Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 64,333	$ 139,259
Marketable securities	583,155	643,860
Accounts receivable, net	1,176	2,206
Inventory	17,274	8,492
Prepaid expenses and other current assets	38,414	38,955
Total current assets	704,352	832,772
Marketable securities	224,902	313,874
Operating lease assets	57,162	65,129
Property and equipment, net	16,785	22,987
Other non-current assets	4,057	3,956
Total assets	1,007,258	1,238,718
Current liabilities:
Accounts payable	13,271	18,616
Accrued expenses	30,490	30,350
Operating lease liabilities	14,664	13,663
Total current liabilities	58,425	62,629
Operating lease liabilities, net of current portion	60,834	71,996
Other non-current liabilities	1,156	3,279
Total liabilities	120,415	137,904
Stockholders’ equity:
Preferred stock, $0.001 par value; 25,000,000 shares authorized; no shares issued or outstanding at September 30, 2023 and December 31, 2022	0	0
Common stock, $0.001 par value; 125,000,000 shares authorized; 72,100,384 shares issued and 55,883,973 shares outstanding at September 30, 2023, and 71,256,118 shares issued and 55,039,707 shares outstanding at December 31, 2022	72	71
Additional paid-in capital	2,421,862	2,386,325
Accumulated other comprehensive loss	(5,896)	(12,535)
Treasury stock, at cost (16,216,411 shares at September 30, 2023 and December 31, 2022)	(802,486)	(802,486)
Accumulated deficit	(726,709)	(470,561)
Total stockholders’ equity	886,843	1,100,814
Total liabilities and stockholders’ equity	$ 1,007,258	$ 1,238,718