PRTK Paratek Pharmaceuticals Inc.
NASDAQNo longer listedCommon stock
PRTK was the NASDAQ ticker symbol of Paratek 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.
PRTK at a glance
- Symbol
- PRTK
- Company / issuer
- Paratek Pharmaceuticals Inc.
- Security type
- Common stock
- Last exchange
- NASDAQ
- Status
- No longer listed
- Seen in listing files
- Jan 2015 – Aug 2023
- Sector
- Health Care
- Industry
- Biotechnology: Pharmaceutical Preparations
- Country
- United States
- Last reported market cap
- $126.1 million (Aug 2023)
PRTK ticker history
All listing names we have recorded under the symbol PRTK, from periodic snapshots of US exchange listing files.
| Name | Security | First seen | Last seen |
|---|---|---|---|
| Paratek Pharmaceuticals Inc. | Common Stock | Jan 2015 | Aug 2023 |
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 PRTK?
PRTK was the ticker symbol of Paratek Pharmaceuticals Inc on NASDAQ.
Is PRTK still trading?
No. PRTK does not appear in current US exchange listings as of Sep 2026; it was last seen in our listing snapshots in Aug 2023.
Which exchange was PRTK listed on?
PRTK was listed on NASDAQ.
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