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Derivative exercise or conversion — not an open-market buy.
Written from the filing's own figures. OQRO describes what was reported and never tells you what to buy or sell.
View the official recordSEC Form 4 — Statement of Changes in Beneficial OwnershipAll the details
Dates, kept separate
Transaction date
May 15, 2026
Reporting period
Not applicable
Filed with the SEC
May 19, 2026
OfficerOption exercise
Context
Classification
option exercise
Code M — exercise or conversion of a derivative security
Planned / mechanical clue
Footnote references vesting of compensation awards
Only flagged when a footnote says so; never inferred
Source receipt
Record ID
0001708055-26-000035
Filed / recorded
May 19, 2026, 12:12 PM UTC
Added to OQRO
Oct 8, 2026, 12:30 AM UTC
Parser
form4-xml-v2
Data quality
Verified: identifiers matched exactly
Issuer
Ribbon Communications Inc.
Issuer CIK
1708055
Ticker
RBBN
Reporting person
Sam Bucci
Relationship
Officer
Officer title
EVP, Chief Operating Officer
Security
RSUs
Table
Derivative (Table II)
Transaction date
May 15, 2026
Transaction code
M
Shares / units
83,335
Price per share
$0.00
Acquired / disposed
Disposed (D)
Shares owned after
166,665
Ownership form
Direct
Amendment
No
Footnotes from the filing
Each Restricted Share Unit (RSU) and Performance Share Unit (PSU) converts into common stock on a one-for-one basis.
The RSUs were granted on May 15, 2025 and vested as to one-third on May 15, 2026; the remaining two-thirds of the RSUs will vest in four equal semi-annual installments thereafter through May 15, 2028.
Every dated public record OQRO holds about the company from 60 days before to 120 days after, oldest first. It shows what was going on; none of it is a stated reason for the trade.
