MKS INC
Total Trades
46
Buys
3
Sells
43
Largest Trade
$1M+
Insiders
12
Institutional Funds
433
Inst. Value
$1M+
Activist Filings
23
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| Mora Elizabeth | Director | SELL | $50K–$100K | 300 | $239.44 | Mar 3, 2026 |
| Schreiner James Alan | EVP & COO | SELL | $1M+ | 4K | $255.00 | Feb 25, 2026 |
| COLELLA GERALD G | Director | SELL | $1M+ | 20K | $253.43 | Feb 24, 2026 |
| Mora Elizabeth | Director | SELL | $15K–$50K | 300 | $158.81 | Dec 3, 2025 |
| Schreiner James Alan | EVP & COO | SELL | $50K–$100K | 711 | $138.68 | Oct 23, 2025 |
| Moloney Jacqueline F | Director | SELL | $15K–$50K | 300 | $122.14 | Oct 2, 2025 |
| Schreiner James Alan | EVP & COO | SELL | $100K–$500K | 838 | $124.00 | Sep 19, 2025 |
| Henry David Philip | EVP | SELL | $500K+ | 5K | $130.00 | Sep 19, 2025 |
| Mora Elizabeth | Director | SELL | $15K–$50K | 300 | $99.85 | Sep 3, 2025 |
| Schreiner James Alan | EVP & COO, MSD | SELL | $50K–$100K | 957 | $102.44 | Jul 8, 2025 |
| Henry David Philip | EVP | SELL | $100K–$500K | 2K | $105.00 | Jul 7, 2025 |
| Mora Elizabeth | Director | SELL | $15K–$50K | 300 | $81.78 | Jun 3, 2025 |
| Mora Elizabeth | Director | SELL | $15K–$50K | 275 | $113.41 | Dec 3, 2024 |
| Moloney Jacqueline F | Director | SELL | $15K–$50K | 250 | $108.90 | Oct 2, 2024 |
| Williams John Edward | EVP & GM, PSD | SELL | $100K–$500K | 2K | $118.71 | Aug 19, 2024 |
| Moloney Jacqueline F | Director | SELL | $15K–$50K | 250 | $123.46 | Aug 2, 2024 |
| Mora Elizabeth | Director | SELL | $15K–$50K | 275 | $129.41 | Jun 4, 2024 |
| Mora Elizabeth | Director | SELL | $15K–$50K | 250 | $133.00 | Apr 2, 2024 |
| Moloney Jacqueline F | Director | SELL | $15K–$50K | 250 | $122.89 | Mar 4, 2024 |
| Burke Kathleen Flaherty | EVP, GC & Secretary | SELL | $500K+ | 7K | $122.89 | Mar 4, 2024 |
| BAGSHAW SETH H | EVP, CFO & Treasurer | SELL | $1M+ | 33K | $123.28 | Feb 26, 2024 |
| Moloney Jacqueline F | Director | SELL | $100K–$500K | 2K | $124.10 | Feb 20, 2024 |
| COLELLA GERARD G | Director | SELL | $1M+ | 10K | $120.00 | Feb 12, 2024 |
| COLELLA GERARD G | Director | SELL | $1M+ | 10K | $110.00 | Jan 23, 2024 |
| Mora Elizabeth | Director | SELL | $15K–$50K | 250 | $100.90 | Jan 3, 2024 |
| Moloney Jacqueline F | Director | SELL | $15K–$50K | 250 | $82.23 | Dec 4, 2023 |
| Henry David Philip | EVP | BUY | $100K–$500K | 3K | $68.34 | Nov 8, 2023 |
| Mora Elizabeth | Director | SELL | $15K–$50K | 250 | $87.15 | Oct 3, 2023 |
| BAGSHAW SETH H | EVP, CFO & Treasurer | SELL | $1M+ | 25K | $97.30 | Sep 7, 2023 |
| COLELLA GERARD G | Director | SELL | $1M+ | 10K | $100.01 | Sep 1, 2023 |
| Moloney Jacqueline F | Director | SELL | $15K–$50K | 250 | $95.25 | Aug 29, 2023 |
| Burke Kathleen Flaherty | EVP, GC & Secretary | SELL | $1M+ | 12K | $101.23 | Aug 8, 2023 |
| Mora Elizabeth | Director | SELL | $15K–$50K | 250 | $108.49 | Jul 5, 2023 |
| Mora Elizabeth | Director | SELL | $15K–$50K | 200 | $97.16 | Jun 2, 2023 |
| Moloney Jacqueline F | Director | SELL | $15K–$50K | 225 | $97.16 | Jun 2, 2023 |
| Carlyle Partners VI Cayman Holdings, L.P. | 10% Owner | SELL | $1M+ | 2.0M | $86.13 | May 10, 2023 |
| Carlyle Group Inc. | 10% Owner | SELL | $1M+ | 2.0M | $86.13 | May 10, 2023 |
| Mora Elizabeth | Director | SELL | $15K–$50K | 200 | $86.67 | Mar 16, 2023 |
| Moloney Jacqueline F | Director | SELL | $15K–$50K | 225 | $86.67 | Mar 16, 2023 |
| Mora Elizabeth | Director | SELL | $15K–$50K | 200 | $83.86 | Dec 2, 2022 |
| Moloney Jacqueline F | Director | SELL | $15K–$50K | 225 | $83.86 | Dec 2, 2022 |
| Moloney Jacqueline F | Director | SELL | $15K–$50K | 225 | $84.14 | Oct 4, 2022 |
| Mora Elizabeth | Director | SELL | $15K–$50K | 200 | $96.72 | Sep 2, 2022 |
| CANNONE PETER III | Director | BUY | $15K–$50K | 250 | $120.06 | Aug 2, 2022 |
| COLELLA GERARD G | Director | BUY | $100K–$500K | 1K | $117.51 | Aug 2, 2022 |
| Mora Elizabeth | Director | SELL | $15K–$50K | 300 | $149.99 | Mar 2, 2022 |
Institutional Ownership
13F filings as of Dec 31, 2025 · 433 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| Capital International Investors | 3.2M | $1M+ | SH |
| VICTORY CAPITAL MANAGEMENT INC | 2.4M | $1M+ | SH |
| STATE STREET CORP | 2.0M | $1M+ | SH |
| Neuberger Berman Group LLC | 1.4M | $1M+ | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 1.0M | $1M+ | SH |
| DIMENSIONAL FUND ADVISORS LP | 974K | $1M+ | SH |
| COOKE & BIELER LP | 967K | $1M+ | SH |
| NORGES BANK | 923K | $1M+ | SH |
| Madison Asset Management, LLC | 921K | $1M+ | SH |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 871K | $1M+ | SH |
| WESTFIELD CAPITAL MANAGEMENT CO LP | 840K | $1M+ | SH |
| Point72 Asset Management, L.P. | 626K | $1M+ | SH |
| ROYCE & ASSOCIATES LP | 617K | $1M+ | SH |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | 606K | $1M+ | SH |
| Southpoint Capital Advisors LP | 600K | $1M+ | SH |
| Channing Capital Management, LLC | 531K | $1M+ | SH |
| NATIXIS ADVISORS, LLC | 522K | $1M+ | SH |
| BALYASNY ASSET MANAGEMENT L.P. | 512K | $1M+ | SH |
| AMERICAN CENTURY COMPANIES INC | 398K | $1M+ | SH |
| NOMURA HOLDINGS INC | 364K | $1M+ | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
SC 13G · Feb 12, 2026
6.5%
4.4M shares
SC 13G/A · Oct 31, 2025
11.5%
7.8M shares
SC 13G/A · Oct 17, 2025
8.8%
5.9M shares
T. Rowe Price Associates, Inc.
SC 13G/A · Aug 14, 2025
6.2%
4.1M shares
Victory Capital Management, Inc.
SC 13G/A · Aug 8, 2025
5.6%
3.8M shares
Victory Capital Management, Inc.
SC 13G · Aug 8, 2025
5.6%
3.8M shares
T. Rowe Price Associates, Inc.
SC 13G/A · Feb 14, 2025
5.0%
3.3M shares
Capital International Investors
SC 13G/A · Feb 8, 2025
4.7%
3.2M shares
T. ROWE PRICE ASSOCIATES, INC. 52-0556948
SC 13G/A · Nov 14, 2024
6.4%
4.3M shares
SC 13G/A · Nov 7, 2024
10.2%
6.9M shares
T. ROWE PRICE ASSOCIATES, INC. 52-0556948
SC 13G/A · Sep 10, 2024
7.0%
4.7M shares
The Vanguard Group - 23-1945930
SC 13G/A · Feb 13, 2024
10.3%
6.9M shares
SC 13G/A · Feb 12, 2024
0.0%
0 shares
Capital International Investors 95-1411037
SC 13G/A · Feb 9, 2024
5.5%
3.7M shares
SC 13G/A · Jan 24, 2024
9.2%
6.2M shares
T. ROWE PRICE ASSOCIATES, INC. 52-0556948
SC 13G · Jan 10, 2024
12.1%
8.1M shares
The Vanguard Group - 23-1945930
SC 13G/A · Jun 9, 2023
10.0%
6.7M shares
Capital International Investors 95-1411037
SC 13G/A · Feb 10, 2023
10.3%
6.8M shares
Capital International Investors 95-1411037
SC 13G/A · Feb 10, 2023
9.9%
6.6M shares
Victory Capital Management Inc. 13-2700161
SC 13G · Feb 2, 2023
5.8%
3.8M shares
SC 13G · Aug 29, 2022
12.8%
8.5M shares
Capital International Investors 95-1411037
SC 13G/A · Feb 11, 2022
8.8%
4.9M shares
SC 13G/A · Feb 1, 2022
9.1%
5.1M shares