MKS Inc. (MKSI)
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Learn moreInsider Purchases Last 6 Months
| Shares | Transactions | |
|---|---|---|
|
Purchases
|
5,473 | 7 |
|
Sales
|
78,135 | 18 |
|
Net Shares Purchased (Sold)
|
-72,662 | 25 |
|
Total Insider Shares Held
|
326.59k | -- |
|
% Net Shares Purchased (Sold)
|
-18.20% | -- |
Net Institutional Purchases Prior Quarter to Latest Quarter
| Shares | |
|---|---|
| Net Shares Purchased (Sold) | -9,472,998 |
| % Change in Institutional Shares Held | -12.97% |
Insider Transactions Reported - Last Two Years
| Insider | Transaction | Type | Value | Date |
|---|---|---|---|---|
| MORA ELIZABETH A Director |
Sale at price 250.96 per share. | Direct | 75,288 | Sep 1, 2026 |
| LEE JOHN TSENG-CHUNG Chief Executive Officer |
Sale at price 302.01 per share. | Direct | 3,020,100 | Aug 14, 2026 |
| WILLIAMS JOHN EDWARD Officer |
Sale at price 288.31 per share. | Direct | 131,758 | Aug 3, 2026 |
| SCHREINER JAMES ALAN Chief Operating Officer |
Sale at price 345.52 - 347.00 per share. | Direct | 1,210,370 | Jun 12, 2026 |
| SCHREINER JAMES ALAN Chief Operating Officer |
Sale at price 317.42 per share. | Direct | 247,905 | Jun 10, 2026 |
| MCCARTHY MICHELLE M Officer |
Sale at price 315.23 per share. | Direct | 767,270 | Jun 5, 2026 |
| MORA ELIZABETH A Director |
Sale at price 318.02 per share. | Direct | 95,406 | Jun 1, 2026 |
| HENRY DAVID PHILIP Officer |
Sale at price 314.43 per share. | Direct | 1,886,583 | Jun 1, 2026 |
| COLELLA GERARD G Director |
Sale at price 330.38 - 338.58 per share. | Indirect | 6,668,075 | May 27, 2026 |
| DONAHUE JOSEPH B Director |
Sale at price 327.95 per share. | Direct | 688,703 | May 27, 2026 |
| HENRY DAVID PHILIP Officer |
Sale at price 330.50 per share. | Direct | 826,250 | May 26, 2026 |
| MAYAMPURATH RAMAKUMAR Chief Financial Officer |
Sale at price 315.48 per share. | Direct | 2,779,379 | May 22, 2026 |
| LEE JOHN TSENG-CHUNG Chief Executive Officer |
Sale at price 315.48 per share. | Direct | 3,154,800 | May 22, 2026 |
| CANNONE PETER J III Director |
Sale at price 303.40 per share. | Direct | 409,590 | May 18, 2026 |
| MOLONEY JACQUELINE F Director |
Sale at price 312.20 per share. | Direct | 312,197 | May 14, 2026 |
| MOLONEY JACQUELINE F Director |
Sale at price 318.99 per share. | Direct | 446,586 | May 13, 2026 |
| JABRE WISSAM GEORGES Director |
Stock Award(Grant) at price 0.00 per share. | Direct | 0 | May 11, 2026 |
| DONAHUE JOSEPH B Director |
Stock Award(Grant) at price 0.00 per share. | Direct | 0 | May 11, 2026 |
| MOLONEY JACQUELINE F Director |
Stock Award(Grant) at price 0.00 per share. | Direct | 0 | May 11, 2026 |
| BATRA RAJEEV Director |
Stock Award(Grant) at price 0.00 per share. | Direct | 0 | May 11, 2026 |
| COLELLA GERARD G Director |
Stock Award(Grant) at price 0.00 per share. | Direct | 0 | May 11, 2026 |
| MORA ELIZABETH A Director |
Stock Award(Grant) at price 0.00 per share. | Direct | 0 | May 11, 2026 |
| CANNONE PETER J III Director |
Stock Award(Grant) at price 0.00 per share. | Direct | 0 | May 11, 2026 |
| BURKE KATHLEEN FLAHERTY General Counsel |
Sale at price 319.94 per share. | Direct | 1,393,317 | May 11, 2026 |
| TARANTO ERIC ROBERT Officer |
Sale at price 319.93 per share. | Direct | 911,328 | May 11, 2026 |
| WILLIAMS JOHN EDWARD Officer |
-- | Direct | -- | Apr 17, 2026 |
| MCCARTHY MICHELLE M Officer |
-- | Direct | -- | Apr 15, 2026 |
| MOLONEY JACQUELINE F Director |
Sale at price 213.77 per share. | Direct | 72,705 | Mar 12, 2026 |
| TARANTO ERIC ROBERT Officer |
Sale at price 220.52 per share. | Direct | 1,007,318 | Mar 6, 2026 |
| MORA ELIZABETH A Director |
Sale at price 239.44 per share. | Direct | 71,832 | Mar 2, 2026 |
| SCHREINER JAMES ALAN Chief Operating Officer |
Sale at price 255.00 per share. | Direct | 1,045,500 | Feb 24, 2026 |
| COLELLA GERARD G Director |
Sale at price 252.90 - 253.97 per share. | Indirect | 5,068,674 | Feb 24, 2026 |
| CANNONE PETER J III Director |
Sale at price 258.06 per share. | Direct | 322,574 | Feb 20, 2026 |
| WILLIAMS JOHN EDWARD Officer |
Sale at price 256.41 per share. | Direct | 523,744 | Feb 20, 2026 |
| MCCARTHY MICHELLE M Officer |
Sale at price 249.57 - 250.35 per share. | Direct | 366,503 | Feb 20, 2026 |
| BURKE KATHLEEN FLAHERTY General Counsel |
Sale at price 250.00 per share. | Direct | 1,063,500 | Feb 20, 2026 |
| TARANTO ERIC ROBERT Officer |
Sale at price 247.55 per share. | Direct | 359,623 | Feb 20, 2026 |
| HENRY DAVID PHILIP Officer |
Sale at price 261.56 per share. | Direct | 523,120 | Feb 20, 2026 |
| LEE JOHN TSENG-CHUNG Chief Executive Officer |
Sale at price 256.05 - 259.70 per share. | Direct | 7,703,242 | Feb 20, 2026 |
| MOLONEY JACQUELINE F Director |
Sale at price 247.55 per share. | Direct | 205,219 | Feb 20, 2026 |
| HENRY DAVID PHILIP Officer |
-- | Direct | -- | Feb 17, 2026 |
| MAYAMPURATH RAMAKUMAR Chief Financial Officer |
-- | Direct | -- | Feb 17, 2026 |
| LEE JOHN TSENG-CHUNG Chief Executive Officer |
-- | Direct | -- | Feb 17, 2026 |
| WILLIAMS JOHN EDWARD Officer |
-- | Direct | -- | Feb 17, 2026 |
| BURKE KATHLEEN FLAHERTY General Counsel |
-- | Direct | -- | Feb 17, 2026 |
| TARANTO ERIC ROBERT Officer |
-- | Direct | -- | Feb 17, 2026 |
| MORA ELIZABETH A Director |
Sale at price 158.81 per share. | Direct | 47,643 | Dec 2, 2025 |
| MAYAMPURATH RAMAKUMAR Chief Financial Officer |
-- | Direct | -- | Nov 17, 2025 |
| LEE JOHN TSENG-CHUNG Chief Executive Officer |
-- | Direct | -- | Oct 31, 2025 |
| BURKE KATHLEEN FLAHERTY General Counsel |
-- | Direct | -- | Oct 31, 2025 |
