Company: CIFRW
Filing Date: 2025-04-21
Form Type: DEF 14A
Source: 0001819989-25-000027
Chunk: 2

Company: Cipher Mining Inc.
Filing Date: 2025-04-21
Form: DEF 14A
Chunk 2
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 vote is important. Voting your shares will ensure the presence of a quorum at the Annual Meeting and will save us the expense of further solicitation. Please promptly vote your shares by following the instructions for voting on the Notice Regarding the Availability of Proxy Materials or, if you received a paper or electronic copy of our proxy materials, by completing, signing, dating and returning your proxy card or by Internet or telephone voting as described on your proxy card.

| By Order of the Board of Directors                        |
| William Iwaschuk                                          |
| Co-President, Chief Legal Officer and Corporate Secretary |

New York, New York

April 21, 2025

This Notice of Annual Meeting and Proxy Statement are first being distributed or made available, as the case may be, on or about April 21, 2025.

<div align='center'>Important Notice Regarding the Availability of Proxy Materials for the Stockholder Meeting to be Held on June 3, 2025:

The Notice of Meeting, Proxy Statement and our Annual Report are available free of charge at www.proxyvote.com.</div>

### TABLE OF CONTENTS
|                                                                                                                                               |     | Page |
| GENERAL INFORMATION ABOUT THE ANNUAL MEETING AND VOTING                                                                                       |     |    1 |
| When and where will the Annual Meeting be held?                                                                                               |     |    1 |
| What are the purposes of the Annual Meeting?                                                                                                  |     |    1 |
| Are there any matters to be voted on at the Annual Meeting that are not included in this Proxy Statement?                                     |     |    1 |
| What does it mean if I receive more than one Notice and Access Card or more than one set of proxy materials?                                  |     |    1 |
| Who is entitled to vote at the Annual Meeting?                                                                                                |     |    2 |
| What is the difference betweenbeinga “record holder” and holding shares in “street name”?                                                     |     |    2 |
| What do I do if my shares are held in “street name”?                                                                                          |     |    2 |
| How many shares must be present to hold the Annual Meeting?                                                                                   |     |    2 |
| What are “broker non-votes”?                                                                                                                  |     |    2 |
| What if a quorum is not present at the Annual Meeting?                                                                                        |     |    2 |
| How do I vote my shares without attending the Annual Meeting?                                                                                 |     |    3 |
|