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Donghyun Thomas Hwang

CIK 1480330 · SVP, Global Sales · last filed 2026-06-29

Donghyun Thomas Hwang is a SVP, Global Sales who has filed 137 SEC Form 4 insider transactions across 2 companies since 2010. The most recent filing shows the insider sold $1.0M of MTSI on Jun 29, 2026. Across all open-market trades the lifetime net is −$24.7M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $8.2M 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

$8.22M

Companies

2

Total Filings

137

Lifetime Open-Market Net

-$24.71M

Filer Profile

Reported Address
100 CHELMSFORD STREET
LOWELL, MA 01851
Formerly Known As
Hwang Dong Hyun (2010–2015)
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

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
MTSI SVP, Global Sales 30,547 $268.95 $8.22M -$22.33M 93 2026-06-29
HITTITE MICROWAVE CORP (HITT) Delisted Vice President of Sales 28,882 — — -$2.38M 29 2014-03-11

Recent Filings

137 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
2026-06-29 MTSI Sell (S) −2,620 -$1.01M EDGAR
2026-05-20 MTSI Mixed −2,510 -$924.1K EDGAR
2026-05-04 MTSI Sell (S) −3,718 -$1.03M EDGAR
2026-04-30 MTSI Notice (144) −8,933 -$2.41M EDGAR
2026-02-04 MTSI Sell (S) −5,274 -$1.19M EDGAR
2025-12-08 MTSI Sell (S) −4,372 -$811.6K EDGAR
2025-11-21 MTSI Mixed −5,289 -$610.4K EDGAR
2025-11-19 MTSI Notice (144) −13,435 -$2.13M EDGAR
2025-11-18 MTSI Grant (A) +83 $8.7K EDGAR
2025-11-10 MTSI Mixed +21,003 -$2.94M EDGAR
Showing 1–10 of 137
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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.