Real time Form 13D and 13G transaction reports:
- Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
- Due to inconsistent filing format, it is highly recommended that you read the orignal filing form.
- Shares have beem adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
| Reported DateTime | Transaction Date | Type | Company Symbol | Filed By Symbol | Shares Owned % Owned | Shares Vs. Prev Report | View |
| 2026-05-06 11:30 am Sale | 2026-03-31 | 13G | MKS INC. MKSI | FMR LLC | 2,243,989 3.300% | -1,807,194 (-44.61%) | Filing History |
| 2026-04-30 11:43 am Purchase | 2026-03-31 | 13G | MKS INC. MKSI | VANGUARD CAPITAL MANAGEMENT LLC | 3,528,836 5.240% | 3,528,836 (New Position) | Filing History |
| 2026-04-29 2:08 pm Purchase | 2026-03-31 | 13G | MKS INC. MKSI | VANGUARD PORTFOLIO MANAGEMENT LLC | 3,700,062 5.490% | 3,700,062 (New Position) | Filing History |
| 2026-03-27 10:49 am Sale | 2026-03-13 | 13G | MKS INC. MKSI | VANGUARD GROUP INC | 0 0.000% | -7,752,097 (Position Closed) | Filing History |
| 2026-02-17 10:26 am Sale | 2025-12-31 | 13G | MKS INC. MKSI | T. Rowe Price Associates, Inc. | 2,753,871 4.100% | -1,375,257 (-33.31%) | Filing History |
| 2026-02-12 4:01 pm Purchase | 2025-12-31 | 13G | MKS INC. MKSI | Invesco Ltd. IVZ | 4,394,205 6.500% | 4,394,205 (New Position) | Filing History |
| 2025-10-31 11:05 am Purchase | 2025-09-30 | 13G | MKS INC. MKSI | VANGUARD GROUP INC | 7,752,097 11.540% | 859,156 (+12.46%) | Filing History |
| 2025-10-17 6:13 pm Sale | 2025-09-30 | 13G | MKS INC. MKSI | BlackRock Inc. BLK | 5,887,663 8.800% | -1,204,265 (-16.98%) | Filing History |
| 2025-08-14 1:07 pm Purchase | 2025-06-30 | 13G | MKS INC. MKSI | T. Rowe Price Associates, Inc. | 4,129,128 6.200% | 787,700 (+23.57%) | Filing History |
| 2025-08-08 12:29 pm Unchanged | 2025-06-30 | 13G | MKS INC. MKSI | VICTORY CAPITAL MANAGEMENT INC | 3,787,201 5.640% | 0 (Unchanged) | Filing History |
| 2025-08-08 09:53 am Sale | 2025-06-30 | 13G | MKS INC. MKSI | VICTORY CAPITAL MANAGEMENT INC | 3,787,201 5.640% | -703,578 (-15.67%) | Filing History |
| 2025-02-14 09:44 am Sale | 2024-12-31 | 13G | MKS INC. MKSI | T. Rowe Price Associates, Inc. | 3,341,428 5.000% | -937,206 (-21.90%) | Filing History |
| 2025-02-07 7:38 pm Sale | 2024-09-30 | 13G | MKS INC. MKSI | Capital International Investors | 3,160,389 4.700% | -508,868 (-13.87%) | Filing History |
| 2024-11-14 1:22 pm Sale | 2024-09-30 | 13G | MKS INC. MKSI | T. Rowe Price Associates, Inc. | 4,278,634 6.400% | -451,760 (-9.55%) | Filing History |
| 2024-11-07 11:42 am Purchase | 2024-10-31 | 13G | MKS INC. MKSI | BlackRock Inc. BLK | 7,091,928 10.200% | 913,303 (+14.78%) | Filing History |
| 2024-09-10 5:08 pm Sale | 2024-08-31 | 13G | MKS INC. MKSI | T. Rowe Price Associates, Inc. | 4,730,394 7.000% | -3,355,428 (-41.50%) | Filing History |
| 2024-02-13 5:09 pm Purchase | 2023-12-29 | 13G | MKS INC. MKSI | VANGUARD GROUP INC | 6,892,941 10.310% | 197,494 (+2.95%) | Filing History |
| 2024-02-12 5:45 pm Sale | 2023-12-31 | 13G | MKS INC. MKSI | Carlyle Group Inc. CG | 0 0.000% | -8,482,732 (Position Closed) | Filing History |
| 2024-02-09 6:03 pm Sale | 2024-02-07 | 13G | MKS INC. MKSI | Capital International Investors | 3,669,257 5.500% | -3,159,506 (-46.27%) | Filing History |
| 2024-02-09 09:28 am Purchase | 2024-02-08 | 13G | MKS INC. MKSI | FMR LLC | 4,051,183 6.057% | 1,714,941 (+73.41%) | Filing History |