TRV GP VI, LLC

Position in SPTX — Seaport Therapeutics, Inc.

CIK 1990716 Boston, MA

Position in SPTX

as of Jun 30, 2026 · filed Aug 10, 2026 Compact

Position Value

$44,769,741

New position

Shares Held

2,061,222

first reported quarter

Ownership

3.85%

of shares outstanding

% of Portfolio

19.27%

of 13F equity value

Holder Rank

#5

of 54 holders

Holding Since

Jun 2026

1 quarter on record

Voting authority Sole 100% Shared 0% None 0%

Healthcare · as of Jun 30, 2026

TRV GP VI, LLC holds $232,275,393 across 4 Biotechnology names. SPTX ranks #2 (19.3% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	SEPN	Septerna, Inc.	4,211,659	$141,048,459
2	SPTX	Seaport Therapeutics, Inc. This page	2,061,222	$44,769,741
3	RAPP	Rapport Therapeutics, Inc.	969,218	$40,387,314
4	TNGX	Tango Therapeutics, Inc.	194,174	$6,069,879

1 filing row on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$44,769,741	2,061,222	—	Shares	Sole	2026-08-10
No filing history on record for this holder in this stock.