Tang Capital Management’s aTyr Pharma ATYR Stock Holding History

Tang Capital Management’s Portfolio ATYR Stock Details ATYR Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2025 Q4	–	Sell	-671,134	Closed	-$484K	–	196
2025 Q3	$484K	Hold	671,134	–	–	0.02%	177
2025 Q2	$3.4M	Hold	671,134	–	–	0.17%	103
2025 Q1	$2.03M	Hold	671,134	–	–	0.11%	117
2024 Q4	$2.43M	Hold	671,134	–	–	0.16%	100
2024 Q3	$1.18M	Hold	671,134	–	–	0.08%	105
2024 Q2	$1.05M	Buy	671,134 +200,000	+42%	+$348K	0.11%	92
2024 Q1	$919K	Hold	471,134	–	–	0.1%	89
2023 Q4	$664K	Hold	471,134	–	–	0.06%	109
2023 Q3	$744K	Buy	471,134 +321,134	+214%	+$594K	0.11%	89
2023 Q2	$324K	Buy	150,000 +26,570	+22%	+$58K	0.05%	92
2023 Q1	$259K	Hold	123,430	–	–	0.04%	93
2022 Q4	$270K	Sell	123,430 -990,023	-89%	-$2.33M	0.04%	82
2022 Q3	$3.34M	Hold	1,113,453	–	–	0.41%	55
2022 Q2	$3.15M	Hold	1,113,453	–	–	0.48%	40
2022 Q1	$5.96M	Hold	1,113,453	–	–	1.19%	25
2021 Q4	$8.32M	Hold	1,113,453	–	–	1.67%	16
2021 Q3	$10.1M	Buy	+1,113,453	New	+$6.66M	2.1%	12
2017 Q1	–	Sell	-19,959	Closed	-$601K	–	6
2016 Q4	$601K	Hold	19,959	–	–	0.32%	7
2016 Q3	$889K	Hold	19,959	–	–	0.37%	7
2016 Q2	$777K	Buy	19,959 +6,388	+47%	+$297K	0.35%	11
2016 Q1	$749K	Buy	+13,571	New	+$1.03M	0.34%	13

Other funds holding ATYR

Rosalind Advisors Toronto, Ontario, Canada $269M AUM 103.38% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Federated Hermes Pittsburgh, Pennsylvania $69.6B AUM 42.52% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

GCP

GSA Capital Partners London, United Kingdom $1.59B AUM 39.81% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return

Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

Tang Capital Management's ATYR Position: Q4 2025 in Review

Tang Capital Management sold out of aTyr Pharma (ATYR) in Q4 2025, closing a stake of 671,134 shares — an estimated $484K sold.

Tang Capital Management first reported a position in ATYR in Q1 2016 and held it in 21 quarters. The position peaked at $10.1M in Q3 2021. 84 funds tracked by Wall St. Rank hold ATYR as of Q4 2025.

Tang Capital Management reported no remaining aTyr Pharma position as of Q4 2025 after selling out during the quarter.
Tang Capital Management sold 671,134 aTyr Pharma shares in Q4 2025, an estimated $484K.
Tang Capital Management first reported a position in aTyr Pharma in Q1 2016 and held it in 21 quarters.
Tang Capital Management's aTyr Pharma position peaked at $10.1M in Q3 2021.
84 funds tracked by Wall St. Rank held aTyr Pharma as of Q4 2025.

Based on Tang Capital Management's 13F filing for Q4 2025, filed 17 Feb 2026.