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Who

Wen Hsuan Hsieh

Director

Company insider

Files Form 4 as: Director, Ambiq Micro; Director, Amprius Technologies; Director, Desktop Metal; Director, AEye; Director and 10% owner, Movella Holdings.

In numbers

Trades disclosed
43
Buys
0
Sells
4
Bought
$0
Sold
$18.2M
Companies
5
Companies where not an officer
5
First trade
9 Dec 2020
Last trade
8 Jun 2026
Last filed
10 Jun 2026

Companies traded

Everywhere else they filed: board seats, 10% stakes, other companies
AMBQ Ambiq MicroDirector · Semiconductors · last 8 Jun 20260 buys · 0 sells
AMPX Amprius TechnologiesDirector · Electronic Components & EMS · last 12 Mar 20260 buys · 1 sell
Desktop MetalDirector · last 2 Apr 20250 buys · 2 sells
LIDR AEyeDirector · Auto Parts & Dealers · last 14 Aug 20230 buys · 1 sell
Movella HoldingsDirector, 10% owner · last 2 May 20230 buys · 0 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
10Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
8 Jun 2026filed 10 Jun 2026AMBQ Ambiq MicroSemiconductorsSEC FORM 4 Code A—4,957 at $0.00filing
8 Jun 2026filed 10 Jun 2026AMBQ Ambiq MicroSemiconductorsSEC FORM 4 Code A—4,957 at $0.00filing
12 Mar 2026filed 13 Mar 2026AMPX Amprius TechnologiesElectronic Components & EMSSEC FORM 4 Code M$705K270,251 at $2.61filing
12 Mar 2026filed 13 Mar 2026AMPX Amprius TechnologiesElectronic Components & EMSSEC FORM 4 Sold$5.2M282,500 at $18.55filing
12 Mar 2026filed 13 Mar 2026AMPX Amprius TechnologiesElectronic Components & EMSSEC FORM 4 Sold$2.4M130,646 at $18.22filing
12 Mar 2026filed 13 Mar 2026AMPX Amprius Technologiesoption or derivative · Electronic Components & EMSSEC FORM 4 Code M$705K270,251 at $2.61filing
12 Mar 2026filed 13 Mar 2026AMPX Amprius Technologiesoption or derivative · Electronic Components & EMSSEC FORM 4 Code M$705K270,251 at $2.61filing
12 Mar 2026filed 13 Mar 2026AMPX Amprius TechnologiesElectronic Components & EMSSEC FORM 4 Code M$705K270,251 at $2.61filing
12 Mar 2026filed 13 Mar 2026AMPX Amprius TechnologiesElectronic Components & EMSSEC FORM 4 Sold$5.2M282,500 at $18.55filing
12 Mar 2026filed 13 Mar 2026AMPX Amprius TechnologiesElectronic Components & EMSSEC FORM 4 Sold$2.4M130,646 at $18.22filing
18 Feb 2026filed 20 Feb 2026AMBQ Ambiq MicroSemiconductorsSEC FORM 4 Code M$3.0M238,931 at $12.60filing
18 Feb 2026filed 20 Feb 2026AMBQ Ambiq Microoption or derivative · SemiconductorsSEC FORM 4 Code M—238,931 at $0.00filing
18 Feb 2026filed 20 Feb 2026AMBQ Ambiq Microoption or derivative · SemiconductorsSEC FORM 4 Code M—238,931 at $0.00filing
18 Feb 2026filed 20 Feb 2026AMBQ Ambiq MicroSemiconductorsSEC FORM 4 Code M$3.0M238,931 at $12.60filing
31 Jul 2025filed 31 Jul 2025AMBQ Ambiq Microoption or derivative · SemiconductorsSEC FORM 4 Code C—394,989 at $0.00filing
31 Jul 2025filed 31 Jul 2025AMBQ Ambiq MicroSemiconductorsSEC FORM 4 Code C—394,989filing
13 Jun 2025filed 17 Jun 2025AMPX Amprius TechnologiesElectronic Components & EMSSEC FORM 4 Code A—44,444 at $0.00filing
2 Apr 2025filed 4 Apr 2025Desktop Metaloption or derivativeSEC FORM 4 Code M—28,571filing
2 Apr 2025filed 4 Apr 2025Desktop MetalSEC FORM 4 Code M—28,571filing
2 Apr 2025filed 4 Apr 2025Desktop MetalSEC FORM 4 Code D—42,538filing

News

No headline names them, or the companies they trade most, lately.

Sectors

Technology1
Consumer Discretionary1
Not placed2

Buys in green, sells in red, by the company’s sector.

Related people

Scott McLean HansonChief Technology Officer · Chief Technology Officer at Ambiq Micro, filing Form 4 there in the last year
Fumihide EsakaChief Executive Officer · Chief Executive Officer at Ambiq Micro, filing Form 4 there in the last year
Sean Chihhsiang ChenPresident and COO · President and COO at Ambiq Micro, filing Form 4 there in the last year
Jeffrey G. WinzelerChief Financial Officer · Chief Financial Officer at Ambiq Micro, filing Form 4 there in the last year
Ker ZhangDirector · Director at Ambiq Micro, filing Form 4 there in the last year
Matthew FischChief Executive Officer · Also traded LIDR in the last 90 days
Thomas M. StepienChief Executive Officer · Also traded AMPX in the last 90 days
Constantin Ionel StefanChief Technology Officer · Also traded AMPX in the last 90 days