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LOTIS - 5 Topline Results Presentation JUNE 3, 2026

Forward - Looking Statements This presentation and any accompanying oral presentation have been prepared by ADC Therapeutics SA ("ADC Therapeutics“, “we” or “us”) for informational purposes only and not for any other purpose. Nothing contained in this presentation is, or should be construed as, a recommendation, promise or representation by th e presenter or ADC Therapeutics or any officer, director, employee, agent or advisor of ADC Therapeutics. This presentation does not purport to be all - inclusive or to contain all of the information you may desire. Information provided in this presentation and any accompanying oral presentation speak only as of the date hereof. This presentation contains forward - looking statements within the meaning of the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. In some cases you can identify forward - looking statements by terminology such as "may", "will", "should", "would", "expect", "intend", "plan", "anticipate", "believ e", "estimate", "predict", "potential", "seem", "seek", "future", "continue", or "appear" or the negative of these terms or similar expressions, although not all forward - looking statements contain these identi fying words. Forward - looking statements are subject to certain risks and uncertainties that can cause actual results to differ materially from those described. Factors that may cause such difference s i nclude, but are not limited to: the adequacy of the LOTIS - 5 clinical trial data to support full regulatory approval and our ability to maintain accelerated approval in the United States and foreign ju ris dictions for our product; the timing, content and outcome of meetings with and feedback or other communications provided by regulatory authorities including U.S. FDA; the timing, submission and accept anc e of an sBLA submission related to LOTIS - 5 and potential approval; the actual and perceived benefit - risk profile for ZYNLONTA as studied in the LOTIS - 5 trial; the assessment of the data from LOTI S - 5 study, including additional analyses of outcomes observed for safety, efficacy and within key geographic regions and across certain patient sub - populations; the path for full regulatory approval for ZYNLONTA in the United States and foreign jurisdictions; our ability to identify and execute value - maximizing options and the cost and impact of such options; our expected cash runway into at least 20 28; our ability to comply with the terms of our indebtedness; changes in our regulatory and commercial strategy; the Company's ability to sustain or grow ZYNLONTA® revenue in the United States and p ote ntial peak revenue; the ability of our partners to commercialize ZYNLONTA® in foreign markets, the timing and amount of future revenue and payments to us from such partnerships and their abi lit y to obtain regulatory approval for ZYNLONTA® in foreign jurisdictions; the timing, results and publication of the Company's clinical trials including LOTIS - 7; the timing, publication and results of investigator - initiated trials including those studying FL and MZL and the potential regulatory and/or compendia strategy and the future opportunity; the timing and outcome of regulatory submissions f or the Company's products or product candidates; actions by the FDA or foreign regulatory authorities; projected revenue and expenses; the Company's indebtedness, including HealthCare Royalty Mana gem ent and Blue Owl and Oaktree facilities, and the restrictions imposed on the Company's activities by such indebtedness, the ability to comply with the terms of the various agreements and rep ay such indebtedness and the significant cash required to service such indebtedness; and the Company's ability to obtain financial and other resources for its research, development, clinical, and com mercial activities; and the uncertainties of international trade policies, including tariffs, sanctions, trade barriers and most favored nation drug pricing and the potential impact they may have on o ur business, financial condition, and results of operations. Additional information concerning these and other factors that may cause actual results to differ materially from those anticipated in t he forward - looking statements is contained in the "Risk Factors" section of the Company's Annual Report on Form 10 - K and in the Company's other periodic and current reports and filings with the U.S. Secur ities and Exchange Commission. These statements involve known and unknown risks, uncertainties and other factors that may cause actual results, performance, achievements or prospects to be ma ter ially different from any future results, performance, achievements or prospects expressed in or implied by such forward - looking statements. The Company cautions investors not to place undue reliance on the forward - looking statements contained in this document. Forward - looking statements are based on our management’s beliefs and assumptions and on information currently available to our m anagement. No assurance can be given that such future results will be achieved. Such forward - looking statements contained in this presentation speak only as of the date of this presentation. The Company expressly disclaim any obligation or undertaking to update these forward - looking statements contained in this presentation to reflect any change in our expectations or any change in event s, conditions, or circumstances on which such statements are based unless required to do so by applicable law. No representations or warranties (expressed or implied) are made about the accura cy of any such forward - looking statements. Certain information contained in this presentation relates to or is based on studies, publications, surveys, and other data d eri ved from third - party sources and our own internal estimates and research. While we believe these third - party sources to be reliable as of the date of this presentation, we have not independently verifie d, and we make no representation as to the adequacy, fairness, accuracy or completeness of, any information obtained from third - party sources. In addition, all of the market data included in this present ation involve a number of assumptions and limitations, and there can be no guarantee as to the accuracy or reliability of such assumptions. Finally, although we believe our own internal research is re liable, such research has not been verified by any independent source. LOTIS - 5 Topline Results 2

LOTIS - 5 Topline Results 3 Agenda Introduction Ameet Mallik Chief Executive Officer 01 Clinical Highlights Mohamed Zaki Chief Medical Officer 02 03 Q&A 04 Next Steps Ameet Mallik Chief Executive Officer

LOTIS - 5 Topline Results 4 ZYNLONTA ® is an approved, highly - potent, single - agent anti - CD19 ADC in r/r DLBCL ZYNLONTA ( loncastuximab tesirine ) is a CD19 - directed ADC indicated as monotherapy for the treatment of adult patients with relapsed or refractory large B - cell lymphoma after two or more lines of systemic therapy; currently FDA approved under accelerated approval Please visit ZYNLONTA.com for complete prescribing information including indication, warnings and precautions. ADC = antibody drug conjugate; PBD = Pyrrolobenzodiazepine ; DNA = deoxyribonucleic acid; FDA = Food and Drug Administration; r/r = relapsed / refractory; DLBCL = diffuse large b - cell lymphoma Protease - cleavable valine - alanine linker PBD dimer - cytotoxic alkylating agent CD19 directed mAb Binding to CD19 on cell - surface Endocytosis of ADC - antigen complex Lysosomal degradation Release of PBD payload Binding of cytotoxic PBD payload to DNA DNA damage induced apoptosis PBD payload DNA CD19 protein Malignant B Cell ZYNLONTA ANTI - CD19 ADC Accessible across care settings Manageable safety profile ~5K patients treated since 2021 FDA approval Rapid, deep, durable efficacy in 3L+ DLBCL

LOTIS - 5 Topline Results 5 Advancing ZYNLONTA Development Into 2L+ B - Cell Lymphomas DLBCL = diffuse large b - cell lymphoma; FL = follicular lymphoma; MZL = marginal zone lymphoma, IIT = Investigator initiated tria l → 2L+ treatment choice is based largely on achieving a rapid and durable complete response , within the accessible treatment options for each individual patient → ZYNLONTA is being studied in combination with two different approved agents ZYNLONTA + rituximab Ph 3 LOTIS - 5 ZYNLONTA + glofitamab Ph 1b LOTIS - 7 2L+ DLBCL → 2L+ treatment choice is driven by tolerability and QoL as well as rate and durability of overall response for both MZL and FL → ZYNLONTA is being studied in combination and as monotherapy r/r MZL and FL, respectively ZYNLONTA + rituximab Ph 2 FL IIT ZYNLONTA Ph 2 MZL IIT 2L+ Indolent Lymphomas Q4 26 Q4 26 Q2 27 Data Readout

LOTIS - 5 Topline Results 6 ZYNLONTA has the Potential to Play a Role in Two Distinct r/r DLBCL Segments Through a Complementary Approach + Based on internal market research conducted July to August 2024 (n=160 US Hem/ Oncs ), glofitamab ODAC briefing book dated May 20, 2025, and Komodo claims data January - June 2025; *2026 Clarivate Non - Hodgkin’s Lymphoma and Chronic Lymphocytic Leukemia Disease Landscape and Forecast r/r = relapsed refractory; DLBCL = diffuse large b - cell lymphoma; SCT = stem cell transplant 10% 20% 30% 5% 10% 20% 5% 2L ~12k patients 3L+ ~6k patients Complex Therapies Broadly Accessible Therapies Bispecifics CAR - T SCT Pola+BR Tafa+Len R - Chemo other 10% 5% 10% 5% 10% 35% 20% 5% Complex Therapies Broadly Accessible Therapies ~10% ZYNLONTA Current r/r DLBCL U.S. Market + 2L+ DLBCL market, comprised of two key segments, projected to be ~$3Bn in U.S. by 2030* □ Broadly accessible outpatient therapies which can be administered across care settings □ Complex therapies with unique patient management and infrastructure requirements ZYNLONTA + rituximab LOTIS - 5 ZYNLONTA + glofitamab LOTIS - 7

LOTIS - 5 Topline Results 7 LOTIS - 5: Phase 3 Confirmatory Trial of ZYNLONTA in Combination with Rituximab in 2L+ DLBCL Lonca 150 µg/kg + rituximab 375 mg/m2 Q3W for 2 cycles, then Lonca 75 µg/kg + rituximab 375 mg/m2 Q3W for up to 6 additional cycles Part 1 safety run - in (N=20) previously published DLBCL = diffuse large B - cell lymphoma; SCT = stem cell transplant; Q3W = every three weeks, Q2W = every two weeks; PFS = progres sion free survival; OS = overall survival; ORR = overall response rate; CRR = complete response rate; DOR = duration of response; DoCR = duration of complete response; PK = pharmacokinetic; PRO = patient reported outcomes; EOT = end of treatment Data cut off: February 16, 2026. **after EOT until withdrawal of consent, loss to follow - up, or death — whichever occurs first Key Inclusion/Exclusion Criteria → Adults with a pathologic diagnosis of 2L+ DLBCL who are not a candidate for SCT based on investigator assessment Endpoints → Primary endpoint: PFS by independent central review; → Key secondary endpoint: OS → Other secondary endpoints: ORR/CRR, DOR, DoCR , safety, PK parameters, immunogenicity, and PROs Cycles 1 – 2 Cycles 3 – (up to) 8 Follow Up for PFS and OS for up to 4 years** Loncastuximab 150 µg/kg + rituximab 375 mg/m 2 Q3W Loncastuximab 75 µg/kg + rituximab 375 mg/m 2 Q3W R - GemOx : rituximab 375 mg/m 2 + gemcitabine 1000 mg/m 2 + oxaliplatin 100 mg/m 2 Q2W Clinical Trial Design Randomized 1:1 (N=420) 210 patients per arm

LOTIS - 5 Topline Results 8 Patient population enrolled generally balanced between arms Baseline Patient Characteristics Percentages may not add due to rounding. Lonca - R = loncastuximab tesirine - lpyl with rituximab; R - GemOx = rituximab + gemcitabine + oxaliplatin; ECOG = Eastern Cooperative Oncology Group; ROW = rest of world; DLBCL = diffuse large B - cell lymphoma; NOS = not otherwise specified; HGBCL = high grade B - cell lymphoma; DH = double hi t; TH = triple hit; GCB = germinal center B - cell; ABC = Activated B - cell Like; IPI = international prognostic index ITT Population (N=420); Data cut off: February 16, 2026. R - GemOx N=210 (%) Lonca - R N=210 (%) Characteristic DLBCL Subtype 98 (46.7%) 107 (51.0%) 5 (2.4%) 98 (46.7%) 94 (44.8%) 18 (8.6%) GCB Non - GCB (including ABC) Unknown 12 (5.7%) 15 (7.1%) Double/Triple hit 137 (65.2%) 132 (62.9%) IPI Score 3 - 5 28 (13.3%) 29 (13.8%) Bulky Disease (≥10 cm) Number of prior lines of therapy 133 (63.3%) 77 (36.7%) 133 (63.3%) 77 (36.7%) 1 ≥2 1 (1,6) 1 (0,5) Median (range) 12 (5.7%) 3 (1.4%) Prior Stem Cell Transplant 5 (2.4%) 5 (2.4%) Prior CAR - T Therapy 128 (61.0%) 131 (62.4%) Refractory to primary therapy * 88 (41.9%) 88 (41.9%) Refractory to last prior therapy ** R - GemOx N=210 (%) Lonca - R N=210 (%) Characteristic 72 [27,91] 79 (37.6%) 73 [34,91] 87 (41.4%) Median age yr [range] ≥75 years 113 (53.8%) 99 (47.1%) Male ECOG Perf Status 73 (34.8%) 93 (44.3%) 43 (20.5%) 1 (0.5%) 63 (30.0%) 121 (57.6%) 26 (12.4%) 0 0 1 2 ≥3 Regional Enrollment 71 (33.8%) 45 (21.4%) 17 (8.1%) 77 (36.7%) 91 (43.3%) 46 (21.9%) 13 (6.2%) 60 (28.6%) Europe, n (%) Asia, n (%) North America, n (%) ROW, n (%) Large B - Cell Lymphoma Histology 191 (91.0%) 10 (4.8%) 9 (4.3%) 183 (87.1%) 15 (7.1%) 12 (5.7%) DLBCL NOS HGBCL with DH/TH HGBCL NOS * Failed to respond, or disease recurred within 6 months after first line treatment ended ** Failed to respond, or disease recurrence following the most recent line of treatment ended

LOTIS - 5 Topline Results 9 Summary of key results LOTIS - 5: Efficacy PFS = progression free survival; HR = hazard ratio; OS = overall survival; NALT = new anti - lymphoma therapy; CR = complete respo nse; Data cut off: February 16, 2026. Study met primary PFS endpoint with statistical significance (HR=0.73, two - sided p - value 0.008) No detrimental effect on key secondary efficacy endpoint of OS (HR=0.96, impacted by earlier use and higher rate of NALT in control arm) Higher CR rate in ZYNLONTA plus rituximab arm (~40% vs. ~27%) Longer duration of CRs with higher proportion maintained at 24 - months (~49% vs. ~17%) in ZYNLONTA plus rituximab arm Results in North America region consistent with overall study results

LOTIS - 5 Topline Results 10 Met primary endpoint of PFS with statistical significance Progression Free Survival by IRC *Other reasons include starting NALT without confirmed PD, no postbaseline assessment, or consent withdrawal. IRC = Independent Review Committee, PFS = progression free survival; Lonca - R = loncastuximab tesirine - lpyl with rituximab; R - GemOx = rituximab + gemcitabine + oxaliplatin; PD = progressive disease; NALT = new anti - lymphoma therapy ITT Population (N=420); Data cut off: February 16, 2026. # of Event/Censored Event/Censored Description Total 420 R - GemOx N=210 Lonca - R N=210 279 (66.4%) 141 (67.1%) 138 (65.7%) Total # of Events 118 93 Disease Progression 23 45 Death 141 (33.6%) 69 (32.9%) 72 (34.3%) Total Censored 52 (12.4%) 16 (7.6%) 36 (17.1%) Ongoing 89 (21.2%) 53 (25.2%) 36 (17.1%) Censored due to other reasons* R - GemOx, % Lonca - R, % Event - free rate (95% CI) 38.9 (31.4, 46.3) 50.4 (43.0, 57.3) 6M 23.7 (17.2, 30.8) 29.6 (22.9, 36.5) 12M 14.7 (9.2, 21.5) 25.1 (18.7, 32.0) 18M 9.5 (4.8, 16.2) 23.2 (16.9, 30.1) 24M ͏ ϟ ͏ ͏ ϟ ͐ ͏ ϟ ͑ ͏ ϟ ͒ ͏ ϟ ͓ ͏ ϟ ͔ ͏ ϟ ͕ ͏ ϟ ͖ ͏ ϟ ͗ ͏ ϟ ͘ ͐ ϟ ͏ ͏ ϟ ͏ ͏ ϟ ͐ ͏ ϟ ͑ ͏ ϟ ͒ ͏ ϟ ͓ ͏ ϟ ͔ ͏ ϟ ͕ ͏ ϟ ͖ ͏ ϟ ͗ ͏ ϟ ͘ ͐ ϟ ͏ ť ϙ Ř Ė Ŝ ħ ϙϡ “ Ė ı ô ϙ ϼ ı ĺ Ĳ ť ē Ŝ Ͻ ͑ ͐͏ ͑ ͐͏ ͐ ͗͐ ͐ ͗͐ ͐ ͐͑ ͐ ͐͑ ͗ ͘ ͗ ͘ ͗ ͏ ͗ ͏ ͖ ͐ ͖ ͐ ͔ ͕ ͔ ͕ ͔ ͏ ͔ ͏ ͓ ͒ ͓ ͒ ͓ ͐ ͓ ͐ ͒ ͕ ͒ ͕ ͒ ͓ ͒ ͓ ͒ ͏ ͒ ͏ ͑ ͕ ͑ ͕ ͑ ͔ ͑ ͔ ͑ ͑ ͑ ͑ ͐ ͘ ͐ ͘ ͐ ͓ ͐ ͓ ͐ ͑ ͐ ͑ ͐ ͐ ͐ ͐ ͐ ͐ ͐ ͐ ͐ ͏ ͐ ͏ ͘ ͘ ͓ ͓ ͑ ͑ ͑ ͑ ͑ ͑ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͐ ͐ ͑ ͑ ͒ ͒ ͓ ͓ ͔ ͔ ͕ ͕ ͖ ͖ ͗ ͗ ͘ ͘ ͐ ͏ ͐ ͏ ͐ ͐ ͐ ͐ ͐ ͑ ͐ ͑ ͐ ͒ ͐ ͒ ͐ ͓ ͐ ͓ ͐ ͔ ͐ ͔ ͐ ͕ ͐ ͕ ͐ ͖ ͐ ͖ ͐ ͗ ͐ ͗ ͐ ͘ ͐ ͘ ͑ ͏ ͑ ͏ ͑ ͐ ͑ ͐ ͑ ͑ ͑ ͑ ͑ ͒ ͑ ͒ ͑ ͓ ͑ ͓ ͑ ͔ ͑ ͔ ͑ ͕ ͑ ͕ ͑ ͖ ͑ ͖ ͑ ͗ ͑ ͗ ͑ ͘ ͑ ͘ ͒ ͏ ͒ ͏ ͒ ͐ ͒ ͐ ͒ ͑ ͒ ͑ ͒ ͒ ͒ ͒ ͒ ͓ ͒ ͓ ͒ ͔ ͒ ͔ ͒ ͕ ͒ ͕ ͒ ͖ ͒ ͖ ͒ ͗ ͒ ͗ ͒ ͘ ͒ ͘ ͓ ͏ ͓ ͏ ͓ ͐ ͓ ͐ ͓ ͑ ͓ ͑ ͑ ͐͏ ͑ ͐͏ ͐ ͖͗ ͐ ͖͗ ͐ ͓͏ ͐ ͓͏ ͐ ͒͐ ͐ ͒͐ ͐ ͖͐ ͐ ͖͐ ͐ ͏͔ ͐ ͏͔ ͗ ͖ ͗ ͖ ͗ ͐ ͗ ͐ ͖ ͔ ͖ ͔ ͕ ͑ ͕ ͑ ͔ ͓ ͔ ͓ ͓ ͖ ͓ ͖ ͓ ͓ ͓ ͓ ͒ ͘ ͒ ͘ ͒ ͖ ͒ ͖ ͒ ͓ ͒ ͓ ͒ ͒ ͒ ͒ ͑ ͘ ͑ ͘ ͑ ͖ ͑ ͖ ͑ ͓ ͑ ͓ ͑ ͐ ͑ ͐ ͑ ͐ ͑ ͐ ͐ ͘ ͐ ͘ ͐ ͖ ͐ ͖ ͐ ͔ ͐ ͔ ͐ ͑ ͐ ͑ ͐ ͏ ͐ ͏ ͐ ͏ ͐ ͏ ͐ ͏ ͐ ͏ ͘ ͘ ͖ ͖ ͔ ͔ ͓ ͓ ͓ ͓ ͓ ͓ ͒ ͒ ͒ ͒ ͒ ͒ ͒ ͒ ͒ ͒ ͑ ͑ ͐ ͐ ͏ ͏ [ i b ϱ ‡ ‡ ϱ @( a i³ „ Ř ĺ æ Í æ Ė ī Ė ťƅ Lonca - R : R - GemOx : Censored : Median PFS, months (95% CI): Lonca - R : 6.14 (4.99, 8.11) R - GemOx : 4.73 (2.83, 5.55) Hazard Ratio (95% CI): 0.73 (0.57, 0.92) Two - sided p - value: 0.0084 Patients at risk:

LOTIS - 5 Topline Results 11 Difference from IRC assessment reflects lower censoring in investigator reported data Progression Free Survival by Investigator Assessment *Other reasons include starting NALT without confirmed PD, no postbaseline assessment, or consent withdrawal. IRC = Independent Review Committee, PFS = progression free survival; Lonca - R = loncastuximab tesirine - lpyl with rituximab; R - GemOx = rituximab + gemcitabine + oxaliplatin; PD = progressive disease; NALT = new anti - lymphoma therapy ITT Population (N=420); Data cut off: February 16, 2026. # of Event/Censored Event/Censored Description Total 420 R - GEMOX N=210 LONCA - R N=210 306 (72.9%) 158 (75.2%) 148 (70.5%) Total # of Events 248 142 106 Disease Progression 58 16 42 Death 114 (27.1%) 52 (24.8%) 62 (29.5%) Total Censored 57 (13.6%) 18 (8.6%) 39 (18.6%) Ongoing 57 (13.6%) 34 (16.2%) 23 (11.0%) Censored due to other reasons* R - GemOx, % Lonca - R, % Event - free rate (95% CI) 32.6 (25.8, 39.6) 47.1 (40.0, 53.9) 6M 17.5 (12.2, 23.7) 29.1 (22.8, 35.8) 12M 13.3 (8.4, 19.3) 25.8 (19.6, 32.4) 18M 8.4 (4.1 14.7) 24.0 (17.9, 30.7) 24M “ Ė ı ôϙ ϼ ı ĺ Ĳ ť ē Ŝ Ͻ [ i b ϱ ‡ ͑ ͐͏ ͐ ͗͏ ͐ ͏͗ ͗ ͔ ͖ ͘ ͖ ͏ ͔ ͒ ͓ ͘ ͓ ͑ ͒ ͗ ͒ ͓ ͒ ͐ ͑ ͕ ͑ ͕ ͑ ͔ ͑ ͒ ͑ ͏ ͐ ͔ ͐ ͒ ͐ ͑ ͐ ͑ ͐ ͑ ͐ ͐ ͔ ͒ ͒ ͒ ͐ ͐ ͐ ͐ ͐ ͐ ͐ ͐ ͐ ͐ ͐ ͏ ͏ ͏ ͏ ͏ ͑ ͐͏ ͐ ͗͏ ͐ ͏͗ ͗ ͔ ͖ ͘ ͖ ͏ ͔ ͒ ͓ ͘ ͓ ͑ ͒ ͗ ͒ ͓ ͒ ͐ ͑ ͕ ͑ ͕ ͑ ͔ ͑ ͒ ͑ ͏ ͐ ͔ ͐ ͒ ͐ ͑ ͐ ͑ ͐ ͑ ͐ ͐ ͔ ͒ ͒ ͒ ͐ ͐ ͐ ͐ ͐ ͐ ͐ ͐ ͐ ͐ ͐ ͏ ͏ ͏ ͏ ͏ ‡ ϱ @( a i³ ͏ ͐ ͑ ͒ ͓ ͔ ͕ ͖ ͗ ͘ ͐ ͏ ͐ ͐ ͐ ͑ ͐ ͒ ͐ ͓ ͐ ͔ ͐ ͕ ͐ ͖ ͐ ͗ ͐ ͘ ͑ ͏ ͑ ͐ ͑ ͑ ͑ ͒ ͑ ͓ ͑ ͔ ͑ ͕ ͑ ͖ ͑ ͗ ͑ ͘ ͒ ͏ ͒ ͐ ͒ ͑ ͒ ͒ ͒ ͓ ͒ ͔ ͒ ͕ ͒ ͖ ͒ ͗ ͒ ͘ ͓ ͏ ͓ ͐ ͓ ͑ ͏ ͐ ͑ ͒ ͓ ͔ ͕ ͖ ͗ ͘ ͐ ͏ ͐ ͐ ͐ ͑ ͐ ͒ ͐ ͓ ͐ ͔ ͐ ͕ ͐ ͖ ͐ ͗ ͐ ͘ ͑ ͏ ͑ ͐ ͑ ͑ ͑ ͒ ͑ ͓ ͑ ͔ ͑ ͕ ͑ ͖ ͑ ͗ ͑ ͘ ͒ ͏ ͒ ͐ ͒ ͑ ͒ ͒ ͒ ͓ ͒ ͔ ͒ ͕ ͒ ͖ ͒ ͗ ͒ ͘ ͓ ͏ ͓ ͐ ͓ ͑ ͏ ϟ ͏ ͏ ϟ ͐ ͏ ϟ ͑ ͏ ϟ ͒ ͏ ϟ ͓ ͏ ϟ ͔ ͏ ϟ ͕ ͏ ϟ ͖ ͏ ϟ ͗ ͏ ϟ ͘ ͐ ϟ ͏ „ Ř ĺ æ Í æ Ė ī Ė ťƅ ť ϙ Ř Ė Ŝ ħ ϙϡ ͑ ͐͏ ͐ ͒͘ ͐ ͓͒ ͐ ͒͑ ͐ ͖͐ ͐ ͏͗ ͗ ͗ ͗ ͒ ͖ ͗ ͕ ͕ ͔ ͗ ͔ ͐ ͓ ͗ ͓ ͓ ͓ ͑ ͓ ͏ ͒ ͗ ͒ ͒ ͒ ͐ ͑ ͖ ͑ ͓ ͑ ͓ ͑ ͑ ͐ ͘ ͐ ͖ ͐ ͓ ͐ ͑ ͐ ͑ ͐ ͑ ͐ ͐ ͘ ͖ ͕ ͔ ͔ ͓ ͓ ͒ ͒ ͒ ͑ ͐ ͏ ͑ ͐͏ ͐ ͒͘ ͐ ͓͒ ͐ ͒͑ ͐ ͖͐ ͐ ͏͗ ͗ ͗ ͗ ͒ ͖ ͗ ͕ ͕ ͔ ͗ ͔ ͐ ͓ ͗ ͓ ͓ ͓ ͑ ͓ ͏ ͒ ͗ ͒ ͒ ͒ ͐ ͑ ͖ ͑ ͓ ͑ ͓ ͑ ͑ ͐ ͘ ͐ ͖ ͐ ͓ ͐ ͑ ͐ ͑ ͐ ͑ ͐ ͐ ͘ ͖ ͕ ͔ ͔ ͓ ͓ ͒ ͒ ͒ ͑ ͐ ͏ Lonca - R : R - GemOx : Censored : Median PFS, months (95% CI): Lonca - R : 5.49 (4.76, 7.89) R - GemOx : 3.02 (2.63, 4.96) Hazard Ratio (95% CI): 0.65 (0.51, 0.81) Nominal p - value: 0.0002 Patients at risk:

ťť ċ ť „ Ř ĺ î Ū è ť ϱ [ Ėı Ė ťϙ ‹ Ū Ř ŽĖ Ž Í īϙ ( Ŝ ť Ėı Í ť ô Ŝ ® Ė ť ēϙ b Ū ı æ ô Řϙ ĺ ċϙ ‹ Ūæ Ĥ ô è ť Ŝϙ Í ťϙ ‡ ĖŜ ħ ͏ ϟ ͏ ͏ ϟ ͑ ͏ ϟ ͓ ͏ ϟ ͕ ͏ ϟ ͗ ͐ ϟ ͏ ‹ Ū Ř ŽĖ Ž Í īϙ „ Ř ĺ æ Í æ Ė ī Ė ťƅ ť ϙ Ř Ė Ŝ ħ ϙϡ [ ib ϱ ‡ ‡ ϱ @( a i³ ͑ ͐ ͏ ͖ ͗ ͒ ͗ ͐ ͘ ͘ ͒ ͏ ͑ ͐ ͏ ͓ ͒ ͑ ͐ ͕ ͐ ͐ ͏ ͏ ͑ ͔ ͏ ͔ ͏ ͏ ͖ ͔ ͏ ͐ ͏͏ ͏ ͐ ͑ ͔ ͏ ͐ ͔ ͏ ͏ Lonca - R : R - GemOx : Censored : LOTIS - 5 Topline Results 12 Lonca - R time to treatment failure (PD, death, NALT or discontinuation) longer than that of R - GemOx Time to Treatment Failure IRC = Independent Review Committee, PFS = progression free survival; Lonca - R = loncastuximab tesirine - lpyl with rituximab; R - GemOx = rituximab + gemcitabine + oxaliplatin; PD = progressive disease; NALT = new anti - lymphoma therapy ITT Population (N=420); Data cut off: February 16, 2026. Median, months: Lonca - R : 5.19 R - GemOx : 2.76 Hazard Ratio (95% CI): 0.64 (0.518, 0.786) Nominal p - value: <0.0001 Time (days) Patients at risk:

OS sensitivity analysis using IPCW method with adjustment for impact of NALT showed meaningful difference between treatment arms (HR=0.82, 95% CI: 0.72 - 0.93) LOTIS - 5 Topline Results 13 Key secondary efficacy endpoint of OS showed no detrimental effect Overall Survival Rate of NALT in test vs. control arm: 42.4% vs 57.6%; median time to NALT in test vs. control arm: 5.4 vs 3.7 months IPCW = Inverse Probability of Censoring Weighting; OS = overall survival; Lonca - R, loncastuximab tesirine - lpyl with rituximab; R - GemOx = rituximab + gemcitabine + oxaliplatin; NALT = new anti - lymphoma therapy ITT Population (N=420); Data cut off: February 16, 2026. Lonca - R : R - GemOx : Censored : Median OS, months (95% CI): Lonca - R : 12.19 (10.18, 15.05) R - GemOx : 12.16 (9.07, 15.38) Hazard Ratio (95% CI): 0.96 (0.75,1.23) Two - sided p - value: 0.7387 “ Ė ı ôϙ ϼ ı ĺ Ĳ ť ē Ŝ Ͻ [ i b ϱ ‡ ‡ ϱ @( a i³ ͏ ϟ ͏ ͏ ϟ ͐ ͏ ϟ ͑ ͏ ϟ ͒ ͏ ϟ ͓ ͏ ϟ ͔ ͏ ϟ ͕ ͏ ϟ ͖ ͏ ϟ ͗ ͏ ϟ ͘ ͐ ϟ ͏ „ Ř ĺ æ Í æ Ė ī Ė ťƅ ť ϙ Ř Ė Ŝ ħ ϙϡ ͑ ͐͏ ͑ ͐͏ ͐ ͖͘ ͐ ͖͘ ͐ ͓͗ ͐ ͓͗ ͐ ͖͏ ͐ ͖͏ ͐ ͔͔ ͐ ͔͔ ͐ ͓͑ ͐ ͓͑ ͐ ͑͘ ͐ ͑͘ ͐ ͑͑ ͐ ͑͑ ͐ ͕͐ ͐ ͕͐ ͐ ͏͕ ͐ ͏͕ ͐ ͏͐ ͐ ͏͐ ͘ ͔ ͘ ͔ ͘ ͑ ͘ ͑ ͗ ͒ ͗ ͒ ͖ ͕ ͖ ͕ ͕ ͗ ͕ ͗ ͕ ͓ ͕ ͓ ͔ ͕ ͔ ͕ ͔ ͒ ͔ ͒ ͓ ͕ ͓ ͕ ͓ ͓ ͓ ͓ ͓ ͑ ͓ ͑ ͒ ͖ ͒ ͖ ͒ ͓ ͒ ͓ ͒ ͑ ͒ ͑ ͑ ͗ ͑ ͗ ͑ ͕ ͑ ͕ ͑ ͒ ͑ ͒ ͑ ͒ ͑ ͒ ͑ ͑ ͑ ͑ ͑ ͏ ͑ ͏ ͐ ͗ ͐ ͗ ͐ ͔ ͐ ͔ ͐ ͓ ͐ ͓ ͐ ͓ ͐ ͓ ͐ ͓ ͐ ͓ ͐ ͒ ͐ ͒ ͐ ͐ ͐ ͐ ͐ ͏ ͐ ͏ ͘ ͘ ͗ ͗ ͗ ͗ ͓ ͓ ͒ ͒ ͒ ͒ ͒ ͒ ͑ ͑ ͏ ͏ ͏ ͏ ͐ ͐ ͑ ͑ ͒ ͒ ͓ ͓ ͔ ͔ ͕ ͕ ͖ ͖ ͗ ͗ ͘ ͘ ͐ ͏ ͐ ͏ ͐ ͐ ͐ ͐ ͐ ͑ ͐ ͑ ͐ ͒ ͐ ͒ ͐ ͓ ͐ ͓ ͐ ͔ ͐ ͔ ͐ ͕ ͐ ͕ ͐ ͖ ͐ ͖ ͐ ͗ ͐ ͗ ͐ ͘ ͐ ͘ ͑ ͏ ͑ ͏ ͑ ͐ ͑ ͐ ͑ ͑ ͑ ͑ ͑ ͒ ͑ ͒ ͑ ͓ ͑ ͓ ͑ ͔ ͑ ͔ ͑ ͕ ͑ ͕ ͑ ͖ ͑ ͖ ͑ ͗ ͑ ͗ ͑ ͘ ͑ ͘ ͒ ͏ ͒ ͏ ͒ ͐ ͒ ͐ ͒ ͑ ͒ ͑ ͒ ͒ ͒ ͒ ͒ ͓ ͒ ͓ ͒ ͔ ͒ ͔ ͒ ͕ ͒ ͕ ͒ ͖ ͒ ͖ ͒ ͗ ͒ ͗ ͒ ͘ ͒ ͘ ͓ ͏ ͓ ͏ ͓ ͐ ͓ ͐ ͓ ͑ ͓ ͑ ͓ ͒ ͓ ͒ ͓ ͓ ͓ ͓ ͓ ͔ ͓ ͔ ͓ ͕ ͓ ͕ ͓ ͖ ͓ ͖ ͑ ͐͏ ͑ ͐͏ ͑ ͏͗ ͑ ͏͗ ͐ ͔͘ ͐ ͔͘ ͐ ͓͗ ͐ ͓͗ ͐ ͖͏ ͐ ͖͏ ͐ ͔͗ ͐ ͔͗ ͐ ͓͕ ͐ ͓͕ ͐ ͒͗ ͐ ͒͗ ͐ ͒͑ ͐ ͒͑ ͐ ͔͑ ͐ ͔͑ ͐ ͓͐ ͐ ͓͐ ͐ ͏͔ ͐ ͏͔ ͘ ͘ ͘ ͘ ͗ ͕ ͗ ͕ ͖ ͘ ͖ ͘ ͖ ͕ ͖ ͕ ͖ ͐ ͖ ͐ ͖ ͏ ͖ ͏ ͕ ͘ ͕ ͘ ͕ ͕ ͕ ͕ ͔ ͕ ͔ ͕ ͔ ͒ ͔ ͒ ͓ ͗ ͓ ͗ ͓ ͒ ͓ ͒ ͒ ͕ ͒ ͕ ͒ ͒ ͒ ͒ ͑ ͗ ͑ ͗ ͑ ͗ ͑ ͗ ͑ ͕ ͑ ͕ ͑ ͓ ͑ ͓ ͑ ͑ ͑ ͑ ͑ ͏ ͑ ͏ ͐ ͗ ͐ ͗ ͐ ͒ ͐ ͒ ͐ ͐ ͐ ͐ ͖ ͖ ͕ ͕ ͔ ͔ ͔ ͔ ͓ ͓ ͓ ͓ ͓ ͓ ͒ ͒ ͐ ͐ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ # of Event/Censored Event/Censored Description Total 420 R - GemOx N=210 Lonca - R N=210 170 91 (43.3%) 79 (37.6%) Censored 250 119 (56.7) 131 (62.4) Deaths 420 210 210 Total Patients at risk: Patients at risk:

14 Lonca-R (N=210) R-GemOx (N=210) ORR: 58.1% (n=122) ORR: 45.2% (n=95) PR: 18.6% (n=39) CR: 39.5% (n=83) PR: 18.6% (n=39) CR: 26.7% (n=56) LOTIS - 5 Topline Results 14 Improvement in ORR and CR demonstrated with ZYNLONTA plus rituximab vs. R - GemOx Overall Response Rate by IRC Percentages may not add due to rounding. In the Lonca - R vs .R - Gemox arm: Median time to best overall response: 44 days for both arms; Median time to complete response: 49 vs. 65 days. CR = complete response; Lonca - R = loncastuximab tesirine - lpyl with rituximab; PR = partial response; R - GemOx = rituximab + gemcitabine + oxaliplatin. ITT Population (N=420); Data cut off: February 16, 2026.

LOTIS - 5 Topline Results 15 At 24 months, 48.5% of patients achieving CR remained in CR with ZYNLONTA plus rituximab vs.16.7% with R - GemOx Duration of Response/Complete Response by IRC Lonca - R = loncastuximab tesirine - lpyl with rituximab; NE = not estimable; R - GemOx = rituximab + gemcitabine + oxaliplatin. Responders only for duration of response (DOR) and complete responders only for duration of complete response (DOCR) Data cut off: February 16, 2026. Duration of Response Duration of Complete Response “ Ė ı ôϙ ϼ ı ĺ Ĳ ť ē Ŝ Ͻ [ i b ϱ ‡ ‡ ϱ @( a i³ ͏ ϟ ͏ ͏ ϟ ͐ ͏ ϟ ͑ ͏ ϟ ͒ ͏ ϟ ͓ ͏ ϟ ͔ ͏ ϟ ͕ ͏ ϟ ͖ ͏ ϟ ͗ ͏ ϟ ͘ ͐ ϟ ͏ „ Ř ĺ æ Í æ Ė ī Ė ťƅ ť ϙ Ř Ė Ŝ ħ ϙϡ ͐ ͑͑ ͘ ͔ ͐ ͑͑ ͘ ͔ ͏ ͏ ͐ ͕͐ ͘ ͏ ͐ ͕͐ ͘ ͏ ͐ ͐ ͐ ͏͗ ͖ ͑ ͐ ͏͗ ͖ ͑ ͑ ͑ ͘ ͔ ͕ ͑ ͘ ͔ ͕ ͑ ͒ ͒ ͗ ͘ ͔ ͕ ͗ ͘ ͔ ͕ ͓ ͓ ͖ ͗ ͓ ͘ ͖ ͗ ͓ ͘ ͔ ͔ ͖ ͑ ͓ ͑ ͖ ͑ ͓ ͑ ͕ ͕ ͕ ͕ ͒ ͘ ͕ ͕ ͒ ͘ ͖ ͖ ͔ ͖ ͒ ͔ ͔ ͖ ͒ ͔ ͗ ͗ ͔ ͑ ͒ ͐ ͔ ͑ ͒ ͐ ͘ ͘ ͓ ͔ ͑ ͖ ͓ ͔ ͑ ͖ ͐ ͏ ͐ ͏ ͒ ͘ ͑ ͔ ͒ ͘ ͑ ͔ ͐ ͐ ͐ ͐ ͒ ͘ ͑ ͓ ͒ ͘ ͑ ͓ ͐ ͑ ͐ ͑ ͒ ͓ ͑ ͐ ͒ ͓ ͑ ͐ ͐ ͒ ͐ ͒ ͒ ͒ ͐ ͖ ͒ ͒ ͐ ͖ ͐ ͓ ͐ ͓ ͒ ͒ ͐ ͕ ͒ ͒ ͐ ͕ ͐ ͔ ͐ ͔ ͑ ͖ ͐ ͑ ͑ ͖ ͐ ͑ ͐ ͕ ͐ ͕ ͑ ͔ ͐ ͏ ͑ ͔ ͐ ͏ ͐ ͖ ͐ ͖ ͑ ͒ ͐ ͏ ͑ ͒ ͐ ͏ ͐ ͗ ͐ ͗ ͑ ͐ ͐ ͏ ͑ ͐ ͐ ͏ ͐ ͘ ͐ ͘ ͐ ͖ ͗ ͐ ͖ ͗ ͑ ͏ ͑ ͏ ͐ ͖ ͔ ͐ ͖ ͔ ͑ ͐ ͑ ͐ ͐ ͕ ͑ ͐ ͕ ͑ ͑ ͑ ͑ ͑ ͐ ͒ ͑ ͐ ͒ ͑ ͑ ͒ ͑ ͒ ͐ ͑ ͑ ͐ ͑ ͑ ͑ ͓ ͑ ͓ ͐ ͏ ͏ ͐ ͏ ͏ ͑ ͔ ͑ ͔ ͐ ͏ ͏ ͐ ͏ ͏ ͑ ͕ ͑ ͕ ͐ ͏ ͏ ͐ ͏ ͏ ͑ ͖ ͑ ͖ ͗ ͏ ͗ ͏ ͑ ͗ ͑ ͗ ͕ ͏ ͕ ͏ ͑ ͘ ͑ ͘ ͓ ͏ ͓ ͏ ͒ ͏ ͒ ͏ ͓ ͏ ͓ ͏ ͒ ͐ ͒ ͐ ͓ ͏ ͓ ͏ ͒ ͑ ͒ ͑ ͓ ͏ ͓ ͏ ͒ ͒ ͒ ͒ ͒ ͏ ͒ ͏ ͒ ͓ ͒ ͓ ͒ ͏ ͒ ͏ ͒ ͔ ͒ ͔ ͒ ͏ ͒ ͏ ͒ ͕ ͒ ͕ ͒ ͏ ͒ ͏ ͒ ͖ ͒ ͖ ͒ ͏ ͒ ͏ ͒ ͗ ͒ ͗ ͑ ͏ ͑ ͏ ͒ ͘ ͒ ͘ ͏ ͏ ͏ ͏ ͓ ͏ ͓ ͏ “ Ė ı ôϙ ϼ ı ĺ Ĳ ť ē Ŝ Ͻ [ i b ϱ ‡ ‡ ϱ @( a i³ ͏ ϟ ͏ ͏ ϟ ͐ ͏ ϟ ͑ ͏ ϟ ͒ ͏ ϟ ͓ ͏ ϟ ͔ ͏ ϟ ͕ ͏ ϟ ͖ ͏ ϟ ͗ ͏ ϟ ͘ ͐ ϟ ͏ „ Ř ĺ æ Í æ Ė ī Ė ťƅ ť ϙ Ř Ė Ŝ ħ ϙϡ ͗ ͒ ͗ ͒ ͔ ͕ ͔ ͕ ͏ ͏ ͖ ͘ ͖ ͘ ͔ ͓ ͔ ͓ ͐ ͐ ͖ ͖ ͖ ͖ ͓ ͘ ͓ ͘ ͑ ͑ ͖ ͑ ͖ ͑ ͓ ͐ ͓ ͐ ͒ ͒ ͖ ͏ ͖ ͏ ͒ ͘ ͒ ͘ ͓ ͓ ͕ ͓ ͕ ͓ ͒ ͔ ͒ ͔ ͔ ͔ ͕ ͐ ͕ ͐ ͒ ͏ ͒ ͏ ͕ ͕ ͔ ͖ ͔ ͖ ͑ ͘ ͑ ͘ ͖ ͖ ͔ ͐ ͔ ͐ ͑ ͕ ͑ ͕ ͗ ͗ ͓ ͖ ͓ ͖ ͑ ͒ ͑ ͒ ͘ ͘ ͓ ͐ ͓ ͐ ͑ ͒ ͑ ͒ ͐ ͏ ͐ ͏ ͒ ͗ ͒ ͗ ͑ ͐ ͑ ͐ ͐ ͐ ͐ ͐ ͒ ͕ ͒ ͕ ͑ ͏ ͑ ͏ ͐ ͑ ͐ ͑ ͒ ͑ ͒ ͑ ͐ ͕ ͐ ͕ ͐ ͒ ͐ ͒ ͒ ͐ ͒ ͐ ͐ ͒ ͐ ͒ ͐ ͓ ͐ ͓ ͒ ͏ ͒ ͏ ͐ ͒ ͐ ͒ ͐ ͔ ͐ ͔ ͑ ͒ ͑ ͒ ͐ ͐ ͐ ͐ ͐ ͕ ͐ ͕ ͑ ͐ ͑ ͐ ͘ ͘ ͐ ͖ ͐ ͖ ͑ ͐ ͑ ͐ ͗ ͗ ͐ ͗ ͐ ͗ ͐ ͗ ͐ ͗ ͕ ͕ ͐ ͘ ͐ ͘ ͐ ͕ ͐ ͕ ͓ ͓ ͑ ͏ ͑ ͏ ͐ ͔ ͐ ͔ ͑ ͑ ͑ ͐ ͑ ͐ ͐ ͓ ͐ ͓ ͐ ͐ ͑ ͑ ͑ ͑ ͐ ͑ ͐ ͑ ͏ ͏ ͑ ͒ ͑ ͒ ͐ ͐ ͐ ͐ ͏ ͏ ͑ ͓ ͑ ͓ ͘ ͘ ͏ ͏ ͑ ͔ ͑ ͔ ͘ ͘ ͏ ͏ ͑ ͕ ͑ ͕ ͘ ͘ ͏ ͏ ͑ ͖ ͑ ͖ ͗ ͗ ͏ ͏ ͑ ͗ ͑ ͗ ͓ ͓ ͏ ͏ ͑ ͘ ͑ ͘ ͓ ͓ ͏ ͏ ͒ ͏ ͒ ͏ ͓ ͓ ͏ ͏ ͒ ͐ ͒ ͐ ͒ ͒ ͏ ͏ ͒ ͑ ͒ ͑ ͒ ͒ ͏ ͏ ͒ ͒ ͒ ͒ ͒ ͒ ͏ ͏ ͒ ͓ ͒ ͓ ͒ ͒ ͏ ͏ ͒ ͔ ͒ ͔ ͒ ͒ ͏ ͏ ͒ ͕ ͒ ͕ ͒ ͒ ͏ ͏ ͒ ͖ ͒ ͖ ͒ ͒ ͏ ͏ ͒ ͗ ͒ ͗ ͑ ͑ ͏ ͏ ͒ ͘ ͒ ͘ ͏ ͏ ͏ ͏ ͓ ͏ ͓ ͏ Median DOR, months (95% CI) Lonca - R : 9.20 (7.23, 12.78) R - GemOx : 7.66 (5.68, 10.38) Hazard Ratio (95% CI): 0.71 (0.50, 1.02) Median DoCR , months (95% CI) Lonca - R : 16.82 (9.46, NE) R - GemOx : 12.25 (7.66, 16.49) Hazard Ratio (95% CI): 0.57 (0.35, 0.94) Lonca - R : R - GemOx : Censored : Lonca - R : R - GemOx : Censored : Patients at risk: Patients at risk:

LOTIS - 5 Topline Results 16 Summary of key results LOTIS - 5: Safety SAE = serious adverse event; TEAE = treatment emergent adverse event Data cut off: February 16, 2026. Overall TEAE rates similar between arms Similar rates of overall Grade ≥3 TEAEs >5% were observed across both arms – Hematologic TEAEs were higher in the control arm – Infection, hepatoxicity and edema/effusion were higher in the test arm SAEs, TEAEs leading to study drug withdrawal and Grade 5 events were higher in the test arm – Majority of Grade 5 TEAEs in test arm occurred in patients aged 75 years or older Rates of TEAEs impacted by longer overall TEAE observation time in test vs control arm – Difference primarily driven by higher rate of and earlier switching to subsequent therapies in control arm

LOTIS - 5 Topline Results 17 Overall Summary of Treatment Emergent Adverse Events TEAE reporting window defined as 105 days after last dose of study treatment or start of NALT, whichever is earlier. Median TEA E follow - up time: 3.9 months on LONCA - R and 2.5 months on R - GEMOX TEAE = treatment emergent adverse events; Lonca - R = loncastuximab tesirine - lpyl with rituximab; R - GemOx = rituximab + gemcitabine + oxaliplatin; NALT = new anti - lymphoma therapy; Treated population (patients who received at least one dose of any study drug), N=401; Data cut off: February 16, 2026. R - GEMOX (N=197) n (%) LONCA - R (N=204) n (%) 192 (97.5%) 201 (98.5%) Patients with any TEAE 150 (76.1%) 151 (74.0%) Patients with any grade 3 or higher TEAE 178 (90.4%) 175 (85.8%) Patients with any TEAE related to any study drug 131 (66.5%) 132 (64.7%) Patients with any TEAE leading to any study drug dose delay or reduction 18 (9.1%) 52 (25.5%) Patients with any TEAE leading to any study drug withdrawal 68 (34.5%) 100 (49.0%) Patients with any serious TEAE 44 (22.3%) 61 (29.9%) Patients with any drug - related serious TEAE 9 (4.6%) 27 (13.2%) Patients with any Grade 5 TEAE 2 (1.0%) 6 (2.9%) Patients with any drug - related Grade 5 TEAE

R - GemOx (N=197), n (%) Lonca - R (N=204), n (%) Grouped Term / Preferred Term 150 (76.1%) 151 (74.0%) Patients with any grade 3 or higher TEAE 117 (59.4 % ) 83 (40.7 % ) Blood and lymphatic system disorders (SOC) 67 (34.0%) 52 (25.5%) Neutropenia 65 (33.0%) 25 (12.3%) Thrombocytopenia 32 (16.2%) 23 (11.3%) Anaemia 21 (10.7%) 20 (9.8%) Leukopenia 15 (7.6%) 20 (9.8%) Lymphopenia 31 (15.7 % ) 50 (24.5 % ) Infections and infestations (SOC) 11 (5.6%) 26 (12.7%) Pneumonia 16 (8.1 % ) 35 (17.2 % ) Hepatotoxicity (AESI) 9 (4.6%) 28 (13.7%) Gamma - glutamyltransferase increased 1 (0.5 % ) 15 (7.4 % ) Oedema / Effusion (AESI ) 0 11 (5.4 % ) Pleural effusion LOTIS - 5 Topline Results 18 Grade 3 or Higher Treatment Emergent Adverse Events >5% Group Term is based on either SOC or AESI category TEAE reporting window defined as 105 days or upon switching therapy, TEAE = treatment emergent adverse events; SOC = system o rga n class; AESI = adverse event of special interest; Lonca - R = loncastuximab tesirine - lpyl with rituximab; R - GemOx = rituximab + gemcitabine + oxaliplatin; Treated population, N=401; Data cut off: February 16, 2026.

LOTIS - 5 Topline Results 19 Rates of TEAEs impacted by longer overall TEAE observation time in test vs control arm Time from First Dose to Key Safety Events* *Key safety events defined as any Grade ≥3 TEAE; serious TEAE, or TEAE leading to study drug withdrawal; If TEAE occurred, ce nso r at the last dose +105 days, or start of NALT or death due to other reasons than TEAE, whichever is earlier. TEAE = treatment emergent adverse event; NALT = new anti - lymphoma therapy; Lonca - R = loncastuximab tesirine - lpyl with rituximab; R - GemOx = rituximab + gemcitabine + oxaliplatin; Treated population, N=401; Data cut off: February 16, 2026. Longer time from first dose to key safety events, reflecting more event - free time in favor of test arm Longer overall TEAE observation time leading to more reported events in test arm Ĳ Í ī ƅ ŜĖ Ŝϙ ‹ ť Í Ř ťϙ ‡ ô ī Í ť Ė Ž ôϙ " Í ƅ ͏ ϟ ͏ ͏ ϟ ͑ ͏ ϟ ͓ ͏ ϟ ͕ ͏ ϟ ͗ ͐ ϟ ͏ ‹ Ū Ř ŽĖ Ž Í īϙ „ Ř ĺ æ Í æ Ė ī Ė ťƅ ť ϙ Ř Ė Ŝ ħ ϙϡ [ ib ϱ ‡ ‡ ϱ @( a i³ ͑ ͏ ͓ ͕ ͖ ͑ ͖ ͐ ͐ ͘ ͖ ͒ ͗ ͐ ͐ ͏ ͏ ͐ ͏ ͏ ͑ ͏ ͏ ͒ ͏ ͏ „ Ř ĺ î Ū è ť ϱ [ Ėı Ė ťϙ ‹ Ū Ř ŽĖ Ž Í īϙ ( Ŝ ť Ėı Í ť ô Ŝ ® Ė ť ēϙ b Ū ı æ ô Řϙ ĺ ċϙ ‹ Ūæ Ĥ ô è ť Ŝϙ Í ťϙ ‡ ĖŜ ħ Lonca - R : R - GemOx : Censored : Median, months: Lonca - R : 2.10 R - GemOx : 0.92 Hazard Ratio (95% CI): 0.662 (0.528, 0.831) Nominal p - value: 0.0003 Time (days) Patients at risk:

LOTIS - 5 Topline Results 20 Cause of Grade 5 Treatment Emergent Adverse Events a: One patient with bacterial inguinal infection and one patient gastrointestinal infection; b: two patients with general det eri oration due to disease progression; c: one patient died in sleep in setting of progressive disease and one patient had previous cardiac history and diabetes; TEAE repor tin g window defined as 105 days after the last dose of study treatment or start of NALT , whichever is earlier SOC = system organ class; TEAE = treatment emergent adverse event; NALT = new anti - lymphoma therapy. Treated population, N=401; Data cut off: February 16, 2026. R - GemOx (N=9) Lonca - R (N=27) SOC Term/ Preferred Term 5 15 Infections and Infestations 1 9 Pneumonia 4 3 Sepsis 0 1 COVID - 19 0 2 Other Infection a 2 4 Cardiac Disorders 1 2 Cardiac failure 0 1 Cardio - respiratory arrest 1 1 Myocardial infarction 1 4 General Disorders 0 2 General physical health deterioration b 0 2 Sudden Cardiac Arrest c 1 0 Unknown 0 1 Injury, Poisoning and Procedural Complications: Uterine Perforation 1 1 Nervous System Disorders 0 1 Cerebrovascular accident 1 0 Cerebral haemorrhage 0 1 Renal and Urinary Disorders: AKI 0 1 Respiratory, Thoracic and Mediastinal Disorders: Respiratory Failure Note: Median age for patients with Grade 5 TEAEs 76 vs. 74 in test vs. control arm R - GEMOX N=9 LONCA - R N=27 36.7% 40.2% % of all treated patients ≥75 years of age 22% (2/9) 59% (16/27) % of all Grade 5 TEAEs in patients ≥75 years of age 2 cycles (1 - 8) 4 cycles (1 - 7) Median treatment exposure for Grade 5 TEAEs

LOTIS - 5 Topline Results 21 Upcoming Potential Milestones → Pre - sBLA meeting (Aug) → sBLA filing (Q4 2026) → Data presentation (Q4 26) → Compendia inclusion (1H27) → Confirmatory approval (2H 27) ZYNLONTA LOTIS - 5 → Data presentation (Q4 26) → Compendia inclusion (1H 27) → Assess regulatory strategy ZYNLONTA LOTIS - 7 → Data presentation (Q4 26) → Compendia inclusion (1H 27) → Assess regulatory strategy Marginal Zone Lymphoma (MZL) → Data presentation (Q2 27) → Compendia update (2H 27) → Assess regulatory strategy Follicular Lymphoma (FL)

Our sincere thanks … to the patients, caregivers, investigators and clinical trial sites for their participation in LOTIS - 5 and to the ADC Therapeutics team who contributed to this important trial.

Appendix

LOTIS - 5 Topline Results 24 Drug Exposure (Safety Population N=401) *Dose intensity is defined by total dose divided by treatment duration. Relative dose intensity is defined as actual dose int ens ity divided by planned dose intensity, reflecting the extent of dose reduction and dose delay during treatment. Treated population, N=401; Data cut off: February 16, 2026. R - GemOx (N=197) Lonca - R (N=204) Characteristic Number of Cycles 5 5 Median (1,8) (1,8) Range Duration of Treatment (Days) 77 107 Median (9, 233) (7, 492) Range 92% for rituximab 89% for gemcitabine 87% for oxaliplatin 96% for ZYNLONTA only Relative Dose Intensity*

LOTIS - 5 Topline Results 25 Forest Plot of Progression Free Survival by IRC Lonca - R = loncastuximab tesirine - lpyl with rituximab; R - GemOx = rituximab + gemcitabine + oxaliplatin. ITT population, N=420; IRC = independent review committee Data cut off: February 16, 2026. 25 In favor of Lonca - R In favor of R - GemOx

LOTIS - 5 Topline Results 26 Prespecified Analysis: Progression Free Survival by IRC by Age Lonca - R = loncastuximab tesirine - lpyl with rituximab; R - GemOx = rituximab + gemcitabine + oxaliplatin. Treated population, N=401; Data cut off: February 16, 2026 ≥ 75 years old ͏ ͏ ͐ ͐ ͑ ͑ ͒ ͒ ͓ ͓ ͔ ͔ ͕ ͕ ͖ ͖ ͗ ͗ ͘ ͘ ͐ ͏ ͐ ͏ ͐ ͐ ͐ ͐ ͐ ͑ ͐ ͑ ͐ ͒ ͐ ͒ ͐ ͓ ͐ ͓ ͐ ͔ ͐ ͔ ͐ ͕ ͐ ͕ ͐ ͖ ͐ ͖ ͐ ͗ ͐ ͗ ͐ ͘ ͐ ͘ ͑ ͏ ͑ ͏ ͑ ͐ ͑ ͐ ͑ ͑ ͑ ͑ ͑ ͒ ͑ ͒ ͑ ͓ ͑ ͓ ͑ ͔ ͑ ͔ ͑ ͕ ͑ ͕ ͑ ͖ ͑ ͖ ͑ ͗ ͑ ͗ ͑ ͘ ͑ ͘ ͒ ͏ ͒ ͏ ͒ ͐ ͒ ͐ ͒ ͑ ͒ ͑ ͒ ͒ ͒ ͒ ͒ ͓ ͒ ͓ ͒ ͔ ͒ ͔ ͒ ͕ ͒ ͕ ͒ ͖ ͒ ͖ ͒ ͗ ͒ ͗ ͒ ͘ ͒ ͘ ͓ ͏ ͓ ͏ ͓ ͐ ͓ ͐ ͓ ͑ ͓ ͑ “ Ė ı ôϙ ϼ ı ĺ Ĳ ť ē Ŝ Ͻ ͏ ϟ ͏ ͏ ϟ ͐ ͏ ϟ ͑ ͏ ϟ ͒ ͏ ϟ ͓ ͏ ϟ ͔ ͏ ϟ ͕ ͏ ϟ ͖ ͏ ϟ ͗ ͏ ϟ ͘ ͐ ϟ ͏ „ Ř ĺ æ Í æ Ė ī Ė ťƅ ť ϙ Ř Ė Ŝ ħ ϙϡ [ ib ϱ ‡ ͐ ͒ ͐ ͐ ͒ ͐ ͐ ͐ ͒ ͐ ͐ ͒ ͕ ͖ ͕ ͖ ͔ ͒ ͔ ͒ ͓ ͗ ͓ ͗ ͓ ͓ ͓ ͓ ͒ ͔ ͒ ͔ ͒ ͏ ͒ ͏ ͑ ͔ ͑ ͔ ͑ ͔ ͑ ͔ ͑ ͑ ͑ ͑ ͑ ͏ ͑ ͏ ͐ ͗ ͐ ͗ ͐ ͔ ͐ ͔ ͐ ͓ ͐ ͓ ͐ ͓ ͐ ͓ ͐ ͒ ͐ ͒ ͘ ͘ ͗ ͗ ͖ ͖ ͖ ͖ ͕ ͕ ͕ ͕ ͑ ͑ ͐ ͐ ͐ ͐ ͐ ͐ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ‡ ϱ @( a i³ ͐ ͑ ͒ ͐ ͑ ͒ ͐ ͐ ͑ ͐ ͐ ͑ ͗ ͓ ͗ ͓ ͗ ͐ ͗ ͐ ͖ ͒ ͖ ͒ ͕ ͕ ͕ ͕ ͔ ͕ ͔ ͕ ͔ ͔ ͔ ͔ ͔ ͑ ͔ ͑ ͓ ͑ ͓ ͑ ͒ ͘ ͒ ͘ ͒ ͓ ͒ ͓ ͒ ͒ ͒ ͒ ͑ ͘ ͑ ͘ ͑ ͖ ͑ ͖ ͑ ͔ ͑ ͔ ͑ ͔ ͑ ͔ ͑ ͑ ͑ ͑ ͑ ͏ ͑ ͏ ͐ ͖ ͐ ͖ ͐ ͕ ͐ ͕ ͐ ͕ ͐ ͕ ͐ ͔ ͐ ͔ ͐ ͒ ͐ ͒ ͐ ͐ ͐ ͐ ͗ ͗ ͖ ͖ ͖ ͖ ͖ ͖ ͕ ͕ ͔ ͔ ͓ ͓ ͓ ͓ ͓ ͓ ͓ ͓ ͒ ͒ ͒ ͒ ͒ ͒ ͒ ͒ ͒ ͒ ͑ ͑ ͐ ͐ ͏ ͏ Median PFS, months (95% CI): Lonca - R : 8.28 (5.13, 10.18) R - GemOx : 3.15 (2.53, 5.59) Hazard Ratio (95% CI) : 0.55 (0.41, 0.76) Lonca - R : R - GemOx : Censored : < 75 years old “ Ė ı ôϙ ϼ ı ĺ Ĳ ť ē Ŝ Ͻ ͏ ϟ ͏ ͏ ϟ ͐ ͏ ϟ ͑ ͏ ϟ ͒ ͏ ϟ ͓ ͏ ϟ ͔ ͏ ϟ ͕ ͏ ϟ ͖ ͏ ϟ ͗ ͏ ϟ ͘ ͐ ϟ ͏ „ Ř ĺ æ Í æ Ė ī Ė ťƅ ť ϙ Ř Ė Ŝ ħ ϙϡ [ ib ϱ ‡ ‡ ϱ @( a i³ ͗ ͖ ͗ ͖ ͖ ͔ ͖ ͔ ͔ ͕ ͔ ͕ ͔ ͏ ͔ ͏ ͓ ͓ ͓ ͓ ͒ ͘ ͒ ͘ ͒ ͐ ͒ ͐ ͑ ͕ ͑ ͕ ͑ ͒ ͑ ͒ ͑ ͏ ͑ ͏ ͐ ͔ ͐ ͔ ͐ ͒ ͐ ͒ ͐ ͐ ͐ ͐ ͐ ͏ ͐ ͏ ͐ ͏ ͐ ͏ ͘ ͘ ͗ ͗ ͖ ͖ ͖ ͖ ͖ ͖ ͔ ͔ ͔ ͔ ͓ ͓ ͓ ͓ ͓ ͓ ͓ ͓ ͒ ͒ ͒ ͒ ͒ ͒ ͒ ͒ ͑ ͑ ͐ ͐ ͏ ͏ ͖ ͘ ͖ ͘ ͕ ͗ ͕ ͗ ͓ ͔ ͓ ͔ ͒ ͕ ͒ ͕ ͒ ͑ ͒ ͑ ͑ ͖ ͑ ͖ ͑ ͐ ͑ ͐ ͑ ͏ ͑ ͏ ͐ ͗ ͐ ͗ ͐ ͕ ͐ ͕ ͐ ͓ ͐ ͓ ͐ ͓ ͐ ͓ ͐ ͑ ͐ ͑ ͐ ͐ ͐ ͐ ͐ ͐ ͐ ͐ ͗ ͗ ͕ ͕ ͔ ͔ ͓ ͓ ͓ ͓ ͓ ͓ ͓ ͓ ͒ ͒ ͑ ͑ ͐ ͐ ͐ ͐ ͐ ͐ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͐ ͐ ͑ ͑ ͒ ͒ ͓ ͓ ͔ ͔ ͕ ͕ ͖ ͖ ͗ ͗ ͘ ͘ ͐ ͏ ͐ ͏ ͐ ͐ ͐ ͐ ͐ ͑ ͐ ͑ ͐ ͒ ͐ ͒ ͐ ͓ ͐ ͓ ͐ ͔ ͐ ͔ ͐ ͕ ͐ ͕ ͐ ͖ ͐ ͖ ͐ ͗ ͐ ͗ ͐ ͘ ͐ ͘ ͑ ͏ ͑ ͏ ͑ ͐ ͑ ͐ ͑ ͑ ͑ ͑ ͑ ͒ ͑ ͒ ͑ ͓ ͑ ͓ ͑ ͔ ͑ ͔ ͑ ͕ ͑ ͕ ͑ ͖ ͑ ͖ ͑ ͗ ͑ ͗ ͑ ͘ ͑ ͘ ͒ ͏ ͒ ͏ ͒ ͐ ͒ ͐ ͒ ͑ ͒ ͑ Median PFS, months (95% CI): Lonca - R : 5.22 (3.81, 6.60) R - GemOx : 5.13 (3.98, 7.85) Hazard Ratio (95% CI) : 1.07 (0.72, 1.57) Patients at risk: Patients at risk:

LOTIS - 5 Topline Results 27 Prespecified Analysis: Overall Survival by Age Lonca - R = loncastuximab tesirine - lpyl with rituximab; R - GemOx = rituximab + gemcitabine + oxaliplatin. Treated population, N=401; Data cut off: February 16, 2026. ‡ ϱ @( a i³ ͏ ϟ ͏ ͏ ϟ ͐ ͏ ϟ ͑ ͏ ϟ ͒ ͏ ϟ ͓ ͏ ϟ ͔ ͏ ϟ ͕ ͏ ϟ ͖ ͏ ϟ ͗ ͏ ϟ ͘ ͐ ϟ ͏ „ Ř ĺ æ Í æ Ė ī Ė ťƅ ť ϙ Ř Ė Ŝ ħ ϙϡ [ i b ϱ ‡ ͐ ͒ ͐ ͐ ͒ ͐ ͐ ͑ ͑ ͐ ͑ ͑ ͐ ͐ ͔ ͐ ͐ ͔ ͐ ͏ ͗ ͐ ͏ ͗ ͘ ͕ ͘ ͕ ͗ ͗ ͗ ͗ ͗ ͐ ͗ ͐ ͖ ͓ ͖ ͓ ͕ ͘ ͕ ͘ ͕ ͑ ͕ ͑ ͔ ͘ ͔ ͘ ͔ ͔ ͔ ͔ ͔ ͒ ͔ ͒ ͓ ͖ ͓ ͖ ͓ ͒ ͓ ͒ ͒ ͗ ͒ ͗ ͒ ͔ ͒ ͔ ͒ ͐ ͒ ͐ ͑ ͗ ͑ ͗ ͑ ͑ ͑ ͑ ͑ ͑ ͑ ͑ ͑ ͏ ͑ ͏ ͐ ͗ ͐ ͗ ͐ ͕ ͐ ͕ ͐ ͕ ͐ ͕ ͐ ͒ ͐ ͒ ͐ ͐ ͐ ͐ ͐ ͏ ͐ ͏ ͐ ͏ ͐ ͏ “ Ė ı ôϙ ϼ ı ĺ Ĳ ť ē Ŝ Ͻ ͘ ͘ ͘ ͘ ͗ ͗ ͔ ͔ ͔ ͔ ͔ ͔ ͔ ͔ ͔ ͔ ͔ ͔ ͔ ͔ ͔ ͔ ͔ ͔ ͔ ͔ ͒ ͒ ͑ ͑ ͑ ͑ ͑ ͑ ͑ ͑ ͏ ͏ ͐ ͑ ͒ ͐ ͑ ͒ ͐ ͑ ͐ ͐ ͑ ͐ ͐ ͐ ͐ ͐ ͐ ͐ ͐ ͏ ͒ ͐ ͏ ͒ ͘ ͘ ͘ ͘ ͘ ͐ ͘ ͐ ͗ ͖ ͗ ͖ ͗ ͕ ͗ ͕ ͗ ͓ ͗ ͓ ͗ ͐ ͗ ͐ ͖ ͓ ͖ ͓ ͕ ͖ ͕ ͖ ͕ ͔ ͕ ͔ ͔ ͖ ͔ ͖ ͔ ͐ ͔ ͐ ͓ ͘ ͓ ͘ ͓ ͖ ͓ ͖ ͓ ͕ ͓ ͕ ͓ ͕ ͓ ͕ ͓ ͓ ͓ ͓ ͒ ͗ ͒ ͗ ͒ ͖ ͒ ͖ ͒ ͒ ͒ ͒ ͑ ͘ ͑ ͘ ͑ ͓ ͑ ͓ ͑ ͑ ͑ ͑ ͐ ͘ ͐ ͘ ͐ ͘ ͐ ͘ ͐ ͗ ͐ ͗ ͐ ͖ ͐ ͖ ͐ ͔ ͐ ͔ ͐ ͔ ͐ ͔ ͐ ͓ ͐ ͓ ͐ ͏ ͐ ͏ ͗ ͗ ͕ ͕ ͔ ͔ ͓ ͓ ͓ ͓ ͒ ͒ ͒ ͒ ͒ ͒ ͒ ͒ ͐ ͐ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͐ ͐ ͑ ͑ ͒ ͒ ͓ ͓ ͔ ͔ ͕ ͕ ͖ ͖ ͗ ͗ ͘ ͘ ͐ ͏ ͐ ͏ ͐ ͐ ͐ ͐ ͐ ͑ ͐ ͑ ͐ ͒ ͐ ͒ ͐ ͓ ͐ ͓ ͐ ͔ ͐ ͔ ͐ ͕ ͐ ͕ ͐ ͖ ͐ ͖ ͐ ͗ ͐ ͗ ͐ ͘ ͐ ͘ ͑ ͏ ͑ ͏ ͑ ͐ ͑ ͐ ͑ ͑ ͑ ͑ ͑ ͒ ͑ ͒ ͑ ͓ ͑ ͓ ͑ ͔ ͑ ͔ ͑ ͕ ͑ ͕ ͑ ͖ ͑ ͖ ͑ ͗ ͑ ͗ ͑ ͘ ͑ ͘ ͒ ͏ ͒ ͏ ͒ ͐ ͒ ͐ ͒ ͑ ͒ ͑ ͒ ͒ ͒ ͒ ͒ ͓ ͒ ͓ ͒ ͔ ͒ ͔ ͒ ͕ ͒ ͕ ͒ ͖ ͒ ͖ ͒ ͗ ͒ ͗ ͒ ͘ ͒ ͘ ͓ ͏ ͓ ͏ ͓ ͐ ͓ ͐ ͓ ͑ ͓ ͑ ͓ ͒ ͓ ͒ ͓ ͓ ͓ ͓ ͓ ͔ ͓ ͔ ͓ ͕ ͓ ͕ ͓ ͖ ͓ ͖ Lonca - R : R - GemOx : Censored : < 75 years old Median OS, months (95% CI): Lonca - R : 13.47 (10.78, 23.03) R - GemOx : 10.97 (8.21, 14.26) Hazard Ratio (95% CI) : 0.72 (0.52, 1.01) ≥ 75 years old ͏ ͏ ͐ ͐ ͑ ͑ ͒ ͒ ͓ ͓ ͔ ͔ ͕ ͕ ͖ ͖ ͗ ͗ ͘ ͘ ͐ ͏ ͐ ͏ ͐ ͐ ͐ ͐ ͐ ͑ ͐ ͑ ͐ ͒ ͐ ͒ ͐ ͓ ͐ ͓ ͐ ͔ ͐ ͔ ͐ ͕ ͐ ͕ ͐ ͖ ͐ ͖ ͐ ͗ ͐ ͗ ͐ ͘ ͐ ͘ ͑ ͏ ͑ ͏ ͑ ͐ ͑ ͐ ͑ ͑ ͑ ͑ ͑ ͒ ͑ ͒ ͑ ͓ ͑ ͓ ͑ ͔ ͑ ͔ ͑ ͕ ͑ ͕ ͑ ͖ ͑ ͖ ͑ ͘ ͑ ͘ ͒ ͒ ͏ ͏ ͒ ͐ ͒ ͐ ͒ ͑ ͒ ͑ ͒ ͒ ͒ ͒ ͒ ͓ ͒ ͓ ͒ ͔ ͒ ͔ ͒ ͕ ͒ ͕ ͒ ͖ ͒ ͖ ͒ ͗ ͒ ͗ ͒ ͘ ͒ ͘ ͓ ͏ ͓ ͏ ͓ ͐ ͓ ͐ ͓ ͑ ͓ ͑ ͓ ͒ ͓ ͒ ͓ ͓ ͓ ͓ ͓ ͔ ͓ ͔ ͓ ͕ ͓ ͕ ͑ ͗ ͏ ϟ ͏ ͏ ϟ ͐ ͏ ϟ ͑ ͏ ϟ ͒ ͏ ϟ ͓ ͏ ϟ ͔ ͏ ϟ ͕ ͏ ϟ ͖ ͏ ϟ ͗ ͏ ϟ ͘ ͐ ϟ ͏ „ Ř ĺ æ Í æ Ė ī Ė ťƅ ť ϙ Ř Ė Ŝ ħ ϙϡ [ ib ϱ ‡ ‡ ϱ @( a i³ ͗ ͖ ͗ ͖ ͗ ͖ ͗ ͖ ͗ ͓ ͗ ͓ ͗ ͐ ͗ ͐ ͖ ͐ ͖ ͐ ͕ ͖ ͕ ͖ ͔ ͘ ͔ ͘ ͔ ͑ ͔ ͑ ͓ ͗ ͓ ͗ ͓ ͓ ͓ ͓ ͓ ͏ ͓ ͏ ͒ ͗ ͒ ͗ ͒ ͓ ͒ ͓ ͑ ͘ ͑ ͘ ͑ ͗ ͑ ͗ ͑ ͖ ͑ ͖ ͑ ͓ ͑ ͓ ͑ ͓ ͑ ͓ ͑ ͒ ͑ ͒ ͑ ͑ ͑ ͑ ͐ ͗ ͐ ͗ ͐ ͕ ͐ ͕ ͐ ͔ ͐ ͔ ͐ ͓ ͐ ͓ ͐ ͑ ͐ ͑ ͐ ͐ ͐ ͐ ͘ ͘ ͘ ͘ ͗ ͗ ͖ ͖ ͖ ͖ ͔ ͔ ͓ ͓ ͒ ͒ ͒ ͒ ͐ ͐ ͐ ͐ ͐ ͐ ͐ ͐ ͐ ͐ ͐ ͐ ͐ ͐ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͖ ͘ ͖ ͘ ͖ ͔ ͖ ͔ ͕ ͘ ͕ ͘ ͕ ͑ ͕ ͑ ͔ ͘ ͔ ͘ ͔ ͓ ͔ ͓ ͓ ͗ ͓ ͗ ͓ ͗ ͓ ͗ ͓ ͖ ͓ ͖ ͓ ͓ ͓ ͓ ͓ ͑ ͓ ͑ ͓ ͏ ͓ ͏ ͒ ͘ ͒ ͘ ͒ ͕ ͒ ͕ ͒ ͒ ͒ ͒ ͒ ͏ ͒ ͏ ͑ ͘ ͑ ͘ ͑ ͔ ͑ ͔ ͑ ͔ ͑ ͔ ͑ ͓ ͑ ͓ ͑ ͑ ͑ ͑ ͑ ͑ ͑ ͑ ͐ ͘ ͐ ͘ ͐ ͗ ͐ ͗ ͐ ͕ ͐ ͕ ͐ ͔ ͐ ͔ ͐ ͔ ͐ ͔ ͐ ͒ ͐ ͒ ͐ ͒ ͐ ͒ ͐ ͒ ͐ ͒ ͐ ͐ ͐ ͐ ͐ ͏ ͐ ͏ ͐ ͏ ͐ ͏ ͘ ͘ ͘ ͘ ͘ ͘ ͗ ͗ ͕ ͕ ͔ ͔ ͓ ͓ ͒ ͒ ͒ ͒ ͐ ͐ ͐ ͐ ͐ ͐ ͐ ͐ ͏ ͏ “ Ė ı ôϙ ϼ ı ĺ Ĳ ť ē Ŝ Ͻ Median OS, months (95% CI): Lonca - R : 9.86 (7.16, 12.29) R - GemOx : 13.90 (8.97, NE) Hazard Ratio (95% CI) : 1.38 (0.93, 2.06) Patients at risk: Patients at risk:

Treatment Emergent Adverse Events Leading to Any Study Drug Withdrawal LOTIS - 5 Topline Results 28 >2% in Either Treatment Arm by Group Term or Preferred Term *Group Term is based on either System Organ Class (SOC) or AEs of Special Interest (AESI) category TEAE reporting window defined as 105 days after the last dose of study treatment or start of new anticancer therapy, whicheve r i s earlier. Treated population, N=401; Data cut off: February 16, 2026. R - GemOx (N=197) n (%) Lonca - R (N=204) n (%) Grouped Term* / Preferred Term 18 (9.1%) 52 (25.5%) Patients with TEAE leading to any study drug withdrawal 4 (2.0%) 14 (6.9%) Infections and infestations (SOC) 0 9 (4.4%) Pneumonia 2 (1.0%) 10 (4.9%) Oedema and Effusions (AESI) 2 (1.0%) 9 (4.4%) Pleural Effusions 0 4 (2.0%) Pericardial Effusions 0 7 (3.4%) Hepatoxicity (AESI) 0 4 (2.0%) Gamma - glutamyltransferase increased 5 (2.5%) 5 (2.5%) Blood and lymphatic system disorders (SOC) 3 (1.5%) 5 (2.5%) Thrombocytopenia

LOTIS - 5 Topline Results 29 >2% in Either Treatment Arm by Group Term or Preferred Term Serious Treatment Emergent Adverse Events *Group Term is based on either System Organ Class (SOC) or AEs of Special Interest (AESI) category Serious Adverse Event (SAE): An AE resulting in death, life - threatening condition, hospitalization or its prolongation, persiste nt or significant disability, congenital anomaly/birth defect, or a medically significant event that may jeopardize the patient or require intervention to prevent the se outcomes. TEAE reporting window defined as 105 days after the last dose of study treatment or start of new anticancer therapy, whicheve r i s earlier. Treated population, N=401; Data cut off: February 16, 2026. R - GemOx (N=197) n (%) Lonca - R (N=204) n (%) Group Term* / Preferred Term 68 (34.5 % ) 100 (49.0%) Patients with any serious TEAE 29 (14.7%) 48 (23.5%) Infections and infestations (SOC) 11 (5.6 % ) 26 (12.7 % ) Pneumonia 1 (0.5 % ) 7 (3.4 % ) COVID - 19 1(0.5%) 20 (9.8%) Oedema and Effusions (AESI) 1(0.5 % ) 16 (7.8 % ) Pleural Effusions 19 (9.6%) 15 (7.4%) Blood and lymphatic system disorders (SOC) 4 (2.0 % ) 5 (2.5 % ) Febrile neutropenia 9 (4.6 % ) 4 (2.0 % ) Thrombocytopenia