PTBI PlasmaTech Biopharmaceuticals, Inc.
PTBI was the NASDAQ ticker symbol of PlasmaTech Biopharmaceuticals, 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 “Plasmatech Biopharmaceuticals Inc” as a former name of Abeona Therapeutics Inc., which trades today as ABEO.
PTBI at a glance
- Symbol
- PTBI
- Company / issuer
- PlasmaTech Biopharmaceuticals, Inc.
- Last exchange
- NASDAQ
- Status
- No longer listed
- Seen in listing files
- Jan 2015
PTBI ticker history
All listing names we have recorded under the symbol PTBI, from periodic snapshots of US exchange listing files.
| Name | Security | First seen | Last seen |
|---|---|---|---|
| PlasmaTech Biopharmaceuticals, 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.
Other symbols for PlasmaTech Biopharmaceuticals, Inc.
Frequently asked questions
What company has the ticker symbol PTBI?
PTBI was the ticker symbol of PlasmaTech Biopharmaceuticals, Inc on NASDAQ.
Is PTBI still trading?
No. PTBI 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 ABEO (Abeona Therapeutics Inc.).
Which exchange was PTBI listed on?
PTBI was listed on NASDAQ.