Company: NCNA
Filing Date: 2025-06-18
Form Type: F-3/A
Source: 0001193125-25-142565
Chunk: 28

Company: NuCana plc
Filing Date: 2025-06-18
Form: F-3/A
Chunk 28
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 in those shares. Under our articles of association, if a person defaults in supplying us with the required particulars in relation to the shares in question (referred to herein as “default shares”), the board of directors may by notice direct that:

| • |     | in respect of the default shares, the relevant shareholder shall not be entitled to vote or exercise any other 
 right conferred by his holding shares in relation to general meetings; or                                      |

| • |     | where the default shares represent at least 0.25% of their class, (a) any dividend or other money payable in                                                                                                                                        
 respect of the default shares shall be retained by us without liability to pay interest and, if applicable, any election to receive ordinary shares instead of money in respect of the default shares shall be ineffective; (b) no transfers of     
 shares by the relevant shareholder other than certain approved transfers may be registered (unless the shareholder himself is not in default and the transfer does not relate to default shares) or (c) any shares held by the relevant shareholder 
 in uncertificated form shall be converted into certificated form.                                                                                                                                                                                   |

Purchase of own shares.Under English law, a limited company may only purchase its own shares out of its distributable profits or the proceeds of a fresh issue of shares made for the purpose of financing the purchase, provided it is not restricted from doing so by its articles. A limited company may not purchase its own shares if, as a result of the purchase, there would no longer be any issued shares of the company other than redeemable shares or shares held as treasury shares. Shares must be fully paid in order to be repurchased. We may purchase our own fully paid shares otherwise than on a recognized investment exchange pursuant to a purchase contract authorized by resolution of shareholders before the purchase takes place. Any authority will not be effective if any shareholder from whom we propose to purchase shares votes on the resolution and the resolution would not have been passed if he had not done so. The resolution authorizing the purchase must specify a date, not being later than five years after the passing of the resolution, on which the authority to purchase is to expire. We may, at our option, and subject to the Companies Act 2006, purchase any or all of the deferred shares then in issue for an aggregate consideration of £0.01 payable to one of the holders of deferred shares. Preemptive Rights.English law generally provides shareholders with preemptive rights when new shares are issued for cash; however, it is possible for a