Eric Robert Taranto
Insider
First SEC filing: Feb. 9, 2021 · Latest: Feb. 9, 2021
Insider at
Insider transactions
0 buys (P)
3 sells (S)
Net: $-2,278,506
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 11, 2026 | MKSI | S | 2,849 | $319.93 | $911,481 | 12,596 Direct | -18.45% | Disposed | -12.7% (price as of 2026-10-02) |
| March 6, 2026 | MKSI | S | 4,568 | $220.52 | $1,007,335 | 15,445 Direct | -22.83% | Disposed | 26.6% (price as of 2026-10-02) |
| Feb. 20, 2026 | MKSI | S | 1,453 | $247.55 | $359,690 | 20,013 Direct | -6.77% | Disposed | 12.8% (price as of 2026-10-02) |
| Feb. 17, 2026 | MKSI | M | 1,303 | · | · | 8,029 Direct | -13.96% | Disposed | (price as of 2026-10-02) |
| Feb. 17, 2026 | MKSI | M | 1,167 | · | · | 9,332 Direct | -11.12% | Disposed | (price as of 2026-10-02) |
| Feb. 17, 2026 | MKSI | M | 976 | · | · | 10,499 Direct | -8.51% | Disposed | (price as of 2026-10-02) |
| Feb. 17, 2026 | MKSI | M | 348 | · | · | 11,475 Direct | -2.94% | Disposed | (price as of 2026-10-02) |
| Feb. 17, 2026 | MKSI | M | 914 | · | · | 11,823 Direct | -7.18% | Disposed | (price as of 2026-10-02) |
| Feb. 17, 2026 | MKSI | M | 1,764 | · | · | 12,737 Direct | -12.16% | Disposed | (price as of 2026-10-02) |
| Feb. 17, 2026 | MKSI | A | 1,759 | · | · | 14,502 Direct | +13.80% | Acquired | (price as of 2026-10-02) |
| Feb. 17, 2026 | MKSI | F | 2,712 | $260.74 | $707,127 | 21,465 Direct | -11.22% | Disposed | 7.1% (price as of 2026-10-02) |
| Feb. 17, 2026 | MKSI | M | 1,303 | · | · | 24,177 Direct | +5.70% | Acquired | (price as of 2026-10-02) |
| Feb. 17, 2026 | MKSI | M | 1,167 | · | · | 22,874 Direct | +5.38% | Acquired | (price as of 2026-10-02) |
| Feb. 17, 2026 | MKSI | M | 976 | · | · | 21,707 Direct | +4.71% | Acquired | (price as of 2026-10-02) |
| Feb. 17, 2026 | MKSI | M | 348 | · | · | 20,731 Direct | +1.71% | Acquired | (price as of 2026-10-02) |
| Feb. 17, 2026 | MKSI | M | 914 | · | · | 20,382 Direct | +4.69% | Acquired | (price as of 2026-10-02) |
| Feb. 17, 2026 | MKSI | M | 1,764 | · | · | 19,468 Direct | +9.96% | Acquired | (price as of 2026-10-02) |
| Feb. 8, 2026 | MKSI | A | 3,504 | · | · | 12,743 Direct | +37.93% | Acquired | (price as of 2026-10-02) |
| Feb. 18, 2025 | MKSI | M | 975 | · | · | 9,238 Direct | -9.55% | Disposed | (price as of 2026-10-02) |
| Feb. 18, 2025 | MKSI | M | 348 | · | · | 10,213 Direct | -3.30% | Disposed | (price as of 2026-10-02) |
| Feb. 18, 2025 | MKSI | M | 914 | · | · | 10,561 Direct | -7.97% | Disposed | (price as of 2026-10-02) |
| Feb. 18, 2025 | MKSI | M | 1,764 | · | · | 11,475 Direct | -13.32% | Disposed | (price as of 2026-10-02) |
| Feb. 18, 2025 | MKSI | M | 805 | · | · | 13,239 Direct | -5.73% | Disposed | (price as of 2026-10-02) |
| Feb. 18, 2025 | MKSI | M | 1,119 | · | · | 14,044 Direct | -7.38% | Disposed | (price as of 2026-10-02) |
| Feb. 18, 2025 | MKSI | A | 3,911 | · | · | 15,162 Direct | +34.76% | Acquired | (price as of 2026-10-02) |
| Feb. 18, 2025 | MKSI | F | 1,760 | $103.67 | $182,459 | 17,467 Direct | -9.15% | Disposed | 169.3% (price as of 2026-10-02) |
| Feb. 18, 2025 | MKSI | M | 975 | · | · | 19,227 Direct | +5.34% | Acquired | (price as of 2026-10-02) |
| Feb. 18, 2025 | MKSI | M | 348 | · | · | 18,252 Direct | +1.94% | Acquired | (price as of 2026-10-02) |
| Feb. 18, 2025 | MKSI | M | 914 | · | · | 17,904 Direct | +5.38% | Acquired | (price as of 2026-10-02) |
| Feb. 18, 2025 | MKSI | M | 1,764 | · | · | 16,990 Direct | +11.59% | Acquired | (price as of 2026-10-02) |
| Feb. 18, 2025 | MKSI | M | 805 | · | · | 15,226 Direct | +5.58% | Acquired | (price as of 2026-10-02) |
| Feb. 18, 2025 | MKSI | M | 1,119 | · | · | 14,421 Direct | +8.41% | Acquired | (price as of 2026-10-02) |
| Feb. 10, 2025 | MKSI | A | 1,045 | · | · | 11,251 Direct | +10.24% | Acquired | (price as of 2026-10-02) |
| Feb. 15, 2024 | MKSI | M | 914 | · | · | 10,206 Direct | -8.22% | Disposed | (price as of 2026-10-02) |
| Feb. 15, 2024 | MKSI | M | 1,764 | · | · | 11,120 Direct | -13.69% | Disposed | (price as of 2026-10-02) |
| Feb. 15, 2024 | MKSI | M | 804 | · | · | 12,884 Direct | -5.87% | Disposed | (price as of 2026-10-02) |
| Feb. 15, 2024 | MKSI | M | 1,118 | · | · | 13,688 Direct | -7.55% | Disposed | (price as of 2026-10-02) |
| Feb. 15, 2024 | MKSI | M | 387 | · | · | 14,806 Direct | -2.55% | Disposed | (price as of 2026-10-02) |
| Feb. 15, 2024 | MKSI | M | 775 | · | · | 15,194 Direct | -4.85% | Disposed | (price as of 2026-10-02) |
| Feb. 15, 2024 | MKSI | A | 2,927 | · | · | 15,969 Direct | +22.44% | Acquired | (price as of 2026-10-02) |
| Feb. 15, 2024 | MKSI | F | 1,694 | $122.15 | $206,922 | 13,055 Direct | -11.49% | Disposed | 128.5% (price as of 2026-10-02) |
| Feb. 15, 2024 | MKSI | M | 914 | · | · | 14,749 Direct | +6.61% | Acquired | (price as of 2026-10-02) |
| Feb. 15, 2024 | MKSI | M | 1,764 | · | · | 13,835 Direct | +14.61% | Acquired | (price as of 2026-10-02) |
| Feb. 15, 2024 | MKSI | M | 804 | · | · | 12,071 Direct | +7.14% | Acquired | (price as of 2026-10-02) |
| Feb. 15, 2024 | MKSI | M | 1,118 | · | · | 11,267 Direct | +11.02% | Acquired | (price as of 2026-10-02) |
| Feb. 15, 2024 | MKSI | M | 387 | · | · | 10,149 Direct | +3.96% | Acquired | (price as of 2026-10-02) |
| Feb. 15, 2024 | MKSI | M | 775 | · | · | 9,761 Direct | +8.62% | Acquired | (price as of 2026-10-02) |
| Feb. 5, 2024 | MKSI | A | 5,292 | · | · | 13,042 Direct | +68.28% | Acquired | (price as of 2026-10-02) |
| April 17, 2023 | MKSI | M | 935 | · | · | 7,750 Direct | -10.77% | Disposed | (price as of 2026-10-02) |
| April 17, 2023 | MKSI | F | 275 | $82.38 | $22,654 | 8,710 Direct | -3.06% | Disposed | 238.9% (price as of 2026-10-02) |
| April 17, 2023 | MKSI | M | 935 | · | · | 8,985 Direct | +11.61% | Acquired | (price as of 2026-10-02) |
| Feb. 15, 2023 | MKSI | M | 804 | · | · | 8,684 Direct | -8.47% | Disposed | (price as of 2026-10-02) |
| Feb. 15, 2023 | MKSI | M | 1,117 | · | · | 9,488 Direct | -10.53% | Disposed | (price as of 2026-10-02) |
| Feb. 15, 2023 | MKSI | M | 387 | · | · | 10,605 Direct | -3.52% | Disposed | (price as of 2026-10-02) |
| Feb. 15, 2023 | MKSI | M | 774 | · | · | 10,992 Direct | -6.58% | Disposed | (price as of 2026-10-02) |
| Feb. 15, 2023 | MKSI | A | 2,742 | · | · | 11,766 Direct | +30.39% | Acquired | (price as of 2026-10-02) |
| Feb. 15, 2023 | MKSI | F 10b5-1 | 906 | $100.29 | $90,863 | 8,051 Direct | -10.11% | Disposed | 178.3% (price as of 2026-10-02) |
| Feb. 15, 2023 | MKSI | M | 804 | · | · | 8,957 Direct | +9.86% | Acquired | (price as of 2026-10-02) |
| Feb. 15, 2023 | MKSI | M | 1,117 | · | · | 8,153 Direct | +15.88% | Acquired | (price as of 2026-10-02) |
| Feb. 15, 2023 | MKSI | M | 387 | · | · | 7,036 Direct | +5.82% | Acquired | (price as of 2026-10-02) |
| Feb. 15, 2023 | MKSI | M | 774 | · | · | 6,649 Direct | +13.17% | Acquired | (price as of 2026-10-02) |
| Feb. 8, 2023 | MKSI | A | 3,354 | · | · | 9,024 Direct | +59.15% | Acquired | (price as of 2026-10-02) |
| April 29, 2022 | MKSI | A | 2,413 | · | · | 5,671 Direct | +74.06% | Acquired | (price as of 2026-10-02) |
| April 18, 2022 | MKSI | M | 935 | · | · | 3,258 Direct | -22.30% | Disposed | (price as of 2026-10-02) |
| April 18, 2022 | MKSI | M | 787 | · | · | 4,193 Direct | -15.80% | Disposed | (price as of 2026-10-02) |
| April 18, 2022 | MKSI | F 10b5-1 | 506 | $114.99 | $58,185 | 5,697 Direct | -8.16% | Disposed | 142.8% (price as of 2026-10-02) |
| April 18, 2022 | MKSI | M | 935 | · | · | 6,203 Direct | +17.75% | Acquired | (price as of 2026-10-02) |
| April 18, 2022 | MKSI | M | 787 | · | · | 5,268 Direct | +17.56% | Acquired | (price as of 2026-10-02) |
| Feb. 15, 2022 | MKSI | M | 387 | · | · | 4,980 Direct | -7.21% | Disposed | (price as of 2026-10-02) |
| Feb. 15, 2022 | MKSI | M | 774 | · | · | 5,367 Direct | -12.60% | Disposed | (price as of 2026-10-02) |
| Feb. 15, 2022 | MKSI | F 10b5-1 | 342 | $152.55 | $52,172 | 4,481 Direct | -7.09% | Disposed | 83.0% (price as of 2026-10-02) |
| Feb. 15, 2022 | MKSI | M | 387 | · | · | 4,823 Direct | +8.72% | Acquired | (price as of 2026-10-02) |
| Feb. 15, 2022 | MKSI | M | 774 | · | · | 4,436 Direct | +21.14% | Acquired | (price as of 2026-10-02) |
| Jan. 21, 2022 | MKSI | A | 2,323 | · | · | 6,141 Direct | +60.84% | Acquired | (price as of 2026-10-02) |
| April 29, 2021 | MKSI | S | 1,788 | $185.29 | $331,299 | 3,506 Direct | -33.77% | Disposed | 50.7% (price as of 2026-10-02) |
| April 19, 2021 | MKSI | M | 934 | · | · | 3,818 Direct | -19.65% | Disposed | (price as of 2026-10-02) |
| April 19, 2021 | MKSI | F 10b5-1 | 275 | $181.04 | $49,786 | 5,294 Direct | -4.94% | Disposed | 54.2% (price as of 2026-10-02) |
| April 19, 2021 | MKSI | M | 934 | · | · | 5,569 Direct | +20.15% | Acquired | (price as of 2026-10-02) |
| April 15, 2021 | MKSI | M | 787 | · | · | 4,752 Direct | -14.21% | Disposed | (price as of 2026-10-02) |
| April 15, 2021 | MKSI | F 10b5-1 | 231 | $188.26 | $43,488 | 4,635 Direct | -4.75% | Disposed | 48.3% (price as of 2026-10-02) |
| April 15, 2021 | MKSI | M | 787 | · | · | 4,866 Direct | +19.29% | Acquired | (price as of 2026-10-02) |
| April 13, 2021 | MKSI | M | 627 | · | · | 5,539 Direct | -10.17% | Disposed | (price as of 2026-10-02) |
| April 13, 2021 | MKSI | F 10b5-1 | 185 | $186.52 | $34,506 | 4,079 Direct | -4.34% | Disposed | 49.7% (price as of 2026-10-02) |
| April 13, 2021 | MKSI | M | 627 | · | · | 4,264 Direct | +17.24% | Acquired | (price as of 2026-10-02) |
| Feb. 16, 2021 | MKSI | A | 1,161 | · | · | 6,166 Direct | +23.20% | Acquired | (price as of 2026-10-02) |
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 | Disposed |
| Feb. 17, 2026 | MKSI | Restricted Stock Unit | Common Stock | · | · | 1,167 | Disposed |
| Feb. 17, 2026 | MKSI | Restricted Stock Unit | Common Stock | · | · | 976 | Disposed |
| Feb. 17, 2026 | MKSI | Restricted Stock Unit | Common Stock | · | · | 348 | Disposed |
| Feb. 17, 2026 | MKSI | Restricted Stock Unit | Common Stock | · | · | 914 | Disposed |
| Feb. 17, 2026 | MKSI | Restricted Stock Unit | Common Stock | · | · | 1,764 | Disposed |
| Feb. 17, 2026 | MKSI | Restricted Stock Unit | Common Stock | · | · | 1,759 | Acquired |
| Feb. 8, 2026 | MKSI | Restricted Stock Unit | Common Stock | · | · | 3,504 | Acquired |
| Feb. 18, 2025 | MKSI | Restricted Stock Unit | Common Stock | · | · | 975 | Disposed |
| Feb. 18, 2025 | MKSI | Restricted Stock Unit | Common Stock | · | · | 348 | Disposed |
| Feb. 18, 2025 | MKSI | Restricted Stock Unit | Common Stock | · | · | 914 | Disposed |
| Feb. 18, 2025 | MKSI | Restricted Stock Unit | Common Stock | · | · | 1,764 | Disposed |
| Feb. 18, 2025 | MKSI | Restricted Stock Unit | Common Stock | · | · | 805 | Disposed |
| Feb. 18, 2025 | MKSI | Restricted Stock Unit | Common Stock | · | · | 1,119 | Disposed |
| Feb. 18, 2025 | MKSI | Restricted Stock Unit | Common Stock | · | · | 3,911 | Acquired |
| Feb. 10, 2025 | MKSI | Restricted Stock Unit | Common Stock | · | · | 1,045 | Acquired |
| Feb. 15, 2024 | MKSI | Restricted Stock Unit | Common Stock | · | · | 914 | Disposed |
| Feb. 15, 2024 | MKSI | Restricted Stock Unit | Common Stock | · | · | 1,764 | Disposed |
| Feb. 15, 2024 | MKSI | Restricted Stock Unit | Common Stock | · | · | 804 | Disposed |
| Feb. 15, 2024 | MKSI | Restricted Stock Unit | Common Stock | · | · | 1,118 | Disposed |
| Feb. 15, 2024 | MKSI | Restricted Stock Unit | Common Stock | · | · | 387 | Disposed |
| Feb. 15, 2024 | MKSI | Restricted Stock Unit | Common Stock | · | · | 775 | Disposed |
| Feb. 15, 2024 | MKSI | Restricted Stock Unit | Common Stock | · | · | 2,927 | Acquired |
| Feb. 5, 2024 | MKSI | Restricted Stock Unit | Common Stock | · | · | 5,292 | Acquired |
| April 17, 2023 | MKSI | Restricted Stock Unit | Common Stock | · | · | 935 | Disposed |
| Feb. 15, 2023 | MKSI | Restricted Stock Unit | Common Stock | · | · | 804 | Disposed |
| Feb. 15, 2023 | MKSI | Restricted Stock Unit | Common Stock | · | · | 1,117 | Disposed |
| Feb. 15, 2023 | MKSI | Restricted Stock Unit | Common Stock | · | · | 387 | Disposed |
| Feb. 15, 2023 | MKSI | Restricted Stock Unit | Common Stock | · | · | 774 | Disposed |
| Feb. 15, 2023 | MKSI | Restricted Stock Unit | Common Stock | · | · | 2,742 | Acquired |
| Feb. 8, 2023 | MKSI | Restricted Stock Unit | Common Stock | · | · | 3,354 | Acquired |
| April 29, 2022 | MKSI | Restricted Stock Unit | Common Stock | · | · | 2,413 | Acquired |
| April 18, 2022 | MKSI | Restricted Stock Unit | Common Stock | · | · | 935 | Disposed |
| April 18, 2022 | MKSI | Restricted Stock Unit | Common Stock | · | · | 787 | Disposed |
| Feb. 15, 2022 | MKSI | Restricted Stock Unit | Common Stock | · | · | 387 | Disposed |
| Feb. 15, 2022 | MKSI | Restricted Stock Unit | Common Stock | · | · | 774 | Disposed |
| Jan. 21, 2022 | MKSI | Restricted Stock Unit | Common Stock | · | · | 2,323 | Acquired |
| April 19, 2021 | MKSI | Restricted Stock Unit | Common Stock | · | · | 934 | Disposed |
| April 15, 2021 | MKSI | Restricted Stock Unit | Common Stock | · | · | 787 | Disposed |
| April 13, 2021 | MKSI | Restricted Stock Unit | Common Stock | · | · | 627 | Disposed |
| Feb. 16, 2021 | MKSI | Restricted Stock Unit | Common Stock | · | · | 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.