Atlas Venture Life Science Advisors, LLC Long-Term Concentrated

CIK: 0001917529 · Show all filings

Period: Q1 2023 (← Previous) (Next →)

Filing Date: May 15, 2023

Total Value ($000): $738,550 (100.0% shares, 0.0% debt)

Holdings (16)

KYMR Kymera Therapeutics, Inc. 23.5%

Value ($000) $173,580 Shares 5,858,262 Est. Cost $58.25 Unrealized -44.6%

DYN Dyne Therapeutics, Inc. 15.4%

Value ($000) $113,880 Shares 9,885,449 Est. Cost $13.82 Unrealized -6.0%

DAWN Day One Biopharmaceuticals, Inc. 13.8%

Value ($000) $101,724 Shares 7,608,394 Est. Cost $19.68 Unrealized -0.7%

IRON Disc Medicine, Inc. 9.9%

Value ($000) $73,355 Shares 3,461,784 Est. Cost $49.79 Unrealized -55.3%

— Vigil Neuroscience, Inc. 7.7%

Value ($000) $57,143 Shares 5,836,874 Est. Cost $7.03 Unrealized —

— Third Harmonic Bio, Inc. 6.1%

Value ($000) $44,940 Shares 10,907,859 Est. Cost $18.97 Unrealized —

— Aerovate Therapeutics, Inc. 5.6%

Value ($000) $41,132 Shares 2,039,249 Est. Cost $11.88 Unrealized —

REPL Replimune Group, Inc. 5.0%

Value ($000) $37,056 Shares 2,098,300 Est. Cost $29.91 Unrealized -20.5%

— Generation Bio, Co. 4.8%

Value ($000) $35,602 Shares 8,279,484 Est. Cost $7.08 Unrealized —

— Akero Therapeutics, Inc. 3.1%

Value ($000) $22,736 Shares 594,251 Est. Cost $21.15 Unrealized —

— Ikena Oncology, Inc. 2.3%

Value ($000) $17,313 Shares 5,018,178 Est. Cost $12.54 Unrealized —

XLO Xilio Therapeutics, Inc. 1.2%

Value ($000) $8,747 Shares 2,759,344 Est. Cost $17.03 Unrealized -81.6%

— AvroBio, Inc. 0.6%

Value ($000) $4,541 Shares 4,541,381 Est. Cost $3.85 Unrealized —

— Magenta Therapeutics, Inc. 0.4%

Value ($000) $3,013 Shares 3,791,698 Est. Cost $4.13 Unrealized —

VRDN Viridian Therapeutics, Inc. 0.3%

Value ($000) $2,291 Shares 90,072 Est. Cost $18.63 Unrealized +72.1%

SPRO Spero Therapeutics, Inc. 0.2%

Value ($000) $1,495 Shares 1,031,160 Est. Cost $15.88 Unrealized -89.5%

Ticker	Issuer	Shares	Value ($000)	%	Est. Cost	Unrealized	Class	CUSIP
KYMR	Kymera Therapeutics, Inc.	5,858,262	$173,580	23.5%	$58.25	-44.6%	Common Stock	501575104
DYN	Dyne Therapeutics, Inc.	9,885,449	$113,880	15.4%	$13.82	-6.0%	Common Stock	26818M108
DAWN	Day One Biopharmaceuticals, Inc.	7,608,394	$101,724	13.8%	$19.68	-0.7%	Common Stock	23954D109
IRON	Disc Medicine, Inc.	3,461,784	$73,355	9.9%	$49.79	-55.3%	Common Stock	254604101
—	Vigil Neuroscience, Inc.	5,836,874	$57,143	7.7%	$7.03	—	Common Stock	92673K108
—	Third Harmonic Bio, Inc.	10,907,859	$44,940	6.1%	$18.97	—	Common Stock	88427A107
—	Aerovate Therapeutics, Inc.	2,039,249	$41,132	5.6%	$11.88	—	Common Stock	008064107
REPL	Replimune Group, Inc.	2,098,300	$37,056	5.0%	$29.91	-20.5%	Common Stock	76029N106
—	Generation Bio, Co.	8,279,484	$35,602	4.8%	$7.08	—	Common Stock	37148K100
—	Akero Therapeutics, Inc.	594,251	$22,736	3.1%	$21.15	—	Common Stock	00973Y108
—	Ikena Oncology, Inc.	5,018,178	$17,313	2.3%	$12.54	—	Common Stock	45175G108
XLO	Xilio Therapeutics, Inc.	2,759,344	$8,747	1.2%	$17.03	-81.6%	Common Stock	98422T100
—	AvroBio, Inc.	4,541,381	$4,541	0.6%	$3.85	—	Common Stock	05455M100
—	Magenta Therapeutics, Inc.	3,791,698	$3,013	0.4%	$4.13	—	Common Stock	55910K108
VRDN	Viridian Therapeutics, Inc.	90,072	$2,291	0.3%	$18.63	+72.1%	Common Stock	92790C104
SPRO	Spero Therapeutics, Inc.	1,031,160	$1,495	0.2%	$15.88	-89.5%	Common Stock	84833T103