FOREIGN STOCK SALE WITH NO 1099-B WITH MULTIPLE BUYS, SALES AND SPLIT

[BOSCO4]

TRYING TO FIGURE OUT MY COST BASIS IN TT. FOR THIS ONE ETF

01/08/2014 PURCHASE 35 SHARES FOR $2,886.09

11/22/2017 SOLD           10 SHARES FOR $1570.00

08/22/2018 PURCHASE 20 SHARES FOR $3422.59

04/22/2020 SOLD           21 SHARES FOR $4110.33

07/19/2021 STOCK SPLIT + 120 SHARES FOR $1

03/21/2023 SOLD ALL 144 SHARES FOR $7444.80

How do I calculate my cost basis for the 144 shares sold?

Thank You