Cambium Networks (CMBM) CAO has shares withheld for taxes

Rhea-AI Filing Summary

Cambium Networks Corp reported a small insider transaction by Global Controller and CAO Melissa Elizabeth Cada-Bartoli. On June 1, 2026, 59 Ordinary Shares were disposed of at $0.30 per share as a tax-withholding disposition, meaning shares were withheld to cover tax obligations rather than sold on the open market. After this transaction, she directly holds 6,331 Ordinary Shares.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Cada-Bartoli Melissa Elizabeth

Role Global Controller and CAO

Type	Security	Shares	Price	Value
Tax Withholding	Ordinary Shares	59	$0.30	$17.70

Holdings After Transaction: Ordinary Shares — 6,331 shares (Direct, null)

Footnotes (1)

Key Figures

Tax-withheld shares: 59 shares Per-share value for tax withholding: $0.30 per share Shares held after transaction: 6,331 shares +1 more

4 metrics

Tax-withheld shares 59 shares Ordinary Shares used for tax-withholding disposition

Per-share value for tax withholding $0.30 per share Value applied to 59 shares in tax-withholding

Shares held after transaction 6,331 shares Direct Ordinary Shares held post-transaction

Transaction date June 1, 2026 Date of tax-withholding disposition

Key Terms

tax-withholding disposition, Ordinary Shares, Form 4

3 terms

tax-withholding disposition financial

"were disposed of at $0.30 per share as a tax-withholding disposition"

A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.

Ordinary Shares financial

"On June 1, 2026, 59 Ordinary Shares were disposed of"

Ordinary shares are a type of ownership stake in a company, giving shareholders a right to participate in the company’s profits and decision-making through voting. They are similar to owning a piece of a business, and their value can rise or fall based on the company's performance. Investors buy ordinary shares to potentially earn dividends and benefit from the company's growth over time.

Form 4 regulatory

"This post-transaction balance reflects her remaining equity position reported in the Form 4"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

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Form 4 Insider Transactions: What Each Field Means →

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

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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 ILLINOIS 60192

(City) (State) (Zip)

UNITED STATES

(Country)

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/01/2026

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

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

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

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	06/01/2026		F		59	D	$0.3	6,331	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	06/03/2026
	** 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.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did Cambium Networks (CMBM) disclose in this Form 4?

Cambium Networks disclosed that Global Controller and CAO Melissa Elizabeth Cada-Bartoli had 59 Ordinary Shares withheld at $0.30 per share to satisfy tax obligations, a routine tax-withholding disposition rather than an open-market sale.

How many Cambium Networks (CMBM) shares were involved in the tax-withholding disposition?

The filing shows 59 Ordinary Shares were disposed of in a tax-withholding transaction at $0.30 per share. This is a very small number of shares and represents a routine mechanism to cover tax liabilities on equity compensation.

At what price were the Cambium Networks (CMBM) shares valued for the tax withholding?

The 59 Ordinary Shares used for tax withholding were valued at $0.30 per share. This value is used solely for tax-settlement purposes in the transaction and does not necessarily reflect broader market trading activity or a discretionary sale decision.

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

Following the tax-withholding disposition, Melissa Elizabeth Cada-Bartoli directly holds 6,331 Ordinary Shares of Cambium Networks. This post-transaction balance reflects her remaining equity position reported in the Form 4 after 59 shares were used to settle tax obligations.

Does this Cambium Networks (CMBM) Form 4 indicate an open-market sale by the insider?

No, the transaction is classified as a tax-withholding disposition, not an open-market sale. Shares were delivered to cover tax liabilities related to equity compensation, so it does not represent a discretionary decision to sell shares in the market.