How many institutions held STRO - Sutro Biopharma, Inc. - Common Stock, $0.001 par value per share in Q3 2020?

87 institutional investors reported STRO - Sutro Biopharma, Inc. - Common Stock, $0.001 par value per share for Q3 2020. Use the holders table for investor-level position and value details.

Sutro Biopharma, Inc. - Common Stock, $0.001 par value per share (STRO)

Q: What does CUSIP 869367102 represent in this 13F holders report?

CUSIP 869367102 is the security identifier for STRO - Sutro Biopharma, Inc. - Common Stock, $0.001 par value per share used to aggregate holder disclosures.

CUSIP: 869367102

Q3 2020 13F Holders as of 30 Sep 2020

Security type / class: Equity / Common Stock, $0.001 par value per share
Total 13F shares: 31,151,440
Total 13F value: $313,088,624
Share change: +6,548,303
SEC-reported price per share: $10.05
Number of holders: 87
Value change: +$67,545,691
Number of buys: 57
Number of sells: 25
Shares outstanding: 16,607,375

Security key

869367102

Report period

Q3 2020

Institutions

Top holders

STRO full security history Ownership snapshot Full 13F holder table Newer quarter: Q4 2025 SUTRO BIOPHARMA, INC. SEC filings SUTRO BIOPHARMA, INC. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 869367102

Newer quarter: Q4 2025

Recent filing periods:

Q3 2026 Q2 2026 Q1 2026 Q4 2025

Ownership snapshot

Top reported holders of STRO - Sutro Biopharma, Inc. - Common Stock, $0.001 par value per share (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

BVF INC/IL

Disclosed value leader

BVF INC/IL

Comparable rows

0/15

Latest evidence

30 Jun 2020

13F Highest disclosed value: $18,379,000 15 rows are not safely comparable across share classes. Showing 1-6 of 15 holder rows.

Quick read

BVF INC/IL has the largest disclosed position value at $18.38M.

0 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens BVF INC/IL's linked filing trail.

Disclosed position value Top 5

BVF INC/IL $18.38M

EVENTIDE ASSET MANAGEMENT, LLC $15.41M

RA CAPITAL MANAGEMENT, L.P. $14.9M

EcoR1 Capital, LLC $14.19M

SV Health Investors, LLC $14.16M

Value bars compare disclosed positions; verify each figure against the linked filing evidence.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
BVF INC/IL	13F Company 13F	— denominator unverified	$18,379,000 2,368,392 shares	—	30 Jun 2020
EVENTIDE ASSET MANAGEMENT, LLC	13F Company 13F	— denominator unverified	$15,411,000 1,985,975 shares	—	30 Jun 2020
RA CAPITAL MANAGEMENT, L.P.	13F Company 13F	— denominator unverified	$14,896,000 1,919,644 shares	—	30 Jun 2020
EcoR1 Capital, LLC	13F Company 13F	— denominator unverified	$14,189,000 1,828,492 shares	—	30 Jun 2020
SV Health Investors, LLC	13F Company 13F	— denominator unverified	$14,158,000 1,824,542 shares	—	30 Jun 2020
Samsara BioCapital, LLC	13F Company 13F	— denominator unverified	$13,002,000 1,675,579 shares	—	30 Jun 2020

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q3 2020

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

31,151,440

Rows available

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q3 2020 vs Q2 2026 Across Filers

Q2 2026 holders

Q3 2020 holders

Holder diff

Investor	Q2 2026 Shares	Q3 2020 Shares	Share Diff	Share Chg %	Q2 2026 value	Q3 2020 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend