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

Cash Equivalents and Marketable Securities - Schedule of Cash Equivalents and Marketable Securities (Details)

v3.19.3

Cash Equivalents and Marketable Securities - Schedule of Cash Equivalents and Marketable Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018	Sep. 30, 2018
Cash And Cash Equivalents [Line Items]
Amortized Cost Basis	$ 148,625	$ 195,443
Unrealized Gains	234	0
Unrealized (Losses)	(11)	(47)
Fair Value	148,848	195,396
Less amounts classified as cash equivalents, Amortized Cost Basis	(11,954)	(125,298)	$ (41,353)
Marketable Securities
Cash And Cash Equivalents [Line Items]
Amortized Cost Basis	138,209	79,241
Unrealized Gains	234	0
Unrealized (Losses)	(11)	(47)
Fair Value	138,432	79,194
Cash Equivalents
Cash And Cash Equivalents [Line Items]
Less amounts classified as cash equivalents, Amortized Cost Basis	(10,416)	(116,202)
Less amounts classified as cash equivalents, Fair Value	(10,416)	(116,202)
Money Market Funds
Cash And Cash Equivalents [Line Items]
Amortized Cost Basis	10,416	116,202
Unrealized Gains	0	0
Unrealized (Losses)	0	0
Fair Value	10,416	116,202
Commercial Paper
Cash And Cash Equivalents [Line Items]
Amortized Cost Basis	19,399	26,625
Unrealized Gains	0	0
Unrealized (Losses)	0	0
Fair Value	19,399	26,625
Corporate Debt Securities
Cash And Cash Equivalents [Line Items]
Amortized Cost Basis	64,917	11,795
Unrealized Gains	113	0
Unrealized (Losses)	(6)	(21)
Fair Value	65,024	11,774
Asset-backed Securities
Cash And Cash Equivalents [Line Items]
Amortized Cost Basis	26,978	16,920
Unrealized Gains	67	0
Unrealized (Losses)	(2)	(21)
Fair Value	27,043	16,899
U.S. Government Agencies
Cash And Cash Equivalents [Line Items]
Amortized Cost Basis	26,915	23,901
Unrealized Gains	54	0
Unrealized (Losses)	(3)	(5)
Fair Value	$ 26,966	$ 23,896

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