X0508 4 2023-12-19 0 0001353283 SPLUNK INC SPLK 0001969301 Casey Tom C/O SPLUNK INC. 250 BRANNAN STREET SAN FRANCISCO CA 94107 0 1 0 0 SVP, Products & Technology 0 Common Stock 2023-12-19 4 A 0 10758 0.00 A 130872 D Common Stock 2023-12-19 4 A 0 12783 0.00 A 143655 D Common Stock 2023-12-19 4 F 0 47915 151.97 D 95740 D Represents performance-based restricted share units granted to the reporting person on September 20, 2022 and that were scheduled to vest or be forfeited based on the attainment of performance-based vesting conditions during the performance period ending on February 29, 2024. In connection with that certain Agreement and Plan of Merger (the "Merger Agreement"), by and among the Issuer, Cisco Systems, Inc., a Delaware corporation ("Parent"), and Spirit Merger Corp., a Delaware corporation and wholly owned subsidiary of Parent, the Talent & Compensation Committee of the Board of Directors of the Issuer (the "Committee") accelerated the vesting and settlement of such restricted share units. The reporting person has signed a 280G Mitigation Acknowledgment as described in the Issuer's Current Report on Form 8-K filed on December 21, 2023, and the accelerated restricted share units are subject to certain forfeiture conditions. Represents performance-based restricted share units granted to the reporting person on March 16, 2023 and that were scheduled to vest or be forfeited based on the attainment of performance-based vesting conditions during the performance period ending on February 28, 2025. In connection with that certain Agreement and Plan of Merger (the "Merger Agreement"), by and among the Issuer, Cisco Systems, Inc., a Delaware corporation ("Parent"), and Spirit Merger Corp., a Delaware corporation and wholly owned subsidiary of Parent, the Talent & Compensation Committee of the Board of Directors of the Issuer (the "Committee") accelerated the vesting and settlement of such restricted share units. The reporting person has signed a 280G Mitigation Acknowledgment as described in the Issuer's Current Report on Form 8-K filed on December 21, 2023, and the accelerated restricted share units are subject to certain forfeiture conditions. /s/ Steve Dean, by power of attorney 2023-12-21