Alpha Registry
Claim a profile

Profile

Identity, professional record and current appointments.

Overview

Professional record at a glance

A concise summary of information supported by the cited public sources. Missing information is treated as unknown, not as a negative finding.

Current roles
11 current organization shown on this profile
Board positions
11 supported by public sources, 0 supplied by the profile owner
Committee roles
Not establishedNo committee role is currently confirmed by the cited sources
Qualifications
Not establishedNo qualification is currently confirmed by the cited sources

Professional narrative

About

Alpha has not published a narrative summary because the current public source set is not sufficient.

Sources are shown with the information they support.

Current roles

Appointments & responsibilities

Board appointments

Governance

Board appointments, committee responsibilities and disclosed relationships.

Board and advisory record

Board service

Sources are shown with each role, education record, or credential.

Director

Ribbon Communications Inc.

Current · start date not disclosed

Confirmed by public sourceView source

Connections

Explore the roles, education and affiliations published in this record.

Ribbon Communications Inc.

Open Ribbon Communications Inc. profile →

Director at Ribbon Communications Inc.

Start not stated → End not stated

current · source reported

Observed: 2026-09-18

Ribbon Communicati…Ribbon Communications Inc.R. Stewart Ewing, …

Dashed lines mark past roles. Select a connection to see its dates and sources.

Relationship map

Connected through the public record

Direct relationships from verified facts and published résumé records. Private connections are excluded.

Direct public links only

Only published affiliations are shown here. Private relationships require authorized access.

Experience

Career history, education, credentials and public contributions.

Published record

Featured coverage

Selected publications and public sources used to establish this profile. Inclusion records provenance; it is not an endorsement.

Source 1 · Sec Def 14aPublic profile sourceSupports Director at Ribbon Communications Inc. (NASDAQ: RBBN).Open source

Basis

Identifiers, sources, dates and record limitations.

Identifiers

Alpha ID
alpha:person:r-stewart-ewing-jr
Record version
public-0

Sources

Sources and published information

Each item links to the public source used to support it. When sources disagree, the item is clearly marked for review.

Board membership · Source reportedServes on the board of Ribbon Communications Inc.1 source
Verification
Source reported
Confidence
Not stated
Last reviewed
Not stated
View all sources2 records
  1. https://www.sec.gov/Archives/edgar/data/1708055/000110465926044643/tm261552-1_def14a.htm

    Sec Def 14a · Tier not stated · Reviewed Sep 12, 2026

    Supports: Director at Ribbon Communications Inc. (NASDAQ: RBBN)

  2. https://www.sec.gov/Archives/edgar/data/1708055/000110465926044643/tm261552-1_def14a.htm

    Public Source · Tier not stated · Reviewed Not stated

    Supports: Board membership