Note 18. Subsequent Events

On June 15, 2021, The Company issued 0.4 million shares of common stock to executives in connection with the vesting of RSUs granted on June 15, 2020 and subsequently issued following stockholder approval of the Amended and Restated 2012 Equity Incentive Plan on September 30, 2020.

From June 1, 2021 to July 23, 2021, the Company issued approximately 0.6 million shares of common stock in connection with the exercise of outstanding warrants and stock options covering approximately 0.6 million shares. The stated exercise prices ranged from $0.45 to $1.35 per share, which resulted in aggregate gross proceeds to the Company of approximately $0.5 million.

On June 11, 2021, June 21, 2021, and June 30, 2021, in satisfaction of the June 2021 Debt Redemption Amount, the Company and the November 2020 Note holder entered into exchange agreements, pursuant to which the November 2020 Note was partitioned into new notes (the “June 2021 Partitioned Notes”) with a principal amount equal to the June 2021

Debt Reduction Amount of $6.0 million. The outstanding balance of the November 2020 Note was reduced by the June 2021 Partitioned Notes. The Company and the investor exchanged the June 2021 Partitioned Notes for approximately 4.2 million shares. The Company and the holder of the November 2020 Note agreed to defer the remaining June 2021 Debt Redemption Amount of $1.5 million. Following these payments, the outstanding balance on the November 2020 Note, including accrued interest, was approximately $7.9 million.

On July 14, 2021 and July 27, 2021, in satisfaction of the July 2021 Debt Reduction Amount, the Company and the November 2020 Note holder entered into exchange agreements, pursuant to which the November 2020 Note was partitioned into new notes (the “July 2021 Partitioned Notes”) with a principal amount equal to the July 2021 Debt Reduction Amount of $4.0 million. The outstanding balance of the November 2020 Note was reduced by the July 2021 Partitioned Notes. The Company and the investor exchanged the July 2021 Partitioned Notes for approximately 3.3 million shares of common stock. The Company and the holder of the November 2020 Note agreed to defer the remaining July 2021 Debt Redemption Amount of $3.5 million. Following the June and July 2021 payments, the outstanding balance of the November 2020 Note, including accrued interest, was approximately $4.5 million.