Security key
869367102
Sutro Biopharma, Inc. - Common Stock, $0.001 par value per share (STRO)
CUSIP: 869367102
Q1 2026 13F Holders as of 31 Mar 2026
- Type / Class
- Equity / Common Stock, $0.001 par value per share
- Shares outstanding
- 16,607,375
- Total 13F shares
- 290,038
- Share change
- -1
- Total reported value
- $7,224,847
- Price per share
- $24.91
- Number of holders
- 7
- Value change
- +$29
- Number of buys
- 1
- Number of sells
- 2
Report period
Q1 2026
Institutions
7
Top holders
7
STRO full security history
Previous quarter: Q4 2025
SUTRO BIOPHARMA, INC. SEC filings
SUTRO BIOPHARMA, INC. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 869367102
Recent filing periods:
Top shareholders 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. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: 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.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| BIOTECHNOLOGY VALUE FUND L P |
13D/G
|
BVF PARTNERS L P/IL |
7.6%
|
1,251,788
|
$13,306,506 | $0 | 10 Feb 2026 | |
| Affinity Asset Advisors, LLC |
13D/G
13F
|
Company |
6.5%
|
1,069,519
|
$26,642,467 | -$137,363,902 | 31 Mar 2026 | |
| Samsara BioCapital, L.P. |
13D/G
|
Srinivas Akkaraju |
6.4%
|
1,062,872
|
$26,476,886 | $0 | 11 Feb 2026 | |
| Kynam Capital Management, LP |
13F
13D/G
|
Company |
5.3%
from 13D/G
|
479,590
|
$5,548,856 | — | 31 Dec 2025 | |
| VANGUARD GROUP INC |
13F
13D/G
|
Company · The Vanguard Group |
4.9%
from 13D/G
|
375,786
|
$4,347,844 | — | 31 Dec 2025 | |
| BlackRock, Inc. |
13D/G
13F
|
Company |
2.5%
|
2,092,281
|
$1,493,679 | -$2,892,242 | 30 Jun 2025 | |
| MILLENNIUM MANAGEMENT LLC |
13D/G
13F
|
Company |
1.3%
|
210,378
|
$5,240,663 | -$112,268,464 | 31 Mar 2026 | |
| Edward C. Albini |
3/4/5
|
CFO AND SECRETARY |
0.97%
|
160,805
|
$141,508 | — | 15 May 2025 | |
| ACADIAN ASSET MANAGEMENT LLC |
13F
|
Company |
2.1%
|
337,953
|
$3,908,000 | — | 31 Dec 2025 | |
| Velan Capital Investment Management LP |
13F
|
Company |
1.9%
|
312,000
|
$3,609,840 | — | 31 Dec 2025 | |
| Merck & Co., Inc. |
13F
|
Company |
1.6%
|
272,351
|
$3,151,101 | — | 31 Dec 2025 | |
| Vestal Point Capital, LP |
13F
|
Company |
1.5%
|
243,000
|
$2,811,510 | — | 31 Dec 2025 | |
| BALYASNY ASSET MANAGEMENT L.P. |
13F
|
Company |
1.4%
|
230,049
|
$2,661,667 | — | 31 Dec 2025 | |
| Samsara BioCapital, LLC |
13F
|
Company |
1.2%
|
204,503
|
$2,366,100 | — | 31 Dec 2025 | |
| ADAGE CAPITAL PARTNERS GP, L.L.C. |
13F
|
Company |
1.2%
|
200,000
|
$2,314,000 | — | 31 Dec 2025 | |
| Eversept Partners, LP |
13F
|
Company |
1.2%
|
193,571
|
$2,239,616 | — | 31 Dec 2025 | |
| Opaleye Management Inc. |
13F
|
Company |
1.2%
|
190,671
|
$2,206,063 | — | 31 Dec 2025 | |
| Point72 Asset Management, L.P. |
13F
|
Company |
1.1%
|
179,088
|
$2,072,048 | — | 31 Dec 2025 | |
| TANG CAPITAL MANAGEMENT LLC |
13F
|
Company |
0.85%
|
139,617
|
$1,615,369 | — | 31 Dec 2025 | |
| RENAISSANCE TECHNOLOGIES LLC |
13F
|
Company |
0.75%
|
122,865
|
$1,421,548 | — | 31 Dec 2025 | |
| GSA CAPITAL PARTNERS LLP |
13F
|
Company |
0.54%
|
89,067
|
$1,031,000 | — | 31 Dec 2025 | |
| MARSHALL WACE, LLP |
13F
|
Company |
0.52%
|
85,615
|
$990,565 | — | 31 Dec 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
0.51%
|
83,979
|
$971,990 | — | 31 Dec 2025 | |
| Spruce Street Capital LP |
13F
|
Company |
0.46%
|
75,594
|
$874,623 | — | 31 Dec 2025 | |
| ACUTA CAPITAL PARTNERS, LLC |
13F
|
Company |
0.41%
|
67,451
|
$780,408 | — | 31 Dec 2025 | |
| ADAR1 Capital Management, LLC |
13F
|
Company |
0.41%
|
67,077
|
$776,081 | — | 31 Dec 2025 | |
| TWO SIGMA INVESTMENTS, LP |
13F
|
Company |
0.28%
|
46,492
|
$537,912 | — | 31 Dec 2025 | |
| Fisher Asset Management, LLC |
13F
|
Company |
0.21%
|
35,305
|
$408,478 | — | 31 Dec 2025 | |
| STATE STREET CORP |
13F
|
Company |
0.21%
|
34,266
|
$396,458 | — | 31 Dec 2025 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
0.19%
|
32,085
|
$371,223 | — | 31 Dec 2025 | |
| Shay Capital LLC |
13F
|
Company |
0.15%
|
24,255
|
$280,630 | — | 31 Dec 2025 | |
| JANE STREET GROUP, LLC |
13F
|
Company |
0.14%
|
22,945
|
$265,473 | — | 31 Dec 2025 | |
| AQR CAPITAL MANAGEMENT LLC |
13F
|
Company |
0.11%
|
18,034
|
$208,654 | — | 31 Dec 2025 | |
| TWO SIGMA ADVISERS, LP |
13F
|
Company |
0.11%
|
17,580
|
$203,401 | — | 31 Dec 2025 | |
| AJU IB Investment Co., Ltd. |
13F
|
Company |
0.11%
|
17,500
|
$202,475 | — | 31 Dec 2025 | |
| Invesco Ltd. |
13F
|
Company |
0.1%
|
16,970
|
$196,343 | — | 31 Dec 2025 | |
| MORGAN STANLEY |
13F
|
Company |
0.1%
|
15,922
|
$184,218 | — | 31 Dec 2025 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
0.1%
|
15,669
|
$181,290 | — | 31 Dec 2025 | |
| RBF Capital, LLC |
13F
|
Company |
0.09%
|
15,272
|
$176,697 | — | 31 Dec 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.09%
|
14,379
|
$166,365 | — | 31 Dec 2025 | |
| OMERS ADMINISTRATION Corp |
13F
|
Company |
0.07%
|
11,023
|
$127,536 | — | 31 Dec 2025 | |
| UBS Group AG |
13F
|
Company |
0.05%
|
7,870
|
$91,056 | — | 31 Dec 2025 | |
| State of Tennessee, Department of Treasury |
13F
|
Company |
0.04%
|
7,400
|
$110,630 | — | 31 Dec 2025 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
0.03%
|
4,212
|
$48,733 | — | 31 Dec 2025 | |
| CWM, LLC |
13F
|
Company |
0.01%
|
1,499
|
$17,000 | — | 31 Dec 2025 | |
| OSAIC HOLDINGS, INC. |
13F
|
Company |
0.01%
|
1,338
|
$15,480 | — | 31 Dec 2025 | |
| FMR LLC |
13F
|
Company |
0.01%
|
1,108
|
$12,820 | — | 31 Dec 2025 | |
| CITIGROUP INC |
13F
|
Company |
0.01%
|
1,043
|
$12,068 | — | 31 Dec 2025 | |
| FNY Investment Advisers, LLC |
13F
|
Company |
0.01%
|
1,000
|
$11,000 | — | 31 Dec 2025 | |
| JPMORGAN CHASE & CO |
13F
|
Company |
0%
|
741
|
$8,573 | — | 31 Dec 2025 |
Institutional Holders of Sutro Biopharma, Inc. - Common Stock, $0.001 par value per share (STRO) as of Q1 2026
As of 31 Mar 2026,
Sutro Biopharma, Inc. - Common Stock, $0.001 par value per share (STRO) was held by
7 institutional
shareholders
that filed Form 13F with the SEC.
Together, they reported ownership of
290,038 shares.
The largest 7 holders included
Merck & Co., Inc., AJU IB Investment Co., Ltd., Fortitude Family Office, LLC, Bogart Wealth, LLC, Parallel Advisors, LLC, EverSource Wealth Advisors, LLC, and Advisory Services Network, LLC.
This page lists
7
institutional shareholders reporting positions in this security
for the Q1 2026 filing period.
| Investor | Option | Weight % | Change % | Value $ | * Price | Shares | Share Change | Activity | Report Period |
|---|
Compare Q1 2026 vs Q4 2025 Across Filers
Q4 2025 holders
7
Q1 2026 holders
7
Holder diff
0
| Investor | Q4 2025 Shares | Q1 2026 Shares | Share Diff | Share Chg % | Q4 2025 Value $ | Q1 2026 Value $ | Value Diff $ | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.
An asterisk sign (*) next to the price indicates that the price is likely invalid.