Thomas Caulfield
Thomas Caulfield: Director at GlobalFoundries and Director at Sandisk. What Thomas Caulfield 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.
GlobalFoundries (GFS)
Thomas Caulfield holds 262,971 GlobalFoundries shares (0.05% of the company), worth about $12.8M at the last price, according to the Form 3 of Mar 17, 2026.
- Shares held: 262,971 (0.05%), $12.8M — Held in their own name.
Sandisk (SNDK)
Thomas Caulfield holds 7,146 Sandisk shares (0.00% of the company), worth about $12.1M at the last price, according to the Form 4 of May 12, 2026.
- Shares held: 4,834 (0.00%), $8.2M — Held by a spouse or a family member (Spouse's Trust).
- Shares held: 2,312 (0.00%), $3.9M — Held in their own name.
Declarations
- Sandisk (SNDK) — Form 4 of May 12, 2026: gift of 9,666; 7,146 shares after 0001363249-26-000031
- GlobalFoundries (GFS) — Form 4 of May 1, 2026 0001709048-26-000114
- GlobalFoundries (GFS) — Form 3 of Mar 17, 2026; 262,971 shares after 0001628280-26-018876
- Sandisk (SNDK) — Form 4 of Mar 3, 2026: gift of 14,500; gift of 14,500; 16,812 shares after 0001363249-26-000008
- Sandisk (SNDK) — Form 4 of Nov 18, 2025: grant or award of 979; 16,812 shares after 0001363249-25-000114
- Sandisk (SNDK) — Form 4 of Mar 3, 2025: grant or award of 5,693; grant or award of 4,148; 15,833 shares after 0001363249-25-000015
- Sandisk (SNDK) — Form 3 of Jan 31, 2025; 0 shares after 0001363249-25-000002
- Western Digital (WDC) — Form 4 of Nov 20, 2024: grant or award of 3,759; 21,737 shares after 0001266824-24-000114
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.