ATYR Pharma Inc

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ATYR Pharma Inc
TickerATYR
CIK #0001339970
CUSIP002120202
SectorLife Sciences - Biological Products, (No Disgnostic Substances)
Address3545 John Hopkins Court, Ste #250, San Diego, CA 92121
Source [EDGAR]
CIK Filing 2011 - 2025
[0001339970] 10-K
[0001339970] 10-Q
[0001339970] 3
[0001339970] 4
[0001339970] 8-K
[0001339970] D
[0001339970] SC 13D
[0001339970] SC 13G
Form 13D/13G Filer Form 13D/13G Subject Filed % Owned
Vanguard Group Inc ATYR Pharma Inc [2025-07-29] 0.0
BlackRock Inc ATYR Pharma Inc [2025-07-17] 0.0
Point72 Asset Management LP ATYR Pharma Inc [2024-10-15] 6.2
Logos Global Management LP ATYR Pharma Inc [2024-01-02] 0.9
Lytton Laurence W ATYR Pharma Inc [2023-02-22] 8.7
Venrock Healthcare Capital Partners II LP ATYR Pharma Inc [2021-09-27] 6.7
Ikarian Capital LLC ATYR Pharma Inc [2021-09-17] 5.3
Tang Capital Partners LP ATYR Pharma Inc [2021-09-17] 6.3
Aspire Capital Fund LLC ATYR Pharma Inc [2021-02-17] 0.15
Alyeska Investment Group LP ATYR Pharma Inc [2021-02-16] 8.3
Altium Capital Management LP ATYR Pharma Inc [2020-02-18] 5.8
Renaissance Technologies LLC ATYR Pharma Inc [2020-02-12] 5.14
Federated Investors Inc /PA/ ATYR Pharma Inc [2019-04-22] 16.16
Schimmel Paul ATYR Pharma Inc [2018-09-10] 5.3
Redmile Group LLC ATYR Pharma Inc [2018-03-08] 8.52
Viking Global Investors LP ATYR Pharma Inc [2017-09-11] 0.5
EcoR1 Capital LLC ATYR Pharma Inc [2017-01-30] 8.3
Baker Bros Advisors LP ATYR Pharma Inc [2016-02-16] 9.9
RS Investment Management Co LLC ATYR Pharma Inc [2016-02-12] 5.1
Alta Partners VIII LP ATYR Pharma Inc [2016-02-12] 7.5
CHP II LP ATYR Pharma Inc [2016-02-04] 7.4
Domain Partners VIII LP ATYR Pharma Inc [2016-01-19] 7.6
FMR LLC ATYR Pharma Inc [2015-09-10] 0.0
Polaris Venture Partners V LP ATYR Pharma Inc [2015-05-22] 7.8
Sofinnova Venture Partners IX LP ATYR Pharma Inc [2015-05-15] 11.0
Flynn James E ATYR Pharma Inc [2015-05-13] 1.1
Form 3/4/5 Filer 2011 - 2025
aTYR PHARMA INC
Benevich Eric
Zaknoen Sara
Coughlin Timothy
Schimmel Paul
Lucas Svetlana
Gross Jane A
Shukla Sanjay
Broadfoot Jill Marie
Denyes Nancy
Clarke John K
Hatfield Jeffrey S.
Blair James C
Mendlein John
Amanullah Ashraf
Nashat Amir
EcoR1 Capital Fund Qualified, L.P.
Blackburn Stan
King David John
Blake John T
Goldberg Mark Alan
Akkaraju Srinivas
Matsuoka Grove
Ravindran Sanuj K.
Cubitt Andrew
Falberg Kathryn E
Blackburn Kelly
Ashlock Melissa A.
McKew John C.
Chrzanowski Holly D.
Graham Marcy
Ramsdell Fred
Polaris Venture Partners Founders' Fund V, L.P.
Polaris Venture Management Co. V, L.L.C.
Polaris Venture Partners V, L.P.
Polaris Venture Partners Entrepreneurs' Fund V, L.P.
Polaris Venture Partners Special Founders' Fund V, L.P.
Park John Joseph
CHP II Management, LLC
Hull Brandon H
CHP II LP
Champsi Farah
Nohra Guy P
Alta Partners VIII, L.P.
Alta Partners Management VIII, LLC
Janney Daniel
Powell Michael
Mehra Anand
Sofinnova Management IX, L.L.C.
Healy James
Sofinnova Venture Partners IX, L.P.
Deerfield Mgmt L.P.
Flynn James E
Deerfield Mgmt III, L.P.
Deerfield Special Situations Fund, L.P.
Deerfield Management Company LP
Deerfield Private Design Fund III, L.P.
Domain Partners VIII, L.P.
Treu Jesse I
Vitullo Nicole
Schoemaker Kathleen K
Dovey Brian H
Halak Brian K
DP VIII Associates, L.P.
Weiner David M.
Chereau Frederic
Kamdar Kim P.
Domain Associates
Form 13F Holdings
Firm Period DFND Voting Shares
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FMR LLC [2025-06-30] DFND 13,350,665 13,350,665
BlackRock, Inc. [2025-06-30] SOLE 5,685,066 5,782,633
Vanguard Group Inc [2025-06-30] SOLE 0 4,540,191
Octagon Capital Advisors LP [2025-06-30] SOLE 3,820,000 3,820,000
Tikvah Management LLC [2025-06-30] SOLE 2,460,833 2,460,833
Geode Capital Management LLC [2025-06-30] DFND 2,098,076 2,098,076
UBS Group AG [2025-06-30] DFND 1,745,717 1,745,717
Woodline Partners LP [2025-06-30] SOLE 1,681,595 1,681,595
Millennium Management LLC [2025-06-30] SOLE 1,600,200 1,650,200
Alyeska Investment Group LP [2025-06-30] SOLE 1,412,749 1,412,749
State Street Corp [2025-06-30] DFND 1,119,523 1,239,663
Integral Health Asset Management LLC [2025-06-30] SOLE 1,050,000 1,050,000
Point72 Asset Management LP [2025-06-30] DFND 0 988,677
Tang Capital Management LLC [2025-06-30] OTR 0 671,134
Northern Trust Corp [2025-06-30] DFND 667,625 667,625
Susquehanna International Group LLP [2025-06-30] OTR 254,018 637,418
Erste Asset Management GmbH [2025-06-30] SOLE 600,000 600,000
Invesco Ltd. [2025-06-30] DFND 0 598,008
Renaissance Technologies LLC [2025-06-30] SOLE 518,355 518,355
Marshall Wace LLP [2025-06-30] OTR 0 511,412
GSA Capital Partners LLP [2025-06-30] SOLE 496,289 496,289
Citadel Advisors LLC [2025-06-30] DFND 462,417 462,417
MAI Capital Management [2025-06-30] SOLE 183,105 369,127
Barclays PLC [2025-06-30] SOLE 296,586 296,586
Ally Bridge Group NY LLC [2025-06-30] SOLE 287,720 287,720
Wells Fargo & Company/MN [2025-06-30] DFND 45,694 277,388
Morgan Stanley [2025-06-30] DFND 253,916 259,966
Charles Schwab Investment Management Inc [2025-06-30] SOLE 258,551 258,551
Ensign Peak Advisors, Inc [2025-06-30] SOLE 235,675 235,675
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