CLR-131

Phase 2 CLOVER-WaM pivotal study data selected for oral presentation at 66th Annual American Society of Hematology Meeting and Exposition Raised approximately $19.4 million with potential to raise up to an additional $73.3 million Company to hold webcast and conference call at 8:30 AM ET today FLORHAM PARK, N.J., Nov. 18, 2024 (GLOBE NEWSWIRE) -- Cellectar Biosciences, Inc. (NASDAQ: CLRB), a late-stage clinical biopharmaceutical company focused on the discovery, development, and commercialization of drugs for the treatment of cancer, today announced financial results for the quarter ended September 30, 2024, and provided a corporate update. “We achieved important clinical, operational and commercial corporate objectives during the quarter. We reported topline results from the CLOVER-WaM pivotal study in WM and look forward to filing our NDA submission with a request for accelerated regulatory approval in the coming months,” said James Caruso, president and CEO of Cellectar Biosciences. “In addition to our lead iopofosine I 131 program, we plan to further advance the value of our phospholipid radioconjugate pipeline and are preparing alpha and Auger PRCs for initiation of solid tumor clinical studies as business conditions allow.” Third Quarter and Recent Corporate Highlights Reported positive results from the Phase 2 CLOVER-WaM pivotal study evaluating iopofosine I 131, the company’s potentially first-in-class, targeted radiotherapeutic candidate, for the treatment of relapsed/refractory Waldenstrom’s macroglobulinemia (WM). These results support the company’s planned filing of the New Drug Application (NDA) to the U.S. Food and Drug Administration (FDA) in the near term.Selected to present data from the CLOVER-WaM study evaluating iopofosine I 131 in patients with WM at the upcoming 66th Annual American Society of Hematology Meeting and Exposition (ASH), in an oral presentation session. Details of the oral presentation are as follows: Abstract Title: Iopofosine I 131 in Previously Treated Patients with Waldenström Macroglobulinemia (WM): Efficacy and Safety Results from the International, Multicenter, Open-Label Phase 2 Study (CLOVER-WaM™)Session Name: 623. Mantle Cell, Follicular, Waldenstrom’s, and Other Indolent B Cell Lymphomas: Clinical and Epidemiological: Clinical Trials for Marginal Zone Lymphoma, Waldenstrom's Macroglobulinemia and Hairy Cell LeukemiaSession Date: Monday, December 9, 2024Presentation Time: 3:15 PM PST Delivered oral and poster presentations at the 12th International Workshop on Waldenstrom’s Macroglobulinemia (IWWM) in October 2024 that highlighted the activity of iopofosine I 131 in WM. Oral presentation: Session XXII Clinical Trials in Progress for WM: Multi-center trial of iopofosine I-131 in relapsed/refractory WMPoster presentation: Treatment With iopofosine I 131 in a Patient With Bing-Neel Syndrome, A Rare Manifestation of Waldenström Macroglobulinemia: A Case Report Advanced sales, marketing and medical planning activities to support iopofosine I 131 commercializationPartnered with key national and regional community cancer networks to better understand the WM disease landscape, to advance iopofosine I 131 for WM patients in the community settingEstablished collaboration with the City of Hope Cancer Center to evaluate iopofosine I 131 in mycosis fungoides, a cutaneous T-cell lymphomaExecuted supply and manufacturing agreements, further strengthening our multi-sourced supply network: Commercial finished product supply of iopofosine I 131 with SpectronRxPre-clinical and clinical supply of alpha-emitting actinium 225 isotope with Northstar Medical Radioisotopes Raised $19.4 million through warrant exercises and issued new milestone-based warrants with the potential to raise up to an additional $73.3 million. Funds generated from the execution of these new warrants will further advance the company’s commercialization plans for iopofosine I 131 in the treatment of WM and support future clinical development. Third Quarter 2024 Financial Highlights Cash and Cash Equivalents: As of September 30, 2024, the company had cash and cash equivalents of $34.3 million, including 19.4 million ($17.5 million, net) raised through investor exercises of Tranche B warrants and the purchase of new warrants in July 2024, compared to $9.6 million as of December 31, 2023. The company believes its cash balance as of September 30, 2024, is adequate to fund its basic budgeted operations into the second quarter of 2025.Research and Development Expenses: R&D expenses for the three months ended September 30, 2024, were approximately $5.5 million, compared to approximately $7.0 million for the three months ended September 30, 2023. The overall decrease was primarily a result of the conclusion of patient enrollment in our WM pivotal study having occurred earlier in the year, partially offset by increased activity in our ongoing pediatric trial and an increase in personnel.General and Administrative Expenses: G&A expenses for the three months ended September 30, 2024, were approximately $7.8 million, compared to approximately $2.4 million for the same period in 2023. The increase was primarily driven by costs associated with the development of infrastructure necessary to support commercialization upon anticipated NDA approval, including the related marketing and personnel cost. Conference Call & Webcast DetailsCellectar management will host a conference call and webcast today, November 18, 2024, at 8:30 AM Eastern Time to discuss these results and answer questions. Stockholders and other interested parties may participate in the conference call by dialing 1-800-717-1738. A live webcast of the conference call can be accessed in the “Events & Presentations” section of Cellectar’s website at www.cellectar.com. A recording of the webcast will be available and archived on the Company’s website for approximately 90 days. About Cellectar Biosciences, Inc.Cellectar Biosciences is a late-stage clinical biopharmaceutical company focused on the discovery, development, and commercialization of proprietary drugs for the treatment of cancer, independently and through research and development collaborations. The company’s core objective is to leverage its proprietary Phospholipid Drug Conjugate™ (PDC™) delivery platform to develop the next-generation of cancer cell-targeting treatments, delivering improved efficacy and better safety as a result of fewer off-target effects. The company’s product pipeline includes lead asset iopofosine I 131, a small-molecule PDC designed to provide targeted delivery of iodine-131 (radioisotope), proprietary preclinical PDC chemotherapeutic programs and multiple partnered PDC assets. For more information, please visit www.cellectar.com or join the conversation by liking and following us on the company’s social media channels: X, LinkedIn, and Facebook. Forward Looking Statements Disclaimer This news release contains forward-looking statements. You can identify these statements by our use of words such as "may," "expect," "believe," "anticipate," "intend," "could," "estimate," "continue," "plans," or their negatives or cognates. These statements are only estimates and predictions and are subject to known and unknown risks and uncertainties that may cause actual future experience and results to differ materially from the statements made. These statements are based on our current beliefs and expectations as to such future outcomes including our expectations regarding the CLOVER-WaM pivotal trial. Drug discovery and development involve a high degree of risk. Factors that might cause such a material difference include, among others, uncertainties related to the ability to raise additional capital, uncertainties related to the disruptions at our sole source supplier of iopofosine, the ability to attract and retain partners for our technologies, the identification of lead compounds, the successful preclinical development thereof, patient enrollment and the completion of clinical studies, the FDA review process and other government regulation, our ability to maintain orphan drug designation in the United States for iopofosine, the volatile market for priority review vouchers, our pharmaceutical collaborators' ability to successfully develop and commercialize drug candidates, competition from other pharmaceutical companies, product pricing and third-party reimbursement. A complete description of risks and uncertainties related to our business is contained in our periodic reports filed with the Securities and Exchange Commission including our Form 10-K/A for the year ended December 31, 2023, and our Form 10-Q for the quarter ended September 30, 2024. These forward-looking statements are made only as of the date hereof, and we disclaim any obligation to update any such forward-looking statements. MEDIA:Claire LaCagninaBliss Bio Health315-765-1462clacagnina@blissbiohealth.com INVESTORS:Anne Marie FieldsPrecision AQ212-362-1200annemarie.fields@precisionaq.com +++ TABLES TO FOLLOW +++ CELLECTAR BIOSCIENCES, INC.CONDENSED CONSOLIDATED BALANCE SHEETS(Unaudited) September 30, December 31, 2024 2023 ASSETS CURRENT ASSETS: Cash and cash equivalents $34,263,371 $9,564,988 Prepaid expenses and other current assets 1,635,818 888,225 Total current assets 35,899,189 10,453,213 Property, plant & equipment, net 910,131 1,090,304 Operating lease right-of-use asset 454,166 502,283 Other long-term assets 29,780 29,780 TOTAL ASSETS $37,293,266 $12,075,580 LIABILITIES AND STOCKHOLDERS’ EQUITY (DEFICIT) CURRENT LIABILITIES: Accounts payable and accrued liabilities $8,304,311 $9,178,645 Warrant liability 11,929,242 16,120,898 Lease liability, current 80,821 58,979 Total current liabilities 20,314,374 25,358,522 Long-term lease liability, net of current portion 431,929 494,003 TOTAL LIABILITIES 20,746,303 25,852,525 COMMITMENTS AND CONTINGENCIES MEZZANINE EQUITY: Series D preferred stock, 111.11 shares authorized, issued and outstanding as of September 30, 2024 and December 31, 2023 1,382,023 1,382,023 STOCKHOLDERS’ EQUITY (DEFICIT): Series E-2 preferred stock, 1,225.00 shares authorized; 149.60 and 319.76 shares issued and outstanding as of September 30, 2024 and December 31, 2023, respectively 2,188,434 4,677,632 Series E-3 preferred stock, 2,205.00 shares authorized; 202.50 and 0 shares issued and outstanding as of September 30, 2024 and December 31, 2023, respectively 4,369,317 — Series E-4 preferred stock, 1,610.00 shares authorized; 714.00 and 0 shares issued and outstanding as of September 30, 2024 and December 31, 2023, respectively 7,057,793 — Common stock, $0.00001 par value; 170,000,000 shares authorized; 40,566,534 and 20,744,110 shares issued and outstanding as of September 30, 2024 and December 31, 2023, respectively 406 207 Additional paid-in capital 246,536,080 182,924,210 Accumulated deficit (244,987,090) (202,761,017)Total stockholders’ equity (deficit) 15,164,940 (15,158,968)TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY (DEFICIT) $37,293,266 $12,075,580 CELLECTAR BIOSCIENCES, INC.CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS(Unaudited) Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 OPERATING EXPENSES: Research and development $5,493,496 $7,034,656 $19,927,019 $19,528,898 General and administrative 7,834,181 2,378,804 19,105,853 6,883,866 Total operating expenses 13,327,677 9,413,460 39,032,872 26,412,764 LOSS FROM OPERATIONS (13,327,677) (9,413,460) (39,032,872) (26,412,764) OTHER INCOME (EXPENSE): Warrant issuance expense (7,743,284) (470,000) (7,743,284) (470,000)Gain (loss) on valuation of warrants 6,088,355 (7,688,028) 3,583,440 (8,254,649)Interest income 317,887 51,110 966,643 247,925 Total other income (expense) (1,337,042) (8,106,918) (3,193,201) (8,476,724)NET LOSS $(14,664,719) $(17,520,378) (42,226,073) $(34,889,488)NET LOSS PER SHARE — BASIC $(0.37) $(1.55) (1.21) $(3.09)NET LOSS PER SHARE — DILUTED $(0.40) $(1.55) (1.39) $(3.09)WEIGHTED-AVERAGE COMMON SHARES OUTSTANDING — BASIC 39,335,924 11,308,738 34,850,441 11,277,231 WEIGHTED-AVERAGE COMMON SHARES OUTSTANDING — DILUTED 39,794,220 11,308,738 35,545,500 11,277,231

Cellectar broadens global manufacturing network in preparation for potential commercialization of Iopofosine I 131 in 2025INDIANAPOLIS and FLORHAM PARK, N.J., Nov. 12, 2024 (GLOBE NEWSWIRE) -- SpectronRx, a leading radiopharmaceutical contract developer and manufacturer, and Cellectar Biosciences, Inc. (NASDAQ: CLRB), a late-stage clinical biopharmaceutical company focused on the discovery, development and commercialization of drugs for the treatment of cancer, have signed a commercial supply agreement for the manufacture of Cellectar’s first-in-class cancer therapy, iopofosine I 131. "We continue strengthening our supply network, ensuring patients with advanced cancers in need of novel therapeutic options gain access to what we believe is a best-in-class treatment for Waldenstrom's macroglobulinemia (WM). This partnership is part of our multi-sourced global supply strategy, which is key for Cellectar’s commercialization plans for iopofosine I 131," said James Caruso, president and CEO of Cellectar. "SpectronRx's expertise and strategically located facilities offer significant logistical benefits for global market distribution while expanding our manufacturing capabilities for iopofosine I 131.” SpectronRx will utilize its state-of-the-art facilities in Indiana and Belgium to produce iopofosine I 131, a promising therapeutic that has shown impressive efficacy, surpassing primary and secondary endpoints in the CLOVER-WaM pivotal study for patients with relapsed or refractory WM with a planned New Drug Application submission in the near term. Furthermore, iopofosine I 131 is under evaluation in Phase 2 studies for relapsed or refractory multiple myeloma (MM) and central nervous system (CNS) lymphoma, alongside the CLOVER-2 Phase 1b study, targeting pediatric patients with high-grade gliomas. John Zehner, CEO of SpectronRx, expressed enthusiasm about the collaboration, stating, "Our partnership with Cellectar aligns with our commitment to support innovative radiopharmaceutical developers in delivering life-changing treatments globally. By integrating our advanced manufacturing capabilities with Cellectar's groundbreaking therapies, we are poised to address the unmet needs of cancer patients worldwide." Iopofosine I-131 is still investigational and not yet approved. The FDA has granted it Orphan Drug and Fast Track Designations for various cancer indications. For more information about Cellectar, please visit Cellectar.com. To learn more about SpectronRx, visit SpectronRx.com. About SpectronRx SpectronRx is a diagnostic and therapeutic radiopharmaceutical developer and manufacturer with three distinct specialties: Radiopharmaceutical Contract Development (RCDMO), Radiopharmaceutical Contract Manufacturing (RCMO), and Isotope Production. The company performs all scales of development, from initial conjugations through scale-up and commercial distribution. It also has the capacity to run clinical trials. Additionally, SpectronRx's deep industry knowledge, technical prowess and state-of-the-art facilities enable the company to significantly condense the timeline for bringing new medicines to market, which has the dual benefit of saving lives and driving greater profitability for clients. With a large staff of radiochemists, radiopharmacists, scientists and engineers, dozens of qualified clean rooms, and over 200,000 sq. ft. of production space in Indiana, with additional facilities in Danbury, Connecticut and Europe, SpectronRx now supplies therapeutic and diagnostic radiopharmaceuticals to 29 countries. The company has been EMA and FDA inspected and can produce and procure any currently used radioisotopes, including actinium-225. For more information visit SpectronRx.com, or follow the company on LinkedIn. About Cellectar Biosciences, Inc. Cellectar Biosciences is a late-stage clinical biopharmaceutical company focused on the discovery, development and commercialization of novel drugs for the treatment of cancer, independently and through research and development collaborations. The company’s core objective is to leverage its proprietary Phospholipid Drug ConjugateTM (PDCTM) delivery platform to develop the next-generation of cancer cell-targeting treatments, delivering improved efficacy and better safety as a result of fewer off-target effects. The company’s product pipeline includes lead asset iopofosine I 131, a small-molecule PDC designed to provide targeted delivery of iodine-131 (radioisotope), proprietary preclinical PDC chemotherapeutic programs and multiple partnered PDC assets. For more information, please visit www.cellectar.com or join the conversation by liking and following us on the company’s social media channels: Twitter, LinkedIn, and Facebook. Forward-Looking Statement Disclaimer This news release contains forward-looking statements. You can identify these statements by our use of words such as "may," "expect," "believe," "anticipate," "intend," "could," "estimate," "continue," "plans," or their negatives or cognates. These statements are only estimates and predictions and are subject to known and unknown risks and uncertainties that may cause actual future experience and results to differ materially from the statements made. These statements are based on our current beliefs and expectations as to such future outcomes including our expectations regarding the CLOVER WaM pivotal trial. Drug discovery and development involve a high degree of risk. Factors that might cause such a material difference include, among others, uncertainties related to the ability to raise additional capital, uncertainties related to the disruptions at our sole source supplier of iopofosine, the ability to attract and retain partners for our technologies, the identification of lead compounds, the successful preclinical development thereof, patient enrollment and the completion of clinical studies, the FDA review process and other government regulation, our ability to maintain orphan drug designation in the United States for iopofosine, the volatile market for priority review vouchers, our pharmaceutical collaborators' ability to successfully develop and commercialize drug candidates, competition from other pharmaceutical companies, product pricing and third-party reimbursement. A complete description of risks and uncertainties related to our business is contained in our periodic reports filed with the Securities and Exchange Commission including our Form 10-K/A for the year ended December 31, 2023, and our Form 10-Q for the quarter ended June 30, 2024. These forward-looking statements are made only as of the date hereof, and we disclaim any obligation to update any such forward-looking statements. Contacts MEDIA: Christy MaginnBliss Bio Health 703-297-7194 cmaginn@blissbiohealth.com INVESTORS:Anne Marie FieldsPrecision AQ (formerly Stern IR)annemarie.fields@precisionaq.com