Entegris, Inc.
MX ˙ BMV ˙ US29362U1043
SecurityMX:ENTG / Entegris, Inc.
InstitutionRBF Capital, LLC
Latest Disclosed Ownership110,000 shares
Latest Disclosed Value $ 12,896,400
RBF Capital, LLC reports 1.55% decrease in ownership of ENTG / Entegris, Inc.

On May 18, 2026 - RBF Capital, LLC filed a 13F-HR/A form disclosing ownership of 110,000 shares of Entegris, Inc. (MX:ENTG) valued at $12,896,400 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on February 17, 2026 disclosing 111,735 shares of Entegris, Inc.. This represents a change in shares of -1.55% during the quarter.

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)
2026-05-18 2026-03-31 13F/A-1 ENTEGRIS COM 29362U104 110,000 -1,735 -1.55 12,896 37.00 0.6305
2026-05-14 2026-03-31 13F ENTEGRIS COM 29362U104 110,000 -1,735 12,896 0.6746
2026-02-17 2025-12-31 13F/A-1 ENTEGRIS COM 29362U104 111,735 0 0.00 9,414 -8.89 0.4178
2026-02-17 2025-12-31 13F ENTEGRIS COM 29362U104 111,735 0 9,414 0.4178
2025-11-14 2025-09-30 13F ENTEGRIS COM 29362U104 111,735 0 0.00 10,331 14.65 0.4607
2025-08-14 2025-06-30 13F ENTEGRIS COM 29362U104 111,735 0 0.00 9,011 -7.81 0.4286
2025-05-15 2025-03-31 13F ENTEGRIS COM 29362U104 111,735 0 0.00 9,775 -12.19 0.5869
2025-02-14 2024-12-31 13F ENTEGRIS COM 29362U104 111,735 0 0.00 11,132 -11.75 0.5760
2024-11-14 2024-09-30 13F ENTEGRIS COM 29362U104 111,735 0 0.00 12,613 -16.62 0.6322
2024-08-14 2024-06-30 13F ENTEGRIS COM 29362U104 111,735 0 0.00 15,129 -3.66 0.8695
2024-05-15 2024-03-31 13F ENTEGRIS COM 29362U104 111,735 0 0.00 15,703 17.29 0.8774
2024-02-14 2023-12-31 13F ENTEGRIS COM 29362U104 111,735 0 0.00 13,388 27.59 0.8096
2023-11-14 2023-09-30 13F ENTEGRIS COM 29362U104 111,735 -2,802 -2.45 10,493 -17.29 0.6894
2023-08-14 2023-06-30 13F ENTEGRIS COM 29362U104 114,537 0 0.00 12,688 35.08 0.7908
2023-05-16 2023-03-31 13F ENTEGRIS COM 29362U104 114,537 -2,200 -1.88 9,392 22.68 0.6822
2023-02-14 2022-12-31 13F ENTEGRIS COM 29362U104 116,737 0 0.00 7,656 -21.01 0.5753
2022-11-14 2022-09-30 13F ENTEGRIS COM 29362U104 116,737 2,838 2.49 9,692 -34.50 0.8166
2022-08-15 2022-06-30 13F ENTEGRIS COM 29362U104 113,899 -800 -0.70 14,798 -1.71 1.0293
2022-05-16 2022-03-31 13F ENTEGRIS COM 29362U104 114,699 0 0.00 15,055 -5.28 0.9626
2022-02-14 2021-12-31 13F ENTEGRIS COM 29362U104 114,699 -3,292 -2.79 15,895 7.00 0.9785
2021-11-15 2021-09-30 13F ENTEGRIS COM 29362U104 117,991 0 0.00 14,855 2.38 0.8287
2021-08-16 2021-06-30 13F ENTEGRIS COM 29362U104 117,991 0 0.00 14,509 9.99 0.8110
2021-05-17 2021-03-31 13F ENTEGRIS COM 29362U104 117,991 0 0.00 13,191 16.33 0.8227
2021-03-02 2020-12-31 13F/A-1 ENTEGRIS COM 29362U104 117,991 0 0.00 11,339 29.28 0.8673
2021-02-11 2020-12-31 13F ENTEGRIS COM 29362U104 117,991 0 11,339 983,583.8050
2020-11-16 2020-09-30 13F/A-1 ENTEGRIS COM 29362U104 117,991 0 0.00 8,771 25.88 0.8844
2020-11-16 2020-09-30 13F ENTEGRIS COM 29362U104 1,134,180 8,325
2020-08-14 2020-06-30 13F ENTEGRIS COM 29362U104 117,991 7,991 7.26 6,968 41.48 0.7514
2020-05-18 2020-03-31 13F ENTEGRIS COM 29362U104 110,000 -9,091 -7.63 4,925 -17.55 0.6445
2020-02-13 2019-12-31 13F ENTEGRIS COM 29362U104 119,091 0 0.00 5,973 6.57 0.5707
2019-11-13 2019-09-30 13F ENTEGRIS COM 29362U104 119,091 0 0.00 5,605 26.13 0.6282
2019-08-13 2019-06-30 13F ENTEGRIS COM 29362U104 119,091 -10,000 -7.75 4,444 -3.54 0.4471
2019-05-15 2019-03-31 13F ENTEGRIS COM 29362U104 129,091 19,091 17.36 4,607 50.16 0.5409
2019-02-14 2018-12-31 13F ENTEGRIS COM 29362U104 110,000 0 0.00 3,068 -3.67 0.4005
2018-11-14 2018-09-30 13F ENTEGRIS COM 29362U104 110,000 0 0.00 3,185 -14.59 0.3454
2018-08-14 2018-06-30 13F ENTEGRIS COM 29362U104 110,000 0 0.00 3,729 -2.59 0.4383
2018-05-15 2018-03-31 13F ENTEGRIS COM 29362U104 110,000 0 0.00 3,828 14.27 0.4563
2018-02-14 2017-12-31 13F ENTEGRIS COM 29362U104 110,000 0 0.00 3,350 5.55 0.3696
2017-11-14 2017-09-30 13F ENTEGRIS COM 29362U104 110,000 0 0.00 3,174 31.43 0.4015
2017-08-14 2017-06-30 13F ENTEGRIS COM 29362U104 110,000 76,478 228.14 2,415 208.04 0.3167
2017-05-15 2017-03-31 13F ENTEGRIS COM 29362U104 33,522 0 0.00 784 30.67 0.1074
2017-02-14 2016-12-31 13F ENTEGRIS COM 29362U104 33,522 23,522 235.22 600 244.83 0.0855
2016-11-14 2016-09-30 13F ENTEGRIS COM 29362U104 10,000 0 0.00 174 20.00 0.0298
2016-08-15 2016-06-30 13F ENTEGRIS COM 29362U104 10,000 0 0.00 145 6.62 0.0288
2016-05-16 2016-03-31 13F ENTEGRIS, INC. CMN Common Stock 29362U104 10,000 0 0.00 136 2.26 0.0260
2016-02-16 2015-12-31 13F ENTEGRIS, INC. CMN Common Stock 29362U104 10,000 0 0.00 133 0.76 0.0250
2015-11-16 2015-09-30 13F ENTEGRIS, INC. CMN Common Stock 29362U104 10,000 0 0.00 132 -9.59 0.0275
2015-08-14 2015-06-30 13F ENTEGRIS, INC. CMN Common Stock 29362U104 10,000 0 0.00 146 6.57 0.0276
2015-05-14 2015-03-31 13F ENTEGRIS, INC. CMN Common Stock 29362U104 10,000 0 0.00 137 3.79 0.0278
2015-02-13 2014-12-31 13F ENTEGRIS, INC. CMN Common Stock 29362U104 10,000 0 0.00 132 14.78 0.0273
2014-11-14 2014-09-30 13F ENTEGRIS, INC. CMN Common Stock 29362U104 10,000 0 0.00 115 -16.06 0.0264
2014-08-14 2014-06-30 13F ENTEGRIS, INC. CMN Common Stock 29362U104 10,000 0 0.00 137 13.22 0.0329
2014-05-13 2014-03-31 13F ENTEGRIS, INC. CMN Common Stock 29362U104 10,000 0 0.00 121 4.31 0.0295
2014-02-14 2013-12-31 13F ENTEGRIS, INC. CMN Common Stock 29362U104 10,000 0 0.00 116 13.73 0.0274
2013-11-14 2013-09-30 13F ENTEGRIS, INC. CMN Common Stock 29362U104 10,000 0 0.00 102 8.51 0.0271
2013-08-14 2013-06-30 13F ENTEGRIS, INC. CMN Common Stock 29362U104 10,000 10,000 94 0.0267
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.