Insider · CIK 0001655962

York Charles N II

CIK 0001655962 Name as filed on the most recent filing

Filed as York Charles N II (28)

38 transaction lines · from 28 filings · filed 2017-12-05 to 2026-02-18 The span is the filing dates this catalog holds, not the entity's full filing history. Absence here is not evidence of absence at the SEC.

How this page attributes a trade

A line appears here when the filing that carries it names this CIK as a reporting owner, not only when the parser picked this CIK as the line's primary owner. That is why a joint filing appears on both owners' pages rather than vanishing from the second one. The catalog never merges two CIKs into one person and never splits one CIK into two: identity here is the SEC's own identifier and nothing else.

01

Issuers this insider has filed against

Ordered by last-seen filing date, newest first. Roles are as filed on the Form 4 and are not normalised.

Fault

This container could not be filled from the store. It is showing nothing because a read failed, not because no insider filed: those are different facts and this catalog will not let one stand in for the other. The last ingest the store recorded was 2026-08-22 05:23 UTC.

No issuer is recorded

The catalog holds no filing linking this CIK to an issuer.

02

Transactions

Every stored Form 4 line naming this reporting owner, newest transaction date first. Each row links to the filing it came from.

38 transactions · Newest transaction date first, id breaking the tie.

Fault

This container could not be filled from the store. It is showing nothing because a read failed, not because no insider filed: those are different facts and this catalog will not let one stand in for the other. The last ingest the store recorded was 2026-08-22 05:23 UTC.

Transactions filed by this insider
Direction Date Code Company Value USD Filing
2026-02-17 S, Open-market sale Day One Biopharmaceuticals, Inc.DAWN 70,359, disposed Open Form 4 filing 0001655962-26-000004
2025-11-17 S, Open-market sale Day One Biopharmaceuticals, Inc.DAWN 36,212, disposed Open Form 4 filing 0001655962-25-000006
2025-08-18 S, Open-market sale Day One Biopharmaceuticals, Inc.DAWN 27,786, disposed Open Form 4 filing 0001415889-25-022386
2025-05-16 S, Open-market sale Day One Biopharmaceuticals, Inc.DAWN 26,796, disposed Open Form 4 filing 0001415889-25-013679
2025-02-18 S, Open-market sale Day One Biopharmaceuticals, Inc.DAWN 52,278, disposed Open Form 4 filing 0001415889-25-005159
2024-11-18 S, Open-market sale Day One Biopharmaceuticals, Inc.DAWN 34,373, disposed Open Form 4 filing 0001415889-24-027224
2024-08-16 S, Open-market sale Day One Biopharmaceuticals, Inc.DAWN 36,860, disposed Open Form 4 filing 0001415889-24-021626
2024-05-16 S, Open-market sale Day One Biopharmaceuticals, Inc.DAWN 43,011, disposed Open Form 4 filing 0001415889-24-013616
2024-05-03 S, Open-market sale Day One Biopharmaceuticals, Inc.DAWN 144,214, disposed Open Form 4 filing 0001415889-24-012253
2024-05-02 S, Open-market sale Day One Biopharmaceuticals, Inc.DAWN 3,579, disposed Open Form 4 filing 0001415889-24-012253
2024-05-01 S, Open-market sale Day One Biopharmaceuticals, Inc.DAWN 933,397, disposed Open Form 4 filing 0001415889-24-012253
2024-02-16 S, Open-market sale Day One Biopharmaceuticals, Inc.DAWN 40,651, disposed Open Form 4 filing 0001415889-24-004469
2023-11-16 S, Open-market sale Day One Biopharmaceuticals, Inc.DAWN 11,176, disposed Open Form 4 filing 0001209191-23-055896
2023-08-17 S, Open-market sale Day One Biopharmaceuticals, Inc.DAWN 12,779, disposed Open Form 4 filing 0001209191-23-046430
2023-05-16 S, Open-market sale Day One Biopharmaceuticals, Inc.DAWN 12,532, disposed Open Form 4 filing 0001209191-23-030395
2023-02-17 S, Open-market sale Day One Biopharmaceuticals, Inc.DAWN 187,790, disposed Open Form 4 filing 0001209191-23-011263
2023-02-16 S, Open-market sale Day One Biopharmaceuticals, Inc.DAWN 18,203, disposed Open Form 4 filing 0001209191-23-010823
2023-01-20 S, Open-market sale Day One Biopharmaceuticals, Inc.DAWN 227,523, disposed Open Form 4 filing 0001209191-23-004485
2022-12-20 S, Open-market sale Day One Biopharmaceuticals, Inc.DAWN 200,650, disposed Open Form 4 filing 0001209191-22-062486
2022-11-21 S, Open-market sale Day One Biopharmaceuticals, Inc.DAWN 2 lines 207,570, disposed Open Form 4 filing 0001209191-22-058493
2022-11-16 S, Open-market sale Day One Biopharmaceuticals, Inc.DAWN 9,228, disposed Open Form 4 filing 0001209191-22-057645
2022-11-01 S, Open-market sale Day One Biopharmaceuticals, Inc.DAWN 200,313, disposed Open Form 4 filing 0001209191-22-055609
2022-10-03 S, Open-market sale Day One Biopharmaceuticals, Inc.DAWN 200,473, disposed Open Form 4 filing 0001209191-22-052763
2022-09-01 S, Open-market sale Day One Biopharmaceuticals, Inc.DAWN 2 lines 232,484, disposed Open Form 4 filing 0001209191-22-048900
2022-08-16 S, Open-market sale Day One Biopharmaceuticals, Inc.DAWN 26,474, disposed Open Form 4 filing 0001209191-22-046482
2022-08-04 S, Open-market sale Day One Biopharmaceuticals, Inc.DAWN 200,541, disposed Open Form 4 filing 0001209191-22-044601
2022-07-18 S, Open-market sale Day One Biopharmaceuticals, Inc.DAWN 50,000, disposed Open Form 4 filing 0001209191-22-042766
2022-07-08 S, Open-market sale Day One Biopharmaceuticals, Inc.DAWN 28,320, disposed Open Form 4 filing 0001209191-22-041977
2022-07-05 S, Open-market sale Day One Biopharmaceuticals, Inc.DAWN 16,000, disposed Open Form 4 filing 0001209191-22-041410
2022-07-01 S, Open-market sale Day One Biopharmaceuticals, Inc.DAWN 29,580, disposed Open Form 4 filing 0001209191-22-041410
2017-12-05 P, Open-market purchase Aeglea BioTherapeutics, Inc.AGLE 48,700, acquired Open Form 4 filing 0001140361-17-045129
2017-12-04 P, Open-market purchase Aeglea BioTherapeutics, Inc.AGLE 16,197, acquired Open Form 4 filing 0001140361-17-045129
2017-12-01 P, Open-market purchase Aeglea BioTherapeutics, Inc.AGLE 29,855, acquired Open Form 4 filing 0001140361-17-045129
2017-08-15 P, Open-market purchase Aeglea BioTherapeutics, Inc.AGLE 4,929, acquired Open Form 4 filing 0001140361-17-045129
2017-02-15 P, Open-market purchase Aeglea BioTherapeutics, Inc.AGLE 8,568, acquired Open Form 4 filing 0001140361-17-045129
2016-08-15 P, Open-market purchase Aeglea BioTherapeutics, Inc.AGLE 7,974, acquired Open Form 4 filing 0001140361-17-045129

This column is intentionally blank

No transaction line is stored for this reporting owner, though the catalog holds filings naming them. That happens when the filings report only holdings or only positions the store does not carry, and when a parse failed; each filing page states its own parse status.

Codes on this page
S, Open-market sale
Open-market sale
P, Open-market purchase
Open-market purchase
Relationships on this page
O, Officer
Officer

Every value is as reported on the Form 4, totalled to the dollar. Share counts, the price per share and the full list of reporting owners are on each filing's own page, which every row here opens. A row marked n lines adds up that many filed lines of one filing, on one day, on one side of the market; a filing whose lines fall across two pages is left as its lines on both, so no total here is ever short.

What this insider's stored lines contain

Exact counts over every stored line for this entity. This is a statement of composition, not a filter: the only filter this page offers is the open-market one above, because that is the only one an index serves today.

  • Open-market purchase 6
  • Open-market sale 32
  • Option exercise 0
  • Grant or award 0
  • Tax withholding 0
  • Disposition to the issuer 0
  • In-the-money option exercise 0

How to cite this page

ebomi catalog. York Charles N II, insider transactions. Retrieved 2026-08-22 from https://ebomi.com/insider/0001655962

Balogh, A. Insider trading. Scientific Data 10, 237 (2023) doi:10.1038/s41597-023-02147-6

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