Security key
95075A107
Werewolf Therapeutics, Inc. - Common Stock, $0.0001 par value per share (HOWL)
CUSIP: 95075A107
Q3 2021 13F Holders as of 30 Sep 2021
- Security type / class
- Equity / Common Stock, $0.0001 par value per share
- Total 13F shares
- 18,418,726
- Total 13F value
- $316,117,290
- Share change
- -750,453
- SEC-reported price per share
- $17.16
- Number of holders
- 41
- Value change
- -$12,884,754
- Number of buys
- 17
- Number of sells
- 17
- Shares outstanding
- 48,427,829
Holder snapshot
6 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q3 2021
Institutions
41
Top holders
10
HOWL full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q4 2021
Previous quarter: Q2 2021
Werewolf Therapeutics, Inc. SEC filings
Werewolf Therapeutics, Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 95075A107
Recent filing periods:
Ownership snapshot
Top reported holders of HOWL - Werewolf Therapeutics, Inc. - Common Stock, $0.0001 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
RA CAPITAL MANAGEMENT, L.P.
Disclosed value leader
RA CAPITAL MANAGEMENT, L.P.
Comparable rows
15/15
Latest evidence
30 Jun 2021
13F
Lead comparable stake: 8.9%
Showing 1-6 of 15 holder rows.
Quick read
RA CAPITAL MANAGEMENT, L.P. leads the comparable SEC ownership view at 8.9%.
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 RA CAPITAL MANAGEMENT, L.P.'s linked filing trail.
Comparable ownership
Top 5
RA CAPITAL MANAGEMENT, L.P.
8.9%
MPM ASSET MANAGEMENT LLC
8.8%
DEERFIELD MANAGEMENT COMPANY, L.P.
5.3%
MPM BioImpact LLC
4.9%
ADAGE CAPITAL PARTNERS GP, L.L.C.
2.1%
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 |
|---|---|---|---|---|---|
| RA CAPITAL MANAGEMENT, L.P. |
13F
Company
|
8.9%
|
$74,850,000
4,291,881 shares
|
— | 30 Jun 2021 |
| MPM ASSET MANAGEMENT LLC |
13F
Company
|
8.8%
|
$74,716,000
4,284,172 shares
|
— | 30 Jun 2021 |
| DEERFIELD MANAGEMENT COMPANY, L.P. |
13F
Company
|
5.3%
|
$44,521,000
2,552,787 shares
|
— | 30 Jun 2021 |
| MPM BioImpact LLC |
13F
Company
|
4.9%
|
$41,647,000
2,388,011 shares
|
— | 30 Jun 2021 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. |
13F
Company
|
2.1%
|
$17,450,000
1,000,597 shares
|
— | 30 Jun 2021 |
| SPHERA FUNDS MANAGEMENT LTD. |
13F
Company
|
1.5%
|
$12,049,000
706,294 shares
|
— | 30 Jun 2021 |
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 Q3 2021
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
41
Shares
18,418,726
Rows available
41
| 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 Q3 2021 vs Q2 2021 Across Filers
Q2 2021 holders
44
Q3 2021 holders
41
Holder diff
-3
| Investor | Q2 2021 Shares | Q3 2021 Shares | Share Diff | Share Chg % | Q2 2021 value | Q3 2021 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend