loop Will only open the files in starting folder

I want to create a script that opens a folder and goes in to every subfolder and pulls out .mat files. The following code only pulls out the .mat files that are located in the starting fold even though it gathers all sub folder directories. Any help would be greatly appreciated!

startingFolder = pwd;
root = uigetdir(startingFolder);
allSubfolders = genpath(root);
subFolders = regexp(allSubfolders, ';', 'split');

for subFolderCount = 3 : length(subFolders)
	% Get this subfolder.
	thisSubFolder = subFolders{subFolderCount};
	% Get a list of MAT files in this subfolder.
        matFiles = dir(fullfile(thisSubFolder, '*.mat'));
	
end

Answer 1

[Voss]

matFiles = dir(fullfile(pwd,'**','*.mat'));

[Bertrand]

Exactly what I needed.