Flexible Solutions (FSI) notifies SEC of late 10-K, plans to file under Rule 12b-25

Rhea-AI Filing Summary

Flexible Solutions International, Inc. notified the SEC it could not timely file its Form 10-K for the period ended December 31, 2025 because the company could not provide certain documentation and supporting schedules to its independent auditors in time. The company expects to file within the extension period provided by Rule 12b-25.

Key Figures

Period ended: December 31, 2025 Signature date: March 31, 2026 Rule 12b-25 annual extension: 15 calendar days +1 more

4 metrics

Period ended December 31, 2025 Subject reporting period for the delayed Form 10-K

Signature date March 31, 2026 Date the Form 12b-25 was signed by CEO Daniel O’Brien

Rule 12b-25 annual extension 15 calendar days Extension period referenced for annual reports under Rule 12b-25

Rule 12b-25 quarterly extension 5 calendar days Extension period referenced for quarterly reports under Rule 12b-25

Key Terms

Rule 12b-25, Form 10-K, independent registered public accounting firm

3 terms

Rule 12b-25 regulatory

"expects to file the Form10-K within the extension period provided by Rule 12b-25."

Rule 12b-25 is an SEC filing provision that lets a company notify regulators and the public that it cannot file a required periodic report (like a quarterly or annual report) on time and explains the reason for the delay. For investors, the notice is a formal heads-up that financial information will arrive late—similar to a company calling to say it will be late turning in homework—so it signals increased uncertainty and may affect trading and risk assessments until the filing is available.

Form 10-K regulatory

"The Company is working to provide the outstanding documentation and expects to file the Form10-K"

A Form 10-K is a comprehensive report that publicly traded companies are required to file annually with regulators. It provides a detailed overview of a company's financial health, operations, and risks, similar to a detailed health report. Investors use this information to assess the company's performance and make informed decisions about buying or selling its stock.

independent registered public accounting firm financial

"could not provide certain requested documentation and supporting schedules to its independent registered public accounting firm"

An independent registered public accounting firm is an outside accounting company officially registered with the government regulator to examine and report on a public company's financial records and controls. Investors treat its reports like an impartial inspector’s certificate — they add credibility to financial statements, help spot errors or misleading claims, and reduce the risk that shareholders are relying on unchecked or biased numbers.

U.S. SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

SEC File Number ___________

CUSIP Number _____________

FORM 12b-25

NOTIFICATION OF LATE FILING

(Check One):

☒ Form 10-K ☐ Form 20-F ☐ Form 11-K ☐ Form 10-Q ☐ Form 10-D ☐ Form N-SAR

For Period Ended: December 31, 2025

☐ Transition Report on Form 10-K

☐ Transition Report on Form 10-Q

For the Transition Period Ended: ________________________________

Nothing in this Form shall be construed to imply that the Commission has verified any information contained herein.

Part I - Registrant Information

Full Name of Registrant: FLEXIBLE SOLUTIONS INTERNATIONAL, INC.

Former Name if Applicable: N/A

Address of Principal Executive Office (Street and Number)

6001 54 Ave.

City, State and Zip Code

Taber, Alberta, Canada T1G 1X4

Part II - Rules 12b-25(b) and (c)

If the subject report could not be filed without unreasonable effort or expense and the registrant seeks relief pursuant to Rule 12b-25(b), the following should be completed. (Check box if appropriate)

☒	(a)	The reasons described in reasonable detail in Part III of this form could not be eliminated without unreasonable effort or expense;
☒	(b)	The subject annual report, semi-annual report, or transition report or portion thereof will be filed on or before the fifteenth calendar day following the prescribed due date; or the subject quarterly report or transition report on Form l0-K or portion thereof will be filed on or before the fifth calendar day following the prescribed due date; and
☒	(c)	The accountant’s statement or other exhibit required by Rule 12b-25(c) has been attached if applicable.

Part III - Narrative

State below in reasonable detail the reasons why the Form 10-K, 20-F, 11-K, 10-Q, or N-SAR, or the transition report or portion thereof could not be filed within the prescribed time period.

The delay is due to the Company’s inability to provide certain requested documentation and supporting schedules to its independent registered public accounting firm in a timely manner. As a result of this delay in receiving the necessary information, the auditors have not had sufficient time to complete their audit procedures. The Company is working to provide the outstanding documentation and expects to file the Form10-K within the extension period provided by Rule 12b-25.

Part IV - Other Information

(1) Name and telephone number of person to contact in regard to this notification

William T. Hart		(303)		839-0061
(Name)		(Area Code)		(Telephone Number)

	(2)	Have all other periodic reports required under Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding l2 months (or for such shorter period that the registrant was required to file such reports) been filed? If answer is no, identify report(s).
		☒ Yes ☐ No

	(3)	Is it anticipated that any significant change in results of operations from the corresponding period for the last fiscal year will be reflected by the earnings statements to be included in the subject report or portion thereof?
		☐ Yes ☒ No
		If so: attach an explanation of the anticipated change, both narratively and quantitatively, and, if appropriate, state the reasons why a reasonable estimate of the results cannot be made.

2

FLEXIBLE SOLUTIONS INTERNATIONAL, INC.

(Name of Registrant as specified in charter)

has caused this notification to be signed on its behalf by the undersigned thereunto duly authorized.

Date: March 31, 2026	By:	/s/ Daniel O’Brien
		Daniel O’Brien,
		Chief Executive Officer

ATTENTION

Intentional misstatements or omissions of fact constitute Federal Criminal Violations (See 18 U.S.C. 1001).

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FAQ

Why did Flexible Solutions (FSI) file a Form 12b-25?

The company cites delays in providing required documentation to its auditors. The filing states auditors lacked sufficient time to complete audit procedures, and the company is supplying outstanding schedules to enable completion.

When is Flexible Solutions (FSI) expected to file the delayed 10-K?

Flexible Solutions expects to file within the Rule 12b-25 extension period. The notice references the extension mechanism under Rule 12b-25 permitting a short additional filing window for delayed reports.

Does the Form 12b-25 indicate changes to Flexible Solutions' results of operations?

No. The notice answers "No" to whether a significant change in operating results is anticipated for the subject period, and it does not provide any quantitative earnings revisions.

Who signed the Form 12b-25 for Flexible Solutions (FSI)?

The notification was signed by Daniel O’Brien, Chief Executive Officer, on March 31, 2026. The filing includes the company's principal executive office address in Taber, Alberta.

What does Rule 12b-25 mean for FSI shareholders?

Rule 12b-25 permits a short extension to file a delayed periodic report. It signals a procedural delay while auditors complete procedures; the company must file within the specified extension to restore current reporting status.