Foresite Capital Management IV, LLC Diversified Active

Name: Foresite Capital Management IV, LLC Q1 2026 13F Filing | 13F Explorer
Creator: Foresite Capital Management IV, LLC
Published: 2026-05-15

Location: West Hollywood, CA

CIK: 0001704132 · Show all filings

Period: Q1 2026 (← Previous)

Filing Date: May 15, 2026

Total Value: $237M (100.0% shares, 0.0% debt)

Holdings (8)

New Positions (1)

EIKN Eikon Therapeutics, Inc. 8.7%

Value $20.56M Shares 1,943,682 Est. Cost $10.58 Unrealized —

Ticker	Issuer	Shares	Value	%	Est. Cost	Unrealized	Class	CUSIP
EIKN	Eikon Therapeutics, Inc.	1,943,682	$20.56M	8.7%	$10.58	—	COM	282564103

Increased Positions (1)

CYTK CYTOKINETICS INC 14.0%

Value $33.17M (+13.9%) Shares 503,295 (+9.8%) Est. Cost $43.27 Unrealized +48.9%

Ticker	Issuer	Shares	Value	%	Est. Cost	Unrealized	Class	CUSIP
CYTK	CYTOKINETICS INC	503,295 (+9.8%)	$33.17M (+13.9%)	14.0%	$43.27	+48.9%	COM	23282W605

Decreased Positions (1)

MAZE Maze Therapeutics, Inc. 2.0%

Value $4.683M (-78.4%) Shares 156,901 (-70.0%) Est. Cost $12.04 Unrealized +265.8%

Ticker	Issuer	Shares	Value	%	Est. Cost	Unrealized	Class	CUSIP
MAZE	Maze Therapeutics, Inc.	156,901 (-70.0%)	$4.683M (-78.4%)	2.0%	$12.04	+265.8%	COM	578784100

Unchanged Positions (5)

LYEL Lyell Immunopharma, Inc. 6.8%

Value $16.06M Shares 800,399 Est. Cost $9.11 Unrealized +167.0%

PHVS Pharvaris N.V. 56.9%

Value $135M Shares 4,778,581 Est. Cost $26.89 Unrealized -0.6%

ALEC Alector, Inc. 3.5%

Value $8.357M Shares 3,887,200 Est. Cost $1.77 Unrealized +7.5%

XENE Xenon Pharmaceuticals Inc. 3.9%

Value $9.304M Shares 160,000 Est. Cost $32.62 Unrealized +28.7%

RLAY Relay Therapeutics, Inc. 4.2%

Value $9.95M Shares 1,000,000 Est. Cost $7.47 Unrealized +11.1%

Ticker	Issuer	Shares	Value	%	Est. Cost	Unrealized	Class	CUSIP
LYEL	Lyell Immunopharma, Inc.	800,399	$16.06M	6.8%	$9.11	+167.0%	COM	55083R203
PHVS	Pharvaris N.V.	4,778,581	$135M	56.9%	$26.89	-0.6%	COM	N69605108
ALEC	Alector, Inc.	3,887,200	$8.357M	3.5%	$1.77	+7.5%	COM	014442107
XENE	Xenon Pharmaceuticals Inc.	160,000	$9.304M	3.9%	$32.62	+28.7%	COM	98420N105
RLAY	Relay Therapeutics, Inc.	1,000,000	$9.95M	4.2%	$7.47	+11.1%	COM	75943R102