PRESS RELEASE

• PIVOT-006 Phase 3 topline data evaluating cretostimogene monotherapy as an adjuvant therapy in intermediate-risk NMIBC anticipated in the near-term
• BLA completion for HR BCG-unresponsive NMIBC expected fourth quarter 2026
• Phase 3 BOND-003 Cohort C Study Results published in The Lancet Oncology, further validating the strength of the clinical evidence supporting cretostimogene
• Well-positioned to deliver on key milestones with approximately $1.0 billion cash, cash equivalents and marketable securities sufficient to fund operations through 2029

DALLAS, Texas, Aug. 06, 2026 (GLOBE NEWSWIRE) — CG Oncology, Inc. (NASDAQ: CGON) today reported financial results for the second quarter ended June 30, 2026, and provided business updates.

“This quarter we have made significant progress across our clinical, regulatory, manufacturing and commercial-readiness initiatives, positioning the Company for long-term success.  PIVOT-006 has accrued the vast majority of the target events, and we look forward to sharing topline results soon. We are confident in the potential of cretostimogene and are committed to delivering what we believe will be a backbone therapy for patients,” stated Arthur Kuan, Chairman & Chief Executive Officer at CG Oncology.

Corporate Highlights

• In July, BOND-003 Cohort C Study Results were published in The Lancet Oncology validating the strength of the clinical evidence supporting cretostimogene
  • Title: Intravesical cretostimogene grenadenorepvec oncolytic immunotherapy in high-risk, BCG-unresponsive, non-muscle invasive bladder cancer with carcinoma in situ (BOND-003 Cohort C): a single-arm, phase 3 trial
• In July, the Superior Court of the State of Delaware denied ANI’s post-trial motion for a new trial and judgment as a matter of law, upholding the jury’s verdict in favor of CG Oncology that the invalidated royalty provision was properly severed and that the remainder of the agreement with ANI remains in force, while rejecting ANI’s challenges to the verdict and related claims
• In May, CORE-008 Cohort CX data were presented at the Society of Urologic Oncology (SUO) session at the American Urological Association (AUA) 2026 Annual Meeting

Anticipated 2026 Milestones

• PIVOT-006 (intermediate-risk NMIBC): Phase 3 topline data
• Completion of BLA submission in initial indication of HR BCG-unresponsive NMIBC with CIS with or without Ta/T1 disease in 4Q’26
• BOND-003 Cohort C (HR BCG-unresponsive NMIBC with CIS with or without Ta/T1 disease), BOND-003 Cohort P (HR BCG-unresponsive NMIBC in Ta/T1 disease without CIS), CORE-008 Cohort CX (HR BCG-exposed and BCG-unresponsive NMIBC) and CORE-008 Cohort A (HR BCG-naïve NMIBC with CIS +/- Ta/T1), durability data

Second Quarter Financial Highlights

• Cash Position: Cash, cash equivalents and marketable securities as of June 30, 2026 were $1.0 billion, compared with $1.1 billion as of March 31, 2026.  The Company anticipates its existing cash, cash equivalents and marketable securities as of this date will be sufficient to fund operations through 2029.
• Research and Development (R&D) Expenses: R&D expenses were $54.7 million for the second quarter of 2026, as compared to $31.3 million for the prior year period. The increase was primarily due to an increase in clinical trial expenses, including CMC costs, and an increase in compensation costs due to increased headcount.
• General and Administrative (G&A) Expenses: G&A expenses were $29.0 million for the second quarter of 2026, as compared to $17.4 million for the prior year period. The increase was primarily attributed to an increase in personnel-related expenses, including compensation costs from increased headcount.
• Net Loss: Net loss was $79.1 million, or $(0.90) per share, for the second quarter of 2026, as compared to a net loss of $41.4 million, or $(0.54) per share, for the prior year period.

About Cretostimogene Grenadenorepvec
Cretostimogene is an investigational, intravesically delivered oncolytic immunotherapy that has been studied in a clinical development program, which includes more than 600 patients with Non-Muscle Invasive Bladder Cancer (NMIBC). This program includes two Phase 3 clinical trials: BOND-003 for high-risk BCG-unresponsive NMIBC and PIVOT-006 for intermediate-risk NMIBC. CG Oncology also has a multi-cohort Phase 2 trial, CORE-008, evaluating the safety and efficacy of cretostimogene in high-risk NMIBC. Additionally, we have initiated an Expanded Access Program for cretostimogene in North America for patients who are unresponsive to BCG and meet certain program eligibility requirements. Cretostimogene is an investigational candidate, and its safety and efficacy have not been established by the FDA or any other health authority.

About CG Oncology
CG Oncology is a late-stage clinical biopharmaceutical company focused on developing and commercializing a potential backbone bladder-sparing therapeutic for patients afflicted with bladder cancer. CG Oncology sees a world where urologic cancer patients may benefit from our innovative immunotherapies to live with dignity and have an enhanced quality of life. To learn more, please visit: www.cgoncology.com.

Forward-Looking Statements
CG Oncology cautions you that statements contained in this press release regarding matters that are not historical facts are forward-looking statements. The forward-looking statements are based on our current beliefs and expectations and include, but are not limited to, statements regarding our anticipated cash runway, future results of operations and financial position; the anticipated timing and conduct of our ongoing and planned clinical trials and preclinical studies for cretostimogene, including anticipated next milestones in our development pipeline; the timing and likelihood of regulatory filings and approvals for cretostimogene; the potential therapeutic benefits of cretostimogene for high-risk and intermediate-risk NMIBC patients; and that cretostimogene has a best-in-disease product profile. Actual results may differ from those set forth in this press release due to the risks and uncertainties inherent in our business, including, without limitation: interim results of a clinical trial are not necessarily indicative of final results and one or more of the clinical outcomes may materially change as patient enrollment continues, following more comprehensive reviews of the data, and as more patient data becomes available; potential delays in the commencement, enrollment and completion of clinical trials, including the BOND-003 and PIVOT-006 trials; we may use our capital resources sooner than expected and they may be insufficient to allow us to achieve our anticipated milestones; our dependence on third parties in connection with manufacturing, shipping and clinical and preclinical testing; results from earlier clinical trials and preclinical studies not necessarily being predictive of future results; unexpected adverse side effects or inadequate efficacy of cretostimogene that may limit its development, regulatory approval, and/or commercialization; and other risks described in our filings with the Securities and Exchange Commission (SEC), including under the heading “Risk Factors” in our annual report on Form 10-K and other filings that we make with the SEC from time to time (which are available at www.sec.gov). You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date hereof, and we undertake no obligation to update such 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.

CONTACTS:
Media
Sarah Connors
Vice President, Communications and Patient Advocacy, CG Oncology
sarah.connors@cgoncology.com

Investor Relations
Megan Knight
Vice President, Investor Relations, CG Oncology
megan.knight@cgoncology.com