Pegasystems Inc.
US ˙ NasdaqGS ˙ US7055731035

SecurityPEGA / Pegasystems Inc.
InstitutionSei Investments Co
Latest Disclosed Ownership688,309 shares
Latest Disclosed Value $ 41,105,971
Sei Investments Co reports 50.76% increase in ownership of PEGA / Pegasystems Inc.

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 688,309 shares of Pegasystems Inc. (US:PEGA) valued at $41,105,813 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 456,550 shares of Pegasystems Inc.. This represents a change in shares of 50.76% during the quarter. The current value of the position is $24,166,529 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 PEGASYSTEMS COM 705573103 688,309 231,759 50.76 41,106 56.58 0.0406
2025-11-13 2025-09-30 13F PEGASYSTEMS COM 705573103 456,550 -5,939 -1.28 26,252 4.87 0.0282
2025-08-14 2025-06-30 13F PEGASYSTEMS COM 705573103 462,489 294,727 175.68 25,034 114.63 0.0290
2025-05-14 2025-03-31 13F/A-1 PEGASYSTEMS COM 705573103 167,762 8,588 5.40 11,664 -21.38 0.0150
2025-05-13 2025-03-31 13F PEGASYSTEMS COM 705573103 145,077 -14,097 13,261 0.0144
2025-02-11 2024-12-31 13F PEGASYSTEMS COM 705573103 159,174 -48,716 -23.43 14,835 -2.36 0.0191
2024-11-12 2024-09-30 13F PEGASYSTEMS COM 705573103 207,890 122,229 142.69 15,195 193.09 0.0197
2024-08-13 2024-06-30 13F PEGASYSTEMS COM 705573103 85,661 -25,273 -22.78 5,185 -27.70 0.0073
2024-05-07 2024-03-31 13F PEGASYSTEMS COM 705573103 110,934 -20,292 -15.46 7,171 11.84 0.0105
2024-02-14 2023-12-31 13F PEGASYSTEMS COM 705573103 131,226 8,475 6.90 6,412 20.33 0.0103
2023-11-14 2023-09-30 13F PEGASYSTEMS COM 705573103 122,751 44,864 57.60 5,329 38.79 0.0096
2023-08-11 2023-06-30 13F PEGASYSTEMS COM 705573103 77,887 3,099 4.14 3,840 5.90 0.0067
2023-05-12 2023-03-31 13F PEGASYSTEMS COM 705573103 74,788 30,858 70.24 3,626 141.02 0.0067
2023-02-10 2022-12-31 13F PEGASYSTEMS COM 705573103 43,930 -16,336 -27.11 1,504 -22.35 0.0033
2022-11-14 2022-09-30 13F PEGASYSTEMS COM 705573103 60,266 -5,660 -8.59 1,937 -38.59 0.0043
2022-08-15 2022-06-30 13F PEGASYSTEMS COM 705573103 65,926 33,967 106.28 3,154 22.39 0.0068
2022-05-13 2022-03-31 13F PEGASYSTEMS COM 705573103 31,959 1,360 4.44 2,577 -24.67 0.0052
2022-02-14 2021-12-31 13F PEGASYSTEMS COM 705573103 30,599 276 0.91 3,421 -11.19 0.0064
2021-11-12 2021-09-30 13F PEGASYSTEMS COM 705573103 30,323 -2,576 -7.83 3,852 -16.01 0.0081
2021-08-06 2021-06-30 13F PEGASYSTEMS COM 705573103 32,899 1,773 5.70 4,586 28.86 0.0102
2021-05-12 2021-03-31 13F PEGASYSTEMS COM 705573103 31,126 1,444 4.86 3,559 -10.01 0.0090
2021-02-08 2020-12-31 13F PEGASYSTEMS COM 705573103 29,682 -6,613 -18.22 3,955 -9.97 0.0102
2020-12-04 2020-09-30 13F/A-1 PEGASYSTEMS COM 705573103 36,295 -4,305 -10.60 4,393 6.96 0.0127
2020-11-06 2020-09-30 13F PEGASYSTEMS COM 705573103 36,333 -4,267 4,398 10,589.4062
2020-08-17 2020-06-30 13F/A-1 PEGASYSTEMS COM 705573103 40,600 -4,468 -9.91 4,107 27.94 0.0127
2020-08-11 2020-06-30 13F PEGASYSTEMS COM 705573103 47,022 1,954 3,833 10,397.2165
2020-05-14 2020-03-31 13F PEGASYSTEMS COM 705573103 45,068 2,121 4.94 3,210 -6.17 0.0118
2020-02-06 2019-12-31 13F PEGASYSTEMS COM 705573103 42,947 1,750 4.25 3,421 22.05 0.0102
2019-11-12 2019-09-30 13F PEGASYSTEMS COM 705573103 41,197 6,091 17.35 2,803 12.12 0.0072
2019-08-14 2019-06-30 13F PEGASYSTEMS COM 705573103 35,106 33,858 2,712.98 2,500 2,986.42 0.0082
2019-05-15 2019-03-31 13F PEGASYSTEMS COM 705573103 1,248 0 0.00 81 3.85 0.0003
2019-02-13 2018-12-31 13F PEGASYSTEMS COM 705573103 1,248 0 0.00 78 0.00 0.0003
2018-11-08 2018-09-30 13F PEGASYSTEMS COM 705573103 1,248 1,214 3,570.59 78 3,800.00 0.0003
2018-08-03 2018-06-30 13F PEGASYSTEMS COM 705573103 34 -3,353 -99.00 2 -99.03 0.0000
2018-05-11 2018-03-31 13F PEGASYSTEMS COM 705573103 3,387 476 16.35 206 50.36 0.0008
2018-02-08 2017-12-31 13F PEGASYSTEMS COM 705573103 2,911 -3,153 -52.00 137 -60.74 0.0005
2017-11-06 2017-09-30 13F PEGASYSTEMS COM 705573103 6,064 3,967 189.18 349 186.07 0.0012
2017-07-31 2017-06-30 13F PEGASYSTEMS COM 705573103 2,097 2,055 4,892.86 122 6,000.00 0.0005
2017-05-05 2017-03-31 13F PEGASYSTEMS COM 705573103 42 -30,661 -99.86 2 -99.82 0.0000
2017-02-02 2016-12-31 13F PEGASYSTEMS COM 705573103 30,703 6,451 26.60 1,106 54.69 0.0054
2016-11-04 2016-09-30 13F PEGASYSTEMS COM 705573103 24,252 5,665 30.48 715 42.71 0.0036
2016-08-11 2016-06-30 13F PEGASYSTEMS COM 705573103 18,587 0 0.00 501 6.14 0.0030
2016-05-10 2016-03-31 13F/A-1 PEGASYSTEMS COM 705573103 18,587 596 3.31 472 -4.65 0.0029
2016-02-03 2015-12-31 13F PEGASYSTEMS COM 705573103 17,991 10,718 147.37 495 176.54 0.0030
2015-11-02 2015-09-30 13F/A-1 PEGASYSTEMS COM 705573103 7,273 7,273 179 0.0016
2015-10-30 2015-09-30 13F PEGASYSTEMS COM 705573103 7,273 179
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.