SCHEDULE 13D/A Filed 2026-06-04 Event 2026-06-02 SEC 0001123292-26-000806 →

Bitfury Top HoldCo B.V. → Cipher Digital Inc. CIFR

Stake: 14.60% Shares: 28,643,382 CUSIP: 17253J106 Class: Common Stock

Item 4 — Purpose of Transaction

Item 4 of the Schedule 13D is hereby amended and supplemented by adding the following: This Amendment No. 23 is being filed for purposes of disclosing the Bitfury Top HoldCo Forward Contract described in this Amendment No. 23. The information contained in Item 5(c) of this Amendment No. 23 with respect thereto is incorporated by reference herein.

Cross-References

Insider Activity (last 365d)

0 transactions

0 buys · 0 sales · 0 awards/exercises

Issuer Cluster

7 13D/G filings on this issuer

6 other filings besides this one

Filer Track Record

7 filings by this filer

6 other filings in the data moat

Short Interest · settle 2026-07-15

DTC 2.40

56,099,030 shares short · +3.9% vs prior

Institutional Consensus · 2025-12-31

Held by elite portfolio managers

1 holder · $49.87M

Point72 Asset Mgmt

Post-Filing Returns · since 2026-06-02 on CIFR

+1 day

-0.2%

+5 days

-7.6%

+30 days

-23.8%

+60 days

—

+90 days

—

+180 days

—

Anchor price 26.29 on closest trading day on/after 2026-06-02. Source: Yahoo Finance daily adj_close (split + dividend adjusted).

Other 13D/G Filings on Cipher Digital Inc.

Filed	Form	Filer	Stake	Shares
2026-05-18	SCHEDULE 13D/A	Bitfury Top HoldCo B.V.	—	30,443,382	view →
2026-05-13	SCHEDULE 13D/A	Bitfury Top HoldCo B.V.	—	30,443,382	view →
2025-09-17	SCHEDULE	Bitfury Top HoldCo B.V.	20.20%	79,442,259	view →
2025-08-11	SCHEDULE	Bitfury Top HoldCo B.V.	23.10%	90,942,259	view →
2024-11-12	SC	Bitfury Top HoldCo B.V.	—	—	view →
2024-02-26	SC	Bitfury Top HoldCo B.V.	—	—	view →

Other Filings by Bitfury Top HoldCo B.V.

Filed	Form	Issuer	Stake	Shares
2026-05-18	SCHEDULE 13D/A	Cipher Digital Inc. CIFR	—	30,443,382	view →
2026-05-13	SCHEDULE 13D/A	Cipher Digital Inc. CIFR	—	30,443,382	view →
2025-09-17	SCHEDULE	Cipher Mining Inc. CIFR	20.20%	79,442,259	view →
2025-08-11	SCHEDULE	Cipher Mining Inc. CIFR	23.10%	90,942,259	view →
2024-11-12	SC	Cipher Mining Inc. CIFR	—	—	view →
2024-02-26	SC	Cipher Mining Inc. CIFR	—	—	view →

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