Protokinetix (PKTX) submits Form 12b-25, 10-K delayed 15 days

Rhea-AI Filing Summary

Protokinetix, Inc. submitted a Form 12b-25 notifying the SEC it could not timely file its Annual Report on Form 10-K for the fiscal year ended December 31, 2025 due to delays finalizing financial statements and MD&A. The registrant states it expects to file the Annual Report no later than the fifteenth calendar day following the prescribed due date for smaller reporting companies (original filing date March 31, 2026). The notification was executed by Michael Guzzetta on March 31, 2026.

Key Figures

Fiscal period end: December 31, 2025 Original filing date (SRC): March 31, 2026 Anticipated extension: 15 calendar days +1 more

4 metrics

Fiscal period end December 31, 2025 Form 10-K period end

Original filing date (SRC) March 31, 2026 smaller reporting company prescribed due date

Anticipated extension 15 calendar days will file no later than the fifteenth calendar day following prescribed due date

Notice signed March 31, 2026 signature date by CEO Michael Guzzetta

Key Terms

Rule 12b-25, Annual Report on Form 10-K, smaller reporting companies

3 terms

Rule 12b-25 regulatory

"could not be filed without unreasonable effort or expense"

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.

Annual Report on Form 10-K regulatory

"unable, without unreasonable effort or expense, to file its Annual Report on Form 10-K"

An annual report on Form 10‑K is a required, comprehensive filing that publicly traded companies give to regulators and investors summarizing their business, results of operations, detailed financial statements reviewed by independent auditors, material risks, legal issues and management’s discussion of performance. Investors use it like a company’s year‑end report card and medical checkup: it reveals how the business made money, where it is vulnerable, and the facts needed to compare value, judge risk and make informed investment decisions.

smaller reporting companies regulatory

"original filing date applicable to smaller reporting companies was March 31, 2026"

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

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-CEN ☐ Form N-CSR
		For Period Ended: December 31, 2025
		☐ Transition Report on Form 10-K
		☐ Transition Report on Form 20-F
		☐ Transition Report on Form 11-K
		☐ Transition Report on Form 10-Q
		For the Transition Period Ended:

Read Instruction (on back page) Before Preparing Form. Please Print or Type.

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

If the notification relates to a portion of the filing checked above, identify the Item(s) to which the notification relates:

PART I - REGISTRANT INFORMATION

Protokinetix, Inc.

Full Name of Registrant

N/A

Former Name if Applicable

109 W. Main St.

Address of Principal Executive Office (Street and Number)

Dalton, OH 44618

City, State and Zip Code

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 reason 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, transition report on Form 10-K, Form 20-F, Form 11-K, Form N-CEN or Form N-CSR, 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 10-Q or subject distribution report on Form 10-D, 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 why Forms 10-K, 20-F, 11-K, 10-Q, 10-D, N-CEN, N-CSR, or the transition report or portion thereof, could not be filed within the prescribed time period.

Protokinetix, Inc. (the “Registrant”) was unable, without unreasonable effort or expense, to file its Annual Report on Form 10-K for the fiscal year ended December 31, 2025 (the “Annual Report”) within the prescribed time because of delays in completing the preparation of its financial statements and its management discussion and analysis. The original filing date applicable to smaller reporting companies was March 31, 2026. The Registrant is still in the process of compiling required information to complete the Annual Report and its independent registered public accounting firm requires additional time to complete its review of the financial statements for the year ended December 31, 2025, to be incorporated in the Annual Report. The Registrant anticipates that it will file the Annual Report no later than the fifteenth calendar day following the prescribed filing date.

PART IV - OTHER INFORMATION

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

Michael Guzzetta		330		445-4971
(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 or Section 30 of the Investment Company Act of 1940 during the preceding 12 months or for such shorter period that the registrant was required to file such report(s) 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.

Protokinetix, Inc.

(Name of Registrant as Specified in Charter)

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Date: March 31, 2026	By:	/s/ Michael Guzzetta
		Michael Guzzetta
		Chief Executive Officer

FAQ

Why did Protokinetix (PKTX) file Form 12b-25?

Protokinetix filed Form 12b-25 because it could not complete its Form 10-K due to delays in preparing financial statements and MD&A, and the auditor requires additional time to complete its review.

When will PKTX file its 2025 Form 10-K?

The company expects to file the Form 10-K for the year ended December 31, 2025 no later than the fifteenth calendar day following the prescribed due date, tied to the original smaller reporting company deadline of March 31, 2026.

Who signed the 12b-25 notice for PKTX and when?

Michael Guzzetta, Chief Executive Officer, signed the Form 12b-25 on March 31, 2026, certifying the company could not file the Annual Report without unreasonable effort or expense.

Does the 12b-25 state material changes in results of operations for PKTX?

The notice includes the question about significant changes but does not attach an anticipated change. The form does not state any specific anticipated quantitative change in results of operations.