Sutro Biopharma, Inc. Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Summary of Significant Accounting Policies (Policies)
Notes Tables
Notes Details

Equity Incentive Plans, Employee Stock Purchase Plan and Stock-Based Compensation - Summary of Option Activity (Details)

v3.22.2

Equity Incentive Plans, Employee Stock Purchase Plan and Stock-Based Compensation - Summary of Option Activity (Details) - 2004 Plan, 2018 Plan and 2021 Plan $ / shares in Units, $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2022 USD ($) $ / shares shares	Dec. 31, 2021 USD ($) $ / shares shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock options outstanding, Beginning Balance, Shares \| shares	6,512,086
Granted, Shares \| shares	1,302,500
Exercised, Shares \| shares	(32,795)
Canceled and forfeited, Shares \| shares	(274,360)
Stock options outstanding, Ending Balance, Shares \| shares	7,507,431	6,512,086
Stock options exercisable, Shares \| shares	4,524,709
Stock options outstanding, Weighted - Average Exercise Price, Beginning Balance \| $ / shares	$ 13.86
Weighted - Average Exercise Price, Granted \| $ / shares	7.17
Weighted - Average Exercise Price, Exercised \| $ / shares	5.56
Weighted - Average Exercise Price, Canceled and forfeited \| $ / shares	14.79
Stock options outstanding, Weighted - Average Exercise Price, Ending Balance \| $ / shares	12.70	$ 13.86
Stock options exercisable, Weighted - Average Exercise Price, Exercisable \| $ / shares	$ 13.13
Weighted - Average Remaining Contract Term	7 years 4 months 24 days	7 years 4 months 20 days
Weighted - Average Remaining Contract Term, Exercisable	6 years 5 months 23 days
Aggregate Intrinsic Value, Balance \| $	$ 252	$ 14,955
Aggregate Intrinsic Value, Exercisable \| $	$ 10

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