Eric Robert Taranto
CIK 1842235 · View on SEC EDGAR ↗
Insider
First SEC filing: Feb. 9, 2021 · Latest: Feb. 9, 2021
On this page
Insider at
Insider transactions
0 buys (P)
3 sells (S)
Net:
$-2,278,506
+ 81 non-open-market transactions below
last 12 months, based on the transactions shown below
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
81 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| May 11, 2026 | MKSI | S | 2,849 | $319.93 | $911,481 | 12,596 Direct | -18.45% | Disposed | -10.8% (price as of 2026-08-19) |
| March 6, 2026 | MKSI | S | 4,568 | $220.52 | $1,007,335 | 15,445 Direct | -22.83% | Disposed | 29.4% (price as of 2026-08-19) |
| Feb. 20, 2026 | MKSI | S | 1,453 | $247.55 | $359,690 | 20,013 Direct | -6.77% | Disposed | 15.3% (price as of 2026-08-19) |
| April 29, 2021 | MKSI | S | 1,788 | $185.29 | $331,299 | 3,506 Direct | -33.77% | Disposed | 54.0% (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 (1,303) | — | — | 1,303 | Disposed |
| Feb. 17, 2026 | MKSI | Restricted Stock Unit | Common Stock (1,167) | — | — | 1,167 | Disposed |
| Feb. 17, 2026 | MKSI | Restricted Stock Unit | Common Stock (976) | — | — | 976 | Disposed |
| Feb. 17, 2026 | MKSI | Restricted Stock Unit | Common Stock (348) | — | — | 348 | Disposed |
| Feb. 17, 2026 | MKSI | Restricted Stock Unit | Common Stock (914) | — | — | 914 | Disposed |
| Feb. 17, 2026 | MKSI | Restricted Stock Unit | Common Stock (1,764) | — | — | 1,764 | Disposed |
| Feb. 17, 2026 | MKSI | Restricted Stock Unit | Common Stock (1,759) | — | — | 1,759 | Acquired |
| Feb. 8, 2026 | MKSI | Restricted Stock Unit | Common Stock (3,504) | — | — | 3,504 | Acquired |
| Feb. 18, 2025 | MKSI | Restricted Stock Unit | Common Stock (975) | — | — | 975 | Disposed |
| Feb. 18, 2025 | MKSI | Restricted Stock Unit | Common Stock (348) | — | — | 348 | Disposed |
| Feb. 18, 2025 | MKSI | Restricted Stock Unit | Common Stock (914) | — | — | 914 | Disposed |
| Feb. 18, 2025 | MKSI | Restricted Stock Unit | Common Stock (1,764) | — | — | 1,764 | Disposed |
| Feb. 18, 2025 | MKSI | Restricted Stock Unit | Common Stock (805) | — | — | 805 | Disposed |
| Feb. 18, 2025 | MKSI | Restricted Stock Unit | Common Stock (1,119) | — | — | 1,119 | Disposed |
| Feb. 18, 2025 | MKSI | Restricted Stock Unit | Common Stock (3,911) | — | — | 3,911 | Acquired |
| Feb. 10, 2025 | MKSI | Restricted Stock Unit | Common Stock (1,045) | — | — | 1,045 | Acquired |
| Feb. 15, 2024 | MKSI | Restricted Stock Unit | Common Stock (914) | — | — | 914 | Disposed |
| Feb. 15, 2024 | MKSI | Restricted Stock Unit | Common Stock (1,764) | — | — | 1,764 | Disposed |
| Feb. 15, 2024 | MKSI | Restricted Stock Unit | Common Stock (804) | — | — | 804 | Disposed |
| Feb. 15, 2024 | MKSI | Restricted Stock Unit | Common Stock (1,118) | — | — | 1,118 | Disposed |
| Feb. 15, 2024 | MKSI | Restricted Stock Unit | Common Stock (387) | — | — | 387 | Disposed |
| Feb. 15, 2024 | MKSI | Restricted Stock Unit | Common Stock (775) | — | — | 775 | Disposed |
| Feb. 15, 2024 | MKSI | Restricted Stock Unit | Common Stock (2,927) | — | — | 2,927 | Acquired |
| Feb. 5, 2024 | MKSI | Restricted Stock Unit | Common Stock (5,292) | — | — | 5,292 | Acquired |
| April 17, 2023 | MKSI | Restricted Stock Unit | Common Stock (935) | — | — | 935 | Disposed |
| Feb. 15, 2023 | MKSI | Restricted Stock Unit | Common Stock (804) | — | — | 804 | Disposed |
| Feb. 15, 2023 | MKSI | Restricted Stock Unit | Common Stock (1,117) | — | — | 1,117 | Disposed |
| Feb. 15, 2023 | MKSI | Restricted Stock Unit | Common Stock (387) | — | — | 387 | Disposed |
| Feb. 15, 2023 | MKSI | Restricted Stock Unit | Common Stock (774) | — | — | 774 | Disposed |
| Feb. 15, 2023 | MKSI | Restricted Stock Unit | Common Stock (2,742) | — | — | 2,742 | Acquired |
| Feb. 8, 2023 | MKSI | Restricted Stock Unit | Common Stock (3,354) | — | — | 3,354 | Acquired |
| April 29, 2022 | MKSI | Restricted Stock Unit | Common Stock (2,413) | — | — | 2,413 | Acquired |
| April 18, 2022 | MKSI | Restricted Stock Unit | Common Stock (935) | — | — | 935 | Disposed |
| April 18, 2022 | MKSI | Restricted Stock Unit | Common Stock (787) | — | — | 787 | Disposed |
| Feb. 15, 2022 | MKSI | Restricted Stock Unit | Common Stock (387) | — | — | 387 | Disposed |
| Feb. 15, 2022 | MKSI | Restricted Stock Unit | Common Stock (774) | — | — | 774 | Disposed |
| Jan. 21, 2022 | MKSI | Restricted Stock Unit | Common Stock (2,323) | — | — | 2,323 | Acquired |
| April 19, 2021 | MKSI | Restricted Stock Unit | Common Stock (934) | — | — | 934 | Disposed |
| April 15, 2021 | MKSI | Restricted Stock Unit | Common Stock (787) | — | — | 787 | Disposed |
| April 13, 2021 | MKSI | Restricted Stock Unit | Common Stock (627) | — | — | 627 | Disposed |
| Feb. 16, 2021 | MKSI | Restricted Stock Unit | Common Stock (1,161) | — | — | 1,161 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 4 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Feb. 9, 2021 | MKSI | Common Stock | 3,636 | Direct |
| Feb. 9, 2021 | MKSI | Restricted Stock Unit→ Common Stock (627) | 627 | Direct |
| Feb. 9, 2021 | MKSI | Restricted Stock Unit→ Common Stock (1,574) | 1,574 | Direct |
| Feb. 9, 2021 | MKSI | Restricted Stock Unit→ Common Stock (2,804) | 2,804 | Direct |