Entegris, Inc.
US ˙ NasdaqGS ˙ US29362U1043

SecurityENTG / Entegris, Inc.
InstitutionSei Investments Co
Latest Disclosed Ownership332,659 shares
Latest Disclosed Value $ 28,026,560
Sei Investments Co reports 16.15% decrease in ownership of ENTG / Entegris, Inc.

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 332,659 shares of Entegris, Inc. (US:ENTG) valued at $28,026,521 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 396,738 shares of Entegris, Inc.. This represents a change in shares of -16.15% during the quarter. The current value of the position is $46,682,037 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-02-13 2025-12-31 13F ENTEGRIS COM 29362U104 332,659 -64,079 -16.15 28,027 -23.60 0.0277
2025-11-13 2025-09-30 13F ENTEGRIS COM 29362U104 396,738 -26,200 -6.19 36,682 7.54 0.0394
2025-08-14 2025-06-30 13F ENTEGRIS COM 29362U104 422,938 -29,431 -6.51 34,110 -13.80 0.0395
2025-05-14 2025-03-31 13F/A-1 ENTEGRIS COM 29362U104 452,369 -63,102 -12.24 39,571 -22.50 0.0509
2025-05-13 2025-03-31 13F ENTEGRIS COM 29362U104 521,464 5,993 51,016 0.0555
2025-02-11 2024-12-31 13F ENTEGRIS COM 29362U104 515,471 -4,200 -0.81 51,063 -12.68 0.0656
2024-11-12 2024-09-30 13F ENTEGRIS COM 29362U104 519,671 -42,189 -7.51 58,480 -23.13 0.0759
2024-08-13 2024-06-30 13F ENTEGRIS COM 29362U104 561,860 11,930 2.17 76,076 -1.57 0.1078
2024-05-07 2024-03-31 13F ENTEGRIS COM 29362U104 549,930 2,391 0.44 77,286 17.80 0.1132
2024-02-14 2023-12-31 13F ENTEGRIS COM 29362U104 547,539 172,736 46.09 65,609 86.40 0.1053
2023-11-14 2023-09-30 13F ENTEGRIS COM 29362U104 374,803 -17,688 -4.51 35,198 -19.08 0.0632
2023-08-11 2023-06-30 13F ENTEGRIS COM 29362U104 392,491 6,241 1.62 43,494 37.31 0.0759
2023-05-12 2023-03-31 13F ENTEGRIS COM 29362U104 386,250 168,234 77.17 31,676 121.51 0.0588
2023-02-10 2022-12-31 13F ENTEGRIS COM 29362U104 218,016 -108,311 -33.19 14,300 -47.22 0.0318
2022-11-14 2022-09-30 13F ENTEGRIS COM 29362U104 326,327 116,302 55.38 27,093 40.12 0.0604
2022-08-15 2022-06-30 13F ENTEGRIS COM 29362U104 210,025 1,202 0.58 19,335 -29.34 0.0418
2022-05-13 2022-03-31 13F ENTEGRIS COM 29362U104 208,823 4,421 2.16 27,363 -3.42 0.0550
2022-02-14 2021-12-31 13F ENTEGRIS COM 29362U104 204,402 4,245 2.12 28,333 12.01 0.0532
2021-11-12 2021-09-30 13F ENTEGRIS COM 29362U104 200,157 47,594 31.20 25,296 35.28 0.0531
2021-08-06 2021-06-30 13F ENTEGRIS COM 29362U104 152,563 48,933 47.22 18,699 64.87 0.0415
2021-05-12 2021-03-31 13F ENTEGRIS COM 29362U104 103,630 -17,641 -14.55 11,342 -2.79 0.0286
2021-02-08 2020-12-31 13F ENTEGRIS COM 29362U104 121,271 -39,755 -24.69 11,667 -2.73 0.0302
2020-12-04 2020-09-30 13F/A-1 ENTEGRIS COM 29362U104 161,026 -39,869 -19.85 11,994 1.02 0.0347
2020-11-06 2020-09-30 13F ENTEGRIS COM 29362U104 166,395 -34,500 12,393 29,839.5886
2020-08-17 2020-06-30 13F/A-1 ENTEGRIS COM 29362U104 200,895 -58,934 -22.68 11,873 1.92 0.0368
2020-08-11 2020-06-30 13F ENTEGRIS COM 29362U104 255,746 -4,083 13,015 35,303.8803
2020-05-14 2020-03-31 13F ENTEGRIS COM 29362U104 259,829 13,420 5.45 11,649 -5.67 0.0428
2020-02-06 2019-12-31 13F ENTEGRIS COM 29362U104 246,409 10,057 4.26 12,349 11.01 0.0368
2019-11-12 2019-09-30 13F ENTEGRIS COM 29362U104 236,352 18,798 8.64 11,124 37.08 0.0285
2019-08-14 2019-06-30 13F ENTEGRIS COM 29362U104 217,554 24,529 12.71 8,115 17.90 0.0265
2019-05-15 2019-03-31 13F ENTEGRIS COM 29362U104 193,025 79,832 70.53 6,883 110.68 0.0231
2019-02-13 2018-12-31 13F ENTEGRIS COM 29362U104 113,193 1,351 1.21 3,267 0.90 0.0116
2018-11-08 2018-09-30 13F ENTEGRIS COM 29362U104 111,842 -8,156 -6.80 3,238 -20.42 0.0117
2018-08-03 2018-06-30 13F ENTEGRIS COM 29362U104 119,998 5,754 5.04 4,069 2.34 0.0138
2018-05-11 2018-03-31 13F ENTEGRIS COM 29362U104 114,244 -36,224 -24.07 3,976 -13.23 0.0152
2018-02-08 2017-12-31 13F ENTEGRIS COM 29362U104 150,468 4,497 3.08 4,582 8.78 0.0159
2017-11-06 2017-09-30 13F ENTEGRIS COM 29362U104 145,971 2,512 1.75 4,212 33.76 0.0150
2017-07-31 2017-06-30 13F ENTEGRIS COM 29362U104 143,459 85,859 149.06 3,149 133.61 0.0126
2017-05-05 2017-03-31 13F ENTEGRIS COM 29362U104 57,600 0 0.00 1,348 30.75 0.0059
2017-02-02 2016-12-31 13F ENTEGRIS COM 29362U104 57,600 0 0.00 1,031 2.79 0.0050
2016-11-04 2016-09-30 13F ENTEGRIS COM 29362U104 57,600 57,600 0.00 1,003 0.0051
2016-05-10 2016-03-31 13F/A-1 ENTEGRIS COM 29362U104 0 -137 -100.00 0 -100.00
2016-02-03 2015-12-31 13F ENTEGRIS COM 29362U104 137 137 0.00 2 0.0000
2015-05-01 2015-03-31 13F ENTEGRIS COM 29362U104 0 -138 -100.00 0 -100.00
2015-02-10 2014-12-31 13F ENTEGRIS COM 29362U104 138 138 2 0.0000
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.