Ramakumar Mayampurath
CIK 1859332 · View on SEC EDGAR ↗
First SEC filing: May 4, 2021 · Latest: May 4, 2021
On this page
- Insider at Companies where this person is a reporting insider.
- Insider transactions Every share this person bought or sold, from Form 4 filings.
- Derivatives Options and other derivative holdings reported by this person.
- Initial holdings The stakes this person held when they first started reporting.
- Compensation Executive pay disclosed in company proxy statements.
Insider at
Insider transactions
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| May 22, 2026 | MKSI | S 10b5-1 | 8,810 | $315.48 | $2,779,379 | 1 Direct | -99.99% | Disposed | -9.5% (price as of 2026-08-19) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II)
Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| Feb. 17, 2026 | MKSI | Restricted Stock Unit | Common Stock (2,702) | — | — | 2,702 | Disposed |
| Feb. 17, 2026 | MKSI | Restricted Stock Unit | Common Stock (2,958) | — | — | 2,958 | Disposed |
| Feb. 17, 2026 | MKSI | Restricted Stock Unit | Common Stock (4,279) | — | — | 4,279 | Acquired |
| Feb. 8, 2026 | MKSI | Restricted Stock Unit | Common Stock (8,878) | — | — | 8,878 | Acquired |
| Nov. 17, 2025 | MKSI | Restricted Stock Unit | Common Stock (8,295) | — | — | 8,295 | Disposed |
| Feb. 18, 2025 | MKSI | Restricted Stock Unit | Common Stock (8,107) | — | — | 8,107 | Acquired |
| Nov. 15, 2024 | MKSI | Restricted Stock Unit | Common Stock (16,591) | — | — | 16,591 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 1 holding
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| May 4, 2021 | ROG | Capital (Common) Stock | 925 | Direct |
Compensation (DEF 14A)
Matched by name from proxy statements (DEF 14A) — verify against the filing.
MKSI
PFO| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2024 | $134,906 | $1,000,000 | — | — | — | — | $60,601 | $2,917,469 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.