First Tracks Biotherapeutics, Inc. (TRAX)
Nasdaq: TRAX · Pharmaceutical Preparations · filing with the SEC since 2026
Who owns First Tracks Biotherapeutics, Inc.
As filed with the SECHolders of 5% or more
6
EcoR1 Capital, LLC holds 9.1% of Comon Stock, as its SCHEDULE 13G filed Apr 22, 2026 says.
Directors and officers
10
report now, of 10 people on the record since 2026. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 6 named at left.
Holders of 5% or moreshare of the class, as filed
EcoR1 Capital, LLC
SCHEDULE 13G · filed Apr 22, 2026 · Comon Stock
Chen Yu
SCHEDULE 13G · filed Aug 14, 2026 · Common Stock, par value $0.001 per share
Blackrock, Inc.
SCHEDULE 13G/A · filed Oct 27, 2026 · Common Stock · 5.5% in Jul 28, 2026
Sirenia Capital Management LP
SCHEDULE 13G · filed Aug 14, 2026 · Common Stock, par value $0.001 per share
Fmr LLC
SCHEDULE 13G · filed Aug 6, 2026 · COMMON STOCK
Affinity Asset Advisors, LLC
SCHEDULE 13G · filed Aug 13, 2026 · Common Stock, par value $0.001 per share
What TRAX reports owning in othersstakes of 5% or more, and other ties
First Tracks Biotherapeutics, Inc. reports no stake in another company in the record.
Insider tradesForm 4
1sales
0purchases
0sales on a scheduled plan
1people selling
$1.8Msold, in dollars
$0bought, in dollars
Open-market trades on Form 4 from Nov 3, 2025 to Nov 3, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2026 runs to Nov 3, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window2 of 12 on the roster
| Person | Role as filed | Sales | Sold | On a plan | Buys | Bought |
|---|---|---|---|---|---|---|
| Ecor1 Capital, LLC | 10% owner | 1 | $65.0M | 0 | 0 | $0 |
| Ware J. Anthony | director | 1 | $1.8M | 0 | 0 | $0 |