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Form 8-K

sec.gov

8-K — DeFi Development Corp.

Accession: 0001805526-26-000109

Filed: 2026-09-21

Period: 2026-09-21

CIK: 0001805526

SIC: 6199 (FINANCE SERVICES)

Item: Other Events

Item: Financial Statements and Exhibits

Documents

8-K — dfdv-20260921.htm (Primary)

EX-99.1 (dfdv-exx991_92126.htm)

XML — IDEA: XBRL DOCUMENT (R1.htm)

8-K

8-K (Primary)

Filename: dfdv-20260921.htm · Sequence: 1

dfdv-20260921

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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): September 21, 2026

DEFI DEVELOPMENT CORP.

(Exact name of registrant as specified in its charter)

Nevada 001-41748 83-2676794

(State or other jurisdiction

of Incorporation) (Commission File Number) (IRS Employer

Identification Number)

6401 Congress Avenue, Suite 250

Boca Raton, FL

33487

(Address of registrant’s principal executive office) (Zip code)

(561) 559-4111

(Registrant’s telephone number, including area code)

Not Applicable

(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 (see General Instruction A.2. below):

☐ 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, par value $0.00001 per share DFDV The Nasdaq Stock Market LLC

Warrants, each warrant exercisable for one share of Common Stock DFDVW The Nasdaq Stock Market LLC

Variable Rate Series C Perpetual Preferred Stock, par value $0.00001 CHAD 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 8.01. Other Events.

On September 21, 2026, DeFi Development Corp. (“DFDV” or the “Company”) announced that during the period from September 14, 2026 through September 18, 2026, DFDV grew its SOL and SOL Equivalents by 101,381. The Company reported the following information as of the dates indicated below:

September 11, 2026 September 18, 2026 % Change

SOL and SOL equivalents 2,388,923 2,490,304 4%

The Company expects SOL held in treasury to be deployed through its staking, validator and onchain treasury infrastructure, subject to market conditions and risk management considerations.

On September 21, 2026, the Company also issued a press release announcing, among other matters, the closing of R.F. Lafferty & Co., Inc.'s exercise of its over-allotment option in connection with the initial public offering of the Company's Variable Rate Series C Perpetual Preferred Stock. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference.

Cautionary Note Regarding Forward-Looking Statements.

This Form 8-K and the exhibits attached hereto contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. These forward-looking statements are based on the Company’s current assumptions, expectations and beliefs and are subject to substantial risks, uncertainties, assumptions and changes in circumstances that may cause the Company’s actual results, performance or achievements to differ materially from those expressed or implied in any forward-looking statement. These risks include, but are not limited to, market risks, trends and conditions, and are more fully described in the section captioned “Risk Factors” in the Company’s most recent Annual Report on Form 10-K, subsequent Quarterly Reports on Form 10-Q and other reports the Company files with the SEC.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits.

Exhibit No. Description

99.1

Press Release, dated as of September 21, 2026

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

1

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.

Date: September 21, 2026 DEFI DEVELOPMENT CORP.

By: /s/ Joseph Onorati

Name: Joseph Onorati

Title: Chairman & CEO

2

EX-99.1

EX-99.1

Filename: dfdv-exx991_92126.htm · Sequence: 2

Document

Exhibit 99.1

September 21, 2026

DFDV Grows SOL Treasury 4% in One Week as Accumulation Accelerates

SOL accumulation accelerates, with total treasury holdings increasing over $10M week over week

Quarter-to-date, SOL has outperformed the Nasdaq-100 by 54%, and DFDV has outperformed SOL by 2x over that same period

CHAD over-allotment option closes for an additional $1.65 million in gross proceeds

Latest purchase expands treasury to 2,490,304 SOL and SOL equivalents

BOCA RATON, FL — September 21, 2026 — DeFi Development Corp. (Nasdaq: DFDV) (the "Company" or "DeFi Dev Corp."), the first U.S. public company with a treasury strategy built to accumulate and compound Solana ("SOL"), today announced that it has added approximately 101,381 SOL to its treasury since September 14, 2026, bringing total holdings to approximately 2,490,304 SOL and SOL equivalents.

The latest increase represents approximately 4.24% treasury growth in one week and reflects continued SOL purchases alongside organic treasury growth. With the recently established $300 million CHAD ATM providing an additional source of growth capital, the Company believes its SOL accumulation flywheel is continuing to gain momentum.

“We are firing on all cylinders,” said Joseph Onorati, Chief Executive Officer of DeFi Development Corp. “We added over $10 million of SOL in just one week and our stock continues to outperform SOL. With CHAD now established as an additional funding engine, we believe we are better positioned than ever to accelerate our treasury growth.”

The Company also announced the closing of the underwriter’s exercise of its over-allotment option in connection with CHAD’s initial public offering, generating approximately $1.65 million in additional gross proceeds through the issuance of 206,250 additional CHAD shares.

CHAD, DFDV’s Nasdaq-listed Variable Rate Series C Perpetual Preferred Stock, was designed to provide the Company with a scalable source of perpetual capital for acquiring additional SOL. The Company has also established an at-the-market (“ATM”) offering facility for up to $300 million of CHAD, with any issuance intended to occur at or above CHAD’s $10.00 stated amount.

Learn more about CHAD at www.defidevcorp.com/chad.

For more information, visit defidevcorp.com. To stay up to date with the latest developments and insights, subscribe to our blog.

About DeFi Development Corp.

DeFi Development Corp. (Nasdaq: DFDV) has adopted a treasury policy under which the principal holding in its treasury reserve is allocated to SOL. Through this strategy, the Company provides investors with direct economic exposure to SOL, while also actively participating in the growth of the Solana ecosystem. In addition to holding and staking SOL, DeFi Development Corp. operates its own validator infrastructure, generating staking rewards and fees from delegated stake. The Company is also engaged across decentralized finance (DeFi) opportunities and continues to explore innovative ways to support and benefit from Solana’s expanding application layer.

The Company is also an AI-powered online platform that connects the commercial real estate industry by providing value-add services and software subscriptions to multifamily and commercial property professionals, as the Company connects the increasingly complex ecosystem that stakeholders have to manage. The Company’s data and software offerings are generally offered on a subscription basis as software as a service.

Forward Looking Statements

This press release contains "forward-looking statements" within the meaning of the safe harbor provisions of the U.S. Private Securities Litigation Reform Act of 1995. Forward-looking statements in this press release include, but are not limited to, statements regarding the anticipated issuance price of shares under the ATM program, the intended use of proceeds, and the Company’s ability to expand its SOL treasury and increase revenue, and can be identified by words such as "anticipate," "intend," "plan," "believe," "project," "estimate," "expect," "strategy," "future," "likely," "may," "should," "will" and similar references to future periods. Forward-looking statements are neither historical facts nor assurances of future performance. Instead, they are based only on the Company's current beliefs, expectations, and assumptions regarding the future of its business, future plans and strategies, projections, anticipated events and trends, the economy, and other future conditions. Because forward-looking statements relate to the future, they are subject to inherent uncertainties, risks, and changes in circumstances that are difficult to predict, many of which are outside of the Company's control. The Company's actual results and financial condition may differ materially from those indicated in the forward-looking statements. Therefore, you should not rely on any of these forward-looking statements.

Important factors that could cause our actual results and financial condition to differ materially from those indicated in the forward-looking statements include, among others, the following: (i) fluctuations in the market price of SOL and any associated losses that the Company may incur as a result of a decrease in the market price of SOL; (ii) a failure for the demand for SOL, or activity on the SOL network, to continue to develop and grow as predicted in our DFDV Model or at all; (iii) volatility in our stock price, including due to future issuances of common stock and securities convertible into common stock; (iv) the effect of and uncertainties related to the ongoing volatility in interest rates; (v) our ability to achieve and maintain profitability in the future; (vi) the impact on our business of the regulatory environment and complexities of complying with such environment, including changes in securities laws or other laws or regulations; (vii)

changes in the accounting treatment relating to the Company's SOL holdings; (viii) our ability to respond to general economic conditions; (ix) our ability to manage our growth effectively and our expectations regarding the development and expansion of our business; (x) our ability to access sources of capital, including debt financing and other sources of capital to finance operations and growth; and (xi) other risks and uncertainties more fully described in the section captioned "Risk Factors" in the Company's most recent Annual Report on Form 10-K and other reports we file with the SEC.

As a result of these matters, changes in facts, assumptions not being realized, or other circumstances, the Company's actual results may differ materially from the expected results discussed in the forward-looking statements contained in this press release. Forward-looking statements contained in this announcement are made as of this date, and the Company undertakes no duty to update such information except as required under applicable law.

Investor Contact:

ir@defidevcorp.com

Media Contact:

press@defidevcorp.com

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