[NT 10-Q] Cambium Networks Corp SEC Filing

Rhea-AI Filing Summary

Cambium Networks Corporation notified the SEC that it could not file its Quarterly Report on Form 10-Q for the period ended March 31, 2026 by the prescribed due date and expects to file within the five-day extension provided by Rule 12b-25.

The company says it prioritized completing recent annual and quarterly filings and now is allocating resources to finish the March 31, 2026 Form 10-Q. The filing estimates total revenues of approximately $44.5 million for the quarter, versus $33.7 million for the same period in 2025.

Insights

Compliance Counsel

Routine late-filing notice citing resource prioritization; expects five-day cure.

The notification states the company completed multiple prior filings including a Form 10-K and several Form 10-Qs before turning resources to the March 31, 2026 quarter. It invokes Rule 12b-25 and seeks the five-calendar-day extension.

Key dependencies are completion of internal close and review processes; timing is explicit — the company expects to file within five days. Subsequent periodic filings will confirm whether the extension sufficed.

Key Figures

Estimated Q1 2026 Revenue: $44.5 million Q1 2025 Revenue: $33.7 million Signature Date: May 15, 2026 +1 more

4 metrics

Estimated Q1 2026 Revenue $44.5 million three months ended March 31, 2026

Q1 2025 Revenue $33.7 million three months ended March 31, 2025

Signature Date May 15, 2026 Form 12b-25 signature date

Cure Window five calendar days Rule 12b-25 extension period

Key Terms

Rule 12b-25, Form 10-Q, Forward-Looking Statements

3 terms

Rule 12b-25 regulatory

"expects to file this quarterly report on Form 10-Q for the quarter ended March 31, 2026, within the five day extension granted 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-Q regulatory

"unable to file, without unreasonable effort or expense, its Quarterly Report on Form 10-Q for the period ended March 31, 2026"

A Form 10-Q is a detailed report that publicly traded companies are required to file with regulators three times a year, providing an update on their financial health and business activities. It is important for investors because it offers timely insights into a company's performance, helping them make informed decisions about buying or selling stocks. Think of it as a regular check-up report that shows how well a company is doing.

Forward-Looking Statements financial

"Certain matters discussed constitute forward-looking statements within the meaning of the federal securities laws"

Forward-looking statements are predictions or plans that companies share about what they expect to happen in the future, like estimating sales or profits. They matter because they help investors understand a company's outlook, but since they are based on guesses and assumptions, they can sometimes be wrong.

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-SAR ☐  Form N-CSR
		For Period Ended: March 31, 2026
		☐  Transition Report on Form 10-K
		☐  Transition Report on Form 20-F
		☐  Transition Report on Form 11-K
		☐  Transition Report on Form 10-Q
		☐  Transition Report on Form N-SAR
		For the Transition Period Ended:

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

CAMBIUM NETWORKS CORPORATION

(Full Name of Registrant)

N/A

(Former Name if Applicable)

c/o Cambium Networks, Inc.

2000 Center Drive, Suite East A401

(Address of Principal Executive Office (Street and Number))

Hoffman Estates, Illinois 60092

(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-SAR 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-SAR, N-CSR, or the transition report or portion thereof, could not be filed within the prescribed time period.

Cambium Networks Corporation (the “Company”) has determined that it is unable to file, without unreasonable effort or expense, its Quarterly Report on Form 10-Q for the period ended March 31, 2026 by the prescribed filing due date. The Company has, on April 7, 2026, filed its comprehensive annual report on Form 10-K for the period ended December 31, 2024, including restated financial statements for the year ended December 31, 2023 and for the quarters ended March 31, 2023 and 2024, June 30, 2023 and 2024 and September 30, 2023 and 24. On April 30, 2026, the Company filed its quarterly reports on Form 10-Q for the quarters ended March 31, June 30 and September 30, 2025, and on May 1, 2026, it filed its annual report on Form 10-K for the year ended December 31, 2025. Immediately following completion of these filings, the Company focused its resources on completing the quarterly report on Form 10-Q for the quarter ended March 31, 2026, but is unable to complete and file this report by May 15, 2026. The Company expects to file this quarterly report on Form 10-Q for the quarter ended March 31, 2026, within the five day extension granted by Rule 12b-25 of the Securities Exchange Act of 1934, as amended.

Forward-Looking Statements

Certain matters discussed constitute forward-looking statements within the meaning of the federal securities laws. All statements contained in this notification that do not relate to matters of historical fact, including statements regarding anticipated results for the period ended March 31, 2026, the Company's expectation of filing its quarterly report on Form 10-Q within the five day extension, and statements that address activities, events or developments that the Company “anticipates,” “believes,” “estimates,” “expects,” “intends,” “plans,” “projects,” and similar expressions, are forward -looking statements. The Company’s actual results could differ materially from the results contemplated by these forward-looking statements and are subject to a number of risks, uncertainties, estimates and assumptions that may cause actual results to differ materially from current expectations. These forward-looking statements are based on management's current expectations.

These statements are neither promises nor guarantees, but involve known and unknown risks, uncertainties and other important factors that may cause the Company's actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by the forward-looking statements. Important factors that could cause actual results to differ materially from expectations include, but are not limited to the risks and uncertainties included in the reports on Forms 10-K, 10-Q and 8-K and in other filings the Company makes with the Securities and Exchange Commission from time to time, available at www.sec.gov. The Company undertakes no obligation to update publicly any forward-looking statements, whether as a result of future events, new information or otherwise, except as required by law.

PART IV — OTHER INFORMATION

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

Sally Rau		(888)		863-5250
(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

The Company estimates total revenues of approximately $44.5 million for the three months ended March 31, 2026, as compared to total revenues of approximately $33.7 million for the corresponding period of 2025.

CAMBIUM NETWORKS CORPORATION

(Name of Registrant as Specified in Charter)

Has caused this notification to be signed on its behalf by the undersigned hereunto duly authorized.

Date:		May 15, 2026		By:		/s/ Sally Rau
				Name:		Sally Rau
				Title:		Chief Legal Officer

INSTRUCTION: The form may be signed by an executive officer of the registrant or by any other duly authorized representative. The name and title of the person signing the form shall be typed or printed beneath the signature. If the statement is signed on behalf of the registrant by an authorized representative (other than an executive officer), evidence of the representative’s authority to sign on behalf of the registrant shall be filed with the form.

FAQ

What did Cambium Networks (CMBM) file with the SEC on May 15, 2026?

Cambium filed a Form 12b-25 notifying the SEC it could not timely file its Form 10-Q for the period ended March 31, 2026 and expects to file within the five-day extension provided by Rule 12b-25.

Does the company estimate its revenue for Q1 2026 in the notification?

Yes. The company estimates total revenues of approximately $44.5 million for the three months ended March 31, 2026, compared with approximately $33.7 million for the same period in 2025, as stated in the notification.

Why could Cambium not file the March 31, 2026 Form 10-Q on time?

The company states it prioritized completing its annual Form 10-K and several other quarterly reports, then focused resources on the March 31, 2026 Form 10-Q but could not complete it by the prescribed due date.

What deadline relief is Cambium relying on for the late 10-Q?

Cambium is relying on Rule 12b-25, which permits a short extension; the company states it expects to file the Form 10-Q within the five-calendar-day extension specified by that rule.

Who signed the Form 12b-25 for Cambium Networks?

The notification is signed by Sally Rau, Chief Legal Officer, on behalf of Cambium Networks Corporation, with the signature date shown as May 15, 2026.