$FSI

$6.47 +$0.21 (3.35%) Close

$FSI Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 12.8M shares outstanding

Who owns FSI?

By type of holder

Institutions 9.1% Insiders 36.1% Everyone else 54.9%

Concentration Top 10 holders own 43.9%

Daniel B. O'Brien 36.0% · Renaissance Technologies LLC 2.6%

Institutional ownership

9.1%

-0.4 pts vs last qtr

Institutional holders

-1 vs last qtr

Net shares bought

−52.2K

by institutions in Q2 2026

New / sold out

3 / 4

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Rothschild Wealth LLC +11.6K
BlackRock, Inc. +5.5K

Biggest sellers in Q2 2026

O'Shaughnessy Asset Management, LLC SOLD OUT −21.5K
Ritholtz Wealth Management SOLD OUT −13.9K

Who is planning to sell?

Notices of proposed sale, last 12 months

$748K

1 notice from 1 person

Shares covered

125.0K

0.98% of the company

Arranged in advance

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Daniel B. O'Brien Officer/director $748K

Every notice on Red Flags →

A Form 144 is notice of a planned sale, not the sale itself. What insiders actually sold is on Insider Transactions.

Is your stake being diluted?

Diluted share count, FY2016–FY2025

+16.8%

+1.74% a year

Each share's claim on the business

−14.4%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

$1.58M vs $2.93M

over 10 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years65% 3–5 years3% 1–3 years7% Under 1 year24%

Quarterly turnover

4.6%

of institutional shares changed hands

Top 10 managers, median time held

1.3 years

Super Investors

Investment managers reporting FSI on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
RT Renaissance Technologies LLC	329.8K	2.58%	−11.2K (−3.3%)	≤2021	0.0%
Shares held by quarter Peak holding390.6K (Q1'25) Change over 8 quarters−39.7K Share of the company2.580% Renaissance Technologies LLC's full portfolio →
VC Vanguard Capital Management LLC	282.1K	2.21%	+4.0K (+1.4%)	≤2021	0.0%
Shares held by quarter Peak holding282.1K (Q2'26) Change over 8 quarters+282.1K Share of the company2.210% Vanguard Capital Management LLC's full portfolio →

Renaissance Technologies LLC

329.8K

% of company

2.58%

Change vs last qtr

−11.2K (−3.3%)

Held since

≤2021

Vanguard Capital Management LLC

282.1K

% of company

2.21%

Change vs last qtr

+4.0K (+1.4%)

Held since

≤2021

27 more super investors behind a free account

See every manager holding Flexible Solutions International Inc, how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting FSI on Form N-PORT; together they hold 4.4% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$1.8M	270.5K	2.12%	0.00%	June 30, 2026
NS North Star Micro Cap Fund Northern Lights Fund Trust II	$599K	90.0K	0.70%	0.33%	May 31, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$1.8M

% of company

2.12%

% of the fund

0.00%

As of

June 30, 2026

North Star Micro Cap Fund

Northern Lights Fund Trust II

Position value

$599K

% of company

0.70%

% of the fund

0.33%

As of

May 31, 2026

19 more funds behind a free account

See every fund holding Flexible Solutions International Inc and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
DB Daniel B. O'Brien 5%+ holder 13D · 36.1%	4.6M	35.98%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company35.980% Disclosed stake13D · 36.1% View the 13D/G filing →
HR Helina Robert T Insider	10.0K	0.08%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.080% Helina Robert T's insider activity →

Daniel B. O'Brien

5%+ holder13D · 36.1%

4.6M

% of company

35.98%

Change vs last qtr

—

Held since

—

Helina Robert T

Insider

10.0K

% of company

0.08%

Change vs last qtr

—

Held since

—

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