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ARCH Venture Management, LLC

Position in GOSS — Gossamer Bio, Inc.

CIK 1274403 CHICAGO, IL

Position in GOSS

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$1,329,226
-$1,321,170 QoQ
Shares Held
8,055,916
0.0% QoQ
Ownership
1.65%
of shares outstanding
% of Portfolio
0.12%
of 13F equity value
Holder Rank
#12
of 168 holders
Holding Since
Sep 2023
12 quarters on record
Voting authority Sole 0% Shared 0% None 100%

Common Shares in GOSS Over Time

Shares Held

Position Value (USD)

Position in Biotechnology

Healthcare · as of Jun 30, 2026

ARCH Venture Management, LLC holds $1,092,140,745 across 11 Biotechnology names. GOSS ranks #11 (0.1% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in GOSS

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12 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $1,329,226 8,055,916
2026-03-31 $2,650,396 8,055,916
2025-12-31 $24,973,339 8,055,916
2025-09-30 $21,187,059 8,055,916
2025-06-30 $9,908,776 8,055,916
2025-03-31 $8,861,507 8,055,916
2024-12-31 $7,290,603 8,055,916
2024-09-30 $7,943,133 8,055,916
2024-06-30 $7,258,380 8,055,916
2024-03-31 $9,505,980 8,055,916
2023-12-31 $7,355,051 8,055,916
2023-09-30 $6,710,578 8,055,916