James Alan Schreiner
James Alan Schreiner: EVP & COO at MKS. What James Alan Schreiner 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.
MKS (MKSI)
James Alan Schreiner holds 19,201 MKS shares (0.03% of the company), worth about $4.8M at the last price, according to the Form 4 of Jun 12, 2026.
- Shares held: 19,201 (0.03%), $4.8M — Held in their own name.
- Share units: 11,396 (0.02%), $2.9M — MKS promised them as pay: each unit becomes a share when it vests, if its conditions are met. No vote until then.
Declarations
- MKS (MKSI) — Form 4 of Jun 12, 2026 (EVP & COO): open-market sale of 2,471 at $345.52; open-market sale of 812 at $346.41; 19,201 shares after 0001049502-26-000109
- MKS (MKSI) — Form 4 of Jun 10, 2026 (EVP & COO): open-market sale of 781 at $317.42; 22,701 shares after 0001049502-26-000107
- MKS (MKSI) — Form 4 of Feb 24, 2026 (EVP & COO): open-market sale of 4,100 at $255.00; 23,402 shares after 0001049502-26-000051
- MKS (MKSI) — Form 4 of Feb 17, 2026 (EVP & COO): option exercise or conversion of 2,567; option exercise or conversion of 1,330; 27,502 shares after 0001049502-26-000024
- MKS (MKSI) — Form 4 of Feb 8, 2026 (EVP & COO) 0001049502-26-000010
- MKS (MKSI) — Form 4 of Oct 22, 2025 (EVP & COO): open-market sale of 711 at $138.68; 22,535 shares after 0001049502-25-000033
- MKS (MKSI) — Form 4 of Sep 18, 2025 (EVP & COO): open-market sale of 838 at $124.00; 23,246 shares after 0001049502-25-000029
- MKS (MKSI) — Form 4 of Aug 18, 2025 (EVP & COO): option exercise or conversion of 2,641; shares withheld for tax of 1,249 at $100.22; 24,084 shares after 0001049502-25-000023
- MKS (MKSI) — Form 4 of Aug 4, 2025 (EVP & COO) 0001049502-25-000019
- MKS (MKSI) — Form 4 of Jul 7, 2025 (EVP & COO, MSD): open-market sale of 957 at $102.44; 22,692 shares after 0001049502-25-000006
- MKS (MKSI) — Form 4 of Feb 18, 2025 (EVP & COO, MSD): option exercise or conversion of 1,630; option exercise or conversion of 1,173; 23,497 shares after 0001127602-25-005644
- MKS (MKSI) — Form 4 of Feb 10, 2025 (EVP & COO, MSD) 0001127602-25-004221
- MKS (MKSI) — Form 4 of Aug 19, 2024 (EVP & COO, MSD): option exercise or conversion of 3,961; shares withheld for tax of 1,873 at $119.09; 18,705 shares after 0001127602-24-022584
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.
All holders · Who owns each AI company · All tracked companies · The AI market