Ribbon director awarded 63,197 RSUs vesting 2027

SILVER LOUIS reported acquisition or exercise transactions in this Form 4 filing.

Accepted by SEC EDGAR 06/17/2026 - 04:43 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

SILVER LOUIS reported acquisition or exercise transactions in this Form 4 filing.

Ribbon Communications Inc. director Louis Silver received a grant of 63,197 Restricted Stock Units (RSUs) tied to the company’s common stock. Each RSU represents a right to receive one share when it vests. The award will vest on June 15, 2027, if he continues serving the company.

If Ribbon’s 2027 annual stockholders’ meeting occurs before June 15, 2027 and Silver either does not stand for re-election or is not re-elected, the RSUs will instead vest on the date of that meeting. Following this grant, he holds 63,197 RSUs directly.

Insider Trade Summary

Grant/Award: 63,197 shares

Grant/Award 1 txn

Insider SILVER LOUIS

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Units (RSUs)	63,197	$0.00	$0.00

Holdings After Transaction: Restricted Stock Units (RSUs) — 63,197 units (Direct)

Holdings Before and After: Restricted Stock Units (RSUs), 0 to 63,197 units (Direct)

Footnotes (2)

1. F1. Each RSU represents a contingent right to receive one share of the Issuer's common stock.
2. F2. The RSUs will vest on June 15, 2027, subject to the Reporting Person's continued service with the Issuer through such date; provided, however, that if the Issuer's 2027 Annual Meeting of Stockholders (the "2027 Annual Meeting") occurs prior to June 15, 2027, and, at such 2027 Annual Meeting, the Reporting Person either chooses not to stand for re-election to the Issuer's Board of Directors or, after standing for re-election, is not re-elected, then these RSUs will vest as of the date of the 2027 Annual Meeting.

Key Figures

RSUs granted: 63,197 units Transaction price per RSU: $0.00 RSUs after transaction: 63,197 units +1 more

4 metrics

RSUs granted 63,197 units Restricted Stock Units awarded to director Louis Silver

Transaction price per RSU $0.00 Equity compensation grant, not a cash purchase

RSUs after transaction 63,197 units Total RSUs held directly following the grant

Scheduled vesting date June 15, 2027 Primary vesting date subject to continued service

Key Terms

Restricted Stock Units (RSUs), contingent right, vest, Annual Meeting of Stockholders

4 terms

Restricted Stock Units (RSUs) financial

"security_title: "Restricted Stock Units (RSUs)""

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.

contingent right financial

"Each RSU represents a contingent right to receive one share"

vest financial

"The RSUs will vest on June 15, 2027, subject to continued service"

A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.

Annual Meeting of Stockholders financial

"if the Issuer's 2027 Annual Meeting of Stockholders occurs prior to June 15, 2027"

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

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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^*

SILVER LOUIS

(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)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/15/2026

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

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)	06/15/2026		A		63,197		(2)	(2)	Common Stock	63,197	$0	63,197	D

Explanation of Responses:

1. Each RSU represents a contingent right to receive one share of the Issuer's common stock.

2. The RSUs will vest on June 15, 2027, subject to the Reporting Person's continued service with the Issuer through such date; provided, however, that if the Issuer's 2027 Annual Meeting of Stockholders (the "2027 Annual Meeting") occurs prior to June 15, 2027, and, at such 2027 Annual Meeting, the Reporting Person either chooses not to stand for re-election to the Issuer's Board of Directors or, after standing for re-election, is not re-elected, then these RSUs will vest as of the date of the 2027 Annual Meeting.

	Patrick Macken, By POA from Louis Silver	06/17/2026
	** 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)