Mark Fields
Mark Fields: Director at Qualcomm and Director at Lam Research. What Mark Fields holds in 2 AI and semiconductor companies tracked on Silicon Floor, from their SEC filings, broken down: the shares held and how, then any restricted shares, options or other rights declared.
Qualcomm (QCOM)
Mark Fields holds 13,057 Qualcomm shares (0.00% of the company), worth about $2.4M at the last price, according to the Form 4 of Mar 17, 2026.
- Shares held: 9,988 (0.00%), $1.8M — Held in their own name.
- Shares held: 3,069 (0.00%), $556,777.98 — Held by a spouse or a family member (by Spouse's Trust).
Lam Research (LRCX)
Mark Fields holds 5,882 Lam Research shares (0.00% of the company), worth about $2.0M at the last price, according to the Form 4 of Nov 7, 2025.
- Shares held: 5,322 (0.00%), $1.8M — Held in their own name.
- Shares held: 560 (0.00%), $192,796.80 — Held through trusts (Trust).
Declarations
- Qualcomm (QCOM) — Form 4 of Mar 17, 2026: grant or award of 2,563; 13,057 shares after 0000804328-26-000039
- Lam Research (LRCX) — Form 4 of Nov 7, 2025: grant or award of 1,635; 5,882 shares after 0001191534-25-000007
- Qualcomm (QCOM) — Form 4 of Mar 18, 2025: grant or award of 2,097; 10,349 shares after 0001888316-25-000026
- Lam Research (LRCX) — Form 4 of Nov 8, 2024: grant or award of 737; grant or award of 2,950; 4,247 shares after 0000707549-24-000142
- Lam Research (LRCX) — Form 3 of Aug 30, 2024; 560 shares after 0000707549-24-000111
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.