PULM 2022 Proxy Statement

33 PROPOSAL 2: RATIFICATION OF THE APPOINTMENT OF MARCUM LLP AS OUR INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM FOR THE 2021 FISCAL YEAR The Audit Committee of the Board has selected Marcum LLP as our independent registered public accounting firm for the fiscal year ending December 31, 2022, and the Board has directed that management submit the selection of independent registered public accountants for ratification by the stockholders at the Annual Meeting. Stockholder ratification of the selection of Marcum LLP as our independent registered public accounting firm is not required by our Bylaws or otherwise. However, the Board is submitting the selection of Marcum LLP to the stockholders for ratification as a matter of good corporate practice. If the stockholders fail to ratify the selection, the Audit Committee will reconsider whether or not to retain Marcum LLP. Even if the selection is ratified, the Audit Committee, at its discretion, may direct the appointment of a different independent registered public accounting firm at any time during the year if it determines that such a change would be in the best interests of the Company and its stockholders. Required Vote and Board Recommendation The affirmative vote of a majority of the shares present cast for or against the proposal is required to ratify the appointment of Marcum LLP as our independent registered public accounting firm for the fiscal year ending December 31, 2022. If your shares are held by a broker and you do not give the broker specific instructions on how to vote your shares, your broker may vote your shares at its discretion. Abstentions will have no effect on the outcome of the vote on this proposal. The Board recommends that you vote “FOR” the ratification of Marcum LLP as our independent registered public accounting firm for the 2022 fiscal year. Marcum LLP Representatives at Annual Meeting We expect that representatives of Marcum LLP will be present telephonically at the Annual Meeting. They will be given the opportunity to make a statement if they desire to do so, and they will be available to respond to appropriate questions after the Annual Meeting.

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