---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-22-041790"
form_type: "8-K"
ticker: "RBBN"
cik: "0001708055"
company_name: "Ribbon Communications Inc."
filed_at: "2022-04-01T23:59:59+00:00"
generated_at: "2026-06-26T10:51:51.639532+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.25
calibrated_materiality_score: 0.25
confidence: "high"
source: SEC EDGAR
---

# Krish Prabhu not standing for re-election to Ribbon board; board size to reduce to 8

## Summary
- Krish A. Prabhu will not stand for re-election at the 2022 annual meeting; he remains on board and committees until then.
- Board size to be set at eight members effective as of the annual meeting, with no vacancy created.
- Prabhu served on Ribbon's Board and committees; company thanked him for his leadership in IP Optical networking strategy.

## SEC filing metadata
- accession: 0001104659-22-041790
- form_type: 8-K
- ticker: RBBN
- cik: 0001708055
- company_name: Ribbon Communications Inc.
- filed_at: 2022-04-01T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.25
- calibrated_materiality_score: 0.25
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1708055/000110465922041790/0001104659-22-041790-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1708055/000110465922041790/tm2211071d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-22-041790
- JSON: https://secwatch.observer/filing/0001104659-22-041790.json
- Plain text: https://secwatch.observer/filing/0001104659-22-041790.txt

## Key facts
- Executive change
  Krish A. Prabhu departed as Director at Ribbon Communications Inc..
  - Action: does not stand for re-election
  - Role: Director
  source text: Krish A. Prabhu, a member of the Company's Board of Directors (the "Board"), determined that he does not intend to stand for re-election as a director of the Company when his term expires at the Annual Meeting.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1708055/000110465922041790/0001104659-22-041790-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.