TSS, Inc. (TSSI) Holders & Ownership

TSS, Inc. (TSSI) ownership: MHW Capital Management, LLC 25% · institutions 35% · index and ETF funds 4% (13F 2026-03-31). Insider activity, 90 days: 0 sales, 0 open-market buys. SEC EDGAR first-party data.

Top Institutional Holders (13F, rolled up by parent)

Source: SEC Form 13F
HolderSharesMarket Value% OutstandingReported
BlackRock1770890.00$23.04M6.3%2026-03-31
Vanguard1268241.00$16.50M4.5%2026-03-31
Raymond James307395.00$8.86M1.1%2026-03-31
Jane Street658081.00$8.56M2.3%2026-03-31
Geode Capital Management575609.00$7.49M2.1%2026-03-31
UBS521598.00$6.79M1.9%2026-03-31
Value Aligned Research Advisors, LLC460510.00$5.99M1.6%2026-03-31
State Street425254.00$5.53M1.5%2026-03-31

Insider Trading Activity (Form 4)

Source: SEC Form 4
InsiderTransactionValueDate
Sellnull2026-06-27
Sellnull2026-06-01
Sellnull2026-05-29
Sellnull2026-05-29
Sellnull2026-05-06
Sellnull2026-04-22
Sellnull2026-04-16
Sellnull2026-04-14

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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.