Company: CIB
Filing Date: 2025-08-15
Form Type: 6-K
Source: 0002058897-25-000035
Chunk: 9

Company: Grupo Cibest S.A.
Filing Date: 2025-08-15
Form: 6-K
Chunk 9
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, the interest rate risk factor increased, driven by higher exposure to private debt securities and foreign currency bonds. The stock price risk factor also rose, associated with greater exposure to equity instruments within the broker-dealer’s portfolio. Lastly, the collective investment funds risk factor recorded an increase, explained by the appreciation of the Fondo Inmobiliario Colombia.

Market risk exposure has been maintained within the approved levels, it is permanently monitored by Senior Management, and is a tool for decision-making that allows preserving the stability of Grupo Cibest Consolidated.

#### Non-trading Instruments Market Risk Measurement
The main risk exposure in the banking book is interest rate risk, which refers to the likelihood of unexpected changes in net interest income or in the economic value of equity as a result of fluctuations in market interest rates. Changes in interest rates affect Grupo Cibest Consolidated’s income due to mismatches in the repricing of assets and liabilities. The management interest rate risk arising from banking activities in non-tradable instruments by analyzing interest rate mismatches between interest rate-sensitive assets and liabilities, and by estimating the impact on the net interest margin and the economic value of equity. Foreign exchange exposures that arise in the banking book are transferred to the treasury book for management.

#### Interest Risk Exposure (Banking Book)
Grupo Cibest Consolidated conducts an interest rate risk sensitivity analysis by estimating the impact on the net interest margin of each position in the banking book using a repricing model and assuming a positive parallel shift of 100 basis points in interest rates.

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The principles and guidelines for interest rate risk management in the banking book remain consistent with those disclosed for Grupo Bancolombia as of December 31, 2024.

Sensitivity To Interest Rate Risk Of The Banking Book

As of June 30, 2025, the net sensitivity of the banking book in local currency to a parallel shift of 100 basis points in interest rates was COP 360,797 millions, representing an increase of COP 13,549 millions compared to December 2024. This increase was mainly driven by a higher balance of variable-rate loans, partially offset by the implementation of hedge accounting strategies and the growth in Certificates of Term Deposit (CDTs) with maturities of less than one year.

Meanwhile, the sensitivity of the Net Interest Margin (NII) in foreign currency to a parallel shift of 100 basis points in interest rates increased by USD 7.89 millions between December 31, 2024, and June 30, 202