CRDF

EX-99.1

2 crdf-ex99_1.htm

EX-99.1

EX-99.1

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, Calif., August 11, 2026 — 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 R

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8-K

0001213037false00012130372025-11-062025-11-06

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 06, 2025

Cardiff Oncology, Inc. (Exact name of Registrant as Specified in Its Charter)

Delaware

001-35558

27-2004382

(State or Other Jurisdiction of Incorporation)

(Commission File Number)

(IRS Employer Identification No.)

11055 Flintkote Avenue

San Diego, California

92121

(Address of Principal Executive Offices)

(Zip Code)

Registrant’s Telephone Number, Including Area Code: (858) 952-7570

(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: ☐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 class

Trading Symbol(s)

Name of each exchange on which registered

Common Stock

CRDF

The Nasdaq Stock Market LLC

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 Condition. On November 6, 2025, Cardiff Oncology, Inc. (the "Company") issued a press release announcing company highlights and financial results for the third quarter ended September 30, 2025. A copy of the press release is furnished as Exhibit 99.1 to this Form 8-K.

Item 9.01 Financial Statements and Exhibits. (d) Exhibits.

99.1

Press Release of Cardiff Oncology, Inc. dated November 6, 2025

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

CARDIFF ONCOLOGY, INC.

Date:

November 6, 2025

By:

/s/ Mark Erlander

Mark Erlander

Chief Executive Officer

8-K

false000121303700012130372025-07-292025-07-29

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): July 29, 2025

Cardiff Oncology, Inc. (Exact name of Registrant as Specified in Its Charter)

Delaware

001-35558

27-2004382

(State or Other Jurisdiction of Incorporation)

(Commission File Number)

(IRS Employer Identification No.)

11055 Flintkote Avenue

San Diego, California

92121

(Address of Principal Executive Offices)

(Zip Code)

Registrant’s Telephone Number, Including Area Code: (858) 952-7570

(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: ☐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 class

Trading Symbol(s)

Name of each exchange on which registered

Common Stock

CRDF

The Nasdaq Stock Market LLC

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 Condition. On July 29, 2025, Cardiff Oncology, Inc. (the "Company") issued a press release announcing company highlights and financial results for the second quarter ended June 30, 2025. A copy of the press release is furnished as Exhibit 99.1 to this Form 8-K.

Item 7.01 Regulation FD Disclosure.

On July 29, 2025, the Company plans to present in a conference call presentation materials related to the announcement of positive data from ongoing randomized phase 2 first-line RAS-mutated metastatic colorectal cancer (mCRC) clinical trial CRDF-004. A copy of the presentation materials is furnished as Exhibit 99.2 to this Form 8-K.

The information in this report, including the press release furnished as Exhibit 99.1 hereto, shall not be deemed to be “filed” for purposes of Section 18 of the Securities and Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that Section, and shall not be incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing. In addition, the exhibit furnished herewith contain statements intended as “forward-looking statements” that are subject to the cautionary statements about forward-looking statements set forth in such exhibit.

Item 8.01 Other Events.

On July 29, 2025, the Company issued a press release (the “Press Release”) announcing positive data from ongoing randomized phase 2 first-line RAS-mutated metastatic colorectal cancer (mCRC) clinical trial CRDF-004. A copy of the press release is attached as Exhibit 99.3 hereto. The information in the Press Release, except for the information set forth in the 2nd paragraph of the Press Release containing a quote by Roger Sidhu, MD, Chief Medical Officer of the Company and the 8th paragraph of the Press Release containing a quote by Mark Erlander, Chief Executive Officer of the Company, is incorporated herein by reference. Item 9.01 Financial Statements and Exhibits. (d) Exhibits.

99.1

Press Release of Cardiff Oncology, Inc. dated July 29, 2025

99.2

Cardiff Oncology, Inc. Corporate Presentation

99.3

Press Release of Cardiff Oncology, Inc. dated July 29, 2025

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

CARDIFF ONCOLOGY, INC.

Date:

July 29, 2025

By:

/s/ Mark Erlander

Mark Erlander

Chief Executive Officer

8-K

0001213037false00012130372025-05-082025-05-08

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): May 08, 2025

Cardiff Oncology, Inc. (Exact name of Registrant as Specified in Its Charter)

Delaware

001-35558

27-2004382

(State or Other Jurisdiction of Incorporation)

(Commission File Number)

(IRS Employer Identification No.)

11055 Flintkote Avenue

San Diego, California

92121

(Address of Principal Executive Offices)

(Zip Code)

Registrant’s Telephone Number, Including Area Code: (858) 952-7570

(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: ☐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 class

Trading Symbol(s)

Name of each exchange on which registered

Common Stock

CRDF

The Nasdaq Stock Market LLC

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 Condition. On May 8, 2025, Cardiff Oncology, Inc. issued a press release announcing company highlights and financial results for the first quarter ended March 31, 2025. A copy of the press release is furnished as Exhibit 99.1 to this Form 8-K. Item 9.01 Financial Statements and Exhibits. (d) Exhibits.

99.1

Press Release of Cardiff Oncology, Inc. dated May 8, 2025

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

CARDIFF ONCOLOGY, INC.

Date:

May 8, 2025

By:

/s/ Mark Erlander

Mark Erlander

Chief Executive Officer

8-K

0001213037false00012130372025-02-272025-02-27

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): February 27, 2025

Cardiff Oncology, Inc.

(Exact name of Registrant as Specified in Its Charter)

Delaware

001-35558

27-2004382

(State or Other Jurisdiction of Incorporation)

(Commission File Number)

(IRS Employer Identification No.)

11055 Flintkote Avenue

San Diego, California

92121

(Address of Principal Executive Offices)

(Zip Code)

Registrant’s Telephone Number, Including Area Code: (858) 952-7570

(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:

☐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 class

Trading Symbol(s)

Name of each exchange on which registered

Common Stock

CRDF

The Nasdaq Stock Market LLC

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 Condition.

On February 27, 2025, Cardiff Oncology, Inc. issued a press release announcing company highlights and financial results for the fourth quarter ended December 31, 2024. A copy of the press release is furnished as Exhibit 99.1 to this Form 8-K.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.

99.1

Press Release of Cardiff Oncology, Inc. dated February 27, 2025

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

CARDIFF ONCOLOGY, INC.

Date:

February 27, 2025

By:

/s/ Mark Erlander

Mark Erlander

Chief Executive Officer

8-K

0001213037false00012130372024-11-072024-11-07

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 07, 2024

Cardiff Oncology, Inc.

(Exact name of Registrant as Specified in Its Charter)

Delaware

001-35558

27-2004382

(State or Other Jurisdiction of Incorporation)

(Commission File Number)

(IRS Employer Identification No.)

11055 Flintkote Avenue

San Diego, California

92121

(Address of Principal Executive Offices)

(Zip Code)

Registrant’s Telephone Number, Including Area Code: (858) 952-7570

(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:

☐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 class

Trading Symbol(s)

Name of each exchange on which registered

Common Stock

CRDF

The Nasdaq Stock Market LLC

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 Condition.

On November 7, 2024, Cardiff Oncology, Inc. issued a press release announcing company highlights and financial results for the second quarter ended September 30, 2024. A copy of the press release is furnished as Exhibit 99.1 to this Form 8-K.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.

99.1

Press Release of Cardiff Oncology, Inc. dated November 7, 2024

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

CARDIFF ONCOLOGY, INC.

Date:

November 7, 2024

By:

/s/ Mark Erlander

Mark Erlander

Chief Executive Officer

crdf-202408080001213037FALSE00012130372024-08-082024-08-08

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 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): August 8, 2024

Cardiff Oncology, Inc. (Exact name of registrant as specified in its charter)

Delaware 001-35558 27-2004382 (State or other jurisdiction (Commission File Number) IRS Employer of incorporation or organization)Identification No.)

11055 Flintkote Avenue San Diego, CA 92121 (Address of principal executive offices)

Registrant’s telephone number, including area code: (858) 952-7570

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

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

Title of each class:

Trading Symbol(s)

Name of each exchange on which registered:

Common Stock

CRDF

Nasdaq Capital Market

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:

o             Written communication pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

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

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

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

Indicate by check mark whether the registrant is an emerging growth company as defined in 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 o 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.  o

1

Item 2.02    Results of Operations and Financial Conditions.

On August 8, 2024, Cardiff Oncology, Inc. issued a press release announcing company highlights and financial results for the second quarter ended June 30, 2024. A copy of the press release is furnished as Exhibit 99.1 to this Form 8-K.

Item 9.01.    Financial Statements and Exhibits

(d) Exhibits.

99.1Press Release of Cardiff Oncology, Inc. dated June 30, 2024.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Dated:         August 8, 2024

CARDIFF ONCOLOGY, INC.

By:/s/ Mark Erlander Mark Erlander Chief Executive Officer

2

crdf-202405020001213037FALSE00012130372024-05-022024-05-02

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 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): May 2, 2024

Cardiff Oncology, Inc. (Exact name of registrant as specified in its charter)

Delaware 001-35558 27-2004382 (State or other jurisdiction (Commission File Number) IRS Employer of incorporation or organization)Identification No.)

11055 Flintkote Avenue San Diego, CA 92121 (Address of principal executive offices)

Registrant’s telephone number, including area code: (858) 952-7570

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

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

Title of each class:

Trading Symbol(s)

Name of each exchange on which registered:

Common Stock

CRDF

Nasdaq Capital Market

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:

o             Written communication pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

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

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

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

Indicate by check mark whether the registrant is an emerging growth company as defined in 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 o 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.  o

1

Item 2.02    Results of Operations and Financial Conditions.

On May 2, 2024, Cardiff Oncology, Inc. issued a press release announcing company highlights and financial results for the first quarter ended March 31, 2024 . A copy of the press release is furnished as Exhibit 99.1 to this Form 8-K.

Item 9.01.    Financial Statements and Exhibits

(d) Exhibits.

99.1Press Release of Cardiff Oncology, Inc. dated May 2, 2024.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Dated:         May 2, 2024

CARDIFF ONCOLOGY, INC.

By:/s/ Mark Erlander Mark Erlander Chief Executive Officer

2

crdf-202402290001213037FALSE00012130372024-02-292024-02-29

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 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): February 29, 2024

Cardiff Oncology, Inc. (Exact name of registrant as specified in its charter)

Delaware 001-35558 27-2004382 (State or other jurisdiction (Commission File Number) IRS Employer of incorporation or organization)Identification No.)

11055 Flintkote Avenue San Diego, CA 92121 (Address of principal executive offices)

Registrant’s telephone number, including area code: (858) 952-7570

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

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

Title of each class:

Trading Symbol(s)

Name of each exchange on which registered:

Common Stock

CRDF

The Nasdaq Stock Market LLC

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:

o             Written communication pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

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

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

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

Indicate by check mark whether the registrant is an emerging growth company as defined in 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 o 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.  o

1

Item 2.02    Results of Operations and Financial Conditions.

On February 29, 2024, Cardiff Oncology, Inc. (the “Company”) issued a press release announcing company highlights and financial results for the fourth quarter and full year ended December 31, 2023.

A copy of the earnings press release is furnished as Exhibit 99.1 to this Form 8-K. On February 29, 2024, members of the Company’s management will hold a fourth quarter 2023 earnings conference call to discuss the Company’s financial results and the presentation attached hereto as Exhibit 99.4 will accompany management’s comments.

Item 7.01    Regulation FD Disclosure

The information set forth in Item 2.02 above is hereby incorporated herein by reference.

On February 29, 2024, the Company issued a press release which provided a clinical update on the first release of data from its second-line RAS-mutated metastatic colorectal cancer (mCRC) ONSEMBLE trial. In addition, on February 29, 2024, the Company announced that the first patient was dosed in its randomized first-line Phase 2 trial, CRDF-004, for patients with RAS-mutated metastatic colorectal cancer. A copy of each press releases is furnished as Exhibits 99.2 and 99.3 to this Form 8-K, respectively.

The information in this report, including the press release and the earnings conference call presentation furnished as Exhibits 99.1, 99.2, 99.3 and 99.4 hereto, shall not be deemed to be “filed” for purposes of Section 18 of the Securities and Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that Section, and shall not be incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing. In addition, the exhibits furnished herewith contain statements intended as “forward-looking statements” that are subject to the cautionary statements about forward-looking statements set forth in such exhibits.

Item 9.01.    Financial Statements and Exhibits

(d) Exhibits.

99.1Earnings Press Release of Cardiff Oncology, Inc. dated February 29, 2024.

99.2Clinical Update Press Release of Cardiff Oncology, Inc. dated February 29, 2024.

99.3First Patient Dosed Press Release of Cardiff Oncology, Inc. dated February 29, 2024.

99.4Fourth Quarter 2023 earnings conference call presentation materials, dated February 29, 2024.

104Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Dated:         February 29, 2024

CARDIFF ONCOLOGY, INC.

By:/s/ Mark Erlander Mark Erlander Chief Executive Officer

2

crdf-202311020001213037FALSE00012130372023-11-022023-11-02

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 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 2, 2023

Cardiff Oncology, Inc. (Exact name of registrant as specified in its charter)

Delaware 001-35558 27-2004382 (State or other jurisdiction (Commission File Number) IRS Employer of incorporation or organization)Identification No.)

11055 Flintkote Avenue San Diego, CA 92121 (Address of principal executive offices)

Registrant’s telephone number, including area code: (858) 952-7570

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

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

Title of each class:

Trading Symbol(s)

Name of each exchange on which registered:

Common Stock

CRDF

Nasdaq Capital Market

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:

o             Written communication pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

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

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

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

Indicate by check mark whether the registrant is an emerging growth company as defined in 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 o 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.  o

1

Item 2.02 Results of Operations and Financial Conditions.

On November 2, 2023, Cardiff Oncology, Inc. issued a press release announcing company highlights and financial results for the third quarter ended September 30, 2023. A copy of the press release is furnished as Exhibit 99.1 to this Form 8-K. On November 2, 2023, members of the Company’s management will hold a third quarter 2023 earnings conference call to discuss the Company’s financial results and the presentation attached hereto as Exhibit 99.2 will accompany management’s comments.

Item 7.01 Regulation FD Disclosure.

The information set forth in Item 2.02 above is hereby incorporated herein by reference.

The information in this report, including the press release and the earnings conference call presentation furnished as Exhibits 99.1 and 99.2 hereto, shall not be deemed to be “filed” for purposes of Section 18 of the Securities and Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that Section, and shall not be incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing. In addition, the exhibits furnished herewith contain statements intended as “forward-looking statements” that are subject to the cautionary statements about forward-looking statements set forth in such exhibits.

Item 9.01. Financial Statements and Exhibits

(d) Exhibits.

99.1Press Release of Cardiff Oncology, Inc. dated November 2, 2023.

99.2Third Quarter 2023 earnings conference call presentation materials, dated November 2, 2023.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Dated:         November 2, 2023

CARDIFF ONCOLOGY, INC.

By:/s/ Mark Erlander Mark Erlander Chief Executive Officer

2

crdf-202308080001213037FALSE12/3100012130372023-08-082023-08-08

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 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): August 8, 2023

Cardiff Oncology, Inc. (Exact name of registrant as specified in its charter)

Delaware 001-35558 27-2004382 (State or other jurisdiction (Commission File Number) IRS Employer of incorporation or organization)Identification No.)

11055 Flintkote Avenue San Diego, CA 92121 (Address of principal executive offices)

Registrant’s telephone number, including area code: (858) 952-7570

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

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

Title of each class:

Trading Symbol(s)

Name of each exchange on which registered:

Common Stock

CRDF

Nasdaq Capital Market

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:

o             Written communication pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

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

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

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

Indicate by check mark whether the registrant is an emerging growth company as defined in 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 o 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.  o

1

Item 2.02 Results of Operations and Financial Conditions.

On August 9, 2023, Cardiff Oncology, Inc. issued a press release announcing company highlights and financial results for the second quarter ended June 30, 2023. A copy of the press release is furnished as Exhibit 99.1 to this Form 8-K.

The information disclosed under this Item 2.02, including Exhibit 99.1 hereto, is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, nor shall it be incorporated by reference into any registration statement or other document pursuant to the Securities Act of 1933, as amended, except as expressly set forth in such filing.

Item 5.03 Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year.

On August 8, 2023, Cardiff Oncology, Inc. (the “Company”) filed, with the Secretary of State of the State of Delaware, a Certificate of Elimination (the “Certificate of Elimination”) of Series B, Series C, Series D and Series E Convertible Preferred Stock removing the designation and other references to its Series B, Series C, Series D and Series E Convertible Stock from the Company’s Amended and Restated Certificate of Incorporation, as amended. The Certificate of Elimination eliminates and returns the 8,860, 200,000, 154,670 and 865,825 shares of preferred stock previously designated as Series B, Series C, Series D and Series E Preferred Stock, respectively, and no longer issued and outstanding, to the status of authorized but unissued shares of preferred stock, without designation.

The foregoing description of the Certificate of Elimination does not purport to be complete and is qualified in its entirety by reference to the full text of the Certificate of Elimination, which is filed as Exhibit 3.1 to this Current Report on Form 8-K and incorporated by reference herein.

Item 9.01. Financial Statements and Exhibits

(d) Exhibits.

3.1Certificate of Elimination of Series B, Series C, Series D and Series E Convertible Preferred Stock dated as of August 8, 2023.

99.1Press Release of Cardiff Oncology, Inc. dated August 9, 2023.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Dated:         August 9, 2023

CARDIFF ONCOLOGY, INC.

By:/s/ Mark Erlander Mark Erlander Chief Executive Officer

2

crdf-202305040001213037FALSE00012130372023-05-042023-05-04

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 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): May 4, 2023

Cardiff Oncology, Inc. (Exact name of registrant as specified in its charter)

Delaware 001-35558 27-2004382 (State or other jurisdiction (Commission File Number) IRS Employer of incorporation or organization)Identification No.)

11055 Flintkote Avenue San Diego, CA 92121 (Address of principal executive offices)

Registrant’s telephone number, including area code: (858) 952-7570

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

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

Title of each class:

Trading Symbol(s)

Name of each exchange on which registered:

Common Stock

CRDF

Nasdaq Capital Market

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:

o             Written communication pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

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

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

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

Indicate by check mark whether the registrant is an emerging growth company as defined in 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 o 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.  o

1

Item 2.02 Results of Operations and Financial Conditions.

On May 4, 2023, Cardiff Oncology, Inc. issued a press release announcing company highlights and financial results for the first quarter ended March 31, 2023. A copy of the press release is furnished as Exhibit 99.1 to this Form 8-K.

The information disclosed under this Item 2.02, including Exhibit 99.1 hereto, is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, nor shall it be incorporated by reference into any registration statement or other document pursuant to the Securities Act of 1933, as amended, except as expressly set forth in such filing.

Item 9.01. Financial Statements and Exhibits

(d) Exhibits.

99.1Press Release of Cardiff Oncology, Inc. dated May 4, 2023.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Dated:         May 4, 2023

CARDIFF ONCOLOGY, INC.

By:/s/ Mark Erlander Mark Erlander Chief Executive Officer

2

crdf-202303020001213037FALSE00012130372023-03-022023-03-02

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 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): March 2, 2023

Cardiff Oncology, Inc. (Exact name of registrant as specified in its charter)

Delaware 001-35558 27-2004382 (State or other jurisdiction (Commission File Number) IRS Employer of incorporation or organization)Identification No.)

11055 Flintkote Avenue San Diego, CA 92121 (Address of principal executive offices)

Registrant’s telephone number, including area code: (858) 952-7570

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

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

Title of each class:

Trading Symbol(s)

Name of each exchange on which registered:

Common Stock

CRDF

Nasdaq Capital Market

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:

o             Written communication pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

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

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

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

Indicate by check mark whether the registrant is an emerging growth company as defined in 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 o 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.  o

1

Item 2.02 Results of Operations and Financial Conditions.

On March 2, 2023, Cardiff Oncology, Inc. issued a press release announcing company highlights and financial results for the fourth quarter and fiscal year ended December 31, 2022. A copy of the press release is furnished as Exhibit 99.1 to this Form 8-K.

The information disclosed under this Item 2.02, including Exhibit 99.1 hereto, is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, nor shall it be incorporated by reference into any registration statement or other document pursuant to the Securities Act of 1933, as amended, except as expressly set forth in such filing.

Item 9.01. Financial Statements and Exhibits

(d) Exhibits.

99.1Press Release of Cardiff Oncology, Inc. dated March 2, 2023.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Dated:         March 2, 2023

CARDIFF ONCOLOGY, INC.

By:/s/ Mark Erlander Mark Erlander Chief Executive Officer

2

crdf-202211030001213037FALSE00012130372022-11-032022-11-03

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 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 3, 2022

Cardiff Oncology, Inc. (Exact name of registrant as specified in its charter)

Delaware 001-35558 27-2004382 (State or other jurisdiction (Commission File Number) IRS Employer of incorporation or organization)Identification No.)

11055 Flintkote Avenue San Diego, CA 92121 (Address of principal executive offices)

Registrant’s telephone number, including area code: (858) 952-7570

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

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

Title of each class:

Trading Symbol(s)

Name of each exchange on which registered:

Common Stock

CRDF

Nasdaq Capital Market

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:

o             Written communication pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

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

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

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

Indicate by check mark whether the registrant is an emerging growth company as defined in 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 o 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.  o

1

Item 2.02 Results of Operations and Financial Conditions.

On November 3, 2022, Cardiff Oncology, Inc. issued a press release announcing company highlights and financial results for the third quarter ended September 30, 2022. A copy of the press release is furnished as Exhibit 99.1 to this Form 8-K.

The information disclosed under this Item 2.02, including Exhibit 99.1 hereto, is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, nor shall it be incorporated by reference into any registration statement or other document pursuant to the Securities Act of 1933, as amended, except as expressly set forth in such filing.

Item 9.01. Financial Statements and Exhibits

(d) Exhibits.

99.1Press Release of Cardiff Oncology, Inc. dated November 3, 2022.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Dated:         November 3, 2022

CARDIFF ONCOLOGY, INC.

By:/s/ Mark Erlander Mark Erlander Chief Executive Officer

2

crdf-202208040001213037FALSE00012130372022-08-042022-08-04

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 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): August 4, 2022

Cardiff Oncology, Inc. (Exact name of registrant as specified in its charter)

Delaware 001-35558 27-2004382 (State or other jurisdiction (Commission File Number) IRS Employer of incorporation or organization)Identification No.)

11055 Flintkote Avenue San Diego, CA 92121 (Address of principal executive offices)

Registrant’s telephone number, including area code: (858) 952-7570

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

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

Title of each class:

Trading Symbol(s)

Name of each exchange on which registered:

Common Stock

CRDF

Nasdaq Capital Market

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:

o             Written communication pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

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

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

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

Indicate by check mark whether the registrant is an emerging growth company as defined in 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 o 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.  o

1

Item 2.02 Results of Operations and Financial Conditions.

On August 4, 2022, Cardiff Oncology, Inc. issued a press release announcing company highlights and financial results for the second quarter ended June 30, 2022. A copy of the press release is furnished as Exhibit 99.1 to this Form 8-K.

The information disclosed under this Item 2.02, including Exhibit 99.1 hereto, is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, nor shall it be incorporated by reference into any registration statement or other document pursuant to the Securities Act of 1933, as amended, except as expressly set forth in such filing.

Item 9.01. Financial Statements and Exhibits

(d) Exhibits.

99.1Press Release of Cardiff Oncology, Inc. dated August 4, 2022.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Dated:         August 4, 2022

CARDIFF ONCOLOGY, INC.

By:/s/ Mark Erlander Mark Erlander Chief Executive Officer

2

crdf-202205050001213037FALSE00012130372022-05-052022-05-05

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 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): May 5, 2022

Cardiff Oncology, Inc. (Exact name of registrant as specified in its charter)

Delaware 001-35558 27-2004382 (State or other jurisdiction (Commission File Number) IRS Employer of incorporation or organization)Identification No.)

11055 Flintkote Avenue San Diego, CA 92121 (Address of principal executive offices)

Registrant’s telephone number, including area code: (858) 952-7570

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

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

Title of each class:

Trading Symbol(s)

Name of each exchange on which registered:

Common Stock

CRDF

Nasdaq Capital Market

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:

o             Written communication pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

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

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

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

Indicate by check mark whether the registrant is an emerging growth company as defined in 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 o 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.  o

1

Item 2.02 Results of Operations and Financial Conditions.

On May 5, 2022, Cardiff Oncology, Inc. issued a press release announcing company highlights and financial results for the third quarter ended March 31, 2022. A copy of the press release is furnished as Exhibit 99.1 to this Form 8-K.

The information disclosed under this Item 2.02, including Exhibit 99.1 hereto, is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, nor shall it be incorporated by reference into any registration statement or other document pursuant to the Securities Act of 1933, as amended, except as expressly set forth in such filing.

Item 9.01. Financial Statements and Exhibits

(d) Exhibits.

99.1Press Release of Cardiff Oncology, Inc. dated May 5, 2022.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Dated:         May 5, 2022

CARDIFF ONCOLOGY, INC.

By:/s/ Mark Erlander Mark Erlander Chief Executive Officer

2

crdf-202202240001213037FALSE00012130372022-02-242022-02-24

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 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): February 24, 2022

Cardiff Oncology, Inc. (Exact name of registrant as specified in its charter)

Delaware 001-35558 27-2004382 (State or other jurisdiction (Commission File Number) IRS Employer of incorporation or organization)Identification No.)

11055 Flintkote Avenue San Diego, CA 92121 (Address of principal executive offices)

Registrant’s telephone number, including area code: (858) 952-7570

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

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

Title of each class:

Trading Symbol(s)

Name of each exchange on which registered:

Common Stock

CRDF

Nasdaq Capital Market

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:

o             Written communication pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

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

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

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

Indicate by check mark whether the registrant is an emerging growth company as defined in 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 o 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.  o

1

Item 2.02 Results of Operations and Financial Conditions.

On February 24, 2022, Cardiff Oncology, Inc. issued a press release announcing company highlights and financial results for the fourth quarter and fiscal year ended December 31, 2021. A copy of the press release is furnished as Exhibit 99.1 to this Form 8-K.

The information disclosed under this Item 2.02, including Exhibit 99.1 hereto, is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, nor shall it be incorporated by reference into any registration statement or other document pursuant to the Securities Act of 1933, as amended, except as expressly set forth in such filing.

Item 9.01. Financial Statements and Exhibits

(d) Exhibits.

99.1Press Release of Cardiff Oncology, Inc. dated February 24, 2022.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Dated:         February 24, 2022

CARDIFF ONCOLOGY, INC.

By:/s/ Mark Erlander Mark Erlander Chief Executive Officer

2

crdf-202111040001213037FALSE00012130372021-11-042021-11-04

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 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 4, 2021

Cardiff Oncology, Inc. (Exact name of registrant as specified in its charter)

Delaware 001-35558 27-2004382 (State or other jurisdiction (Commission File Number) IRS Employer of incorporation or organization)Identification No.)

11055 Flintkote Avenue San Diego, CA 92121 (Address of principal executive offices)

Registrant’s telephone number, including area code: (858) 952-7570

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

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

Title of each class:

Trading Symbol(s)

Name of each exchange on which registered:

Common Stock

CRDF

Nasdaq Capital Market

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:

o             Written communication pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

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

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

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

Indicate by check mark whether the registrant is an emerging growth company as defined in 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 o 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.  o

1

Item 2.02 Results of Operations and Financial Conditions.

On November 4, 2021, Cardiff Oncology, Inc. issued a press release announcing company highlights and financial results for the third quarter ended September 30, 2021. A copy of the press release is furnished as Exhibit 99.1 to this Form 8-K.

The information disclosed under this Item 2.02, including Exhibit 99.1 hereto, is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, nor shall it be incorporated by reference into any registration statement or other document pursuant to the Securities Act of 1933, as amended, except as expressly set forth in such filing.

Item 9.01. Financial Statements and Exhibits

(d) Exhibits.

99.1Press Release of Cardiff Oncology, Inc. dated November 4, 2021.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Dated:         November 4, 2021

CARDIFF ONCOLOGY, INC.

By:/s/ Mark Erlander Mark Erlander Chief Executive Officer

2

crdf-202108050001213037FALSE00012130372021-08-052021-08-05

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 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): August 5, 2021

Cardiff Oncology, Inc. (Exact name of registrant as specified in its charter)

Delaware 001-35558 27-2004382 (State or other jurisdiction (Commission File Number) IRS Employer of incorporation or organization)Identification No.)

11055 Flintkote Avenue San Diego, CA 92121 (Address of principal executive offices)

Registrant’s telephone number, including area code: (858) 952-7570

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

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

Title of each class:

Trading Symbol(s)

Name of each exchange on which registered:

Common Stock

CRDF

Nasdaq Capital Market

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:

o             Written communication pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

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

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

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

Indicate by check mark whether the registrant is an emerging growth company as defined in 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 o 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.  o

1

Item 2.02 Results of Operations and Financial Conditions.

On August 5, 2021, Cardiff Oncology, Inc. issued a press release announcing company highlights and financial results for the second quarter ended June 30, 2021. A copy of the press release is furnished as Exhibit 99.1 to this Form 8-K.

The information disclosed under this Item 2.02, including Exhibit 99.1 hereto, is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, nor shall it be incorporated by reference into any registration statement or other document pursuant to the Securities Act of 1933, as amended, except as expressly set forth in such filing.

Item 9.01. Financial Statements and Exhibits

(d) Exhibits.

99.1Press Release of Cardiff Oncology, Inc. dated August 5, 2021.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Dated:         August 5, 2021

CARDIFF ONCOLOGY, INC.

By:/s/ Mark Erlander Mark Erlander Chief Executive Officer

2