13D Filing: Radix Partners Llc and Capital Senior Living Corp (NYSE:CSU)

This Amendment No. 5 to Schedule 13D amends and supplements the Schedule 13D, filed with the Securities and
Exchange Commission (the SEC) on October 9, 2015, Amendment No. 1 thereto, filed with the SEC on December 10, 2015, Amendment No. 2 thereto, filed with the SEC on January 26, 2016, Amendment No. 3 thereto,
filed with the SEC on March 22, 2016, and Amendment No. 4 thereto, filed with the SEC on March 13, 2017, on behalf of the Reporting Persons with respect to the shares of common stock, par value $0.01 per share (the Common
Stock), of Capital Senior Living Corporation, a Delaware corporation (the Issuer). This Amendment No. 5 constitutes an exit filing on behalf of the Reporting Persons.

Item 5. Interest in Securities of the Issuer

Item 5 is amended and supplemented to add the following information for updating as of the date hereof:

(a), (b) HCRE beneficially owns in the aggregate 517,495 shares of Common Stock. Each of Radix, Mr. Packwood and Mr. Tanger may
be deemed to beneficially own the shares of Common Stock owned by HCRE. As of April 5, 2017, certain members of HCRE (including Carpe Diem Investment Holdings LLC) withdrew as members of HRCE and are no longer members of HCRE or parties to the
operating agreement of HCRE, and as a result thereof, neither Radix nor any of the other Reporting Persons has any consent or other rights with respect to securities of the Issuer held by such withdrawing members. Based upon a total of 30,035,019
outstanding shares of Common Stock as of February 24, 2017, as reported in the Issuers annual report on Form 10-K for the fiscal year ended December 31, 2016, the Reporting Persons shares represent approximately 1.723% of the
outstanding shares of Common Stock. Each of Radix, Mr. Packwood and Mr. Tanger disclaim beneficial ownership of the shares of Common Stock held by HCRE.

As of the date hereof, no Reporting Person owns any shares of Common Stock other than those set forth in this Item 5.

(c) On April 5, 2017, certain members of HCRE withdrew as members of HRCE, and in connection therewith, on April 6, 2017, HRCE made
an in-kind distribution of 1,361,334 shares of Common Stock to such withdrawing members. For purposes of such distribution, such shares of Common Stock were valued at $13.83 per share.

(d) No person other than the Reporting Persons has the right to receive or the power to direct the receipt of dividends from, or the proceeds
from the sale of, the shares of Common Stock set forth above.

(e) On April 6, 2017, the Reporting Persons ceased to be the beneficial
owners of more than 5% of the Common Stock.