2019 Inducement Stock Incentive Plan, as amended (the “2019 Inducement Plan”), and the 2014 Employee Stock Purchase Plan (the “ESPP”) (collectively, the “Stock Plans”). The 2021 Plan and the 2019 Inducement Plan provide for the grant of non-statutory stock options, restricted stock awards, restricted stock units (“RSUs”), stock appreciation rights and other stock-based awards. The 2021 Plan also provides for the grant of incentive stock options.
The terms and conditions of the Stock Plans are described in the Company’s Annual Report on Form 10-K for the year ended December 31, 2023, filed with the SEC on March 11, 2024. Subsequent updates to Stock Plans during the three and nine months ended September 30, 2024 are as follows:
2021 Plan - On June 12, 2024, the Company’s shareholders approved an amendment of the 2021 Plan to increase the aggregate number of shares issuable thereunder by 7,000,000.
2019 Inducement Plan - On February 20, 2024, the Company’s board of directors amended the 2019 Inducement Plan to increase the aggregate number of shares issuable thereunder from 1,054,000 to 3,804,000 shares of common stock. On April 16, 2024, the board of directors of the Company further amended the 2019 Inducement Plan to increase the aggregate number of shares issuable thereunder from 3,804,000 to 4,804,000 shares of common stock.
ESPP - On January 1, 2024, the number of shares available for issuance under the ESPP increased from 398,784 to 606,186.
As of September 30, 2024, 8,806,487, 258,481, and 485,380 shares of common stock remained available for issuance under the 2021 Plan, the 2019 Inducement Plan, and the ESPP, respectively.
Stock options and RSUs
During the three and nine months ended September 30, 2024, the Company granted options to purchase 847,287 and 7,675,358 shares of common stock, respectively, at a weighted exercise price of $8.05 and $7.22 per share, respectively. Of these, options to purchase 532,087 and 4,860,714 shares of common stock, respectively, were granted under the 2021 Plan, and options to purchase 315,200 and 2,814,644 shares of common stock, respectively, were granted under the 2019 Inducement Plan.
During the three and nine months ended September 30, 2024, the Company granted 359,410 and 2,971,167 RSUs, respectively. Of these, 254,346 and 1,610,117 RSUs, respectively, were granted under the 2021 Plan, and 105,064 and 1,361,050 RSUs, respectively, were granted under the 2019 Inducement Plan. Each RSU is settleable for one share of common stock upon vesting.
During the three and nine months ended September 30, 2024, 795,230 and 1,835,491 stock options, respectively, and 159,658 and 426,500 RSUs, respectively, expired or were forfeited.
Stock-based Compensation
The Company recorded stock-based compensation expense related to stock options and RSUs in the following expense categories of its unaudited condensed consolidated statements of operations and comprehensive loss:
| | | | | | | | | | | | | |
| | Three Months Ended | | Nine Months Ended | |
| | September 30, | | September 30, | |
| | 2024 | | 2023 | | 2024 | | 2023 | |
Research and development | | $ | 2,796 | | $ | 1,115 | | $ | 6,595 | | $ | 3,390 | |
Selling and marketing | | | 787 | | | 934 | | | 2,313 | | | 2,948 | |
General and administrative | | | 3,058 | | | 2,463 | | | 17,004 | | | 7,159 | |
| | $ | 6,641 | | $ | 4,512 | | $ | 25,912 | | $ | 13,497 | |
During the nine months ended September 30, 2024 vesting of certain stock options and RSUs granted to two former executives of the Company was accelerated upon their departures from the Company, resulting in incremental stock-based compensation expense of $7,493.