Subsequent events

3 Months Ended

Mar. 31, 2019

Subsequent events [Abstract]

Subsequent events

Note 16

Subsequent events:

Series C Convertible Preferred Stock Conversion

During June 2019, investors converted shares of Series C Convertible Preferred Stock into 1,775,093 shares of common stock.

Expiration of Warrants

In April 2019, 137,143 warrants with an exercise price of $3.75 expired.

In July 2019, 1, 239,769 warrants with an exercise prices ranging from $3.75 to $12.25 expired.

Exercise of options

In May 2019, 15,000 stock options, with an exercise price of $1.29, were net exercised and the Company issued 7,586 shares of common stock.

Lease Agreement

On May 1, 2019, the Company entered into the Fifth Amendment to the Standard Industrial/Commercial Multi-Tenant Lease with FR National Life, LLC for its Carlsbad California facility. The term of the lease commences on October 1, 2019, and expires on September 30, 2024. The Company’s Carlsbad facility houses the manufacturing and development operations for our excimer laser business, as well as the patient call center and reimbursement center. The total lease payments to be made over the term is $1,107.