PDFS insider trading — PDF Solutions Inc
Over the last 90 days, insiders at PDF Solutions Inc (PDFS) made 0 open-market purchases worth $0 and 2 open-market sales worth $228K, making them net sellers by $228K. The largest sale was by Strojwas Andrzej (Chief Technology Officer), who sold 3,394 shares for $151K on Aug 31, 2026.
Updated Oct 16, 2026.
Recent PDFS insider transactions
Every Form 4 filed by PDF Solutions Inc officers, directors and 10% owners in the last 90 days, newest first. P = open-market purchase, S = open-market sale; other codes are awards, option exercises, tax withholding or gifts.
| Trade date | Insider | Role | Type | Ownership | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|---|
| Aug 31, 2026 | Strojwas Andrzej | Chief Technology Officer | S · Sale | Direct | 3,394 | $44.41 | $151K | Form 4 |
| Aug 12, 2026 | Zhang Shuo | Director | S · Sale | Direct | 1,501 | $51.47 | $77K | Form 4 |
PDFS insider trading FAQ
Are insiders buying PDFS stock?
Not on the open market. In the last 90 days, PDF Solutions Inc insiders made no open-market purchases, and 2 open-market sales totaling $228K. Purchases with the insider's own money are generally seen as a stronger signal than sales, which happen for many reasons (taxes, diversification, planned 10b5-1 sales).
Who are the insiders trading PDFS?
Recent sellers: Strojwas Andrzej, Zhang Shuo.
Where does PDFS insider trading data come from?
Every transaction comes from SEC Form 4 filings on EDGAR. Company officers, directors and 10% owners must file a Form 4 within two business days of buying or selling. InsiderBolt reads these filings directly from the SEC.
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Insider trading data is for informational purposes only and is not investment advice. Filings can be amended; always confirm details on SEC EDGAR.