Insider · CIK 0001523288

Day David

CIK 0001523288 Name as filed on the most recent filing

Filed as Day David (44)

62 transaction lines · from 44 filings · filed 2013-02-20 to 2025-08-20 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.

62 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
2025-08-18 S, Open-market sale Magnite, Inc.MGNI 318,779, disposed Open Form 4 filing 0001415889-25-022456
2025-06-30 S, Open-market sale Magnite, Inc.MGNI 477,004, disposed Open Form 4 filing 0001415889-25-019023
2025-06-26 S, Open-market sale Magnite, Inc.MGNI 754,200, disposed Open Form 4 filing 0001415889-25-018286
2025-06-24 S, Open-market sale Magnite, Inc.MGNI 698,250, disposed Open Form 4 filing 0001415889-25-018286
2025-06-18 S, Open-market sale Magnite, Inc.MGNI 722,867, disposed Open Form 4 filing 0001415889-25-017858
2025-02-07 S, Open-market sale Magnite, Inc.MGNI 780,000, disposed Open Form 4 filing 0001415889-25-003396
2025-02-06 S, Open-market sale Magnite, Inc.MGNI 243,046, disposed Open Form 4 filing 0001415889-25-003396
2025-01-03 S, Open-market sale Magnite, Inc.MGNI 226,865, disposed Open Form 4 filing 0001415889-25-001033
2024-12-17 S, Open-market sale Magnite, Inc.MGNI 220,320, disposed Open Form 4 filing 0001415889-24-029756
2024-12-16 S, Open-market sale Magnite, Inc.MGNI 191,427, disposed Open Form 4 filing 0001415889-24-029756
2024-07-15 S, Open-market sale Magnite, Inc.MGNI 286,155, disposed Open Form 4 filing 0001415889-24-019672
2024-06-12 S, Open-market sale Magnite, Inc.MGNI 298,399, disposed Open Form 4 filing 0001415889-24-016936
2024-06-03 S, Open-market sale Magnite, Inc.MGNI 269,516, disposed Open Form 4 filing 0001415889-24-015585
2024-05-16 S, Open-market sale Magnite, Inc.MGNI 232,440, disposed Open Form 4 filing 0001415889-24-013563
2023-08-16 S, Open-market sale Magnite, Inc.MGNI 75,438, disposed Open Form 4 filing 0001209191-23-046539
2023-07-11 S, Open-market sale Magnite, Inc.MGNI 143,760, disposed Open Form 4 filing 0001209191-23-042224
2023-06-29 S, Open-market sale Magnite, Inc.MGNI 301,896, disposed Open Form 4 filing 0001209191-23-040364
2023-06-13 S, Open-market sale Magnite, Inc.MGNI 205,227, disposed Open Form 4 filing 0001209191-23-037031
2023-06-12 S, Open-market sale Magnite, Inc.MGNI 16,339, disposed Open Form 4 filing 0001209191-23-037031
2023-05-16 S, Open-market sale Magnite, Inc.MGNI 174,798, disposed Open Form 4 filing 0001209191-23-030823
2021-08-16 S, Open-market sale Magnite, Inc.MGNI 138,847, disposed Open Form 4 filing 0001209191-21-052355
2021-05-17 S, Open-market sale Magnite, Inc.MGNI 924,083, disposed Open Form 4 filing 0001209191-21-034207
2021-03-25 S, Open-market sale Magnite, Inc.MGNI 415,442, disposed Open Form 4 filing 0001595974-21-000018
2021-03-10 S, Open-market sale Magnite, Inc.MGNI 945,674, disposed Open Form 4 filing 0001595974-21-000017
2021-02-16 S, Open-market sale Magnite, Inc.MGNI 447,407, disposed Open Form 4 filing 0001595974-21-000005
2020-11-30 S, Open-market sale Magnite, Inc.MGNI 2 lines 350,495, disposed Open Form 4 filing 0001595974-20-000164
2020-11-23 S, Open-market sale Magnite, Inc.MGNI 203,441, disposed Open Form 4 filing 0001595974-20-000161
2020-11-20 S, Open-market sale Magnite, Inc.MGNI 179,520, disposed Open Form 4 filing 0001595974-20-000161
2020-11-19 S, Open-market sale Magnite, Inc.MGNI 2 lines 1,773,044, disposed Open Form 4 filing 0001595974-20-000161
2020-11-16 S, Open-market sale Magnite, Inc.MGNI 179,791, disposed Open Form 4 filing 0001595974-20-000156
2020-11-09 S, Open-market sale Magnite, Inc.MGNI 366,900, disposed Open Form 4 filing 0001595974-20-000153
2020-11-06 S, Open-market sale Magnite, Inc.MGNI 453,089, disposed Open Form 4 filing 0001595974-20-000153
2020-10-14 S, Open-market sale Magnite, Inc.MGNI 111,901, disposed Open Form 4 filing 0001595974-20-000141
2020-10-13 S, Open-market sale Magnite, Inc.MGNI 116,359, disposed Open Form 4 filing 0001595974-20-000141
2020-06-08 S, Open-market sale Rubicon Project, Inc.RUBI 86,900, disposed Open Form 4 filing 0001595974-20-000094
2020-06-05 S, Open-market sale Rubicon Project, Inc.RUBI 229,242, disposed Open Form 4 filing 0001595974-20-000088
2020-05-20 S, Open-market sale Rubicon Project, Inc.RUBI 74,934, disposed Open Form 4 filing 0001595974-20-000081
2020-05-20 S, Open-market sale Rubicon Project, Inc.RUBI 66,510, disposed Open Form 4 filing 0001595974-20-000063
2020-05-19 S, Open-market sale Rubicon Project, Inc.RUBI 54,376, disposed Open Form 4 filing 0001595974-20-000081
2020-05-19 S, Open-market sale Rubicon Project, Inc.RUBI 54,376, disposed Open Form 4 filing 0001595974-20-000063
2020-05-18 S, Open-market sale Rubicon Project, Inc.RUBI 60,523, disposed Open Form 4 filing 0001595974-20-000081
2020-05-18 S, Open-market sale Rubicon Project, Inc.RUBI 60,523, disposed Open Form 4 filing 0001595974-20-000063
2020-01-16 S, Open-market sale Rubicon Project, Inc.RUBI 255,534, disposed Open Form 4 filing 0001595974-20-000012
2019-11-18 S, Open-market sale Rubicon Project, Inc.RUBI 58,372, disposed Open Form 4 filing 0001595974-19-000143
2019-05-17 S, Open-market sale Rubicon Project, Inc.RUBI 76,729, disposed Open Form 4 filing 0001595974-19-000084
2019-05-16 S, Open-market sale Rubicon Project, Inc.RUBI 80,464, disposed Open Form 4 filing 0001595974-19-000084
2019-03-18 S, Open-market sale Rubicon Project, Inc.RUBI 383,042, disposed Open Form 4 filing 0001595974-19-000053
2018-11-15 S, Open-market sale Rubicon Project, Inc.RUBI 115,188, disposed Open Form 4 filing 0001595974-18-000112

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
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 0
  • Open-market sale 62
  • 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. Day David, insider transactions. Retrieved 2026-08-22 from https://ebomi.com/insider/0001523288

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

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