Company: NCNA
Filing Date: 2025-04-04
Form Type: DRS
Source: 0000950123-25-003335
Chunk: 108

Company: NuCana plc
Filing Date: 2025-04-04
Form: DRS
Chunk 108
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 , 2025 |
| Elliot Levy       |     | Director                                     |     | , 2025 |
| Martin Mellish    |     | Director                                     |     | , 2025 |

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Confidential Treatment Requested by Nucana plc Pursuant to 17 C.F.R. Section 200.83 SIGNATURE OF AUTHORIZED U.S. REPRESENTATIVE OF THE REGISTRANT Pursuant to the Securities Act of 1933, the undersigned, the duly authorized representative in the United States of NuCana plc has signed this registration statement or amendment thereto on , 2025.

| By: |     |        |
|     |     | Name:  |
|     |     | Title: |

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