Cardiff Oncology Reports Second Quarter 2026 Results and Provides Business Update

Positive Phase 2 CRDF-004 data presented in an oral session at ASCO support advancement of 30 mg onvansertib plus FOLFIRI/bevacizumab into planned registrational program for first-line RAS-mutated mCRC

Following successful End-of-Phase 2 meeting with FDA, Company aligned on key elements of registrational trial; plans to initiate study in Q1 2027, subject to securing additional financing

Completed $10 million Registered Direct offering, extending cash runway

SAN DIEGO, Aug. 11, 2026 (GLOBE NEWSWIRE) -- Cardiff Oncology, Inc. (Nasdaq: CRDF), a clinical-stage biotechnology company leveraging PLK1 inhibition to develop novel cancer therapies, today announced financial results for the second quarter ended June 30, 2026, and provided a business update.

“The second quarter was an important period of progress for Cardiff, highlighted by the presentation of positive Phase 2 data at ASCO and our continued progress in preparation for a planned registrational trial of onvansertib in first-line RAS-mutated metastatic colorectal cancer,” said Mani Mohindru, PhD, President and Chief Executive Officer of Cardiff Oncology. “The updated CRDF-004 results reinforced our confidence in the selected registrational dose and regimen of 30 mg onvansertib in combination with FOLFIRI/bevacizumab. This regimen has demonstrated deep and durable tumor shrinkage over time, reflecting the synergistic mechanisms of action, while maintaining a well-tolerated safety profile with no overlapping or new toxicities when added to standard-of-care therapy.”

Dr. Mohindru continued, “Following our successful End-of-Phase 2 meeting with the FDA, we are preparing to initiate the planned Phase 3 trial in the first quarter of 2027, subject to securing additional financing. We believe the totality of data generated to date strengthens onvansertib’s potential to become an important new treatment option for patients with first-line RAS-mutated metastatic colorectal cancer, an area where there remains significant unmet need.”

Clinical and Regulatory Highlights

Presented Positive Results from Randomized, Controlled Phase 2 CRDF-004 Trial at the 2026 American Society of Clinical Oncology (“ASCO”) Annual Meeting

In June, Cardiff presented positive results from CRDF-004, its ongoing, randomized, controlled, dose-finding Phase 2 clinical trial evaluating onvansertib in combination with standard-of-care (“SoC”) regimens in patients with first-line RAS-mutated metastatic colorectal cancer (“mCRC”), in a rapid oral presentation at the 2026 ASCO Annual Meeting.

The trial achieved its primary goal of selecting the efficacious and safe dose of onvansertib plus SoC regimen for the registrational program. The selected regimen, 30 mg onvansertib in combination with FOLFIRI/bevacizumab (“bev”), demonstrated deep and durable tumor shrinkage, including clinically meaningful improvements in confirmed objective response rate (“ORR”) and progression-free survival (“PFS”) compared to SoC alone, with no additive adverse events observed. Data highlights from the ongoing Phase 2 trial, based on a March 18, 2026 data cut, are listed below, with the full press release available here:

• The 30 mg onvansertib plus FOLFIRI/bev arm achieved a confirmed ORR of 72.2% compared to 42.1% for FOLFIRI/bev alone, a 30% ORR improvement over SoC. The responses were deeper and more durable in the onvansertib arm.
• Secondary endpoint of PFS hazard ratio ("HR") of 0.55 (95% CI: 0.15–2.09) and 0.57 (95% CI: 0.20–1.65) for patients treated with 30 mg onvansertib plus FOLFIRI/bev vs. FOLFIRI/bev by Blinded Independent Central Review ("BICR") and investigator assessment ("IA"), respectively.
• Four patients remained on onvansertib treatment beyond 15 months, including two patients beyond 20 months.
• Onvansertib in combination with SoC regimens continued to be well-tolerated, with no major or unexpected toxicities and no additive adverse events observed.

The Phase 2 trial is still ongoing and as of a June 23, 2026 data cut, 12 patients remain on trial, with 8 patients in the onvansertib (20 or 30 mg) plus FOLFIRI/bev arms and one patient remaining on SoC.

Completed Successful End-of-Phase 2 (“EoP2”) Meeting with FDA and Advanced Phase 3 Readiness Activities

• Following completion of a successful EoP2 meeting, Cardiff aligned with the FDA on key design elements for its planned registrational Phase 3 trial of onvansertib in first-line RAS-mutated mCRC.
• The planned randomized, controlled Phase 3 trial is expected to evaluate 30 mg onvansertib in combination with FOLFIRI/bev compared to SoC FOLFIRI/bev as first-line therapy in patients with RAS-mutated mCRC. Cardiff is preparing to initiate the trial in the first quarter of 2027, subject to securing additional financing.

Preclinical Highlights

Presented New Preclinical Data at the 2026 American Association for Cancer Research (“AACR”) Annual Meeting Supporting the Rationale for Onvansertib in Combination with Antibody-Drug Conjugates (“ADCs”)

• In April, Cardiff presented new preclinical data at the 2026 AACR Annual Meeting supporting the rationale for onvansertib in combination with ADCs. The data demonstrated that onvansertib enhanced the activity of the HER2-targeted antibody-drug conjugate trastuzumab deruxtecan, driving tumor regression and overcoming resistance in HER2-low breast cancer models.

Corporate Update

• In February 2026, the Company received written notice from its licensor, Nerviano Medical Sciences S.r.l. (“NMS”), alleging that the Company was in material breach of the license agreement. NMS subsequently purported to terminate the license agreement based on the Company’s alleged material breach. The Company filed a lawsuit in May 2026 in the U.S. District Court for the Southern District of California seeking a declaratory judgment that it is not in material breach and injunctive relief requiring NMS to continue performing under the license agreement. The Company believes that NMS’s purported termination is legally ineffective, factually unsupported and procedurally improper, and the Company plans to continue performing under the license agreement.
• In July, Cardiff announced a $10 million registered direct offering of common stock and warrants to support working capital and general corporate purposes. The full press release is available here.

Second Quarter 2026 Financial Results

Liquidity, cash burn, and cash runway

As of June 30, 2026, Cardiff Oncology had approximately $34.5 million in cash, cash equivalents, and short-term investments. The amount as of June 30, 2026 does not include proceeds from the registered direct offering completed subsequent to quarter end.

Net cash used in operating activities for the six months ended June 30, 2026 was approximately $24.1 million, an increase of $3.0 million from $21.1 million for the same period in 2025.

Based on its current expectations and projections, the Company believes its current cash resources are sufficient to fund its operations into the third quarter of 2027.

Operating results

Total operating expenses were approximately $22.6 million for the six months ended June 30, 2026, a decrease of $6.8 million from $29.4 million for the same period in 2025. The decrease in operating expenses was primarily due to a decrease of $9.4 million in R&D expenses, mainly related to the completion of clinical trials, as well as fewer patients still on treatment in the Phase 2 mCRC trial, and a reduction in preclinical activities as the Company focuses on its upcoming Phase 3 mCRC trial. The decrease in expenses was partially offset by an increase of $2.6 million in SG&A expenses, primarily for employee severance agreements and corresponding modifications of stock options, as well as an increase in attorney costs related to Cardiff Oncology’s ongoing licensing dispute.

About Cardiff Oncology, Inc.

Cardiff Oncology is a clinical-stage biotechnology company advancing innovative cancer treatments focused on PLK1 inhibition, a validated oncology target with practice-changing potential. Our lead asset, onvansertib, is a highly specific, oral PLK1 inhibitor currently being evaluated in a Phase 2 trial for first-line treatment of RAS-mutated metastatic colorectal cancer (“mCRC”), addressing a large, underserved patient population with high unmet need. Onvansertib is also under investigation in other PLK1-driven cancers through ongoing investigator-initiated trials and has shown robust single-agent clinical activity in hard-to-treat tumors. By targeting tumor vulnerabilities, we aim to overcome treatment resistance and deliver improved clinical outcomes for patients.

For more information, please visit https://www.cardiffoncology.com.

Investor Contact

Candice Masse astr partners [email protected]

Media Contact

Amy Bonanno Lyra Strategic Advisory [email protected]

Cardiff Oncology, Inc. Condensed Statements of Operations (in thousands, except for per share amounts) (unaudited)

Three Months Ended June 30,

Six Months Ended June 30,

2026

2025

2026

2025

Royalty revenues

$

104

$

121

$

145

$

230

Costs and expenses:

Research and development

5,915

11,580

12,680

22,057

Selling, general and administrative

3,804

3,318

9,930

7,332

Total operating expenses

9,719

14,898

22,610

29,389

Loss from operations

(9,615

)

(14,777

)

(22,465

)

(29,159

)

Other income (expense), net:

Interest income

382

835

888

1,776

Other income (expense), net

1

(1

)

0

6

Total other income (expense), net

383

834

888

1,782

Net loss

(9,232

)

(13,943

)

(21,577

)

(27,377

)

Preferred stock dividend

(6

)

(6

)

(12

)

(12

)

Net loss attributable to common stockholders

$

(9,238

)

$

(13,949

)

$

(21,589

)

$

(27,389

)

Net loss per common share — basic and diluted

$

(0.14

)

$

(0.21

)

$

(0.32

)

$

(0.41

)

Weighted-average shares outstanding — basic and diluted

68,397

66,526

68,373

66,525

Cardiff Oncology, Inc. Condensed Balance Sheets (in thousands) (unaudited)

June 30, 2026

December 31, 2025

Assets

Current assets:

Cash and cash equivalents

$

9,197

$

17,470

Short-term investments

25,323

40,834

Accounts receivable and unbilled receivable

189

182

Prepaid expenses and other current assets

883

1,642

Total current assets

35,592

60,128

Property and equipment, net

450

578

Operating lease right-of-use assets

360

629

Other assets

927

549

Total Assets

$

37,329

$

61,884

Liabilities and Stockholders’ Equity

Current liabilities:

Accounts payable

$

3,986

$

8,087

Accrued liabilities

6,354

7,577

Operating lease liabilities

457

730

Total current liabilities

10,797

16,394

Operating lease liabilities, net of current portion

—

102

Total Liabilities

10,797

16,496

Stockholders’ equity

26,532

45,388

Total liabilities and stockholders’ equity

$

37,329

$

61,884