Spok Holdings Inc
Ownership
Ownership Structure
Who owns Spok Holdings Inc (SPOK)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 87.0% of the shares are freely tradable; institutional investors hold 56.3%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 8.01 | 1,676,227 | -6.9 | 03/31/2026 |
| Renaissance Technologies Corp | 6.03 | 1,261,579 | +1.2 | 03/31/2026 |
| Vanguard Capital Management, LLC | 4.11 | 859,530 | +0.0 | 03/31/2026 |
| Dimensional Fund Advisors, Inc. | 3.43 | 717,616 | +0.2 | 06/30/2026 |
| Geode Capital Management, LLC | 2.61 | 545,718 | -8.8 | 03/31/2026 |
| State Street Corp | 2.21 | 461,790 | +3.3 | 03/31/2026 |
| HighTower Advisors, LLC | 1.83 | 381,815 | -0.1 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard MStar Total Stk Mkt Idx Invest | 2.94 | 615,117 | +0.0 | 07/31/2026 |
| iShares Russell 2000 ETF | 2.38 | 497,905 | -0.6 | 08/31/2026 |
| CS McKee Micro Cap Value | 1.63 | 341,955 | +0.0 | 06/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Cournoyer Christine | Director | 16,261 | 169,114 $ | Aug 10, 2026 | direct |
| Woods-Keisling Sharon | Corporate Secretary, Treasurer | 6,036 | 62,774 $ | Aug 10, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Aug 10, 2026 | Woods-Keisling Sharon | Corporate Secretary, Treasurer | Sell | 20,000 | 11.30 | 225,940 |
| Aug 10, 2026 | Cournoyer Christine | Director | Sell | 8,320 | 11.28 | 93,870 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: September 17, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.