Investment risk is concentrated in specific sectors, countries, currencies or companies. This means the Fund is more sensitive to any localised economic, market, political, sustainability-related or regulatory events.

The value of equities and equity-related securities can be affected by daily stock market movements. Other influential factors include political, economic news, company earnings and significant corporate events.

Counterparty Risk: The insolvency of any institutions providing services such as safekeeping of assets or acting as counterparty to derivatives or other instruments, may expose the Fund to financial loss.

This material is for distribution to Professional, Qualified Clients and Investors only.

In the European Economic Area (EEA): this is Issued by BlackRock (Netherlands) B.V. is authorised and regulated by the Netherlands Authority for the Financial Markets. Registered office Amstelplein 1, 1096 HA, Amsterdam, Tel: 020 – 549 5200, Tel: 31-20-549-5200. Trade Register No. 17068311 For your protection telephone calls are usually recorded. For Ireland and only in relation to Per Se Professionals and/or Eligible Counterparties (i.e., Professional Investors), this may also be issued by BlackRock Investment Management (UK) Limited, authorised and regulated by the Financial Conduct Authority. Registered office: 12 Throgmorton Avenue, London, EC2N 2DL. Tel: + 44 (0)20 7743 3000. Registered in England and Wales No. 02020394. For your protection telephone calls are usually recorded. Please refer to the Financial Conduct Authority website for a list of authorised activities conducted by BlackRock.

In the UK and Non-European Economic Area (EEA) countries (excluding Switzerland),: this is Issued by BlackRock Investment Management (UK) Limited, authorised and regulated by the Financial Conduct Authority. Registered office: 12 Throgmorton Avenue, London, EC2N 2DL. Tel: + 44 (0)20 7743 3000. Registered in England and Wales No. 02020394. For your protection telephone calls are usually recorded. Please refer to the Financial Conduct Authority website for a list of authorised activities conducted by BlackRock.

This is Marketing Material. The iShares UK Index Fund (IE) are sub-funds of BlackRock Index Selection Fund (the Fund). The Fund is organised under the laws of Ireland and authorised by the Central Bank of Ireland as UCITS for the purposes of the UCITS Regulations. Investment in the sub-fund(s) is only open to 'Qualified Holders', as defined in the relevant Fund Prospectus. In the UK subscriptions in BISF are valid only if made on the basis of the current Prospectus, the most recent financial reports and the Key Investor Information Document, and in the EEA and Switzerland subscriptions in BISF are valid only if made on the basis of the current Prospectus (available in English, German, French languages), the most recent financial reports and the Packaged Retail and Insurance-based Investment Products Key Information Document (PRIIPs KID) which are available in registered jurisdictions and local language where they are registered, these can be found at www.blackrock.com on the relevant product pages. Any investment decision should be made on the basis of the information outlined above and Investors should understand all characteristics of the funds objective before investing, if applicable this includes sustainable disclosures and sustainable related characteristics of the fund as found in the prospectus, which can be found www.blackrock.com on the relevant country and product pages for where the fund is registered for sale. PRIIPs KID and application forms may not be available to investors in certain jurisdictions where the Fund in question has not been authorised. BlackRock and/or the Management Company may terminate marketing at any time. For information on investor rights and how to raise complaints please go to  https://www.blackrock.com/corporate/compliance/investor-right available in in local language in registered jurisdictions. UCITS HAVE NO GUARANTEED RETURN AND PAST PERFORMANCE DOES NOT GUARANTEE THE FUTURE ONES

This document is marketing material and will expire 12 months after issue

Any research in this document has been procured and may have been acted on by BlackRock for its own purpose. The results of such research are being made available only incidentally. The views expressed do not constitute investment or any other advice and are subject to change. They do not necessarily reflect the views of any company in the BlackRock Group or any part thereof and no assurances are made as to their accuracy

This document is for information purposes only and does not constitute an offer or invitation to anyone to invest in any BlackRock funds and has not been prepared in connection with any such offer.

© 2026 BlackRock, Inc. All Rights reserved. BLACKROCK, BLACKROCK SOLUTIONS, and iSHARES are trademarks of BlackRock, Inc. or its affiliates All other trademarks are those of their respective owners