Senseonics (SENS) said late Monday it expects Q3 preliminary revenue of $8.1 million, up 91% from a year earlier.

Analysts polled by FactSet expected $7.8 million.

The company also said it will conduct a reverse stock split at a ratio of one-for-20 to reduce the number of its shares to about 41 million from about 816 million.

The firm said shares will start trading on a post-split basis Oct. 20.

The shares were down over 6% in after-hours activity.