Company: CIFRW
Filing Date: 2025-10-06
Form Type: 8-K
Source: 0001819989-25-000095
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Company: Cipher Mining Inc.
Filing Date: 2025-10-06
Form: 8-K
Item: Item 5.02
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Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

Resignation of Edward Farrell as Chief Financial Officer

On October 6, 2025, Edward Farrell, Chief Financial Officer of Cipher Mining Inc. (the “ Company” or “ Cipher”), notified the Company that he has decided to retire, effective October 14, 2025. Until that date, Mr. Farrell will remain Cipher’s Chief Financial Officer, and he will continue to serve in an advisory capacity thereafter through April 17, 2026 (the “ Consulting Period”) to support continuity and a smooth transition.

On October 6, 2025, Mr. Farrell and Cipher entered into an advisory agreement (the “ Advisory Agreement”) governing the terms of his remaining period of service to Cipher. In exchange for advisory services and a general release of all claims in favor of Cipher, during the Consulting Period, Mr. Farrell will continue to receive his base salary at his current rate and continued health insurance coverage at the sole expense of the Company, and his outstanding equity awards will continue to vest in accordance with their terms. Any unvested restricted stock units or performance-based restricted stock units that have been earned based on the Company’s actual performance will accelerate and become fully vested on the last day of the Consulting Period.

This description of the Advisory Agreement is qualified in its entirety by reference to the full text of the Advisory Agreement. A copy of the Advisory Agreement is expected to be filed as an exhibit to Cipher’s Annual Report on Form 10-K for the fiscal year ending December 31, 2025.

Appointment of Gregory Mumford as Chief Financial Officer

On October 6, 2025, Cipher announced the appointment of Gregory Mumford as Cipher’s Chief Financial Officer, effective October 14, 2025. Mr. Mumford will succeed Mr. Farrell following Mr. Farrell’s retirement.

Mr. Mumford, age 32, has over a decade of experience in financial services, credit, and capital markets, including serving as Director and a leader in the Digital Assets & Infrastructure group in Keefe, Bruyette & Woods’ Investment Banking division from December 2019 through September 2025. During his tenure at KBW and its affiliated entities, he advised on a broad range of M& A and capital markets activity with a focus on digital infrastructure and industrials. Mr. Mumford was recognized not only for his contributions to his team and clients,