Form SC 13G/A Research Solutions, Inc. Filed by: VANGUARD GROUP INC Feb 10, 2022 09:08AM
Form SC 13G/A Research Solutions, Inc. Filed by: VANGUARD INDEX FUNDS Feb 10, 2022 08:49AM
Form SC 13G Research Solutions, Inc. Filed by: VANGUARD GROUP INC Feb 10, 2021 11:53AM
Form SC 13G Research Solutions, Inc. Filed by: VANGUARD INDEX FUNDS Feb 8, 2021 10:38AM