Luc Seraphin
Luc Seraphin: President and CEO · Director at Rambus. What Luc Seraphin 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.
Rambus (RMBS)
Luc Seraphin holds 345,767 Rambus shares (0.32% of the company), worth about $38.1M at the last price, according to the Form 4 of Apr 2, 2026.
- Shares held: 345,767 (0.32%), $38.1M — Held in their own name.
Declarations
- Rambus (RMBS) — Form 4 of Apr 2, 2026 (President and CEO): grant or award of 32,684; shares withheld for tax of 12,561 at $89.95; 345,767 shares after 0001193125-26-142587
- Rambus (RMBS) — Form 4 of Mar 2, 2026 (President and CEO): open-market sale of 1,679 at $95.83; open-market sale of 7,225 at $97.38; 331,070 shares after 0001193125-26-089599
- Rambus (RMBS) — Form 4 of Feb 1, 2026 (President and CEO): grant or award of 143,744; shares withheld for tax of 92,523 at $113.71; 370,984 shares after 0001193125-26-036329
- Rambus (RMBS) — Form 4 of Apr 23, 2025 (President and CEO): open-market sale of 1,255 at $45.00; open-market sale of 6,348 at $46.97; 319,241 shares after 0000917273-25-000069
- Rambus (RMBS) — Form 4 of Apr 15, 2025 (President and CEO): open-market sale of 10,000 at $47.79; 326,844 shares after 0000917273-25-000067
- Rambus (RMBS) — Form 4 of Apr 8, 2025 (President and CEO): open-market sale of 10,000 at $46.81; 336,844 shares after 0000917273-25-000065
- Rambus (RMBS) — Form 4 of Apr 1, 2025 (President and CEO): grant or award of 55,077; shares withheld for tax of 5,164 at $52.29; 346,844 shares after 0000917273-25-000043
- Rambus (RMBS) — Form 4 of Mar 25, 2025 (President and CEO): open-market sale of 10,000 at $58.64; 306,931 shares after 0000917273-25-000034
- Rambus (RMBS) — Form 4 of Mar 18, 2025 (President and CEO): open-market sale of 10,000 at $53.79; 316,931 shares after 0000917273-25-000028
- Rambus (RMBS) — Form 4 of Feb 1, 2025 (President and CEO): grant or award of 191,548; shares withheld for tax of 127,869 at $60.35; 326,931 shares after 0000917273-25-000008
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.