4basebio | Retail Offer

What’s the expected timeline?

Applications might close early, without prior warning. If you’d like to take part, we’d suggest doing your research and completing your application in good time ahead of the deadline.

Offer Details

• Offer price: 515 pence representing a discount of 8.4% to the closing mid-price of the Company's existing shares on 14 October 2026.

• Fundraising method: Long-dated. Please note that applications can close early and without prior warning.

• Minimum investment: £100

• Applications close: 11am Wednesday 21 October

• Applications are open to existing shareholders only

• Once applications have closed, you will not be able to amend or cancel your order

• It’s free to apply for shares. Find out more about our charges.

What happens after you apply?

• You can view or cancel your application in the ‘Pending Orders’ tab of your online account during the offer period.

• You will receive confirmation of your allocation by Secure Message on Thursday 22 October

• Shares are expected to be credited to your account on Tuesday 10 November 2026.

Important Information

• Investing in an individual company isn’t right for everyone because if that company fails, you could lose your whole investment. If you cannot afford this, investing in a single company might not be right for you. You should make sure you understand the companies you’re investing in and their specific risks. You should also make sure any shares you own are part of a diversified portfolio.

• The offer is only open to individuals who are physically located in the United Kingdom.

• If the offer is oversubscribed, you may not receive the full amount that you have applied for.

• Any cash not used to fund your allocation will be released back to your available balance when your allocated shares are credited to your account.

• Your application will be accepted on the basis of information in the Company Announcement, HL Retail Offer Terms & Conditions and HL Risk Warning. If you are unsure whether an investment is suitable for you please seek Financial Advice.

• The Retail Offer is conditional on the requisite approvals being obtained from shareholders at the general meeting of the Company expected to be held on or around 06 November 2026.

• HL will receive a distribution fee to cover our costs of advertising this offer. This fee will not exceed 0.6% of the value of the shares allocated and is paid by 4basebio. You will not be charged to participate in this offer.

Costs & Charges

The following charges are based on an investment of £5,000 within a Stocks and Shares ISA over 5 years assuming 5% annual growth rate.

The costs and charges shown are for illustration purposes only based on the assumptions presented. Please refer to our tariff of charges before investing. Returns are not guaranteed.

Figures may not add up to the given total due to rounding.