AbCellera Reports Q1 2026 Business Results & Announces Positive Interim Phase 1 Clinical Data for ABCL635

About this update from Abcellera Biologics Inc.

VANCOUVER, British Columbia, May 11, 2026 --( BUSINESS WIRE )-- AbCellera (Nasdaq: ABCL) today announced financial results for the first quarter of 2026 and positive interim results from the Phase 1 portion of its ongoing Phase 1/2 clinical trial of ABCL635. ABCL635 is a potential first-in-class antibody targeting the neurokinin 3 receptor (NK3R) for the treatment of moderate-to-severe vasomotor symptoms (VMS) associated with menopause. All financial information in this press release is reported in U.S. dollars, unless otherwise indicated. "We are excited to share interim Phase 1 data that show ABCL635 achieved robust NK3R target engagement at doses that were well-tolerated in healthy volunteers and a pharmacokinetic profile that may support a once monthly dosing regimen. We look forward to the efficacy readout from the Phase 2 data in Q3, which we believe will be highly de-risking for the program," said Carl Hansen, Ph.D., founder and CEO of AbCellera. "Through 2026 we are focused on delivering data readouts for our clinical programs, advancing ABCL688 and ABCL386 into IND-enabling studies, and selecting at least one additional development candidate. We continue to maintain our strong cash position, ending the quarter with approximately $655 million dollars in available liquidity to execute on our strategy." Q1 2026 Business Summary and Program Updates Clinical Update: ABCL635 Interim Phase 1 Data Study Design The Phase 1 trial of ABCL635 (NCT07118891) is a randomized, double-blind, placebo-controlled study designed to evaluate single and multiple doses of ABCL635 in healthy volunteers. A total of 40 healthy men and postmenopausal women were enrolled in the single ascending dose (SAD) part and treated with single doses ranging from 30 mg to 900 mg. The multiple ascending dose (MAD) part enrolled a total of 16 postmenopausal women who received multiple once monthly doses ranging from 300 mg to 600 mg. Study Results The interim Phase 1 data supported advancing ABCL635 into Phase 2. Data from the MAD part remain blinded, with safety follow-up visits ongoing. The unblinded interim data from the SAD part demonstrated the following: Based on these data, AbCellera advanced ABCL635 into a Phase 2 study, as announced earlier this year. The Phase 2 is a multicenter, randomized, double-blind, placebo-controlled trial with approximately 80 postmenopausal women designed to evaluate the efficacy of ABCL635 in reducing the frequency and severity of moderate-to-severe VMS. Business Metrics Beginning in Q1 2026, AbCellera is reporting new business metrics to focus on programs and molecules with downstream participation which are believed to be progressing. At the end of Q1 2026, partners led 40 programs which AbCellera believes to be progressing and where AbCellera holds a downstream stake (down from 44 on December 31, 2025). In total, AbCellera held downstream stakes in 14 molecules in the clinic understood to be progressing on March 31, 2026. Discussion of Q1 2026 Financial Results Conference Call and Webcast AbCellera will host a conference call and live webcast to discuss these results today at 2:00 p.m. Pacific Time (5:00 p.m. Eastern Time). The live webcast of the earnings conference call can be accessed on the Events and Presentations section of AbCellera’s Investor Relations website . A replay of the webcast will be available through the same link following the conference call. About ABCL635 ABCL635 is a potential first-in-class antibody drug for the non-hormonal treatment of moderate-to-severe VMS, commonly known as hot flashes, associated with menopause. ABCL635 specifically targets NK3R, a clinically validated G protein-coupled receptor (GPCR) expressed on KNDy neurons in the infundibular nucleus of the hypothalamus. ABCL635 is the first program from AbCellera’s GPCR and ion channel platform to advance into the pipeline, entering the clinic in July 2025. Additional details are available at www.abcellera.com/pipeline . About AbCellera Biologics Inc . AbCellera (Nasdaq: ABCL) is a clinical-stage biotechnology company focused on discovering and developing first-in-class antibody-based medicines in the areas of endocrinology, women’s health, immunology, oncology, and more. For more information, please visit www.abcellera.com . AbCellera Forward-Looking Statements This press release contains forward-looking statements, including statements made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. The forward-looking statements are based on management’s current beliefs and assumptions and on information currently available to management. All statements contained in this release other than statements of historical fact are forward-looking statements, including statements regarding our ability to develop, commercialize and achieve market acceptance of our current and planned products and services, our research and development efforts, and other matters regarding our business strategies, use of capital, results of operations and financial position, and plans and objectives for future operations. In some cases, you can identify forward-looking statements by the words "may," "will," "could," "would," "should," "expect," "intend," "plan," "anticipate," "believe," "estimate," "predict," "project," "potential," "continue," "ongoing" or the negative of these terms or other comparable terminology, although not all forward-looking statements contain these words. These statements involve risks, uncertainties and other factors that may cause actual results, levels of activity, performance, or achievements to be materially different from the information expressed or implied by these forward-looking statements. These risks, uncertainties, other factors, and definition of our business metrics are described under "Risk Factors," "Management's Discussion and Analysis of Financial Condition and Results of Operations" and elsewhere in the documents we file with the Securities and Exchange Commission from time to time. We caution you that forward-looking statements are based on a combination of facts and factors currently known by us and our projections of the future, about which we cannot be certain. As a result, the forward-looking statements may not prove to be accurate. The forward-looking statements in this press release represent our views as of the date hereof. We undertake no obligation to update any forward-looking statements for any reason, except as required by law.   View source version on businesswire.com: https://www.businesswire.com/news/home/20260511135503/en/ Contacts Inquiries Media: Tiffany Chiu; [email protected] , +1(236)521-6774 Partnering: Murray McCutcheon, Ph.D.; [email protected] , +1(604)559-9005 Investor Relations: Peter Ahn; [email protected] , +1(778)729-9116

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