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SUTRO BIOPHARMA (STRO)
NASDAQ
$27.05+$2.62 (+10.70%)
Price as of Jun 03, 2026 6:41 PM EDT- $484.4MMarket Cap
- 167.49%1-Year Change
- BiotechnologyIndustry
SUTRO BIOPHARMA (STRO)
$27.05+$2.62 (+10.70%)
Top Holders
Institutional
Mutual Funds
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
BLACKROCK FUNDING, INC. /DE | 89.35% | 7.6M | +577,072 (+7.60%) | Dec 31, 2024 |
BLACKROCK INC. | 81.32% | 6.9M | +1.2M (+17.49%) | Jun 30, 2024 |
SUVRETTA CAPITAL MANAGEMENT, LLC | 76.35% | 6.5M | 0 (0.00%) | Sep 30, 2025 |
SV HEALTH INVESTORS, LLC | 21.47% | 1.8M | 0 (0.00%) | Dec 31, 2021 |
FRAZIER MANAGEMENT LLC | 20.91% | 1.8M | +307,816 (+17.33%) | Dec 31, 2021 |
FIRST LIGHT ASSET MANAGEMENT, LLC | 19.68% | 1.7M | -574,091 (-34.33%) | Mar 31, 2022 |
NUVEEN ASSET MANAGEMENT, LLC | 15.58% | 1.3M | +124,154 (+9.38%) | Dec 31, 2024 |
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
VANGUARD INDEX FUNDS | 37.41% | 3.2M | 0 (0.00%) | Mar 31, 2026 |
MUTUAL FUND SERIES TRUST | 31.88% | 2.7M | 0 (0.00%) | Mar 31, 2026 |
SPDR SERIES TRUST | 23.53% | 2.0M | 0 (0.00%) | Jan 31, 2026 |
FRANKLIN STRATEGIC SERIES | 18.04% | 1.5M | 0 (0.00%) | Jan 31, 2026 |
FIDELITY SALEM STREET TRUST | 10.31% | 875,865 | 0 (0.00%) | Mar 31, 2026 |
LOOMIS SAYLES FUNDS II | 7.88% | 669,530 | 0 (0.00%) | Mar 31, 2026 |
FIDELITY CONCORD STREET TRUST | 7.86% | 667,645 | 0 (0.00%) | Feb 28, 2026 |
Current Ownership Distribution
- Institutions902.2M (83.27%)
- Mutual Funds172.1M (15.89%)
- Insiders9.1M (0.84%)
- Other0 (0.00%)
Insider Transactions
- 0.84% (9.1M)Current InsiderOwnership (%, shares)
- 1Number of InsiderBuying (last 12 months)
- $43,887.53Amount of InsiderBuying (last 12 months)
- 0Number of InsiderSelling (last 12 months)
- $0.00Amount of InsiderSelling (last 12 months)
Insider Name & Title | Type | Date
| Transaction Value | Shares | Share Price | Shares After Transactions |
|---|---|---|---|---|---|---|
Chow Gregory K. CFO | Exempt | Jun 02, 2026 | $0.00 | 2,500 | $0.00 | 7,500 |
Chow Gregory K. CFO | Exempt | Jun 02, 2026 | $0.00 | 2,500 | $0.00 | 4,725 |
Pauling David Chief Admin. Ofcr. & GC | Exempt | Mar 04, 2026 | $0.00 | 675 | $0.00 | 0 |
Pauling David Chief Admin. Ofcr. & GC | Exempt | Mar 04, 2026 | $0.00 | 675 | $0.00 | 10,025 |
Pauling David Chief Admin. Ofcr. & GC | In Kind | Mar 04, 2026 | $5,902.87 | 277 | $21.31 | 9,748 |
Chow Gregory K. CFO | Award | Mar 02, 2026 | $0.00 | 40,000 | $0.00 | 40,000 |
Gerber Hans-Peter CHIEF SCIENTIFIC OFFICER | Exempt | Mar 02, 2026 | $0.00 | 2,843 | $0.00 | 8,532 |
Chung Jane Chief Executive Officer | Exempt | Mar 02, 2026 | $0.00 | 7,750 | $0.00 | 23,250 |
Gerber Hans-Peter CHIEF SCIENTIFIC OFFICER | Award | Mar 02, 2026 | $0.00 | 5,000 | $0.00 | 5,000 |
Chow Gregory K. CFO | Award | Mar 02, 2026 | $0.00 | 5,000 | $0.00 | 5,000 |
Gerber Hans-Peter CHIEF SCIENTIFIC OFFICER | Award | Mar 02, 2026 | $0.00 | 40,000 | $0.00 | 40,000 |
Chung Jane Chief Executive Officer | Award | Mar 02, 2026 | $0.00 | 40,000 | $0.00 | 40,000 |
Gerber Hans-Peter CHIEF SCIENTIFIC OFFICER | Exempt | Mar 02, 2026 | $0.00 | 2,843 | $0.00 | 10,688 |
Chung Jane Chief Executive Officer | Award | Mar 02, 2026 | $0.00 | 175,000 | $0.00 | 175,000 |
Gerber Hans-Peter CHIEF SCIENTIFIC OFFICER | In Kind | Mar 02, 2026 | $24,043.50 | 1,170 | $20.55 | 9,518 |
Chung Jane Chief Executive Officer | Exempt | Mar 02, 2026 | $0.00 | 7,750 | $0.00 | 23,558 |
Chung Jane Chief Executive Officer | In Kind | Mar 02, 2026 | $57,108.45 | 2,779 | $20.55 | 20,779 |
Gerber Hans-Peter CHIEF SCIENTIFIC OFFICER | Exempt | Mar 01, 2026 | $0.00 | 1,125 | $0.00 | 8,308 |
Chung Jane Chief Executive Officer | Exempt | Mar 01, 2026 | $0.00 | 688 | $0.00 | 688 |
Gerber Hans-Peter CHIEF SCIENTIFIC OFFICER | In Kind | Mar 01, 2026 | $9,477.61 | 463 | $20.47 | 7,845 |
Chung Jane Chief Executive Officer | Exempt | Mar 01, 2026 | $0.00 | 2,500 | $0.00 | 5,000 |
Gerber Hans-Peter CHIEF SCIENTIFIC OFFICER | Exempt | Mar 01, 2026 | $0.00 | 1,125 | $0.00 | 2,250 |
Chung Jane Chief Executive Officer | Exempt | Mar 01, 2026 | $0.00 | 688 | $0.00 | 14,579 |
Chung Jane Chief Executive Officer | Exempt | Mar 01, 2026 | $0.00 | 2,500 | $0.00 | 17,079 |
Chung Jane Chief Executive Officer | In Kind | Mar 01, 2026 | $26,017.37 | 1,271 | $20.47 | 15,808 |
Wigginton Jon Marc | Award | Dec 23, 2025 | $0.00 | 1,500 | $0.00 | 1,500 |
Gerber Hans-Peter CHIEF SCIENTIFIC OFFICER | Award | Dec 23, 2025 | $0.00 | 7,925 | $0.00 | 7,925 |
Dybbs Michael | Award | Dec 23, 2025 | $0.00 | 1,500 | $0.00 | 1,500 |
Pauling David Chief Admin. Ofcr. & GC | Award | Dec 23, 2025 | $0.00 | 7,200 | $0.00 | 7,200 |
Hunter Heidi | Award | Dec 23, 2025 | $0.00 | 1,500 | $0.00 | 1,500 |