Cardiff Oncology Reports Third Quarter 2024 Results and Provides Business Update

- Published positive Phase 2 trial results of onvansertib in combination with FOLFIRI and bev in second-line KRAS mutant mCRC in the peer-reviewed Journal of Clinical Oncology -

- Initial data readout from first-line RAS-mutated mCRC randomized CRDF-004 trial expected by the end of 2024-

- Projected runway with current cash resources into Q1 2026 -

SAN DIEGO, November 7, 2024 -- Cardiff Oncology, Inc. (Nasdaq: CRDF), a clinical-stage biotechnology company leveraging PLK1 inhibition to develop novel therapies across a range of cancers, today announced financial results and recent highlights for the third quarter ended September 30, 2024.

“This quarter has been exciting as our Phase 2 clinical trial in second-line KRAS-mutant mCRC was published in one of the most esteemed medical journals in the field of oncology, Journal of Clinical Oncology. Our findings demonstrated that onvansertib combined with FOLFIRI/bev was well-tolerated, and revealed a 7.7x greater clinical benefit in bev naïve patients compared to patients who were previously treated with bev,” said Mark Erlander, Ph.D., Chief Executive Officer of Cardiff Oncology. “We believe the results of our JCO publication validate our ongoing CRDF-004 trial evaluating onvansertib + chemo for the treatment of mCRC in the first-line setting, where all patients are bev naïve. Furthermore, we are pleased with the progress we have made in the trial as we leverage Pfizer’s resources and capabilities, and are grateful for the commitment from the patients and investigators at our trial sites across the U.S. As of today, the trial continues to generate patient data that will allow us to provide an initial data release by the end of the year. Overall, we are optimistic about onvansertib’s potential to become a meaningful treatment option for the 50,000 new patients diagnosed with RAS-mutated mCRC in the U.S. every year who have not had access to any new treatment options in several decades.”

Upcoming expected milestones

•First-line RAS-mutated metastatic colorectal cancer (mCRC) randomized initial data readout from the CRDF-004 trial expected by end of 2024

Company highlights for the quarter ended September 30, 2024 and subsequent weeks include:

•Published clinical data of the combination of onvansertib with FOLFIRI and bev in second-line KRAS mutant mCRC in the peer-reviewed Journal of Clinical Oncology, the flagship publication of the American Society of Clinical Oncology (ASCO)

•Phase 2 clinical trial treating patients with KRAS-mutant mCRC (NCT03829410) demonstrated that onvansertib combined with FOLFIRI and bevwas well-tolerated, and exhibited clinical activity in the second-line setting.

•A post hoc analysis revealed a greater clinical benefit in bev naïve patients, who demonstrated an ORR of 77% and mPFS of 14.9 months compared to an ORR of 10% and mPFS of 6.6 months in those previously exposed to bev.

•Published promising preclinical data demonstrating the combination of onvansertib and alpelisib in PIK3CA-mutated HR-positive breast cancer resistant to palbociclib and endocrine therapy in the peer-reviewed journal, Cancers

•The combination of onvansertib and alpelisib synergistically inhibited cell viability, suppressed PI3K signaling, and induced G2/M arrest and apoptosis in PI3K-activated cell lines.

•The combination demonstrated superior anti-tumor activity compared to the single agents in three PDX models.

•Pharmacodynamic studies confirmed inhibition of both PLK1 and PI3K activity and pronounced apoptosis in the combination-treated tumors.

•The findings support that targeting PLK1 and PI3Kα with onvansertib and alpelisib, respectively, may be a promising strategy for patients with PIK3CA-mutant HR+ breast cancer failing ET + CDK4/6i therapies and warrant clinical evaluation.

Third Quarter 2024 Financial Results

Liquidity, cash burn, and cash runway

As of September 30, 2024, Cardiff Oncology had approximately $57.7 million in cash, cash equivalents, and short-term investments.

Net cash used in operating activities for the third quarter of 2024 was approximately $10.5 million, an increase of approximately $2.5 million from $8.0 million for the same period in 2023.

Based on its current expectations and projections, the Company believes its current cash resources are sufficient to fund its operations into Q1 2026.

Operating results

Total operating expenses were approximately $12.8 million for the three months ended September 30, 2024, an increase of $1.8 million from $11.0 million for the same period in 2023. The increase in operating expenses was primarily due to clinical programs and outside service costs related to the development of our lead drug candidate, onvansertib.

About Cardiff Oncology, Inc.

Cardiff Oncology is a clinical-stage biotechnology company leveraging PLK1 inhibition, a well-validated oncology drug target, to develop novel therapies across a range of cancers. The Company's lead asset is onvansertib, a PLK1 inhibitor being evaluated in combination with standard of care (SoC) therapeutics in clinical programs targeting indications such as RAS-mutated metastatic colorectal cancer (mCRC), as well as in ongoing and planned investigator-initiated trials in metastatic pancreatic ductal adenocarcinoma (mPDAC), small cell lung cancer (SCLC) and triple negative breast cancer (TNBC). These programs and the Company's broader development strategy are designed to target tumor vulnerabilities in order to overcome treatment resistance and deliver superior clinical benefit compared to SoC alone. For more information, please visit https://www.cardiffoncology.com.

Forward-Looking Statements

Certain statements in this press release are forward-looking within the meaning of the Private Securities Litigation Reform Act of 1995. These statements may be identified using words such as "anticipate," "believe," "forecast," "estimated" and "intend" or other similar terms or expressions that concern Cardiff Oncology's expectations, strategy, plans or intentions. These forward-looking statements are based on Cardiff Oncology's current expectations and actual results could differ materially. There are several factors that could cause actual events to differ materially from those indicated by such forward-looking statements. These factors include, but are not limited to, clinical trials involve a lengthy and expensive process with an uncertain outcome, and results of earlier studies and trials may not be predictive of future trial results; our clinical trials may be suspended or discontinued due to unexpected side effects or other safety risks that could preclude approval of our product candidate; results of preclinical studies or clinical trials for our product candidate could be unfavorable or delayed; our need for additional financing; risks related to business interruptions, including the outbreak of an epidemic or pandemic such as the COVID-19 coronavirus and cyber-attacks on our information technology infrastructure, which could seriously harm our financial condition and increase our costs and expenses; uncertainties of government or third party payer reimbursement; dependence on key personnel; limited experience in marketing and sales; substantial competition; uncertainties of patent protection and litigation; dependence upon third parties; and risks related to failure to obtain FDA clearances or approvals and noncompliance with FDA regulations. There are no guarantees that our product candidate will be utilized or prove to be commercially successful. Additionally, there are no guarantees that future clinical trials will be completed or successful or that our product candidate will receive regulatory approval for any indication or prove to be commercially successful. Investors should read the risk factors set forth in Cardiff Oncology's Form 10-K for the year ended December 31, 2023, and other periodic reports filed with the Securities and Exchange Commission. While the list of factors presented here is considered representative, no such list should be considered to be a complete statement of all potential risks and uncertainties. Unlisted factors may present significant additional obstacles to the realization of forward-looking statements. Forward-looking statements included herein are made as of the date hereof, and Cardiff Oncology does not undertake any obligation to update publicly such statements to reflect subsequent events or circumstances.

Cardiff Oncology Contact:

James Levine

Chief Financial Officer

858-952-7670
jlevine@cardiffoncology.com

Investor Contact:

Kiki Patel, PharmD

Gilmartin Group

332-895-3225
Kiki@gilmartinir.com

Media Contact:

Grace Spencer

Taft Communications

609-583-1151

grace@taftcommunications.com

Cardiff Oncology, Inc.

Condensed Statements of Operations

(in thousands, except for per share amounts)

(unaudited)

	Three Months Ended September 30,						Nine Months Ended September 30,
	2024			2023			2024			2023
Royalty revenues	$	165		$	141		$	532		$	332
Costs and expenses:
Research and development		9,640			8,022			27,140			25,094
Selling, general and administrative		3,126			2,939			9,471			10,318
Total operating expenses		12,766			10,961			36,611			35,412
Loss from operations		(12,601	)		(10,820	)		(36,079	)		(35,080	)
Other income (expense), net:
Interest income, net		741			1,068			2,472			3,061
Other income (expense), net		5			21			(37	)		(85	)
Total other income, net		746			1,089			2,435			2,976
Net loss		(11,855	)		(9,731	)		(33,644	)		(32,104	)
Preferred stock dividend		(6	)		(6	)		(18	)		(18	)
Net loss attributable to common stockholders	$	(11,861	)	$	(9,737	)	$	(33,662	)	$	(32,122	)
Net loss per common share — basic and diluted	$	(0.25	)	$	(0.22	)	$	(0.74	)	$	(0.72	)
Weighted-average shares outstanding — basic and diluted		46,865			44,677			45,461			44,677

Cardiff Oncology, Inc.

Condensed Balance Sheets

(in thousands)

(unaudited)

	September 30, 2024		December 31, 2023
Assets
Current assets:
Cash and cash equivalents	$	13,038	$	21,655
Short-term investments		44,629		53,168
Accounts receivable and unbilled receivable		618		288
Prepaid expenses and other current assets		1,047		2,301
Total current assets		59,332		77,412
Property and equipment, net		993		1,238
Operating lease right-of-use assets		1,304		1,708
Other assets		1,267		1,279
Total Assets	$	62,896	$	81,637
Liabilities and Stockholders’ Equity
Current liabilities:
Accounts payable	$	4,643	$	1,966
Accrued liabilities		7,175		7,783
Operating lease liabilities		707		691
Total current liabilities		12,525		10,440
Operating lease liabilities, net of current portion		979		1,458
Total Liabilities		13,504		11,898
Stockholders’ equity		49,392		69,739
Total liabilities and stockholders’ equity	$	62,896	$	81,637

Cardiff Oncology, Inc.

Condensed Statements of Cash Flows

(in thousands)

(unaudited)

	Nine Months Ended September 30,
	2024			2023
Operating activities
Net loss	$	(33,644	)	$	(32,104	)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation		308			295
Stock-based compensation expense		3,556			3,600
Accretion of discounts on short-term investments, net		(440	)		(716	)
Changes in operating assets and liabilities		2,794			5,177
Net cash used in operating activities		(27,426	)		(23,748	)
Investing activities
Capital expenditures		(80	)		(574	)
Net purchases, maturities and sales of short-term investments		9,297			23,208
Net cash provided by investing activities		9,217			22,634
Financing activities
Proceeds from sales of common stock, net of expenses		9,232			—
Proceeds from exercise of options		360			—
Net cash provided by financing activities		9,592			—
Net change in cash and cash equivalents		(8,617	)		(1,114	)
Cash and cash equivalents—Beginning of period		21,655			16,347
Cash and cash equivalents—End of period	$	13,038		$	15,233