$MCHX

$1.44 +$0.18 (14.29%) Close

$MCHX Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 44.3M shares outstanding

Who owns MCHX?

By type of holder

Institutions 48.0% Insiders 26.0% Everyone else 26.0%

Concentration Top 10 holders own 66.0%

Edenbrook Capital, LLC 33.1% · Russell C. Horowitz 19.9%

Institutional ownership

48.0%

+0.1 pts vs last qtr

Institutional holders

+1 vs last qtr

Net shares bought

+31.9K

by institutions in Q2 2026

New / sold out

3 / 2

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Arax Advisory Partners NEW +145.9K
BlackRock, Inc. +16.2K

Biggest sellers in Q2 2026

Acuitas Investments, LLC −31.0K
Renaissance Technologies LLC −29.4K

Who is planning to sell?

No insider has filed a notice of proposed sale (Form 144) for Marchex Inc in the last 12 months.

Is your stake being diluted?

There are not yet two fiscal years of reported share counts for Marchex Inc.

How patient are the owners?

Institutional shares by how long they've been held

5+ years92% 3–5 years0% 1–3 years7% Under 1 year1%

Quarterly turnover

0.7%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting MCHX on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
EC Edenbrook Capital, LLC	14.7M	33.07%	Unchanged	≤2021	4.8%
Shares held by quarter Peak holding14.7M (Q1'25) Change over 8 quarters+102.5K Share of the company33.070% Edenbrook Capital, LLC's full portfolio →
RT Renaissance Technologies LLC	1.6M	3.56%	−29.4K (−1.8%)	≤2021	0.0%
Shares held by quarter Peak holding1.8M (Q3'24) Change over 8 quarters−200.6K Share of the company3.560% Renaissance Technologies LLC's full portfolio →

Edenbrook Capital, LLC

14.7M

% of company

33.07%

Change vs last qtr

Unchanged

Held since

≤2021

Renaissance Technologies LLC

1.6M

% of company

3.56%

Change vs last qtr

−29.4K (−1.8%)

Held since

≤2021

25 more super investors behind a free account

See every manager holding Marchex Inc, how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting MCHX on Form N-PORT; together they hold 6.5% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
PF Philotimo Focused Growth & Income World Funds Trust	$2.09M	1.3M	2.93%	1.52%	June 30, 2026
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$1.05M	653.9K	1.47%	0.00%	June 30, 2026

Philotimo Focused Growth & Income

World Funds Trust

Position value

$2.09M

% of company

2.93%

% of the fund

1.52%

As of

June 30, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$1.05M

% of company

1.47%

% of the fund

0.00%

As of

June 30, 2026

16 more funds behind a free account

See every fund holding Marchex Inc and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
RC Russell C. Horowitz 5%+ holder 13D · 18.5%	8.8M	19.88%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company19.880% Disclosed stake13D · 18.5% View the 13D/G filing →

Russell C. Horowitz

5%+ holder13D · 18.5%

8.8M

% of company

19.88%

Change vs last qtr

—

Held since

—

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