[Form 4] Ribbon Communications Inc. Insider Trading Activity

Rhea-AI Filing Summary

Ribbon Communications Inc. (RBBN) – Form 4 insider activity

Director Bruns H. Grayson filed a Form 4 on 18-Jun-2025 reporting two equity transactions:

• RSU grant: 42,500 restricted stock units awarded on 16-Jun-2025 (Code A). The units vest on 16-Jun-2026, or earlier at the 2026 annual meeting if the director does not stand for, or is not re-elected to, the board.
• RSU conversion: 48,365 RSUs granted on 17-Jun-2024 fully vested on 17-Jun-2025 and were converted into an equal number of common shares (Code M). No cash consideration was paid.

Following the conversion, the director’s direct beneficial ownership rose to 738,413 common shares. No shares were sold and no open-market purchases occurred; all movements stem from equity compensation. The RSU grant represents potential future dilution of 42,500 shares once vested.

Positive

• Director increased direct share ownership by 48,365 shares, enhancing alignment with shareholder interests and signalling continued board commitment.

Negative

• New grant of 42,500 RSUs adds incremental dilution risk once the units vest in 2026 or earlier.

Insights

Securities Analyst

TL;DR: Routine RSU vesting & grant; insider stake up to 738k shares, no cash purchases or sales – negligible market impact.

The filing shows standard board compensation mechanics rather than an opportunistic buy or sell. Conversion of 48,365 vested RSUs increased the director’s share count without affecting cash flow, while a new 42,500-unit grant maintains ongoing equity alignment but also adds modest future dilution. The director now controls roughly three-quarters of a million shares, signalling continued commitment but not necessarily a fresh bullish signal. Because no open-market activity occurred and the share count change is small relative to RBBN’s 171 million shares outstanding (latest 10-Q), the disclosure is informational and unlikely to move the stock.

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
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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^*

GRAYSON BRUNS H

(Last) (First) (Middle)

C/O RIBBON COMMUNICATIONS

6500 CHASE OAKS BLVD.

(Street)

PLANO TX 75023

(City) (State) (Zip)

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)

3. Date of Earliest Transaction (Month/Day/Year)
06/16/2025

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
Common Stock	06/17/2025		M		48,365	A	(1)	738,413	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)	06/16/2025		A		42,500		(2)	(2)	Common Stock	42,500	$0	42,500	D
RSUs	(1)	06/17/2025		M			48,365	(3)	(3)	Common Stock	48,365	$0	0	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 16, 2026, subject to the Reporting Person's continued service with the Issuer through such date; provided, however, that if the Issuer's 2026 Annual Meeting of Stockholders (the "2026 Annual Meeting") occurs prior to June 16, 2026, and, at such 2026 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 2026 Annual Meeting.

3. The RSUs were awarded on June 17, 2024 and vested in full on June 17, 2025.

	Patrick Macken, By POA from Bruns Grayson	06/18/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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FAQ

How many Ribbon Communications (RBBN) shares did the director acquire?

Bruns H. Grayson received 48,365 common shares upon RSU vesting on 17-Jun-2025.

What new equity award was granted in the Form 4?

The director was granted 42,500 restricted stock units on 16-Jun-2025.

When will the 42,500 RSUs vest?

They vest on 16-Jun-2026, or earlier at the 2026 annual meeting if the director does not continue on the board.

What is the director’s total share ownership after the transactions?

He now holds 738,413 RBBN common shares directly.

Did the Form 4 report any share sales or purchases for cash?

No. All reported changes were equity-compensation related; there were no open-market trades.