What does CUSIP 869367201 represent in this 13F holders report?

CUSIP 869367201 is the security identifier for STRO - SUTRO BIOPHARMA, INC. - Common Stock, $0.001 par value used to aggregate holder disclosures.

How many institutions held STRO - SUTRO BIOPHARMA, INC. - Common Stock, $0.001 par value in Q1 2026?

69 institutional investors reported STRO - SUTRO BIOPHARMA, INC. - Common Stock, $0.001 par value for Q1 2026. Use the holders table for investor-level position and value details.

SUTRO BIOPHARMA, INC. - Common Stock, $0.001 par value (STRO)

CUSIP: 869367201

Q1 2026 13F Holders as of 31 Mar 2026

Security type / class: Equity / Common Stock, $0.001 par value
Total 13F shares: 14,095,307
Total 13F value: $351,112,986
Share change: +8,339,717
SEC-reported price per share: $24.91
Number of holders: 69
Value change: +$214,425,468
Number of buys: 43
Number of sells: 20
Shares outstanding: 16,470,895

Security key

869367201

Report period

Q1 2026

Institutions

Top holders

STRO full security history Ownership snapshot Full 13F holder table Previous 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 869367201

Previous quarter: Q4 2025

Recent filing periods:

Q1 2026 Q4 2025

Ownership snapshot

Top reported holders of STRO - SUTRO BIOPHARMA, INC. - Common Stock, $0.001 par value (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

BIOTECHNOLOGY VALUE FUND L P

Disclosed value leader

Affinity Asset Advisors, LLC

Comparable rows

15/15

Latest evidence

31 Mar 2026

13D/G 13F 3/4/5 Lead comparable stake: 7.6% 13D/G row: BIOTECHNOLOGY VALUE FUND L P Showing 1-6 of 15 holder rows.

Quick read

BIOTECHNOLOGY VALUE FUND L P leads the comparable SEC ownership view at 7.6%.

15 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 BIOTECHNOLOGY VALUE FUND L P's linked filing trail.

Comparable ownership Top 5

BIOTECHNOLOGY VALUE FUND L P 7.6%

Affinity Asset Advisors, LLC 6.5%

Samsara BioCapital, L.P. 6.4%

Kynam Capital Management, LP 5.3%

VANGUARD GROUP INC 4.9%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

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

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
BIOTECHNOLOGY VALUE FUND L P	13D/G BVF PARTNERS L P/IL 13D/G	7.6%	$13,306,506 1,251,788 shares	$0	10 Feb 2026
Affinity Asset Advisors, LLC	13D/G 13F Company 13D/G 13F	6.5%	$26,642,467 1,069,519 shares	-$137,363,902	31 Mar 2026
Samsara BioCapital, L.P.	13D/G Srinivas Akkaraju 13D/G	6.4%	$26,476,886 1,062,872 shares	$0	11 Feb 2026
Kynam Capital Management, LP	13F 13D/G Company 13F 13D/G	5.3% from 13D/G	$5,548,856 479,590 shares	—	31 Dec 2025
VANGUARD GROUP INC	13F 13D/G Company · The Vanguard Group 13F 13D/G	4.9% from 13D/G	$4,347,844 375,786 shares	—	31 Dec 2025
BlackRock, Inc.	13D/G 13F Company 13D/G 13F	2.5%	$1,493,679 2,092,281 shares	-$2,892,242	30 Jun 2025

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 Q1 2026

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

Institutions

14,095,307

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 Q1 2026 vs Q4 2025 Across Filers

Q4 2025 holders

Q1 2026 holders

Holder diff

Investor	Q4 2025 Shares	Q1 2026 Shares	Share Diff	Share Chg %	Q4 2025 value	Q1 2026 value	Value change	Value Chg %

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

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend