Insider · CIK 0001834217

Horn David R.

CIK 0001834217 Name as filed on the most recent filing

Filed as Horn David R. (23)

29 transaction lines · from 23 filings · filed 2021-06-04 to 2026-08-19 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 2026-08-26 05:24 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.

29 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 2026-08-26 05:24 UTC.

Transactions filed by this insider
Direction Date Code Company Value USD Filing
2026-08-18 S, Open-market sale Seer, Inc.SEER 14,809, disposed Open Form 4 filing 0001834217-26-000008
2026-08-14 P, Open-market purchase Edap TMS SAEDAP 47,500, acquired Open Form 4 filing 0001829126-26-008927
2026-05-20 S, Open-market sale Seer, Inc.SEER 12,352, disposed Open Form 4 filing 0001834217-26-000006
2026-02-18 S, Open-market sale Seer, Inc.SEER 15,447, disposed Open Form 4 filing 0001834217-26-000004
2025-11-19 S, Open-market sale Seer, Inc.SEER 13,400, disposed Open Form 4 filing 0001834217-25-000005
2025-08-20 S, Open-market sale Seer, Inc.SEER 13,955, disposed Open Form 4 filing 0001415889-25-022596
2025-05-20 S, Open-market sale Seer, Inc.SEER 14,028, disposed Open Form 4 filing 0001415889-25-014130
2025-02-04 S, Open-market sale Seer, Inc.SEER 7,940, disposed Open Form 4 filing 0001415889-25-003181
2024-02-22 S, Open-market sale Seer, Inc.SEER 20,024, disposed Open Form 4 filing 0001415889-24-005093
2024-02-05 S, Open-market sale Seer, Inc.SEER 6,015, disposed Open Form 4 filing 0001209191-24-002977
2023-02-21 S, Open-market sale Seer, Inc.SEER 24,606, disposed Open Form 4 filing 0001209191-23-011916
2023-02-07 S, Open-market sale Seer, Inc.SEER 16,861, disposed Open Form 4 filing 0001209191-23-007931
2023-01-17 S, Open-market sale Seer, Inc.SEER 13,320, disposed Open Form 4 filing 0001209191-23-004098
2022-12-08 S, Open-market sale Seer, Inc.SEER 124,070, disposed Open Form 4 filing 0001209191-22-060433
2022-02-02 S, Open-market sale Seer, Inc.SEER 51,226, disposed Open Form 4 filing 0001209191-22-007320
2022-01-03 S, Open-market sale Seer, Inc.SEER 52,645, disposed Open Form 4 filing 0001209191-22-001255
2021-12-06 S, Open-market sale Seer, Inc.SEER 532,183, disposed Open Form 4 filing 0001209191-21-068627
2021-11-01 S, Open-market sale Seer, Inc.SEER 2 lines 377,757, disposed Open Form 4 filing 0001209191-21-062830
2021-10-01 S, Open-market sale Seer, Inc.SEER 2 lines 338,466, disposed Open Form 4 filing 0001209191-21-059374
2021-09-01 S, Open-market sale Seer, Inc.SEER 2 lines 395,751, disposed Open Form 4 filing 0001209191-21-054521
2021-08-02 S, Open-market sale Seer, Inc.SEER 2 lines 311,939, disposed Open Form 4 filing 0001209191-21-049672
2021-07-01 S, Open-market sale Seer, Inc.SEER 3 lines 313,238, disposed Open Form 4 filing 0001209191-21-045423
2021-06-02 S, Open-market sale Seer, Inc.SEER 300,951, disposed Open Form 4 filing 0001209191-21-038206

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
D, Director
Director

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 1
  • Open-market sale 28
  • 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. Horn David R., insider transactions. Retrieved 2026-08-26 from https://ebomi.com/insider/0001834217

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

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