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Yongsam Lee

CIK 1403400 · EVP, CIO · last filed 2021-03-02

Yongsam Lee is an EVP, CIO who has filed 55 SEC Form 4 insider transactions across 1 company since 2008. The most recent filing, for MASI, was dated Mar 2, 2021. Across all open-market trades the lifetime net is −$41.0M, 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

55

Lifetime Open-Market Net

-$41.04M

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, CIO 91,593 $179.95 $16.48M -$41.04M 55 2021-03-02

Recent Filings

55 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
2021-03-02 MASIMO CORP (MASI) Delisted Grant (A) — $0 EDGAR
2021-02-24 MASIMO CORP (MASI) Delisted Grant (A) +14,593 $0 EDGAR
2021-01-06 MASIMO CORP (MASI) Delisted Exer (M) +2,000 $0 EDGAR
2020-10-09 MASIMO CORP (MASI) Delisted Mixed — -$2.12M EDGAR
2020-04-15 MASIMO CORP (MASI) Delisted Mixed — -$3.03M EDGAR
2020-03-16 MASIMO CORP (MASI) Delisted Grant (A) — $0 EDGAR
2020-01-06 MASIMO CORP (MASI) Delisted Exer (M) +2,000 $0 EDGAR
2019-12-18 MASIMO CORP (MASI) Delisted Mixed — -$3.02M EDGAR
2019-11-21 MASIMO CORP (MASI) Delisted Mixed — -$1.58M EDGAR
2019-08-20 MASIMO CORP (MASI) Delisted Mixed — -$134.1K EDGAR
Showing 1–10 of 55
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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.