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Thomas Samuel McClenahan

CIK 1575205 · EVP, GEN COUNSEL & CORP SEC · last filed 2024-03-01

Thomas Samuel McClenahan is an EVP, GEN COUNSEL & CORP SEC who has filed 36 SEC Form 4 insider transactions across 1 company since 2013. The most recent filing, for MASI, was dated Apr 24, 2025. Across all open-market trades the lifetime net is −$11.5M, making them a net seller over the disclosed history.

"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

$0

Companies

1

Total Filings

36

Lifetime Open-Market Net

-$11.50M

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
MASIMO CORP (MASI) Delisted EVP, GEN COUNSEL & CORP SEC 37,141 $179.95 $6.68M -$11.50M 34 2024-03-01

Recent Filings

36 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
2025-04-24 MASIMO CORP (MASI) Delisted Notice (144) −26,300 -$4.29M EDGAR
2025-03-03 MASIMO CORP (MASI) Delisted Notice (144) −49,000 -$9.37M EDGAR
2024-03-01 MASIMO CORP (MASI) Delisted Mixed +610 -$50.7K EDGAR
2023-03-07 MASIMO CORP (MASI) Delisted Mixed +2,348 -$486.7K EDGAR
2022-02-24 MASIMO CORP (MASI) Delisted Grant (A) — $0 EDGAR
2022-02-16 MASIMO CORP (MASI) Delisted Grant (A) +9,302 $0 EDGAR
2022-01-04 MASIMO CORP (MASI) Delisted Mixed +916 -$317.4K EDGAR
2021-05-13 MASIMO CORP (MASI) Delisted Buy (P) +500 $107.2K EDGAR
2021-05-04 MASIMO CORP (MASI) Delisted Buy (P) +1,000 $231.6K EDGAR
2021-03-02 MASIMO CORP (MASI) Delisted Grant (A) — $0 EDGAR
Showing 1–10 of 36
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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.