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Ian T Lowitt

CIK 1379623 · Chief Executive Officer · last filed 2026-07-15

Ian T Lowitt is a Chief Executive Officer who has filed 10 SEC Form 4 insider transactions across 2 companies since 2007. The most recent filing shows the insider sold $2.4M of MRX on Jul 15, 2026. Across all open-market trades the lifetime net is −$4.7M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $179.3M 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

$179.28M

Companies

2

Total Filings

10

Lifetime Open-Market Net

-$4.71M

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
MRX Chief Executive Officer 2,794,216 $64.16 $179.28M -$4.71M 3 2026-07-15
LEHMAN BROTHERS HOLDINGS INC (LEH) Delisted Co-CAO 20,945 — — $0 3 2008-02-12

Recent Filings

10 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
2026-07-15 MRX Sell (S) −37,142 -$2.39M EDGAR
2026-07-13 MRX Notice (144) −37,142 -$2.45M EDGAR
2026-06-16 MRX Sell (S) −37,143 -$2.32M EDGAR
2026-06-12 MRX Notice (144) −37,143 -$2.35M EDGAR
2026-05-27 MRX Tax (F) −39,478 -$2.15M EDGAR
2025-06-23 MRX Notice (144) −210,000 -$8.22M EDGAR
2008-09-19 — Sell (S) −20,945 -$2.9K
2008-02-12 LEHMAN BROTHERS HOLDINGS INC (LEH) Delisted Grant (A) — $0 EDGAR
2007-12-11 LEHMAN BROTHERS HOLDINGS INC (LEH) Delisted Grant (A) — $0 EDGAR
2007-12-04 LEHMAN BROTHERS HOLDINGS INC (LEH) Delisted Mixed +6,243 -$309.1K EDGAR
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.