RBBN Rule 144 Filing Shows Insider Sales totaling 175,434 Shares

Rhea-AI Filing Summary

Form 144 notice for Ribbon Communications, Inc. (RBBN) shows an insider intends to sell 14,176 common shares through Morgan Stanley Smith Barney on or about 09/08/2025, with an aggregate market value of $56,987.52. The shares were acquired as performance shares on 04/17/2024 and fully paid on that date. The filing lists two recent sales by the same person: 155,434 shares sold on 09/05/2025 for $626,352.38 and 20,000 shares sold on 09/04/2025 for $83,252.00. The filing includes a statutory representation that the filer knows of no undisclosed material adverse information.

Positive

• Filing compliance: Notice submitted under Rule 144, disclosing planned and recent sales.
• Source of shares disclosed: 14,176 shares were acquired as performance shares on 04/17/2024.
• Attestation included: Filer represents no undisclosed material adverse information, supporting transparency.

Negative

• Insider sales reported: Recent sales of 155,434 and 20,000 shares on 09/05/2025 and 09/04/2025, respectively, totaling 175,434 shares sold for $709,604.38.
• Sale activity concentration: While small relative to total shares outstanding, the near-term clustered disposals may attract investor attention.

Insights

Securities Analyst

TL;DR: Insider sale filings show routine disposition of earned performance shares; recent larger sales may be notable but represent small percentages of outstanding stock.

The filer plans to sell 14,176 shares valued at $56,987.52, acquired as performance shares on 04/17/2024. Recent reported sales total 175,434 shares across 09/04–09/05/2025 for $709,604.38. Relative to the reported 177,081,847 shares outstanding, the planned sale (0.008%) and the recent combined sales (0.099%) are small on an absolute basis. The filing is procedural under Rule 144 and provides no new operational or financial data about the issuer.

Corporate Governance Expert

TL;DR: Filing documents compliance with Rule 144 and discloses insider liquidity events; no indication of undisclosed material information.

The record shows the securities were granted as performance-based compensation and the filer has disclosed recent dispositions. The notice includes the required attestation that no undisclosed material adverse information is known to the filer. This is a standard governance disclosure that supports market transparency but does not by itself signal governance concerns.

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	14176	56987.52	177081847	09/08/2025	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	04/17/2024	Performance Shares	Issuer			14176	04/17/2024	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	09/05/2025	155434	626352.38
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 the Form 144 for Ribbon Communications (RBBN) disclose?

The form discloses a proposed sale of 14,176 common shares (aggregate market value $56,987.52) scheduled around 09/08/2025 and prior sales of 155,434 and 20,000 shares on 09/05/2025 and 09/04/2025.

How were the 14,176 shares acquired?

They were acquired as performance shares from the issuer on 04/17/2024 and paid in full on that date.

Who is the broker handling the proposed sale?

The broker named is Morgan Stanley Smith Barney LLC, Executive Financial Services, 1 New York Plaza, 8th Floor, New York, NY.

What percentage of the company's outstanding shares do these sales represent?

Using the filing's 177,081,847 shares outstanding, the planned sale of 14,176 shares is ~0.008% and the recent combined sales of 175,434 shares are ~0.099% of outstanding shares.

Does the filing indicate any undisclosed material information about Ribbon Communications?

No. The filer signs a representation stating they do not know any material adverse information about the issuer that has not been publicly disclosed.