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Autolus Therapeutics Reports First Quarter 2026 Financial Results and Business Updates May 14, 2026 at 7:00 AM EDT AUCATZYL® (obecabtagene autoleucel; obe-cel) net product revenue of $26.2 million for the first quarter of 2026, reflecting strong launches in the US and most recently the UK Company achieves positive gross margin for the acute lymphoblastic leukemia (ALL) business Cost reduction initiative to drive gross profit margin improvement and path to profitability for the ALL business underway Obe-cel clinical development programs on track with trial enrollment ongoing in lupus nephritis, pediatric ALL and progressive multiple sclerosis (MS) Conference call to be held today at 8:30am EDT/1:30pm BST: conference call participants should pre-register using the link at the bottom of this press release LONDON and GAITHERSBURG, Md., May 14, 2026 (GLOBE NEWSWIRE) -- Autolus Therapeutics plc  (Nasdaq: AUTL), a commercial-stage biopharmaceutical company developing, manufacturing and delivering next-generation programmed T cell therapies and candidates, today announces its operational and financial results for the first quarter ended March 31, 2026. “In the first quarter, Autolus continued to expand market share for AUCATZYL in the US based on strong physician experience in adult ALL, and supported by reliable, high-quality product delivery. Our UK launch, which began in January, is off to a strong start, and we are expanding our reach in this market as well. We are pleased to report a turn to positive gross margin in the first quarter, and we expect continued improvement as we grow sales and manage costs,” said Dr. Christian Itin, Chief Executive Officer of Autolus. Dr. Itin continued, “Beyond adult ALL, given obe-cel’s established profile, we remain focused on broadening obe-cel’s utility in additional indications. Our Phase 2 pivotal studies, CATULUS in pediatric relapsed or refractory B-cell precursor ALL and LUMINA in severe lupus nephritis patients, and our Phase 1 BOBCAT trial in progressive MS, are underway and progressing well.” Dr. Itin concluded, “With good momentum with AUCATZYL and our pipeline, we continue optimizing our operating model and driving cost efficiency. The recently announced initiative will further enhance our margins, support scalable growth and position Autolus for long-term value creation.” Product and Pipeline Updates: AUCATZYL® Launch Autolus reported net product revenue of $26.2 million for the three months ended March 31, 2026, compared to $9.0 million for the same period the prior year. AUCATZYL launched in the UK in January 2026 and is now available under routine commissioning. Data from the ROCCA (Real-World Outcomes Collaborative for CAR T in Adult ALL) consortium covering commercial patients during the first year of launch of AUCATZYL in the US was presented at the TANDEM meeting in February 2026. This real-world data showed consistency in both safety and efficacy with the pivotal FELIX clinical trial that was the basis for regulatory approvals. The ROCCA consortium registry covered approximately 60% of US commercial patients at a data cutoff of January 2026. Obe-cel in pediatric r/r B-ALL The Phase 2 portion of the ongoing CATULUS Phase 1 trial of obe-cel in pediatric relapsed or refractory (r/r) B-cell precursor ALL (B-ALL) patients is underway and Autolus expects to report data at the end of 2027. The US Food and Drug Administration (FDA) has granted regenerative medicine advanced therapy (RMAT) designation to obe-cel for the treatment of pediatric patients with r/r B-ALL. Obe-cel in lupus nephritis Data from the Phase 1 CARLYSLE trial in patients with severe refractory systemic lupus erythematosus supported progression of obe-cel as a treatment for lupus nephritis (LN) and selection of the recommended Phase 2 dose of 50 million cells. Following alignment with the FDA on a potential registrational path to approval, the pivotal LUMINA Phase 2 trial is enrolling and the Company expects to report data in 2028. Obe-cel in progressive MS Autolus has advanced obe-cel into initial clinical development to explore treatment in progressive MS. The Phase 1 EX-99.1

trial, expected to include up to 18 adult patients, is enrolling and will determine the safety, tolerability, and preliminary efficacy of obe-cel in participants with refractory progressive forms of MS. The Company expects to report initial data from the trial at the end of 2026 and full data in 2027. AUTO8 in Light-Chain Amyloidosis The Phase 1 ALARIC trial evaluating AUTO8 in light-chain amyloidosis is ongoing and initial data are expected to be reported at the end of 2026. Operational Updates: In April 2026, Autolus announced a strategic initiative and plan to improve operational efficiency and reduce operating expenses. As part of this initiative, Autolus is imp

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Autolus Therapeutics Reports Fourth Quarter and Full Year 2025 Financial Results and Business Updates  March 27, 2026 at 7:00 AM EDT AUCATZYL® (obecabtagene autoleucel) net product revenue of $23.3 million* for the fourth quarter of 2025 and $74.3 million* for the full year of 2025 AUCATZYL® UK launch underway following successful National Institute for Health and Care Excellence (NICE) evaluation Autolus continues to expect full year 2026 AUCATZYL® net product revenue of $120 million to $135 million and shift to positive gross margin to occur in 2026 Independent real-world AUCATZYL® data from ROCCA consortium confirm high level of clinical activity with favorable safety profile Pivotal Phase 2 clinical trials with obe-cel in ​ lupus nephritis and pediatric ALL enrolling; initial clinical data from BOBCAT Phase 1 trial in progressive MS anticipated by year-end 2026 Conference call to be held today at 08:30 am EDT/12:30 pm GMT: conference call participants should pre-register using the link at the bottom of this press release LONDON and GAITHERSBURG, Md., March 27, 2026 (GLOBE NEWSWIRE) -- Autolus Therapeutics plc (Nasdaq: AUTL), a commercial-stage biopharmaceutical company developing, manufacturing and delivering next-generation programmed T cell therapies, today announces its operational and financial results for the fourth quarter and full year ended December 31, 2025. “Autolus had a strong first year of launch of AUCATZYL in the US building a market leading position in adult patients with relapsed or refractory B-ALL and demonstrating strong commercial execution, including reliable, high-quality product delivery with consistent turn-around time. Parallel to the launch, the ROCCA consortium collected real world data from approximately 60% of the commercial patients treated with AUCATZYL. Recently reported data confirm a high level of clinical activity without inducing high grade CRS and only 3% of patients experiencing high grade ICANS. We expect this positive customer experience will be a key driver for the future growth of AUCATZYL,” said Dr. Christian Itin, Chief Executive Officer of Autolus. Dr. Itin continued, “Our focus in 2026 will be on driving adoption of AUCATZYL in the US, launching in the UK and expanding the utility of obe-cel in additional indications while leveraging our established commercial and manufacturing capabilities. Based on regulatory feedback we are executing two compact pivotal studies: CATULUS in pediatric r/r B-ALL and LUMINA in severe lupus nephritis patients. In addition, we are exploring the utility of obe-cel in progressive MS patients in the Phase 1 BOBCAT study. Clinical data updates are planned for long-term follow up of the Phase 1 CARLYSLE data in severe SLE patients, initial clinical experience in light chain amyloidosis from the ALARIC study with AUTO8 and initial data from the BOBCAT study by the end of 2026.” Product and Pipeline Updates: AUCATZYL® Launch Autolus reported net product revenue of $23.3 million* for the three months ended December 31, 2025, and $74.3 million* for the year ended December 31, 2025, driven by U.S. sales. Following a successful National Institute for Health and Care Excellence (NICE) evaluation, AUCATZYL launched in the UK in January 2026 and is now available under routine commissioning. Data from the ROCCA (Real-World Outcomes Collaborative for CAR T in Adult ALL) consortium database evaluating patient characteristics, toxicity and response after real-world administration of AUCATZYL was presented at the American Society of Hematology (ASH) Annual Meeting in December 2025 and the TANDEM meeting in February 2026. Real-world data show consistency in both safety and efficacy compared to the FELIX clinical trial that was the basis for regulatory approvals. The ROCCA Consortium registry covers approximately 60% of U.S. commercial patients at a data cutoff of January 5, 2026. Obe-cel data in pediatric r/r B-ALL Preliminary data from the CATULUS Phase 1 trial of obe-cel in pediatric relapsed or refractory (r/r) B-ALL patients were presented at the American Society of Hematology (ASH) Annual Meeting in December 2025. Obe-cel demonstrated high remission rates in pediatric patients with high-risk r/r B-ALL with overall response rate (ORR) of 95.5%. Low rates of high-grade cytokine release syndrome (CRS) and immune effector cell-associated neurotoxicity EX-99.1

syndrome (ICANS) were observed, consistent with obe-cel’s adult safety profile. The Phase 2 portion of the trial is underway and Autolus expects to report data at the end of 2027. In October 2025, the U.S. Food and Drug Administration (FDA) granted regenerative medicine advanced therapy (RMAT) designation to obe-cel for the treatment of pediatric patients with r/r B-ALL. The RMAT designation is a program created under the 21st Century Cures Act to accelerate development and regulatory review of regenerative medicine ther

autl-202511120001730463FALSE00017304632025-11-122025-11-120001730463sic:Z88802025-11-122025-11-120001730463us-gaap:CommonClassAMember2025-11-122025-11-12

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): November 12, 2025

Autolus Therapeutics plc (Exact name of registrant as specified in its Charter)

England and Wales 001-38547Not applicable

(State or other jurisdiction of incorporation or organization) (Commission File Number)(I.R.S. Employer Identification No.)

The Mediaworks

191 Wood Lane

LondonW12 7FP United Kingdom (Address of principal executive offices)(Zip Code)

(44) 203829 6230

(Registrant's telephone number, including area code)

Not Applicable

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each classTrading Symbol(s)Name of each exchange on which registered American Depositary Shares, each representing one ordinary share, nominal value $0.000042 per share AUTLThe Nasdaq Global Select Market Ordinary shares, nominal value $0.000042 per share**The Nasdaq Stock Market LLC*

* Not for trading, but only in connection with the listing of the American Depositary Shares on The Nasdaq Global Select Market. The American Depositary Shares represent the right to receive ordinary shares and are being registered under the Securities Act of 1933, as amended, pursuant to a separate Registration Statement on Form F-6. Accordingly, the American Depositary Shares are exempt from the operation of Section 12(a) of the Securities Exchange Act of 1934, as amended, pursuant to Rule 12a-8 thereunder.

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Conditions. On November 12, 2025, Autolus Therapeutics plc (the “Company”) announced its financial results for the quarter ended September 30, 2025 and provided a corporate update. A copy of the press release is being furnished as Exhibit 99.1 hereto and is incorporated by reference herein. The information in this Item 2.02, including Exhibit 99.1 attached hereto, is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section. The information contained herein and in the accompanying exhibit is not incorporated by reference in any filing of the Company under the Securities Act of 1933, as amended (the “Securities Act”), or the Exchange Act, whether made before or after the date hereof, regardless of any general incorporation language in such filing, except as shall be expressly set forth by specific reference in such filing.

Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers. The Company's Board of directors previously designated Rob Dolski, the Company’s Chief Financial Officer, as the Company’s Principal Financial Officer and the Company’s Principal Accounting Officer for purposes of the reporting requirements of the Securities Exchange Act of 1934. On November 7, 2025, Mr. Dolski notified the Company of his intention to resign as principal accounting officer of the Company; Mr. Dolski will continue to serve as the Company’s Chief Financial Officer and Principal Financial Officer. On November 10, 2025, the Board of Directors of the Company appointed Patrick McIlvenny to serve as the Principal Accounting Officer of the Company, effective November 7, 2025. No additional compensation will be paid to Mr. McIlvenny in connection with the performance of these additional duties. There are no arrangements or understandings between Mr. McIlvenny and any other persons, pursuant to wh