UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

Report of Foreign Private Issuer

Pursuant to Rule 13a-16 or 15d-16 under

the Securities Exchange Act of 1934

For the month of November, 2021

Commission File Number 001-39670

PURETECH HEALTH PLC

(Translation of registrant’s name into English)

6 Tide Street, Suite 400

Boston, Massachusetts 02210

(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F  ☒                Form 40-F  ☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):  ☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7):  ☐

INFORMATION CONTAINED IN THIS REPORT ON FORM 6-K

On November 9, 2021, PureTech Health plc (LSE: PRTC, Nasdaq: PRTC) (the “Company”) issued a press release announcing, among other things, certain limited financial information about the Company as of September 30, 2021.

The press release is furnished herewith as Exhibit 99.1 and is incorporated by reference herein.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Exhibit 99.1

9 November 2021

PureTech Health plc

PureTech Announces Participation at the Jefferies London Healthcare Conference

Company reports PureTech Level Cash and Cash Equivalents of $387.3 million¹ and Consolidated Cash and Cash Equivalents of $441.0 million² as of September 30, 2021

PureTech Health plc (Nasdaq: PRTC, LSE: PRTC) (“PureTech” or the “Company”), a clinical-stage biotherapeutics company dedicated to discovering, developing and commercializing highly differentiated medicines for devastating diseases, today announced that Bharatt Chowrira, Ph.D., J.D., President and Chief of Business and Strategy and George Farmer, Ph.D., Chief Financial Officer, will participate in a fireside chat at the Jefferies London Healthcare Conference on Wednesday, November 17, 2021, at 7:20 AM EST. A webcast of the presentation will be available at https://investors.puretechhealth.com/events-presentations.

Additionally, the Company reported PureTech Level Cash and Cash Equivalents of $387.3 million and Consolidated Cash and cash equivalents of $441.0 million as of September 30, 2021.³ PureTech’s Founded Entities are also well-capitalized, having raised over $1.6 billion since July 2018, 96% of which came from third-party investors.⁴

Non-IFRS Financial Measures

PureTech Level Cash and Cash Equivalents is an alternative performance measure which is adjusted and constitutes a non-IFRS measure. We believe that these non-IFRS performance measures, when provided in combination with IFRS measures, will provide investors, analysts and other stakeholders with helpful complementary information to better understand our financial position from period to period. The measures are also used by management for planning and reporting purposes. The measures are not substitutable for IFRS measures and should not be considered superior to measures presented in accordance with IFRS.

PureTech Level Cash and Cash Equivalents is defined as cash and cash equivalents held at PureTech Health plc and its wholly-owned subsidiaries only. Please see below for a reconciliation to Consolidated Cash and cash equivalents, which is the most directly comparable measure calculated in accordance with IFRS.

About PureTech Health

PureTech is a clinical-stage biotherapeutics company dedicated to discovering, developing and commercializing highly differentiated medicines for devastating diseases, including inflammatory, fibrotic and immunological conditions, intractable cancers, lymphatic and gastrointestinal diseases and neurological and neuropsychological disorders, among others. The Company has created a broad and deep pipeline through the expertise of its experienced research and development team and its extensive network of scientists, clinicians and industry leaders. This pipeline, which is being advanced both internally and through PureTech’s Founded Entities, is comprised of 25 therapeutics and therapeutic candidates, including two that have received both U.S. FDA clearance and European marketing authorization, as of the date of PureTech’s most recently filed Half Year Report and corresponding Form 6-K. 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 based on the Company’s unique insights into the biology of the brain, immune and gut, or BIG, systems and the interface between those systems, referred to as the BIG Axis.

For more information, visit www.puretechhealth.com or connect with us on Twitter @puretechh.

Cautionary Note Regarding Forward-Looking Statements

This press release contains statements that are or may be 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, our participation in upcoming events and presentations. 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, 2020 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.

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