INBX

SAN DIEGO, Aug. 13, 2026 /PRNewswire/ -- Inhibrx Biosciences, Inc. (Nasdaq: INBX) ("Inhibrx" or the "Company") today reported financial results for the second quarter of 2026. The biopharmaceutical company has two programs in ongoing clinical trials. Recent Corporate Highlights and Upcoming Milestones Oxford Loan Amendment. In July 2026, the Company entered into a second amendment to the Loan and Security Agreement (Second Amendment) with Oxford Finance LLC (Oxford), which provides for an additional $325.0 million in gross proceeds, (i) $100.0 million of which was funded upon execution of the amendment and (ii) up to an additional $225.0 million which, upon the Company's request and at Oxford's discretion, may be funded in future increments of $50.0 million or more. INBRX-106 ozekibart (INBRX-109) Financial Results Cash and Cash Equivalents. As of June 30, 2026, the Company had cash and cash equivalents of $133.3 million. On July 15, 2026, the Company entered into the Second Amendment to the Loan and Security Agreement with Oxford, and received gross proceeds of $100.0 million. As of August 6, 2026, the Company had cash and cash equivalents of $219.5 million. Revenue. Inhibrx earned $1.3 million of revenue during the second quarter of 2025 related to the Company's completion of the transfer of all licenses, related materials, and know-how under a license and assignment agreement with Scithera, Inc. The Company did not recognize any revenue during the second quarter of 2026. R&D Expense. Research and development expenses were $23.9 million for the second quarter of 2026, as compared to $22.3 million for the second quarter of 2025. This increase was primarily related to increases in both clinical trial costs and contract manufacturing expenses as the Company progresses its ongoing clinical trials and begins certain manufacturing activities to supports its filing of the BLA for the potential approval of ozekibart (INBRX-109) in conventional chondrosarcoma. These increases were offset in part by a decrease in personnel-related expenses and clinical consulting expenses. G&A Expense. General and administrative expenses were $8.3 million during the second quarter of 2026, compared to $6.4 million during the second quarter of 2025. This increase is primarily related to additional pre-commercialization expenses related to market access, launch and the development of communication materials as the Company prepares for its potential commercialization of ozekibart (INBRX-109) in conventional chondrosarcoma. Other Expense, Net. Other expense, net was $4.5 million during the second quarter of 2026, compared to $1.3 million during the second quarter of 2025. The increase is primarily due to higher interest expense on the Company's $175.0 million outstanding loan balance during the second quarter of 2026 as compared to $100.0 million outstanding during the second quarter of 2025. This also reflects a decrease in interest income on the Company's cash and money market balances due to lower average cash balances and a decline in short-term interest rates. Net Loss. Net loss was $36.7 million during the second quarter of 2026, or $2.34 per share, basic and diluted, as compared to a net loss of $28.7 million during the second quarter of 2025, or $1.85 per share, basic and diluted. About Inhibrx Biosciences, Inc. Inhibrx is a clinical-stage biopharmaceutical company with a pipeline of novel biologic therapeutic candidates. Inhibrx utilizes diverse methods of protein engineering to address the specific requirements of complex target and disease biology, including its proprietary protein engineering platforms. Inhibrx's current clinical pipeline of therapeutic candidates includes ozekibart and INBRX-106, both of which utilize multivalent formats where the precise valency can be optimized in a target-centric way to mediate what Inhibrx believes to be the most appropriate agonist function. For more information, please visit www.inhibrx.com. Forward Looking Statements Inhibrx cautions you that statements contained in this press release regarding matters that are not historical facts are forward-looking statements. These statements are based on Inhibrx's current beliefs and expectations. These forward-looking statements include, but are not limited to, statements regarding Inhibrx's judgments and beliefs regarding the strength of Inhibrx's pipeline; the safety and efficacy of its therapeutic candidates, ozekibart and INBRX-106, based on topline and interim results; the potential for INBRX-106 to be used for the treatment of metastatic or unresectable recurrent HNSCC; the clinical development of our product candidates, including expected data readouts, regulatory submissions, approvals and interactions, and the timing thereof; any presumption that topline, interim or preliminary data will be representative of final data or data in later clinical trials; the planned announcement of PFS data from INBRX-106 Phase 2 trial in HNSCC in combination with pembrolizumab; Inhibrx's plans to meet with the FDA to discuss plans to initiate a first-line registrational trial in CRC or an accelerated pathway for approval for ozekibart in fourth-line colorectal cancer and in refractory Ewing sarcoma; and potential future funding under the loan agreement with Oxford. Actual results may differ from those set forth in this press release due to the risks and uncertainties inherent in Inhibrx's business, including, without limitation, risks and uncertainties regarding: topline data may not accurately reflect the complete results of a particular study or trial and remain subject to audit, and final data may differ materially from topline data; the initiation, timing, progress and results of its preclinical studies and clinical trials, and its research and development programs; its ability to advance therapeutic candidates into, and successfully complete, clinical trials; its interpretation of topline, interim or preliminary data from its clinical trials, including interpretations regarding disease control and disease response; Inhibrx's ability to utilize its technology platform to generate and advance additional therapeutic candidates; the implementation of Inhibrx's business model and strategic plans for its business and therapeutic candidates; the scope of protection Inhibrx is able to establish and maintain for intellectual property rights covering its therapeutic candidates; the ability to raise funds needed to satisfy Inhibrx's capital requirements, which may depend on financial, economic and market conditions and other factors, over which it may have no or limited control; Inhibrx's financial performance; developments relating to its competitors and its industry; regulatory review and approval of Inhibrx's therapeutic candidates; and other risks described from time to time in the "Risk Factors" section of its filings with the U.S. Securities and Exchange Commission, including those described in its Annual Report on Form 10-K, its Quarterly Reports on Form 10-Q, and supplemented from time to time by its Current Reports on Form 8-K as filed from time to time. You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date hereof, and Inhibrx undertakes no obligation to update these statements to reflect events that occur or circumstances that exist after the date hereof. All forward-looking statements are qualified in their entirety by this cautionary statement, which is made under the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Investor and Media Contact: Kelly D. DeckChief Financial [email protected] View original content to download multimedia:https://www.prnewswire.com/news-releases/inhibrx-reports-second-quarter-2026-financial-results-302851356.html

SAN DIEGO, May 14, 2026 /PRNewswire/ -- Inhibrx Biosciences, Inc. (Nasdaq: INBX) ("Inhibrx" or the "Company") today reported financial results for the first quarter of 2026. The biopharmaceutical company has two programs in ongoing clinical trials. Recent Corporate Highlights and Upcoming Milestones INBRX-106 In May 2026, we announced updated interim data from our randomized, first-line Phase 2 portion of the HexAgon study. The trial evaluated the safety and efficacy of INBRX-106, a hexavalent OX40 agonist, in combination with pembrolizumab (the combination arm) versus pembrolizumab monotherapy (the control arm) in first-line patients with treatment-naïve, PD-L1 positive (Combined Positive Score (CPS) ≥ 20) metastatic or unresectable recurrent Head and Neck Squamous Cell Carcinoma (HNSCC). We plan to announce progression-free survival (PFS) data from the randomized Phase 2 trial in HNSCC in combination with pembrolizumab in the fourth quarter of 2026. ozekibart (INBRX-109) In April 2026, we announced updated interim data from our Phase 1/2 study evaluating ozekibart (INBRX-109) in combination with FOLFIRI in patients with locally advanced or metastatic, unresectable colorectal cancer (CRC); Additionally, in April 2026, we submitted a Biologics License Application (BLA) to the U.S. Food and Drug Administration (FDA) for ozekibart in conventional chondrosarcoma; and We plan to meet with the FDA in the second half of 2026 to discuss plans to initiate a first-line registrational trial in CRC. We also plan to discuss with the FDA the potential for accelerated regulatory pathways for ozekibart in fourth-line colorectal cancer and in refractory Ewing sarcoma. Financial Results Cash and Cash Equivalents. As of March 31, 2026, the Company had cash and cash equivalents of $161.7 million, as compared to $124.2 million as of December 31, 2025. The Company's cash balance increased as a result of the receipt of gross proceeds of $75.0 million in March 2026 upon entering into the First Amendment to the Loan and Security Agreement (March 2026 Amendment) with Oxford Finance LLC (Oxford). R&D Expense. Research and development expenses were $25.2 million for the first quarter of 2026, as compared to $36.9 million for the first quarter of 2025. This decrease was primarily related to lower clinical trial costs associated with ozekibart for the treatment of unresectable or metastatic conventional chondrosarcoma as the trial approached completion of enrollment, as well as a decrease in contract manufacturing expenses due to the timing and completion of certain manufacturing activities required to support our clinical trials. In addition, personnel-related expenses decreased as a result of a decrease in headcount in the current period. G&A Expense. General and administrative expenses were $5.7 million during the first quarter of 2026, compared to $6.0 million during the first quarter of 2025. These expenses were consistent in each period with a slight decrease in personnel-related expenses as a result of a decrease in headcount in the current period. Other Expense, Net. Other expense, net was $2.5 million during the first quarter of 2026, compared to $0.4 million during the first quarter of 2025. The increase reflects higher interest expense following the Company's receipt of an additional $75.0 million in principal, bringing the outstanding loan balance from $100.0 million to $175.0 million during the first quarter of 2026, as well as lower interest income on the Company's cash and money market balances reflecting lower average cash balances and a decline in short-term interest rates. Net Loss. Net loss was $33.4 million during the first quarter of 2026, or $2.15 per share, basic and diluted, as compared to a net loss of $43.3 million during the first quarter of 2025, or $2.80 per share, basic and diluted. About Inhibrx Biosciences, Inc. Inhibrx is a clinical-stage biopharmaceutical company with a pipeline of novel biologic therapeutic candidates. Inhibrx utilizes diverse methods of protein engineering to address the specific requirements of complex target and disease biology, including its proprietary protein engineering platforms. Inhibrx's current clinical pipeline of therapeutic candidates includes ozekibart and INBRX-106, both of which utilize multivalent formats where the precise valency can be optimized in a target-centric way to mediate what Inhibrx believes to be the most appropriate agonist function. For more information, please visit www.inhibrx.com. Forward Looking Statements Inhibrx cautions you that statements contained in this press release regarding matters that are not historical facts are forward-looking statements. These statements are based on Inhibrx's current beliefs and expectations. These forward-looking statements include, but are not limited to, statements regarding Inhibrx's judgments and beliefs regarding the strength of Inhibrx's pipeline; the safety and efficacy of its therapeutic candidate, INBRX-106, based on topline and interim results; the potential for INBRX-106 to be used for the treatment of metastatic or unresectable recurrent HNSCC; the clinical development of our product candidates, including expected data readouts, regulatory submissions and interactions, and the timing thereof; any presumption that topline, interim or preliminary data will be representative of final data or data in later clinical trials; the planned announcement of PFS data from INBRX-106 Phase 2 trial in HNSCC in combination with pembrolizumab; and Inhibrx's plans to meet with the FDA to discuss plans to initiate a first-line registrational trial in CRC or an accelerated pathway for approval for ozekibart in fourth-line colorectal cancer and in refractory Ewing sarcoma in the second half of 2026. Actual results may differ from those set forth in this press release due to the risks and uncertainties inherent in Inhibrx's business, including, without limitation, risks and uncertainties regarding: topline data may not accurately reflect the complete results of a particular study or trial and remain subject to audit, and final data may differ materially from topline data; the initiation, timing, progress and results of its preclinical studies and clinical trials, and its research and development programs; its ability to advance therapeutic candidates into, and successfully complete, clinical trials; its interpretation of topline, interim or preliminary data from its clinical trials, including interpretations regarding disease control and disease response; Inhibrx's ability to utilize its technology platform to generate and advance additional therapeutic candidates; the implementation of Inhibrx's business model and strategic plans for its business and therapeutic candidates; the scope of protection Inhibrx is able to establish and maintain for intellectual property rights covering its therapeutic candidates; the ability to raise funds needed to satisfy Inhibrx's capital requirements, which may depend on financial, economic and market conditions and other factors, over which it may have no or limited control; Inhibrx's financial performance; developments relating to its competitors and its industry; regulatory review and approval of Inhibrx's therapeutic candidates; and other risks described from time to time in the "Risk Factors" section of its filings with the U.S. Securities and Exchange Commission, including those described in its Annual Report on Form 10-K, its Quarterly Reports on Form 10-Q, and supplemented from time to time by its Current Reports on Form 8-K as filed from time to time. You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date hereof, and Inhibrx undertakes no obligation to update these statements to reflect events that occur or circumstances that exist after the date hereof. All forward-looking statements are qualified in their entirety by this cautionary statement, which is made under the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Investor and Media Contact: Kelly D. Deck Chief Financial Officer [email protected] 858-795-4260 View original content to download multimedia:https://www.prnewswire.com/news-releases/inhibrx-reports-first-quarter-2026-financial-results-302772832.html

Interim analyses show INBRX-106 + pembrolizumab achieved a 44.0% confirmed Objective Response Rate (cORR): In the preliminary confirmed response-evaluable population, the INBRX-106 + pembrolizumab combination achieved a cORR of 44.0% versus 21.4% with pembrolizumab alone, representing a 22.6% absolute increase in cORR. Superior depth of response: Responding patients in the combination arm demonstrated deeper tumor reductions overall, with the majority achieving target lesion shrinkage exceeding 50%; notably, three patients achieved a complete radiographic response. Up to 15-fold mean increase in systemic T-Cell expansion: Peripheral blood analysis showed robust CD8+ and CD4+ T-cell proliferation in combination-treated patients, providing mechanistic support for the observed clinical activity. Manageable safety profile: The combination demonstrated a manageable preliminary safety profile consistent with that expected from an immunotherapy combination. SAN DIEGO, May 11, 2026 /PRNewswire/ -- Inhibrx Biosciences, Inc. (Nasdaq: INBX) ("Inhibrx" or the "Company"), a clinical-stage biopharmaceutical company focused on developing novel biologic therapeutic candidates, today announced positive interim results from the randomized, first-line Phase 2 portion of the HexAgon study. The trial evaluated the safety and efficacy of INBRX-106, a hexavalent OX40 agonist, in combination with pembrolizumab (the combination arm) versus pembrolizumab monotherapy (the control arm) in first-line patients with treatment-naïve, PD-L1 positive (CPS ≥ 20) metastatic or unresectable recurrent Head and Neck Squamous Cell Carcinoma (HNSCC). HNSCC was selected as a proof-of-concept indication, as PD-1 monotherapy is active in this tumor type but leaves significant room for improvement. The trial design was modeled after KEYNOTE-048, focusing on patients with high PD-L1 expression (CPS ≥ 20) in order to further sharpen the ability to detect a treatment effect above checkpoint inhibition alone. A clear signal of added benefit in this study design would support INBRX-106's potential to enhance checkpoint inhibitor efficacy across checkpoint inhibitor-sensitive indications. The Phase 2 portion of the HexAgon study enrolled 68 patients: 33 randomized to the combination arm and 35 to the control arm. Baseline prognostic factors are largely balanced between both arms and the study is being conducted at over 80 sites in the United States, Europe and Asia. Today, the Company presented preliminary data from 53 patients (25 in the INBRX-106 combination arm and 28 in the control arm) with a data cutoff of May 7, 2026, representing the evaluable population for confirmed response, defined as patients who had either experienced confirmed disease progression or death, or completed at least two on-study tumor assessments. The remaining 15 patients in the overall population across both arms had not yet reached the maturity threshold for response confirmation or were not evaluable at the time of this data cut and were therefore not included in this analysis. Active unconfirmed responses and ongoing tumor increases/reductions are present in both arms, and these patients are expected to contribute to the final efficacy dataset in a subsequent update. In the evaluable population, 11 out of 25 patients (44.0%) in the INBRX-106 combination arm achieved a confirmed objective response, compared with 6 out of 28 patients (21.4%) in the control arm. This represents a 22.6% absolute increase in confirmed responses. Three complete responses were observed in the INBRX-106 combination arm, reflecting tumor clearance, while no complete responses were observed with pembrolizumab alone. Complete responses in first-line HNSCC remain uncommon and are generally associated with more durable outcomes. These clinical findings were supported by pharmacodynamic data, which showed up to a 15-fold increase in peripheral CD8+ and CD4+ T-cell proliferation and up to a four-fold increase in activation in INBRX-106 combination-treated patients compared with up to 2.5-fold and 1.5-fold increases, respectively, in those receiving pembrolizumab alone. The observation of robust systemic T-cell expansion and activation in combination-treated patients, alongside the clinical activity observed in this arm, is consistent with the expected mechanism of action of INBRX-106 as a potent T-cell costimulator. The combination of INBRX-106 and pembrolizumab was generally manageable, with a safety profile consistent with the addition of an active immunostimulatory agent to checkpoint blockade. The most common treatment-related adverse events were rash, diarrhea, fatigue, and infusion-related reactions, which were predominantly low-grade. No treatment-related deaths were reported in either arm. "We are greatly encouraged by these early clinical results," said Mark Lappe, Chief Executive Officer of Inhibrx. "These data, coupled with the clear evidence of T-cell expansion and superior depth of response, give us confidence that INBRX-106 could be the first costimulatory agent to fundamentally shift the efficacy ceiling of immunotherapy, and open the door to combinations with new modalities that could be enhanced by OX40 agonism." Next Steps The progression-free survival data from the Phase 2 portion of the HexAgon study are expected to become available in the fourth quarter of 2026. The Company plans to begin the Phase 3 portion of the HexAgon study during the third quarter of 2026. Based on these promising early results, the Company also aims to evaluate INBRX-106 across broader indications to potentially improve the efficacy of checkpoint inhibitors. This strategy includes initiating a study in the perioperative setting in non-small cell lung cancer (NSCLC) later this quarter. The Company believes OX40 agonism has the greatest potential to drive cure in earlier-stage disease settings, where patients typically retain a more active and responsive immune system. In addition, the Company is beginning to plan for expansion into the front-line metastatic NSCLC setting, with studies expected to begin in 2027. Outside of combination with checkpoint inhibitors, the Company plans to explore combinations with agents that could benefit from T-cell costimulation, such as vaccines, T-cell engagers, and CAR-Ts. About INBRX-106 INBRX-106 is a hexavalent agonist targeting OX40 (CD134), a costimulatory receptor on T-cells. Utilizing Inhibrx's proprietary single-domain antibody (sdAb) platform, INBRX-106 is designed to achieve the high-order receptor clustering necessary for robust T-cell activation and survival, a feat that has eluded traditional bivalent antibody approaches. To date, over 175 patients have been treated with INBRX-106. About Inhibrx Biosciences, Inc. Inhibrx Biosciences is a clinical-stage biopharmaceutical company focused on developing a broad pipeline of novel biologic therapeutic candidates. Inhibrx Biosciences utilizes diverse methods of protein engineering to address the specific requirements of complex target and disease biology, including its proprietary protein engineering platforms. Inhibrx Biosciences was incorporated in January 2024 as a direct, wholly-owned subsidiary of Inhibrx, Inc. Prior to the sale of Inhibrx, Inc. and the INBRX-101 program to Sanofi S.A., Inhibrx Biosciences acquired certain corporate infrastructure and other assets and liabilities through a series of internal restructuring transactions effected by Inhibrx, Inc. Inhibrx, Inc. also completed a distribution to holders of its shares of common stock of 92% of the issued and outstanding shares of Inhibrx Biosciences. Following such transactions, Inhibrx Biosciences' current clinical pipeline of therapeutic candidates includes ozekibart (INBRX-109) and INBRX-106, both of which utilize multivalent formats where the precise valency can be optimized in a target-centric way to mediate what we believe to be the most appropriate agonist function. For more information, please visit www.inhibrx.com. Forward-Looking Statements Inhibrx cautions you that statements contained in this press release regarding matters that are not historical facts are forward-looking statements. These statements are based on Inhibrx's current beliefs and expectations. These forward-looking statements include, but are not limited to, statements regarding: Inhibrx's judgments and beliefs regarding the strength of Inhibrx's pipeline; statements regarding the safety and efficacy of its therapeutic candidate, INBRX-106, based on topline and interim results; the potential for INBRX-106 to be used for the treatment of HNSCC; the clinical development of INBRX-106, including expected enrollment in the expansion cohort, data readouts, regulatory submissions and interactions, and the timing thereof; any presumption that topline, interim or preliminary data will be representative of final data or data in later clinical trials, including data from the remaining 15 patients in the overall population for the Phase 2 trial for INBRX-106 in first-line HNSCC; Inhibrx's plans to evaluate INBRX-106 across broader indications and to explore combinations with other therapies; Inhibrx's plans to expand into the front-line metastatic NSCLC setting, with studies expected to begin in 2027; and Inhibrx's plans to begin the Phase 3 portion of the HexAgon study during the third quarter of 2026. Actual results may differ from those set forth in this press release due to the risks and uncertainties inherent in Inhibrx's business, including, without limitation, risks and uncertainties regarding: topline data may not accurately reflect the complete results of a particular study or trial and remain subject to audit, and final data may differ materially from topline data; the initiation, timing, progress and results of its preclinical studies and clinical trials, and its research and development programs; its ability to advance therapeutic candidates into, and successfully complete, clinical trials; its interpretation of topline, interim or preliminary data from its clinical trials, including interpretations regarding disease control and disease response; results from preclinical studies or early clinical trials not necessarily being predictive of future results; unexpected adverse side effects or inadequate efficacy of its therapeutic candidates that may limit their development, regulatory approval and/or commercialization; the potential for its programs and prospects to be negatively impacted by developments relating to its competitors, including the results of studies or regulatory determinations relating to its competitors; the timing or likelihood of regulatory filings and approvals and regulatory developments in the U.S. and foreign countries; the successful commercialization of its therapeutic candidates, if approved; the pricing, coverage and reimbursement of its therapeutic candidates, if approved; its ability to utilize its technology platform to generate and advance additional therapeutic candidates; and other risks described from time to time in the "Risk Factors" section of its filings with the U.S. Securities and Exchange Commission, including those described in its Annual Report on Form 10-K, its Quarterly Reports on Form 10-Q, and supplemented from time to time by its Current Reports on Form 8-K as filed from time to time. You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date hereof, and Inhibrx undertakes no obligation to update these statements to reflect events that occur or circumstances that exist after the date hereof. All forward-looking statements are qualified in their entirety by this cautionary statement, which is made under the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Investor and Media Contact: Kelly Deck, CFO [email protected] 858-795-4260 View original content to download multimedia:https://www.prnewswire.com/news-releases/inhibrx-reports-interim-phase-2-data-for-inbrx-106-in-first-line-hnscc-initial-results-demonstrate-potential-costimulatory-benefit-over-pd-1-monotherapy-302767819.html

SAN DIEGO, March 19, 2026 /PRNewswire/ -- Inhibrx Biosciences, Inc. (Nasdaq: INBX) ("Inhibrx" or the "Company") today reported financial results for the fourth quarter and fiscal year 2025. Following the completion of the sale of INBRX-101 (the "101 Transaction") by Inhibrx, Inc. (the "Former Parent") to Sanofi S.A. (the "Acquirer") and the Former Parent's concurrent spin-off of the Inhibrx business in May 2024, the biopharmaceutical company now has two programs in ongoing clinical trials. Upcoming Milestones ozekibart (INBRX-109) We expect to submit the Biologics License Application ("BLA") for ozekibart for the treatment of unresectable or metastatic conventional chondrosarcoma to the U.S. Food and Drug Administration ("FDA") early in the second quarter of 2026; We plan to announce progression-free survival ("PFS") data for the Phase 1/2 colorectal cancer expansion cohort in the second quarter of 2026; and We plan to meet with the FDA to discuss accelerated approval for Ewing Sarcoma and fourth line colorectal cancer in the second half of 2026. INBRX-106 We plan to announce interim objective response rate ("ORR") data from the randomized Phase 2/3 trial in head and neck squamous cell carcinoma ("HNSCC") in combination with KEYTRUDAﾮ (pembrolizumab) in the second quarter of 2026; and We plan to announce PFS data from the randomized Phase 2/3 trial in HNSCC in combination with pembrolizumab in the fourth quarter of 2026 at the European Society for Medical Oncology ("ESMO") 2026 Congress. Financial Results Cash and Cash Equivalents. As of December 31, 2025, Inhibrx had cash and cash equivalents of $124.2 million. On March 18, 2026, the Company entered into the First Amendment to the Loan and Security Agreement with Oxford Finance, LLC and received gross proceeds of $75.0 million. R&D Expense Research and development expenses were $25.3 million during the fourth quarter of 2025 as compared to $33.4 million during the fourth quarter of 2024. This decrease during the fourth quarter of 2025 was primarily due to a decrease in expense related to lower clinical trial costs in our ozekibart registration-enabling trial for the treatment of unresectable or metastatic conventional chondrosarcoma as the trial approached completion of enrollment ahead of our data readout in October 2025, as well as a decrease in contract manufacturing expenses; Research and development expenses were $113.0 million during the fiscal year 2025 as compared to $203.7 million during the fiscal year 2024. This decrease during the fiscal year 2025 was primarily due to the following factors: a decrease in clinical trial expense primarily related to lower clinical trial costs in our ozekibart registration-enabling trial for the treatment of unresectable or metastatic conventional chondrosarcoma as discussed above; a decrease in contract manufacturing expense primarily attributable to decreased expenses incurred at our contract development and manufacturing organizations for our ozekibart program and INBRX-106 program, as well as decreased expenses following the 101 Transaction; and increased personnel-related expense during the fiscal year 2024 related to the recognition of $25.9 million upon the acceleration of outstanding options in connection with the closing of the 101 Transaction. G&A Expense General and administrative expenses were $5.6 million during the fourth quarter of 2025, compared to $16.7 million during the fourth quarter of 2024. This decrease during the fourth quarter of 2025 was primarily due to an increase in legal services incurred in the prior period in connection with legal proceedings, which have since concluded, finding the Company not liable for damages. General and administrative expenses were $23.3 million during the fiscal year 2025, compared to $127.9 million during the fiscal year 2024. This decrease during the fiscal year 2025 was primarily due to the following factors: one-time expenses incurred during the fiscal year 2024 related to the 101 Transaction, including $68.1 million of legal, advisory, and consulting services, and the recognition of $15.2 million in stock option expense upon the acceleration of outstanding options in connection with the closing of the 101 Transaction; and increased expense during the fiscal year 2024 related to legal services incurred in connection with the Company's legal proceedings as discussed above. Other Income (Expense) Other expense was $1.9 million during the fourth quarter of 2025, compared to other income of $2.1 million during the fourth quarter of 2024. Other expense in the current period consisted of $3.2 million of interest expense on the Company's $100.0 million outstanding debt balance, offset in part by other income. Other income during each period consisted of interest income earned on the Company's sweep and money market account balances. During the fourth quarter of 2024, the Company did not incur any interest expense following the extinguishment of all outstanding debt in connection with the 101 Transaction. Other expense was $5.0 million during the fiscal year 2025, compared to other income of $2.0 billion during the fiscal year 2024. Other expense in the current period consisted of $12.2 million of interest expense on the Company's $100.0 million outstanding debt balance, offset in part by other income. Other income during each period consisted of interest earned on the Company's sweep and money market account balances. During the fiscal year ended 2024, as noted above, other income also included the gain recorded in connection with the completion of the 101 Transaction. This gain consisted of (i) the consideration paid by the Acquirer for all outstanding common stock, warrants, and stock options, (ii) the extinguishment of the Company's outstanding debt which was assumed by the Acquirer, (iii) assets and liabilities related to the Inhibrx 101 Business, which were assumed by the Acquirer, and (iv) transaction costs paid for by the Acquirer. Net Income (Loss) Net loss was $32.8 million during the fourth quarter of 2025, or $2.11 per share, basic and diluted, compared to a net loss of $47.9 million during the fourth quarter of 2024, or $3.09 per share, basic and diluted. Net loss was $140.1 million during the fiscal year 2025, or $9.04 per share, basic and diluted, compared to a net income of $1.7 billion during the fiscal year 2024, or earnings per share $114.01 basic and $112.62 diluted. About Inhibrx Biosciences, Inc. Inhibrx is a clinical-stage biopharmaceutical company with a pipeline of novel biologic therapeutic candidates. Inhibrx utilizes diverse methods of protein engineering to address the specific requirements of complex target and disease biology, including its proprietary protein engineering platforms. Inhibrx was incorporated in January 2024 as a direct, wholly-owned subsidiary of Inhibrx, Inc. Prior to the sale of Inhibrx, Inc. and the INBRX-101 program to Sanofi S.A., Inhibrx acquired certain corporate infrastructure and other assets and liabilities through a series of internal restructuring transactions effected by Inhibrx, Inc. Inhibrx, Inc. also completed a distribution to holders of its shares of common stock of 92% of the issued and outstanding shares of Inhibrx. Following such transactions, Inhibrx's current clinical pipeline of therapeutic candidates includes ozekibart and INBRX-106, both of which utilize multivalent formats where the precise valency can be optimized in a target-centric way to mediate what Inhibrx believes to be the most appropriate agonist function. For more information, please visit www.inhibrx.com. Forward Looking Statements Inhibrx cautions you that statements contained in this press release regarding matters that are not historical facts are forward-looking statements. These statements are based on Inhibrx's current beliefs and expectations. These forward-looking statements include, but are not limited to, statements regarding statements regarding the safety and efficacy of its therapeutic candidate, ozekibart, based on topline and interim results; the potential for ozekibart to be used for the treatment of chondrosarcoma, colorectal cancer and Ewing sarcoma; any presumption that topline, interim or preliminary data will be representative of final data or data in later clinical trials; and Inhibrx's plans to submit to the FDA a BLA early in the second quarter of 2026, to announce data regarding its ozekibart Phase 1/2 colorectal cancer expansion cohort and meet with the FDA to discuss accelerated approval for Ewing sarcoma and fourth-line colorectal cancer in the second quarter of 2026, to announce ORR data regarding its INBRX-106 Phase 2/3 trial in HNSCC in combination with pembrolizumab in the second quarter of 2026 and to announce data regarding its INBRX-106 Phase 2/3 trial in HNSCC in combination with pembrolizumab at the ESMO 2026 Congress. Actual results may differ from those set forth in this press release due to the risks and uncertainties inherent in Inhibrx's business, including, without limitation, risks and uncertainties regarding: topline data may not accurately reflect the complete results of a particular study or trial and remain subject to audit, and final data may differ materially from topline data; the initiation, timing, progress and results of its preclinical studies and clinical trials, and its research and development programs; its ability to advance therapeutic candidates into, and successfully complete, clinical trials; its interpretation of topline, interim or preliminary data from its clinical trials, including interpretations regarding disease control and disease response; the Company's ability to utilize the Company's technology platform to generate and advance additional therapeutic candidates; the implementation of the Company's business model and strategic plans for the Company's business and therapeutic candidates; the scope of protection the Company is able to establish and maintain for intellectual property rights covering the Company's therapeutic candidates; the ability to raise funds needed to satisfy the Company's capital requirements, which may depend on financial, economic and market conditions and other factors, over which the Company may have no or limited control; the Company's financial performance; developments relating to the Company's competitors and the Company's industry; regulatory review and approval of the Company's therapeutic candidates; and other risks described from time to time in the "Risk Factors" section of its filings with the U.S. Securities and Exchange Commission, including those described in its Annual Report on Form 10-K, its Quarterly Reports on Form 10-Q, and supplemented from time to time by its Current Reports on Form 8-K as filed from time to time. You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date hereof, and Inhibrx undertakes no obligation to update these statements to reflect events that occur or circumstances that exist after the date hereof. All forward-looking statements are qualified in their entirety by this cautionary statement, which is made under the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Investor and Media Contact: Kelly D. Deck Chief Financial Officer [email protected] 858-795-4260 View original content to download multimedia:https://www.prnewswire.com/news-releases/inhibrx-reports-fourth-quarter-and-fiscal-year-2025-financial-results-302718114.html

SAN DIEGO, Nov. 14, 2025 /PRNewswire/ -- Inhibrx Biosciences, Inc. (Nasdaq: INBX) ("Inhibrx" or the "Company") today reported financial results for the third quarter of 2025. Following the completion of the sale of INBRX-101 (the "101 Transaction") by Inhibrx, Inc. (the "Former Parent") to Sanofi S.A. and the Former Parent's concurrent spin-off of the Inhibrx business in May 2024, the biopharmaceutical company now has two programs in ongoing clinical trials. Recent Corporate Highlights On October 23, 2025, Inhibrx announced positive topline results from its registrational trial of ozekibart (INBRX-109) in chondrosarcoma and provided an update on its colorectal cancer and Ewing sarcoma expansion cohorts. Ozekibart met its primary endpoint in chondrosarcoma, demonstrating a statistically significant and clinically meaningful improvement in median progression-free survival compared to placebo. Key secondary endpoints reinforce the primary benefit, demonstrating meaningful improvements in disease control and patient quality of life. Inhibrx plans to submit to the U.S. Food and Drug Administration a biologics license application in the second quarter of 2026. Interim data from expansion cohorts in patients with colorectal cancer and Ewing sarcoma demonstrate high response and disease control rates in difficult-to-treat, heavily pretreated patients. Financial Results Cash and Cash Equivalents . As of September 30, 2025, Inhibrx had cash and cash equivalents of $153.1 million, as compared to $186.6 million as of June 30, 2025. R&D Expense . Research and development expenses were $28.5 million for the third quarter of 2025, as compared to $38.9 million for the third quarter of 2024. The decrease was primarily related to a decrease in process development and manufacturing activities performed by our CDMO partners during the prior year in connection with the Company's clinical trial for ozekibart (INBRX-109). In addition, personnel-related expenses decreased as a result of a decrease in headcount in the current period. G&A Expense . General and administrative expenses were $5.3 million during the third quarter of 2025, compared to $7.9 million during the third quarter of 2024. The decrease was primarily related to decreased legal expenses following the conclusion of legal proceedings as well as decreased personnel-related expenses as a result of a decrease in headcount in the current period. Other Expense. Other expense was $1.4 million during the third quarter of 2025, as compared to other income of $2.9 million during the third quarter of 2024. Other expense in the current period consisted of $3.2 million of interest expense on the Company's $100.0 million outstanding debt balance, offset in part by other income. Other income during each period consisted of interest income earned on the Company's sweep and money market account balances. During the third quarter of 2024, the Company did not incur any interest expense following the extinguishment of all outstanding debt in connection with the 101 Transaction. Net Loss. Net loss was $35.3 million during the third quarter of 2025, or $2.28 per share, basic and diluted, as compared to a net loss of $43.9 million during the third quarter of 2024, or $2.84 per share, basic and diluted. About Inhibrx Biosciences, Inc. Inhibrx is a clinical-stage biopharmaceutical company with a pipeline of novel biologic therapeutic candidates. Inhibrx utilizes diverse methods of protein engineering to address the specific requirements of complex target and disease biology, including its proprietary protein engineering platforms. Inhibrx was incorporated in January 2024 as a direct, wholly-owned subsidiary of Inhibrx, Inc. Prior to the sale of Inhibrx, Inc. and the INBRX-101 program to Sanofi S.A., Inhibrx acquired certain corporate infrastructure and other assets and liabilities through a series of internal restructuring transactions effected by Inhibrx, Inc. Inhibrx, Inc. also completed a distribution to holders of its shares of common stock of 92% of the issued and outstanding shares of Inhibrx. Following such transactions, Inhibrx's current clinical pipeline of therapeutic candidates includes ozekibart (INBRX-109) and INBRX-106, both of which utilize multivalent formats where the precise valency can be optimized in a target-centric way to mediate what Inhibrx believes to be the most appropriate agonist function. For more information, please visit www.inhibrx.com. Forward Looking Statements Inhibrx cautions you that statements contained in this press release regarding matters that are not historical facts are forward-looking statements. These statements are based on Inhibrx's current beliefs and expectations. These forward-looking statements include, but are not limited to, statements regarding statements regarding the safety and efficacy of its therapeutic candidate, ozekibart, based on topline and interim results; the potential for ozekibart to be used for the treatment of chondrosarcoma, colorectal cancer and Ewing sarcoma; any presumption that topline, interim or preliminary data will be representative of final data or data in later clinical trials; and Inhibrx's plans to submit it to the U.S. Food and Drug Administration a biologics license application in the second quarter of 2026. Actual results may differ from those set forth in this press release due to the risks and uncertainties inherent in Inhibrx's business, including, without limitation, risks and uncertainties regarding: topline data may not accurately reflect the complete results of a particular study or trial and remain subject to audit, and final data may differ materially from topline data; the initiation, timing, progress and results of its preclinical studies and clinical trials, and its research and development programs; its ability to advance therapeutic candidates into, and successfully complete, clinical trials; its interpretation of topline, interim or preliminary data from its clinical trials, including interpretations regarding disease control and disease response; the Company's ability to utilize the Company's technology platform to generate and advance additional therapeutic candidates; the implementation of the Company's business model and strategic plans for the Company's business and therapeutic candidates; the scope of protection the Company is able to establish and maintain for intellectual property rights covering the Company's therapeutic candidates; the ability to raise funds needed to satisfy the Company's capital requirements, which may depend on financial, economic and market conditions and other factors, over which the Company may have no or limited control; the Company's financial performance; developments relating to the Company's competitors and the Company's industry; regulatory review and approval of the Company's therapeutic candidates; and other risks described from time to time in the "Risk Factors" section of its filings with the SEC, including those described in its Annual Report on Form 10-K, its Quarterly Reports on Form 10-Q, and supplemented from time to time by its Current Reports on Form 8-K as filed from time to time. You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date hereof, and Inhibrx undertakes no obligation to update these statements to reflect events that occur or circumstances that exist after the date hereof. All forward-looking statements are qualified in their entirety by this cautionary statement, which is made under the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Investor and Media Contact: Kelly D. Deck Chief Financial Officer [email protected] 858-795-4260 View original content to download multimedia:https://www.prnewswire.com/news-releases/inhibrx-reports-third-quarter-2025-financial-results-302615156.html

Inhibrx Biosciences (INBX) drew considerable attention after announcing that its lead candidate, ozekibart, delivered a clear progression-free survival benefit in advanced or metastatic chondrosarcoma during its latest Phase 2 study. This result is especially relevant because ozekibart is now the first investigational therapy to achieve such an outcome in this rare cancer. Patients previously had no systemic treatment options. Interim data in colorectal cancer and Ewing sarcoma further fueled optimism about its potential impact across several challenging tumor types. See our latest analysis for Inhibrx Biosciences. Shares of Inhibrx Biosciences have skyrocketed in response to the breakthrough Phase 2 ozekibart results, with a 1-day share price return of 102% and an impressive 276% year-to-date surge. This wave of momentum reflects renewed optimism around the company’s long-term outlook and potential for value creation as regulatory milestones approach. If Inhibrx’s rapid climb has you watching the biotech space, consider exploring other healthcare innovators with breakthrough therapy ambitions such as See the full list for free. After such an extraordinary run, the key question for investors is whether there is still room for upside in Inhibrx’s stock price, or if the recent rally already reflects all the future growth potential. Inhibrx Biosciences currently trades at a price-to-book ratio of 12.1x, which is significantly higher than both its peers and the broader U.S. biotech industry. The last close price of $57.29 suggests the market is pricing in substantial future growth or unique assets not yet apparent in the financials. The price-to-book ratio compares a company's market capitalization to its book value. This ratio indicates how much investors are willing to pay per dollar of net assets. For a biotech still in its development phase with limited revenue and ongoing losses, such a high multiple typically reflects expectations of future breakthroughs and potential commercialization of pipeline therapies. However, this level is far above the peer average of 4.7x and even more so compared to the U.S. Biotechs industry average of 2.5x. The premium could be justified if ozekibart or other pipeline candidates deliver outsized commercial success. It also means investors are paying an ambitious price today relative to what the company currently owns on its balance sheet. See what the numbers say about this price — find out in our valuation breakdown. Result: Price-to-Book Ratio of 12.1x (OVERVALUED) However, clinical setbacks or future trial disappointments could quickly reverse optimism and put downward pressure on the elevated share price of Inhibrx Biosciences. Find out about the key risks to this Inhibrx Biosciences narrative. If you see things differently or want to dig deeper into the numbers yourself, you can craft your own perspective in just a few minutes and Do it your way. A great starting point for your Inhibrx Biosciences research is our analysis highlighting 1 key reward and 2 important warning signs that could impact your investment decision. Smart investing means staying ahead of the curve, and you could be missing valuable opportunities if you only follow the headlines. Take action and use the Simply Wall St Screener to uncover your next winning investment before everyone else. Target dependable passive income by tapping into these 17 dividend stocks with yields > 3%, which consistently offer yields above 3%. Capitalize on the exponential growth in artificial intelligence with these 27 AI penny stocks, poised to transform global industries. Position yourself early in revolutionary blockchain innovation through these 80 cryptocurrency and blockchain stocks, making waves in digital finance. This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned. Companies discussed in this article include INBX. Have feedback on this article? Concerned about the content? Get in touch with us directly. Alternatively, email [email protected]

Ozekibart meets its primary endpoint in chondrosarcoma, demonstrating a statistically significant and clinically meaningful improvement in median progression-free survival compared to placebo Key secondary endpoints reinforce the primary benefit, demonstrating meaningful improvements in disease control and patient quality of life Inhibrx plans to file a BLA in Q2 of 2026 Interim data from expansion cohorts in patients with colorectal cancer and Ewing sarcoma demonstrate high response and disease control rates in difficult-to-treat, heavily pretreated patients Management to host conference call today at 1:30 p.m. Pacific Time, to review the topline results and ongoing cohorts SAN DIEGO, Oct. 23, 2025 /PRNewswire/ -- Inhibrx Biosciences, Inc. (Nasdaq: INBX) ("Inhibrx" or the "Company"), a clinical-stage biopharmaceutical company focused on developing therapeutics for oncology and rare diseases, today announced positive topline results from the registrational ChonDRAgon study (n= 206) investigating ozekibart (INBRX-109) as a single agent versus placebo in patients with advanced or metastatic, unresectable chondrosarcoma. The Company also provided updates on the ongoing expansion cohorts investigating ozekibart in combination with FOLFIRI in late-line colorectal cancer and in combination with irinotecan and temozolomide in refractory Ewing sarcoma. Chondrosarcoma The ChonDRAgon study met its primary endpoint of a statistically significant and clinically meaningful median progression-free survival (PFS) for patients with advanced or metastatic chondrosarcoma treated with ozekibart compared to placebo. Ozekibart achieved a 52% reduction in the risk of disease progression or death compared to placebo (stratified Hazard Ratio [HR] 0.479; 95% CI: 0.33, 0.68); P<0.0001), more than doubling median PFS to 5.52 months versus 2.66 months for placebo. Importantly, ozekibart is the first investigational therapy to demonstrate a significant PFS benefit in a randomized trial for chondrosarcoma, a disease with no approved systemic options. The benefit of ozekibart was consistent across all pre-specified subgroups, including patients with IDH-wild-type and IDH-mutant tumors. Other key secondary endpoints, including disease control rate (54% vs 27.5%), and delay to deterioration in pain and physical function, further supported the clinical benefit observed with ozekibart. Ozekibart was generally well tolerated, with a manageable safety profile. The most common treatment-related adverse events were fatigue, constipation, and nausea. Hepatotoxicity, a known risk for this mechanism of action, occurs during the first treatment cycle and is in patients with underlying hepatic impairment. One hepatotoxicity-related fatal event occurred early in the study, prior to the implementation of mitigation measures. Over the course of the ChonDRAgon study, this risk was effectively mitigated by excluding patients with severe liver impairment and by implementing close monitoring during early treatment cycles, allowing for prompt management of liver enzyme elevations. This approach resulted in a low overall incidence of treatment-related hepatic adverse events, 11.8% compared to 4.5% in the placebo arm, the majority of which were Grade 1 or 2 in severity. "I am very encouraged and enthusiastic about ozekibart and the impact I have seen on my sarcoma patients," said Dr. Robin Jones, head of the sarcoma unit at The Royal Marsden Hospital in London, United Kingdom. "With no approved treatments available, we have observed that ozekibart helps to keep the cancer from growing, improves how patients feel, and restores a sense of hope for my patients." Detailed results from this trial will be presented at the Connective Tissue Oncology Society (CTOS) Annual Meeting on November 14, 2025. Colorectal Cancer Based on initial results from the Phase 1 trial of ozekibart in combination with FOLFIRI for the treatment of advanced or metastatic, unresectable colorectal cancer (CRC), Inhibrx initiated an expansion cohort enrolling 44 patients, as a fourth line of therapy for approximately 70% of patients and as a third line of therapy for approximately 30% of patients. 80% of patients had been previously treated with regimens containing irinotecan. Efficacy, based on RECIST v1.1 criteria, was assessed in 26 evaluable patients to date who had at least one post-baseline scan. The results show a 23% overall response rate (ORR) and an overall disease control rate of 92%. These outcomes are highly encouraging in a heavily pretreated CRC population, where responses are rare (5-6%) and outcomes are generally poor with the current standard of care. Ozekibart, in combination with FOLFIRI, was well tolerated. The most common treatment-emergent adverse events included anemia, diarrhea, nausea, and fatigue, with the majority being low-grade and consistent with the known safety profile of FOLFIRI. Ewing Sarcoma Based on initial results from the Phase 1 trial of ozekibart in combination with irinotecan and temozolomide (IRI/TMZ) for advanced or metastatic, unresectable, relapsed, or refractory Ewing sarcoma, Inhibrx initiated an expansion cohort which is expected to enroll up to 50 patients. Of the 33 patients recruited to date, more than half were third or fourth line patients. Among the 25 evaluable patients to date, Inhibrx observed a 64% overall response rate (ORR), and a disease control rate of 92%, with the majority of patients experiencing measurable tumor reduction. These outcomes are highly encouraging in this difficult-to-treat patient population as compared to the response rate typically observed with standard IRI/TMZ (15-30%). Overall, ozekibart in combination with IRI/TMZ was well tolerated. The most common adverse events were diarrhea, nausea, anemia, and fatigue, all consistent with the known safety profile of IRI/TMZ. "We are excited by these results which suggest the potential of ozekibart to expand not only in sarcomas but also in high unmet need solid tumor indications," said Mark Lappe, CEO and Co-Founder of Inhibrx. "We look forward to working with the FDA to deliver ozekibart to patients as swiftly as possible." The Company will host a live webcast presentation today, October 23rd, 2025, at 1:30 p.m. Pacific Time to further discuss the results. About the Conference Call Investors may join via the web: https://app.webinar.net/RdZmlEPaEyw or may listen to the call by dialing (1-888-880-3330). Please refer to Inhibrx Biosciences, Inc. or the conference ID 9577647 when calling in. Following the webcast, the presentation may be accessed through a link on the investors section of Inhibrx's website at https://inhibrx.com/inhibrx-biosciences-inc-investors/events-and-presentations. The webcast will be available for 60 days following the event. Following the presentation, Inhibrx will update its corporate presentation within the "Investors" section of its website at www.inhibrx.com. About ozekibart (INBRX-109) Ozekibart is a precision-engineered, tetravalent death receptor 5 (DR5) agonist antibody designed to exploit the tumor-biased cell death induced by DR5 activation. In January 2021, the FDA granted Fast Track designation to ozekibart for the treatment of patients with metastatic or unresectable conventional chondrosarcoma, and, in November 2021, the FDA granted orphan drug designation to ozekibart for chondrosarcoma. In June 2021, Inhibrx initiated a randomized, blinded, placebo-controlled, registrational trial of ozekibart in metastatic, unresectable conventional chondrosarcoma. The trial enrolled a total of 206 patients across 67 different sites worldwide. The primary objective of the trial was the evaluation of the efficacy of ozekibart as measured by median PFS, assessed by central real-time independent radiology review per RECIST 1.1. Secondary objectives were the evaluation of overall survival, median PFS by investigator assessment, quality of life, objective response rate, duration of response, disease control rate, safety and tolerability, pharmacokinetics and anti-drug antibodies to ozekibart. Key enrollment criteria in order for patients to qualify for inclusion in the trial were grade 2 or 3 unresectable or metastatic conventional chondrosarcoma. Patients received either ozekibart or placebo every three weeks at a randomization of 2:1, stratified by the line of therapy, grade and IDH1/2 mutation status. Patients randomized to the placebo arm were allowed to crossover to receive ozekibart upon confirmation of progression as reported by central independent radiology review. In addition to the registrational trial, Inhibrx is advancing ongoing expansion cohorts, evaluating ozekibart in combination with irinotecan-based regimens in Ewing sarcoma and colorectal cancer. Encouraging early signals support further exploration of ozekibart's potential in these difficult-to-treat tumor types with high unmet medical need. About Inhibrx Biosciences, Inc. Inhibrx Biosciences is a clinical-stage biopharmaceutical company focused on developing a broad pipeline of novel biologic therapeutic candidates. Inhibrx Biosciences utilizes diverse methods of protein engineering to address the specific requirements of complex target and disease biology, including its proprietary protein engineering platforms. Inhibrx Biosciences was incorporated in January 2024 as a direct, wholly-owned subsidiary of Inhibrx, Inc. Prior to the sale of Inhibrx, Inc. and the INBRX-101 program to Sanofi S.A., Inhibrx Biosciences acquired certain corporate infrastructure and other assets and liabilities through a series of internal restructuring transactions effected by Inhibrx, Inc. Inhibrx, Inc. also completed a distribution to holders of its shares of common stock of 92% of the issued and outstanding shares of Inhibrx Biosciences. Following such transactions, Inhibrx Biosciences' current clinical pipeline of therapeutic candidates includes ozekibart and INBRX-106, both of which utilize multivalent formats where the precise valency can be optimized in a target-centric way to mediate what we believe to be the most appropriate agonist function. For more information, please visit www.inhibrx.com. Forward-Looking Statements Inhibrx cautions you that statements contained in this press release regarding matters that are not historical facts are forward-looking statements. These statements are based on Inhibrx's current beliefs and expectations. These forward-looking statements include, but are not limited to, statements regarding: Inhibrx's judgments and beliefs regarding the strength of Inhibrx's pipeline; statements regarding the safety and efficacy of its therapeutic candidate, ozekibart, based on topline and interim results; the potential for ozekibart to be used for the treatment of CRC, Ewing sarcoma and solid tumor indications; the clinical development of ozekibart, including expected enrollment in the expansion cohort, data readouts, regulatory submissions and interactions, and the timing thereof; and any presumption that topline, interim or preliminary data will be representative of final data or data in later clinical trials. Actual results may differ from those set forth in this press release due to the risks and uncertainties inherent in Inhibrx's business, including, without limitation, risks and uncertainties regarding: topline data may not accurately reflect the complete results of a particular study or trial and remain subject to audit, and final data may differ materially from topline data; the initiation, timing, progress and results of its preclinical studies and clinical trials, and its research and development programs; its ability to advance therapeutic candidates into, and successfully complete, clinical trials; its interpretation of topline, interim or preliminary data from its clinical trials, including interpretations regarding disease control and disease response; results from preclinical studies or early clinical trials not necessarily being predictive of future results; unexpected adverse side effects or inadequate efficacy of its therapeutic candidates that may limit their development, regulatory approval and/or commercialization; the potential for its programs and prospects to be negatively impacted by developments relating to its competitors, including the results of studies or regulatory determinations relating to its competitors; the timing or likelihood of regulatory filings and approvals and regulatory developments in the U.S. and foreign countries; the successful commercialization of its therapeutic candidates, if approved; an accelerated development or approval pathway may not be available for ozekibart or other therapeutic candidates and any such pathway may not lead to a faster development process; it may not realize the benefits associated with orphan drug designation, including that orphan drug exclusivity may not effectively protect a product from competition and that such exclusivity may not be maintained; the pricing, coverage and reimbursement of its therapeutic candidates, if approved; its ability to utilize its technology platform to generate and advance additional therapeutic candidates; and other risks described from time to time in the "Risk Factors" section of its filings with the U.S. Securities and Exchange Commission, including those described in its Annual Report on Form 10-K, its Quarterly Reports on Form 10-Q, and supplemented from time to time by its Current Reports on Form 8-K as filed from time to time. You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date hereof, and Inhibrx undertakes no obligation to update these statements to reflect events that occur or circumstances that exist after the date hereof. All forward-looking statements are qualified in their entirety by this cautionary statement, which is made under the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Investor and Media Contact: Kelly Deck, CFO [email protected] 858-795-4260 View original content to download multimedia:https://www.prnewswire.com/news-releases/inhibrx-biosciences-reports-positive-topline-results-from-its-registrational-trial-of-ozekibart-inbrx-109-in-chondrosarcoma-and-provides-updates-on-colorectal-cancer-and-ewing-sarcoma-expansion-cohorts-302593250.html

– Event to be webcast live on Thursday, October 23, 2025 at 1:30 p.m. PT – SAN DIEGO, Oct. 22, 2025 /PRNewswire/ -- Inhibrx Biosciences, Inc. (Nasdaq: INBX) ("Inhibrx" or the "Company"), a clinical-stage biopharmaceutical company focused on developing therapeutics for oncology and rare diseases, today announced that it will host a live webcast presentation on Thursday, October 23, 2025 at 1:30 p.m. Pacific Time to provide topline results from the registrational ChonDRAgon study investigating ozekibart (INBRX-109) as a single agent versus placebo in patients with advanced or metastatic, unresectable chondrosarcoma. The Company will also provide an update on the ongoing expansion trials investigating ozekibart in combination with FOLFIRI in late-line colorectal cancer and in combination with irinotecan and temozolomide in refractory Ewing sarcoma. Investors may join via the web: https://app.webinar.net/RdZmlEPaEyw or may listen to the call by dialing (1-888-880-3330). Please refer to Inhibrx Biosciences, Inc. or the conference ID 9577647 when calling in. Following the webcast, the presentation may be accessed through a link on the investors section of Inhibrx's website at https://inhibrx.com/inhibrx-biosciences-inc-investors/events-and-presentations. The webcast will be available for 60 days following the event. Following the presentation, Inhibrx will update its corporate presentation within the "Investors" section of its website at www.inhibrx.com. About ozekibart (INBRX-109) Ozekibart is a precision-engineered, tetravalent death receptor 5 (DR5) agonist antibody designed to exploit the tumor-biased cell death induced by DR5 activation. In January 2021, the FDA granted Fast Track designation to ozekibart for the treatment of patients with metastatic or unresectable conventional chondrosarcoma, and, in November 2021, the FDA granted orphan drug designation to ozekibart for chondrosarcoma. In June 2021, Inhibrx initiated a randomized, blinded, placebo-controlled, registration-enabling Phase 2 trial of ozekibart in metastatic, unresectable conventional chondrosarcoma. Additionally, in Phase 1/2 trials, Inhibrx is investigating ozekibart in colorectal cancer in combination with FOLFIRI and Ewing sarcoma in combination with irinotecan/temozolomide, as well as other tumor types. About Inhibrx Biosciences, Inc. Inhibrx Biosciences is a clinical-stage biopharmaceutical company focused on developing a broad pipeline of novel biologic therapeutic candidates. Inhibrx Biosciences utilizes diverse methods of protein engineering to address the specific requirements of complex target and disease biology, including its proprietary protein engineering platforms. Inhibrx Biosciences was incorporated in January 2024 as a direct, wholly-owned subsidiary of Inhibrx, Inc. Prior to the sale of Inhibrx, Inc. and the INBRX-101 program to Sanofi S.A., Inhibrx Biosciences acquired certain corporate infrastructure and other assets and liabilities through a series of internal restructuring transactions effected by Inhibrx, Inc. Inhibrx, Inc. also completed a distribution to holders of its shares of common stock of 92% of the issued and outstanding shares of Inhibrx Biosciences. Following such transactions, Inhibrx Biosciences' current clinical pipeline of therapeutic candidates includes ozekibart and INBRX-106, both of which utilize multivalent formats where the precise valency can be optimized in a target-centric way to mediate what we believe to be the most appropriate agonist function. For more information, please visit www.inhibrx.com. Forward-Looking Statements Inhibrx cautions you that statements contained in this press release regarding matters that are not historical facts are forward-looking statements. These statements are based on Inhibrx's current beliefs and expectations. These forward-looking statements include, but are not limited to, statements regarding the clinical development of ozekibart. Actual results may differ from those set forth in this press release due to the risks and uncertainties inherent in Inhibrx's business, including, without limitation, risks and uncertainties regarding: the initiation, timing, progress and results of its preclinical studies and clinical trials, and its research and development programs; its ability to advance therapeutic candidates into, and successfully complete, clinical trials; its interpretation of initial, interim or preliminary data from its clinical trials, including interpretations regarding disease control and disease response; results from preclinical studies or early clinical trials not necessarily being predictive of future results; unexpected adverse side effects or inadequate efficacy of its therapeutic candidates that may limit their development, regulatory approval and/or commercialization; the potential for its programs and prospects to be negatively impacted by developments relating to its competitors, including the results of studies or regulatory determinations relating to its competitors; the timing or likelihood of regulatory filings and approvals and regulatory developments in the U.S. and foreign countries; the successful commercialization of its therapeutic candidates, if approved; an accelerated development or approval pathway may not be available for ozekibart or other therapeutic candidates and any such pathway may not lead to a faster development process; it may not realize the benefits associated with orphan drug designation, including that orphan drug exclusivity may not effectively protect a product from competition and that such exclusivity may not be maintained; the pricing, coverage and reimbursement of its therapeutic candidates, if approved; its ability to utilize its technology platform to generate and advance additional therapeutic candidates; and other risks described from time to time in the "Risk Factors" section of its filings with the U.S. Securities and Exchange Commission, including those described in its Annual Report on Form 10-K, its Quarterly Reports on Form 10-Q, and supplemented from time to time by its Current Reports on Form 8-K as filed from time to time. You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date hereof, and Inhibrx undertakes no obligation to update these statements to reflect events that occur or circumstances that exist after the date hereof. All forward-looking statements are qualified in their entirety by this cautionary statement, which is made under the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Investor and Media Contact: Kelly Deck, CFO [email protected] 858-795-4260 View original content to download multimedia:https://www.prnewswire.com/news-releases/inhibrx-to-host-webcast-presentation-of-topline-results-from-its-registrational-trial-of-ozekibart-inbrx-109-in-chondrosarcoma-and-to-provide-updates-on-colorectal-cancer-and-ewing-sarcoma-expansion-cohorts-302591875.html

SAN DIEGO, Aug. 13, 2025 /PRNewswire/ -- Inhibrx Biosciences, Inc. (Nasdaq: INBX) ("Inhibrx" or the "Company") today reported financial results for the second quarter of 2025. Following the completion of the sale of INBRX-101 (the "101 Transaction") by Inhibrx, Inc. (the "Former Parent") to Sanofi S.A. and the Former Parent's concurrent spin-off of the Inhibrx business in May 2024, the biopharmaceutical company now has two programs in ongoing clinical trials, with data readouts for each expected within the current year. Because the spin-off was accounted for as a reverse spin-off, for periods prior to the spin-off, the Company's financial statements are the historical financial statements of the Former Parent. Upcoming Milestones The ozekibart (INBRX-109) registration-enabling Phase 2 trial in unresectable or metastatic conventional chondrosarcoma completed full enrollment in July 2025. The completion of 151 progression free survival events are required to unblind the study. The Company expects to announce these results by late October 2025. The Company plans to announce interim data from the Ewing sarcoma and colorectal cancer expansion cohorts at that time as well. Initial Phase 2 data from the INBRX-106 randomized Phase 2/3 trial in head and neck squamous cell carcinoma in combination with KEYTRUDA® (pembrolizumab) are expected during the fourth quarter of 2025, as well as interim data from the Phase 1/2 checkpoint inhibitor refractory or relapsed non-small cell lung cancer trial. Financial Results Cash and Cash Equivalents. As of June 30, 2025, Inhibrx had cash and cash equivalents of $186.6 million, as compared to $216.5 million as of March 31, 2025. Revenue. Revenue was $1.3 million during the second quarter of 2025, as compared to $0.1 million during the second quarter of 2024. The revenue recognized in the first quarter of 2025 was due to the completion of Inhibrx's performance obligations under a license and assignment agreement with Scithera, Inc. The revenue recognized in the second quarter of 2024 was related to an option and license agreement with Regeneron Pharmaceuticals, Inc. and was recognized following the grant of a six-month extension of the option term for one of the selected programs. R&D Expense. Research and development expenses were $22.3 million for the second quarter of 2025, as compared to $67.6 million for the second quarter of 2024. The decrease was primarily related to expenses in 2024 that did not recur in 2025, such as clinical trial and contract manufacturing activities under the INBRX‑101 program that were eliminated following the 101 Transaction, as well as additional stock option expense incurred upon acceleration of all unvested stock options as part of the 101 Transaction. Additionally, 2024 included other non-recurring expenses including sponsored research, preclinical activities, and purchases of bulk raw materials and lab supplies. G&A Expense. General and administrative expenses were $6.4 million during the second quarter of 2025, compared to $93.4 million during the second quarter of 2024. The decrease was primarily related to 101 Transaction expenses in 2024 that did not recur in 2025, including legal, advisory, and consulting services, U.S. Securities and Exchange Commission ("SEC") filing fees, and additional stock option expense incurred upon acceleration of all unvested stock options as part of the 101 Transaction. Other Income (Expense). Other expense was $1.3 million during the second quarter of 2025, as compared to other income of $2.0 billion during the second quarter of 2024. The decrease was primarily related to the $2.0 billion gain recorded in connection with the completion of the 101 Transaction in the second quarter of 2024. Additionally, interest expense decreased relative to the outstanding debt balance in each period and was offset in part by interest income earned on the Company's sweep and money market account balances in each period. Net Income (Loss). Net loss was $28.7 million during the second quarter of 2025, or $1.85 per share, basic and diluted, as compared to a net income of $1.9 billion during the second quarter of 2024, or earnings per share of $127.10, basic and $125.48, diluted. The decrease was primarily related to the $2.0 billion gain recorded in connection with the completion of the 101 Transaction in the second quarter of 2024, offset in both periods by operational losses. About Inhibrx Biosciences, Inc. Inhibrx is a clinical-stage biopharmaceutical company with a pipeline of novel biologic therapeutic candidates. Inhibrx utilizes diverse methods of protein engineering to address the specific requirements of complex target and disease biology, including its proprietary protein engineering platforms. Inhibrx was incorporated in January 2024 as a direct, wholly-owned subsidiary of Inhibrx, Inc. Prior to the sale of Inhibrx, Inc. and the INBRX-101 program to Sanofi S.A., Inhibrx acquired certain corporate infrastructure and other assets and liabilities through a series of internal restructuring transactions effected by Inhibrx, Inc. Inhibrx, Inc. also completed a distribution to holders of its shares of common stock of 92% of the issued and outstanding shares of Inhibrx. Following such transactions, Inhibrx's current clinical pipeline of therapeutic candidates includes ozekibart (INBRX-109) and INBRX-106, both of which utilize multivalent formats where the precise valency can be optimized in a target-centric way to mediate what Inhibrx believes to be the most appropriate agonist function. For more information, please visit www.inhibrx.com. Forward Looking Statements Inhibrx cautions you that statements contained in this press release regarding matters that are not historical facts are forward-looking statements. These statements are based on Inhibrx's current beliefs and expectations. These forward-looking statements include, but are not limited to, statements regarding expected data readouts and the timing thereof and the Company's ability to develop therapeutic candidates. Actual results may differ from those set forth in this press release due to the risks and uncertainties inherent in Inhibrx's business, including, without limitation, risks and uncertainties regarding: the initiation, timing, progress and results of its preclinical studies and clinical trials, and its research and development programs; its ability to advance therapeutic candidates into, and successfully complete, clinical trials; the Company's ability to utilize the Company's technology platform to generate and advance additional therapeutic candidates; the implementation of the Company's business model and strategic plans for the Company's business and therapeutic candidates; the scope of protection the Company is able to establish and maintain for intellectual property rights covering the Company's therapeutic candidates; the ability to raise funds needed to satisfy the Company's capital requirements, which may depend on financial, economic and market conditions and other factors, over which the Company may have no or limited control; the Company's financial performance; developments relating to the Company's competitors and the Company's industry; regulatory review and approval of the Company's therapeutic candidates; and other risks described from time to time in the "Risk Factors" section of its filings with the SEC, including those described in its Annual Report on Form 10-K, its Quarterly Reports on Form 10-Q, and supplemented from time to time by its Current Reports on Form 8-K as filed from time to time. You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date hereof, and Inhibrx undertakes no obligation to update these statements to reflect events that occur or circumstances that exist after the date hereof. All forward-looking statements are qualified in their entirety by this cautionary statement, which is made under the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Investor and Media Contact: Kelly D. Deck Chief Financial Officer [email protected] 858-795-4260 View original content to download multimedia:https://www.prnewswire.com/news-releases/inhibrx-reports-second-quarter-2025-financial-results-302528039.html SOURCE Inhibrx Biosciences, Inc.