Michael B Gustafson insider trades: Pdf Solutions (PDFS) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Michael reports to the SEC
Open-market buys and sales
11 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| May 13, 2025 | PDFS | ↑ Buy | 7,500 | $19.45 | $146K | Direct | May 14, 2025 (1d) |
| Feb 24, 2025 | PDFS | ↑ Buy | 4,000 | $23.06 | $92K | Direct | Feb 25, 2025 (1d) |
| Dec 13, 2023 | PDFS | ↓ Sell | 5,750 | $30.92 | $178K | Direct | Dec 14, 2023 (1d) |
| Feb 28, 2023 | PDFS | ↓ Sell | 13,316 | $37.26 | $496K | Direct | Mar 2, 2023 (2d) |
| Nov 16, 2022 | PDFS | ↓ Sell | 5,000 | $29.92 | $150K | Direct | Nov 17, 2022 (1d) |
| Aug 18, 2022 | MRAM | ↓ Sell | 33,603 | $7.55 | $254K | Direct | Aug 19, 2022 (1d) |
| Nov 17, 2021 | MRAM | ↓ Sell | 14,286 | $12.70 | $181K | Direct | Nov 18, 2021 (1d) |
| Nov 12, 2021 | PDFS | ↓ Sell | 3,000 | $33.00 | $99K | Direct | Nov 15, 2021 (3d) |
| Nov 6, 2019 | PDFS | ↓ Sell | 2,600 | $15.78 | $41K | Direct | Nov 7, 2019 (1d) |
| Jun 13, 2019 | PDFS | ↓ Sell | 1,000 | $12.95 | $13K | Direct | Jun 14, 2019 (1d) |
| Feb 12, 2018 | MRAM | ↑ Buy | 14,286 | $7.00 | $100K | Direct | Feb 13, 2018 (1d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other PDFS insiders
Open-market trades in the last 12 months
About Michael B Gustafson's insider trades
Michael B Gustafson is a director at Pdf Solutions (PDFS). Since Feb 12, 2018, Michael has reported 3 open-market purchases worth $338K and 8 sales worth $1.4M on SEC Form 4. There have been no open-market trades in the last 12 months.
Their filings also include grants and awards (19 filings), option exercises (4 filings), shares returned to the company (1 filing), conversions (1 filing). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every PDFS insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.