Renee Gaeta
Analyst · Sean Lavin with BTIG
Thank you, Juan Jose, and thank you again, everyone, for joining today's call. As mentioned by Juan Jose, we are pleased with the second quarter and continue to exceed our internal expectations. You can find greater detail on our second quarter and 6-month financials on our earnings press release as well as our 10-Q, which we plan to file later today.
Total revenues for the second quarter were $13.7 million, which represents 58.9% growth over the second quarter of 2017. Total revenues for the 6 months ended June 30, 2018, were $28.5 million, representing an 83.5% increase as compared to the same period in 2017. The increase in the second quarter and the 6 months ended June 30, 2018, was primarily due to increased sale of Motiva Implants, driven by greater market penetration in existing and new geographies, most notably, our direct market in Brazil.
Gross profit for the second quarter was $8.2 million or 59.9% of revenues as compared to gross profit of $4.1 million or 47.8% of revenues for the second quarter in 2017. Gross profit for the 6 months ended June 30, 2018, was $16.1 million or 56.6% of revenues compared to gross profit of $7.5 million or 48.5% of revenues in the same period in 2017.
The increase in gross margin for the second quarter and the 6 months ended June 30, 2018, was due to an increase in production volume that spread our fixed manufacturing costs over a larger number of units and the addition of direct market revenues in areas such as Brazil, which generally have higher average selling prices.
Total operating expenses for the second quarter of 2018 were $14.5 million, an increase of 51.3% as compared to the same quarter in 2017. SG&A expenses increased $2.7 million or 33.3% to $10.8 million mainly due to the hiring of additional sales and administrative employees, an increase in consulting and audit fees and an increase in sales commissions. Additionally, our R&D expense increased $2.2 million or 150.2% to $3.7 million due to the initiation of our FDA clinical trial in the United States. During the second quarter, we continued to effectively manage our capital structure, allocating resources to efforts that will increase our market share and help bring our products to new geographies.
Net losses for the second quarter decreased to $5.4 million from $12.1 million for the same period in 2017, while net losses for the 6 months ended June 30, 2018, decreased to $11.9 million from $17.1 million for the same period in 2017.
Moving forward, we will continue to make strategic investments in manufacturing, marketing, customer service and our direct sales force in territories like Brazil and Europe. Additionally, we intend to continue to make significant investments in our FDA clinical trial in the United States.
The company has a cash balance of -- at June 30, 2018, of $11 million -- $11.6 million, and as Juan Jose mentioned earlier, we received approximately $71.5 million in net proceeds from our IPO after deducting underwriter discounts.
With that being said, I will now turn the call back over to Juan Jose for concluding remarks. Juan Jose?