X0306 4 2020-10-26 0 0001823200 BCLS Acquisition Corp. BLSA 0001657434 Hack Andrew A. F. C/O BCLS ACQUISITION CORP. 200 CLARENDON STREET BOSTON MA 02116 1 1 1 0 Chief Financial Officer Class A ordinary shares 2020-10-26 4 A 0 487500 10.00 A 487500 I See Footnote The reported Class A ordinary shares were purchased from the Issuer in a private placement by BCLS Acquisition Holdings, LP (the "Sponsor") for $10.00 per share, as described in the Issuer's registration statement on Form S-1 (File No. 333-249284). The shares are held by the Sponsor. The Sponsor is controlled by its general partner, BCLS Acquisition Holdings (GP), LLC (the "General Partner"), which is governed by a board of managers consisting of three managers. Each manager has one vote, and the approval of a majority of the managers is required to approve an action on behalf of the Sponsor. Andrew Hack serves on the board of managers of the General Partner. As a result, Dr. Hack may be deemed to share beneficial ownership of the shares held by the Sponsor. Dr. Hack disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein. /s/ Andrew Hack 2020-10-26