Mediaco Holding Inc.

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

(Mark One)

for the Fiscal Year Ended December 31, 2024

For the transition period from to

Commission File Number 001-39029

MEDIACO HOLDING INC.

(Exact name of registrant as specified in its charter)

Indiana

(State of incorporation or organization)

84-2427771

(I.R.S. Employer Identification No.)

48 W 25th Street, 3rd Floor

New York, New York 10011

(Address of principal executive offices)

(212)447-1000

(Registrant’s Telephone Number, Including Area Code)

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. Yeso No x

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yeso No x

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 x Noo

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 x Noo

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 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 pursuant to Section 13(a) of the Exchange Act. o

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. o

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. o

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). o

Indicate by check mark whether the Registrant is a shell company (as defined in Rule 12b-2 of the Act). Yeso Nox

The aggregate market value of the voting and non-voting common stock held by non-affiliates of the registrant, as of June 30, 2024, the last business day of the Registrant’s most recently completed second fiscal quarter, was $13,485,737.

The number of shares outstanding of each of MediaCo Holding Inc.’s classes of common stock, as of March 21, 2025, was:

41,275,414 Class A Common Shares, $.01 par value

5,413,197 Class B Common Shares, $.01 par value

— Class C Common Shares, $.01 par value

DOCUMENTS INCORPORATED BY REFERENCE

FORM 10-K

TABLE OF CONTENTS

CERTAIN DEFINITIONS

Unless the context requires otherwise, all references in this report to “MediaCo,” “the Company,” “we,” “our,” “us,” and similar terms refer to MediaCo Holding Inc. and its consolidated subsidiaries.

FORWARD-LOOKING STATEMENTS

This report includes or incorporates forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended (“Exchange Act”). You can identify these forward-looking statements by our use of words such as “intend,” “plan,” “may,” “will,” “project,” “estimate,” “anticipate,” “believe,” “expect,” “continue,” “potential,” “opportunity” and similar expressions, whether in the negative or affirmative. Such forward-looking statements, which speak only as of the date hereof, are based on managements’ estimates, assumptions and beliefs regarding our future plans, intentions and expectations. We cannot guarantee that we will achieve these plans, intentions or expectations. All statements regarding our expected financial position, business, results of operations and financing plans are forward-looking statements.

Actual results or events could differ materially from the plans, intentions or expectations disclosed in the forward-looking statements we make. We have included important facts in various cautionary statements in this report that we believe could cause our actual results to differ materially from forward-looking statements that we make. These include, but are not limited to, the factors described in Part I, Item 1A, “Risk Factors.”

The forward-looking statements do not reflect the potential impact of any future acquisitions, mergers or dispositions. We undertake no obligation to update or revise any forward-looking statements because of new information, future events or otherwise.