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See how Context works →On the price, the facts of the public record■Insider buy□Insider sell●Results filed
With an account, also○dividends▲splits◌next earningswith an account
End-of-day prices provided by Twelve Data · One close per session; the series does not update during the trading day.
Latest on record
The most recent facts, as filed.
Up to three of the most recent, checkable facts already loaded on this page, each linked to its source.
- Aug 31, 2026Reported sale · Form 4Andrzej Strojwas, Chief Technology Officer · $150.7KOpen the filing ↗
- Aug 31, 2026Notice of sale · Form 144ANDRZEJ STROJWAS · Officer · $150.7KOpen the filing ↗
- Aug 12, 2026Reported sale · Form 4Shuo Zhang · $77.3KOpen the filing ↗
In numbers
What this profile holds, counted.
Closes · 1 year250
SEC filings on record1,39215 flagged findings
Reported transactions (Form 4)40since Aug 1, 2024 · and 1 other holding
Corporate events (8-K)30since Jun 3, 2016
What the record says
Description, identity and filings, each with its source.
Every block cites its source. The colour of a finding marks its category — which document, who filed it — not how much it matters.
What the company does
PDF Solutions, Inc. is an American multinational software and engineering services company based in Santa Clara, California. The company is listed in the Nasdaq stock exchange under the ticker symbol PDFS.
Source: Wikipedia (CC BY-SA 4.0) · copied on Sep 3, 2026 · may not reflect recent changes.
Regulatory history
Topics detected in its SEC reports, with the original excerpt.
Each topic is assigned by a classifier over the full filing; the excerpts show where it was detected and are not always enough to verify it. Open the filing to read it in full.
- 2026-05-14share offering or dilution eventrecentOpen filing ↗“…any of the economic consequences of ownership of the common stock, whether any such transaction described in clauses 1 or 2…”
+1 more passage from the same document
- “…the signatory has or acquires the power of disposition (including, without limitation, common stock or such other securities which…”
- 2026-05-14capital return (buybacks/dividends)recentOpen filing ↗“…as relevant. Any cash dividends paid in the future could affect the trading price of our common stock and decrease our cash…”
+1 more passage from the same document
- “…cash we have available to fund working capital, capital expenditures, strategic acquisitions or business opportunities, and other…”
- 2026-05-13share offering or dilution eventrecentOpen filing ↗“…any of the economic consequences of ownership of the common stock, whether any such transaction described in clauses 1 or 2…”
+1 more passage from the same document
- “…the signatory has or acquires the power of disposition (including, without limitation, common stock or such other securities which…”
- 2026-05-13capital return (buybacks/dividends)recentOpen filing ↗“…dividends paid in the future could affect the trading price of our common stock and decrease our cash reserves, which could reduce…”
+1 more passage from the same document
- “…to fund working capital, capital expenditures, strategic acquisitions or business opportunities, and other general corporate…”
- 2026-05-07share offering or dilution eventrecentOpen filing ↗“…Inputs Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs…”
+1 more passage from the same document
- “…Money market mutual funds Cash equivalents $ 12,645 $ 12,645 $ — $ — $ 14,535 $ 14,535 $ — $ — Available-for-sale debt securities:…”
- 2026-05-07export control restrictionsrecentOpen filing ↗“…Foundries that participate at leading edge nodes are expected to continue to invest in new technologies such as memory,…”
+1 more passage from the same document
- “…uncertainty caused by these regulations and the potential for additional future restrictions could negatively affect our future…”
- 2026-05-07capital return (buybacks/dividends)recentOpen filing ↗“…total long-term debt were as follows (in thousands): Year Ending December 31, Amount 2026 (remaining nine months) $ 1,875 2027…”
+1 more passage from the same document
- “…thousands): Year Ending December 31, Amount 2026 (remaining nine months) $ 1,875 2027 2,500 2028 2,500 2029 2,500 2030 58,125 Total…”
Original excerpts from SEC filings, untranslated. Not advice and not a prediction.
The 25 most recent filings (of 1,392)
Every SEC filing, newest first, with what it is. Below, each type with its own explanation.
- Oct 9, 26SCHEDULE 13G ↗Passive stake · Wasatch Advisors LP · 6.3% · event on Sep 30, 26
- Sep 1, 26Form 4 ↗Insider transaction
Notice of proposed sale · 2 Form 144 filingsshow all 2hide
- Aug 31, 26Form 144 ↗Notice of proposed sale
- Aug 12, 26Form 144 ↗Notice of proposed sale
- Aug 12, 26Form 4 ↗Insider transaction
- Aug 6, 2610-Q ↗Quarterly report
- Aug 6, 268-K ↗Current report · Results
Insider transaction · 8 Form 4 filingsshow all 8hide
- Jun 18, 268-K ↗Current report · Shareholder vote results
- May 27, 26SCHEDULE 13G/A ↗Passive stake · amendment
- May 15, 268-K ↗Current report · Other events
- May 14, 26424B5 ↗Securities offering
- May 14, 26SCHEDULE 13G ↗Passive stake · Needham Investment Management L.L.C. · 5.1% · event on Mar 31, 26
- May 13, 26424B5 ↗Securities offering
- May 13, 26S-3ASR ↗Securities offering
- May 7, 2610-Q ↗Quarterly report
- May 7, 268-K ↗Current report · Results
- Apr 30, 26DEFA14A ↗Shareholder meeting and votes
1,392 filings on record, the oldest from Sep 6, 01.
Listing the 25 most recent filings of the 1,392 on record.
32840
3 material agreements entered2025 – 2026show all 3hide
- Apr 24, 26Entered a material agreement+2 more in the same filing8-K 1.01 ↗
- Mar 7, 25Entered a material agreement+3 more in the same filing8-K 1.01 ↗
- Feb 19, 25Entered a material agreement+1 more in the same filing8-K 1.01 ↗
7 senior executive changes2021 – 2023show all 7hide
- Dec 18, 23A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- Jun 15, 23A senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
- Nov 10, 22A senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
- Jun 16, 22A senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
- Nov 4, 21A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- Jun 22, 21A senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
- Jun 15, 21A senior executive left or was appointed8-K 5.02 ↗
- Jul 31, 20Entered a material agreement+2 more in the same filing8-K 1.01 ↗
7 senior executive changes2018 – 2020show all 7hide
- Jun 29, 20A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- Mar 12, 20A senior executive left or was appointed+1 more in the same filing8-K/A 5.02 ↗
- Feb 12, 20A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- Jul 31, 19A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- Jun 4, 19A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- May 31, 19A senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
- Oct 29, 18A senior executive left or was appointed8-K 5.02 ↗
- Oct 24, 18Restructuring plan with committed costs8-K 2.05 ↗
- Sep 18, 18Auditor change filing (8-K Item 4.01)+1 more in the same filing8-K 4.01 ↗
4 senior executive changes2016 – 2018show all 4hide
- Aug 28, 18A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- Aug 6, 18A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- Jun 1, 17A senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
- Nov 29, 16A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- Sep 13, 16Listing notice (8-K 3.01)8-K 3.01 ↗
- Jun 3, 16A senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
The record reaches back to Mar 10, 05.
Stress disclosures older than the timeline above. They are individual events from the record, not a complete timeline: there may be more between them.
- Aug 8, 08Listing notice (8-K 3.01)+2 more in the same filing8-K 3.01 ↗
The full record holds 3 stress filings.
Corporate events are tracked from 2004-08-23, when the SEC renumbered 8-K items. Earlier filings use an incompatible numbering and are not classified here.
Schedule 13G: short-form filing
The short form, for holders who meet specific requirements: institutional investors, passive investors without a control purpose, or exempt investors. Asset managers and index funds usually file it.
- KIBARIAN JOHN KACHIG6.5%Dec 31, 25SCHEDULE 13G/A ↗
- John Kachig Kibarian6.5%Feb 12, 25SCHEDULE 13G/A ↗
- Wasatch Advisors LP6.3%Sep 30, 26SCHEDULE 13G ↗
- Needham Investment Management L.L.C.5.1%Mar 31, 26SCHEDULE 13G ↗3 co-filers on this document — the figure is the largest single stake, not their sum. · 2 earlier filings
Structured 13D/G data starts 2023-12, when the SEC moved these filings to a machine-readable format. Earlier filings exist but are not parsed here.
Sale intention announced
On Aug 31, ANDRZEJ STROJWAS filed notice of intent to sell up to $151K.
A notice is not a sale: it may not go ahead, may happen in part, or at a different price.
After the notice, they sold $151K on Aug 31, per their Form 4. That is 100% of the shares announced so far, and the window is still open.
View notice (Form 144) ↗+1 more recent notices
- Aug 31, 26Sell$151KAndrzej StrojwasChief Technology Officer↗
- Aug 12, 26Sell$77KShuo Zhang↗
- May 13, 25Buy$146KMICHAEL B GUSTAFSON↗
- Feb 25, 25Buy$346KJOHN KACHIG KIBARIANPRESIDENT AND CEO↗
- Feb 24, 25Buy$783KJOHN KACHIG KIBARIANPRESIDENT AND CEO↗
- Feb 24, 25Buy$92KMICHAEL B GUSTAFSON↗
- Dec 17, 24Sell$8KAndrzej StrojwasCTO↗
- Dec 17, 24Sell$182KAndrzej StrojwasCTO↗
- Dec 16, 24Sell$155KAndrzej StrojwasCTO↗
- Dec 11, 24Sell$62KNancy Erba↗
Stock compensation, tax and giftsshow the 30 other transactionshide
Stock compensation, tax withholding, option exercises and gifts. They are listed separately and are not included in the purchase and sale totals. The type describes the transaction, not the filer's intent.
- Jul 1, 26Tax$402KAdnan RazaEVP, Finance and CFO↗
- Jul 1, 26Compensationamount n/aAdnan RazaEVP, Finance and CFO↗
- Jul 1, 26Compensationamount n/aNancy Erba↗
- Jul 1, 26Compensationamount n/aYe Jane Li↗
- Jul 1, 26Compensationamount n/aJOSEPH R BRONSON↗
- Jul 1, 26Compensationamount n/aCHI-FOON CHAN↗
- Jul 1, 26Compensationamount n/aMICHAEL B GUSTAFSON↗
- Jul 1, 26Compensationamount n/aShuo Zhang↗
- Jul 1, 26Tax$91KAndrzej StrojwasChief Technology Officer↗
- Jul 1, 26Compensationamount n/aAndrzej StrojwasChief Technology Officer↗
- Jan 1, 26Tax$157KAdnan RazaEVP, Finance and CFO↗
- Jan 1, 26Tax$79KAndrzej StrojwasChief Technology Officer↗
- Dec 9, 25Giftamount n/aKIMON MICHAELSEVP of Products and Solutions↗
- Aug 1, 25Compensationamount n/aAndrzej StrojwasChief Technology Officer↗
- Aug 1, 25Compensationamount n/aAdnan RazaEVP, Finance and CFO↗
- Jul 1, 25Compensationamount n/aShuo Zhang↗
- Jul 1, 25Compensationamount n/aYe Jane Li↗
- Jul 1, 25Compensationamount n/aMICHAEL B GUSTAFSON↗
- Jul 1, 25Compensationamount n/aNancy Erba↗
- Jul 1, 25Compensationamount n/aCHI-FOON CHAN↗
- Jul 1, 25Compensationamount n/aJOSEPH R BRONSON↗
- Jul 1, 25Tax$55KAndrzej StrojwasChief Technology Officer↗
- Jul 1, 25Tax$108KAdnan RazaEVP, Finance and CFO↗
- Jul 1, 25Tax$17KKIMON MICHAELSEVP of Products and Solutions↗
- Jan 1, 25Taxamount n/aAndrzej StrojwasCTO↗
- Jan 1, 25Taxamount n/aAdnan RazaEVP, FINANCE AND CFO↗
- Jan 1, 25Taxamount n/aKIMON MICHAELSEVP OF PRODUCTS AND SOLUTIONS↗
- Nov 25, 24Giftamount n/aKIMON MICHAELSEVP OF PRODUCTS AND SOLUTIONS↗
- Aug 1, 24Tax$12KAndrzej StrojwasCTO↗
- Aug 1, 24Tax$729KIMON MICHAELSEVP OF PRODUCTS AND SOLUTIONS↗
The full record holds 99 transactions and goes back to Nov 21, 22.
Its sector and its market
Pdf Solutions Inc. among Information Technology companies
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- End-of-day closes provided by Twelve Data. One close per session; not real time. Closes adjusted for splits.
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- 250 clean closes in the period.
- SEC records
- 1,392 documents on file, from Sep 6, 2001 to Oct 9, 2026.
- Company description
- Wikipedia, read on Sep 3, 2026.
- This page
- Generated on Oct 19, 2026; refreshed through the day.
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Which SEC documents appear here?
Those filed with the SEC by the company, its insiders and its major shareholders, within our coverage: periodic reports (10-K, 10-Q, 20-F), material events (8-K), proposed sale notices (Form 144), insider transactions (Form 4) and stakes above 5% (13D/13G). Each links to the original on EDGAR.
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