secwatch / observer
RBBN Ribbon Communications Inc.
CIK 0001708055 16 ready 8-Ks latest April 28, 2026, 7:59 PM ET RSS · JSON
Activity: NORMAL 0 filings / 30d vs 0 baseline Risk accumulating: repeated leadership change (2)
Ready 8-Ks 16
Latest filing April 28, 2026, 7:59 PM ET
Top materiality 0.75
Event mix earnings ×9 · leadership ×4 · other_material ×1
Sentiment 7 pos · 3 neg · 6 neu
Latest earnings reported 2026-Q1
Executive change recent →

Recent 8-K filings for RBBN

Executive changes

Departed

John Townsend

Executive Vice President, Chief Financial Officer
RBBN · Ribbon Communications Inc.
Effective
2026-04-30
Successor
Eric “Rick” Marmurek
Filed
April 28, 2026, 7:59 PM ET
announced that John Townsend, Executive Vice President, Chief Financial Officer of the Company, has notified the Company that he is resigning effective April 30, 2026 to pursue another professional opportunity.
Appointed

Eric “Rick” Marmurek

Executive Vice President, Chief Financial Officer and Chief Accounting Officer
RBBN · Ribbon Communications Inc.
Effective
2026-05-01
Filed
April 28, 2026, 7:59 PM ET
the Company announced that it is promoting Eric “Rick” Marmurek to the position of Executive Vice President, Chief Financial Officer and Chief Accounting Officer of the Company effective May 1, 2026.
Appointed

John Townsend

Executive Vice President, Chief Financial Officer
RBBN · Ribbon Communications Inc.
Filed
October 4, 2024, 7:59 PM ET
On October 3, 2024, Ribbon Communications Inc. (the “Company”) announced the appointment of John Townsend as Executive Vice President, Chief Financial Officer of the Company, effective upon the earlier of the filing of the Company’s Form 10-Q for the quarter ended September 30, 2024 and November 1, 2024 (the “Effective Date”).
Departed

Miguel Lopez

Executive Vice President, Chief Financial Officer
RBBN · Ribbon Communications Inc.
Successor
John Townsend
Filed
October 4, 2024, 7:59 PM ET
As previously reported, Miguel Lopez, the Company’s current Executive Vice President, Chief Financial Officer, is retiring from the Company following the filing of the Company’s Form 10-Q for the quarter ended September 30, 2024.
Departed

Miguel "Mick" Lopez

Executive Vice President, Chief Financial Officer
RBBN · Ribbon Communications Inc.
Filed
August 13, 2024, 7:59 PM ET
On August 13, 2024, Ribbon Communications Inc. (“Ribbon” or the “Company”) announced that Miguel “Mick” Lopez, Executive Vice President, Chief Financial Officer, intends to retire from the Company after 40 years in the technology industry.

Earnings & guidance

2026-Q1 EPS reported -$0.20 filing →

Materiality & sentiment trend

Max materiality 0.75 · Median 0.68 · Most common event earnings

7 positive 3 negative 6 neutral

source · RBBN on sec.gov