aTyr Pharma, Inc.
DE ˙ DB ˙ US0021202025
0,39 EUR 0,00 (0,00%)
2026-06-04
PREȚUL ACȚIUNILOR
SecurityDE:471A / aTyr Pharma, Inc.
InstitutionVanguard Group Inc
Latest Disclosed Ownership0 shares
Ownership 0.00%
Vanguard Group Inc ownership in 471A / aTyr Pharma, Inc.

2026-03-26 - Vanguard Group Inc has filed an SCHEDULE 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 0 shares of aTyr Pharma, Inc. (DE:471A). This represents 0.0 percent ownership of the company. In their previous filing dated 2025-07-29 , Vanguard Group Inc had reported owning 4,655,048 shares, indicating a decrease of -100.00 percent.

Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File
Date
Effective
Date
Form Prev
Shares
Latest
Shares
ΔShares
(Percent)
Ownership
(Percent)
ΔOwnership
(Percent)
2026-03-26 2026-03-26 13G/A 4,655,048 0 -100.00 0.00 -100.00
2025-07-29 2025-07-29 13G 4,655,048 5.23

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

Upgrade to unlock premium data and export to Excel .

Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-01-29 2025-12-31 13F ATYR PHARMA COM NEW 002120202 4,961,871 -669,064 -11.88 3,885 -4.29 0.0001
2025-11-07 2025-09-30 13F ATYR PHARMA COM NEW 002120202 5,630,935 975,887 20.96 4,060 -82.80 0.0001
2025-08-11 2025-06-30 13F ATYR PHARMA COM NEW 002120202 4,655,048 648,313 16.18 23,601 95.05 0.0004
2025-05-09 2025-03-31 13F ATYR PHARMA COM NEW 002120202 4,006,735 401,808 11.15 12,100 -7.27 0.0002
2025-02-11 2024-12-31 13F ATYR PHARMA COM NEW 002120202 3,604,927 617,349 20.66 13,050 148.17 0.0002
2024-11-13 2024-09-30 13F ATYR PHARMA COM NEW 002120202 2,987,578 335,421 12.65 5,258 27.10 0.0001
2024-08-13 2024-06-30 13F ATYR PHARMA COM NEW 002120202 2,652,157 0 0.00 4,137 -20.00 0.0001
2024-05-10 2024-03-31 13F ATYR PHARMA COM NEW 002120202 2,652,157 283,703 11.98 5,172 54.87 0.0001
2024-03-11 2023-12-31 13F/A-1 ATYR PHARMA COM NEW 002120202 2,368,454 84,848 3.72 3,340 -7.46 0.0001
2024-02-14 2023-12-31 13F ATYR PHARMA COM NEW 002120202 2,368,454 84,848 3,340 0.0001
2023-12-18 2023-09-30 13F/A-1 ATYR PHARMA COM NEW 002120202 2,283,606 -17,108 -0.74 3,608 -27.39 0.0001
2023-11-14 2023-09-30 13F ATYR PHARMA COM NEW 002120202 2,283,606 -17,108 3,608 0.0001
2023-08-14 2023-06-30 13F ATYR PHARMA COM NEW 002120202 2,300,714 206,457 9.86 4,970 13.01 0.0001
2023-07-14 2023-03-31 13F/A-1 ATYR PHARMA COM NEW 002120202 2,094,257 954,131 83.69 4,398 76.16 0.0001
2023-05-15 2023-03-31 13F ATYR PHARMA COM NEW 002120202 2,094,257 954,131 4,398 0.0001
2023-02-10 2022-12-31 13F ATYR PHARMA COM NEW 002120202 1,140,126 593 0.05 2,497 -26.97 0.0001
2022-11-14 2022-09-30 13F ATYR PHARMA COM NEW 002120202 1,139,533 0 0.00 3,418 5.98 0.0001
2022-08-12 2022-06-30 13F ATYR PHARMA COM NEW 002120202 1,139,533 0 0.00 3,225 -47.11 0.0001
2022-05-13 2022-03-31 13F ATYR PHARMA COM NEW 002120202 1,139,533 26,342 2.37 6,097 -26.67 0.0001
2022-02-14 2021-12-31 13F ATYR PHARMA COM NEW 002120202 1,113,191 206,450 22.77 8,315 0.98 0.0002
2021-11-12 2021-09-30 13F ATYR PHARMA COM NEW 002120202 906,741 311,539 52.34 8,234 183.54 0.0002
2021-08-13 2021-06-30 13F ATYR PHARMA COM NEW 002120202 595,202 300,097 101.69 2,904 121.17 0.0001
2021-05-14 2021-03-31 13F ATYR PHARMA COM NEW 002120202 295,105 44,958 17.97 1,313 35.22 0.0000
2021-02-12 2020-12-31 13F ATYR PHARMA COM NEW 002120202 250,147 16,297 6.97 971 28.61 0.0000
2020-11-16 2020-09-30 13F ATYR PHARMA COM NEW 002120202 233,850 11,912 5.37 755 -23.35 0.0000
2020-08-14 2020-06-30 13F ATYR PHARMA COM NEW 002120202 221,938 0 0.00 985 58.62 0.0000
2020-05-15 2020-03-31 13F ATYR PHARMA COM NEW 002120202 221,938 56,355 34.03 621 -10.00 0.0000
2020-02-14 2019-12-31 13F ATYR PHARMA COM NEW 002120202 165,583 -900 -0.54 690 18.35 0.0000
2019-11-14 2019-09-30 13F ATYR PHARMA COM NEW 002120202 166,483 166,483 583 0.0000
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.