Cambium Networks (CMBM) CAO reports tax-withholding disposal of shares

Rhea-AI Filing Summary

Cambium Networks Corp insider Melissa Elizabeth Cada-Bartoli, Global Controller and Chief Accounting Officer, reported a small disposition of 59 Ordinary Shares on February 27, 2026. The transaction was a tax-withholding disposition, and she held 6,390 Ordinary Shares directly after this event.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Cada-Bartoli Melissa Elizabeth

(Last) (First) (Middle)

C/O CAMBIUM NETWORKS, INC.

2000 CENTER DRIVE, SUITE EAST A401

(Street)

HOFFMAN ESTATES IL 60192

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Cambium Networks Corp [ CMBM ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Global Controller and CAO

3. Date of Earliest Transaction (Month/Day/Year)
02/27/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Ordinary Shares	02/27/2026		F		59	D	$1.12	6,390	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

	/s/ Sally Rau, attorney-in-fact	03/03/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transaction did Cambium Networks (CMBM) report for Melissa Cada-Bartoli?

Cambium Networks reported that Melissa Elizabeth Cada-Bartoli, Global Controller and CAO, had a tax-withholding disposition of 59 Ordinary Shares. This Form 4 event reflects shares withheld to cover tax obligations rather than an open-market purchase or sale.

How many Cambium Networks (CMBM) shares were involved in the latest Form 4 filing?

The Form 4 shows that 59 Ordinary Shares were disposed of in a tax-withholding transaction. This is a relatively small movement and represents shares used to satisfy tax liability tied to equity compensation.

At what price were the Cambium Networks (CMBM) shares valued in this Form 4?

The 59 Ordinary Shares were valued at $1.12 per share for the tax-withholding disposition. This value is used for reporting purposes on the Form 4 and reflects the price applied to the withheld shares.

How many Cambium Networks (CMBM) shares does Melissa Cada-Bartoli hold after the transaction?

After the reported tax-withholding disposition, Melissa Elizabeth Cada-Bartoli directly holds 6,390 Ordinary Shares of Cambium Networks. This figure reflects her direct beneficial ownership immediately following the February 27, 2026 transaction.

Was the Cambium Networks (CMBM) Form 4 transaction an open-market sale or purchase?

No, the Form 4 transaction was not an open-market trade. It is coded “F,” meaning a tax-withholding disposition, where shares are surrendered to cover taxes associated with equity awards rather than sold on the open market.