Notice of General Meeting

BOSTON--(BUSINESS WIRE)--PureTech Health plc (Nasdaq: PRTC, LSE: PRTC) ("PureTech" or the "Company"), a clinical-stage biotherapeutics company dedicated to changing the lives of patients with devastating diseases, today announces the opening of its proposed $100 million tender offer (the "Tender Offer").

Tender Offer Highlights

• The Tender Offer opens today 20 May 2024. Subject to the terms and conditions of the Tender Offer, the Company will purchase for cash a maximum of $100 million in value of ordinary shares of one pence each in the capital of the Company ("Ordinary Shares") (including Ordinary Shares represented by the Company's American Depositary Shares each representing 10 Ordinary Shares ("ADSs")).
• The Tender Offer for the Company's Ordinary Shares will close at 1:00 p.m. London time on Thursday 20 June 2024 (the "Ordinary Share Closing Date"), and the Tender Offer for the Company's ADSs will close at 5:00 p.m. New York City time on Tuesday 18 June 2024 (the "ADS Closing Date"), unless the Tender Offer is extended.
• The Company is offering to purchase up to 33,500,000 Ordinary Shares (including Ordinary Shares represented by ADSs) representing approximately 12 percent of the Company's issued ordinary share capital as at 16 May 2024 (being the latest practicable date before publication of this announcement ("Latest Practicable Date")) at a fixed price of 250 pence per Ordinary Share (equivalent to £25.00 per ADS) (the "Tender Price") up to a maximum aggregate amount of $100 million. The maximum amount of $100 million will be translated into a pounds sterling amount on the Ordinary Share Closing Date, and that pounds sterling amount shall determine the maximum number of shares to be accepted for payment in the Tender Offer.
• The Tender Price represents a premium of 25 percent to PureTech's trailing volume weighted average price per Ordinary Share over the three days prior to 19 March 2024, the date of the Company's initial announcement of the Tender Offer proposals and a premium of 12.6 percent to the closing price of 222 pence per Ordinary Share on the Latest Practicable Date.
• If the full $100 million is not returned through the Tender Offer, then, if there is sufficient surplus, the Company's board of directors ("Board") intends to return such surplus by way of a special dividend following completion of the Tender Offer, without interest, less any applicable withholding taxes and subject to market and industry conditions at the time and any relevant legal restrictions (the "Special Dividend").
• Completion of the Tender Offer will be conditional, among other things, on shareholder approval at a general meeting of the Company to be held at 11:00 a.m. New York City time (4:00 p.m. London time) on 6 June 2024 at the Company's offices at 6 Tide Street, Boston, Massachusetts, 02210, United States (the "General Meeting").
• Full details of the Tender Offer are included in a circular to the Company's Shareholders (the "Circular") which will be mailed to Shareholders and ADS Holders today and available on a website set up by the Company for the purposes of the Tender Offer. The website is available at Copies of the Circular will be submitted to the National Storage Mechanism and will be available for inspection at The Circular will also be included as an exhibit to the Schedule TO to be filed with the Securities and Exchange Commission and will be available for inspection at
• SHAREHOLDERS AND ADS HOLDERS ARE ADVISED TO CONSULT WITH THEIR PROFESSIONAL TAX ADVISORS IN CONNECTION WITH CERTAIN US FEDERAL WITHHOLDING TAX CONSIDERATIONS DESCRIBED IN FURTHER DETAIL BELOW (SEE "Certain US Federal Income Tax Considerations with Respect to the Tender Offer").

Structure of the Tender Offer

The Tender Offer will be implemented on the basis of Jefferies International Limited ("Jefferies") acquiring, as principal, the successfully tendered Ordinary Shares (including Ordinary Shares represented by ADSs) at the Tender Price. In turn, Jefferies has the right to require the Company to purchase such Ordinary Shares (including Ordinary Shares represented by ADSs) from it at the same Tender Price pursuant to an option agreement entered into between the Company and Jefferies (the "Option Agreement"). If Jefferies does not exercise its right to require the Company to purchase such Ordinary Shares (including Ordinary Shares represented by ADSs), the Company has the right to require Jefferies to sell such Ordinary Shares (including Ordinary Shares represented by ADSs) to it at the same price. The Company intends to cancel the Ordinary Shares (including Ordinary Shares represented by ADSs) purchased by it pursuant to the Tender Offer.

Shareholders can decide whether they want to tender all, some or none of their Ordinary Shares or ADSs in the Tender Offer.

If the aggregate value at the Tender Price of all validly tendered Ordinary Shares (including Ordinary Shares represented by ADSs) exceeds $100 million (based on the applicable exchange rate of US dollars to pounds sterling on the Ordinary Share Closing Date) or the number of validly tendered Ordinary Shares (including Ordinary Shares represented by ADSs) exceeds 33,500,000 Ordinary Shares, then not all of the Ordinary Shares (including Ordinary Shares represented by ADSs) validly tendered will be accepted and purchased. In these circumstances, tenders will be scaled down pro-rata to the total number of Ordinary Shares (including Ordinary Shares represented by ADSs) so tendered by that shareholder, such that the total cost of Ordinary Shares (including Ordinary Shares represented by ADSs) purchased pursuant to the Tender Offer does not exceed $100 million or the total number of validly tendered Ordinary Shares (including Ordinary Shares represented by ADSs) does not exceed 33,500,000 Ordinary Shares.

Certain US Federal Income Tax Considerations with Respect to the Tender Offer

Shareholders and ADS Holders should consult their professional tax advisors in connection with the Tender Offer.

Shareholders and ADS Holders should note that, due to the circumstances of its formation and the application of Section 7874 of the United States Internal Revenue Code of 1986, as amended ("Code"), the Company is treated as a US domestic corporation for US federal income tax purposes. Accordingly, the Company is subject to US federal income tax as if it were a US corporation, and distributions made by the Company (including certain payments in respect of the Tender Offer that are treated as distributions for US federal income tax purposes) are generally treated as US-source dividends, as if the Company were incorporated in the US. As a result, both US Holders and Non-US Holders (each as defined in the Circular) may be subject to US federal income tax withholding on receipt of cash proceeds from any tendered Ordinary Shares or ADSs accepted in the Tender Offer and the Special Dividend (if any).

The attention of Shareholders and ADS Holders is drawn to Part VI of the Circular, which provides a summary of certain material UK tax and US federal income tax consequences for Shareholders and ADS Holders of accepting the Tender Offer or receipt of the Special Dividend (if any).

All Shareholders and ADS Holders should receive a Section 302 Certification. Copies of the Section 302 Certification, IRS Form W-9, and IRS Forms W-8, as well the IRS instructions with respect to such IRS Forms, are also available on the Microsite set up by the Company for the purposes of the Tender Offer. The Microsite is available at

In consultation with their professional tax advisors regarding their individual circumstances, Shareholders and ADS Holders should complete the Section 302 Certification and an IRS Form W-9 or applicable IRS Form W-8, as applicable, in accordance with the instructions thereon. Shareholders and ADS Holders should return the properly completed Section 302 Certification and the IRS Form W-9 or applicable IRS Form W-8, as applicable, in accordance with the instructions set forth the Circular, the Tender Form, the Letter of Transmittal and the Section 302 Certification, as applicable. Part VI of the Circular also provides additional information to Shareholders and ADS Holders on the process for returning a Section 302 Certifications and an IRS Form W-9 or applicable IRS Forms W-8, as applicable.

The appropriate IRS Form W-9 or Form W-8 should be returned whether or not a Shareholder plans to participate in the Tender Offer, if not previously provided. IRS Form W-9 and IRS Form W-8 will also be relevant in connection with the Special Dividend (if any).

This information is not tax advice, and the Company cannot advise you with respect to taxes. Shareholders and ADS Holders should consult their professional tax advisors, in particular regarding their individual tax position and the exemptions or reductions of US withholding tax that may be available to them. For more information, Shareholders and ADS Holders should read the full text of this announcement of the Tender Offer, the Circular, the Tender Form, and the Letter of Transmittal.

General Meeting

Implementation of the Tender Offer is conditional upon, amongst other things, the approval of the shareholders of the resolution necessary to implement the Tender Offer (the "Resolution"). For this purpose, the Company is convening the General Meeting for 11 a.m. New York City time (4 p.m. London time) on 6 June 2024 to be held at 6 Tide Street, Boston, Massachusetts, 02210, United States to consider and, if thought fit, pass the Resolution to approve the terms on which the Tender Offer will be effected. A notice convening the General Meeting is set out at the end of the Circular.

Participating in the Tender Offer

If you are a Shareholder and hold your Ordinary Shares in Certificated Form and you wish to tender all or any of your Ordinary Shares, you should complete the Tender Form in accordance with the instructions printed on it and in Part V of the Circular and return it by post in the accompanying reply-paid envelope (for use in the UK only) to the Receiving Agent, at the Pavilions, Bridgewater Road, Bristol, BS99 6AH so as to be received by no later than 1:00 p.m. (London time) on Thursday 20 June 2024, together with your share certificate(s) in respect of the Ordinary Shares tendered.

If you are a Shareholder and hold your Ordinary Shares in Uncertificated Form and you wish to tender all or any of your Ordinary Shares, you should send the TTE Instruction through CREST so as to settle by no later than 1:00 p.m. (London time) on Thursday 20 June 2024.

Any ADS Holder who holds ADSs on the books of the Depositary who wishes to tender pursuant to the Tender Offer should properly complete and duly execute a Letter of Transmittal (or facsimile thereof), together with any required signature guarantees and any other required documents, and deliver such documents to the tender agent for the ADSs, Citibank, N.A. (the "Tender Agent"), at the appropriate address set forth in the Letter of Transmittal so as to be received no later than 5:00 p.m. (New York City time) on the ADS Closing Date (unless the Tender Offer is extended). In addition, the ADRs evidencing the tendered ADSs must be received by the Tender Agent at the appropriate address or be delivered pursuant to the procedures for book-entry transfer set forth below (and a confirmation of receipt of such transfer must be received by the Tender Agent) so as to be received no later than 5:00 p.m. (New York City time) on the ADS Closing Date.

If the ADSs are held through a broker, dealer, commercial bank, trust company or other securities intermediary and the ADS Holder wishes to participate in the Tender Offer, such ADS Holder should provide tender instructions in accordance with the instructions provided by such intermediary in sufficient time so as to ensure that such intermediary can provide such instructions to the Tender Agent so as to be received no later than 5:00 p.m. (New York City time) on the ADS Closing Date (unless the Tender Offer is extended).

Timetable

A summary expected timetable of principal events is set out in Appendix I to this announcement.

Shareholder Helpline

If you have any questions about the procedure for tendering Ordinary Shares, please call Computershare Investor Services PLC on +44 370 707 4040. Calls are charged at the standard geographic rate and will vary by provider. Calls outside the United Kingdom will be charged at the applicable international rate. The helpline is open between 8:30 a.m. – 5:30 p.m., London time Monday to Friday, excluding public holidays in England and Wales. Please note that Computershare Investor Services PLC will be unable to give advice on the merits of the Tender Offer or to provide financial, investment or taxation advice.

The Information Agent with respect to the Tender Offer for ADSs and Ordinary Shares in the United States is Georgeson LLC. If you are an ADS holder, an ordinary shareholder, bank, broker or institutional holder in the United States and have questions on how you can participate in the Tender Offer, please call the Information Agent at (+1) 866 529 2770 (toll-free) and (+1) 781 896 6940 (from other countries) from 9 a.m. to 8 p.m. New York City time Monday to Friday, and Saturday from 10 a.m. to 2 p.m. New York City time.

About PureTech Health
PureTech is a clinical-stage biotherapeutics company dedicated to giving life to new classes of medicine to change the lives of patients with devastating diseases. The Company has created a broad and deep pipeline through its experienced research and development team and its extensive network of scientists, clinicians and industry leaders that is being advanced both internally and through its Founded Entities. PureTech's R&D engine has resulted in the development of 29 therapeutics and therapeutic candidates, including two that have received both U.S. FDA clearance and European marketing authorization and a third (KarXT) that has been filed for FDA approval. A number of these programs are being advanced by PureTech or its Founded Entities in various indications and stages of clinical development, including registration enabling studies. All of the underlying programs and platforms that resulted in this pipeline of therapeutic candidates were initially identified or discovered and then advanced by the PureTech team through key validation points.

For more information, visit or connect with us on X (formerly Twitter) @puretechh.

Additional Information for US Investors
The Tender Offer qualifies as a "Tier II" offer in accordance with Rule 14d-1(d) under the Securities Exchange Act of 1934, as amended (the "Exchange Act"), and, as a result, is exempt from certain provisions of otherwise applicable US statutes and rules relating to tender offers. US and English law and practice relating to tender offers are different in certain material respects. The Company intends to rely on the Tier II exemption from Rule 14e-1(c) on prompt payment where the Company will follow English law and practice.

This communication is provided for informational purposes only and is neither an offer to purchase nor a solicitation of an offer to sell any securities of the Company pursuant to the Tender Offer or otherwise. The Tender Offer will only be made pursuant to the Circular and other related materials filed as part of the Tender Offer Statement on Schedule TO, in each case as may be amended or supplemented from time to time. The Company's security holders are advised to carefully read these documents, and any amendments to these documents, in their entirety before making any decision with respect to the Tender Offer, because these documents will contain important information. The Company's security holders may obtain copies of these documents and other documents filed with the SEC for free at the SEC's website at www.sec.gov. In addition, the Company will provide copies of such documents free of charge to its security holders.

In accordance with normal market practice in the UK and pursuant to Rule 14e-5(b)(12) under the Exchange Act, the Company or its nominees or brokers or Jefferies or its affiliates may from time to time make certain purchases of, or arrangements to purchase Ordinary Shares outside the United States, otherwise than pursuant to the Tender Offer, before or during the period in which the Tender Offer remains open for acceptance, such as in open market purchases at prevailing prices or privately negotiated purchases at negotiated prices. Such purchases, or arrangements to purchase will comply with all applicable rules in the UK, including the Listing Rules of the FCA and the Admission and Disclosure Standards of the London Stock Exchange. Any information about such purchases will be disclosed as required in the UK and the US and, if required, will be reported via a Regulatory Information Service and will be available to all investors (including US investors) on the London Stock Exchange website at .

Cautionary Note Regarding Forward-Looking Statements
This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. All statements contained in this press release that do not relate to matters of historical fact should be considered forward-looking statements, including without limitation statements that relate to our expectations around our therapeutic candidates and approach towards addressing major diseases, our future prospects, developments, and strategies, and statements regarding the intent, belief or current expectations regarding the Tender Offer. The forward-looking statements are based on current expectations and are subject to known and unknown risks, uncertainties and other important factors that could cause actual results, performance and achievements to differ materially from current expectations, including, but not limited to, those risks, uncertainties and other important factors described under the caption "Risk Factors" in our Annual Report on Form 20-F for the year ended December 31, 2023 filed with the SEC and in our other regulatory filings. These forward-looking statements are based on assumptions regarding the present and future business strategies of the Company and the environment in which it will operate in the future. Each forward-looking statement speaks only as at the date of this press release. Except as required by law and regulatory requirements, we disclaim any obligation to update or revise these forward-looking statements, whether as a result of new information, future events or otherwise.

Other Important Notices
This announcement is neither an offer to purchase nor a solicitation of an offer to sell Ordinary Shares (including Ordinary Shares represented by ADSs). The Tender Offer is made only pursuant to the Circular, the related Tender Form with respect to the Ordinary Shares and the related Letter of Transmittal with respect to the ADSs. The Tender Offer is not being made to, holders of Ordinary Shares (including Ordinary Shares represented by ADSs) residing in any jurisdiction in which the making of the Tender Offer would not be in compliance with the laws of that jurisdiction. In any jurisdiction where the securities, "blue sky", or other laws require the Tender Offer to be made by a licensed broker or dealer, the Tender Offer will be deemed to be made on behalf of Jefferies International Limited by one or more registered brokers or dealers licensed under the laws of such jurisdiction.

Jefferies, which is authorised and regulated by the Financial Conduct Authority in the United Kingdom ("FCA"), is acting exclusively for the Company as financial advisor and broker in connection with the Tender Offer and is not, and will not be, responsible to anyone other than the Company for providing the protections afforded to its clients nor for providing advice in connection with the Tender Offer or any other matters set out in this announcement.

Apart from the responsibilities and liabilities, if any, which may be imposed on Jefferies under the Financial Services and Markets Act 2000, as amended or the regulatory regime established thereunder: (i) neither Jefferies or any persons associated or affiliated with Jefferies accepts any responsibility whatsoever or makes any warranty or representation, express or implied, in relation to the contents of this announcement, including its accuracy, completeness or verification or for any other statement made or purported to be made by, or on behalf of it, the Company or the directors of the Company, in connection with the Company and/or the Tender Offer; and (ii) Jefferies accordingly disclaims, to the fullest extent permitted by law, all and any liability whatsoever, whether arising in tort, contract or otherwise (save as referred to above) which it might otherwise be found to have in respect of this announcement or any such statement.

PureTech Health plc

Proposed capital return of $100 million by way of a Tender Offer at 250 pence per Ordinary Share and Notice of General Meeting

1. INTRODUCTION

On 18 March 2024, the Company announced that it will receive approximately $293 million gross proceeds from the sale of its remaining stake in Karuna Therapeutics, Inc. ("Karuna") pursuant to the completed acquisition of Karuna by Bristol Myers Squibb which has acquired all outstanding common stock of Karuna.

On 19 March 2024, the Company announced a proposed capital return of $100 million to Shareholders by way of a Tender Offer and subsequent repurchase of Ordinary Shares (including Ordinary Shares represented by ADSs) by the Company at a fixed tender price of 250 pence per Ordinary Share. The capital return of $100 million represents approximately 14 percent of the Company's market capitalisation based on the Company's closing share price as at 18 March 2024, being the date prior to the announcement of the proposed Tender Offer.

The Company's $50 million share buyback program completed on 7 February 2024, which, together with the proposed Tender Offer, would constitute $150 million of capital returned to Shareholders, representing approximately 20 percent of the Company's market capitalisation as at 16 May 2024, being the Latest Practicable Date before publication of the Circular.

The fixed Tender Price of 250 pence per Ordinary Share (equivalent to £25.00 per ADS) represents:

• a premium of 25 percent to PureTech's trailing volume weighted average price per Ordinary Share over the three days prior to 19 March 2024, the date of PureTech's initial announcement of the Tender Offer proposals; and
• a premium of 12.6 percent to the closing price of 222 pence per Ordinary Share on the Latest Practicable Date.

Shareholders are not required to tender any or all of their Ordinary Shares (including Ordinary Shares represented by ADSs) if they do not wish to do so. There is no guarantee that the Tender Offer will return the full sum of $100 million to Shareholders. If the full $100 million is not returned through the Tender Offer, then, if there is sufficient surplus, the Board intends to return such surplus by way of a special dividend following completion of the Tender Offer, without interest, less any applicable withholding taxes and subject to market and industry conditions at the time and any relevant legal restrictions (the "Special Dividend").

Shareholder approval for the maximum number of Ordinary Shares which may be acquired and the fixed price at which Ordinary Shares may be acquired at a General Meeting to be held at 11:00 a.

PureTech Health plc
Public Relations
publicrelations@puretechhealth.com
Investor Relations
IR@puretechhealth.com

Jefferies International Limited
Ed Matthews
+44 (0)20 7548 4107
ematthews1@jefferies.com
Jee Lee
+44 (0)20 7029 8545
Jee.Lee@jefferies.com

UK/EU Media
Ben Atwell, Rob Winder
+44 (0) 20 3727 1000
puretech@fticonsulting.com

US Media
Nichole Bobbyn
+1 774 278 8273
nichole@tenbridgecommunications.com