Shares of online pet product retailer Chewy (CHWY) were volatile after hours Thursday after the company reported top- and bottom-line results that were in-line with guidance.

The Dania Beach, FL-based company reported a loss of $29.6 million on revenue of $1.11 billion, a 45.2% increase year over year.  

The company's shares had a muted response to the in-line performance, with the stock both rising and falling slightly following the release. 

"We are pleased to report strong first quarter 2019 results as a newly public company with net sales growing 45 percent year-over-year, and gross margin increasing 330 basis points year-over-year," said CEO Sumit Singh.

Chewy raised more than $1 billion when it debuted in June. This was the company's first public earnings release since it debuted on the New York Stock Exchange. 

"We will continue to innovate with a keen focus on delivering the best customer experience as we execute on our mission to become the most trusted and convenient online destination for pet parents," Singh said.