Statement of Changes in Beneficial Ownership (Form 4)

FORM 4 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 that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * Onorati Joseph Mario 2. Issuer Name and Ticker or Trading Symbol DeFi Development Corp. [DFDV] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director __X__ 10% Owner __X__ Officer (give title below) _____ Other (specify below) CEO and Chairman (Last) (First) (Middle) C/O DEFI DEVELOPMENT CORP., 6401 CONGRESS AVENUE SUITE 250 3. Date of Earliest Transaction (Month/Day/Year) 10/07/2026 (Street) BOCA RATON, FL 33487 4. If Amendment, Date Original Filed (Month/Day/Year) 6. Individual or Joint/Group Filing (Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) 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) Code V Amount (A) or (D) Price Common Stock 10/07/2026 J(1) 271,043 D $ 0 0 I By SolSync Solutions Partnership(2) Common Stock 10/07/2026 J(1) 271,043 A $ 0 271,043 I By DeFi International Holding, LLC(3) Common Stock 2,216,137 I By 3277447 Nova Scotia Ltd(4) Series A Preferred Stock 4,500 I By 3277447 Nova Scotia Ltd(4)

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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 Underlying Securities (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 of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Warrant (Right to buy)

$22.5

10/07/2026

J(1)

27,104

11/16/2025

01/21/2028

Common Stock

27,104

$ 0

0

I

By SolSync Solutions Partnership(2)

Warrant (Right to buy)

$22.5

10/07/2026

J(1)

27,104

11/16/2025

01/21/2028

Common Stock

27,104

$ 0

27,104

I

By DeFi International Holding, LLC(3)

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Onorati Joseph Mario C/O DEFI DEVELOPMENT CORP. 6401 CONGRESS AVENUE SUITE 250 BOCA RATON, FL 33487	X	X	CEO and Chairman

Signatures

/s/Joseph Mario Onorati		10/09/2026
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	On October 7, 2026, SolSync Solutions Partnership, an Alaska general partnership (the "Partnership"), dissolved and distributed all of the securities of the Issuer that it held to its two partners in kind, in complete liquidation of their partnership interests and in proportion to their respective percentage interests, for no consideration. Mr. Onorati previously reported only the securities held by the Partnership in which he had a pecuniary interest.
(2)	Parker White and DeFi International Holding, LLC were partners of SolSync Solutions Partnership, an Alaska general partnership. Parker White was the managing partner and maintained voting and dispositive control over the securities held by the Partnership. Following the distribution, the Partnership holds no securities of the Issuer and is being wound up.
(3)	DeFi International Holding, LLC, a Wyoming limited liability company, was a partner of the Partnership and received these securities in the distribution. Mr. Onorati is a manager of DeFi International Holding, LLC and may be deemed to beneficially own the securities it holds.
(4)	Mr. Onorati is the control person as director and president of 3277447 Nova Scotia Ltd and may be deemed to control 3277447 Nova Scotia Ltd.

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