| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Affinity Asset Advisors, LLC | 7.8% | $5,717,348 | 6,583,772 | Affinity Healthcare Fund, LP | 16 Oct 2025 | |||
| MILLENNIUM MANAGEMENT LLC | 5.6% | $4,434,182 | 4,717,215 | Millennium Management LLC | 27 Jun 2025 | |||
| VANGUARD GROUP INC | 4.9% | $2,937,877 | 4,115,250 | The Vanguard Group | 30 Jun 2025 | |||
| BlackRock, Inc. | 2.5% | -69% | $1,493,679 | -$2,892,242 | 2,092,281 | -66% | BlackRock, Inc. | 30 Jun 2025 |
As of 31 Dec 2025, 6 institutional investors reported holding 290,035 shares of Sutro Biopharma, Inc. - Common Stock, $0.001 par value (STRO). This represents 0.34% of the company’s total 84,733,230 outstanding shares.
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2025 Q4 | 290,035 | $3,355,706 | -$74,010,433 | $11.57 | 6 |
| 2025 Q3 | 53,391,796 | $46,361,876 | -$1,653,951 | $0.87 | 85 |
| 2025 Q2 | 55,585,121 | $39,680,994 | -$3,651,726 | $0.71 | 100 |
| 2025 Q1 | 61,457,334 | $39,985,859 | -$10,841,219 | $0.65 | 113 |
| 2024 Q4 | 63,895,959 | $117,565,386 | -$7,306,459 | $1.84 | 122 |
| 2024 Q3 | 62,516,525 | $216,373,636 | -$1,660,759 | $3.46 | 130 |
| 2024 Q2 | 63,167,394 | $185,075,042 | +$25,139,079 | $2.93 | 119 |
| 2024 Q1 | 53,412,221 | $301,719,025 | +$2,094,339 | $5.65 | 116 |
| 2023 Q4 | 55,648,249 | $238,729,642 | -$219,480 | $4.29 | 113 |
| 2023 Q3 | 55,996,442 | $194,308,615 | +$5,622,550 | $3.47 | 108 |
| 2023 Q2 | 54,105,078 | $251,585,717 | +$2,181,872 | $4.65 | 119 |
| 2023 Q1 | 53,720,779 | $247,499,715 | +$10,470,599 | $4.62 | 114 |
| 2022 Q4 | 49,984,035 | $403,859,817 | +$6,296,600 | $8.08 | 116 |
| 2022 Q3 | 50,396,383 | $279,697,401 | +$23,514,794 | $5.55 | 111 |
| 2022 Q2 | 46,245,672 | $240,931,373 | +$15,713,924 | $5.21 | 111 |
| 2022 Q1 | 41,606,389 | $341,990,813 | -$38,514,469 | $8.22 | 111 |
| 2021 Q4 | 39,677,298 | $590,411,817 | -$4,363,219 | $14.88 | 114 |
| 2021 Q3 | 39,817,120 | $752,214,523 | -$26,368,206 | $18.89 | 119 |
| 2021 Q2 | 41,241,047 | $766,657,023 | -$71,886,996 | $18.59 | 121 |
| 2021 Q1 | 44,209,991 | $1,005,487,689 | +$114,863,310 | $22.76 | 136 |
| 2020 Q4 | 39,392,744 | $855,224,796 | +$184,675,658 | $21.71 | 132 |
| 2020 Q3 | 31,151,440 | $313,088,624 | +$67,545,691 | $10.05 | 87 |
| 2020 Q2 | 23,997,579 | $186,238,799 | +$97,614,730 | $7.76 | 76 |
| 2020 Q1 | 11,868,607 | $116,270,683 | +$7,872,102 | $10.20 | 60 |
| 2019 Q4 | 11,616,437 | $127,772,633 | +$7,088,075 | $11.00 | 64 |
| 2019 Q3 | 11,074,608 | $91,621,057 | -$8,301,817 | $9.09 | 59 |
| 2019 Q2 | 11,817,484 | $122,739,770 | +$6,666,665 | $11.38 | 58 |
| 2019 Q1 | 11,231,778 | $116,185,606 | +$4,727,906 | $11.39 | 49 |
| 2018 Q4 | 9,707,399 | $87,234,000 | -$10,616,486 | $9.02 | 41 |
| 2018 Q3 | 9,086,875 | $135,767,000 | +$129,306,000 | $15.00 | 32 |