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Michelle Brennan

CIK 1827353 · Interim CEO · last filed 2026-06-12

Michelle Brennan is an Interim CEO who has filed 21 SEC Form 4 insider transactions across 3 companies since 2020. Across all open-market trades the lifetime net is +$138.1K, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $1.9M 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

$1.89M

Companies

3

Total Filings

21

Lifetime Open-Market Net

$138.1K

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 Interim CEO 8,543 $179.95 $1.54M $30.6K 8 2026-05-05
CAH Director 8,086 $233.55 $1.89M $42.2K 6 2025-11-06
Coupa Software Inc (COUP) Delisted Director 0 $80.97 $0 $65.4K 6 2023-02-28

Recent Filings

21 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
2026-06-12 — Disp (D) −9,309 -$1.68M
2026-05-05 MASIMO CORP (MASI) Delisted Mixed +1,225 $0 EDGAR
2025-11-06 CAH Grant (A) +1,067 $0 EDGAR
2025-08-14 MASIMO CORP (MASI) Delisted Buy (P) +200 $30.6K EDGAR
2025-08-11 MASIMO CORP (MASI) Delisted Grant (A) — $0 EDGAR
2025-05-01 MASIMO CORP (MASI) Delisted Mixed +1,790 $0 EDGAR
2025-02-14 MASIMO CORP (MASI) Delisted Mixed +4,100 -$864.5K EDGAR
2024-11-13 MASIMO CORP (MASI) Delisted Grant (A) — $0 EDGAR
2024-11-07 CAH Grant (A) +1,730 $0 EDGAR
2024-09-23 MASIMO CORP (MASI) Delisted Mixed +1,228 $0 EDGAR
Showing 1–10 of 21
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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.