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Who

Shuo Zhang

Director

Company insider

Files Form 4 as: Director, PDF Solutions.

In numbers

Trades disclosed
15
Buys
0
Sells
5
Bought
$0
Sold
$789K
Companies
1
Companies where not an officer
1
First trade
1 Aug 2019
Last trade
12 Aug 2026
Last filed
12 Aug 2026

Companies traded

Everywhere else they filed: board seats, 10% stakes, other companies
PDFS PDF SolutionsDirector · Software · last 12 Aug 20260 buys · 5 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
12 Aug 2026filed 12 Aug 2026PDFS PDF SolutionsSoftwareSEC FORM 4 Sold$77K1,501 at $51.47filing
12 Aug 2026filed 12 Aug 2026PDFS PDF SolutionsSoftwareSEC FORM 4 Sold$77K1,501 at $51.47filing
1 Jul 2026filed 2 Jul 2026PDFS PDF SolutionsSoftwareSEC FORM 4 Code A—2,689filing
1 Jul 2026filed 2 Jul 2026PDFS PDF SolutionsSoftwareSEC FORM 4 Code A—2,689filing
1 Jul 2025filed 2 Jul 2025PDFS PDF SolutionsSoftwareSEC FORM 4 Code A—7,429filing
1 Jul 2024filed 2 Jul 2024PDFS PDF SolutionsSoftwareSEC FORM 4 Code A—4,382filing
3 Jun 2024filed 4 Jun 2024PDFS PDF SolutionsSoftwareSEC FORM 4 Sold$191K5,500 at $34.66filing
18 Aug 2023filed 21 Aug 2023PDFS PDF SolutionsSoftwareSEC FORM 4 Sold$103K3,047 at $33.75filing
1 Jul 2023filed 5 Jul 2023PDFS PDF SolutionsSoftwareSEC FORM 4 Code A—3,354filing
16 Nov 2022filed 17 Nov 2022PDFS PDF SolutionsSoftwareSEC FORM 4 Sold$60K2,000 at $29.84filing
1 Jul 2022filed 5 Jul 2022PDFS PDF SolutionsSoftwareSEC FORM 4 Code A—7,212filing
15 Mar 2022filed 17 Mar 2022PDFS PDF SolutionsSoftwareSEC FORM 4 Sold$281K11,017 at $25.50filing
1 Jul 2021filed 2 Jul 2021PDFS PDF SolutionsSoftwareSEC FORM 4 Code A—4,688filing
1 Aug 2020filed 4 Aug 2020PDFS PDF SolutionsSoftwareSEC FORM 4 Code A—4,688 at $0.00filing
1 Aug 2019filed 2 Aug 2019PDFS PDF SolutionsSoftwareSEC FORM 4 Code A—12,003 at $0.00filing

Sectors

Technology5

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

Related people

John Kachig KibarianPresident and CEO · President and CEO at Pdf Solutions, filing Form 4 there in the last year
Kimon MichaelsEVP of Products and Solutions · EVP of Products and Solutions at Pdf Solutions, filing Form 4 there in the last year
Adnan RazaEVP, Finance and CFO · EVP, Finance and CFO at Pdf Solutions, filing Form 4 there in the last year
Andrzej StrojwasChief Technology Officer · Chief Technology Officer at Pdf Solutions, filing Form 4 there in the last year
Chi-Foon ChanDirector · Director at Pdf Solutions, filing Form 4 there in the last year
Donald J. TrumpPresident · Also traded PDFS in the last 90 days