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Chenming Hu

CIK 1316320 · last filed 2025-09-04

Chenming Hu is a corporate insider who has filed 126 SEC Form 4 insider transactions across 7 companies since 2007. The most recent filing, for AMBA, was dated Sep 4, 2025. Across all open-market trades the lifetime net is −$16.8M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $11.3M 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

$11.32M

Companies

7

Total Filings

126

Lifetime Open-Market Net

-$16.84M

Filer Profile

Reported Address
2060 PEBBLE DRIVE
ALAMO, CA 94507
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
AMBA Director 29,516 $62.89 $1.86M -$5.17M 62 2025-09-04
ACMR Director 100,002 $74.44 $7.44M -$8.59M 18 2025-03-19
INPHI Corp (IPHI) Delisted Director 0 $172.27 $0 -$199.5K 16 2021-04-20
FTNT Director 12,900 $156.29 $2.02M $0 14 2020-10-01
SNDK Director 0 $1740.00 $0 -$2.88M 10 2016-05-13
FORM Director — $103.90 — $0 2 2010-05-21
Peraso Inc. (MOSY) Delisted Director — $4.50 — $0 3 2009-07-24

Recent Filings

126 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
2025-09-04 AMBA Grant (A) +2,498 $0 EDGAR
2025-03-19 ACMR Sell (S) −163,308 -$4.90M EDGAR
2025-03-17 ACMR Notice (144) −163,308 -$4.90M EDGAR
2024-08-30 AMBA Grant (A) +3,374 $0 EDGAR
2024-08-20 ACMR Grant (A) — $0 EDGAR
2023-09-01 AMBA Grant (A) +3,218 $0 EDGAR
2023-08-21 ACMR Grant (A) — $0 EDGAR
2023-08-14 ACMR Grant (A) — $0 EDGAR
2023-06-20 AMBA Grant (A) +1,559 $0 EDGAR
2023-03-17 AMBA Exer (M) +779 $0 EDGAR
Showing 1–10 of 126
Page 1 of 13
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.