Security key
869367201
SUTRO BIOPHARMA, INC. - Common Stock, $0.001 par value (STRO)
CUSIP: 869367201
Q4 2025 13F Holders as of 31 Dec 2025
- Security type / class
- Equity / Common Stock, $0.001 par value
- Total 13F shares
- 5,308,429
- Total 13F value
- $61,441,352
- Share change
- +5,232,724
- SEC-reported price per share
- $11.57
- Number of holders
- 54
- Value change
- +$60,565,445
- Number of buys
- 52
- Shares outstanding
- 16,470,895
Holder snapshot
5 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q4 2025
Institutions
54
Top holders
10
STRO full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q1 2026
SUTRO BIOPHARMA, INC. SEC filings
SUTRO BIOPHARMA, INC. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 869367201
Recent filing periods:
Ownership snapshot
Top reported holders of STRO - SUTRO BIOPHARMA, INC. - Common Stock, $0.001 par value (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
VANGUARD GROUP INC
Disclosed value leader
SUVRETTA CAPITAL MANAGEME...
Comparable rows
15/15
Latest evidence
30 Sep 2025
13F
13D/G
3/4/5
Lead comparable stake: 4.9%
13D/G row: VANGUARD GROUP INC
Showing 1-6 of 15 holder rows.
Quick read
VANGUARD GROUP INC leads the comparable SEC ownership view at 4.9%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens VANGUARD GROUP INC's linked filing trail.
Comparable ownership
Top 5
VANGUARD GROUP INC
4.9%
BlackRock, Inc.
2.5%
Edward C. Albini
0.97%
SUVRETTA CAPITAL MANAGEMENT, LLC
39%
Kynam Capital Management, LP
31%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| VANGUARD GROUP INC |
13F
13D/G
Company · The Vanguard Group
|
4.9%
from 13D/G
|
$3,196,832
3,682,986 shares
|
— | 30 Sep 2025 |
| BlackRock, Inc. |
13D/G
13F
Company
|
2.5%
|
$1,493,679
2,092,281 shares
|
-$2,892,242 | 30 Jun 2025 |
| Edward C. Albini |
3/4/5
CFO AND SECRETARY
|
0.97%
|
$141,508
160,805 shares
|
— | 15 May 2025 |
| SUVRETTA CAPITAL MANAGEMENT, LLC |
13F
Company
|
39%
|
$5,634,461
6,488,324 shares
|
— | 30 Sep 2025 |
| Kynam Capital Management, LP |
13F
Company
|
31%
|
$4,418,505
5,088,099 shares
|
— | 30 Sep 2025 |
| MILLENNIUM MANAGEMENT LLC |
13F
Company
|
27%
|
$3,928,946
4,524,350 shares
|
— | 30 Sep 2025 |
How to read this table
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.
13F holder rows
Institutional holders as of Q4 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
54
Shares
5,308,429
Rows available
54
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q4 2025 vs Q4 2025 Across Filers
Q4 2025 holders
54
Q4 2025 holders
54
Holder diff
0
| Investor | Q4 2025 Shares | Q4 2025 Shares | Share Diff | Share Chg % | Q4 2025 value | Q4 2025 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend