PDFS

PDF Solutions, Inc. PDFS

Individual Beneficiary

Name of reporting person Citizenship or organization Sole voting power Shared voting power Sole dispositive power Shared dispositive power Amount beneficially owned Percent of class Accepted date
The Vanguard Group Pennsylvania 0 54649 3006975 82694 3089669 8.08 % 13/02/2024
BlackRock, Inc. Delaware 4788077 0 4840071 0 4840071 12.7 % 23/01/2024
Invesco Ltd. Bermuda 708429 0 721613 0 721613 1.9 % 11/12/2023
The Vanguard Group Pennsylvania For 0 50933 2178410 74881 2253291 6.03 % 09/02/2023
Invesco Ltd. Bermuda 3236332 0 3250698 0 3250698 8.7 % 02/02/2023
T. ROWE PRICE ASSOCIATES, INC. Maryland 1990 0 1990 0 1990 0 % 14/02/2022
T. ROWE PRICE ASSOCIATES, INC. Maryland 1990 0 1990 0 1990 0 % 14/02/2022
Invesco Ltd. Bermuda 3246613 0 3260297 0 3260297 8.7 % 10/02/2022
The Vanguard Group Pennsylvania For 0 24654 2047488 49464 2096952 5.62 % 10/02/2022
BlackRock, Inc. Delaware 4664047 0 4723594 0 4723594 12.6 % 28/01/2022
T. ROWE PRICE ASSOCIATES, INC. Maryland 529394 0 2300783 0 2300783 6.2 % 16/02/2021
T. ROWE PRICE ASSOCIATES, INC. Maryland 529394 0 2300783 0 2300783 6.2 % 16/02/2021
JOHN KACHIG KIBARIAN United States Citizen 2512474 0 2512474 0 2512474 0 % 16/02/2021
S Dimensional Fund Advisors LP Delaware 1123955 0 1196674 0 1196674 3.3 % 12/02/2021
Invesco Ltd. Bermuda 3192280 0 3204770 0 3204770 8.7 % 12/02/2021
The Vanguard Group Pennsylvania For 0 64931 2061801 87705 2149506 5.87 % 10/02/2021
BlackRock, Inc. Delaware 4457203 0 4509768 0 4509768 12.3 % 26/01/2021
Advantest America, Inc. Delaware 3306924 0 3306924 0 3306924 9.1 % 06/08/2020
Advantest Corporation Japan 33069241 0 33069242 0 3306924 9.1 % 06/08/2020
Advantest Corporation Japan 33069241 0 33069242 0 3306924 9.1 % 06/08/2020
Advantest America, Inc. Delaware 3306924 0 3306924 0 3306924 9.1 % 06/08/2020
Invesco Ltd. Bermuda 3744313 0 3756400 0 3756400 11.5 % 10/06/2020
Cowen Prime Advisors, a division of Cowen Prime Services LLC Delaware 0 0 0 1624378 1624378 5 % 04/06/2020
Cowen Prime Advisors, a division of Cowen Prime Services LLC Delaware 0 0 0 1624378 1624378 5 % 04/06/2020
T. ROWE PRICE ASSOCIATES, INC. Maryland 498702 0 2568922 0 2568922 7.9 % 14/02/2020
T. ROWE PRICE ASSOCIATES, INC. Maryland 498702 0 2568922 0 2568922 7.9 % 14/02/2020
KIMON MICHAELS United States 1412276 185035 1412276 185035 1597311 4.91 % 14/02/2020
JOHN KACHIG KIBARIAN United States Citizen 2512474 0 2512474 0 2512474 0 % 14/02/2020
Dimensional Fund Advisors LP Delaware 1611651 0 1704536 0 1704536 5.27 % 12/02/2020
The Vanguard Group Pennsylvania 31030 2000 1904608 28305 1932913 5.97 % 12/02/2020
BlackRock, Inc. Delaware 4352833 0 4431669 0 4431669 13.7 % 04/02/2020
T. ROWE PRICE ASSOCIATES, INC. Maryland 548703 0 2953303 0 2953303 9.1 % 14/02/2019
JOHN KACHIG KIBARIAN United States Citizen 2512474 0 2512474 0 2512474 0 % 13/02/2019
KIMON MICHAELS United States 1412276 202934 1412276 202934 1615210 4.99 % 13/02/2019
FMR LLC Delaware 0 0 0 0 0 0 % 13/02/2019
Abigail P. Johnson United States of America 0 0 0 0 0 0 % 13/02/2019
The Vanguard Group Pennsylvania 28496 2000 1823841 28996 1852837 5.74 % 11/02/2019
Dimensional Fund Advisors LP Delaware 1837765 0 1948829 0 1948829 6.04 % 08/02/2019
BlackRock, Inc. Delaware 3990425 0 4061916 0 4061916 12.6 % 31/01/2019
OppenheimerFunds, Inc. Colorado 0 3005359 0 3005359 3005359 9.31 % 18/01/2019
T. ROWE PRICE ASSOCIATES, INC. Maryland 468992 0 3022512 0 3022512 9.4 % 14/02/2018
T. ROWE PRICE ASSOCIATES, INC. Maryland 468992 0 3022512 0 3022512 9.4 % 14/02/2018
Cardinal Capital Management, LLC United States 1203683 0 1575049 0 1575049 4.9 % 13/02/2018
FMR LLC Delaware 0 0 2250722 0 2250722 7.045 % 13/02/2018
Abigail P. Johnson United States of America 0 0 2250722 0 2250722 7.045 % 13/02/2018
FMR LLC Delaware 0 0 2250722 0 2250722 7.045 % 13/02/2018
Abigail P. Johnson United States of America 0 0 2250722 0 2250722 7.045 % 13/02/2018
JOHN KACHIG KIBARIAN United States Citizen 2512474 0 2512474 0 2512474 0 % 12/02/2018
KIMON MICHAELS United States 1412276 202826 1412276 202826 1615102 5.029 % 12/02/2018
BlackRock, Inc. Delaware 3480068 0 3541188 0 3541188 11.1 % 19/01/2018
BlackRock, Inc. Delaware 3495862 0 3562960 0 3562960 11.2 % 07/12/2017
KIMON MICHAELS United States 1412276 202516 1412276 202516 1614792 5.068 % 14/02/2017
Cardinal Capital Management, LLC United States 1402806 0 2162922 0 2162922 6.9 % 13/02/2017
T. ROWE PRICE ASSOCIATES, INC. Maryland 366184 0 2557115 0 2557115 8.1 % 07/02/2017
BlackRock, Inc. Delaware 1685350 0 1735638 0 1735638 5.5 % 30/01/2017
BlackRock, Inc. Delaware 1480946 0 1530057 0 1530057 4.9 % 10/03/2016
Cardinal Capital Management, LLC United States 1587195 0 2827714 0 2827714 9 % 12/02/2016
Cardinal Capital Management, LLC United States 1587195 0 2827714 0 2827714 9 % 12/02/2016
T. ROWE PRICE ASSOCIATES, INC. MARYLAND 0 0 0 0 1888181 6 % 10/02/2016
TimesSquare Capital Management, LLC Delaware 0 0 0 0 0 0 % 10/02/2016
TimesSquare Capital Management, LLC Delaware 0 0 0 0 0 0 % 10/02/2016
KIMON MICHAELS United States 1412276 180840 1412276 180840 1593116 0 % 09/02/2016
BlackRock, Inc. Delaware 1523899 0 1575673 0 1575673 5 % 28/01/2016
BlackRock, Inc. Delaware 1510887 0 1562912 0 1562912 4.9 % 09/09/2015
Abigail P. Johnson United States of America 0 0 460601 0 460601 1.464 % 11/05/2015
FMR LLC Delaware 460601 0 460601 0 460601 1.464 % 11/05/2015
FMR LLC Delaware 460601 0 460601 0 460601 1.464 % 11/05/2015
Edward C. Johnson 3d United States of America 0 0 460601 0 460601 1.464 % 11/05/2015
Abigail P. Johnson United States of America 0 0 460601 0 460601 1.464 % 11/05/2015
Edward C. Johnson 3d United States of America 0 0 460601 0 460601 1.464 % 11/05/2015
Shannon River Fund Management LLC Delaware 0 0 0 0 0 0 % 17/02/2015
Doonbeg Master Fund, L.P. Cayman Islands 0 0 0 0 0 0 % 17/02/2015
Shannon River Fund Management LLC Delaware 0 0 0 0 0 0 % 17/02/2015
Doonbeg Master Fund, L.P. Cayman Islands 0 0 0 0 0 0 % 17/02/2015
Shannon River Master Fund, L.P. Cayman Islands 0 0 0 0 0 0 % 17/02/2015
Shannon River Capital Management LLC Delaware 0 0 0 0 0 0 % 17/02/2015
Shannon River Global Management, LLC Delaware 0 0 0 0 0 0 % 17/02/2015
Doonbeg Global Management, LLC Delaware 0 0 0 0 0 0 % 17/02/2015
Shannon River Partners LP Delaware 0 0 0 0 0 0 % 17/02/2015
Shannon River Partners LP Delaware 0 0 0 0 0 0 % 17/02/2015
Shannon River Master Fund, L.P. Cayman Islands 0 0 0 0 0 0 % 17/02/2015
Spencer Waxman United States 0 0 0 0 0 0 % 17/02/2015
Spencer Waxman United States 0 0 0 0 0 0 % 17/02/2015
Doonbeg Global Management, LLC Delaware 0 0 0 0 0 0 % 17/02/2015
Shannon River Global Management, LLC Delaware 0 0 0 0 0 0 % 17/02/2015
Shannon River Capital Management LLC Delaware 0 0 0 0 0 0 % 17/02/2015
Edward C. Johnson 3d United States of America 0 0 2050626 0 2050626 6.62 % 13/02/2015
FMR LLC Delaware 461701 0 2050626 0 2050626 6.62 % 13/02/2015
Abigail P. Johnson United States of America 0 0 2050626 0 2050626 6.62 % 13/02/2015
TimesSquare Capital Management, LLC Delaware 1515923 0 1561573 0 1561573 5 % 11/02/2015
TimesSquare Capital Management, LLC Delaware 1515923 0 1561573 0 1561573 5 % 11/02/2015
T. ROWE PRICE ASSOCIATES, INC. MARYLAND 0 0 0 0 2072161 6.6 % 11/02/2015
Concept Asset Management, a division of Concept Capital Markets, LLC Delaware 0 0 0 1525190 1525190 4.92 % 10/02/2015
BlackRock, Inc. Delaware 1722658 0 1786977 0 1786977 5.8 % 02/02/2015
KIMON MICHAELS United States 1412276 174224 1412276 174224 1586500 0 % 26/01/2015
Concept Asset Management, a division of Concept Capital Markets, LLC Delaware 0 0 1678475 0 1678475 5.49 % 15/12/2014
Concept Asset Management, a division of Concept Capital Markets, LLC Delaware 0 0 1678475 0 1678475 5.49 % 15/12/2014
Concept Asset Management, a division of Concept Capital Markets, LLC Delaware 0 0 3686653 0 3686653 12.91 % 15/12/2014
Concept Asset Management, a division of Concept Capital Markets, LLC Delaware 0 0 3686653 0 3686653 12.91 % 15/12/2014
Shannon River Partners LP Delaware 0 72545 0 72545 72545 0.24 % 11/04/2014
Shannon River Global Management, LLC Delaware 0 773665 0 773665 773665 2.53 % 11/04/2014
Doonbeg Global Management, LLC Delaware 0 852575 0 852575 852575 2.79 % 11/04/2014
Spencer Waxman United States 0 1698785 0 1698785 1698785 5.55 % 11/04/2014
Spencer Waxman United States 0 1698785 0 1698785 1698785 5.55 % 11/04/2014
Doonbeg Global Management, LLC Delaware 0 852575 0 852575 852575 2.79 % 11/04/2014
Shannon River Global Management, LLC Delaware 0 773665 0 773665 773665 2.53 % 11/04/2014
Shannon River Capital Management LLC Delaware 0 72545 0 72545 72545 0.24 % 11/04/2014
Shannon River Fund Management LLC Delaware 0 72545 0 72545 72545 0.24 % 11/04/2014
Doonbeg Master Fund, L.P. Cayman Islands 0 852575 0 852575 852575 2.79 % 11/04/2014
Shannon River Master Fund, L.P. Cayman Islands 0 773665 0 773665 773665 2.53 % 11/04/2014
Shannon River Partners LP Delaware 0 72545 0 72545 72545 0.24 % 11/04/2014
Shannon River Capital Management LLC Delaware 0 72545 0 72545 72545 0.24 % 11/04/2014
Shannon River Fund Management LLC Delaware 0 72545 0 72545 72545 0.24 % 11/04/2014
Doonbeg Master Fund, L.P. Cayman Islands 0 852575 0 852575 852575 2.79 % 11/04/2014
Shannon River Master Fund, L.P. Cayman Islands 0 773665 0 773665 773665 2.53 % 11/04/2014
FMR LLC Delaware 636271 0 1789661 0 1789661 5.851 % 10/04/2014
Edward C. Johnson 3d United States of America 0 0 1789661 0 1789661 5.851 % 10/04/2014
FMR LLC Delaware 636271 0 1789661 0 1789661 5.851 % 10/04/2014
Edward C. Johnson 3d United States of America 0 0 1789661 0 1789661 5.851 % 10/04/2014
FMR LLC Delaware 711961 0 3597468 0 3597468 11.918 % 14/02/2014
Edward C. Johnson 3d United States of America 0 0 3597468 0 3597468 11.918 % 14/02/2014
KIMON MICHAELS United States 1412276 120512 1412276 120512 1532788 0 % 12/02/2014
T. ROWE PRICE ASSOCIATES, INC. MARYLAND 0 0 0 0 1836271 6 % 11/02/2014
Samjo Capital, LLC Delaware 0 1336200 0 1336200 1336200 4.4 % 10/02/2014
Samjo Capital, LLC Delaware 0 1336200 0 1336200 1336200 4.4 % 10/02/2014
Samjo Management, LLC Delaware 0 1336200 0 1336200 1336200 4.4 % 10/02/2014
Andrew N. Wiener United States 7400 1336200 7400 1336200 1343600 4.5 % 10/02/2014
Andrew N. Wiener United States 7400 1336200 7400 1336200 1343600 4.5 % 10/02/2014
Samjo Management, LLC Delaware 0 1336200 0 1336200 1336200 4.4 % 10/02/2014
BlackRock, Inc. Delaware 1472172 0 1521287 0 1521287 5 % 30/01/2014
Edward C. Johnson 3d United States of America 0 0 3038025 0 3038025 10.292 % 10/06/2013
FMR LLC Delaware 541955 0 3038025 0 3038025 10.292 % 10/06/2013
Edward C. Johnson 3d United States of America 0 0 3038025 0 3038025 10.292 % 10/06/2013
FMR LLC Delaware 541955 0 3038025 0 3038025 10.292 % 10/06/2013
KIMON MICHAELS United States 1412276 107307 1412276 107307 1519583 5.2 % 07/02/2013
JOHN KACHIG KIBARIAN United States Citizen 2512474 0 2512474 0 2512474 0 % 07/02/2013
T. ROWE PRICE ASSOCIATES, INC. MARYLAND 0 0 0 0 2083301 7.1 % 06/02/2013
Samjo Management, LLC Delaware 0 2250000 0 2250000 2250000 7.7 % 01/02/2013
Samjo Capital, LLC Delaware 0 2250000 0 2250000 2250000 7.7 % 01/02/2013
Samjo Capital, LLC Delaware 0 2250000 0 2250000 2250000 7.7 % 01/02/2013
Samjo Management, LLC Delaware 0 2250000 0 2250000 2250000 7.7 % 01/02/2013
Andrew N. Wiener United States 25000 2250000 25000 2250000 2275000 7.8 % 01/02/2013
Andrew N. Wiener United States 25000 2250000 25000 2250000 2275000 7.8 % 01/02/2013
T. ROWE PRICE ASSOCIATES, INC. MARYLAND 0 0 0 0 2639801 9.3 % 13/02/2012
S BURNHAM ASSET MANAGEMENT CORPORATION Delaware 0 0 0 608491 608491 2.17 % 08/02/2012
S BURNHAM SECURITIES INC. New York 0 0 0 459039 459039 1.64 % 08/02/2012
KIMON MICHAELS United States 1412276 91934 1412276 91934 1504210 5.31 % 07/02/2012
JOHN KACHIG KIBARIAN United States Citizen 2567474 0 2567474 0 2567474 0 % 07/02/2012
Andrew N. Wiener United States 4700 2221000 4700 2221000 2225700 7.9 % 06/02/2012
Samjo Capital, LLC Delaware 0 2221000 0 2221000 2221000 7.9 % 06/02/2012
Samjo Management, LLC Delaware 0 2221000 0 2221000 2221000 7.9 % 06/02/2012
Royce & Associates, LLC New York 0 0 0 0 0 0 % 22/02/2011
Royce & Associates, LLC New York 0 0 0 0 0 0 % 22/02/2011
JOHN KACHIG KIBARIAN United States 2567474 0 2567474 0 2567474 9.29 % 14/02/2011
KIMON MICHAELS United States 1412276 50692 1412276 50692 1462968 5.29 % 14/02/2011
Artis Capital Management, L.P. CA 0 1320000 0 1320000 1320000 4.8 % 14/02/2011
Stuart L. Peterson USA 0 1320000 0 1320000 1320000 4.8 % 14/02/2011
Artis Capital Management, Inc. CA 0 1320000 0 1320000 1320000 4.8 % 14/02/2011
T. ROWE PRICE SMALL CAP STOCK FUND, INC. Maryland 1350000 0 0 0 1350000 4.9 % 11/02/2011
T. ROWE PRICE ASSOCIATES, INC. MARYLAND 239600 0 2700201 0 2700201 9.8 % 11/02/2011
S BURNHAM SECURITIES INC. New York 0 0 0 305500 305500 1.11 % 11/02/2011
S BURNHAM ASSET MANAGEMENT CORPORATION Delaware 0 0 0 2886971 2886971 10.48 % 11/02/2011
Samjo Management, LLC Delaware 0 2005000 0 2005000 2005000 7.3 % 10/01/2011
Samjo Capital, LLC Delaware 0 2005000 0 2005000 2005000 7.3 % 10/01/2011
Samjo Management, LLC Delaware 0 2005000 0 2005000 2005000 7.3 % 10/01/2011
Andrew N. Wiener United States 2700 2005000 2700 2005000 2007700 7.3 % 10/01/2011
Samjo Capital, LLC Delaware 0 2005000 0 2005000 2005000 7.3 % 10/01/2011
Andrew N. Wiener United States 2700 2005000 2700 2005000 2007700 7.3 % 10/01/2011
Edward C. Johnson 3d United States of America 0 0 842858 0 842858 3.105 % 12/10/2010
Edward C. Johnson 3d United States of America 0 0 842858 0 842858 3.105 % 12/10/2010
FMR LLC Delaware 0 0 842858 0 842858 3.105 % 12/10/2010
FMR LLC Delaware 0 0 842858 0 842858 3.105 % 12/10/2010
BURNHAM SECURITIES INC. New York 0 0 0 319500 319500 1.18 % 08/10/2010
BURNHAM SECURITIES INC. New York 0 0 0 319500 319500 1.18 % 08/10/2010
BURNHAM ASSET MANAGEMENT CORPORATION Delaware 0 0 0 2487205 2487205 9.16 % 08/10/2010
BURNHAM ASSET MANAGEMENT CORPORATION Delaware 0 0 0 2487205 2487205 9.16 % 08/10/2010
Wellington Management Company, LLP Massachusetts 0 431347 0 568036 568036 2.1 % 10/08/2010
Wellington Management Company, LLP Massachusetts 0 431347 0 568036 568036 2.1 % 10/08/2010
KIMON MICHAELS United States Citizen 1412276 30516 1412276 30516 1442792 0 % 16/02/2010
JOHN KACHIG KIBARIAN United States Citizen 2567474 0 2567474 0 2567474 0 % 16/02/2010
Artis Capital Management, L.P. CA 0 1844446 0 1844446 1844446 7 % 16/02/2010
Artis Capital Management, Inc. CA 0 1844446 0 1844446 1844446 7 % 16/02/2010
Stuart L. Peterson USA 0 1844446 0 1844446 1844446 7 % 16/02/2010
Stuart L. Peterson USA 0 1844446 0 1844446 1844446 7 % 16/02/2010
Artis Capital Management, L.P. CA 0 1844446 0 1844446 1844446 7 % 16/02/2010
Artis Capital Management, Inc. CA 0 1844446 0 1844446 1844446 7 % 16/02/2010
FMR LLC Delaware 0 0 2230000 0 2230000 8.406 % 16/02/2010
Edward C. Johnson 3d United States of America 0 0 2230000 0 2230000 8.406 % 16/02/2010
S Wellington Management Company, LLP Massachusetts 0 1431300 0 1984800 1984800 7.48 % 12/02/2010

Senat trading

Bureau Date de la transaction Date de réception Type Amount Commentaire

Senat Divulgation

Représentant Date de la transaction Date de divulgation Type Amount District