SONS Sonus Networks, Inc.
SONS was the NASDAQ ticker symbol of Sonus Networks, Inc. It no longer appears in current US listing files, which usually means the security was delisted, acquired, merged, or moved to a new symbol. SEC records list “Sonus Networks, Inc.” as a former name of Ribbon Communications Inc., which trades today as RBBN.
SONS at a glance
- Symbol
- SONS
- Company / issuer
- Sonus Networks, Inc.
- Last exchange
- NASDAQ
- Status
- No longer listed
- Seen in listing files
- Jan 2015
SONS ticker history
All listing names we have recorded under the symbol SONS, from periodic snapshots of US exchange listing files.
| Name | Security | First seen | Last seen |
|---|---|---|---|
| Sonus Networks, Inc. | — | Jan 2015 | Jan 2015 |
Snapshots have gaps (notably 2018–2021, and 2015–2021 for NYSE listings), so the actual delisting date may be later than the last-seen date.
Frequently asked questions
What company has the ticker symbol SONS?
SONS was the ticker symbol of Sonus Networks, Inc on NASDAQ.
Is SONS still trading?
No. SONS does not appear in current US exchange listings as of Sep 2026; it was last seen in our listing snapshots in Jan 2015. The company now appears to trade as RBBN (Ribbon Communications Inc.).
Which exchange was SONS listed on?
SONS was listed on NASDAQ.