Barclays PLC — Capital/Financing Update 2023

Oct 27, 2023

Supplement Number 3 dated 25 October 2023 to the Base Prospectus dated 7 March 2023

BARCLAYS PLC

(incorporated with limited liability in England and Wales)

as Issuer

Debt Issuance Programme

This base prospectus supplement (the "Supplement") is supplemental to, forms part of and must be read in conjunction with, the base prospectus dated 7 March 2023, as supplemented by Supplement Number 1 dated 28 April 2023 and Supplement Number 2 dated 28 July 2023 (together, the "Base Prospectus") prepared by Barclays PLC (the "Issuer") with respect to its Debt Issuance Programme (the "Programme"). This Supplement constitutes a supplementary prospectus in respect of the Base Prospectus for the Issuer for the purposes of Article 23 of Regulation (EU) 2017/1129 of the European Parliament and of the Council of 14 June 2017 as it forms part of domestic law of the United Kingdom by virtue of the European Union (Withdrawal) Act 2018, as amended (the "UK Prospectus Regulation").

Terms defined in the Base Prospectus shall, unless the context otherwise requires, have the same meaning when used in this Supplement.

This Supplement has been approved by the United Kingdom Financial Conduct Authority (the "FCA"), as competent authority under the UK Prospectus Regulation, as a base prospectus supplement issued in compliance with the UK Prospectus Regulation. The FCA only approves this Supplement as meeting the standards of completeness, comprehensibility and consistency imposed by the UK Prospectus Regulation. Such approval should not be considered as an endorsement of the Issuer that is the subject of this Supplement. With effect from the date of this Supplement the information appearing in, or incorporated by reference into, the Base Prospectus shall be supplemented in the manner described below.

The purpose of this Supplement is to:

• (a) supplement the section entitled "Information Incorporated by Reference" commencing on page 23 of the Base Prospectus and incorporate by reference into the Base Prospectus the unaudited interim results announcement of the Issuer, as filed with the SEC on Form 6-K (including exhibits thereto) on 24 October 2023 in respect of the nine months ended 30 September 2023 (the "Q3 Results Announcement"). The Q3 Results Announcement has been filed with the FCA and shall be deemed to be incorporated in, and form part of, the Base Prospectus as supplemented by this Supplement. The Q3 Results Announcement may be inspected during normal business hours at Barclays Treasury, 1 Churchill Place, London, E14 5HP, United Kingdom and at the specified office of the Principal Paying Agent, at 160 Queen Victoria Street, London, EC4V 4LA, United Kingdom during the life of the Notes issued pursuant to the Base Prospectus. It has also been filed with the SEC and is available in electronic form on the SEC's website at https://www.sec.gov/cgibin/browse-edgar?company=barclays+plc&owner=exclude&action=getcompany;
• (b) amend the first paragraph of the section entitled "Forward-Looking Statements" commencing on page viii of the Base Prospectus by inserting the words "return on tangible equity," after the phrase

"capital distributions (including dividend policy and share buybacks)," and before the words "projected levels of growth";

• (c) amend the second paragraph of the section entitled "Forward-Looking Statements" commencing on page viii of the Base Prospectus by inserting the word ", regulation" after the words "changes in legislation" and before the words "and the interpretation thereof";
• (d) amend the second paragraph of the section entitled "Forward-Looking Statements" commencing on page viii of the Base Prospectus by deleting the word "future" from the phrase "the success of future acquisitions, disposals and other strategic transactions"; and
• (e) replace the sub-section entitled "Significant/Material Change" under the section entitled "General Information" commencing on page 165 of the Base Prospectus with the following:

"There has been no material adverse change in the prospects of the Issuer or the Group since 31 December 2022, nor any significant change in the financial position or financial performance of the Issuer or the Group since 30 September 2023.".

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IMPORTANT NOTICES

The Issuer accepts responsibility for the information contained in this Supplement and declares that, to the best of its knowledge, the information contained in this Supplement is in accordance with the facts and this Supplement makes no omission likely to affect its import.

To the extent that there is any inconsistency between (a) any statement in this Supplement or any statement incorporated by reference into the Base Prospectus by this Supplement and (b) any other statement in, or incorporated by reference into, the Base Prospectus, the statements in (a) above will prevail.

Save as disclosed in this Supplement, no significant new factor, material mistake or material inaccuracy relating to the information included in the Base Prospectus which is capable of affecting the assessment of the Notes issued under the Programme has arisen or been noted, as the case may be, since the publication of the Base Prospectus.

Any information contained in the documents specified above which is not incorporated by reference in the Base Prospectus is either not relevant for prospective investors for the purposes of Article 6(1) of the UK Prospectus Regulation or is covered elsewhere in the Base Prospectus.

If documents which are incorporated by reference into this Supplement themselves incorporate any information or other documents therein, either expressly or implicitly, such information or other documents will not form part of this Supplement for the purposes of the UK Prospectus Regulation except where such information or other documents are specifically incorporated by reference into this Supplement.

This Supplement shall be available on or around the date hereof in electronic form at https://www.londonstockexchange.com/exchange/news/market-news/market-news-home.html.

25 October 2023

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