Companies / Sutro Biopharma, Inc.
Sutro Biopharma, Inc.
Financials · FY2025
Ownership
16.6M shares outstanding · as of Aug 7, 2026
Ownership
| Insiders | 0.21% | 35,528 |
| 10%+ / strategic | 5.26% | 872,558 |
| Institutions | 61.46% | 10,191,380 |
| Public float | 33.06% | 5,481,705 |
% of common shares outstanding (exact, from the latest cover-page filing). Institutions are quarterly 13F snapshots; insiders reflect current officers & directors.
Insiders 12
View all →| Insider | % of shares | Shares |
|---|---|---|
Chung JaneCEOChief Executive Officer · Director | 0.13% | 21,285 |
Pauling DavidFormerChief Admin. Ofcr. & GC | 0.06% | 9,748 |
Gerber Hans-PeterCHIEF SCIENTIFIC OFFICER | 0.06% | 9,518 |
| 0.03% | 4,725 | |
Dybbs MichaelDirector | — | — |
Hunter HeidiDirector | — | — |
Jagpal SukhiDirector | — | — |
Lobacki Joseph MDirector | — | — |
Matsui ConnieDirector | — | — |
Panek James PDirector | — | — |
Institutional holders 74
View all →| Holder | Value | % of shares |
|---|---|---|
| $37.27M | 6.77% | |
| $31.18M | 7.55% | |
| $19.96M | 4.83% | |
| $17.82M | 4.31% | |
| $17.82M | 4.31% | |
| $11.60M | 2.81% | |
| $10.16M | 1.85% | |
| $9.04M | 1.64% | |
| $8.66M | 4.51% | |
| $5.55M | 2.89% |
Activity
InsidersInstitutions
What insiders are doing in this stock (Form 4).| Date | Actor | Action | Security | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|---|
| Mar 2, 2026 | Chung Jane CEO | Other | Common Stock | $57.1K | -3K -11.80% | 20,779 0.13% of shares | low |
| Mar 1, 2026 | Chung Jane CEO | Other | Common Stock | $26.0K | -1K -7.44% | 15,808 0.10% of shares | low |
| Mar 2, 2026 | Gerber Hans-Peter Executive | Other | Common Stock | $24.0K | -1K -10.95% | 9,518 0.06% of shares | low |
| Mar 2, 2026 | Pauling David Executive | Other | Common Stock | $19.9K | -970 -9.40% | 9,350 0.06% of shares | low |
| Mar 1, 2026 | Pauling David Executive | Other | Common Stock | $11.3K | -551 -6.47% | 7,964 0.05% of shares | low |
| Mar 1, 2026 | Gerber Hans-Peter Executive | Other | Common Stock | $9.5K | -463 -5.57% | 7,845 0.05% of shares | low |
| Mar 4, 2026 | Chung Jane CEO | Other | Common Stock | $6.0K | -282 -1.31% | 21,285 0.13% of shares | low |
| Mar 4, 2026 | Pauling David Executive | Other | Common Stock | $5.9K | -277 -2.76% | 9,748 0.06% of shares | low |
5%+ ownership events
Schedule 13D / 13G
| Filer | Stance | % of class |
|---|---|---|
| Affinity Asset Advisors, LLC | Passive13G/A | — |
| Suvretta Capital Management, LLC | Passive13G/A | — |
| Suvretta Capital Management, LLC | Passive13G/A | — |
| Biotechnology Value Fund L P | Passive13G | — |
| Perceptive Advisors LLC | Passive13G | — |
| Millennium Management LLC | Passive13G/A | — |
| Affinity Asset Advisors, LLC | Passive13G/A | — |
| Kynam Capital Management, LP | Passive13G/A | — |
Securities
via CUSIP / OpenFIGI
| Symbol | Type | CUSIP |
|---|---|---|
| STRO | — | 869367102 |
| STRO | — | 869367201 |