TOURMALINE BIO INC

2 institutions still hold TOURMALINE BIO INC as of Q3 2025. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 89157d105·2 13F holders·last filed Sep 30, 2025

Market cap

—

▲ 8.7%

vs prior quarter

13F value held

$35M

50.0% inst. owned

of float

Holders

+35 QoQ

filers reporting

Activity

+70 / −58

+876 added · −760 reduced

this quarter

Concentration

100.00%

Qiming U.S. Ventures Management, LLC #1

top holder share

AI Holders Summary · Q3 2025

2 institutions reported TRML in Q3 2025. Qiming U.S. Ventures Management, LLC leads at 100.0% of the visible book. +35 net new institutions vs prior quarter — accumulation reading.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter

Qiming U.S. Ventures Management, LLC

CIK 0001909617

$35M742K63.76%Q3 2025 02

CONCOURSE FINANCIAL GROUP SECURITIES, INC.

CIK 0000752798

$00—Q2 2025