str = {'XQPCTick;Tag '; ...
       '1552111181823;G8 Throw '; ...
       '1552327767233;G8 Throw '; ...
       '1552570758808;G8 Throw '; ...
       '1552819036603;G8 Throw '; ...
       '1553037382424;G8 Throw '; ...
       '1553238114161;G8 Throw '; ...
       '1553456459982;G8 Throw '; ...
       '1553687128680;G8 Throw '; ...
       '1553905469514;G8 Throw '; ...
       '1554100925005;G8 Throw '};
str = sprintf ('%s\n', str{:});
str(end) = [];
[A{1}, A{2}] = strread (str, '%s %s', 'Whitespace', ';');
B{1} = {'XQPCTick'; ...
        '1552111181823'; ...
        '1552327767233'; ...
        '1552570758808'; ...
        '1552819036603'; ...
        '1553037382424'; ...
        '1553238114161'; ...
        '1553456459982'; ...
        '1553687128680'; ...
        '1553905469514'; ...
        '1554100925005'};
B{2} = {'Tag '; ...
        'G8 Throw '; ...
        'G8 Throw '; ...
        'G8 Throw '; ...
        'G8 Throw '; ...
        'G8 Throw '; ...
        'G8 Throw '; ...
        'G8 Throw '; ...
        'G8 Throw '; ...
        'G8 Throw '; ...
        'G8 Throw '};
isequal (numel (A), 2)
isequal (A{1}, B{1})
isequal (A{2}, B{2})

