's decision to advance SAR'514/IPH6401 into investigational new drug (IND)- enabling studies. This decision triggered a €3.0 million milestone payment from Sanofi to the Company, fully recognized in revenue as of June 30, 2022;
• The recognition of €4.6 million in revenue as of December 31, 2023, relating to the licensing agreement signed with Takeda in 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 $5.0m (or €4.6m) initial payment, received by the Company in May 2023, was fully recognized in revenue since June 30, 2023;
• A €0.2 million decrease in revenue from invoicing of research and development costs to €1.2 million for the year ended December 31, 2023, as compared to €1.4 million for the year ended December 31, 2022.

Government funding for research expenditures

Government funding for research expenditures increased by €1.7 million, or 21.1%, to €9.7 million for the year ended December 31, 2023, as compared to €8.0 million for the year ended December 31, 2022. As of December 31, 2023, government funding is mainly comprised of research tax credit for for 2023 fiscal year for an amount of €9.8 million as compared to €7.9 million euros for year ended December 31, 2022. As a reminder, the 2022 research tax credit included a reduction of €1.3 million related to a provision following the tax inspection carried out in 2022 by the French tax authorities. This provision was based on estimated amounts and adjustments not disputed by the Company. The change in the research tax credit is due to an increase in eligible expenses explained by (i) the increase in depreciation on IPH5201 rights following the full amortization of the additional payment of €2.0 million to Orega Biotech following the dosing of the first patient in the MATISSE Phase 2 clinical trial, compared with €0.6 million as of December 31, 2022, and (ii) an increase in subcontracting expenses in connection with the IPH6501 program and the launch of work on the Lacutamab program. However, these increases are offset by the decrease in amortization of the monalizumab intangible asset due to the extension of the amortization period, as well as for certain tangible assets which had reached the end of their amortization period, and also by lower R&D personnel costs. The increase in expenses eligible for the research tax credit is also due to the absence of any grants received in 2023, which reduced the eligible base, as compared to 2022, when the eligible base was reduced by the receipt of the remaining repayable advance from the BPI for the amount of €0,7 million to support the independent Phase 2 clinical trial FOR COVID-19 Elimination (FORCE), evaluating the safety and efficacy of avdoralimab in patients with severe COVID-19 pneumonia.

The research tax credit is calculated as 30% of the amount of research and development expenses, net of grants received, eligible for the research tax credit for the fiscal year.

Operating expenses

The table below presents our operating expenses from continuing operations for the years ended December 31, 2023 and 2022:

Research and development expenses

Research and development ("R&D") expenses from continuing operations increased by €4.4 million, or 8.4%, to €56.0 million for the year ended December 31, 2023, as compared to €51.7 million for the year ended December 31, 2022. This increase over the period is mainly due to an increase in direct research and development expenses of €2.7 million over the period due to the significant increase in expenses relating to pre-clinical development programs, partly offset by the decrease in expenses relating to clinical programs. Research and development expenses represented a total of 75.4% and 69.7% of operating expenses for years ended December 31, 2023 and December 31, 2022, respectively.

Direct research and development expenses increased by €2.7 million, or 9.8%, to €30.2 million for the year ended December 31, 2023, as compared to direct research and development expenses of €27.5 million for the year ended December 31, 2022. This increase is mainly due to: (i) a €3.2 million increase in expenses related to preclinical development programs relating notably to Antibody Drug Conjugates - ADC field, partly offset by a €0.5 million decrease in expenses related to the Company's clinical programs. This decrease in clinical programs expenses mainly results from a €0.4 million decrease in expenses relating to the monalizumab program, a €0.2 million decrease in expenses relating to the avdoralimab program and a €0.2 million decrease in expenses relating to the lacutamab program, partly offset by a €0.7 million increase in expenses related to the growth in IPH5201 Phase 2 trials patient recruitment.

Also, as of December 31, 2023, the collaboration liabilities relating to monalizumab and the agreements signed with AstraZeneca in April 2015, October 2018 and September 2020 amounted to €52.7 million, as compared to collaborations liabilities of €63.2 million as of December 31, 2022. This decrease of €10.5m mainly results from (i) net repayment of €8.4 million during year 2023 to AstraZeneca linked to the Monalizumab cofinancing program, including Phase 3 trial INTERLINK-1 launched in October 2020 and PACIFIC-9 launched in April 2022, and (ii) the decrease of the collaboration commitment ("collaboration liabilities" in the consolidated statements of financial position) for an amount of €2.0 million linked to the Euro-dollar parity exchange rate variation.

Personnel and other expenses allocated to research and development increased by €1.7 million, or 6.9%, to €25.8 million for the year ended December 31, 2023, as compared to an amount of €24.2 million for the year ended December 31, 2022. This increase is due to the (i) €0.7 million increase in staff costs allocated to research and development, of which €0.5 million in personnel expenses and €0.2 million in share-based payment expenses, (ii) increase of €1.0 million in depreciation and amortization. The line item is mainly composed of the amortization of the monalizumab, IPH5201 intangible assets.

General and administrative expenses

General and administrative ("G&A") expenses from continuing operations decreased by €4.1 million, or 18.5% to €18.3 million for the year ended December 31, 2023 as compared to €22.4 million for the year ended December 31, 2022. G&A expenses represented a total of 24.6% and 30.3% of the total operating expenses for the years ended December 31, 2023 and 2022, respectively.

Personnel expenses, which include the compensation paid to our employees, decreased by €1.4 million, or 13.6%, to €8.8 million for the year ended December 31, 2023, as compared to personnel expenses of €10.2 million for the year ended December 31, 2022. This decrease mainly results from a decrease in wages of €1.2 million as well as a decrease of €0.2 million in share-based payment expenses mainly explained by the decrease of employees.

Non-scientific advisory and consulting expenses mostly consist of auditing, accounting, legal and hiring services. These expenses decreased by €1.3 million, or 31.5%, to €2.9 million for the year ended December 31, 2023, as compared to an amount of €4.2 million for the year ended December 31, 2022. This decrease mainly results from operating efficiency measures, which led to a reduction in the number of new hires, and use of external communication and consulting services.

Other general and administrative expenses relate to intellectual property, depreciation and amortization and other general, administrative expenses. These expenses decreased by €1.4 million or 17.9% to €6.5 million for the year ended December 31, 2023, as compared to an amount of €8.0 million for the year ended December 31, 2022.

This decrease related notably to savings (reduction in office space) and a reclassification of R&D laboratory support costs (maintenance, depreciation of R&D equipment) for €1.0 million in R&D.

Impairment of intangible assets

As a reminder, as of December 31, 2022, impairment of intangible assets was linked to the full depreciation of the avdoralimab intangible asset (anti-C5aR rights acquired from Novo/Nordisk A/S) for an amount of €41.0 million (non-cash expense) following Company's decision to stop the development of avdoralimab in bullous pemphigoid ("BP") indication in inflammation.

Financial income (loss), net

We recognized a net financial gain of €5.1 million for the year ended December 31, 2023, as compared to €0.5 million net financial loss for the year ended December 31, 2022. This change mainly results from interest income on financial investments (net gain of €2.5 million in 2023), the change in the fair value of certain financial instruments (net gain of €1.6 million in 2023 as compared to a net loss of €1.6 million in 2022) and a net foreign exchange gain of €0.9 million in 2023 as compared to a net foreign exchange gain of €0.8 million in 2022.

Net loss from discontinued operations

As a reminder, a Termination and Transition Agreement was negotiated and executed, effective as of June 30, 2021 further to the Company's decision to return the rights of Lumoxiti back to AstraZeneca. Consecutively, activities related to Lumoxiti are presented as discontinued operations since October 1, 2021. Thus, the net income from discontinued operations related to Lumoxiti are nil as of December 31, 2023 as compared to a net loss of €0.1 million as of December 31, 2022 corresponding to residual costs associated with the transfer of activities to AstraZeneca. This transfer has now been completed.

Balance sheet items

Cash, cash equivalents, short-term investments and financial assets (current and non-current) amounted to €102.3 million as of December 31, 2023, as compared to €136.6 million as of December 31, 2022. Net cash as of December 31, 2023 (cash, cash equivalents and current financial assets less current financial liabilities) amounted to €83.5 million (€99.4 million as of December 31, 2022).

The other key balance sheet items as of December 31, 2023 are:

• Deferred revenue of €10.5 million (including €4.6 million booked as ‘Deferred revenue – non-current portion') and collaboration liabilities of €52.7 million (including €45.0 million booked as ‘Collaboration liability – non-current portion') relating to the remainder of the initial payment received from AstraZeneca with respect to monalizumab, not yet recognized as revenue or used to co-fund the research and the development work performed by AstraZeneca including co-funding of the monalizumab program with AstraZeneca, notably the INTERLINK-1 and PACIFIC-9 Phase 3 trials;
• Intangible assets for a net book value of €0.4 million, mainly corresponding to the rights and licenses relating to the acquisitions of monalizumab (€1.6 million as of December 30, 2022); variation between the two periods is mainly explained by depreciation of NKG2A asset over the period;
• Current receivables of €55.6 million, including €29.8 million from the French government related to the research tax credit for the 2019 and 2020 tax years, for which the three-year period expired on December 31, 2023. The CIR repayment for 2019 for an amount of €16.7 million was made in February 2024. The repayment of the 2020 CIR is expected in 2024 for an amount of €13.0 million. Current receivables also include the €15.0 million invoice issued in December 2023 following the exercise of the license option by Sanofi. This amount was received by the Company in January 2024;
• Non-current receivables of €10.6 million from the French government mainly resulting from the 2023 research tax credit (€9.8 million);
• Shareholders' equity of €51.9 million, including the net loss of the period of €7.6 million;
• Financial liabilities amounting to €39.9 million (€42.3 million as of December 31, 2022).

Cash-flow items

The net cash flow used over the year ended December 31, 2023 amounted to €13.6 million, compared to a net cash flow used of €19.5 million for the year ended December 31, 2022.

The net cash flow used during the period under review mainly results from the following:

• Net cash used from operating activities of €32.6 million, mainly explained by (i) the receipt of €25.0 million from Sanofi in March 2023 following the entry into force of the research collaboration and licensing agreement signed in December 2022 under which the Company granted Genzyme Corporation, a wholly-owned subsidiary of Sanofi ("Sanofi") an exclusive licence to Innate Pharma's B7H3 ANKET^® program and options on two additional targets, (ii) the receipt in May 2023 of a payment of €4.6 million ($5,0 million) received from Takeda following the conclusion of an exclusive licensing agreement under which Innate grants Takeda exclusive worldwide rights for the research and development of antibody conjugates (Antibodu Drug Conjugates - ADC), (iii) the receipt in July 2023 of €2.0 million following the treatment of the first patient in the Phase 1/2 clinical trial sponsored by Sanofi evaluating IPH6401/SAR'514 in patients with relapsed or refractory multiple myeloma. Lastly, (iv) during 2023, the Company benefited from the early repayment of the research tax credit claim relating to the 2022 financial year, amounting to €9.2 million, paid to the Company by the French Treasury in July 2023. As a reminder, cash flows used in operating activities for the year ended December 31, 2022, included successive (i) the collection of €47.7 million ($50.0 million) and €4.6 million ($5.0 million) in June 2022 and August 2022,respectively, under the monalizumab agreement and the amendment to the IPH5201 collaboration and option agreement, (ii) the collection of €3.0 million received from Sanofi under the 2016 agreement and following Sanofi's decision to advance IPH6401/SAR'514 into regulatory preclinical studies for an investigational new drug, and (iii) in 2022, the Company collected the early repayment of the research tax credit receivable relating to the 2021 financial year for an amount of €10.3 million, paid to the Company by the French Treasury in November 2022. These collections were partially offset by the €5.9 million payment to AstraZeneca on April 20, 2022 pursuant to the Lumoxiti termination and transition agreement and cash outflows related to the Company's operating activities. Not considering these specific effects , net cash flows used by operating activities for the year ended December, 2023 decreased by €5.5 million. This decrease is mainly explained by the decrease in the Company's research and development activities, notably related to preclinical trials, and also by higher cash outflows related to the re-invoicing of costs to AstraZeneca for the Phase 3 trials evaluating monalizumab, INTERLINK-1 and PACIFIC-9, in accordance with the Company's co-financing commitments and the reduction in staff costs related to the reduction of staff in the Company. Also, net cash flow consumed by operating activities in connection with the Lumoxiti discontinued operation are nil for the year ended December 31, 2023 as compared to € 5.1 million for the year 2022. In 2022, the cash consumption related to the payment to AstraZeneca of €5.9 million in April 2022 under the termination and transition agreement for Lumoxiti.
• Net cash generated in investing activities for an amount of €20.6 million, mainly composed of a disposal of a non-current financial instrument which generated a net cash collection of €22.8 million partially offset by acquisitions of property, plant and equipment and intangible assets of €2.2 million. As a reminder, net cash flow used in investing activities for the year ended December 31, 2022 amounted to €1.9 million and were mainly comprised of a disposal of a non-current financial instrument which generated a net cash collection of €2.9 million partially offset by acquisitions of property, plant and equipment and intangible assets for €1.1 million. Net cash flows consumed by investing activities in connection with the Lumoxiti discontinued operation are nil for year ended December 31, 2023 and December 31 2022, respectively.
• Net cash flows from financing activities for an amount of €2.0 million for the year ended December 31, 2023 as compared to net cash flows from financing activities of €1.8 million for the year ended December 31, 2022. Loan repayments amounted to €2.4 million for the year ended December 31, 2023 compared to €2.0 million for the year ended December 31, 2022. Net proceeds from the exercise or subscription of equity instruments amount to €0.4 million for year ended December 31, 2023 as compared to €0,2 million for year ended December 31, 2022. In addition, net cash flow from financing activities related to Lumoxiti discontinued operation are nil for year ended December 31, 2023 and 2022, respectively.

Post period event

• On January 4, 2024, the Company announced that the U.S. Food and Drug Administration (FDA) has lifted the partial clinical hold placed on the lacutamab IND. On October 5, the Company announced that the lacutamab IND has been placed on partial clinical hold by FDA following a recent patient death in the TELLOMAK study. The death of a patient affected by Sézary Syndrome was initially considered due to hemophagocytic lymphohistiocytosis (HLH), a rare hematologic disorder. 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.
• On January 4, 2024, the company announced that it has strengthened the Company's leadership and corporate governance with the appointment of two new Executive Board members. Arvind Sood, Executive Vice President (EVP), President of US Operations, Dr Sonia Quaratino, EVP, Chief Medical Officer are thus joining Hervé Brailly, interim Chief Executive Officer and Yannis Morel, EVP, Chief Operating Officer.
• On March, 6, the Company announced the first patient was dosing 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.

Nota

This press release contains financial data approved by the Executive Board on March 20, 2024 based on our consolidated financial statements for the year ended December 31, 2023. They were reviewed by the Supervisory Board on March 20, 2024. The audit is in progress at the date of this communication.

Risk factors

Risk factors ("Facteurs de Risque") identified by the Company are presented in section 3 of the registration document ("Universal Registration Document") filed with the French Financial Markets Authority ("Autorité des Marchés Financiers" or "AMF"), which is available on the AMF website http://www.amf-france.org or on the Company's website as well as in the Risk Factors section of the Company's Annual Report on Form 20-F for the year ended December 31, 2023 filed with the U.S. Securities and Exchange Commission, and subsequent filings and reports filed with the AMF or SEC, or otherwise made public, by the Company.

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