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Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 2024

Class of Stock Disclosures [Abstract]

Schedule of Common Stock Reserved for Future Issuance

The following table presents common stock reserved for future issuance(1) (in thousands):


	March 31, 2024		December 31, 2023
Stock options issued and outstanding		2,494		2,104
Stock awards issued and outstanding		1,080		817
Authorized for grants under the 2016 Equity Incentive Plan(2)		55		448
Authorized for grants under the Inducement Plan(3)		180		174
Authorized for grants under the 2016 Employee Stock Purchase Plan(4)		517		540
		4,326		4,083

(1) The table above excludes 541,000 treasury stock shares as of March 31, 2024 and December 31, 2023.

(2) On January 1, 2024, the number of authorized shares in the 2016 Plan increased by 440,000 shares pursuant to the evergreen provisions of the 2016 Plan.

(3) On February 5, 2021, 300,000 shares were authorized pursuant to the terms of the Inducement Plan.

(4) On January 1, 2024, the number of authorized shares in the 2016 Employee Stock Purchase Plan increased by 100,000 shares pursuant to the evergreen provisions of the 2016 Employee Stock Purchase Plan.

Issuance of Common Stock

In March 2024, we established an at-the-market ("ATM") offerings program to sell up to $5.0 million of the Company's common stock. During the three months ended March 31, 2024, we issued 124,600 shares of common stock for $0.7 million gross proceeds. The Company incurred $0.2 million of offering costs, which are recorded in additional paid-in capital in the consolidated balance sheet.