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Livermore
Livermore
ZHEN

Research Solutions, Inc.

RSSS
Exchange
Nasdaq
Industry
Services-Business Services, NEC
SEC CIK
0001386301

No open-market purchases or sales by Research Solutions, Inc. insiders were filed in the last 90 days; 36 institutions reported holding it in 13F filings for Q2 2026, worth $25.4M in total; no superinvestor holds it.

Holders of 5% or more of RSSS

Holders whose latest Schedule 13D or 13G filing reports 5% or more of Research Solutions, Inc., largest stake first. The change is against the holder's previous filing.

Holders of 5% or more of RSSS
HolderLatest formStakeChangeFirst filedLatest filingFiling
Witmer Richard H.13G/A8.00%2.61M shares–Feb 5, 20213 filingsJan 18, 2024SEC
Punch & Associates Investment Management, Inc.13G7.20%2.33M sharesNewFeb 14, 20251 filingFeb 14, 2025SEC
Poplar Point Capital Management LLC13G/A7.08%2.33M shares+1.60 ppfrom 5.48%Jul 2, 20252 filingsMay 11, 2026SEC

Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.

13D and 13G filings

33 Schedule 13D and 13G filings on Research Solutions, Inc., newest first, including old-format filings without a stake.

Schedule 13D and 13G filings on RSSS
Filed (ET)FilerFormStakeChangeEvent dateFiling
May 11, 20264:32 PM ETPoplar Point Capital Management LLCand 3 others13G/A7.08%2.33M shares+1.60 ppfrom 5.48%Mar 31, 2026SEC
Jul 2, 20251:42 PM ETPoplar Point Capital Management LLCand 3 others13G5.48%1.78M sharesNewJun 30, 2025SEC
Feb 14, 202510:50 AM ETPunch & Associates Investment Management, Inc.13G7.20%2.33M sharesNewDec 31, 2024SEC
Feb 21, 2024Needham Investment Management LLC13GOld format–New–SEC
Feb 12, 2024Bristol Investment Fund Ltd13D/AOld format–––SEC
Feb 12, 2024Cove Street Capital, LLC13G/AOld format–––SEC
Jan 18, 20242:54 PM ETWitmer Richard H.13G/A8.00%2.61M shares–Dec 31, 2023SEC
Sep 19, 2023Cove Street Capital, LLC13D/AOld format–––SEC
Sep 19, 2023Derycz Peter13D/AOld format–––SEC
Aug 18, 2023Derycz Peter13D/AOld format–––SEC
Aug 15, 2023Cove Street Capital, LLC13DOld format–––SEC
Jul 31, 2023Derycz Peter13D/AOld format–––SEC
Feb 14, 2023Witmer Richard H.13G/AOld format–––SEC
Feb 10, 2023Cove Street Capital, LLC13G/AOld format–––SEC
Sep 28, 2022Cove Street Capital, LLC13G/AOld format–––SEC
Sep 23, 2022Cove Street Capital, LLC13D/AOld format–––SEC
Aug 12, 2022Cove Street Capital, LLC13D/AOld format–––SEC
Jun 28, 2022Cove Street Capital, LLC13D/AOld format–––SEC
Feb 10, 2022Vanguard Index Funds13G/AOld format–––SEC
Feb 10, 2022Vanguard Group Inc13G/AOld format–––SEC
Feb 8, 2022Samjo Capital LLC13G/AOld format–––SEC
Nov 5, 2021Cove Street Capital, LLC13DOld format–––SEC
Aug 16, 2021Derycz Peter13D/AOld format–––SEC
Feb 16, 2021Samjo Capital LLC13GOld format–––SEC
Feb 16, 2021Cowen Prime Services LLC13GOld format–New–SEC
Feb 12, 202112 West Capital Management LP13D/AOld format–––SEC
Feb 11, 2021Samjo Capital LLC13G/AOld format–––SEC
Feb 10, 2021Vanguard Group Inc13GOld format–New–SEC
Feb 8, 2021Bristol Investment Fund Ltd13D/AOld format–––SEC
Feb 8, 2021Vanguard Index Funds13GOld format–New–SEC
Feb 5, 2021Witmer Richard H.13G/AOld format–––SEC
Feb 3, 202112 West Capital Management LP13D/AOld format–––SEC
Feb 1, 2021Cove Street Capital, LLC13GOld format–New–SEC

Form 144: proposed insider sales

Notices from officers, directors and other affiliates planning to sell Research Solutions, Inc. shares.

No Form 144 notices for Research Solutions, Inc. are on file.