Atlas Venture Life Science Advisors, LLC Long-Term Concentrated

Name: Atlas Venture Life Science Advisors, LLC Q4 2023 13F Filing | 13F Explorer
Creator: Atlas Venture Life Science Advisors, LLC
Published: 2024-02-09

Location: Cambridge, MA

CIK: 0001917529 · Show all filings

Period: Q4 2023 (← Previous) (Next →)

Filing Date: Feb 9, 2024

Total Value: $840M (100.0% shares, 0.0% debt)

Holdings (16)

KYMR Kymera Therapeutics, Inc. 17.8%

Value $149M Shares 5,858,262 Est. Cost $58.25 Unrealized -69.3%

IRON Disc Medicine, Inc. 17.6%

Value $148M Shares 2,555,172 Est. Cost $49.79 Unrealized +2.8%

DYN Dyne Therapeutics, Inc. 15.7%

Value $131M Shares 9,885,449 Est. Cost $13.82 Unrealized -29.3%

— Third Harmonic Bio, Inc. 14.2%

Value $120M Shares 10,907,859 Est. Cost $18.97 Unrealized —

DAWN Day One Biopharmaceuticals, Inc. 13.2%

Value $111M Shares 7,608,394 Est. Cost $19.68 Unrealized -38.4%

KRRO Korro Bio, Inc. 6.4%

Value $53.65M Shares 1,119,292 Est. Cost $32.95 Unrealized 0.0%

— Aerovate Therapeutics, Inc. 5.5%

Value $46.15M Shares 2,039,249 Est. Cost $11.88 Unrealized —

— Vigil Neuroscience, Inc. 2.3%

Value $19.73M Shares 5,836,874 Est. Cost $7.03 Unrealized —

REPL Replimune Group, Inc. 2.1%

Value $17.69M Shares 2,098,300 Est. Cost $29.91 Unrealized -61.2%

— Generation Bio, Co. 1.6%

Value $13.66M Shares 8,279,484 Est. Cost $7.08 Unrealized —

— Ikena Oncology, Inc. 1.2%

Value $9.886M Shares 5,018,178 Est. Cost $12.54 Unrealized —

— Akero Therapeutics, Inc. 1.0%

Value $8.389M Shares 359,251 Est. Cost $21.15 Unrealized —

— AvroBio, Inc. 0.7%

Value $6.176M Shares 4,541,381 Est. Cost $3.85 Unrealized —

DNTH Dianthus Therapeutics, Inc. 0.3%

Value $2.465M Shares 236,979 Est. Cost $12.62 Unrealized -12.4%

XLO Xilio Therapeutics, Inc. 0.2%

Value $1.518M Shares 2,759,344 Est. Cost $17.03 Unrealized -91.7%

SPRO Spero Therapeutics, Inc. 0.2%

Value $1.49M Shares 1,013,438 Est. Cost $15.88 Unrealized -92.5%

Ticker	Issuer	Shares	Value	%	Est. Cost	Unrealized	Class	CUSIP
KYMR	Kymera Therapeutics, Inc.	5,858,262	$149M	17.8%	$58.25	-69.3%	Common Stock	501575104
IRON	Disc Medicine, Inc.	2,555,172	$148M	17.6%	$49.79	+2.8%	Common Stock	254604101
DYN	Dyne Therapeutics, Inc.	9,885,449	$131M	15.7%	$13.82	-29.3%	Common Stock	26818M108
—	Third Harmonic Bio, Inc.	10,907,859	$120M	14.2%	$18.97	—	Common Stock	88427A107
DAWN	Day One Biopharmaceuticals, Inc.	7,608,394	$111M	13.2%	$19.68	-38.4%	Common Stock	23954D109
KRRO	Korro Bio, Inc.	1,119,292	$53.65M	6.4%	$32.95	0.0%	Common Stock	500946108
—	Aerovate Therapeutics, Inc.	2,039,249	$46.15M	5.5%	$11.88	—	Common Stock	008064107
—	Vigil Neuroscience, Inc.	5,836,874	$19.73M	2.3%	$7.03	—	Common Stock	92673K108
REPL	Replimune Group, Inc.	2,098,300	$17.69M	2.1%	$29.91	-61.2%	Common Stock	76029N106
—	Generation Bio, Co.	8,279,484	$13.66M	1.6%	$7.08	—	Common Stock	37148K100
—	Ikena Oncology, Inc.	5,018,178	$9.886M	1.2%	$12.54	—	Common Stock	45175G108
—	Akero Therapeutics, Inc.	359,251	$8.389M	1.0%	$21.15	—	Common Stock	00973Y108
—	AvroBio, Inc.	4,541,381	$6.176M	0.7%	$3.85	—	Common Stock	05455M100
DNTH	Dianthus Therapeutics, Inc.	236,979	$2.465M	0.3%	$12.62	-12.4%	Common Stock	252828108
XLO	Xilio Therapeutics, Inc.	2,759,344	$1.518M	0.2%	$17.03	-91.7%	Common Stock	98422T100
SPRO	Spero Therapeutics, Inc.	1,013,438	$1.49M	0.2%	$15.88	-92.5%	Common Stock	84833T103