Security key
869367102
Sutro Biopharma, Inc. - Common Stock, $0.001 par value per share (STRO)
CUSIP: 869367102
Q4 2023 13F Holders as of 31 Dec 2023
- Security type / class
- Equity / Common Stock, $0.001 par value per share
- Total 13F shares
- 55,648,249
- Total 13F value
- $238,729,642
- Share change
- -706,730
- Put/Call ratio
- 65%
- SEC-reported price per share
- $4.29
- Number of holders
- 113
- Value change
- -$219,480
- Number of buys
- 60
- Number of sells
- 43
- 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 2023
Institutions
113
Top holders
10
STRO full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q1 2024
Previous quarter: Q3 2023
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
BlackRock Finance, Inc.
Disclosed value leader
BlackRock Finance, Inc.
Comparable rows
15/15
Latest evidence
30 Sep 2023
13F
Lead comparable stake: 36%
Showing 1-6 of 15 holder rows.
Quick read
BlackRock Finance, Inc. leads the comparable SEC ownership view at 36%.
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 BlackRock Finance, Inc.'s linked filing trail.
Comparable ownership
Top 5
BlackRock Finance, Inc.
36%
SUVRETTA CAPITAL MANAGEMENT, LLC
35%
BVF INC/IL
20%
Rubric Capital Management LP
20%
ADAGE CAPITAL PARTNERS GP, L.L.C.
19%
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 |
|---|---|---|---|---|---|
| BlackRock Finance, Inc. |
13F
Company
|
36%
|
$20,773,501
5,986,600 shares
|
— | 30 Sep 2023 |
| SUVRETTA CAPITAL MANAGEMENT, LLC |
13F
Company
|
35%
|
$20,416,415
5,883,693 shares
|
— | 30 Sep 2023 |
| BVF INC/IL |
13F
Company
|
20%
|
$11,617,373
3,347,946 shares
|
— | 30 Sep 2023 |
| Rubric Capital Management LP |
13F
Company
|
20%
|
$11,606,491
3,344,810 shares
|
— | 30 Sep 2023 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. |
13F
Company
|
19%
|
$10,774,808
3,105,132 shares
|
— | 30 Sep 2023 |
| VANGUARD GROUP INC |
13F
Company
|
17%
|
$9,954,604
2,868,762 shares
|
— | 30 Sep 2023 |
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 2023
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
113
Shares
55,648,249
Rows available
113
| 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 2023 vs Q3 2023 Across Filers
Q3 2023 holders
108
Q4 2023 holders
113
Holder diff
5
| Investor | Q3 2023 Shares | Q4 2023 Shares | Share Diff | Share Chg % | Q3 2023 value | Q4 2023 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend