ARCH Venture Partners XIII, LLC

SEC CIK: 0002016082

SEC filings (opens in a new tab)

In the past year, 1 open-market purchase filing worth $12.5M and no sales.

Current role at each company

KARD Kardigan, Inc.Director, 10% Owneras of Jun 24, 2026
LYEL Lyell Immunopharma, Inc.10% Owneras of Mar 9, 2026
MTSR Metsera, Inc.Director, 10% Owneras of Nov 14, 2025

Open-market trades in the past year

Open-market purchases (P) and sales (S) filed in the last 365 days, not counting derivative securities or duplicate filings. Values leave out price outliers.

Bought: $12.5M; 1 filing
Sold: –; 0 filings
Net: +$12.5M; Bought minus sold
Companies: 1; With open-market trades

Trades

Every Form 4 that lists ARCH Venture Partners XIII, LLC as a reporting owner, including filings made jointly with others, grouped by company. Each row adds up one type of transaction in one filing. Only open-market purchases (P) and sales (S) are shown by default.

Transaction type

Role

Minimum value (USD)

Filed from

Filed to

Filing delay at least (days)

Filing delay at most (days)

KARD Kardigan, Inc.

Director, 10% Owner1 trade

Insider trades
Filed (ET)	Trade date	Filing delay	Insider	Transaction	Shares	Avg price	Value	Holding change	Flags
Jun 24, 2026 (view filing)4:18 PM ET	Jun 22	2 days	Crandell Keith and 6 othersDirector, 10% Owner	PPurchase	+1.25M	$16.00	+$20.0M	+9.1%15.0M after	Duplicate filing

LYEL Lyell Immunopharma, Inc.

10% Owner1 trade

Insider trades
Filed (ET)	Trade date	Filing delay	Insider	Transaction	Shares	Avg price	Value	Holding change	Flags
Mar 9, 2026 (view filing)4:34 PM ET	Mar 6	3 days	Berns Paul L and 8 others10% Owner	PPurchase	+488.1K	$25.61	+$12.5M	+52.0%1.43M after

MTSR Metsera, Inc.