PDFS

PDF Solutions, Inc.$47.39-0.45 (-0.94%)

Prev Close$47.84·MCap$1.91B·P/E—·Vol286.7K·Yield—

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Buys (12M)

$0.00

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Sells (12M)

$228.0K

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Net Activity

Net Seller

$228.0K

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Active Insiders

last 12 mo

Over the past 12 months, insider activity at PDF Solutions, Inc. (PDFS) has been exclusively selling, with 0 insider purchases totaling $0.00 and 2 insider sales totaling $228.0K. The most recent insider transaction was by Strojwas Andrzej (officer: Chief Technology Officer), who sold $150.7K worth of shares on Sep 1, 2026. PDF Solutions, Inc. operates in the Technology sector, within the Software - Application industry, with a market cap of $1.91B.

PDFS Insider Trading Activity

Date	Insider	Role	Type	Shares	Avg Price	Value	Shares After
Sep 1, 2026	Strojwas Andrzej	officer: Chief Technology Officer	Sell	3,394	$44.41	$150.7K	90,965
Aug 12, 2026	Zhang Shuo	director	Sell	1,501	$51.47	$77.3K	23,380
May 14, 2025	GUSTAFSON MICHAEL B		Buy	7,500	$19.45	$145.9K	30,074+33%
Feb 25, 2025	GUSTAFSON MICHAEL B		Buy	4,000	$23.06	$92.2K	22,574
Feb 25, 2025	KIBARIAN JOHN KACHIG	PRESIDENT AND CEO	Buy	50,000	$22.58	$1.13M	2,522,756
Dec 19, 2024	Strojwas Andrzej	CTO	Sell	6,253	$30.39	$190.0K	94,472
Dec 17, 2024	Strojwas Andrzej	CTO	Sell	5,030	$30.85	$155.2K	94,717
Dec 12, 2024	Erba Nancy		Sell	2,000	$30.81	$61.6K	13,739
Jun 4, 2024	Zhang Shuo		Sell	5,500	$34.66	$190.6K	10,381-35%
May 17, 2024	Raza Adnan	EVP, FINANCE AND CFO	Sell	27,494	$33.90	$932.0K	74,369-27%
Feb 26, 2024	Li Ye Jane		Sell	11,184	$33.37	$373.2K	21,785-34%
Feb 22, 2024	BRONSON JOSEPH R		Sell	15,000	$34.63	$519.5K	26,456-36%
Dec 14, 2023	GUSTAFSON MICHAEL B		Sell	5,750	$30.92	$177.8K	19,075
Nov 30, 2023	Erba Nancy		Sell	1,800	$30.57	$55.0K	15,739
Aug 21, 2023	Zhang Shuo		Sell	3,047	$33.75	$102.8K	15,881
Mar 8, 2023	Strojwas Andrzej	CTO	Sell	2,520	$38.45	$96.9K	87,139
Mar 6, 2023	Raza Adnan	EVP, FINANCE AND CFO	Sell	15,547	$37.64	$585.2K	75,000
Mar 2, 2023	GUSTAFSON MICHAEL B		Sell	13,316	$37.26	$496.2K	16,588-45%
Feb 24, 2023	BRONSON JOSEPH R		Sell	12,500	$36.46	$455.8K	38,102
Dec 2, 2022	Strojwas Andrzej	CTO	Sell	19,926	$31.00	$617.6K	93,384
Nov 29, 2022	Raza Adnan	EVP, FINANCE AND CFO	Sell	12,224	$30.22	$369.4K	106,724
Nov 17, 2022	GUSTAFSON MICHAEL B		Sell	5,000	$29.92	$149.6K	32,404
Nov 17, 2022	Zhang Shuo		Sell	2,000	$29.84	$59.7K	15,574
Jun 16, 2022	Raza Adnan	EVP, FINANCE AND CFO	Sell	39,387	$20.22	$796.6K	110,637-26%
Jun 13, 2022	Raza Adnan	EVP, FINANCE AND CFO	Sell	6,156	$21.88	$134.7K	129,627
Mar 17, 2022	Zhang Shuo		Sell	11,017	$25.50	$280.9K	10,362-52%
Nov 15, 2021	GUSTAFSON MICHAEL B		Sell	3,000	$33.00	$99.0K	27,692

PDFS Insider Buying Activity

The following table shows recent insider purchases of PDF Solutions, Inc. (PDFS) stock reported via SEC Form 4 filings.

Date	Insider	Role	Type	Shares	Avg Price	Value	Shares After
May 14, 2025	GUSTAFSON MICHAEL B		Buy	7,500	$19.45	$145.9K	30,074+33%
Feb 25, 2025	GUSTAFSON MICHAEL B		Buy	4,000	$23.06	$92.2K	22,574
Feb 25, 2025	KIBARIAN JOHN KACHIG	PRESIDENT AND CEO	Buy	50,000	$22.58	$1.13M	2,522,756

PDFS Insider Selling Activity

The following table shows recent insider sales of PDF Solutions, Inc. (PDFS) stock reported via SEC Form 4 filings.

Date	Insider	Role	Type	Shares	Avg Price	Value	Shares After
Sep 1, 2026	Strojwas Andrzej	officer: Chief Technology Officer	Sell	3,394	$44.41	$150.7K	90,965
Aug 12, 2026	Zhang Shuo	director	Sell	1,501	$51.47	$77.3K	23,380
Dec 19, 2024	Strojwas Andrzej	CTO	Sell	6,253	$30.39	$190.0K	94,472
Dec 17, 2024	Strojwas Andrzej	CTO	Sell	5,030	$30.85	$155.2K	94,717
Dec 12, 2024	Erba Nancy		Sell	2,000	$30.81	$61.6K	13,739
Jun 4, 2024	Zhang Shuo		Sell	5,500	$34.66	$190.6K	10,381-35%
May 17, 2024	Raza Adnan	EVP, FINANCE AND CFO	Sell	27,494	$33.90	$932.0K	74,369-27%
Feb 26, 2024	Li Ye Jane		Sell	11,184	$33.37	$373.2K	21,785-34%
Feb 22, 2024	BRONSON JOSEPH R		Sell	15,000	$34.63	$519.5K	26,456-36%
Dec 14, 2023	GUSTAFSON MICHAEL B		Sell	5,750	$30.92	$177.8K	19,075
Nov 30, 2023	Erba Nancy		Sell	1,800	$30.57	$55.0K	15,739
Aug 21, 2023	Zhang Shuo		Sell	3,047	$33.75	$102.8K	15,881
Mar 8, 2023	Strojwas Andrzej	CTO	Sell	2,520	$38.45	$96.9K	87,139
Mar 6, 2023	Raza Adnan	EVP, FINANCE AND CFO	Sell	15,547	$37.64	$585.2K	75,000
Mar 2, 2023	GUSTAFSON MICHAEL B		Sell	13,316	$37.26	$496.2K	16,588-45%
Feb 24, 2023	BRONSON JOSEPH R		Sell	12,500	$36.46	$455.8K	38,102
Dec 2, 2022	Strojwas Andrzej	CTO	Sell	19,926	$31.00	$617.6K	93,384
Nov 29, 2022	Raza Adnan	EVP, FINANCE AND CFO	Sell	12,224	$30.22	$369.4K	106,724
Nov 17, 2022	GUSTAFSON MICHAEL B		Sell	5,000	$29.92	$149.6K	32,404
Nov 17, 2022	Zhang Shuo		Sell	2,000	$29.84	$59.7K	15,574
Jun 16, 2022	Raza Adnan	EVP, FINANCE AND CFO	Sell	39,387	$20.22	$796.6K	110,637-26%
Jun 13, 2022	Raza Adnan	EVP, FINANCE AND CFO	Sell	6,156	$21.88	$134.7K	129,627
Mar 17, 2022	Zhang Shuo		Sell	11,017	$25.50	$280.9K	10,362-52%
Nov 15, 2021	GUSTAFSON MICHAEL B		Sell	3,000	$33.00	$99.0K	27,692