$SPOK

$10.11 -$0.10 (0.98%) Close

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

Ownership

13F as of Q2 2026 · 20.9M shares outstanding

Who owns SPOK?

By type of holder

Institutions 51.7% Insiders 12.2% Everyone else 36.1%

Concentration Top 10 holders own 40.4%

BlackRock, Inc. 8.2% · Renaissance Technologies LLC 5.5%

Institutional ownership

51.7%

+1.5 pts vs last qtr

Institutional holders

131

-8 vs last qtr

Net shares bought

+323.2K

by institutions in Q2 2026

New / sold out

19 / 27

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Citadel Advisors LLC +165.7K
Qube Research & Technologies Ltd +115.6K

Biggest sellers in Q2 2026

Renaissance Technologies LLC −113.0K
Marshall Wace, LLP SOLD OUT −112.8K

Who is planning to sell?

Notices of proposed sale, last 12 months

$429K

3 notices from 2 people

Shares covered

38.3K

0.18% of the company

Arranged in advance

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Woods-Keisling Sharon Officer $334K
Christine M. Cournoyer Director $94.3K

Every notice on Red Flags →

A Form 144 is notice of a planned sale, not the sale itself. What insiders actually sold is on Insider Transactions.

Is your stake being diluted?

Diluted share count, FY2013–FY2025

−4.3%

−0.49% a year

Each share's claim on the business

+4.5%

grew without buying or selling a share

Spent on buybacks vs paid in stock

$25.9M vs $43M

over 10 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years69% 3–5 years3% 1–3 years18% Under 1 year10%

Quarterly turnover

10.4%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting SPOK on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
B BlackRock, Inc.	1.7M	8.22%	+43.0K (+2.6%)	≤2021	0.0%
Shares held by quarter Peak holding1.9M (Q3'25) Change over 8 quarters+308.3K Share of the company8.220% BlackRock, Inc.'s full portfolio →
RT Renaissance Technologies LLC	1.1M	5.49%	−113.0K (−9.0%)	≤2021	0.0%
Shares held by quarter Peak holding1.3M (Q1'26) Change over 8 quarters+148.9K Share of the company5.490% Renaissance Technologies LLC's full portfolio →

BlackRock, Inc.

1.7M

% of company

8.22%

Change vs last qtr

+43.0K (+2.6%)

Held since

≤2021

Renaissance Technologies LLC

1.1M

% of company

5.49%

Change vs last qtr

−113.0K (−9.0%)

Held since

≤2021

28 more super investors behind a free account

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

Institutional Funds

Mutual funds and ETFs reporting SPOK on Form N-PORT; together they hold 21.2% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$6.3M	615.1K	2.94%	0.00%	June 30, 2026
IR iShares Russell 2000 ETF iShares Trust	$5.18M	505.6K	2.42%	0.01%	June 30, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$6.3M

% of company

2.94%

% of the fund

0.00%

As of

June 30, 2026

iShares Russell 2000 ETF

iShares Trust

Position value

$5.18M

% of company

2.42%

% of the fund

0.01%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding Spok Holdings 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
ST Stein Todd J Insider	1.2M	5.51%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company5.510% Stein Todd J's insider activity →
KV Kelly Vincent D Insider	1.2M	5.51%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company5.510% Kelly Vincent D's insider activity →

Stein Todd J

Insider

1.2M

% of company

5.51%

Change vs last qtr

—

Held since

—

Kelly Vincent D

Insider

1.2M

% of company

5.51%

Change vs last qtr

—

Held since

—

7 more holders behind a free account

See every insider and 5%+ holder of Spok Holdings Inc.

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