X0306 4 2021-11-03 1 0001043000 CAPITAL SENIOR LIVING CORP CSU 0001804502 Ortelius Advisors, L.P. 450 PARK AVENUE, SUITE 2700 NEW YORK NY 10022 0 0 1 0 0001645708 Pangaea Ventures, L.P. C/O ORTELIUS ADVISORS, L.P. 450 PARK AVENUE, SUITE 2700 NEW YORK NY 10022 0 0 1 0 0001804470 DeSorcy Peter 450 PARK AVENUE, SUITE 2700 NEW YORK NY 10022 0 0 1 0 Common Stock 2021-11-03 4 P 0 305055 30.00 A 582478 I See footnotes These shares are beneficially owned by Pangaea Ventures, L.P. ("Pangaea"). Ortelius Advisors, L.P. (the "Adviser") is the investment manager of Pangaea. Peter DeSorcy is the sole member of the general partner of the Adviser, and Mr. DeSorcy has a controlling interest in the Adviser. The Adviser and Mr. DeSorcy disclaim beneficial ownership of any of the shares of common stock owned by Pangaea, except to the extent of their pecuniary interest therein. Represents the number of shares of Common Stock that the Reporting Persons purchased pursuant to the Issuer's rights offering. Following the transactions reported herein, for the purposes of Section 16, the Reporting Persons ceased to beneficially own 10% or more of the outstanding shares of Common Stock of the Issuer. ORTELIUS ADVISORS, L.P. By: Ortelius Management, LLC, its general partner By: /s/ Peter DeSorcy Name: Peter DeSorcy Title: Managing Member 2021-11-05 PANGAEA VENTURES, L.P. By: Ortelius Advisors GP I, LLC, its general partner By: /s/ Peter DeSorcy Name: Peter DeSorcy Title: Managing Member 2021-11-05 /s/ Peter DeSorcy 2021-11-05