Company · Ownership research

SUTRO BIOPHARMA, INC. STRO

CIK 0001382101 · CUSIP 869367201

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 869367201 (STRO), not CUSIP 869367102 (STRO), CUSIP 869367901 (STRO), CUSIP 869367902 (STRO), and does not merge CUSIPs.

This page lists the top 20 of 71 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	BVF INC/IL CIK 1056807 · View history	$31.18M 1,251,788 shares	0.99%	+1.25MNew	SEC filing ↗ May 15, 2026	▾
02	Affinity Asset Advisors, LLC CIK 1773195 · View history	$26.64M 1,069,519 shares	1.56%	+321.14K(+42.90%)Added	SEC filing ↗ May 14, 2026	▾
03	Samsara BioCapital, LLC CIK 1744967 · View history	$26.48M 1,062,872 shares	2.57%	+858.37K(+419.70%)Added	SEC filing ↗ May 15, 2026	▾
04	Kynam Capital Management, LP CIK 1907884 · View history	$21.74M 872,558 shares	1.38%	+392.97K(+81.90%)Added	SEC filing ↗ May 15, 2026	▾
05	ORBIMED ADVISORS LLC CIK 1055951 · View history	$19.96M 801,144 shares	0.44%	+801.14KNew	SEC filing ↗ May 15, 2026	▾
06	VANGUARD CAPITAL MANAGEMENT LLC CIK 2100119 · Amended · View history	$17.95M 720,442 shares	0.00%	—	SEC filing ↗ May 15, 2026	▾
07	PERCEPTIVE ADVISORS LLC CIK 1224962 · Amended · View history	$17.82M 715,307 shares	0.35%	+715.31KNew	SEC filing ↗ May 29, 2026	▾
08	RA CAPITAL MANAGEMENT, L.P. CIK 1346824 · View history	$17.82M 715,307 shares	0.19%	+715.31KNew	SEC filing ↗ May 15, 2026	▾
09	EVENTIDE ASSET MANAGEMENT, LLC CIK 1442891 · View history	$17.82M 715,307 shares	0.29%	+715.31KNew	SEC filing ↗ May 15, 2026	▾
10	Point72 Asset Management, L.P. CIK 1603466 · View history	$17.24M 692,111 shares	0.03%	+513.02K(+286.50%)Added	SEC filing ↗ May 15, 2026	▾
11	ADAR1 Capital Management, LLC CIK 1940272 · View history	$13.06M 524,441 shares	0.79%	+457.36K(+681.80%)Added	SEC filing ↗ May 18, 2026	▾
12	Velan Capital Investment Management LP CIK 1848809 · View history	$12.76M 512,160 shares	7.99%	+200.16K(+64.20%)Added	SEC filing ↗ May 15, 2026	▾
13	Balyasny Asset Management L.P. CIK 1218710 · View history	$11.60M 465,792 shares	0.02%	+235.74K(+102.50%)Added	SEC filing ↗ May 15, 2026	▾
14	Woodline Partners LP CIK 1784547 · Amended · View history	$11.39M 457,441 shares	0.04%	+457.44KNew	SEC filing ↗ May 15, 2026	▾
15	UBS Group AG CIK 1610520 · View history	$9.79M 392,871 shares	0.00%	+385.00K(+4,892.00%)Added	SEC filing ↗ May 5, 2026	▾
16	ACADIAN ASSET MANAGEMENT LLC CIK 916542 · View history	$8.36M 335,813 shares	0.01%	-2.14K(-0.60%)Reduced	SEC filing ↗ May 13, 2026	▾
17	ACUTA CAPITAL PARTNERS, LLC CIK 1582844 · View history	$6.71M 269,425 shares	4.77%	+201.97K(+299.40%)Added	SEC filing ↗ May 15, 2026	▾
18	BlackRock, Inc. CIK 2012383 · View history	$5.80M 232,684 shares	0.00%	+115.25K(+98.10%)Added	SEC filing ↗ May 13, 2026	▾
19	KVP Capital Advisors, LP CIK 1858198 · View history	$5.64M 226,575 shares	4.22%	+226.57KNew	SEC filing ↗ May 13, 2026	▾
20	MARSHALL WACE, LLP CIK 1318757 · View history	$5.55M 222,634 shares	0.01%	+137.02K(+160.00%)Added	SEC filing ↗ May 15, 2026	▾

Showing 20 / 71 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

Cancelled or null records excluded

Disclosed shares

14,095,360

Not deduplicated across managers

Disclosed value

$351.11M

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

SUTRO BIOPHARMA, INC. · Q1 2026

Explore all 71 reporting institutions.

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.