Maybe you can try this:
grep -rl "OPEN" . --include='STATUS.txt'| sed 's/STATUS.txt//'
where grep -r means recursive , -l means only list the files matching,
'.' is the directory location. You can pipe it to sed to remove the file
You can then wrap this in a bash script file where you can pass in
keywords such as 'OPEN', 'FUTURE' as an argument.
grep -rl "$1" . --include='STATUS.txt'| sed 's/STATUS.txt//'