Great Elm Group, Inc.

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

(Mark One)

☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended June 30,2026

OR

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO

Commission File Number 001-39832

(Exact name of Registrant as specified in its charter)

Registrant’s telephone number, including area code: (617)375-3006

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

Securities registered pursuant to Section 12(g) of the Act: None

Indicate by check mark if the Registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes  No ☒

Indicate by check mark if the Registrant is not required to file reports pursuant to Section 13 or 15(d) of the Act. Yes  No ☒

Indicate by check mark whether the Registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the Registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒No ☐

Indicate by check mark whether the Registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the Registrant was required to submit such files). Yes ☒No ☐

Indicate by check mark whether the Registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

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. ☐

Indicate by check mark whether the Registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report.☐

If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the correction of an error to previously issued financial statements.☐

Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the registrant’s executive officers during the relevant recovery period pursuant to § 240.10D-1(b). ☐

Indicate by check mark whether the Registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐No ☒

The aggregate market value of the voting and non-voting common equity held by non-affiliates of the Registrant, based on the closing price of the shares of common stock on The Nasdaq Global Select Market on December 31, 2025, was$30,268,395. This number does not include shares of common stock held by our investors Imperial Capital Asset Management, LLC and Northern Right Capital Management, L.P. and persons who are directors or executive officers.

The number of shares of the Registrant’s common stock outstanding as of August 20, 2026 was 31,094,890.

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the definitive proxy statement for the annual meeting of stockholders of the Registrant, to be filed with the Securities and Exchange Commission within 120 days of our fiscal year ended June 30, 2026, are incorporated by reference into Part III of this report.

TABLE OF CONTENTS

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Unless the context otherwise requires, “we,” “us,” “our,” the “Company,” “Great Elm,” “GEG” and terms of similar import refer to Great Elm Group, Inc. and/or its subsidiaries.

Cautionary Statement Regarding Forward-Looking Information

This report and certain information incorporated herein by reference contain forward-looking statements under the Private Securities Litigation Reform Act of 1995. Such statements often include words such as “may,” “will,” “should,” “believe,” “expect,” “seek,” “anticipate,” “intend,” “estimate,” “plan,” “target,” “project,” “forecast,” “envision” and other similar phrases. Although we believe the assumptions and expectations reflected in these forward-looking statements are reasonable, these assumptions and expectations may not prove to be correct, and we may not achieve the financial results or benefits anticipated. These forward-looking statements are not guarantees of actual results. Our actual results may differ materially from those suggested in the forward-looking statements. These forward-looking statements involve a number of risks and uncertainties, some of which are beyond our control, including, without limitation:

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the ability of Great Elm Capital Management, LLC (GECM) to profitably manage Great Elm Capital Corp. (NASDAQ: GECC), a business development company, and the ability of Monomoy CRE, LLC (MCRE) to manage Monomoy UpREIT, LLC (Monomoy UpREIT), the operating subsidiary of a private real estate investment trust with a portfolio of diversified net leased industrial assets;

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the dividend rate that GECC and Monomoy UpREIT will pay;

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the results of our investment management activities;

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our ability to sell the real estate properties we develop at a profit;

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our ability to raise capital to fund our business plan;

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our ability to make acquisitions and manage any businesses we may acquire;

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conditions in the equity capital markets and debt capital markets as well as the economy generally, including market uncertainty regarding changes to interest rates and inflationary pressures;

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our ability to maintain the security of electronic and other confidential information;

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serious disruptions and catastrophic events, including, for example, the potential impact of public health emergencies on the global economy;

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competition, mostly from larger, well-financed organizations (both domestic and foreign), including operating companies, global asset managers, investment banks, commercial banks, and private equity funds;

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outcomes of litigation and proceedings and the availability of insurance, indemnification and other third-party coverage of any losses suffered in connection therewith;

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maintaining our contractual arrangements and relationships with third parties;

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our ability to attract, assimilate, develop and retain key personnel;

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compliance with laws, regulations and orders;

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changes in laws and regulations governing our operations; and

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other factors described under “Item 1A. Risk Factors” or as set forth from time to time in our Securities and Exchange Commission (SEC) filings.

These forward-looking statements speak only as of the time of filing of this report and we do not undertake to update or revise them as more information becomes available. You are cautioned not to place undue reliance on these forward-looking statements. We do not undertake any obligation to release publicly any revisions to these forward-looking statements to reflect future events or circumstances or to reflect the occurrence of unanticipated events.