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SEC EDGAR · Forms 3/4/5Updated through Oct 30, 2026•19 filings

PDFS

PDF SOLUTIONS INC

Net sales of $228K over the last 3 months

2 sellers account for the net balance. There is no cluster of three distinct buyers within 30 days. We found no CEO/CFO purchases over 12 months.

How to read this signal

Only open-market P purchases and S sales count toward the signal. Vesting, options, taxes and gifts remain in the source data but do not trigger alerts. Rule 10b5-1 trades are shown as informational.

JSON example

3-month balance

−$227,984

0 buyers · 2 sellers

12-month purchases

$0.00

0 distinct insiders

12-month sales

$227,984

2 distinct insiders

Highlighted alerts

2

0 Rule 10b5-1 trades treated as informational

Buying cluster · 30 days

Fewer than three distinct buyers

CEO/CFO purchases · 12 months

No executive purchases found

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Form 4 raw → Raspberry

The value is in what we do not call a signal.

The SEC XML stores every transaction. Raspberry keeps that evidence, reads the footnotes and separates voluntary open-market activity from vesting, option exercises, gifts, tax withholding, stock purchase and dividend reinvestment plans and pre-programmed 10b5-1 trades.

21
Raw transactions
Everything returned by the filing
2
Voluntary view
P/S trades after deterministic checks
19
Administrative noise
Stored, never alerted
0
10b5-1
Shown as informational
SEC ownership XML facts
Code
A
Shares
70,000
Price
$0.00
Footnotes
4

Includes 27 shares of common stock that were purchased on July 31, 2026 under the PDF Employee Stock Purchase Plan. The Performance Stock Units (PSUs) represent a contingent right to receive one share of the Issuer's common stock. The number of PSUs reported represents the target award (100%); the number of PSUs ultimately earned may range from 0% to 100% of target. The number of PSUs that vest and are earned will be based on attainment of certain stock price goals following the end of a three-year performance period.

Raspberry interpretation
Informational — no alert

Reason: administrative_code.

Verify in SEC EDGAR

Recent transactions

Voluntary purchases and sales; administrative noise stays hidden.

2 transactions

Strojwas Andrzej

Chief Technology Officer

SaleAlert
Shares
3,394
Price
$44.41
Value
$150,728
Open SEC filing

Zhang Shuo

Director

SaleAlert
Shares
1,501
Price
$51.47
Value
$77,256
Open SEC filing

“Alert” means a voluntary, unscheduled transaction according to the filing; it is not an investment recommendation. Official source: SEC EDGAR.