A Raleigh-based biopolymer manufacturing company raised over $1.1 million from 18 investors, according to a filing with the Securities and Exchange Commission.

Tethis Inc. filed the Form D on Jan. 30. The date of the first sale for the offering was Dec. 30, 2016. According to the filing, the offering was not made in connection with a business combination transaction, such as a merger, acquisition or exchange offer. The company does not intend for this offering to last more than one year.

Originally started in 2013 as a spinout of novel technology aimed at the water treatment market discovered at N.C. State University, Tethis now makes biopolymers through its patented platform. Its biopolymers are used in a wide range of applications and industries, use common renewable feedstocks and conventional manufacturing equipment and are drop in replacements for common products.

Scott A. Bolin, chief executive officer and co-founder of Tethis, signed the Form D on Jan. 30. He studied English and history during his undergraduate career at The College of William and Mary and University of Cambridge, and completed his MBA in marketing and entrepreneurship at North Carolina State University.

Companies relying on the Rule 506 exemption do not have to register their offering of securities with the SEC, but they must file what’s known as a Form D electronically with the SEC after they first sell their securities.

The form can be found here.