⚠️ OMUSDT Perpetual Contract Delisting Notice (02-20)

⚠️ OMUSDT Perpetual Contract Delisting Notice (02-20)

Dear ONX BIT Futures Users,

Due to the brand upgrade of MANTRA (OM), which will be renamed to MANTRA (MANTRA), ONX BIT (by OnX Wallet) Futures will delist the OMUSDT Perpetual Contract at 07:00 on February 20, 2026 (UTC).

📌 Delisting Schedule

• 06:50 on February 20, 2026 (UTC): Opening new positions will be suspended. Closing positions will remain available.
• 07:00 on February 20, 2026 (UTC): The OMUSDT Perpetual Contract will be officially delisted.

Upon delisting:

• All open orders will be canceled.
• All positions will be settled at the average index price calculated during the last 30 minutes prior to delisting.

Users are strongly advised to close positions in advance to avoid potential losses due to market volatility.

📊 Updated Mark Price Mechanism Before Delisting

To enhance fairness and stability, the mark price mechanism for the final 30 minutes prior to delisting will be adjusted as follows:

Mark Price = Average Index Price (calculated every second)

Example for a 07:00 delisting:

• 06:35 Mark Price = Average index price from 06:30 to 06:35
• 06:59 Mark Price = Average index price from 06:30 to 06:59

⏳ 180-Second Smooth Transition Mechanism

Starting from 06:30 (UTC), the system will gradually transition from the original mark price formula to the new average-based formula over a 180-second window to prevent sudden price fluctuations.

Mark Price = β × (New Formula) + (1 − β) × (Old Formula)

⚠️ Additional Risk Controls

If abnormal market fluctuations or suspected index manipulation occur, ONX BIT (by OnX Wallet) Futures may implement protective measures without prior notice, including but not limited to:

• Adjusting maximum leverage
• Adjusting position limits and maintenance margin tiers
• Updating funding rate components (interest rate, premium index, capped rate)
• Modifying index price constituents

The market may experience significant volatility prior to delisting. Users are encouraged to reduce leverage or close positions in advance to manage risk effectively.

Thank you for your understanding and continued support.

ONX BIT (by OnX Wallet) Futures Team
February 15, 2026