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Insider · CIK 0001769845

Day Mark J.

CIK 0001769845 Name as filed on the most recent filing

Filed as Day Mark J. (8)

23 transaction lines · from 8 filings · filed 2020-08-13 to 2024-03-05 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 2026-08-21 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.

23 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 2026-08-21 05:23 UTC.

Transactions filed by this insider
Direction Date Issuer Code Shares Price Value USD Filing
2024-03-04 iRhythm Technologies, Inc.
IRTC 		S, Open-market sale 3,248 disposed 111.14 360,982.72 Form 4, filing 0001388658-24-000061
2024-02-29 iRhythm Technologies, Inc.
IRTC 		S, Open-market sale 1,475 disposed 121.96 179,891.00 Form 4, filing 0001388658-24-000042
2023-03-03 iRhythm Technologies, Inc.
IRTC 		S, Open-market sale 2,116 disposed 117.23 248,058.68 Form 4, filing 0001388658-23-000034
2023-02-28 iRhythm Technologies, Inc.
IRTC 		S, Open-market sale 1,898 disposed 117.83 223,641.34 Form 4, filing 0001388658-23-000016
2023-02-28 iRhythm Technologies, Inc.
IRTC 		S, Open-market sale 15 disposed 119.28 1,789.20 Form 4, filing 0001388658-23-000016
2022-03-04 iRhythm Technologies, Inc.
IRTC 		S, Open-market sale 2,518 disposed 132.67 334,068.85 Form 4, filing 0001388658-22-000035
2022-02-17 iRhythm Technologies, Inc.
IRTC 		S, Open-market sale 3,975 disposed 121.04 481,134.00 Form 4, filing 0001388658-22-000002
2022-02-17 iRhythm Technologies, Inc.
IRTC 		S, Open-market sale 87 disposed 118.93 10,346.91 Form 4, filing 0001388658-22-000002
2020-10-01 iRhythm Technologies, Inc.
IRTC 		S, Open-market sale 4,406 disposed 229.45 1,010,956.70 Form 4, filing 0001388658-20-000244
2020-10-01 iRhythm Technologies, Inc.
IRTC 		S, Open-market sale 4,280 disposed 230.36 985,939.94 Form 4, filing 0001388658-20-000244
2020-10-01 iRhythm Technologies, Inc.
IRTC 		S, Open-market sale 3,557 disposed 228.68 813,419.38 Form 4, filing 0001388658-20-000244
2020-10-01 iRhythm Technologies, Inc.
IRTC 		S, Open-market sale 2,280 disposed 227.52 518,752.44 Form 4, filing 0001388658-20-000244
2020-10-01 iRhythm Technologies, Inc.
IRTC 		S, Open-market sale 1,146 disposed 236.88 271,468.15 Form 4, filing 0001388658-20-000244
2020-10-01 iRhythm Technologies, Inc.
IRTC 		S, Open-market sale 657 disposed 238.48 156,682.81 Form 4, filing 0001388658-20-000244
2020-10-01 iRhythm Technologies, Inc.
IRTC 		S, Open-market sale 610 disposed 226.59 138,220.57 Form 4, filing 0001388658-20-000244
2020-10-01 iRhythm Technologies, Inc.
IRTC 		S, Open-market sale 556 disposed 235.11 130,718.99 Form 4, filing 0001388658-20-000244
2020-10-01 iRhythm Technologies, Inc.
IRTC 		S, Open-market sale 8 disposed 231.20 1,849.60 Form 4, filing 0001388658-20-000244
2020-08-11 iRhythm Technologies, Inc.
IRTC 		S, Open-market sale 2,335 disposed 183.87 429,336.22 Form 4, filing 0001388658-20-000188
2020-08-11 iRhythm Technologies, Inc.
IRTC 		S, Open-market sale 1,586 disposed 182.96 290,177.89 Form 4, filing 0001388658-20-000188
2020-08-11 iRhythm Technologies, Inc.
IRTC 		S, Open-market sale 436 disposed 181.63 79,190.29 Form 4, filing 0001388658-20-000188
2020-08-11 iRhythm Technologies, Inc.
IRTC 		S, Open-market sale 360 disposed 184.96 66,586.90 Form 4, filing 0001388658-20-000188
2020-08-11 iRhythm Technologies, Inc.
IRTC 		S, Open-market sale 243 disposed 187.70 45,611.10 Form 4, filing 0001388658-20-000188
2020-08-11 iRhythm Technologies, Inc.
IRTC 		S, Open-market sale 40 disposed 185.62 7,424.80 Form 4, filing 0001388658-20-000188

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.

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Codes on this page
S, Open-market sale
Open-market sale

Every value is as reported on the Form 4. A price the filing did not report is marked Not reported and no value is computed from it. Codes outside the open market, drawn in grey behind a dashed rule, are compensation and administrative machinery rather than a decision to trade at the prevailing price.

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 23
  • 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 Mark J., insider transactions. Retrieved 2026-08-21 from https://ebomi.com/insider/0001769845

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.