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Stock Award Plans (Tables)

12 Months Ended

Dec. 31, 2023

Share-Based Payment Arrangement [Abstract]

Stock Based Award Plans

The following table summarizes information about the Company’s stock-based award plans as of December 31, 2023:

		Outstanding Options				Outstanding Restricted Stock Units				Shares Available for Future Issuance
2013 Equity Incentive Plan			2,966,524				—				—
2018 Equity Incentive Plan			5,434,087				12,363,934				26,374,063
Total			8,400,611				12,363,934				26,374,063

Stock Based Compensation Expense Recognized in Consolidated Statements of Operations by Category

Total stock-based compensation expense recognized in the consolidated statements of operations is included in the following categories (in thousands):

		Year Ended December 31,
		2023				2022				2021
Cost of goods sold		$	1,589			$	329			$	407
Cost of revenue — collaborations and services			897				1,425				1,708
Research and development			1,442				1,044				614
Selling			2,291				1,194				2,578
General and administrative			11,430				9,455				6,893
Total		$	17,649			$	13,447			$	12,200

Summary of Stock Options Outstanding

The following table summarizes information relating to stock options:

		Number of Shares				Weighted Average Exercise Price per Share				Weighted Average Remaining Contractual Term (Years)				Aggregate Intrinsic Value ($000)
Outstanding as of January 1, 2023			9,074,587			$	3.06				5.10			$	29,512
Granted			—				—
Exercised			(445,376	)			1.57
Forfeited			(3,420	)			2.53
Expired			(225,180	)			30.97
Outstanding as of December 31, 2023			8,400,611			$	2.39				4.07			$	15,153
Exercisable as of December 31, 2023			7,938,892			$	2.40				4.12			$	14,450

Summary of Restricted Stock Unit Activity

The following table summarizes information relating to restricted stock units:

		Number of Shares				Weighted Average Grant Date Fair Value per Share
Outstanding as of January 1, 2023			11,838,329			$	3.65
Granted			7,531,650				5.17
Vested			(6,053,264	)			3.41
Forfeited			(952,781	)			4.80
Outstanding as of December 31, 2023			12,363,934				4.61

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Tabular disclosure of share-based payment arrangement.

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Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement.

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Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

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Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year.

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