Pdf Solutions Inc (PDFS) Insider Ownership

Historic Insider Ownership Trends

Data spanning the past 90 days through February 02, 2026 reveals that Pdf Solutions's three principal insider shareholders consist of President And Ceo John Kachig Kibarian (2.52Mn shares), Evp Of Products And Solutions Kimon Michaels (1.54Mn shares), Chief Technology Officer Andrzej Strojwas (89.20K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares Report Date
John Kachig Kibarian President And Ceo 2,522,756 25 Feb, 2025
Kimon Michaels Evp Of Products And Solutions 1,542,072 11 Dec, 2025
Andrzej Strojwas Chief Technology Officer 89,204 05 Jan, 2026
Adnan Raza Evp And Finance And Cfo 71,010 05 Jan, 2026
Nancy Erba 41,122 02 Jul, 2025
Marco Iansiti 39,465 05 Jul, 2022
Joseph R Bronson 38,267 02 Jul, 2025
Michael B Gustafson 37,503 02 Jul, 2025
Ye Jane Li 23,943 02 Jul, 2025
Shuo Zhang 22,192 02 Jul, 2025
Chi-Foon Chan 21,479 02 Jul, 2025

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
01 Jan, 2026 Adnan Raza Common Stock D 5,498 $28.53 71,010 D F
01 Jan, 2026 Andrzej Strojwas Common Stock D 2,762 $28.53 89,204 D F
09 Dec, 2025 Kimon Michaels - - 1,542,072 I
09 Dec, 2025 Kimon Michaels Common Stock D 5,070 $0.00 1,542,072 I G
01 Aug, 2025 Adnan Raza Common Stock A 35,000 - 76,508 D A
01 Aug, 2025 Andrzej Strojwas Common Stock A 8,000 - 91,966 D A
01 Jul, 2025 Kimon Michaels Common Stock D 798 $21.87 28,298 I F
01 Jul, 2025 Joseph R Bronson Common Stock A 7,429 - 38,267 D A
01 Jul, 2025 Michael B Gustafson Common Stock A 7,429 - 37,503 D A
01 Jul, 2025 Michael B Gustafson - - 37,503 D
01 Jul, 2025 Chi-Foon Chan Common Stock A 7,429 - 21,479 D A
01 Jul, 2025 Ye Jane Li Common Stock A 7,429 - 23,943 D A
01 Jul, 2025 Nancy Erba Common Stock A 7,429 - 27,383 D A
01 Jul, 2025 Shuo Zhang Common Stock A 7,429 - 22,192 D A
01 Jul, 2025 Adnan Raza Common Stock D 4,921 $21.87 63,880 D F
01 Jul, 2025 Andrzej Strojwas Common Stock D 2,497 $21.87 83,613 D F
13 May, 2025 Michael B Gustafson Common Stock A 7,500 $19.45 30,074 D P
25 Feb, 2025 John Kachig Kibarian - - 2,522,756 I
25 Feb, 2025 John Kachig Kibarian Common Stock A 15,644 $22.11 2,522,756 I P
24 Feb, 2025 John Kachig Kibarian - - 2,507,112 I