# EDGAR Filing Document

**Accession Number:** 0002052113
**File Stem:** 0000950142-25-002395
**Filing Date:** 2025-9
**Character Count:** 7779
**Document Hash:** 48325e68900913f0abd419e4b5debacb
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000950142-25-002395.hdr.sgml**: 20250908

**ACCESSION NUMBER**: 0000950142-25-002395

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13D/A

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20250908

**DATE AS OF CHANGE**: 20250908

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Mediaco Holding Inc.
- **CENTRAL INDEX KEY:** 0001784254
- **STANDARD INDUSTRIAL CLASSIFICATION:** RADIO BROADCASTING STATIONS [4832]
- **ORGANIZATION NAME:** 06 Technology
- **EIN:** 842427771
- **STATE OF INCORPORATION:** IN
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-91305
- **FILM NUMBER:** 251300045

**BUSINESS ADDRESS:**
- **STREET 1:** 48 WEST 25TH STREET, THIRD FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10010
- **BUSINESS PHONE:** 212-229-9797

**MAIL ADDRESS:**
- **STREET 1:** 48 WEST 25TH STREET, THIRD FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10010
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** BlackRock Portfolio Management LLC
- **CENTRAL INDEX KEY:** 0002052113

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D/A

**BUSINESS ADDRESS:**
- **STREET 1:** 50 HUDSON YARDS
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10001
- **BUSINESS PHONE:** (212) 810-5800

**MAIL ADDRESS:**
- **STREET 1:** 50 HUDSON YARDS
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10001

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## SCHEDULE 13D

### Under the Securities Exchange Act of 1934

**(Amendment No. 1)**

**MediaCo Holding Inc.**

*(Name of Issuer)*

**Class A common stock, par value $0.01 per share**

*(Title of Class of Securities)*

**58450D104**

*(CUSIP Number)*

**Joseph Virgilio**<br>BlackRock, Inc.<br>50 Hudson Yards<br>New York NY 10001<br>(212) 810-5800

*(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)*

**09/05/2025**

*(Date of Event Which Requires Filing of this Statement)*

| **CUSIP No.** | **58450D104** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**BlackRock Portfolio Management LLC** | Name of reporting person<br>**BlackRock Portfolio Management LLC** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[ ] (a)<br>[x] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[ ] (a)<br>[x] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**OO** | Source of funds (See Instructions)<br>**OO** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**DELAWARE** | Citizenship or place of organization<br>**DELAWARE** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**35257476.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**35257476.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**0.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**35257476.00** | Aggregate amount beneficially owned by each reporting person<br>**35257476.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**46.1%** | Percent of class represented by amount in Row (11)<br>**46.1%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**HC** | Type of Reporting Person (See Instructions)<br>**HC** | |

---

**Item 1. Security and Issuer**

**(a) Title of Class of Securities:**
Class A common stock, par value $0.01 per share

**(b) Name of Issuer:**
MediaCo Holding Inc.

**(c) Address of Issuer's Principal Executive Offices:**
48 WEST 25TH STREET, THIRD FLOOR, NEW YORK, NY, 10010

Explanatory Note

This Amendment No. 1 to the Schedule 13D amends and supplements the statement on Schedule 13D for BlackRock Portfolio Management LLC ("BPM"), an indirectly wholly owned subsidiary of BlackRock, Inc. ("BlackRock"), originally filed with the Securities and Exchange Commission (the "SEC") on July 3, 2025 (as amended, the "Schedule 13D").  Capitalized terms used in this Schedule 13D and not otherwise defined have the meanings set forth in the Schedule 13D.

**Item 5. Interest in Securities of the Issuer**

**(a)**
The responses of BPM to Rows (11) and (13) of the cover page of this Schedule 13D are incorporated herein by reference. None of the Covered Persons beneficially owns any shares of Class A Common Stock.

The aggregate percentages of shares of Class A Common Stock reported as beneficially owned by the Reporting Business Units were calculated based on 48,264,309 shares of Class A Common Stock issued and outstanding as of August 1, 2025, as disclosed in the Issuer's Quarterly Report on Form 10-Q filed with the SEC on August 14, 2025, plus 28,205,938 shares of Class A Common Stock issued upon exercise of the Warrant.

**(b)**
The responses of BPM to Rows (7) through (10) of the cover page of this Schedule 13D are incorporated herein by reference.

**(c)**
The Reporting Business Units engaged in the following transaction in the Issuer's Class A Common Stock in the 60-day period ended September 5, 2025: on September 5, 2025, Aggregator exercised the Warrant to purchase 28,206,152 Warrant Shares and paid the exercise price on a cashless basis, resulting in the Issuer withholding 214 of the Warrant Shares to pay the exercise price and issuing to Aggregator the remaining 28,205,938 Warrant Shares.

**Item 6. Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer.**

The information in Item 6 of the Schedule 13D is hereby amended and supplemented as follows:

On September 5, 2025, Aggregator exercised the Warrant to purchase 28,206,152 Warrant Shares and paid the exercise price on a cashless basis, resulting in the Issuer withholding 214 of the Warrant Shares to pay the exercise price and issuing to Aggregator the remaining 28,205,938 Warrant Shares. As a result, Aggregator is now the stockholder with respect to those Warrant Shares.

Except as set forth in this Schedule 13D, there are no contracts, arrangements, understandings or relationships between BPM and any other person with respect to any securities of the Issuer or among the Reporting Business Units, including but not limited to transfer or voting of any securities of the Issuer, finder's fees, joint ventures, loan or option arrangements, puts or calls, guarantees of profits, division of profits or loss, or the giving or withholding of proxies (other than the transfer of voting rights with respect to the shares of Class A Common Stock that are loaned out in the ordinary course of certain Reporting Business Units' securities lending programs).

### SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** BlackRock Portfolio Management LLC

**Signature:** /s/ Joseph Virgilio

**Name/Title:** Joseph Virgilio, Attorney-in-Fact

**Date:** 09/08/2025