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

13F Institutional Holders and Ownership History for Q4 2025

Type / Class
Equity / Common Stock, $0.001 par value
Symbol
STRO on Nasdaq
Shares outstanding
16,470,895
Price per share
$10.63
All holders as of 31 Dec 2025
Q4 2025
Total 13F shares
5,308,429
Total reported value
$61,441,352
% of total 13F portfolios
0%
Share change
+5,232,724
Value change
+$60,565,445
Number of holders
54
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of SUTRO BIOPHARMA, INC. - Common Stock, $0.001 par value (STRO) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
BIOTECHNOLOGY VALUE FUND L P 7.6% $13,306,506 1,251,788 BVF PARTNERS L P/IL 10 Feb 2026
Affinity Asset Advisors, LLC 8.8% $8,444,817 748,382 Affinity Asset Advisors, LLC 22 Jan 2026

As of 31 Dec 2025, 54 institutional investors reported holding 5,308,429 shares of SUTRO BIOPHARMA, INC. - Common Stock, $0.001 par value (STRO). This represents 32% of the company’s total 16,470,895 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of SUTRO BIOPHARMA, INC. - Common Stock, $0.001 par value (STRO) together control 31% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
Affinity Asset Advisors, LLC 4.5% 748,382 0.62% $8,658,780
Kynam Capital Management, LP 2.9% 479,590 0.36% $5,548,856
MILLENNIUM MANAGEMENT LLC 2.5% 418,196 0% $4,838,528
VANGUARD GROUP INC 2.3% 375,786 0% $4,347,844
ACADIAN ASSET MANAGEMENT LLC 2.1% 337,953 0.01% $3,908,000
Velan Capital Investment Management LP 1.9% 312,000 2.1% $3,609,840
Vestal Point Capital, LP 1.5% 243,000 0.1% $2,811,510
Balyasny Asset Management L.P. 1.4% 230,049 0% $2,661,667
SAMSARA BIOCAPITAL, LLC 1.2% 204,503 0.24% $2,366,100
ADAGE CAPITAL PARTNERS GP, L.L.C. 1.2% 200,000 0% $2,314,000
Eversept Partners, LP 1.2% 193,571 0.13% $2,239,616
Opaleye Management Inc. 1.2% 190,671 0.29% $2,206,063
Point72 Asset Management, L.P. 1.1% 179,088 0% $2,072,048
TANG CAPITAL MANAGEMENT LLC 0.85% 139,617 0.08% $1,615,369
RENAISSANCE TECHNOLOGIES LLC 0.75% 122,865 0% $1,421,548
BlackRock, Inc. 0.71% 117,437 0% $1,358,746
GSA CAPITAL PARTNERS LLP 0.54% 89,067 0.09% $1,031,000
MARSHALL WACE, LLP 0.52% 85,615 0% $990,565
GEODE CAPITAL MANAGEMENT, LLC 0.51% 83,979 0% $971,990
Spruce Street Capital LP 0.46% 75,594 0% 0.29% $874,623
ACUTA CAPITAL PARTNERS, LLC 0.41% 67,451 0.53% $780,408
ADAR1 Capital Management, LLC 0.41% 67,077 0.06% $776,081
TWO SIGMA INVESTMENTS, LP 0.28% 46,492 0% $537,912
Fisher Asset Management, LLC 0.21% 35,305 0% $408,478
STATE STREET CORP 0.21% 34,266 0% $396,458

Institutional Holders of SUTRO BIOPHARMA, INC. - Common Stock, $0.001 par value (STRO) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q4 5,308,429 $61,441,352 +$60,565,445 $11.57 54