Announcement on Adjustment of Prime Brokerage (PB) Account Fee Structure

Dear Valued Client,

In order to further optimize our service framework, enhance resource allocation efficiency, and provide a more stable and transparent service experience, we will implement an adjustment to the Prime Brokerage (PB) account fee structure effective June 2026.

Details of the updated policy are as follows:

1. Scope of Application and Fee Structure

This fee structure applies to:

Strategy services, financing services, and all PB account usage scenarios.

Fee Details:

Fee Item	Fee Rate	Remarks / Notes
Management Fee	0.05% – 0.0833% / month	0.6%–1.0% p.a., accrued monthly (settled in USD equivalent)
PB Account Minimum Monthly Fee	500 USD / month / account	Includes 5 sub-accounts quota
Additional Sub-Account Fee	+100 USD / month / sub-account	Incremental minimum fee applied for each sub-account beyond the 5-sub-account quota

Note: Actual fees are subject to change based on market conditions and business developments, and are provided for reference only.

Charging Logic:

The actual fee charged will be the higher of:

(i) the management fee based on AUM, or (ii) the minimum monthly fee

Note:

Financing interests, profit sharing mechanisms, third party off-exchange settlement solutions fees, and other specialized service charges, if applicable, will continue to be calculated separately in accordance with the applicable and existing rules. Specifically with respect to third party off-exchange settlement solutions, any applicable service fees charged by such service providers shall be borne by the client in full.

2. Dynamic Adjustments and Billing Details

2.1 Sub-account Additions

Any sub-accounts opened at any time during the month (from the 1st to the end of the month) will be charged on a full-month basis:

Each additional sub-account will incur a USD 100 fee for that month, with no pro-rata adjustment.

2.2 Fee Confirmation and Lock-up Mechanism

Fee Lock Date: The last calendar day of each month
Lock-up Rule:
On the lock date, the system will determine and reserve the minimum fee for the current month. This reserved amount will be non-withdrawable
Billing Date: Fees will be deducted on the 10th of following month

3. Transition Arrangements for Existing Clients

Grace Period (May 2026):
Existing clients will continue under the current fee structure throughout May 2026
Termination Notice Requirement:
If you plan to discontinue using your PB account starting June 2026, please submit a formal notice via official email or Telegram group no later than May 20, 2026
Late Notice Handling:
If no notice is received by the deadline, your account will be considered automatically renewed, and the minimum fee for June will be locked in on June 30th under the new rules

4. Account Termination and Fee Policy

For clients who intend to discontinue service in the following month:

Notice before the end of the current month:
- No charges will apply for the following month
- The current month will be charged in full (no pro-rata adjustment)

5. Overdue Payment and Account Restrictions

5.1 Insufficient Balance Reminder (End of each month)

If the PB wallet balance is insufficient to cover the reserved minimum fee for this month, the system will trigger a notification, and your account manager will follow up accordingly.

5.2 Overdue Handling (Before the 10th of the following month)

If the account balance remains insufficient by the billing date, the following measures may be implemented after final notice:

Suspension of all sub-account access
Restriction on fund withdrawals until outstanding fees are fully settled
Recording of credit status, which may affect future financing limits

6. Additional Notes

This adjustment is intended to establish a clearer and more stable fee structure while ensuring service quality and fair resource allocation.

Clients are advised to review their account structure and funding arrangements in advance to avoid unnecessary fees or service disruptions.

7. Enquiries and Support

If you have any questions regarding this adjustment, please contact your account manager or reach out through our official channels. We are happy to assist you.

8. Billing Examples

Example A: AUM Meets Minimum Threshold

AUM: USD 1,000,000
Management Fee: 1,000,000 × 0.05% = USD 500
Actual Charge: USD 500 (AUM-based fee equals the minimum)

Example B: AUM Below Minimum Threshold

AUM: USD 200,000
Management Fee: 200,000 × 0.05% = USD 100
Actual Charge: USD 500 (minimum fee applies)

9.Third-Party Off-Exchange Settlement Solution Fee Schedule

Item	Copper	Oasis
Fee Basis	Authorized assets under each Copper sub-account	Authorized assets under each Oasis sub-account
Annualized Rate	1.5% p.a.	0.5% p.a.
Daily Fee Formula	Daily maximum authorized assets × 1.5% ÷ Total number of days in the applicable year	AUC × 0.50% ÷ Total number of days in the applicable year
Asset Valuation Basis	Daily maximum authorized assets	AUC at 23:59:59 (UTC), calculated as: Mapped Asset Quantity × Mapped Asset Price
Billing Frequency	Calculated daily	Calculated daily
Settlement Method	The total monthly fee will be converted into the strategy's base currency using the asset price as of 00:00 (UTC) on the settlement date.	The total monthly fee will be converted into the strategy's base currency using the asset price as of 00:00 (UTC) on the settlement date.

Thank you for your continued trust and support.

BIT

April 29, 2026