[Bithumb] We will take full responsibility for this incident through to the end.

We sincerely apologize for the significant confusion and inconvenience caused to our customers due to the erroneous payment incident that occurred on February 6.

We deeply acknowledge our grave responsibility for failing to uphold “stability and integrity,” the top priorities of a virtual asset exchange.

Following this erroneous payment incident, we have completed all required reports to the relevant authorities and are also cooperating in good faith with the ongoing inspection by the Financial Supervisory Service.

1. We will ensure that human error does not become an incident through systems and processes.

To prevent a recurrence, Bithumb has established measures to strengthen our internal control systems and implement innovation-focused recurrence-prevention initiatives.

(1) Enhancement of the asset verification system: When executing payments based on events or company policies, we will strengthen verification systems for both customer and company assets.

(2) Improvement of the multi-level approval system: For customer asset transfers and reward payments, we will supplement processes that had been partially omitted so that approvals of at least two stages are executed, thereby preventing incidents.

(3) Strengthening AI-based abnormal transaction detection and automatic blocking systems: If abnormal transactions or figures are detected, we will operate a 24/7 “safeguard” that enables the system to immediately detect and fundamentally block incidents at the source.

(4) External system audit by specialized institutions: Through a global security specialist, we will conduct a comprehensive diagnosis of Bithumb’s entire system and disclose the results transparently.

2. We will take full responsibility to ensure customers do not incur losses.

Since our second notice up to the present, no direct losses to customer assets have occurred as a result of the erroneous payment incident. However, we have confirmed cases in which some trades during the incident window were executed on unfavorable terms for customers due to a sharp price drop (panic selling).

Bithumb has determined that these trades should also be treated as the company’s responsibility from a customer protection perspective, and we plan to provide additional compensation, including full reimbursement, to the affected customers.

As of 2026-02-07 16:00, the estimated customer loss amount is understood to be approximately KRW 1 billion. We plan to compensate all portions that may be added thereafter as well.

(1) Special 110% compensation for panic selling: For customers who sold at low prices due to the incident among sell trades during the incident window (2026-02-06 19:30~19:45), we will pay the full amount of the price difference plus an additional 10%. (Automatic payment within one week after data verification)

(2) Compensation for all customers who accessed the service during the incident window: We will pay KRW 20,000 within one week to all customers who were accessing Bithumb’s service during the incident window.

(3) Zero trading fees for all customers: As a token of appreciation to all customers who trusted us and waited, we will reduce trading fees to 0% for all markets for 7 days. (Separate notice to follow)

(4) Establishment of a KRW 100 billion “Customer Protection Fund” on a standing basis: We will operate a dedicated fund, separately deposited, to provide immediate relief for customer assets even in the event of unforeseen incidents.

Bithumb will take this incident as a lesson and place “customer trust and peace of mind” as our top priority over outward growth.

We once again sincerely apologize.

February 7, 2026

Sincerely,

Jaewon Lee, CEO, Bithumb Co., Ltd.