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THOMAS P MAC MAHON

CIK 1168580 · last filed 2022-06-01

THOMAS P MAC MAHON is a corporate insider who has filed 94 SEC Form 4 insider transactions across 4 companies since 2007. Across all open-market trades the lifetime net is −$144.0M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $10.7M 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

$10.65M

Companies

4

Total Filings

94

Lifetime Open-Market Net

-$144.01M

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
Ortho Clinical Diagnostics Holdings plc (OCDX) Delisted Director 141,853 $17.63 $2.50M $0 2 2021-12-17
Express Scripts Holding Co. (ESRX) Delisted Director 0 — — -$6.61M 24 2018-12-21
PharMerica CORP (PMC) Delisted Director 58,606 — — -$153.9K 13 2016-06-21
LH Director 37,594 $283.36 $10.65M -$137.24M 54 2012-09-10

Recent Filings

94 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
2022-06-01 — Disp (D) −141,853 $0
2021-12-17 Ortho Clinical Diagnostics Holdings plc (OCDX) Delisted Gift (G) — $0 EDGAR
2021-05-05 Ortho Clinical Diagnostics Holdings plc (OCDX) Delisted Grant (A) +2,600 $0 EDGAR
2018-12-21 Express Scripts Holding Co. (ESRX) Delisted Disp (D) −59,628 $0 EDGAR
2018-11-09 Express Scripts Holding Co. (ESRX) Delisted Mixed −5,234 -$520.8K EDGAR
2018-05-14 Express Scripts Holding Co. (ESRX) Delisted Grant (A) +2,818 $0 EDGAR
2018-04-30 Express Scripts Holding Co. (ESRX) Delisted Exer (M) +7,466 $430.0K EDGAR
2017-05-15 Express Scripts Holding Co. (ESRX) Delisted Grant (A) +1,648 $0 EDGAR
2017-05-09 Express Scripts Holding Co. (ESRX) Delisted Mixed +1,349 -$43 EDGAR
2016-06-21 PharMerica CORP (PMC) Delisted Grant (A) +5,167 $0 EDGAR
Showing 1–10 of 94
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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.