Atlas Venture Life Science Advisors, LLC Long-Term Concentrated

Name: Atlas Venture Life Science Advisors, LLC Q1 2023 13F Filing | 13F Explorer
Creator: Atlas Venture Life Science Advisors, LLC
Published: 2023-05-15

Location: Cambridge, MA

CIK: 0001917529 · Show all filings

Period: Q1 2023 (← Previous) (Next →)

Filing Date: May 15, 2023

Total Value: $739M (100.0% shares, 0.0% debt)

Holdings (16)

KYMR Kymera Therapeutics, Inc. 23.5%

Value $174M Shares 5,858,262 Est. Cost $58.25 Unrealized -44.6%

DYN Dyne Therapeutics, Inc. 15.4%

Value $114M Shares 9,885,449 Est. Cost $13.82 Unrealized -6.0%

DAWN Day One Biopharmaceuticals, Inc. 13.8%

Value $102M Shares 7,608,394 Est. Cost $19.68 Unrealized -0.7%

IRON Disc Medicine, Inc. 9.9%

Value $73.36M Shares 3,461,784 Est. Cost $49.79 Unrealized -55.3%

— Vigil Neuroscience, Inc. 7.7%

Value $57.14M Shares 5,836,874 Est. Cost $7.03 Unrealized —

— Third Harmonic Bio, Inc. 6.1%

Value $44.94M Shares 10,907,859 Est. Cost $18.97 Unrealized —

— Aerovate Therapeutics, Inc. 5.6%

Value $41.13M Shares 2,039,249 Est. Cost $11.88 Unrealized —

REPL Replimune Group, Inc. 5.0%

Value $37.06M Shares 2,098,300 Est. Cost $29.91 Unrealized -20.5%

— Generation Bio, Co. 4.8%

Value $35.6M Shares 8,279,484 Est. Cost $7.08 Unrealized —

— Akero Therapeutics, Inc. 3.1%

Value $22.74M Shares 594,251 Est. Cost $21.15 Unrealized —

— Ikena Oncology, Inc. 2.3%

Value $17.31M Shares 5,018,178 Est. Cost $12.54 Unrealized —

XLO Xilio Therapeutics, Inc. 1.2%

Value $8.747M Shares 2,759,344 Est. Cost $17.03 Unrealized -81.6%

— AvroBio, Inc. 0.6%

Value $4.541M Shares 4,541,381 Est. Cost $3.85 Unrealized —

— Magenta Therapeutics, Inc. 0.4%

Value $3.013M Shares 3,791,698 Est. Cost $4.13 Unrealized —

VRDN Viridian Therapeutics, Inc. 0.3%

Value $2.291M Shares 90,072 Est. Cost $18.63 Unrealized +72.1%

SPRO Spero Therapeutics, Inc. 0.2%

Value $1.495M Shares 1,031,160 Est. Cost $15.88 Unrealized -89.5%

Ticker	Issuer	Shares	Value	%	Est. Cost	Unrealized	Class	CUSIP
KYMR	Kymera Therapeutics, Inc.	5,858,262	$174M	23.5%	$58.25	-44.6%	Common Stock	501575104
DYN	Dyne Therapeutics, Inc.	9,885,449	$114M	15.4%	$13.82	-6.0%	Common Stock	26818M108
DAWN	Day One Biopharmaceuticals, Inc.	7,608,394	$102M	13.8%	$19.68	-0.7%	Common Stock	23954D109
IRON	Disc Medicine, Inc.	3,461,784	$73.36M	9.9%	$49.79	-55.3%	Common Stock	254604101
—	Vigil Neuroscience, Inc.	5,836,874	$57.14M	7.7%	$7.03	—	Common Stock	92673K108
—	Third Harmonic Bio, Inc.	10,907,859	$44.94M	6.1%	$18.97	—	Common Stock	88427A107
—	Aerovate Therapeutics, Inc.	2,039,249	$41.13M	5.6%	$11.88	—	Common Stock	008064107
REPL	Replimune Group, Inc.	2,098,300	$37.06M	5.0%	$29.91	-20.5%	Common Stock	76029N106
—	Generation Bio, Co.	8,279,484	$35.6M	4.8%	$7.08	—	Common Stock	37148K100
—	Akero Therapeutics, Inc.	594,251	$22.74M	3.1%	$21.15	—	Common Stock	00973Y108
—	Ikena Oncology, Inc.	5,018,178	$17.31M	2.3%	$12.54	—	Common Stock	45175G108
XLO	Xilio Therapeutics, Inc.	2,759,344	$8.747M	1.2%	$17.03	-81.6%	Common Stock	98422T100
—	AvroBio, Inc.	4,541,381	$4.541M	0.6%	$3.85	—	Common Stock	05455M100
—	Magenta Therapeutics, Inc.	3,791,698	$3.013M	0.4%	$4.13	—	Common Stock	55910K108
VRDN	Viridian Therapeutics, Inc.	90,072	$2.291M	0.3%	$18.63	+72.1%	Common Stock	92790C104
SPRO	Spero Therapeutics, Inc.	1,031,160	$1.495M	0.2%	$15.88	-89.5%	Common Stock	84833T103