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$TOMZ
$1.49 +$0.06 (4.56%) Close

Ownership

13F as of Q2 2026 · 8.1M shares outstanding

Who owns TOMZ?

By type of holder
Institutions 13.7% Insiders 8.5% Everyone else 77.9%
Concentration Top 10 holders own 19.9%
Vanguard Capital Management LLC 7.4% · Lim Boh Soon 2.6%
Institutional ownership
13.7%
+1.7 pts vs last qtr
Institutional holders
19
+3 vs last qtr
Net shares bought
+139.0K
by institutions in Q2 2026
New / sold out
6 / 3
positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026
  • Citadel Advisors LLC NEW +108.8K
  • Vanguard Fiduciary Trust Co +34.8K

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Biggest sellers in Q2 2026
  • Vanguard Capital Management LLC −78.4K
  • Commonwealth Equity Services, LLC SOLD OUT −11.1K

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Who is planning to sell?

No insider has filed a notice of proposed sale (Form 144) for TOMI Environmental Solutions Inc in the last 12 months.

Is your stake being diluted?

Diluted share count, FY2013–FY2025
+107.4%
+8.44% a year
Each share's claim on the business
−51.8%
shrank without buying or selling a share
Spent on buybacks vs paid in stock
— vs $8.77M
over 10 fiscal years
Diluted shares, split-adjusted
9.4M14.8M20.3M2013: 9.7M shares'132014: 15.9M shares'142015: 12.9M shares'152019: 15.6M shares'192020: 18.8M shares'202021: 17.5M shares'212022: 19.7M shares'222023: 19.8M shares'232024: 20.0M shares'242025: 20.1M shares'25
Buybacks Stock-based comp
$0$1.6M$3.1M2013 buybacks: $02013 stock comp: $148.8K'132014 buybacks: $02014 stock comp: $2.6M'142015 buybacks: $02015 stock comp: $1.7M'152019 buybacks: $02019 stock comp: $114.2K'192020 buybacks: $02020 stock comp: $3.1M'202021 buybacks: $02021 stock comp: $0'212022 buybacks: $02022 stock comp: $653.8K'222023 buybacks: $02023 stock comp: $163.3K'232024 buybacks: $02024 stock comp: $144.3K'242025 buybacks: $02025 stock comp: $147.0K'25

How patient are the owners?

Institutional shares by how long they've been held
5+ years81% 3–5 years0% 1–3 years4% Under 1 year15%
Quarterly turnover
17.0%
of institutional shares changed hands
Top 10 managers, median time held
5 years

Super Investors

Investment managers reporting TOMZ on Form 13F
VC
Vanguard Capital Management LLC
Shares
600.9K
% of company
7.38%
Change vs last qtr
−78.4K (−11.5%)
Held since
≤2021
GC
Geode Capital Management, LLC
Shares
125.4K
% of company
1.54%
Change vs last qtr
−2.6K (−2.0%)
Held since
≤2021

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Institutional Funds

Mutual funds and ETFs reporting TOMZ on Form N-PORT; together they hold 8.7% of the company
VT
Vanguard Total Stock Market Index Fund
Vanguard Index Funds
Position value
$391K
% of company
5.82%
% of the fund
0.00%
As of
June 30, 2026
VE
Vanguard Extended Market Index Fund
Vanguard Index Funds
Position value
$74K
% of company
1.10%
% of the fund
0.00%
As of
June 30, 2026

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Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G
LB
Lim Boh Soon
Insider
Shares
208.5K
% of company
2.56%
Change vs last qtr
—
Held since
—
JW
Johnsen Walter C
Insider
Shares
130.4K
% of company
1.60%
Change vs last qtr
—
Held since
—

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