35 managers (35 13F filers) reported a position in SRZN shares at 2025-09-30, 4,842,546 shares in all. 9 filers opened a position and 4 filers sold out during the quarter.
Managers
35
13F filers
35
New
9
Added
6
Reduced
3
Sold out
4
Shares held by filers
4,842,546
Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.
13D and 13G filers
Each filer's latest stake. The shares are the aggregate the reporting persons state, which can include entities that file no 13F.
No Form 4 transaction on this security in the data.
13F holders, Q3 2025
Filers in the available 13F reports with a share position at 2025-09-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.
Boxer Capital Management, LLC and 3 other reporting persons reported 1,360,683 SRZN shares, 11.6% of the class, as of 2026-09-30, in a 13G/A filed 2026-10-07. 0001213900-26-107661
Accepted , ingested
Commodore Capital LP and 3 other reporting persons reported 885,000 SRZN shares, 7.5% of the class, as of 2026-09-24, in a 13G filed 2026-10-01. 0001831942-26-000044