Information about the directors and executive officers of resTORbio is set forth in its Annual Report on Form 10-K for the year ended December 31, 2019, which was filed with the SEC on March 12, 2020, its proxy statement for its 2020 annual meeting of stockholders, which was filed with the SEC on March 27, 2020 and in subsequent documents filed with the SEC. Additional information regarding the persons who may be deemed participants in the proxy solicitations and a description of their direct and indirect interests, by security holdings or otherwise, will also be included in the Form S-4, the Proxy Statement and other relevant materials to be filed with the SEC when they become available. You may obtain free copies of this document as described above.