The largest holder of Entegris stock is BlackRock Advisors LLC, with 17.3 million shares (11.33% of the company), worth about $2.34 billion as of September 25, 2026. The 10 largest holders together own 53.5%.
In Q2 2026, 785 institutional holdings reports listed shares worth $29.80 billion.
Insiders reported 87 transactions in the last two years: 20 sales worth $37.70 million and no purchases. The newest one on file is from May 15, 2026 (Rice Susan G, Officer).
Major holders as of September 25, 2026; quarterly totals from institutional holdings reports (latest Q2 2026); insider transactions on file through May 15, 2026.

2026Q2
| Holder | Shares | % of company | Value |
|---|---|---|---|
| BlackRock Advisors LLC | 17.3 million | 11.33% | $2.3B |
| T. Rowe Price International Ltd. | 12.8 million | 8.38% | $1.7B |
| Capital Research & Management Co. (Global Investors) | 11.2 million | 7.33% | $1.5B |
| Vanguard Portfolio Management LLC | 7.8 million | 5.09% | $1.1B |
| Vanguard Capital Management LLC | 6.9 million | 4.51% | $932.0M |
| Principal Global Investors LLC | 6.0 million | 3.90% | $806.0M |
| Invesco Advisers, Inc. | 5.6 million | 3.68% | $761.0M |
| State Street Corporation | 5.5 million | 3.61% | $747.0M |
| JPMorgan Investment Management, Inc. | 5.5 million | 3.61% | $747.0M |
| PRIMECAP Management Co. | 3.1 million | 2.04% | $423.0M |
As of September 25, 2026.
| Quarter | Reports | Shares | Value |
|---|---|---|---|
| Q2 2026 | 785 | – | $29.8B |
| Q1 2026 | 679 | – | $19.3B |
| Q4 2025 | 623 | – | $14.4B |
| Q3 2025 | 610 | – | $16.1B |
| Q2 2025 | 617 | 173.0 million | $13.9B |
| Q1 2025 | 640 | 168.0 million | $14.7B |
| Q4 2024 | 626 | 157.0 million | $15.6B |
| Q3 2024 | 633 | 159.0 million | $17.9B |
Shares and value held by institutions that file quarterly holdings reports (options not included).
| Insider | Date | Title | Transaction | Value |
|---|---|---|---|---|
| Rice Susan G | May 15, 2026 | Officer | Conversion of Exercise of derivative security at price 55.72 per share. | $722,131 |
| Rice Susan G | May 15, 2026 | Officer | Sale at price 132.75 - 133.01 per share. | $2.6M |
| Colella Joseph | May 14, 2026 | General Counsel | Conversion of Exercise of derivative security at price 80.71 - 98.11 per share. | $578,710 |
| Blachier Olivier | May 14, 2026 | Officer | Conversion of Exercise of derivative security at price 80.71 per share. | $161,420 |
| Haris Clinton M | May 14, 2026 | Officer | Conversion of Exercise of derivative security at price 55.72 per share. | $324,848 |
| Blachier Olivier | May 14, 2026 | Officer | Sale at price 140.04 per share. | $280,080 |
| Colella Joseph | May 14, 2026 | General Counsel | Sale at price 140.04 - 140.25 per share. | $886,715 |
| Haris Clinton M | May 14, 2026 | Officer | Sale at price 144.57 per share. | $842,843 |
| Lederer James P | May 6, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Kanouff Yvette Marie | May 6, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Puma Mary G | May 6, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Gentilcore James F | May 6, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
Newest 12 of 87 insider transactions in the last two years.
BlackRock Advisors LLC, with 11.33% of the company (as of September 25, 2026). Next: T. Rowe Price International Ltd. (8.38%) and Capital Research & Management Co. (Global Investors) (7.33%).
785 institutional holdings reports listed Entegris shares in Q2 2026 worth $29.80 billion.
In the last two years insiders reported 20 sales and no purchases (87 transactions in all); the newest on file is from May 15, 2026.