BAKER BROS. ADVISORS LP sold IGMS

Footnotes

Reflects the completion of a tender offer by Concentra Biosciences, LLC (the "Parent"), to purchase all of the issued and outstanding shares of voting and non-voting common stock ("Shares") of the IGM Biosciences, Inc. (the "Issuer") for (i) $1.247 per Share in cash plus (ii) one non-transferable contractual contingent value right for each Share in connection with the consummation of the transactions (the "Merger") contemplated by the Agreement and Plan of Merger, dated as of July 1, 2025, by and among the Issuer, the Parent and Concentra Merger Sub V, Inc. ("Merger Sub"), a wholly owned subsidiary of Parent, pursuant to which, at the effective time of the Merger on August 14, 2025, Merger Sub merged with and into the Issuer, with the Issuer surviving as a subsidiary of Parent.; As a result of their ownership interest in (i) Baker Biotech Capital, L.P. and (ii) 667, L.P. ("667"), Julian C. Baker and Felix J. Baker each may have been deemed to have had an indirect pecuniary interest in common stock of the Issuer ("Common Stock") reported as disposed in Table I and securities reported as disposed in Table II that were held directly by or that were held for the benefit of 667, a limited partnership of which the sole general partner is Baker Biotech Capital, L.P., a limited partnership of which the sole general partner is Baker Biotech Capital (GP), LLC, due to their interest in 667 and Baker Biotech Capital, L.P.'s right to receive an allocation of a portion of the profits from 667.; Baker Bros. Advisors LP (the "Adviser") serves as the investment adviser to 667 and Baker Brothers Life Sciences, L.P. ("Life Sciences", and togeher with 667, the "Funds"). In connection with the services provided by the Adviser, the Adviser receives an asset-based management fee that does not confer any pecuniary interest in the securities held directly by the Funds or for the benefit of the Funds. The Adviser GP is the Adviser's sole general partner. Julian C. Baker and Felix J. Baker are managing members of the Adviser GP. The Adviser has complete and unlimited discretion and authority with respect to the investment and voting power of the securities held directly by the Funds or for the benefit of the Funds. The general partners of the Funds relinquished to the Adviser all discretion and authority with respect to the investment and voting power of the securities held directly by the Funds or for the benefit of the Funds.; Julian C. Baker, Felix J. Baker, the Adviser GP and the Adviser disclaim beneficial ownership of the securities held directly by the Funds or for the benefit of the Funds except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that any of Julian C. Baker, Felix J. Baker, the Adviser GP or the Adviser is or was a beneficial owner of such securities for purposes of Section 16 or any other purpose.; Includes the disposal of 12,098 shares of Common Stock previously issued to Felix J. Baker pursuant to the Issuer's Outside Director Compensation Policy (the "Stock Incentive Plan") in lieu of director retainer fees in his previous capacity as a director of the Issuer and 892 shares of Common Stock previously issued to Dr. Kelvin Neu, a former employee of the Adviser, pursuant to the Stock Incentive Plan in lieu of director retainer fees, and 11,210 shares of Common Stock received previously from the exercise of 11,210 non-qualified options exercisable solely into Common Stock ("Stock Options") that were issued to Dr. Neu in his previous capacity as a director of the Issuer, of which the Funds were deemed to own a portion.; Pursuant to the policies of the Adviser, Felix J. Baker does not have any right to any of the Issuer's securities issued as compensation for his previous service on the board of directors of the Issuer (the "Board") and Dr. Neu, a former employee of the Adviser, does not have any right to any of the Issuer's securities issued as compensation for his previous service on the Board and the Funds were entitled to an indirect proportionate pecuniary interest in the Stock Options and restricted stock units (each an "RSU"). Solely as a result of their ownership interest in (i) the general partners of the Funds and (ii) the Funds, Felix J. Baker and Julian C. Baker may have been deemed to have had an indirect pecuniary interest in the Stock Options, RSUs and any Common Stock acquired upon the exercise of Stock Options or vesting of RSUs (i.e. no direct pecuniary interest).; Pursuant to the policies of the Adviser, the Adviser has voting and dispositive power over the Common Stock received in lieu of director retainer fees, Stock Options, RSUs and any Common Stock received as a result of the exercise of Stock Options.