United States Semiconductors & Semiconductor Equipment

PDF Solutions Inc (PDFS)

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The most recent insider trading activity for PDF Solutions Inc. occurred on May 13, 2025, involving a purchase of shares. Over the preceding months, insiders engaged in both buying and selling activities. As the most recent transaction dates back more than three months, no assessment of current stock performance or price context is provided.
Ticker: PDFS Exchange: NSM
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings
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Top insiders
Trades
Buy 13 May 2025
Value US$837,962.65 | Price 430.75 | Shares 12,867 (+3.6%)
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2025-05-14 2025-05-13 B Purchase
3.1
GUSTAFSON MICHAEL B
Non-Executive Director
12,867 +3.6%
430.75
US$837,963 		12,867 +3.6% 430.75 US$837,963
2025-02-25 2025-02-25 B Purchase
1.1
KIBARIAN JOHN KACHIG

PRESIDENT AND CEO

Executive Director
10,681 +18.0%
172.42
US$1,279,747 		10,681 +18.0% 172.42 US$1,279,747
2025-02-25 2025-02-24 B Purchase
3.1
GUSTAFSON MICHAEL B
Non-Executive Director
43,735 +32.9%
304.92
US$2,326,739 		43,735 +32.9% 304.92 US$2,326,739
2025-02-25 2025-02-24 B Purchase
1.1
KIBARIAN JOHN KACHIG

PRESIDENT AND CEO

Executive Director
34,356 +1.4%
22.80
US$783,317 		34,356 +1.4% 22.80 US$783,317
2024-12-19 2024-12-17 S Sale
2.7
Strojwas Andrzej

CTO

Officer
6,008 -6.4%
30.36
US$182,403 		6,008 -6.4% 30.36 US$182,403
2024-12-19 2024-12-17 S Sale
2.7
Strojwas Andrzej

CTO

Officer
245 -0.3%
31.17
US$7,637 		245 -0.3% 31.17 US$7,637
2024-12-17 2024-12-16 S Sale
2.7
Strojwas Andrzej

CTO

Officer
5,030 -5.0%
30.85
US$155,194 		5,030 -5.0% 30.85 US$155,194
2024-12-16 2024-12-16 PrS Proposed sale
2.7
Strojwas Andrzej

Officer

Officer
8,687
30.85
US$267,994 		8,687 30.85 US$267,994
2024-12-12 2024-12-11 S Sale
2.9
Erba Nancy
Non-Executive Director
2,000 -12.7%
30.81
US$61,620 		2,000 -12.7% 30.81 US$61,620
2024-12-11 2024-12-11 PrS Proposed sale
2.9
NANCY ERBA FAMILY LIVING TRUST

Director

Non-Executive Director
2,000
30.81
US$61,620 		2,000 30.81 US$61,620
2024-11-13 2024-11-13 PrS Proposed sale
2.7
Strojwas Andrzej

Officer

Officer
6,253
33.49
US$209,413 		6,253 33.49 US$209,413
2024-06-04 2024-06-03 S Sale
3.5
Zhang Shuo
Non-Executive Director
5,500 -34.6%
34.66
US$190,630 		5,500 -34.6% 34.66 US$190,630
2024-06-03 2024-06-03 PrS Proposed sale
3.7
Zhang Shuo

Director

Non-Executive Director
5,500
35.43
US$194,865 		5,500 35.43 US$194,865
2024-05-17 2024-05-17 PrS Proposed sale
2.2
Raza Adnan

Officer

Officer
9,647
33.50
US$323,174 		9,647 33.50 US$323,174
2024-05-17 2024-05-17 S Sale
2.2
Raza Adnan

EVP, FINANCE AND CFO

Officer
9,647 -16.7%
33.95
US$327,516 		9,647 -16.7% 33.95 US$327,516
2024-05-17 2024-05-16 S Sale
2.2
Raza Adnan

EVP, FINANCE AND CFO

Officer
16,504 -22.2%
33.82
US$558,165 		16,504 -22.2% 33.82 US$558,165
2024-05-16 2024-05-16 PrS Proposed sale
2.2
Raza Adnan

Officer

Officer
6,161
33.00
US$203,313 		6,161 33.00 US$203,313
2024-05-17 2024-05-15 S Sale
2.2
Raza Adnan

EVP, FINANCE AND CFO

Officer
1,343 -1.8%
34.52
US$46,360 		1,343 -1.8% 34.52 US$46,360
2024-05-15 2024-05-15 PrS Proposed sale
2.2
Raza Adnan

Officer

Officer
11,686
34.50
US$403,167 		11,686 34.50 US$403,167
2024-05-14 2024-05-14 PrS Proposed sale
2.7
Strojwas Andrzej

Officer

Officer
6,253
36.80
US$230,110 		6,253 36.80 US$230,110
2024-02-26 2024-02-26 S Sale
3.1
Li Ye Jane
Non-Executive Director
9,653 -44.3%
33.27
US$321,155 		9,653 -44.3% 33.27 US$321,155
2024-02-26 2024-02-23 S Sale
3.1
Li Ye Jane
Non-Executive Director
1,531 -6.6%
34.00
US$52,054 		1,531 -6.6% 34.00 US$52,054
2024-02-23 2024-02-23 PrS Proposed sale
3.1
Li Revocable Trust

Director

Non-Executive Director
11,184
34.50
US$385,848 		11,184 34.50 US$385,848
2024-02-22 2024-02-21 S Sale
2.0
BRONSON JOSEPH R
Non-Executive Director
15,000 -36.2%
34.63
US$519,450 		15,000 -36.2% 34.63 US$519,450
2024-02-21 2024-02-21 PrS Proposed sale
2.0
BRONSON JOSEPH R

Director

Non-Executive Director
15,000
33.98
US$509,700 		15,000 33.98 US$509,700
2023-12-14 2023-12-13 S Sale
3.1
GUSTAFSON MICHAEL B
Non-Executive Director
4,883 -25.6%
30.86
US$150,689 		4,883 -25.6% 30.86 US$150,689
2023-12-14 2023-12-12 S Sale
3.1
GUSTAFSON MICHAEL B
Non-Executive Director
867 -4.3%
31.29
US$27,128 		867 -4.3% 31.29 US$27,128
2023-12-12 2023-12-12 PrS Proposed sale
3.1
GUSTAFSON MICHAEL B

Officer

Officer
5,750
31.27
US$179,802 		5,750 31.27 US$179,802
2023-11-30 2023-11-29 S Sale
2.9
Erba Nancy
Non-Executive Director
1,800 -10.3%
30.57
US$55,026 		1,800 -10.3% 30.57 US$55,026
2023-11-29 2023-11-29 PrS Proposed sale
2.9
NANCY ERBA TTEE NANCY ERBA FAMILY LIVING TRUST

Director

Non-Executive Director
1,800
30.57
US$55,026 		1,800 30.57 US$55,026
2023-08-21 2023-08-18 S Sale
3.5
Zhang Shuo
Non-Executive Director
3,047 -16.1%
33.75
US$102,836 		3,047 -16.1% 33.75 US$102,836
2023-08-18 2023-08-18 PrS Proposed sale
3.7
Zhang Shuo

Director

Non-Executive Director
3,047
33.75
US$102,836 		3,047 33.75 US$102,836
2023-03-08 2023-03-08 S Sale
2.7
Strojwas Andrzej

CTO

Officer
2,520 -2.8%
38.45
US$96,894 		2,520 -2.8% 38.45 US$96,894
2023-03-06 2023-03-03 S Sale
2.2
Raza Adnan

EVP, FINANCE AND CFO

Officer
15,547 -17.2%
37.64
US$585,189 		15,547 -17.2% 37.64 US$585,189
2023-03-02 2023-02-28 S Sale
3.1
GUSTAFSON MICHAEL B
Non-Executive Director
13,316 -44.5%
37.26
US$496,154 		13,316 -44.5% 37.26 US$496,154
2023-02-24 2023-02-22 S Sale
2.0
BRONSON JOSEPH R
Non-Executive Director
12,500 -24.7%
36.47
US$455,812 		12,500 -24.7% 36.47 US$455,812
2022-12-02 2022-11-30 S Sale
2.7
Strojwas Andrzej

CTO

Officer
19,926 -17.6%
31.00
US$617,628 		19,926 -17.6% 31.00 US$617,628
2022-11-29 2022-11-29 S Sale
2.2
Raza Adnan

EVP, FINANCE AND CFO

Officer
9,224 -8.6%
30.13
US$277,895 		9,224 -8.6% 30.13 US$277,895
2022-11-29 2022-11-25 S Sale
2.2
Raza Adnan

EVP, FINANCE AND CFO

Officer
3,000 -2.7%
30.50
US$91,500 		3,000 -2.7% 30.50 US$91,500
2022-11-17 2022-11-16 S Sale
3.5
Zhang Shuo
Non-Executive Director
2,000 -11.4%
29.84
US$59,680 		2,000 -11.4% 29.84 US$59,680
2022-11-17 2022-11-16 S Sale
3.1
GUSTAFSON MICHAEL B
Non-Executive Director
2,500 -7.7%
30.05
US$75,125 		2,500 -7.7% 30.05 US$75,125
2022-11-17 2022-11-15 S Sale
3.1
GUSTAFSON MICHAEL B
Non-Executive Director
2,500 -7.2%
29.79
US$74,475 		2,500 -7.2% 29.79 US$74,475
2022-06-16 2022-06-16 S Sale
2.2
Raza Adnan

EVP, FINANCE AND CFO

Officer
14,387 -14.3%
19.90
US$286,301 		14,387 -14.3% 19.90 US$286,301
2022-06-16 2022-06-15 S Sale
2.2
Raza Adnan

EVP, FINANCE AND CFO

Officer
10,000 -9.0%
20.62
US$206,200 		10,000 -9.0% 20.62 US$206,200
2022-06-16 2022-06-14 S Sale
2.2
Raza Adnan

EVP, FINANCE AND CFO

Officer
15,000 -11.9%
20.27
US$304,050 		15,000 -11.9% 20.27 US$304,050
2022-06-13 2022-06-13 S Sale
2.2
Raza Adnan

EVP, FINANCE AND CFO

Officer
3,990 -3.1%
21.02
US$83,877 		3,990 -3.1% 21.02 US$83,877
2022-06-13 2022-06-09 S Sale
2.2
Raza Adnan

EVP, FINANCE AND CFO

Officer
2,166 -1.6%
23.47
US$50,835 		2,166 -1.6% 23.47 US$50,835
2022-03-17 2022-03-15 S Sale
3.5
Zhang Shuo
Non-Executive Director
11,017 -51.5%
25.50
US$280,934 		11,017 -51.5% 25.50 US$280,934
2022-02-25 2022-02-23 S Sale
MICHAELS KIMON

EVP OF PRODUCTS AND SOLUTIONS

Executive Director
8,850
0.00
US$0 		8,850 0.00 US$0
2021-11-15 2021-11-12 S Sale
3.1
GUSTAFSON MICHAEL B
Non-Executive Director
3,000 -9.8%
33.00
US$98,992 		3,000 -9.8% 33.00 US$98,992
2020-11-23 2020-11-20 S Sale
1.8
Yin Gerald Zheyao
Non-Executive Director
8,678 -44.0%
21.18
US$183,800 		8,678 -44.0% 21.18 US$183,800
2019-11-07 2019-11-06 S Sale
3.1
GUSTAFSON MICHAEL B
2,214 -9.4%
15.75
US$34,870 		2,214 -9.4% 15.75 US$34,870
2019-11-07 2019-11-05 S Sale
3.1
GUSTAFSON MICHAEL B
386 -1.6%
15.97
US$6,164 		386 -1.6% 15.97 US$6,164
2019-06-14 2019-06-13 S Sale
3.1
GUSTAFSON MICHAEL B
1,000 -4.9%
12.95
US$12,949 		1,000 -4.9% 12.95 US$12,949
2017-08-21 2017-08-18 S Sale LANZA LUCIO
60,000 -15.8%
15.00
US$900,156 		60,000 -15.8% 15.00 US$900,156
2017-06-13 2017-06-09 S Sale LANZA LUCIO
45,000 -10.6%
17.57
US$790,592 		45,000 -10.6% 17.57 US$790,592
2017-05-26 2017-05-24 S Sale LANZA LUCIO Non-Executive Director
30,000 -8.6%
16.50
US$495,096 		30,000 -8.6% 16.50 US$495,096
2017-05-22 2017-05-18 S Sale LANZA LUCIO Non-Executive Director
15,000 -4.5%
16.61
US$249,174 		15,000 -4.5% 16.61 US$249,174
2017-02-21 2017-02-17 S Sale HARTGRING CORNELIS

Vice President, CSS

Officer
981
0.00
US$0 		981 0.00 US$0
2017-02-21 2017-02-16 S Sale HARTGRING CORNELIS

Vice President, CSS

Officer
17,952
0.00
US$0 		17,952 0.00 US$0
2016-12-07 2016-12-06 S Sale Kim KwangH

VP of Business Development

Officer
6,000 -100.0%
21.91
US$131,486 		6,000 -100.0% 21.91 US$131,486
2016-12-05 2016-12-01 S Sale Kim KwangH

VP of Business Development

Officer
6,000 -50.0%
23.00
US$138,015 		6,000 -50.0% 23.00 US$138,015
2016-11-09 2016-11-08 S Sale WALKER GREGORY C

CFO, VP Finance

Officer
6,229 -30.8%
19.85
US$123,646 		6,229 -30.8% 19.85 US$123,646
2016-09-13 2016-09-12 S Sale WALKER GREGORY C

CFO, VP Finance

Officer
2,665 -11.5%
15.90
US$42,376 		2,665 -11.5% 15.90 US$42,376
2016-08-10 2016-08-09 PlS Planned sale WALKER GREGORY C

CFO, VP Finance

Officer
2,382 -9.3%
17.00
US$40,500 		2,382 -9.3% 17.00 US$40,500
2016-08-03 2016-08-03 S Sale HARTGRING CORNELIS

Vice President, CSS

Officer
1,600 -4.2%
16.67
US$26,672 		1,600 -4.2% 16.67 US$26,672
2016-08-03 2016-08-02 PlS Planned sale HARTGRING CORNELIS

Vice President, CSS

Officer
14,031 -26.9%
16.66
US$233,803 		14,031 -26.9% 16.66 US$233,803
2016-06-01 2016-05-27 B Purchase HEINRICHS R STEPHEN Non-Executive Director
6,118 +46.0%
14.24
US$87,095 		6,118 +46.0% 14.24 US$87,095
2015-06-15 2015-06-12 S Sale HEINRICHS R STEPHEN Non-Executive Director
29,093 -60.3%
16.49
US$479,773 		29,093 -60.3% 16.49 US$479,773
2015-06-15 2015-06-11 S Sale HEINRICHS R STEPHEN Non-Executive Director
5,907 -23.5%
16.40
US$96,881 		5,907 -23.5% 16.40 US$96,881
2015-03-06 2015-03-05 S Sale Kim KwangH

VP of Business Development

Officer
18 -100.0%
14,900.00
US$267,902 		18 -100.0% 14,900.00 US$267,902
2015-02-27 2015-02-27 S Sale Kim KwangH

VP of Business Development

Officer
100 -0.7%
18.68
US$1,868 		100 -0.7% 18.68 US$1,868
2015-02-25 2015-02-23 S Sale WALKER GREGORY C

CFO, VP Finance

Officer
117,401 -89.1%
17.52
US$2,056,866 		117,401 -89.1% 17.52 US$2,056,866
2015-02-20 2015-02-20 S Sale WALKER GREGORY C

CFO, VP Finance

Officer
9,006 -38.6%
17.75
US$159,856 		9,006 -38.6% 17.75 US$159,856
2015-02-20 2015-02-19 S Sale WALKER GREGORY C

CFO, VP Finance

Officer
18 -0.1%
12,343.00
US$219,088 		18 -0.1% 12,343.00 US$219,088
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