Ladies and Gentlemen:
The undersigned hereby tenders to Isochrone Merger Sub Inc., a Delaware corporation (“Merger Sub”) and wholly owned subsidiary of AstraZeneca Finance and Holdings Inc., a Delaware corporation (“Parent”), the above-described shares of common stock, par value $0.0001 per share (the “Shares”), of Icosavax, Inc., a Delaware corporation (the “Company”), for (i) $15.00 per Share in cash, subject to applicable withholding taxes and without interest (the “Closing Amount”), plus (ii) one non-transferable contingent value right (each, a “CVR”) per Share representing the right to receive a contingent payment of up to $5.00 in cash, subject to applicable withholding taxes and without interest, on the achievement of specified milestones on or prior to the applicable outside date, on the terms and subject to the other conditions set forth in, the Contingent Value Rights Agreement (the “CVR Agreement”) (the Closing Amount plus one CVR, collectively, or any greater amount per Share that may be paid pursuant to the Offer (as defined below), the “Offer Price”), on the terms and subject to the conditions set forth in the Offer to Purchase (as it may be amended, supplemented or otherwise modified from time to time, the “Offer to Purchase”) and in this Letter of Transmittal (as it may be amended, supplemented or otherwise modified from time to time, the “Letter of Transmittal,” which, together with the Offer to Purchase, as they may be amended, supplemented or otherwise modified from time to time, collectively constitute the “Offer”).
The Offer expires at the Expiration Time. “Expiration Time” means one minute after 11:59 p.m., New York City time, on January 26, 2024, unless the Offer is extended pursuant to and in accordance with the Agreement and Plan of Merger, dated as of December 11, 2023, by and among Parent, Merger Sub and the Company (as it may be amended, supplemented or otherwise modified from time to time, the “Merger Agreement”). In the event that the Offer is extended pursuant to and in accordance with the Merger Agreement, then the term “Expiration Time” means such subsequent time.
The undersigned hereby acknowledges that Merger Sub reserves the right to assign, in its sole discretion, in whole or in part, to any affiliate of Parent, without the consent of the Company, the right to purchase the Shares tendered herewith.
On the terms and subject to the conditions of the Offer (including, if the Offer is extended or amended, the terms and conditions of such extension or amendment), subject to, and effective upon, acceptance for payment of the Shares validly tendered herewith and not properly withdrawn prior to the Expiration Time in accordance with the terms of the Offer, the undersigned hereby sells, assigns and transfers to, or upon the order of, Merger Sub, all right, title and interest in and to all of the Shares being tendered hereby and any and all dividends, distributions, rights, other Shares or other securities issued or issuable in respect of such Shares on or after the date hereof (collectively, “Distributions”). In addition, the undersigned hereby irrevocably appoints Merger Sub as the true and lawful agent and attorney-in-fact and proxy of the undersigned with respect to such Shares and any and all Distributions with full power of substitution (such proxies and power of attorney being deemed to be an irrevocable power coupled with an interest in the tendered Shares and any Distributions) to the full extent of such stockholder’s rights with respect to such Shares and any Distributions (a) to deliver certificates representing such Shares (the “Share Certificates”) and any and all Distributions, or transfer of ownership of such Shares and any and all Distributions on the account books maintained by The Depository Trust Company (“DTC”), together, in either such case, with all accompanying evidence of transfer and authenticity, to or upon the order of Merger Sub, (b) to present such Shares and any and all Distributions for transfer on the books of the Company and (c) to receive all benefits and otherwise exercise all rights of beneficial ownership of such Shares and any and all Distributions, all upon the terms and subject to the conditions of the Offer.
By executing this Letter of Transmittal (or taking action resulting in the delivery of an Agent’s Message), the undersigned hereby irrevocably appoints each of the designees of Merger Sub the attorneys-in-fact and proxies of the undersigned, each with full power of substitution, to the full extent of such stockholder’s rights with respect to the Shares tendered hereby and not properly withdrawn which have been accepted for payment and with respect to any and all Distributions. The designees of Merger Sub will, with respect to such Shares and Distributions, be empowered to exercise all voting and any other rights of such stockholder, as they, in their sole discretion, may deem proper at any annual, special, adjourned or postponed meeting of the Company stockholders, by written consent in lieu of any such meeting or otherwise as such designee, in its, his or her sole discretion, deems proper with respect to all Shares and any and all Distributions. This proxy and power of attorney will be irrevocable and coupled with an interest in the