Michelle M Mccarthy
Insider
First SEC filing: June 8, 2026 · Latest: June 8, 2026
Insider at
Insider transactions
0 buys (P)
3 sells (S)
Net: $-1,133,776
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 |
|---|---|---|---|---|---|---|---|---|---|
| June 5, 2026 | MKSI | S 10b5-1 | 2,434 | $315.23 | $767,270 | 2 Direct | -99.92% | Disposed | -11.7% (price as of 2026-10-05) |
| April 15, 2026 | MKSI | M | 1,736 | · | · | 7,388 Direct | -19.03% | Disposed | (price as of 2026-10-05) |
| April 15, 2026 | MKSI | M | 1,107 | · | · | 9,124 Direct | -10.82% | Disposed | (price as of 2026-10-05) |
| April 15, 2026 | MKSI | M | 968 | · | · | 10,231 Direct | -8.64% | Disposed | (price as of 2026-10-05) |
| April 15, 2026 | MKSI | A | 1,673 | · | · | 11,199 Direct | +17.56% | Acquired | (price as of 2026-10-05) |
| April 15, 2026 | MKSI | F | 1,375 | $274.15 | $376,956 | 2,436 Direct | -36.08% | Disposed | 1.5% (price as of 2026-10-05) |
| April 15, 2026 | MKSI | M | 1,736 | · | · | 3,811 Direct | +83.66% | Acquired | (price as of 2026-10-05) |
| April 15, 2026 | MKSI | M | 1,107 | · | · | 2,075 Direct | +114.36% | Acquired | (price as of 2026-10-05) |
| April 15, 2026 | MKSI | M | 968 | · | · | 968 Direct | · | Acquired | (price as of 2026-10-05) |
| Feb. 20, 2026 | MKSI | S | 816 | $250.35 | $204,286 | 0 Direct | -100.00% | Disposed | 11.2% (price as of 2026-10-05) |
| Feb. 20, 2026 | MKSI | S | 650 | $249.57 | $162,220 | 816 Direct | -44.34% | Disposed | 11.5% (price as of 2026-10-05) |
| April 15, 2025 | MKSI | A | 5,210 | · | · | 9,526 Direct | +120.71% | Acquired | (price as of 2026-10-05) |
| April 15, 2025 | MKSI | M | 1,106 | · | · | 4,316 Direct | -20.40% | Disposed | (price as of 2026-10-05) |
| April 15, 2025 | MKSI | M | 968 | · | · | 5,422 Direct | -15.15% | Disposed | (price as of 2026-10-05) |
| April 15, 2025 | MKSI | F | 608 | $68.48 | $41,636 | 1,466 Direct | -29.32% | Disposed | 306.4% (price as of 2026-10-05) |
| April 15, 2025 | MKSI | M | 1,106 | · | · | 2,074 Direct | +114.26% | Acquired | (price as of 2026-10-05) |
| April 15, 2025 | MKSI | M | 968 | · | · | 968 Direct | · | Acquired | (price as of 2026-10-05) |
| Aug. 15, 2024 | MKSI | A | 166 | · | · | 6,390 Direct | +2.67% | Acquired | (price as of 2026-10-05) |
| April 15, 2024 | MKSI | A | 3,320 | · | · | 6,224 Direct | +114.33% | Acquired | (price as of 2026-10-05) |
| April 15, 2024 | MKSI | A | 2,905 | · | · | 2,905 Direct | · | Acquired | (price as of 2026-10-05) |
| Dec. 19, 2023 | MRCY | S | 231 | $36.90 | $8,524 | 32,724 Direct | -0.70% | Disposed | 128.2% (price as of 2026-10-05) |
| Aug. 18, 2023 | MRCY | S | 292 | $37.45 | $10,935 | 32,955 Direct | -0.88% | Disposed | 124.8% (price as of 2026-10-05) |
| Aug. 17, 2023 | MRCY | A | 9,571 | · | · | 33,247 Direct | +40.42% | Acquired | (price as of 2026-10-05) |
| Aug. 17, 2023 | MRCY | S | 287 | $36.83 | $10,570 | 23,676 Direct | -1.20% | Disposed | 128.6% (price as of 2026-10-05) |
| Aug. 16, 2023 | MRCY | S | 227 | $35.27 | $8,006 | 23,963 Direct | -0.94% | Disposed | 138.7% (price as of 2026-10-05) |
| July 17, 2023 | MRCY | A | 5,767 | · | · | 24,190 Direct | +31.30% | Acquired | (price as of 2026-10-05) |
| Feb. 22, 2023 | MRCY | S | 273 | $52.81 | $14,417 | 18,423 Direct | -1.46% | Disposed | 59.4% (price as of 2026-10-05) |
| Feb. 21, 2023 | MRCY | S | 273 | $52.98 | $14,464 | 18,696 Direct | -1.44% | Disposed | 58.9% (price as of 2026-10-05) |
| Feb. 17, 2023 | MRCY | S | 268 | $53.89 | $14,443 | 18,969 Direct | -1.39% | Disposed | 56.2% (price as of 2026-10-05) |
| Feb. 16, 2023 | MRCY | S | 266 | $54.37 | $14,462 | 19,237 Direct | -1.36% | Disposed | 54.9% (price as of 2026-10-05) |
| Feb. 15, 2023 | MRCY | A | 3,882 | · | · | 19,503 Direct | +24.85% | Acquired | (price as of 2026-10-05) |
| Dec. 15, 2022 | MRCY | A | 2,714 | · | · | 15,621 Direct | +21.03% | Acquired | (price as of 2026-10-05) |
| Aug. 25, 2022 | MRCY | S | 468 | $51.72 | $24,205 | 12,907 Direct | -3.50% | Disposed | 62.8% (price as of 2026-10-05) |
| Aug. 19, 2022 | MRCY | S | 1,652 | $51.23 | $84,632 | 13,375 Direct | -10.99% | Disposed | 64.4% (price as of 2026-10-05) |
| Aug. 17, 2022 | MRCY | S | 321 | $51.21 | $16,438 | 15,117 Direct | -2.08% | Disposed | 64.4% (price as of 2026-10-05) |
| Aug. 17, 2022 | MRCY | S | 90 | $51.51 | $4,636 | 15,027 Direct | -0.60% | Disposed | 63.5% (price as of 2026-10-05) |
| Aug. 16, 2022 | MRCY | S | 418 | $51.23 | $21,414 | 15,624 Direct | -2.61% | Disposed | 64.4% (price as of 2026-10-05) |
| Aug. 16, 2022 | MRCY | S | 186 | $51.13 | $9,510 | 15,438 Direct | -1.19% | Disposed | 64.7% (price as of 2026-10-05) |
| Aug. 15, 2022 | MRCY | S | 74 | $52.28 | $3,869 | 16,805 Direct | -0.44% | Disposed | 61.1% (price as of 2026-10-05) |
| Aug. 15, 2022 | MRCY | S | 439 | $51.34 | $22,538 | 16,366 Direct | -2.61% | Disposed | 64.0% (price as of 2026-10-05) |
| Aug. 15, 2022 | MRCY | S | 297 | $51.31 | $15,239 | 16,069 Direct | -1.81% | Disposed | 64.1% (price as of 2026-10-05) |
| Aug. 15, 2022 | MRCY | S | 27 | $52.28 | $1,412 | 16,042 Direct | -0.17% | Disposed | 61.1% (price as of 2026-10-05) |
| Aug. 9, 2022 | MRCY | S | 830 | $50.03 | $41,525 | 16,879 Direct | -4.69% | Disposed | 68.3% (price as of 2026-10-05) |
| March 15, 2022 | MRCY | F | 764 | $65.12 | $49,752 | 17,709 Direct | -4.14% | Disposed | 29.3% (price as of 2026-10-05) |
| Feb. 15, 2022 | MRCY | A | 7,818 | · | · | 18,473 Direct | +73.37% | Acquired | (price as of 2026-10-05) |
| Dec. 1, 2021 | MRCY | S | 1,506 | $49.60 | $74,698 | 10,655 Direct | -12.38% | Disposed | 69.8% (price as of 2026-10-05) |
| Aug. 17, 2021 | MRCY | F | 86 | $51.83 | $4,457 | 12,466 Direct | -0.69% | Disposed | 62.5% (price as of 2026-10-05) |
| Aug. 17, 2021 | MRCY | F | 305 | $51.83 | $15,808 | 12,161 Direct | -2.45% | Disposed | 62.5% (price as of 2026-10-05) |
| Aug. 16, 2021 | MRCY | A | 3,499 | · | · | 12,977 Direct | +36.92% | Acquired | (price as of 2026-10-05) |
| Aug. 16, 2021 | MRCY | A | 388 | · | · | 13,365 Direct | +2.99% | Acquired | (price as of 2026-10-05) |
| Aug. 16, 2021 | MRCY | F | 499 | $53.13 | $26,512 | 12,866 Direct | -3.73% | Disposed | 58.5% (price as of 2026-10-05) |
| Aug. 16, 2021 | MRCY | F | 314 | $53.13 | $16,683 | 12,552 Direct | -2.44% | Disposed | 58.5% (price as of 2026-10-05) |
| June 3, 2021 | MRCY | S | 801 | $65.32 | $52,321 | 9,478 Direct | -7.79% | Disposed | 28.9% (price as of 2026-10-05) |
| March 16, 2021 | MRCY | S | 793 | $69.32 | $54,971 | 10,279 Direct | -7.16% | Disposed | 21.5% (price as of 2026-10-05) |
| Aug. 21, 2020 | MRCY | S | 975 | $76.14 | $74,236 | 11,072 Direct | -8.09% | Disposed | 10.6% (price as of 2026-10-05) |
| Aug. 19, 2020 | MRCY | S | 12 | $77.13 | $926 | 11,280 Direct | -0.11% | Disposed | 9.2% (price as of 2026-10-05) |
| Aug. 18, 2020 | MRCY | S | 456 | $77.34 | $35,267 | 11,292 Direct | -3.88% | Disposed | 8.9% (price as of 2026-10-05) |
| Aug. 17, 2020 | MRCY | A | 767 | · | · | 12,047 Direct | +6.80% | Acquired | (price as of 2026-10-05) |
| Aug. 17, 2020 | MRCY | A | 2,748 | · | · | 12,136 Direct | +29.27% | Acquired | (price as of 2026-10-05) |
| Aug. 17, 2020 | MRCY | S | 388 | $78.64 | $30,512 | 11,748 Direct | -3.20% | Disposed | 7.1% (price as of 2026-10-05) |
| May 4, 2020 | MRCY | S | 847 | $83.66 | $70,860 | 9,388 Direct | -8.28% | Disposed | 0.6% (price as of 2026-10-05) |
| March 15, 2020 | MRCY | F | 747 | $70.34 | $52,544 | 10,235 Direct | -6.80% | Disposed | 19.7% (price as of 2026-10-05) |
| Aug. 19, 2019 | MRCY | S | 624 | $84.99 | $53,034 | 10,982 Direct | -5.38% | Disposed | -0.9% (price as of 2026-10-05) |
| Aug. 15, 2019 | MRCY | F | 499 | $82.84 | $41,337 | 8,774 Direct | -5.38% | Disposed | 1.6% (price as of 2026-10-05) |
| Aug. 15, 2019 | MRCY | A | 2,832 | · | · | 11,606 Direct | +32.28% | Acquired | (price as of 2026-10-05) |
| May 30, 2019 | MRCY | S | 838 | $69.26 | $58,040 | 9,273 Direct | -8.29% | Disposed | 21.6% (price as of 2026-10-05) |
| March 15, 2019 | MRCY | F | 756 | $62.21 | $47,031 | 10,111 Direct | -6.96% | Disposed | 35.3% (price as of 2026-10-05) |
| Aug. 15, 2018 | MRCY | A | 4,491 | · | · | 10,867 Direct | +70.44% | Acquired | (price as of 2026-10-05) |
| March 15, 2018 | MRCY | A | 6,376 | · | · | 6,376 Direct | · | Acquired | (price as of 2026-10-05) |
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 |
|---|---|---|---|---|---|---|---|
| April 15, 2026 | MKSI | Restricted Stock Unit | Common Stock | · | · | 1,736 | Disposed |
| April 15, 2026 | MKSI | Restricted Stock Unit | Common Stock | · | · | 1,107 | Disposed |
| April 15, 2026 | MKSI | Restricted Stock Unit | Common Stock | · | · | 968 | Disposed |
| April 15, 2026 | MKSI | Restricted Stock Unit | Common Stock | · | · | 1,673 | Acquired |
| April 15, 2025 | MKSI | Restricted Stock Unit | Common Stock | · | · | 5,210 | Acquired |
| April 15, 2025 | MKSI | Restricted Stock Unit | Common Stock | · | · | 1,106 | Disposed |
| April 15, 2025 | MKSI | Restricted Stock Unit | Common Stock | · | · | 968 | Disposed |
| Aug. 15, 2024 | MKSI | Restricted Stock Unit | Common Stock | · | · | 166 | Acquired |
| April 15, 2024 | MKSI | Restricted Stock Unit | Common Stock | · | · | 3,320 | Acquired |
| April 15, 2024 | MKSI | Restricted Stock Unit | Common Stock | · | · | 2,905 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).