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Insider · CIK 0001534265

Casdin Partners Master Fund, L.P.

CIK 0001534265 Name as filed on the most recent filing

Filed as Casdin Partners Master Fund, L.P. (55)

103 transaction lines · from 55 filings · filed 2018-07-23 to 2026-06-08 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.

2 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
2024-08-07 P, Open-market purchase Standard Biotools Inc.LAB 786,200, acquired Open Form 4 filing 0000919574-24-004339
2024-08-05 P, Open-market purchase Standard Biotools Inc.LAB 316,780, acquired Open Form 4 filing 0000919574-24-004280
2024-08-02 P, Open-market purchase Standard Biotools Inc.LAB 1,631,900, acquired Open Form 4 filing 0000919574-24-004280
2024-06-04 P, Open-market purchase GeneDx Holdings Corp.WGS 675,477, acquired Open Form 4 filing 0000919574-24-003510
2024-06-03 P, Open-market purchase GeneDx Holdings Corp.WGS 2,081,640, acquired Open Form 4 filing 0000919574-24-003510
2024-05-29 P, Open-market purchase GeneDx Holdings Corp.WGS 842,604, acquired Open Form 4 filing 0000919574-24-003432
2024-05-28 P, Open-market purchase GeneDx Holdings Corp.WGS 377,167, acquired Open Form 4 filing 0000919574-24-003355
2024-05-24 P, Open-market purchase GeneDx Holdings Corp.WGS 2,900,906, acquired Open Form 4 filing 0000919574-24-003355
2024-05-23 P, Open-market purchase Standard Biotools Inc.LAB 260,000, acquired Open Form 4 filing 0000919574-24-003356
2024-05-23 P, Open-market purchase GeneDx Holdings Corp.WGS 146,916, acquired Open Form 4 filing 0000919574-24-003355
2024-05-22 P, Open-market purchase Standard Biotools Inc.LAB 387,735, acquired Open Form 4 filing 0000919574-24-003308
2024-05-21 P, Open-market purchase Standard Biotools Inc.LAB 895,930, acquired Open Form 4 filing 0000919574-24-003308
2024-05-20 P, Open-market purchase Standard Biotools Inc.LAB 258,130, acquired Open Form 4 filing 0000919574-24-003308
2024-05-17 P, Open-market purchase Standard Biotools Inc.LAB 902,044, acquired Open Form 4 filing 0000919574-24-003252
2024-05-16 P, Open-market purchase Standard Biotools Inc.LAB 1,270,950, acquired Open Form 4 filing 0000919574-24-003252
2024-05-15 P, Open-market purchase Standard Biotools Inc.LAB 1,282,550, acquired Open Form 4 filing 0000919574-24-003252
2024-05-13 P, Open-market purchase GeneDx Holdings Corp.WGS 1,165,295, acquired Open Form 4 filing 0000919574-24-003212
2024-03-26 P, Open-market purchase 2seventy bio, Inc.TSVT 203,992, acquired Open Form 4 filing 0000919574-24-002241
2024-03-25 P, Open-market purchase 2seventy bio, Inc.TSVT 1,673,991, acquired Open Form 4 filing 0000919574-24-002176
2024-03-22 P, Open-market purchase 2seventy bio, Inc.TSVT 754,069, acquired Open Form 4 filing 0000919574-24-002176
2024-03-21 P, Open-market purchase 2seventy bio, Inc.TSVT 1,470,990, acquired Open Form 4 filing 0000919574-24-002176
2024-03-05 P, Open-market purchase GeneDx Holdings Corp.WGS 7,944, acquired Open Form 4 filing 0000919574-24-001889
2024-03-05 P, Open-market purchase Standard Biotools Inc.LAB 3,669, acquired Open Form 4 filing 0000919574-24-001888
2024-03-04 P, Open-market purchase GeneDx Holdings Corp.WGS 349,708, acquired Open Form 4 filing 0000919574-24-001889
2024-03-04 P, Open-market purchase Standard Biotools Inc.LAB 642,500, acquired Open Form 4 filing 0000919574-24-001888
2023-10-19 P, Open-market purchase Biolife Solutions IncBLFS 10,374,976, acquired Open Form 4 filing 0000919574-23-005783
2023-08-09 P, Open-market purchase Biolife Solutions IncBLFS 771,744, acquired Open Form 4 filing 0000919574-23-004543
2023-05-22 P, Open-market purchase Biolife Solutions IncBLFS 545,790, acquired Open Form 4 filing 0000919574-23-003449
2023-05-19 P, Open-market purchase Biolife Solutions IncBLFS 1,127,430, acquired Open Form 4 filing 0000919574-23-003449
2023-05-19 P, Open-market purchase Standard Biotools Inc.LAB 1,835,920, acquired Open Form 4 filing 0000919574-23-003425
2023-05-18 P, Open-market purchase Biolife Solutions IncBLFS 652,692, acquired Open Form 4 filing 0000919574-23-003408
2023-05-18 P, Open-market purchase Standard Biotools Inc.LAB 323,865, acquired Open Form 4 filing 0000919574-23-003425
2023-05-17 P, Open-market purchase Biolife Solutions IncBLFS 639,446, acquired Open Form 4 filing 0000919574-23-003408
2023-05-17 P, Open-market purchase Standard Biotools Inc.LAB 471,550, acquired Open Form 4 filing 0000919574-23-003425
2023-05-16 P, Open-market purchase Biolife Solutions IncBLFS 302,835, acquired Open Form 4 filing 0000919574-23-003408
2022-10-03 S, Open-market sale Maxcyte, Inc.MXCT 4,525,084, disposed Open Form 4 filing 0000919574-22-005788
2022-07-01 S, Open-market sale Maxcyte, Inc.MXCT 13,912,856, disposed Open Form 4 filing 0000919574-22-004059
2021-08-03 P, Open-market purchase Tenaya Therapeutics, Inc.TNYA 12,750,000, acquired Open Form 4 filing 0001209191-21-049765
2021-07-30 P, Open-market purchase Maxcyte, Inc.MXCT 23,400,000, acquired Open Form 4 filing 0000919574-21-004808
2021-07-26 P, Open-market purchase Absci CorpABSI 25,000,000, acquired Open Form 4 filing 0001628280-21-014732
2021-06-21 P, Open-market purchase Verve Therapeutics, Inc.VERV 20,900,000, acquired Open Form 4 filing 0000899243-21-025301
2021-02-17 P, Open-market purchase Decibel Therapeutics, Inc.DBTX 10,350,000, acquired Open Form 4 filing 0000899243-21-007441
2020-11-24 P, Open-market purchase Biolife Solutions IncBLFS 36,000,000, acquired Open Form 4 filing 0000919574-20-007362
2020-07-02 P, Open-market purchase Biolife Solutions IncBLFS 4,430,954, acquired Open Form 4 filing 0000919574-20-004430
2020-07-01 P, Open-market purchase Biolife Solutions IncBLFS 9,932,500, acquired Open Form 4 filing 0000919574-20-004430
2020-05-22 P, Open-market purchase Biolife Solutions IncBLFS 5,000,006, acquired Open Form 4 filing 0000919574-20-003820
2020-05-14 P, Open-market purchase Biolife Solutions IncBLFS 20,000,001, acquired Open Form 4 filing 0000919574-20-003747
2019-11-20 P, Open-market purchase Biolife Solutions IncBLFS 313,618, acquired Open Form 4 filing 0000919574-19-007402
2019-11-19 P, Open-market purchase Biolife Solutions IncBLFS 302,918, acquired Open Form 4 filing 0000919574-19-007402
2019-07-22 P, Open-market purchase Fulcrum Therapeutics, Inc.FULC 2,000,000, acquired Open Form 4 filing 0001104659-19-041306

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.

Search the catalog
Codes on this page
P, Open-market purchase
Open-market purchase
S, Open-market sale
Open-market sale
Relationships on this page
%, Ten percent owner
Ten percent owner

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.

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 2
  • Open-market sale 0
  • 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. Casdin Partners Master Fund, L.P., insider transactions. Retrieved 2026-08-25 from https://ebomi.com/insider/0001534265

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

This page as JSON The JSON twin is shaped by the same read model as this page, so the two cannot disagree. Its envelope carries the canonical URL, the retrieval time, the coverage claim, and the licence statement.