FSI · AMEX · Chemicals - Specialty

Flexible Solutions International

Makes polyaspartate polymers, specialty fertilizers, and confidential food ingredients.

$5.81
After-hours close0.00 (0.00%)
At close$5.81(−2.11%)

Breakdown13F · Form 4

Institutions 9.49%Insiders

Shares outstanding 12.75M · Float 8.09M · 63.4% free float

Top shareholders13F · 13D/G · Form 4

HolderShares% outstandingFormFiled
Daniel B. O'Brien4.60M36.10%13DFeb 11, 2026
Comprehensive Financial Planning, Inc.1.26M10.10%13GJan 24, 2025
Renaissance Technologies LLC340.9K2.67%13FMay 14, 2026
Vanguard Capital Management LLC278.2K2.18%13FMay 15, 2026
Dimensional Fund Advisors LP92.3K0.72%13FMay 7, 2026

Institutions13F, as of Mar 31, 2026

31 holders · 1.21M shares · 7 new positions · 19 increased · 3 reduced · 6 closed

HolderShares% outstandingChg q/qFiled
Renaissance Technologies LLC340.9K2.67%+7.8KMay 14, 2026
Vanguard Capital Management LLC278.2K2.18%+278.2KnewMay 15, 2026
Dimensional Fund Advisors LP92.3K0.72%+5.5KMay 7, 2026
North Star Investment Management Corp.90.0K0.71%+90.0KnewApr 23, 2026
Beartown Capital Management, LLC74.8K0.59%0May 14, 2026
Regal Investment Advisors LLC43.2K0.34%+8.2KMay 14, 2026
Citadel Advisors LLC37.2K0.29%+2.4KMay 15, 2026
Essex Investment Management Co LLC26.3K0.21%0May 11, 2026

Beneficial owners13D/G · 5% or more, as filed

Holder% of classSharesFormFiled
Daniel B. O'Brien36.10%4.60M13DFeb 11, 2026
Comprehensive Financial Planning, Inc.10.10%1.26M13GJan 24, 2025

InsidersForm 4

Latest trades

Nothing filed in the last 12 months.

CongressHouse and Senate disclosures

Not reported.