Kathleen Flaherty Burke
Known title: Sr. VP, GC & SecretaryCIK: 0001775435
Associated companies
Transaction History
| MKSI | ▼ Sell | Open Market | 4,355 | $1.4M | 5/11/2026 | View on chart |
| MKSI | ▼ Sell | Open Market | 4,254 | $1.1M | 2/20/2026 | View on chart |
| MKSI | ▲ Buy | Option Exercise | 3,451 | — | 2/17/2026 | View on chart |
| MKSI | ▲ Buy | Option Exercise | 1,788 | — | 2/17/2026 | View on chart |
| MKSI | ▲ Buy | Option Exercise | 563 | — | 2/17/2026 | View on chart |
| MKSI | ▲ Buy | Option Exercise | 1,576 | — | 2/17/2026 | View on chart |
| MKSI | ▲ Buy | Option Exercise | 2,336 | — | 2/17/2026 | View on chart |
| MKSI | ▲ Buy | Option Exercise | 2,493 | — | 2/17/2026 | View on chart |
| MKSI | ▼ Sell | Tax Withholding | 5,318 | $1.4M | 2/17/2026 | View on chart |
| MKSI | ▲ Buy | Option Exercise | 158 | — | 10/31/2025 | View on chart |
| MKSI | ▲ Buy | Option Exercise | 52 | — | 10/31/2025 | View on chart |
| MKSI | ▲ Buy | Option Exercise | 82 | — | 10/31/2025 | View on chart |
| MKSI | ▲ Buy | Option Exercise | 144 | — | 10/31/2025 | View on chart |
| MKSI | ▲ Buy | Option Exercise | 341 | — | 10/31/2025 | View on chart |
| MKSI | ▼ Sell | Tax Withholding | 777 | $112K | 10/31/2025 | View on chart |
| MKSI | ▲ Buy | Option Exercise | 2,287 | — | 2/18/2025 | View on chart |
| MKSI | ▲ Buy | Option Exercise | 1,645 | — | 2/18/2025 | View on chart |
| MKSI | ▲ Buy | Option Exercise | 3,608 | — | 2/18/2025 | View on chart |
| MKSI | ▲ Buy | Option Exercise | 1,870 | — | 2/18/2025 | View on chart |
| MKSI | ▲ Buy | Option Exercise | 588 | — | 2/18/2025 | View on chart |
| MKSI | ▲ Buy | Option Exercise | 1,648 | — | 2/18/2025 | View on chart |
| MKSI | ▼ Sell | Tax Withholding | 3,970 | $412K | 2/18/2025 | View on chart |
| MKSI | ▼ Sell | Open Market | 7,411 | $911K | 3/1/2024 | View on chart |
| MKSI | ▲ Buy | Option Exercise | 2,033 | — | 2/15/2024 | View on chart |
| MKSI | ▲ Buy | Option Exercise | 1,017 | — | 2/15/2024 | View on chart |
| MKSI | ▲ Buy | Option Exercise | 2,287 | — | 2/15/2024 | View on chart |
| MKSI | ▲ Buy | Option Exercise | 1,645 | — | 2/15/2024 | View on chart |
| MKSI | ▲ Buy | Option Exercise | 3,608 | — | 2/15/2024 | View on chart |
| MKSI | ▲ Buy | Option Exercise | 1,869 | — | 2/15/2024 | View on chart |
| MKSI | ▼ Sell | Tax Withholding | 4,912 | $600K | 2/15/2024 | View on chart |
| MKSI | ▼ Sell | Open Market | 6,186 | $625K | 8/7/2023 | View on chart |
| MKSI | ▼ Sell | Open Market | 5,377 | $545K | 8/7/2023 | View on chart |
| MKSI | ▲ Buy | Option Exercise | 1,845 | — | 2/15/2023 | View on chart |
| MKSI | ▲ Buy | Option Exercise | 1,281 | — | 2/15/2023 | View on chart |
| MKSI | ▲ Buy | Option Exercise | 2,033 | — | 2/15/2023 | View on chart |
| MKSI | ▲ Buy | Option Exercise | 1,016 | — | 2/15/2023 | View on chart |
| MKSI | ▲ Buy | Option Exercise | 2,286 | — | 2/15/2023 | View on chart |
| MKSI | ▲ Buy | Option Exercise | 1,645 | — | 2/15/2023 | View on chart |
| MKSI | ▼ Sell | Tax Withholding | 3,474 | $348K | 2/15/2023 | View on chart |
| MKSI | ▲ Buy | Option Exercise | 2,179 | — | 10/28/2022 | View on chart |
| MKSI | ▼ Sell | Tax Withholding | 967 | $82K | 10/28/2022 | View on chart |
| MKSI | ▲ Buy | Option Exercise | 1,574 | — | 2/15/2022 | View on chart |
| MKSI | ▲ Buy | Option Exercise | 1,844 | — | 2/15/2022 | View on chart |
| MKSI | ▲ Buy | Option Exercise | 1,281 | — | 2/15/2022 | View on chart |
| MKSI | ▲ Buy | Option Exercise | 2,032 | — | 2/15/2022 | View on chart |
| MKSI | ▲ Buy | Option Exercise | 1,016 | — | 2/15/2022 | View on chart |
| MKSI | ▼ Sell | Tax Withholding | 3,708 | $566K | 2/15/2022 | View on chart |
| MKSI | ▲ Buy | Option Exercise | 1,291 | — | 2/15/2022 | View on chart |
| MKSI | ▲ Buy | Option Exercise | 2,179 | — | 10/28/2021 | View on chart |
| MKSI | ▼ Sell | Tax Withholding | 967 | $141K | 10/28/2021 | View on chart |