membership interest purchase agreement among virtus partners, inc., westchester capital partners, llc, westchester capital management, llc, mtswcm holdings, llc, rdbwcm holdings, llc, lpc westchester, lp and the individual equityholders ( as defined herein ) february 1, 2021 table of contents table of contents 2. 1 purchase and sale of the membership interests.......................................................... 22 2. 2 total purchase consideration...................................................................................... 22 2. 3 closing payment amount ; escrow.............................................................................. 22 2. 4 adjustments to the closing payment amount............................................................. 23 2. 5 retention payment....................................................................................................... 27 2.