RBBN Insider Notice: 155K Shares Valued at $626K Proposed for Sale

Rhea-AI Filing Summary

Ribbon Communications Inc. (RBBN) filed a Form 144 notice reporting a proposed sale of 155,434 common shares held with Morgan Stanley Smith Barney LLC, with an aggregate market value of $626,352.39. The filing shows 177,081,847 shares outstanding and an approximate sale date of 09/05/2025 on NASDAQ. The securities were acquired as restricted stock in several tranches between 12/15/2023 and 06/15/2025. The filer also disclosed a recent sale of 20,000 shares on 09/04/2025 for gross proceeds of $83,252.00. The notice includes the standard representation that the seller has no undisclosed material information.

Insights

Securities Analyst

TL;DR: Routine Rule 144 sale; size appears immaterial to cap base.

The filing documents a proposed sale under Rule 144 of 155,434 shares valued at $626k against a 177.08 million share base, representing roughly 0.09% of outstanding shares. The shares were received as restricted stock in multiple grant dates between 2023 and 2025, indicating insider compensation being monetized when eligible. The prior reported sale of 20,000 shares and this planned sale are consistent with vesting and Rule 144 liquidity events rather than corporate transactions. Impact on share supply and market liquidity is likely minimal given the small percentage of float represented.

Corporate Governance Expert

TL;DR: Disclosure aligns with compliance expectations; no governance red flags.

The Form 144 provides required disclosure of broker, share counts, acquisition dates, and the seller's certification of no undisclosed material information. Multiple restricted stock grant dates suggest standard equity compensation practices. There is no indication of unusual trading plans or concentrated insider selling beyond routine disposition. From a governance perspective, the filing demonstrates adherence to Rule 144 procedures and public transparency.

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

Relationship to Issuer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	155434	626352.39	177081847	09/05/2025	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	06/15/2024	Restricted Stock	Issuer			13052	06/15/2024	Not Applicable
Common	12/15/2024	Restricted Stock	Issuer			12636	12/15/2024	Not Applicable
Common	06/15/2025	Restricted Stock	Issuer			12636	06/15/2025	Not Applicable
Common	04/17/2025	Restricted Stock	Issuer			10961	04/17/2025	Not Applicable
Common	10/17/2024	Restricted Stock	Issuer			10961	10/17/2024	Not Applicable
Common	12/15/2023	Restricted Stock	Issuer			46839	12/15/2023	Not Applicable
Common	04/17/2024	Restricted Stock	Issuer			22758	04/17/2024	Not Applicable
Common	05/16/2025	Restricted Stock	Issuer			25591	05/16/2025	Not Applicable

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
DANIEL REDINGTON 6500 Chase Oaks Blvd., Suite 100, Plano TX 75023	Common	09/04/2025	20000	83252.00

144: Remarks and Signature

Remarks

Date of Notice

ATTENTION:

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.

Signature

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What does Ribbon Communications' Form 144 (RBBN) disclose about the proposed sale?

The filing discloses a proposed sale of 155,434 common shares valued at $626,352.39, with an approximate sale date of 09/05/2025 on NASDAQ.

How many shares outstanding does the Form 144 report for RBBN?

The Form 144 lists 177,081,847 shares outstanding.

When were the shares being sold originally acquired according to the filing?

The shares were acquired as restricted stock on multiple dates between 12/15/2023 and 06/15/2025.

Does the filing show any recent sales prior to the proposed sale?

Yes. The filing reports a sale of 20,000 shares on 09/04/2025 for gross proceeds of $83,252.00.

Who is the broker handling the proposed sale in the Form 144?

The broker named in the filing is Morgan Stanley Smith Barney LLC (Executive Financial Services, 1 New York Plaza, 8th Floor, New York, NY 10004).