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Cardiff Oncology (CRDF) CFO receives 486,650 options at $1.58 strike

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Cardiff Oncology, Inc. Chief Financial Officer Joshua B. Muntner reported a compensation-related grant of 486,650 stock options on April 6, 2026. These options allow him to purchase common stock at an exercise price of $1.58 per share and expire on April 6, 2036.

According to the vesting terms, 121,663 options vest on April 6, 2027, and 10,139 options vest monthly for 36 months thereafter. Following the grant, he holds 487,150 stock options and 500 shares of common stock, all reported as directly owned.

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Insider Muntner Joshua B
Role Chief Financial Officer
Type Security Shares Price Value
Grant/Award Stock Options 486,650 $0.00 --
holding Common Stock -- -- --
Holdings After Transaction: Stock Options — 487,150 shares (Direct); Common Stock — 500 shares (Direct)
Footnotes (1)
  1. [object Object]
Options granted 486,650 stock options Grant to CFO on April 6, 2026
Exercise price $1.58 per share Strike price for granted options
Options expiration April 6, 2036 Expiration date of granted options
Initial vesting tranche 121,663 options Vest on April 6, 2027
Monthly vesting amount 10,139 options Vest monthly for 36 months after April 6, 2027
Options after transaction 487,150 stock options Total options held following grant
Common shares held 500 shares Direct common stock holdings after transaction
Stock Options financial
"security_title": "Stock Options""
Stock options are agreements that give a person the right to buy or sell a company's stock at a specific price within a certain time frame. They are often used as a reward or incentive, similar to a coupon that can be used later if the stock price rises, allowing the holder to make a profit.
exercise price financial
"conversion_or_exercise_price": "1.5800""
The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.
vesting financial
"121,663 vest on April 6, 2027 and 10,139 vest monthly"
Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.
expiration date financial
"expiration_date": "2036-04-06T00:00:00.000Z""
The expiration date is the deadline after which a financial contract, such as an option or a futures agreement, is no longer valid or can be exercised. It matters to investors because it determines the timeframe during which they can take action or benefit from the contract, similar to how a coupon or a food item has a limited period of usefulness. Once the expiration date passes, the contract loses its value or ability to be used.
underlying security financial
"underlying_security_title": "Common Stock""
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Muntner Joshua B

(Last)(First)(Middle)
11055 FLINTKOTE AVENUE

(Street)
SAN DIEGO CALIFORNIA 92121

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
Cardiff Oncology, Inc. [ CRDF ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
XOfficer (give title below)Other (specify below)
Chief Financial Officer
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
04/06/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock500D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Stock Options$1.5804/06/2026A486,650 (1)04/06/2036Common Stock486,650$0487,150D
Explanation of Responses:
1. 121,663 vest on April 6, 2027 and 10,139 vest monthly for 36 months thereafter.
/s/ Joshua Muntner04/16/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What did Cardiff Oncology (CRDF) disclose about its CFO’s Form 4 transaction?

Cardiff Oncology reported that CFO Joshua B. Muntner received a grant of 486,650 stock options on April 6, 2026. The options are compensation-related, not an open-market purchase, and give him the right to buy common shares at a fixed exercise price.

How many stock options did the Cardiff Oncology (CRDF) CFO receive and at what price?

The CFO received 486,650 stock options with an exercise price of $1.58 per share. These options relate to Cardiff Oncology common stock and provide the right, but not obligation, to purchase shares at that price before expiration.

What is the vesting schedule for the Cardiff Oncology (CRDF) CFO stock options?

Of the granted options, 121,663 vest on April 6, 2027, and 10,139 vest monthly for 36 months after that date. This staggered vesting structure ties compensation to continued service over several years.

When do the newly granted Cardiff Oncology (CRDF) stock options expire?

The reported stock options granted to the CFO expire on April 6, 2036. This long-dated expiration gives a multi-year window during which vested options can be exercised at the $1.58 per share strike price.

How many Cardiff Oncology (CRDF) securities does the CFO hold after this Form 4?

After the reported grant, the CFO holds 487,150 stock options and 500 shares of common stock, all listed as directly owned. These figures show his reported derivative and share position as of the transaction date.

Is the Cardiff Oncology (CRDF) CFO Form 4 a stock purchase or a grant?

The Form 4 reflects a grant or award acquisition of stock options, coded as “A,” rather than an open-market stock purchase. It is a compensation award that establishes potential future share purchases at a set exercise price.