ENZN Enzon Pharmaceuticals, Inc.
ENZN was the NASDAQ ticker symbol of Enzon Pharmaceuticals, 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 “Enzon Pharmaceuticals, Inc.” as a former name of Viskase Holdings, Inc., which trades today as VISK.
ENZN at a glance
- Symbol
- ENZN
- Company / issuer
- Enzon Pharmaceuticals, Inc.
- Last exchange
- NASDAQ
- Status
- No longer listed
- Seen in listing files
- Jan 2015
ENZN ticker history
All listing names we have recorded under the symbol ENZN, from periodic snapshots of US exchange listing files.
| Name | Security | First seen | Last seen |
|---|---|---|---|
| Enzon Pharmaceuticals, 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 ENZN?
ENZN was the ticker symbol of Enzon Pharmaceuticals, Inc on NASDAQ.
Is ENZN still trading?
No. ENZN 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 VISK (Viskase Holdings, Inc.).
Which exchange was ENZN listed on?
ENZN was listed on NASDAQ.