Necip Sayiner
Necip Sayiner: Director at Sandisk, Director at Rambus, Director at Teradyne and Director at Axcelis Technologies. What Necip Sayiner holds in 4 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.
Sandisk (SNDK)
Necip Sayiner holds 2,900 Sandisk shares (0.00% of the company), worth about $4.9M at the last price, according to the Form 4 of May 8, 2026.
- Shares held: 2,900 (0.00%), $4.9M — Held in their own name.
Rambus (RMBS)
Necip Sayiner holds 18,223 Rambus shares (0.02% of the company), worth about $2.0M at the last price, according to the Form 4 of Jun 3, 2026.
- Shares held: 18,223 (0.02%), $2.0M — Held in their own name.
Teradyne (TER)
Necip Sayiner holds 2,800 Teradyne shares (0.00% of the company), worth about $1.2M at the last price, according to the Form 4 of May 8, 2026.
- Shares held: 2,800 (0.00%), $1.2M — Held in their own name.
Axcelis Technologies (ACLS)
Necip Sayiner holds 7,112 Axcelis Technologies shares (0.02% of the company), worth about $1.0M at the last price, according to the Form 4 of Jun 3, 2026.
- Shares held: 7,112 (0.02%), $1.0M — Held in their own name.
Declarations
- Axcelis Technologies (ACLS) — Form 4 of Jun 3, 2026: open-market sale of 1,586 at $157.44; 7,112 shares after 0001338515-26-000004
- Rambus (RMBS) — Form 4 of Jun 3, 2026: open-market sale of 5,000 at $170.15; 18,223 shares after 0001193125-26-255896
- Axcelis Technologies (ACLS) — Form 4 of May 15, 2026: grant or award of 1,440; 8,698 shares after 0001338515-26-000002
- Teradyne (TER) — Form 4 of May 8, 2026: grant or award of 668; 2,800 shares after 0000904454-26-000266
- Sandisk (SNDK) — Form 4 of May 8, 2026: open-market sale of 579 at $1,503.11; 2,900 shares after 0001363249-26-000028
- Rambus (RMBS) — Form 4 of May 8, 2026: open-market sale of 9,824 at $130.18; 23,223 shares after 0001193125-26-216636
- Rambus (RMBS) — Form 4 of Apr 1, 2026: grant or award of 2,223; 33,047 shares after 0001193125-26-142650
- Sandisk (SNDK) — Form 4 of Dec 3, 2025: open-market sale of 1,271 at $195.14; 3,479 shares after 0001242648-25-000003
- Sandisk (SNDK) — Form 4 of Nov 18, 2025: grant or award of 979; 4,750 shares after 0001363249-25-000115
- Rambus (RMBS) — Form 4 of Sep 11, 2025: open-market sale of 7,500 at $85.63; 30,824 shares after 0000950170-25-114452
- Rambus (RMBS) — Form 4 of Aug 8, 2025: open-market sale of 7,500 at $73.53; 38,324 shares after 0001338515-25-000004
- Teradyne (TER) — Form 4 of Jul 1, 2025: grant or award of 2,132; 2,132 shares after 0000904454-25-000362
- Teradyne (TER) — Form 3 of Jul 1, 2025; 0 shares after 0000904454-25-000360
- Axcelis Technologies (ACLS) — Form 4 of May 15, 2025: grant or award of 3,586; 7,258 shares after 0001415889-25-013219
- Rambus (RMBS) — Form 4 of Apr 1, 2025: grant or award of 3,824; 45,824 shares after 0000917273-25-000059
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.