Michael B. Gustafson
Michael B. Gustafson: Director at PDF Solutions. What Michael B. Gustafson holds in an AI or semiconductor company tracked on Silicon Floor, from their SEC filings, broken down: the shares held and how, then any restricted shares, options or other rights declared.
PDF Solutions (PDFS)
Michael B. Gustafson holds 40,192 PDF Solutions shares (0.10% of the company), worth about $2.2M at the last price, according to the Form 4 of Jul 1, 2026.
- Shares held: 40,192 (0.10%), $2.2M — Held in their own name.
Declarations
- PDF Solutions (PDFS) — Form 4 of Jul 1, 2026: grant or award of 2,689; 40,192 shares after 0001437749-26-022545
- PDF Solutions (PDFS) — Form 4 of Jul 1, 2025: grant or award of 7,429; 37,503 shares after 0001437749-25-021976
- PDF Solutions (PDFS) — Form 4 of May 13, 2025: open-market purchase of 7,500 at $19.45; 30,074 shares after 0001415889-25-012951
- PDF Solutions (PDFS) — Form 4 of Feb 24, 2025: open-market purchase of 4,000 at $23.06; 22,574 shares after 0001415889-25-005624
- PDF Solutions (PDFS) — Form 4 of Jul 1, 2024: grant or award of 4,382; 18,574 shares after 0001415889-24-018714
Sources: SEC Schedules 13D and 13G (stakes above 5%, which count everything a person votes or can acquire within 60 days) and Forms 3, 4 and 5 (the shares a director, officer or 10% owner holds, filed within two business days of each trade). Values at the last price.
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