Company: IMCR
Filing Date: 2025-03-17
Form Type: 424B7
Source: 0001140361-25-008917
Chunk: 0

Company: Immunocore Holdings plc
Filing Date: 2025-03-17
Form: 424B7
Chunk 0
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#### TABLE OF CONTENTS

#### Filed pursuant to Rule 424(b)(7)

#### Registration No. 333-278120

#### Prospectus Supplement
(To prospectus dated March 21, 2024)

<div align='center'>**Up to $150,000,000 of 2.50% Convertible Senior Notes due 2030

Up to 1,584,014 American Depositary Shares (representing 1,584,014 ordinary shares) issuable upon conversion of the notes**</div>

**On February 2, 2024, we issued and sold $402.5 million aggregate principal amount of 2.50% Convertible Senior Notes due 2030, or the notes, in a private placement in reliance on an exemption from registration under the Securities Act of 1933, as amended, or the Securities Act. The initial purchasers of the notes in that offering resold the notes in offerings in reliance on an exemption from registration under Rule 144A of the Securities Act. The notes were issued pursuant to an indenture, dated February 2, 2024, as supplemented by the first supplemental indenture, dated March 17, 2025, or the indenture, between us and U.S. Bank Trust Company, National Association, as trustee.

This prospectus relates to the resale of up to $150,000,000 aggregate principal amount of the notes and the American Depositary Shares, or ADSs, issuable on conversion of the notes, including the ordinary shares, nominal value £0.002 per share, or the ordinary shares, represented by such ADSs, or the note conversion ADSs, by the selling securityholders referred to in this prospectus supplement. We will not receive any proceeds from the resale by the selling securityholders of the notes or the note conversion ADSs described in this prospectus.

The notes bear interest at a rate of 2.50% per year, payable semiannually in arrears on February 1 and August 1 of each year, beginning on August 1, 2024. The notes will mature on February 1, 2030, unless earlier converted, redeemed or repurchased. Holders may convert all or any portion of their notes at their option at any time prior to the close of business on the business day immediately preceding the maturity date. Upon conversion, we will deliver for each $1,000 principal amount of converted notes a number of our ADSs, each representing as of