Disclaimer

Additional Information and Where to Find It / Non-Solicitation

In connection with the proposed transaction, CM Life Sciences II intends to file a proxy statement with the U.S. Securities and Exchange Commission (“SEC”). The proxy statement/prospectus will be sent to the stockholders of CM Life Sciences II. CM Life Sciences II and SomaLogic also will file other documents regarding the proposed transaction with the SEC. Before making any voting decision, investors and security holders of CM Life Sciences II are urged to read the proxy statement/prospectus and all other relevant documents filed or that will be filed with the SEC in connection with the proposed transaction as they become available because they will contain important information about the proposed transaction. Investors and security holders will be able to obtain free copies of the proxy statement/prospectus and all other relevant documents filed or that will be filed with the SEC by CM Life Sciences II and SomaLogic through the website maintained by the SEC at www.sec.gov.

Participants in Solicitation

CM Life Sciences II and SomaLogic and their respective directors and executive officers may be deemed to be participants in the solicitation of proxies from CM Life Sciences II’s shareholders in connection with the proposed transaction. Information about CM Life Sciences II’s directors and executive officers and their ownership of CM Life Sciences II’s securities is set forth in CM Life Sciences II’s filings with the SEC. To the extent that holdings of CM Life Sciences II’s securities have changed since the amounts printed in CM Life Sciences II’s Registration Statement on Form S-1, such changes have been or will be reflected on Statements of Change in Ownership on Form 4 filed with the SEC. A list of the names of such directors and executive officers and information regarding their interests in the business combination will be contained in the proxy statement/prospectus when available. You may obtain free copies of these documents as described in the preceding paragraph.

No Offer or Solicitation

These communications do not constitute an offer to sell or the solicitation of an offer to buy any securities, or a solicitation of any vote or approval, nor shall there be any sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offering of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act, or an exemption therefrom.