# EDGAR Filing Document

**Accession Number:** 0001819989
**File Stem:** 0000950103-25-015181
**Filing Date:** 2025-11
**Character Count:** 32649
**Document Hash:** 1800bb30015e98297b60ddf53c8fbddb
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000950103-25-015181.hdr.sgml**: 20251124

**ACCESSION NUMBER**: 0000950103-25-015181

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 14

**CONFORMED PERIOD OF REPORT**: 20251124

**ITEM INFORMATION**: Entry into a Material Definitive Agreement

**ITEM INFORMATION**: Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

**ITEM INFORMATION**: Financial Statements and Exhibits

**FILED AS OF DATE**: 20251124

**DATE AS OF CHANGE**: 20251124

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Cipher Mining Inc.
- **CENTRAL INDEX KEY:** 0001819989
- **STANDARD INDUSTRIAL CLASSIFICATION:** FINANCE SERVICES [6199]
- **ORGANIZATION NAME:** 09 Crypto Assets
- **EIN:** 851614529
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-39625
- **FILM NUMBER:** 251513998

**BUSINESS ADDRESS:**
- **STREET 1:** 1 VANDERBILT AVENUE
- **STREET 2:** FLOOR 54
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10017
- **BUSINESS PHONE:** 332-262-2300

**MAIL ADDRESS:**
- **STREET 1:** 1 VANDERBILT AVENUE
- **STREET 2:** FLOOR 54
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10017

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** GOOD WORKS ACQUISITION CORP.
- **DATE OF NAME CHANGE:** 20200803

?xml version='1.0' encoding='ASCII'?

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**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**FORM 8-K**

**CURRENT REPORT**

**Pursuant to Section 13 or 15(d)**

**of the Securities Exchange Act of 1934**

**Date of Report (Date of earliest event reported)**: **November 24, 2025**

**CIPHER MINING INC.**

(Exact name of registrant as specified in its charter)

---

| | | |
|:---|:---|:---|
| **Delaware** | **001-39625** | **85-1614529** |
| (State or other jurisdiction of<br> incorporation) | (Commission File Number) | (IRS Employer Identification No.) |

---

**1 Vanderbilt Avenue**

**Floor 54**

**New York, New York 10017**

(Address of principal executive offices) (Zip Code)

**(332) 262-2300** (Registrant's telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (*see* General Instruction A.2. below):

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

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| | | |
|:---|:---|:---|
| Title of each class | Trading Symbol(s) | Name of each exchange on which<br> registered |
| Common stock, $0.001 par value per share | CIFR | The Nasdaq Stock Market LLC |
| Warrants, each whole warrant exercisable for one share of Common Stock at an exercise price of $11.50 per whole share | CIFRW | The Nasdaq Stock Market LLC |

---

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

------

**Item 1.01. Entry into a Material Definitive Agreement.**

***Additional Senior Secured Notes Offering***

*General*

On November 24, 2025, Cipher Compute LLC ("Cipher Compute" or the "Issuer"), a wholly-owned indirect subsidiary of Cipher Mining Inc. ("Cipher" or the "Company"), completed its previously announced private offering of $333,000,000 aggregate principal amount of additional 7.125% Senior Secured Notes due 2030 (the "New Notes"). The New Notes were sold under a purchase agreement, dated as of November 20, 2025, by and among Cipher Compute, Cipher Barber Lake LLC (the "Subsidiary Guarantor"), a wholly-owned subsidiary of Cipher Compute, and Morgan Stanley & Co. LLC, as the sole initial purchaser, for resale to persons reasonably believed to be qualified institutional buyers in reliance on Rule 144A under the Securities Act of 1933, as amended (the "Securities Act"), and to non-U.S. persons outside of the United States pursuant to Regulation S under the Securities Act (the "Offering"). The New Notes are part of the same series as the $1,400,000,000 aggregate principal amount of 7.125% senior secured notes due 2030 (the "Initial Notes" and together with the New Notes, the "Notes") issued by the Issuer pursuant to the indenture, dated as of November 13, 2025 (the "Existing Indenture"), by and among the Issuer, Cipher Songbird LLC ("Cipher Songbird"), the Subsidiary Guarantor and Wilmington Trust, National Association, as trustee and collateral agent ("Trustee"). The New Notes have identical terms and conditions (other than the original issue date and issue price) as the Initial Notes.

Cipher Compute intends to use the net proceeds from the Offering to finance a portion of the construction costs associated with additional facilities within its Barber Lake Facility, a high-performance computing data center near Colorado City, Texas.

The New Notes were issued at a price equal to 100.250% of their principal amount, plus pre-issuance accrued interest from and including November 13, 2025, pursuant to a supplemental indenture to the Existing Indenture, dated as of November 24, 2025 (the "Supplemental Indenture" and together with the Existing Indenture, the "Indenture"), by and among the Issuer, the Subsidiary Guarantor, Cipher Songbird and the Trustee. The Supplemental Indenture also amends certain provisions of the Existing Indenture in connection with the issuance of the New Notes, including debt service reserve requirements and the amount of scheduled amortization payments.

*Maturity and Interest Payments*

The Notes are senior secured obligations of Cipher Compute and bear interest at a rate of 7.125% per year payable semiannually in arrears on May 15 and November 15 of each year, beginning on May 15, 2026. The Notes will mature on November 15, 2030, unless earlier redeemed or repurchased in accordance with their terms.

*Amortization of Principal*

The principal amount of the Notes will amortize on a semi-annual basis on May 15 and November 15 of each year in amounts based on schedules in the Indenture. No amortization will be payable prior to the completion of the Barber Lake Facility. Required amortization shall be subject to adjustment in case of partial redemption or repurchase.

*Redemption*

On or after November 15, 2027, the Issuer may redeem the Notes at its option, in whole at any time or in part from time to time, at the redemption prices set forth in the Indenture.

Prior to November 15, 2027, the Issuer may redeem the Notes at its option, in whole at any time or in part from time to time, at a redemption price equal to 100% of the principal amount of the Notes redeemed, plus a "make-whole" premium and accrued and unpaid interest, if any. In addition, prior to November 15, 2027, the Issuer may redeem up to 40% of the aggregate principal amount of the Notes in an amount not to exceed the amount of the proceeds of certain equity offerings, at the redemption price set forth in the Indenture, plus accrued and unpaid interest.

*Certain Covenants*

The Indenture limits the ability of the Issuer and the Sudsidiary Guarantor to, among other things: (i) incur or guarantee certain additional indebtedness; (ii) pay dividends or distributions on, or redeem or repurchase, capital stock and make other restricted payments; (iii) make certain investments; (iv) create or incur liens; (v) consummate certain asset sales; (vi) enter into sale and leaseback transactions; (vii) hold assets or conduct operations unrelated to the operation of the Barber Lake Facility; (viii) engage in certain transactions with its affiliates; and (ix) merge, consolidate or transfer or sell all or substantially all of its assets.

These covenants are subject to a number of important qualifications and exceptions. Additionally, upon the occurrence of specified change of control events, Cipher Compute must offer to repurchase the Notes at 101% of the principal amount, plus accrued and unpaid interest, if any, to, but excluding, the purchase date. In addition, on or prior to May 15 and November 15 of each year, the Issuer may be required to make an offer to all holders of Notes to purchase Notes in an aggregate principal amount equal to 50% of Excess Cash Flows (as such term is defined in the Indenture) at a price in cash equal to 100% of the principal amount of the Notes to be repurchased, plus accrued and unpaid interest, if any, to, but excluding, the purchase date. The Indenture also provides for customary events of default.

The foregoing description of the Indenture and the Notes does not purport to be complete and is qualified in its entirety by reference to the full text of the Indenture (and the form of note included therein), copies of which are filed with this Current Report on Form 8-K as Exhibits 4.1, 4.2 and 4.3 hereto and are hereby incorporated herein by reference.

*Completion Guarantee*

Pursuant to an amended and restated completion guarantee dated as of November 20, 2024 (the "A&R Completion Guarantee"), which amends that certain guarantee entered into in connection with the issuance of the Initial Notes, Cipher has agreed to fund the Issuer as necessary to ensure the timely completion of the Barber Lake Facility (including the additional facilities) in the event that the proceeds of the Notes and other available funds are insufficient to do so.

**Item 2.03. Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant.**

The information set forth in Item 1.01 of this Current Report on Form 8-K is incorporated herein by reference.

**Cautionary Note Regarding Forward-Looking Statements.**

This Current Report on Form 8-K contains certain forward-looking statements within the meaning of the federal securities laws of the United States. The Company intends such forward-looking statements to be covered by the safe harbor provisions for forward-looking statements contained in the Private Securities Litigation Reform Act of 1995 and includes this statement for purposes of complying with these safe harbor provisions. Any statements made in this Current Report on Form 8-K that are not statements of historical fact, such as statements regarding the anticipated use of any proceeds from the offering, are forward-looking statements and should be evaluated as such. These forward-looking statements generally are identified by the words "may," "will," "should," "expects," "plans," "anticipates," "could," "seeks," "intends," "targets," "projects," "contemplates," "believes," "estimates," "strategy," "future," "forecasts," "opportunity," "predicts," "potential," "would," "will likely result," "continue," and similar expressions (including the negative versions of such words or expressions).

These forward-looking statements are based upon estimates and assumptions that, while considered reasonable by Cipher and its management, are inherently uncertain. Such forward-looking statements are subject to risks, uncertainties, and other factors that could cause actual results to differ materially from those expressed or implied by such forward-looking statements. New risks and uncertainties may emerge from time to time, and it is not possible to predict all risks and uncertainties. Many factors could cause actual future events to differ materially from the forward-looking statements in this Current Report on Form 8-K, including but not limited to: volatility in the price of Cipher's securities due to a variety of factors, including changes in the competitive and regulated industry in which Cipher operates, Cipher's evolving business model and strategy and efforts it may make to modify aspects of its business model or engage in various strategic initiatives, variations in performance across competitors, changes in laws and regulations affecting Cipher's business, and the ability to implement business plans, forecasts, and other expectations and to identify and realize additional opportunities. The foregoing list of factors is not exhaustive. Potential investors, stockholders and other readers are cautioned to carefully consider the foregoing factors and the other risks and uncertainties described in the "Risk Factors" section of Cipher's Annual Report on Form 10-K for the fiscal year ended December 31, 2024 filed with the Securities and Exchange Commission ("SEC") on February 25, 2025, Cipher's Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2025 filed with the SEC on August 7, 2025, Cipher's Quarterly Report on Form 10-Q for the quarterly period ended September 30, 2025 filed with the SEC on November 3, 2025, and in Cipher's subsequent filings with the SEC. These filings identify and address other important risks and uncertainties that could cause actual events and results to differ materially from those contained in the forward-looking statements. Forward-looking statements speak only as of the date they are made. Readers are cautioned not to put undue reliance on forward-looking statements, and Cipher assumes no obligation and, except as required by law, does not intend to update or revise these forward-looking statements, whether as a result of new information, future events, or otherwise.

**Item 9.01. Financial Statements and Exhibits.**

(d) Exhibits

---

| | |
|:---|:---|
| **Exhibit** <br> **No.** | **Description** |
| [4.1](dp237816_ex0401.htm) | [Supplemental Indenture, dated as of November 24, 2025, among Cipher Compute LLC, Cipher Barber Lake LLC, Cipher Songbird LLC, and Wilmington Trust, National Association, as trustee, relating to the 7.125% senior secured notes.](dp237816_ex0401.htm) |
| [4.2](https://www.sec.gov/Archives/edgar/data/1819989/000095010325014692/dp237330_0401.htm) | [Indenture, dated as of November 13, 2025, among Cipher Compute LLC, Cipher Barber Lake LLC, Cipher Songbird LLC, and Wilmington Trust, National Association, as trustee, relating to the 7.125% senior secured notes](https://www.sec.gov/Archives/edgar/data/1819989/000095010325014692/dp237330_0401.htm) |
| [4.3](https://www.sec.gov/Archives/edgar/data/1819989/000095010325014692/dp237330_0401.htm) | [Form of Note representing the 7.125% Senior Secured Notes due 2030 (included as Exhibit A to Exhibit 4.2)](https://www.sec.gov/Archives/edgar/data/1819989/000095010325014692/dp237330_0401.htm) |
| 104 | Cover Page Interactive Data File (embedded within the Inline XBRL document). |

---

**SIGNATURES**

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

---

| | | |
|:---|:---|:---|
| Date: November 24, 2025 | **CIPHER MINING INC.** | **CIPHER MINING INC.** |
|  | By: | /s/ Tyler Page |
|  | Name: | Tyler Page |
|  | Title: | Chief Executive Officer |

---

## Exhibit 4.1

**Exhibit 4.1**

***Execution Version***

FIRST SUPPLEMENTAL INDENTURE

FIRST SUPPLEMENTAL INDENTURE (this "*Supplemental Indenture*"), dated as of November 24, 2025, among Cipher Compute LLC, a Delaware limited liability company (the "*Issuer*"), Cipher Songbird LLC, a Delaware limited liability company, Cipher Barber Lake LLC, a Delaware limited liability company (the "*Subsidiary Guarantor*"), and Wilmington Trust, National Association, as Trustee (in such capacity, the "*Trustee*") and Collateral Agent (in such capacity, the "*Collateral Agent*") under the Indenture referred to below.

W I T N E S S E T H

WHEREAS, the Issuer has heretofore executed and delivered to the Trustee and the Collateral Agent an indenture (as amended, supplemented or otherwise modified from time to time, the "*Indenture*"), dated as of November 13, 2025, pursuant to which the Issuer issued $1,400,000,000 aggregate principal amount of the Issuer's 7.125% Senior Secured Notes due 2030 (the "*Initial Notes*");

WHEREAS, Section 2.07 of the Indenture permits and provides for the issuance of Additional Notes in accordance with and subject to compliance with the provisions of the Indenture, and such Additional Notes shall be consolidated with and form a single class with the Initial Notes and shall have the same terms as the Initial Notes (except for any differences in the issue price, the issue date and the interest accrued, if any);

WHEREAS, the Issuer desires and has requested that the Trustee join it in the execution and delivery of this Supplemental Indenture in connection with the issuance by the Issuer, pursuant to Section 2.07 of the Indenture, of an additional $333,000,000 aggregate principal amount of 7.125% Senior Secured Notes due 2030 (the "*New Notes*");

WHEREAS, Section 9.01(8) of the Indenture provides that the Issuer may from time to time amend the Indenture without the consent of any Holder to provide for the issuance of Additional Notes in accordance with the Indenture;

WHEREAS, Section 9.01(9) of the Indenture provides that the Issuer may from time to time make amendments that increase the amount of any Installment payable with respect to the Notes in connection with the incurrence of Additional Project Debt in the form of Additional Notes, including any amendment to the terms of any Notes Documents in accordance with Article 14 of the Indenture;

WHEREAS, Section 9.01(10) of the Indenture provides that the Issuer may from time to time amend any Note Document in connection with any Additional Project that is financed with Additional Project Debt pursuant to clause (11) of Section 4.04(a) of the Indenture, including any such changes reasonably necessary or appropriate to cause the Additional Project Debt Conditions to be satisfied in connection with the incurrence of such Additional Project Debt; provided, however, that the terms of any amended or supplemented Notes Document shall, taken as a whole, not be materially less favorable to the Holders of the Notes relative to the terms of

such Notes Document prior to such change (as determined in good faith by the Issuer);

WHEREAS, the Issuer has provided to the Trustee an Opinion of Counsel and an Officer's Certificate required by Sections 2.02. 9.05 and 13.02 of the Indenture;

WHEREAS, all conditions and requirements necessary to issue the New Notes, to amend the Indenture and to make this Supplemental Indenture a valid, binding, and legal instrument in accordance with the terms of the Indenture have been performed and fulfilled and the execution and delivery hereof have been in all respects duly authorized; and

WHEREAS, pursuant to Section 2.0.2, 9.01(8), 9.01(9), 9.01(10) and Section 9.05 of the Indenture, the Trustee and the Collateral Agent are authorized to execute and deliver this Supplemental Indenture and to authenticate the New Notes.

NOW, THEREFORE, in consideration of the foregoing and for other good and valuable consideration, the receipt of which is hereby acknowledged, the Issuer, the Trustee and the Collateral Agent mutually covenant and agree for the equal and ratable benefit of the Holders as follows:

1. CAPITALIZED TERMS. Capitalized terms used herein without definition shall have the
meanings assigned to them in the Indenture.

2. THE ADDITIONAL NOTES. Pursuant to Section 2.07(a) and 9.01(8) of the Indenture,
the Issuer shall issue the New Notes, which are Additional Notes and shall (i) be consolidated with and form a single class with the Initial
Notes, and (ii) have the same terms as the Initial Notes (except for any differences in the issue price, the issue date and the interest
accrued, if any), as follows:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) *General.* The New Notes shall be evidenced by one or more Global Notes substantially
in the form of the Notes attached as Exhibit A to the Indenture. For all purposes under the Indenture, the term "Notes" shall
include the New Notes.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) *Authentication and Delivery of Additional Notes*. On the date hereof, $333,000,000
aggregate principal amount of New Notes shall be delivered to the Trustee for authentication and delivery. Such New Notes are being issued
in accordance with Section 2.02 of the Indenture.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c) *Issue Date; First Interest Payment.* The New Notes shall be issued on November
24, 2025, and shall accrue interest from and including November 13, 2025. The first interest payment date in respect of the New Notes
shall be May 15, 2026.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d) *CUSIP and ISIN.* The CUSIP and ISIN numbers for the New Notes shall be as
follows:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) New Notes Rule 144A Global Note: 17253N AA5 and US17253NAA54, respectively; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) New Notes Regulation S Temporary Global Note: U1719N AB2 and USU1719NAB20, respectively.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(e) *Regulation S Temporary Global Notes and Regulation S Permanent Global Notes*.
Pursuant to Section 2.01(b)(4) of the Indenture, following the termination of the applicable Restricted Period, the Regulation S Temporary
Global Note Legend shall be deemed removed from the Regulation S Temporary Global Note for the New Notes, following which temporary beneficial
interests in the Regulation S Temporary Global Note for the New Notes shall automatically become beneficial interests in the Regulation
S Permanent Global Note for the Notes, pursuant to the Applicable Procedures. The Issuer may take such further actions as may be reasonably
necessary or appropriate (as determined by the Issuer) to cause the beneficial interests in the form of the Regulation S Temporary Global
Note for the New Notes to be exchanged for beneficial interests in the Regulation S Permanent Global Note for the Initial Notes pursuant
to the Applicable Procedures. The aggregate principal amount of any Regulation S Temporary Global Notes and any Regulation S Permanent
Global Notes may from time to time be increased or decreased by adjustments made on the records of the Trustee and/or the Paying Agent
and the Depositary or their respective nominees, as the case may be, in connection with the foregoing.

3. AMENDMENTS TO THE INDENTURE.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) *Amendments to Section 1.01*.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) Pursuant to Section 9.01(10) of the Indenture, the Issuer amends and restates the following
definition in its entirety as follows:

"*Debt Service Reserve Required Amount*" means:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) on the New Notes Issue Date, $260.0 million, representing the estimated sum of the (i) first two scheduled interest payments in respect of the Notes after the Issue Date, and (ii) the third scheduled interest payment and first scheduled amortization payment in respect of the Notes;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) on any date thereafter during the Construction Period, an amount equal to the sum of (i) $140.0 million (plus a proportionate amount in connection with any Additional Notes other than the New Notes) (the "Minimum Debt Service Reserve Required Amount ") plus (ii) the sum of the amount of scheduled interest (but not principal) due on the next two Payment Dates immediately following such date, minus (iii) the lesser of (x) the amount of interest that has been paid in respect of the Notes and any Additional Notes since the Issue Date and prior to such date and (y) an amount that would cause the amount deposited in the Debt Service Reserve Account to equal the Minimum Debt Service Reserve Required Amount; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c) on any date of determination after the Construction Period, an amount equal to the Minimum Debt Service Reserve Required Amount.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) Pursuant to Section 9.01(10) of the Indenture, the Issuer amends the Indenture to add
the following definition:

"*New Notes Issue Date*" means November 24, 2025.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) *Amendment to Section 14.03(a)*. Pursuant to Section 9.01(9) of the Indenture,
the Issuer amends and restates the Payment Schedule set forth in Section 14.03(a) in its entirety as follows:

---

| | |
|:---|:---|
| **Amortization Measurement Period** | **Total Amortization** |
| First three months following the Phase I Commencement Date (as defined in the Datacenter Lease) (the "<u>Initial Amortization Measurement Period</u>") | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; $37793000.00 |
| Year 1 following Initial Amortization Measurement Period | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; $152305000.00 |
| Year 2 following Initial Amortization Measurement Period | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; $156874000.00 |
| Year 3 following Initial Amortization Measurement Period | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; $161580000.00 |
| Year 4 following Initial Amortization Measurement Period | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; $166427000.00 |
| Year 5 following Initial Amortization Measurement Period | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; $171420000.00 |

---

4. NO RECOURSE AGAINST OTHERS. No director, officer, employee, incorporator or stockholder
of the Issuer or the Subsidiary Guarantor, as such, will have any liability for any obligations of the Issuer or the Subsidiary Guarantor
under the Notes, the Supplemental Indenture, the Subsidiary Guarantee or for any claim based on, in respect of, or by reason of, such
obligations or their creation. Each Holder by accepting a Note waives and releases all such liability. The waiver
and release are part of the consideration for issuance of the Notes. The waiver may not be effective to waive liabilities under
the federal securities laws.

5. GOVERNING LAW. THIS SUPPLEMENTAL INDENTURE, THE NOTES, AND THE SUBSIDIARY GUARANTEE
SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK

6. EXECUTION; COUNTERPART ORIGINALS. The parties may sign any number of copies of this
Supplemental Indenture. Each signed copy will be an original, but all of them together represent the same agreement. The exchange
of copies of this Supplemental Indenture and of signature pages by facsimile, or PDF or other electronic transmission shall constitute
effective execution and delivery of this Supplemental Indenture as to the parties hereto and may be used in lieu of the original Supplemental
Indenture and signature pages for all purposes and shall constitute effective execution

and delivery of this Indenture as to the parties hereto and will be of the same effect, validity and enforceability as manually executed signatures or a paper-based recordkeeping system, as the case may be, to the extent and as provided for under applicable law, including the Electronic Signatures in Global and National Commerce Act of 2000 (15 U.S.C. §§ 7001-7006), the Electronic Signatures and Records Act of 1999 (N.Y. State Tech. §§ 301-309), or any other similar state laws based on the Uniform Electronic Transactions Act; *provided* that, notwithstanding anything herein to the contrary, the Trustee is not under any obligation to agree to accept electronic signatures in any form or in any format unless expressly agreed to by such Trustee pursuant to procedures approved by such Trustee

7. EFFECT OF THIS SUPPLEMENTAL INDENTURE. The provisions of this Supplemental Indenture
are intended to supplement the Indenture, and the Indenture and this Supplemental Indenture will henceforth be read together. Except as
expressly supplemented by this Supplemental Indenture, the Indenture shall continue in full force and effect in accordance with the provisions
thereof, and the Indenture (as supplemented and amended by this Supplemental Indenture) is in all respects hereby ratified and confirmed.
This Supplemental Indenture and all its provisions shall be deemed a part of the Indenture in the manner and to the extent herein and
therein provided and all of the rights, powers, protections and indemnities of each of the Trustee and the Collateral Agent under the
Indenture shall apply to this Supplemental Indenture. To the extent of any inconsistency between the terms of the Indenture and this Supplemental
Indenture, the terms of this Supplemental Indenture will control. This Supplemental Indenture shall constitute an indenture supplemental
to the Indenture and shall be construed in connection with and form a part of the Indenture for all purposes, and every Holder of the
Notes heretofore or hereafter authenticated and delivered shall be bound hereby.

8. EFFECT OF HEADINGS. The Section headings herein are for convenience only and shall
not affect the construction hereof.

9. THE TRUSTEE AND THE COLLATERAL AGENT. Neither the Trustee nor the Collateral Agent
shall be responsible in any manner whatsoever for or in respect of the validity or sufficiency of this Supplemental Indenture or for or
in respect of the recitals contained herein, all of which recitals are made solely by the Issuer. Additionally, neither the Trustee nor
the Collateral Agent makes any representation as to the validity or sufficiency of this Supplemental Indenture. For the avoidance of doubt,
neither the Trustee nor the Collateral Agent, by executing this Supplemental Indenture in accordance with the terms of the Indenture,
agrees to undertake additional actions nor does it consent to any transaction beyond what is expressly set forth in this Supplemental
Indenture, and each of the Trustee and the Collateral Agent reserves all rights and remedies under the Indenture.

10. PROVISIONS BINDING ON SUCCESSORS. All of the covenants, stipulations, promises and
agreements made in this Supplemental Indenture by each of the parties hereto shall bind its successors and assigns whether so expressed
or not.

IN WITNESS WHEREOF, the parties hereto have cause this Indenture to be duly executed, all as of the date first above written.

---

| | |
|:---|:---|
| CIPHER COMPUTE LLC, | CIPHER COMPUTE LLC, |
| as Issuer | as Issuer |
| By: | /s/ William Iwaschuk |
| Name: | William Iwaschuk |
| Title: | Co-President, Chief Legal Officer & Corporate Secretary |

---

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| | |
|:---|:---|
| CIPHER SONGBIRD LLC, | CIPHER SONGBIRD LLC, |
| By: | /s/ William Iwaschuk |
| Name: | William Iwaschuk |
| Title: | Co-President, Chief Legal Officer & Corporate Secretary |

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| | |
|:---|:---|
| CIPHER BARBER LAKE LLC, | CIPHER BARBER LAKE LLC, |
| as a Subsidiary Guarantor | as a Subsidiary Guarantor |
| By: | /s/ William Iwaschuk |
| Name: | William Iwaschuk |
| Title: | Co-President, Chief Legal Officer & Corporate Secretary |

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*[Signature Page to Supplemental Indenture]*

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| | |
|:---|:---|
| WILMINGTON TRUST, NATIONAL ASSOCIATION, | WILMINGTON TRUST, NATIONAL ASSOCIATION, |
| as Trustee and Collateral Agent | as Trustee and Collateral Agent |
| By: | /s/ Barry D. Somrock |
| Name: | Barry D. Somrock |
| Title: | Vice President |

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*[Signature Page to Supplemental Indenture]*