As of November 6, 2026, Spok Holdings, Inc is a publicly traded company (Nasdaq: SPOK); its largest reported holder is Renaissance Technologies, with 5.13% on Schedule 13G of August 13, 2025. The largest insider holding is Todd J. Stein, a director, with 1,152,871 shares (5.5% of shares outstanding), per Form 4 of October 2, 2026 (Schedule 13G, August 13, 2025).
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Is Spok Holdings, Inc a real, registered company?
- Spok Holdings Inc files with the SEC under CIK 1289945 (its SEC filings).
- Its shares are listed under the ticker SPOK on Nasdaq (SEC company record).
- Incorporated in Delaware; business address in Plano, Texas, as its SEC filings state.
- Court and bankruptcy records: see Before you sign or pay below.
Before you sign or pay
- Court and bankruptcy: No federal court case or bankruptcy filing found under Spok Holdings Inc in our court records and SEC 8-K records (as of 2026-11-06).
- Leadership changes: the latest reported is Michael W. Wallace, Chief Financial Officer (Form 8-K filed 2026-04-14). Check you are dealing with the people now in charge.
- Ownership: 5%+ holders are reported on Schedule 13D or 13G; the latest names Renaissance Technologies (filed 2025-08-13).
Who are Spok Holdings, Inc's owners and officers?
Spok Holdings, Inc: incorporated in Delaware; business address in Plano, Texas; industry Radiotelephone Communications (Form D, 2026-04-14).
| Report | Holder | Share |
|---|---|---|
| Schedule 13G/A, 2026-03-27 | The Vanguard Group | 0% |
| Schedule 13G, 2025-08-13 | Renaissance Technologies LLC | 5.13% |
| Schedule 13G, 2025-07-29 | The Vanguard Group | 5.58% |
Questions about who owns Spok Holdings, Inc
Who owns Spok Holdings, Inc?
On this page, one holder's latest ownership filing reports 5% or more of Spok Holdings, Inc: Renaissance Technologies LLC (5.13%, Schedule 13G, filed 2025-08-13).
When did Renaissance Technologies LLC buy into Spok Holdings, Inc?
The filings give report dates, not purchase dates. The earliest filing from Renaissance Technologies LLC on this page is the Schedule 13G, filed 2025-08-13, reporting 5.13%.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 3 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
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What the Full Report on Spok Holdings Inc covers
The Short Answer
Which Company This Is
What They Do, And How The Money Works
Who Runs It, And How To Reach Them
The Money: Funding, Valuation, Runway
Who Pays Them, And Who They Are Up Against
Warning Bells
Sources
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| Filed | Person | Role | Change | Effective |
|---|---|---|---|---|
| Form 8-K, 2026-04-14 | Michael W. Wallace | Chief Financial Officer | appointed | |
| Form 8-K, 2026-04-14 | Michael W. Wallace | Chief Operating Officer | appointed |
Which insiders own Spok Holdings, Inc shares?
Directors, officers and holders of 10% or more report their shares on Forms 3, 4 and 5. Each line is the latest such report, largest holding first.
- , a director: 1,152,871 shares (5.5% of shares outstanding), 53,188 held directly and 1,099,683 indirectly (Form 4, 2026-10-02).
- , the chief executive and president: 167,565 shares (0.80% of shares outstanding), held indirectly through a vincent depaul kelly,trustee of the vincent depaul kelly fifth amended and restated revocable trust (Form 4, 2026-05-12).
- , the chief operating officer: 74,034 shares (0.35% of shares outstanding) (Form 4, 2026-03-04).
- , a director: 48,776 shares (0.23% of shares outstanding) (Form 4, 2026-10-02).
- , a director: 41,385 shares (0.20% of shares outstanding) (Form 4, 2026-10-02).
Shares outstanding: 20,930,052 as of 2026-10-23, from the company's latest SEC cover page.
How much has Spok Holdings, Inc raised?
No fundraising or offering filing from Spok Holdings, Inc is on file with us.
Keep reading
More on Spok Holdings Inc and the records around it.
Spok Holdings Inc elsewhere on the record
- Leadership changes Apr 2026
Companies that share a holder
- Renaissance Technologies LLC also filed stake reports on 46 other companies: AMERICAN PUBLIC EDUCATION INC (Aug 2026), Bolt Biotherapeutics, Inc. (Aug 2026), Commercial Vehicle Group, Inc. (Aug 2026)
- The Vanguard Group also filed stake reports on 2384 other companies: BellRing Brands, Inc. (Sep 2026), CAL-MAINE FOODS INC (Sep 2026), FTAI Aviation Ltd. (Sep 2026)
Related pages
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