MCHX

Marchex Inc

A maker of AI-powered software that listens to company phone calls and reads text messages, turning everyday customer conversations into insight for businesses in industries like auto, healthcare, and home services. Founded in 2003 by former executives of the internet firm Go2Net, the company wove "market" and "exchange" together for its name. It began as a matchmaker between online shoppers and merchants before pivoting to conversation intelligence.

CUSIP: 56624R108TechnologyUS1 holder

Ownership Activity Financials Filings

Schedule 13D / 13G filings

Russell C. Horowitz

13DActivist

% of class18.5%

Shares8.81M

FiledJul 7, 2026

The information set forth or incorporated in Item 3 and Item 6 is hereby incorporated by reference in its entirety into this Item 4. The Reporting Person acquired beneficial ownership of the Shares as part of the transactions described in Item 3 above. The Reporting Person may in the future take actions with respect to his investment in Marchex as it deems appropriate, including changing his current intentions, with respect to any or all matters required to be disclosed in this Schedule 13D. From time to time, the Reporting Person may acquire beneficial ownership of additional securities of Marchex, by purchase or otherwise, including additional purchases of shares in the open-market or privately negotiated transactions or otherwise. In addition, from time to time, the Reporting Person may dispose of all or a portion of the securities of Marchex that he beneficially owns. Other than as described above, the Reporting Person has no plan or proposal that relates to or would result in any of the transactions involving Marchex described in subparagraphs (a) through (j) of Item 4 of Schedule 13D.

Holder	Schedule	% of class	Shares	Filed
Russell C. Horowitz	13DActivist	18.5%	8.81M	Jul 7, 2026
The information set forth or incorporated in Item 3 and Item 6 is hereby incorporated by reference in its entirety into this Item 4. The Reporting Person acquired beneficial ownership of the Shares as part of the transactions described in Item 3 above. The Reporting Person may in the future take actions with respect to his investment in Marchex as it deems appropriate, including changing his current intentions, with respect to any or all matters required to be disclosed in this Schedule 13D. From time to time, the Reporting Person may acquire beneficial ownership of additional securities of Marchex, by purchase or otherwise, including additional purchases of shares in the open-market or privately negotiated transactions or otherwise. In addition, from time to time, the Reporting Person may dispose of all or a portion of the securities of Marchex that he beneficially owns. Other than as described above, the Reporting Person has no plan or proposal that relates to or would result in any of the transactions involving Marchex described in subparagraphs (a) through (j) of Item 4 of Schedule 13D.