Security key
869367102
Sutro Biopharma, Inc. - Common Stock, $0.001 par value per share (STRO)
CUSIP: 869367102
Q4 2020 13F Holders as of 31 Dec 2020
- Security type / class
- Equity / Common Stock, $0.001 par value per share
- Total 13F shares
- 39,392,744
- Total 13F value
- $855,224,796
- Share change
- +8,003,533
- Put/Call ratio
- 60%
- SEC-reported price per share
- $21.71
- Number of holders
- 132
- Value change
- +$184,675,658
- Number of buys
- 99
- Number of sells
- 30
- Shares outstanding
- 16,607,375
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q4 2020
Institutions
132
Top holders
10
STRO full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q1 2021
Previous quarter: Q3 2020
SUTRO BIOPHARMA, INC. SEC filings
SUTRO BIOPHARMA, INC. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 869367102
Recent filing periods:
Ownership snapshot
Top reported holders of STRO - Sutro Biopharma, Inc. - Common Stock, $0.001 par value per share (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
EcoR1 Capital, LLC
Disclosed value leader
EcoR1 Capital, LLC
Comparable rows
15/15
Latest evidence
30 Sep 2020
13F
Lead comparable stake: 19%
Showing 1-6 of 15 holder rows.
Quick read
EcoR1 Capital, LLC leads the comparable SEC ownership view at 19%.
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 EcoR1 Capital, LLC's linked filing trail.
Comparable ownership
Top 5
EcoR1 Capital, LLC
19%
BVF INC/IL
19%
RA CAPITAL MANAGEMENT, L.P.
13%
BlackRock Finance, Inc.
12%
EVENTIDE ASSET MANAGEMENT, LLC
12%
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 |
|---|---|---|---|---|---|
| EcoR1 Capital, LLC |
13F
Company
|
19%
|
$31,292,000
3,113,617 shares
|
— | 30 Sep 2020 |
| BVF INC/IL |
13F
Company
|
19%
|
$31,026,000
3,087,195 shares
|
— | 30 Sep 2020 |
| RA CAPITAL MANAGEMENT, L.P. |
13F
Company
|
13%
|
$21,288,000
2,118,212 shares
|
— | 30 Sep 2020 |
| BlackRock Finance, Inc. |
13F
Company
|
12%
|
$20,579,000
2,047,563 shares
|
— | 30 Sep 2020 |
| EVENTIDE ASSET MANAGEMENT, LLC |
13F
Company
|
12%
|
$19,959,000
1,985,975 shares
|
— | 30 Sep 2020 |
| SV Health Investors, LLC |
13F
Company
|
11%
|
$18,337,000
1,824,542 shares
|
— | 30 Sep 2020 |
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 2020
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
132
Shares
39,392,744
Rows available
132
| 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 2020 vs Q3 2020 Across Filers
Q3 2020 holders
87
Q4 2020 holders
132
Holder diff
45
| Investor | Q3 2020 Shares | Q4 2020 Shares | Share Diff | Share Chg % | Q3 2020 value | Q4 2020 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend