| Date Filed | Type | Description |
| 10/10/2023 |
8-K
| Quarterly results |
| 08/16/2023 |
8-K
| Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements... |
| 07/27/2023 |
8-K
| Regulation FD Disclosure, Financial Statements and Exhibits Interactive Data |
| 07/27/2023 |
S-8
| Form S-8 - Securities to be offered to employees in employee benefit plans: |
| 07/27/2023 |
10-Q
| Quarterly Report for the period ended June 30, 2023 |
| 07/26/2023 |
8-K
| Quarterly results |
| 05/04/2023 |
8-K
| Quarterly results |
| 05/04/2023 |
10-Q
| Quarterly Report for the period ended March 31, 2023 |
| 02/22/2023 |
8-K
| Quarterly results |
| 02/14/2023 |
SC 13G/A
| Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend] |
| 02/13/2023 |
SC 13G/A
| Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend] |
| 02/10/2023 |
SC 13G/A
| DIMENSIONAL FUND ADVISORS LP reports a 5.4% stake in Spok Holdings Inc |
| 12/15/2022 |
8-K
| Quarterly results |
| 10/28/2022 |
8-K
| Quarterly results |
| 10/27/2022 |
10-Q
| Quarterly Report for the period ended September 30, 2022 |
| 10/26/2022 |
8-K
| Quarterly results |
| 08/01/2022 |
8-K
| Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements... |
| 07/28/2022 |
10-Q
| Quarterly Report for the period ended June 30, 2022 |
| 07/27/2022 |
8-K
| Quarterly results |
| 06/29/2022 |
SC 13D/A
| ACACIA RESEARCH CORP reports a 4.9% stake in Spok Holdings, Inc. |
| 06/15/2022 |
8-A12B/A
| Form 8-A12B/A - Registration of securities [Section 12(b)]: [Amend] |
| 06/15/2022 |
8-K
| Quarterly results |
| 06/01/2022 |
DEFA14A
| Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material: |
| 04/28/2022 |
8-K
| Quarterly results |
| 03/21/2022 |
8-K
| Entry into a Material Definitive Agreement, Regulation FD Disclosure, Financial Statements and Exhibits Inte... |
| 02/17/2022 |
10-K
| Annual Report for the period ended December 31, 2021 |
| 02/17/2022 |
8-K
| Quarterly results |
| 02/11/2022 |
SC 13G/A
| RENAISSANCE TECHNOLOGIES LLC reports a 6.2% stake in SPOK HOLDINGS, INC. |
| 02/10/2022 |
SC 13G/A
| VANGUARD GROUP INC reports a 3.8% stake in Spok Holdings Inc. |
| 02/08/2022 |
SC 13G/A
| DIMENSIONAL FUND ADVISORS LP reports a 6.7% stake in Spok Holdings Inc |
| 11/04/2021 |
10-Q
| Quarterly Report for the period ended September 30, 2021 |
| 11/03/2021 |
8-K
| Quarterly results |
| 09/20/2021 |
8-K
| Quarterly results |
| 09/16/2021 |
8-K
| Quarterly results |
|