Split History
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Paratek Pharmaceuticals is a clinical stage biopharmaceutical company focused on the development and commercialization of therapeutics based upon tetracycline chemistry. Co. creates chemically diverse and biologically distinct small molecules derived from the minocycline core structure. Co.'s two key product candidates are: antibacterials omadacycline, an aminomethylcycline antibiotics for use as a monotherapy antibiotic for acute bacterial skin and skin structure infections, community-acquired bacterial pneumonia, urinary tract infection, and other bacterial infections; and sarecycline, a tetracycline-derived compound designed for use in the treatment of acne and rosacea. According to our PRTK split history records, Paratek Pharmaceuticals has had 1 split.
PRTK split history picture
Paratek Pharmaceuticals (PRTK) has 1 split in our PRTK split history database. The split for PRTK took place on October 31, 2014. This was a 1 for 12 reverse split, meaning for each 12 shares of PRTK owned pre-split, the shareholder now owned 1 share. For example, a 1000 share position pre-split, became a 83.3333333333333 share position following the split.

When a company such as Paratek Pharmaceuticals conducts a reverse share split, it is usually because shares have fallen to a lower per-share pricepoint than the company would like. This can be important because, for example, certain types of mutual funds might have a limit governing which stocks they may buy, based upon per-share price. The $5 and $10 pricepoints tend to be important in this regard. Stock exchanges also tend to look at per-share price, setting a lower limit for listing eligibility. So when a company does a reverse split, it is looking mathematically at the market capitalization before and after the reverse split takes place, and concluding that if the market capitilization remains stable, the reduced share count should result in a higher price per share. Looking at the PRTK split history from start to finish, an original position size of 1000 shares would have turned into 83.3333333333333 today. Below, we examine the compound annual growth rate — CAGR for short — of an investment into Paratek Pharmaceuticals shares, starting with a $10,000 purchase of PRTK, presented on a split-history-adjusted basis factoring in the complete PRTK split history. PRTK split adjusted history picture

Growth of $10,000.00
With Dividends Reinvested

Start date: 07/20/2009
End date: 07/19/2019
Start price/share: $55.80
End price/share: $3.32
Starting shares: 179.21
Ending shares: 596.28
Dividends reinvested/share: $31.97
Total return: -80.20%
Average Annual Total Return: -14.95%
Starting investment: $10,000.00
Ending investment: $1,979.48
Years: 10.00
Growth of $10,000.00
Without Dividends Reinvested

Start date: 07/20/2009
End date: 07/19/2019
Start price/share: $55.80
End price/share: $3.32
Dividends collected/share: $31.97
Total return: -36.75%
Average Annual Total Return: -4.48%
Starting investment: $10,000.00
Ending investment: $6,322.50
Years: 10.00
Date Ratio
10/31/20141 for 12
PRTK is categorized under the Healthcare sector; below are some other companies in the same sector that also have a history of stock splits:

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