Clifford Sosin has bought stock on 40 days since Aug 2019

Clifford Sosin is a professional investor and 10% owner of Cardlytics, Inc. (NASDAQ: CDLX), where he has been an active corporate insider through CAS Investment Partners.( SEC Form 4 and related reports identify him as a significant shareholder who has accumulated and traded a large position in Cardlytics since 2019, including multiple transactions that have left him with an indirect beneficial stake of more than five million shares and holdings of the company’s 4.25% Convertible Senior Notes due 2029.( Through affiliated investment vehicles such as Sosin Master, L.P. and CSWR Partners, L.P., Sosin oversees substantial equity and convertible note positions in Cardlytics, reflecting a long‑term, high‑conviction investment approach.(

Sosin is the managing member of CAS Investment Partners, an investment firm through which he files beneficial ownership and insider trading reports with the U.S. Securities and Exchange Commission, and has sought an active role in Cardlytics’ governance, including a request for a seat on the company’s board via a Schedule 13D filing in June 2023.( Public portfolio data show that he has also held significant positions as a 10% owner in other companies such as Party City Holdco Inc. and At Home Group Inc., underscoring his specialization in concentrated, event‑driven and value‑oriented investments.( His SEC filings list a mailing address in Westport, Connecticut, indicating a U.S.‑based investment practice, though detailed educational and early‑career information is not disclosed in the available public records.(

Written by Perplexity from public sources.