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TOMZ · NASDAQ · Industrial - Pollution & Treatment Controls

TOMI Environmental Solutions (TOMZ)

Disinfection and decontamination systems built around SteraMist ionized hydrogen peroxide.

$1.69
At close+0.06 (+3.68%)

Breakdown13F · 13D/G · Form 4

Institutions16 holders · as of Mar 31, 20264.21%324.2K shares
Insiders6 holders · as of Apr 23, 20262.99%230.2K shares
Otherremainder92.80%7.15M shares

7.70M company shares as of Aug 21, 2026 · institutions as of Mar 31, 2026 · holders as of their latest filing

The share count has not been confirmed by a second filing; stakes use it as it stands.

Top shareholders13F · 13D/G · Form 4

HolderStakeSharesEvidence
Vanguard Capital Management LLCInstitution
2.94%679,24113Fas of Mar 31, 2026
Boh Soon LimInsiderdirector
0.90%69,508Form 4filed Apr 23, 2026
Kelly AndersonInsiderdirector
0.56%43,458Form 4filed May 13, 2025
Walter C. JohnsenInsiderdirector
0.56%43,458Form 4filed May 13, 2025
Geode Capital Management, LLCInstitution
0.55%128,04813Fas of Mar 31, 2026
David Cecil VanstonInsiderofficer: Chief Financial Officer
0.43%33,333Form 4filed Oct 8, 2025
Harold PaulInsiderdirector
0.40%30,433Form 4filed Apr 23, 2026
State Street CorpInstitution
0.23%52,20913Fas of Mar 31, 2026
Vanguard Fiduciary Trust CoInstitution
0.17%39,59213Fas of Mar 31, 2026
Francesco FragassoInsiderdirector
0.13%10,000Form 4filed Apr 23, 2026
Choreo, LLCInstitution
0.08%19,04613Fas of Mar 31, 2026
Northern Trust CorpInstitution
0.07%15,83513Fas of Mar 31, 2026
Spinnaker Investment Group, LLCInstitution
0.06%14,73813Fas of Mar 31, 2026
Commonwealth Equity Services, LLCInstitution
0.05%11,05913Fas of Mar 31, 2026
Vanguard Global Advisers, LLCInstitution
0.02%4,43213Fas of Mar 31, 2026
UBS Group AGInstitution
0.02%4,06213Fas of Mar 31, 2026
Tower Research Capital LLC (TRC)Institution
0.02%3,93213Fas of Mar 31, 2026
Allworth Financial LPInstitution
0.00%34413Fas of Mar 31, 2026
Citigroup IncInstitution
0.00%1613Fas of Mar 31, 2026
BlackRock, Inc.Institution
0.00%313Fas of Mar 31, 2026
Morgan StanleyInstitution
0.00%113Fas of Mar 31, 2026
Sbi Securities Co., Ltd.Institution
0.00%113Fas of Mar 31, 2026
John F. NelsonInsider
5.14% of class, as filed13D/Gfiled May 8, 2024
Morgan Stephen L.Insider
7.30% of class, as filed13Gfiled Jul 23, 2025
Dr. Halden Stuart Shane1Insiderdirector, 10 percent owner, officer: CEO
10.99%846,055Form 4filed Aug 23, 2023
  1. Last filed Aug 23, 2023; leaving the company requires no filing. Not in the bar.

13F — a manager's quarterly holdings · 13D/13G — an ownership statement filed at 5% or more · Form 4 — an insider's transaction report

Institutions13F, as of Mar 31, 2026

16 holders · 972.6K shares · 4 new positions · 5 increased · 3 reduced · 6 closed

HolderShares% outstandingChg q/qFiled
Vanguard Capital Management LLC679.2K8.82%+679.2KnewMay 15, 2026
Geode Capital Management, LLC128.0K1.66%−5.7KMay 15, 2026
State Street Corp52.2K0.68%0May 15, 2026
Vanguard Fiduciary Trust Co39.6K0.51%+39.6KnewMay 8, 2026
Choreo, LLC19.0K0.25%0May 13, 2026
Northern Trust Corp15.8K0.21%0May 14, 2026
Spinnaker Investment Group, LLC14.7K0.19%0Apr 8, 2026
Commonwealth Equity Services, LLC11.1K0.14%0Apr 27, 2026

Ownership statements13D/G · 5% or more, as filed

Holder% of classSharesFormFiled
Morgan Stephen L.7.30%13GJul 23, 2025

Insider tradesForm 4

Latest trades

No open-market trades in the last 12 months.

CongressHouse and Senate disclosures

Not reported.