Ribbon CFO exercises RSUs, covers tax with shares

Ribbon Communications EVP and CFO John Raymond Townsend exercised Restricted Stock Units into 25,641 shares of Common Stock on April 15, 2026.

Rhea-AI Filing Summary

Ribbon Communications EVP and CFO John Raymond Townsend exercised Restricted Stock Units into 25,641 shares of Common Stock on April 15, 2026. The company withheld 10,089 shares at $2.48 per share to cover tax obligations related to the vesting.

After these transactions, Townsend directly holds 93,309 shares of Common Stock. The RSUs were granted on October 15, 2024 and convert to Common Stock on a one-for-one basis. The remaining RSUs vest in three equal semi-annual installments through October 15, 2027, indicating additional potential share delivery over time as they vest.

Insider Trade Summary

25,641 shares exercised/converted

Exercise 3 txns

Insider Townsend John Raymond

Role EVP, Chief Financial Officer

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units (RSUs)	25,641	$0.00	$0.00
Exercise	Common Stock	25,641	$0.00	$0.00
Exercise Price or Tax Liability	Common Stock	10,089	$2.48	$25K

Holdings After Transaction: Restricted Stock Units (RSUs) — 76,923 contracts (Direct); Common Stock — 93,309 shares (Direct)

Footnotes (3)

1. F1. These RSUs convert to Common Stock on a one-for-one basis.
2. F2. Reflects shares of Common Stock withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting.
3. F3. The RSUs were granted on October 15, 2024; the remaining RSUs vest in three equal semi-annual installments through October 15, 2027.

Key Figures

RSUs exercised: 25,641 shares Shares withheld for taxes: 10,089 shares at $2.48 Shares held after transactions: 93,309 shares +2 more

5 metrics

RSUs exercised 25,641 shares RSUs converting to Common Stock on April 15, 2026

Shares withheld for taxes 10,089 shares at $2.48 Common Stock withheld to satisfy tax obligations on vesting

Shares held after transactions 93,309 shares CFO’s direct Common Stock holdings following Form 4 transactions

RSU grant date October 15, 2024 Grant date for RSUs that convert one-for-one into Common Stock

Remaining RSU vesting schedule Three equal semi-annual installments Remaining RSUs vest through October 15, 2027

Key Terms

Restricted Stock Units (RSUs), tax withholding obligations, vest in three equal semi-annual installments, derivative exercise/conversion

4 terms

Restricted Stock Units (RSUs) financial

"These RSUs convert to Common Stock on a one-for-one basis."

Restricted stock units (RSUs) are a type of company promise to give employees shares of stock in the future, usually after certain conditions like working for a set time. They are like a gift promised today that you receive later, which can become valuable if the company's stock price goes up. RSUs matter because they are a way companies reward employees and can be a significant part of compensation.

tax withholding obligations financial

"Reflects shares of Common Stock withheld by the Issuer to satisfy tax withholding obligations"

vest in three equal semi-annual installments financial

"The RSUs were granted on October 15, 2024; the remaining RSUs vest in three equal semi-annual installments"

derivative exercise/conversion financial

"transaction_action: derivative exercise/conversion with code M for RSUs"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transactions did Ribbon Communications (RBBN) CFO report?

Ribbon Communications CFO John Raymond Townsend exercised RSUs into 25,641 Common shares and had 10,089 shares withheld for taxes. Following these compensation-related transactions, he directly holds 93,309 shares of Ribbon Communications Common Stock.

How many Ribbon Communications (RBBN) shares does the CFO hold after this Form 4?

After the reported Form 4 transactions, CFO John Raymond Townsend directly holds 93,309 shares of Ribbon Communications Common Stock. This reflects RSU vesting into 25,641 shares and 10,089 shares withheld by the issuer to satisfy tax obligations related to the vesting.

Were Ribbon Communications (RBBN) shares sold on the open market in this Form 4?

The Form 4 shows no open-market sales. Instead, 10,089 shares of Ribbon Communications Common Stock were withheld by the issuer at $2.48 per share to satisfy tax withholding obligations arising from RSU vesting, which is a non-market, compensation-related disposition.

What are the terms of the CFO’s RSUs at Ribbon Communications (RBBN)?

The CFO’s RSUs were granted on October 15, 2024 and convert to Ribbon Communications Common Stock on a one-for-one basis. The remaining RSUs vest in three equal semi-annual installments through October 15, 2027, providing a defined future vesting schedule.

What was the purpose of the 10,089 Ribbon Communications shares disposition?

The 10,089-share disposition was for tax withholding. Ribbon Communications withheld these shares of Common Stock at $2.48 per share to satisfy tax obligations arising from the RSU vesting, rather than an open-market sale initiated by the CFO.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Form 4 Insider Transactions: What Each Field Means →

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Accepted by SEC EDGAR 04/17/2026 - 08:40 AM Learn about SEC filing dates

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^*

Townsend John Raymond

(Last) (First) (Middle)

6500 CHASE OAKS BLVD.

SUITE 100

(Street)

PLANO TEXAS 75023

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Ribbon Communications Inc. [ RBBN ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP, Chief Financial Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/15/2026

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
Common Stock	04/15/2026		M		25,641	A	(1)	103,398	D
Common Stock	04/15/2026		F		10,089	D	$2.48(2)	93,309	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
Restricted Stock Units (RSUs)	(1)	04/15/2026		M			25,641	(3)	(3)	Common Stock	25,641	$0	76,923	D

Explanation of Responses:

1. These RSUs convert to Common Stock on a one-for-one basis.

2. Reflects shares of Common Stock withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting.

3. The RSUs were granted on October 15, 2024; the remaining RSUs vest in three equal semi-annual installments through October 15, 2027.

	Patrick Macken, By POA from John Townsend	04/17/2026
	** 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)