Colour theme
Theme
Sign in
Insider · CIK 0001359049

Lyons Mark Donald

CIK 0001359049 Name as filed on the most recent filing

Filed as Lyons Mark Donald (59)

64 transaction lines · from 59 filings · filed 2009-08-03 to 2018-05-17 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.

64 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
2018-05-15 Arch Capital Group Ltd.
ACGL
S, Open-market sale 12,000 disposed 78.36 940,359.60 Form 4, filing 0001179110-18-006971
2018-03-15 Arch Capital Group Ltd.
ACGL
S, Open-market sale 6,000 disposed 84.16 504,963.00 Form 4, filing 0001179110-18-004458
2018-02-28 Arch Capital Group Ltd.
ACGL
S, Open-market sale 6,000 disposed 89.39 536,331.00 Form 4, filing 0001179110-18-003100
2017-12-11 Arch Capital Group Ltd.
ACGL
S, Open-market sale 5,500 disposed 92.04 506,240.90 Form 4, filing 0001179110-17-015237
2017-09-12 Arch Capital Group Ltd.
ACGL
S, Open-market sale 3,367 disposed 97.30 327,602.37 Form 4, filing 0001179110-17-012237
2017-09-11 Arch Capital Group Ltd.
ACGL
S, Open-market sale 6,600 disposed 97.32 642,310.02 Form 4, filing 0001179110-17-012237
2017-06-12 Arch Capital Group Ltd.
ACGL
S, Open-market sale 8,266 disposed 93.53 773,103.27 Form 4, filing 0001179110-17-008981
2017-03-09 Arch Capital Group Ltd.
ACGL
S, Open-market sale 13,000 disposed 94.43 1,227,553.60 Form 4, filing 0001179110-17-004363
2017-03-02 Arch Capital Group Ltd.
ACGL
S, Open-market sale 5,635 disposed 95.08 535,788.20 Form 4, filing 0001179110-17-003941
2017-02-15 Arch Capital Group Ltd.
ACGL
S, Open-market sale 5,000 disposed 93.09 465,451.00 Form 4, filing 0001179110-17-002618
2016-12-15 Arch Capital Group Ltd.
ACGL
S, Open-market sale 3,500 disposed 87.13 304,945.55 Form 4, filing 0001179110-16-033159
2016-12-02 Arch Capital Group Ltd.
ACGL
S, Open-market sale 6,100 disposed 83.14 507,125.33 Form 4, filing 0001179110-16-032367
2016-10-28 Arch Capital Group Ltd.
ACGL
S, Open-market sale 8,000 disposed 77.22 617,762.40 Form 4, filing 0001179110-16-031028
2016-08-30 Arch Capital Group Ltd.
ACGL
S, Open-market sale 4,812 disposed 80.34 386,605.70 Form 4, filing 0001179110-16-029186
2016-08-17 Arch Capital Group Ltd.
ACGL
S, Open-market sale 8,500 disposed 80.16 681,385.50 Form 4, filing 0001179110-16-028814
2016-06-02 Arch Capital Group Ltd.
ACGL
S, Open-market sale 3,000 disposed 72.55 217,637.10 Form 4, filing 0001179110-16-025956
2016-05-31 Arch Capital Group Ltd.
ACGL
S, Open-market sale 7,000 disposed 71.81 502,656.00 Form 4, filing 0001179110-16-025871
2016-03-15 Arch Capital Group Ltd.
ACGL
S, Open-market sale 3,500 disposed 69.91 244,685.35 Form 4, filing 0001179110-16-021745
2016-02-25 Arch Capital Group Ltd.
ACGL
S, Open-market sale 13,200 disposed 68.95 910,203.36 Form 4, filing 0001179110-16-020199
2016-02-12 Arch Capital Group Ltd.
ACGL
S, Open-market sale 7,500 disposed 67.40 505,473.00 Form 4, filing 0001179110-16-019258
2015-10-30 Arch Capital Group Ltd.
ACGL
S, Open-market sale 11,000 disposed 76.00 836,000.00 Form 4, filing 0001179110-15-014323
2015-09-08 Arch Capital Group Ltd.
ACGL
S, Open-market sale 5,800 disposed 69.20 401,334.48 Form 4, filing 0001179110-15-013177
2015-08-04 Arch Capital Group Ltd.
ACGL
S, Open-market sale 4,000 disposed 72.02 288,092.00 Form 4, filing 0001179110-15-011730
2015-07-31 Arch Capital Group Ltd.
ACGL
S, Open-market sale 5,000 disposed 71.48 357,375.00 Form 4, filing 0001179110-15-011656
2015-05-21 Arch Capital Group Ltd.
ACGL
S, Open-market sale 4,750 disposed 64.94 308,455.98 Form 4, filing 0001179110-15-008564
2015-05-21 Arch Capital Group Ltd.
ACGL
S, Open-market sale 4,390 disposed 64.94 285,098.45 Form 4, filing 0001179110-15-008564
2015-05-05 Arch Capital Group Ltd.
ACGL
S, Open-market sale 8,000 disposed 61.71 493,686.40 Form 4, filing 0001179110-15-007188
2015-03-10 Arch Capital Group Ltd.
ACGL
S, Open-market sale 10,000 disposed 60.01 600,085.00 Form 4, filing 0001179110-15-004804
2015-02-12 Arch Capital Group Ltd.
ACGL
S, Open-market sale 25,000 disposed 59.67 1,491,750.00 Form 4, filing 0001179110-15-002484
2014-11-10 Arch Capital Group Ltd.
ACGL
S, Open-market sale 14,000 disposed 57.16 800,199.40 Form 4, filing 0001179110-14-016411
2014-10-31 Arch Capital Group Ltd.
ACGL
S, Open-market sale 21,000 disposed 56.10 1,178,081.10 Form 4, filing 0001179110-14-015970
2014-09-10 Arch Capital Group Ltd.
ACGL
S, Open-market sale 7,250 disposed 54.50 395,146.02 Form 4, filing 0001179110-14-014052
2014-08-04 Arch Capital Group Ltd.
ACGL
S, Open-market sale 28,500 disposed 54.28 1,546,891.65 Form 4, filing 0001179110-14-012404
2014-06-09 Arch Capital Group Ltd.
ACGL
S, Open-market sale 13,000 disposed 57.71 750,184.50 Form 4, filing 0001179110-14-010157
2014-05-05 Arch Capital Group Ltd.
ACGL
S, Open-market sale 20,500 disposed 56.87 1,165,892.40 Form 4, filing 0001179110-14-007685
2014-03-07 Arch Capital Group Ltd.
ACGL
S, Open-market sale 4,500 disposed 56.90 256,068.45 Form 4, filing 0001179110-14-004889
2014-02-19 Arch Capital Group Ltd.
ACGL
S, Open-market sale 10,000 disposed 55.73 557,299.00 Form 4, filing 0001179110-14-003320
2013-10-30 Arch Capital Group Ltd.
ACGL
S, Open-market sale 25,373 disposed 57.80 1,466,658.35 Form 4, filing 0001179110-13-015860
2013-10-30 Arch Capital Group Ltd.
ACGL
S, Open-market sale 627 disposed 58.05 36,398.98 Form 4, filing 0001179110-13-015860
2013-09-05 Arch Capital Group Ltd.
ACGL
S, Open-market sale 10,000 disposed 53.18 531,799.00 Form 4, filing 0001179110-13-013999
2013-07-31 Arch Capital Group Ltd.
ACGL
S, Open-market sale 10,000 disposed 54.26 542,556.00 Form 4, filing 0001179110-13-012439
2013-06-06 Arch Capital Group Ltd.
ACGL
S, Open-market sale 4,600 disposed 51.03 234,727.88 Form 4, filing 0001179110-13-009926
2013-06-06 Arch Capital Group Ltd.
ACGL
S, Open-market sale 2,400 disposed 50.94 122,258.88 Form 4, filing 0001179110-13-009926
2012-12-14 Arch Capital Group Ltd.
ACGL
S, Open-market sale 5,000 disposed 44.29 221,441.00 Form 4, filing 0001179110-12-017768
2012-09-10 Arch Capital Group Ltd.
ACGL
S, Open-market sale 15,000 disposed 40.01 600,214.50 Form 4, filing 0001179110-12-013851
2012-08-08 Arch Capital Group Ltd.
ACGL
S, Open-market sale 11,000 disposed 39.29 432,138.30 Form 4, filing 0001179110-12-012701
2012-06-12 Arch Capital Group Ltd.
ACGL
S, Open-market sale 5,390 disposed 38.00 204,820.00 Form 4, filing 0001179110-12-010103
2012-06-07 Arch Capital Group Ltd.
ACGL
S, Open-market sale 9,500 disposed 38.36 364,390.55 Form 4, filing 0001179110-12-009936
2012-05-24 Arch Capital Group Ltd.
ACGL
S, Open-market sale 9,500 disposed 38.50 365,750.00 Form 4, filing 0001179110-12-009219
2012-02-16 Arch Capital Group Ltd.
ACGL
S, Open-market sale 25,750 disposed 37.74 971,725.18 Form 4, filing 0001179110-12-002955

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

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 64
  • 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. Lyons Mark Donald, insider transactions. Retrieved 2026-08-21 from https://ebomi.com/insider/0001359049

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.