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RIBBON COMMUNICATIONS INC (RBBN)

Institutional ownership, SEC filings and insider activity

Sector: Technology · SEC CIK 0001708055 · EDGAR filings · Updated 2026-07-28

RIBBON COMMUNICATIONS INC (RBBN) has reported institutional ownership of 73.4%, with 149 institutional managers holding positions valued at $268.2M per the latest 13F reporting period. SEC filings include an active substantial-doubt (going concern) disclosure per the filings.

Institutional ownership
73.4%
Institutional managers
149
Reported 13F value
$268.2M
Insider activity
59 trans.
−$726.8K net selling
Data flags
1 active
from SEC filings

Filings this week (1)

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Latest updates

Institutional ownership overview

According to SEC 13F filings tracked by Sightfile, RIBBON COMMUNICATIONS INC has 149 institutional holders and institutional ownership of 73.4%.

Insider activity

Insiders reported 59 transactions (4 buys, 5 sells) across 14 reporting insiders, with a net reported value of −$726.8K.

Data flags from SEC filings

Active substantial-doubt (going concern) disclosure per the filings, most recently filed 2024-07-29 (recurring since 2024-05-15) — source filing. The authoritative details are those stated in the filing itself.

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Sightfile provides information only — not investment advice, recommendations, or an assessment of any security. Data is derived from official public sources (SEC EDGAR and U.S. government agencies), may contain errors or delays, and should be verified against the source filing before relying on it.
Data sources: SEC EDGAR (filings, 13F, FTD), aggregated by Sightfile. Page updated 2026-07-28.