Subsequent events	12 Months Ended
Dec. 31, 2022
Subsequent events
Subsequent events	12. Subsequent events Reverse Stock Split On February 10, 2023, the Company effectuated a one-for-twenty reverse stock split of its outstanding shares of common stock (the “Reverse Stock Split”). The Reverse Stock Split reduces the Company’s shares of outstanding common stock, stock options and RSU’s. Fractional shares of common stock that would have otherwise resulted from the Reverse Stock Split were rounded down to the nearest whole share and cash in lieu of payments were made to stockholders. All share and per share data for all periods presented in the accompanying financial statements and the related disclosures have been adjusted retrospectively to reflect the Reverse Stock Split. The number of authorized shares of common stock and the par value per share remains unchanged. Common Stock Offering On February 27, 2023, the Company completed an underwritten public offering of 1,050,000 shares of its common stock at a public offering price of $5.25 per share. Gross proceeds from the offering before deducting underwriting discounts and commissions and offering expenses are approximately $5.5 million before deducting underwriting discounts and offering expenses.

Subsequent events

12 Months Ended

Dec. 31, 2022

12. Subsequent events

Reverse Stock Split

On February 10, 2023, the Company effectuated a one-for-twenty reverse stock split of its outstanding shares of common stock (the “Reverse Stock Split”). The Reverse Stock Split reduces the Company’s shares of outstanding common stock, stock options and RSU’s. Fractional shares of common stock that would have otherwise resulted from the Reverse Stock Split were rounded down to the nearest whole share and cash in lieu of payments were made to stockholders. All share and per share data for all periods presented in the accompanying financial statements and the related disclosures have been adjusted retrospectively to reflect the Reverse Stock Split. The number of authorized shares of common stock and the par value per share remains unchanged.

Common Stock Offering

On February 27, 2023, the Company completed an underwritten public offering of 1,050,000 shares of its common stock at a public offering price of $5.25 per share. Gross proceeds from the offering before deducting underwriting discounts and commissions and offering expenses are approximately $5.5 million before deducting underwriting discounts and offering expenses.