Beneficial Ownership Report · SCHEDULE 13G
Cipher Digital Inc.
CIFRNASDAQEQUITYCurrent
Beneficial Ownership Report
Structured filing — SCHEDULE 13G
primary_doc.xml
Subject company
- Company
- CIPHER DIGITAL INC.
- Company CIK
- 0001819989
- Street
- 1 Vanderbilt Avenue
- Street (continued)
- Floor 54
- City
- New York
- State / country code
- NY
- Postal code
- 10017
Statement details
- Security class
- Common Stock, par value $0.001 per share (the "Shares")
- Event date
- 10/14/2026
- Rule designation
- Rule 13d-1(c)
Reporting person 1
- Name
- Citadel Securities GP LLC
- Citizenship / organization
- DE
- Reporting person type
- HC · OO
- Aggregate amount owned
- 22,862,668.00
- Percent of class
- 5.5
- Sole voting power
- 0.00
- Shared voting power
- 22,862,668.00
- Sole dispositive power
- 0.00
- Shared dispositive power
- 22,862,668.00
- Aggregate excludes certain shares
- N
- Comments
- The percentages reported in this Schedule 13G are based upon 415,030,722 Shares outstanding as of August 3, 2026 (according to the issuer's Form 10-Q as filed with the Securities and Exchange Commission on August 4, 2026). Except as described in the preceding sentence, all Shares for the holdings of the reporting persons reported in this Schedule 13G are as of the opening of the market on October 21, 2026.
Reporting person 2
- Name
- Citadel Securities LLC
- Citizenship / organization
- DE
- Reporting person type
- BD · OO
- Aggregate amount owned
- 17,951,304.00
- Percent of class
- 4.3
- Sole voting power
- 0.00
- Shared voting power
- 17,951,304.00
- Sole dispositive power
- 0.00
- Shared dispositive power
- 17,951,304.00
- Aggregate excludes certain shares
- N
Reporting person 3
- Name
- Citadel Securities Group LP
- Citizenship / organization
- DE
- Reporting person type
- HC · PN
- Aggregate amount owned
- 22,862,668.00
- Percent of class
- 5.5
- Sole voting power
- 0.00
- Shared voting power
- 22,862,668.00
- Sole dispositive power
- 0.00
- Shared dispositive power
- 22,862,668.00
- Aggregate excludes certain shares
- N
Reporting person 4
- Name
- Citadel Advisors LLC
- Citizenship / organization
- DE
- Reporting person type
- IA · HC · OO
- Aggregate amount owned
- 49,582.00
- Percent of class
- 0.0
- Sole voting power
- 0.00
- Shared voting power
- 49,582.00
- Sole dispositive power
- 0.00
- Shared dispositive power
- 49,582.00
- Aggregate excludes certain shares
- N
Reporting person 5
- Name
- Citadel Advisors Holdings LP
- Citizenship / organization
- DE
- Reporting person type
- HC · PN
- Aggregate amount owned
- 49,582.00
- Percent of class
- 0.0
- Sole voting power
- 0.00
- Shared voting power
- 49,582.00
- Sole dispositive power
- 0.00
- Shared dispositive power
- 49,582.00
- Aggregate excludes certain shares
- N
Reporting person 6
- Name
- Citadel GP LLC
- Citizenship / organization
- DE
- Reporting person type
- HC · OO
- Aggregate amount owned
- 49,582.00
- Percent of class
- 0.0
- Sole voting power
- 0.00
- Shared voting power
- 49,582.00
- Sole dispositive power
- 0.00
- Shared dispositive power
- 49,582.00
- Aggregate excludes certain shares
- N
Reporting person 7
- Name
- Kenneth Griffin
- Citizenship / organization
- X1
- Reporting person type
- HC · IN
- Aggregate amount owned
- 22,912,250.00
- Percent of class
- 5.5
- Sole voting power
- 0.00
- Shared voting power
- 22,912,250.00
- Sole dispositive power
- 0.00
- Shared dispositive power
- 22,912,250.00
- Aggregate excludes certain shares
- N
Item 1
Issuer
CIPHER DIGITAL INC.
Principal executive office address
1 Vanderbilt Avenue, Floor 54, New York, NY 10017
Item 2
Citizenship
Each of CSGP, Citadel Securities, Citadel Advisors, and CGP is organized as a limited liability company under the laws of the State of Delaware. Each of CALC4 and CAH is organized as a limited partnership under the laws of the State of Delaware. Mr. Griffin is a U.S. citizen.
Filing person
This Schedule 13G is being jointly filed by Citadel Securities GP LLC ("CSGP"), Citadel Securities LLC ("Citadel Securities"), Citadel Securities Group LP ("CALC4"), Citadel Advisors LLC ("Citadel Advisors"), Citadel Advisors Holdings LP ("CAH"), Citadel GP LLC ("CGP"), and Mr. Kenneth Griffin (collectively with CSGP, Citadel Securities, CALC4, Citadel Advisors, CAH, and CGP, the "Reporting Persons") with respect to the Shares of the above-named issuer held of record by Citadel Securities, Citadel Multi-Asset Master Fund Ltd., a Cayman Islands company ("CMAM"), Citadel Securities Principal Strategies LLC, a Delaware limited liability company ("CSP"), and CRBU Holdings LLC, a Delaware limited liability company ("CRBH"). Such Shares may include other instruments, exercisable for or convertible into Shares. CALC4 is the non-member manager of Citadel Securities, CSP and CRBH. CSGP is the general partner of CALC4. Citadel Advisors is the portfolio manager for CMAM. CAH is the sole member of Citadel Advisors. CGP is the general partner of CAH. Mr. Griffin is the President and Chief Executive Officer of CGP, and owns a controlling interest in CGP and CSGP.
Principal business or residence address
The address of each of the Reporting Persons is 830 Brickell Plaza, Miami, Florida 33131.
Item 3
Not applicable indication
Y
Item 4
Percent of class
1. The number of Shares that Citadel Securities LLC may be deemed to beneficially own constitutes 4.3% of the Shares outstanding. 2. The number of Shares that each of Citadel Securities Group LP and Citadel Securities GP LLC may be deemed to beneficially own constitutes 5.5% of the Shares outstanding. 3. The number of Shares that each of Citadel Advisors LLC, Citadel Advisors Holdings LP and Citadel GP LLC may be deemed to beneficially own constitutes 0.0% of the Shares outstanding. 4. The number of Shares that Mr. Griffin may be deemed to beneficially own constitutes 5.5% of the Shares outstanding.
Amount beneficially owned
1. Citadel Securities LLC may be deemed to beneficially own 17,951,304 Shares. 2. Each of Citadel Securities Group LP and Citadel Securities GP LLC may be deemed to beneficially own 22,862,668 Shares. 3. Each of Citadel Advisors LLC, Citadel Advisors Holdings LP and Citadel GP LLC may be deemed to beneficially own 49,582 Shares 4. Mr. Griffin may be deemed to beneficially own 22,912,250 Shares.
Sole voting power
1. Citadel Securities LLC: 0 2. Each of Citadel Securities Group LP and Citadel Securities GP LLC: 0 3. Each of Citadel Advisors LLC, Citadel Advisors Holdings LP and Citadel GP LLC: 0 4. Mr. Griffin: 0
Shared voting power
1. Citadel Securities LLC: 17,951,304 2. Each of Citadel Securities Group LP and Citadel Securities GP LLC: 22,862,668 3. Each of Citadel Advisors LLC, Citadel Advisors Holdings LP and Citadel GP LLC: 49,582 4. Mr. Griffin: 22,912,250
Sole dispositive power
1. Citadel Securities LLC: 0 2. Each of Citadel Securities Group LP and Citadel Securities GP LLC: 0 3. Each of Citadel Advisors LLC, Citadel Advisors Holdings LP and Citadel GP LLC: 0 4. Mr. Griffin: 0
Shared dispositive power
1. Citadel Securities LLC: 17,951,304 2. Each of Citadel Securities Group LP and Citadel Securities GP LLC: 22,862,668 3. Each of Citadel Advisors LLC, Citadel Advisors Holdings LP and Citadel GP LLC: 49,582 4. Mr. Griffin: 22,912,250
Item 5
Not applicable indication
Y
Item 6
Not applicable indication
Y
Item 7
Not applicable indication
Y
Item 8
Not applicable indication
Y
Item 9
Not applicable indication
Y
Item 10
Not applicable indication
N
Certifications
By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.
Exhibits
Exhibit 99.1 - Joint Filing Agreement
Signature comments
* Seth Levy is signing on behalf of Kenneth Griffin as attorney-in-fact pursuant to a power of attorney previously filed with the Securities and Exchange Commission, and hereby incorporated by reference herein. The power of attorney was filed as an attachment to a filing by Citadel Advisors LLC on Schedule 13G for Allakos Inc. on October 13, 2023.
Signature 1
- Reporting person
- Citadel Securities GP LLC
- Signed
- /s/ Seth Levy
- Title
- Seth Levy, Authorized Signatory
- Date
- 10/21/2026
Signature 2
- Reporting person
- Citadel Securities LLC
- Signed
- /s/ Seth Levy
- Title
- Seth Levy, Authorized Signatory
- Date
- 10/21/2026
Signature 3
- Reporting person
- Citadel Securities Group LP
- Signed
- /s/ Seth Levy
- Title
- Seth Levy, Authorized Signatory
- Date
- 10/21/2026
Signature 4
- Reporting person
- Citadel Advisors LLC
- Signed
- /s/ Seth Levy
- Title
- Seth Levy, Authorized Signatory
- Date
- 10/21/2026
Signature 5
- Reporting person
- Citadel Advisors Holdings LP
- Signed
- /s/ Seth Levy
- Title
- Seth Levy, Authorized Signatory
- Date
- 10/21/2026
Signature 6
- Reporting person
- Citadel GP LLC
- Signed
- /s/ Seth Levy
- Title
- Seth Levy, Authorized Signatory
- Date
- 10/21/2026
Signature 7
- Reporting person
- Kenneth Griffin
- Signed
- /s/ Seth Levy
- Title
- Seth Levy, attorney-in-fact*
- Date
- 10/21/2026
Filed exhibits
- EXHIBIT 99.1 ↗tm2628058d1_ex99-1.htm
Company context
Cipher develops and operates industrial-scale data centers engineered for next-generation computing at the highest standards of innovation, precision, and excellence. The Company brings together deep expertise across power sourcing, construction, engineering, operations, real estate, and technology to deliver high-quality data centers purpose built for HPC workloads. By partnering with premier tenants, Cipher seeks to meet the growing demand for industrial-scale data center capacity and become a leading HPC development platform that is built for hyperscale.
Current securities
Recent company filings
- 10-Q filingNov 2, 2026
- Results of Operations and Financial Condition · Regulation FD DisclosureNov 2, 2026
- SCHEDULE 13G - filed by JANE STREET GROUP, LLC regarding Cipher Digital Inc.Oct 21, 2026
- SCHEDULE 13G/A - filed by JANE STREET GROUP, LLC regarding Cipher Digital Inc.Oct 21, 2026
- Entry into a Material Definitive Agreement · Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement · Unregistered Sales of Equity Securities · Regulation FD DisclosureOct 16, 2026