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Mark J. Day

CIK 1769845 · Chief Technology Officer · last filed 2024-03-05

Mark J. Day is a Chief Technology Officer who has filed 18 SEC Form 4 insider transactions across 1 company since 2020. The most recent filing shows the insider sold $361.0K of IRTC on Mar 5, 2024. Across all open-market trades the lifetime net is −$6.8M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $6.7M across reported positions.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$6.66M

Companies

1

Total Filings

18

Lifetime Open-Market Net

-$6.79M

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
IRTC Chief Technology Officer 61,164 $108.84 $6.66M -$6.79M 18 2024-03-05

Recent Filings

18 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2024-03-05 IRTC Sell (S) −3,248 -$361.0K EDGAR
2024-03-01 IRTC Mixed +6,259 -$179.9K EDGAR
2024-02-29 IRTC Grant (A) +2,621 $0 EDGAR
2023-08-04 IRTC Exer (M) +486 $17.6K EDGAR
2023-03-07 IRTC Sell (S) −2,116 -$248.1K EDGAR
2023-03-01 IRTC Mixed +9,909 -$225.4K EDGAR
2022-03-08 IRTC Sell (S) −2,518 -$334.1K EDGAR
2022-02-17 IRTC Mixed +9,108 -$491.5K EDGAR
2021-03-22 IRTC Grant (A) +2,953 $0 EDGAR
2021-03-03 IRTC Tax (F) −2,518 -$385.1K EDGAR
Showing 1–10 of 18
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Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.