Repligen Corporation
US ˙ NasdaqGS ˙ US7599161095

SecurityRGEN / Repligen Corporation
InstitutionRanger Investment Management, L.P.
Latest Disclosed Ownership161,135 shares
Latest Disclosed Value $ 18,984,926
Ranger Investment Management, L.P. reports 0.81% decrease in ownership of RGEN / Repligen Corporation

On May 15, 2026 - Ranger Investment Management, L.P. filed a 13F-HR form disclosing ownership of 161,135 shares of Repligen Corporation (US:RGEN) valued at $18,984,926 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 162,450 shares of Repligen Corporation. This represents a change in shares of -0.81% during the quarter. The current value of the position is $19,614,964 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)
2026-05-15 2026-03-31 13F Repligen COM 759916109 161,135 -1,315 -0.81 18,985 -28.68 1.3736
2026-02-13 2025-12-31 13F Repligen COM 759916109 162,450 -515 -0.32 26,619 22.20 1.8258
2025-11-05 2025-09-30 13F Repligen COM 759916109 162,965 -4,955 -2.95 21,784 4.30 1.5187
2025-08-19 2025-06-30 13F Repligen COM 759916109 167,920 -54,795 -24.60 20,886 -26.30 1.4586
2025-05-15 2025-03-31 13F Repligen COM 759916109 222,715 -3,352 -1.48 28,338 -12.91 2.0252
2025-02-13 2024-12-31 13F Repligen COM 759916109 226,067 -4,324 -1.88 32,540 -5.09 2.0545
2024-11-04 2024-09-30 13F Repligen COM 759916109 230,391 9,025 4.08 34,287 22.87 2.2001
2024-08-14 2024-06-30 13F Repligen COM 759916109 221,366 51,790 30.54 27,905 -10.53 1.8986
2024-05-15 2024-03-31 13F Repligen COM 759916109 169,576 -4,241 -2.44 31,188 -0.20 2.0056
2024-02-14 2023-12-31 13F Repligen COM 759916109 173,817 733 0.42 31,252 13.55 1.8948
2023-11-14 2023-09-30 13F Repligen COM 759916109 173,084 -6,298 -3.51 27,522 8.46 1.8274
2023-08-14 2023-06-30 13F Repligen COM 759916109 179,382 -28,656 -13.77 25,375 -27.55 1.5273
2023-05-05 2023-03-31 13F Repligen COM 759916109 208,038 13,497 6.94 35,025 6.34 2.3472
2023-02-14 2022-12-31 13F Repligen COM 759916109 194,541 5,597 2.96 32,938 -6.83 2.4450
2022-11-14 2022-09-30 13F Repligen COM 759916109 188,944 -36,303 -16.12 35,353 -3.35 2.7756
2022-08-15 2022-06-30 13F Repligen COM 759916109 225,247 45,370 25.22 36,580 8.12 2.7685
2022-05-13 2022-03-31 13F Repligen COM 759916109 179,877 4,698 2.68 33,833 -27.07 2.1387
2022-02-11 2021-12-31 13F Repligen COM 759916109 175,179 -12,544 -6.68 46,394 -14.48 2.5338
2021-11-15 2021-09-30 13F Repligen COM 759916109 187,723 -112,668 -37.51 54,250 -9.53 2.8946
2021-08-16 2021-06-30 13F Repligen COM 759916109 300,391 -7,008 -2.28 59,964 0.34 3.1305
2021-05-17 2021-03-31 13F Repligen COM 759916109 307,399 -32,372 -9.53 59,761 -8.22 3.2891
2021-02-12 2020-12-31 13F Repligen COM 759916109 339,771 -26,113 -7.14 65,110 20.61 3.4327
2020-11-16 2020-09-30 13F Repligen COM 759916109 365,884 -48,277 -11.66 53,983 5.45 3.4341
2020-08-14 2020-06-30 13F Repligen COM 759916109 414,161 -56,548 -12.01 51,194 12.66 3.5067
2020-05-15 2020-03-31 13F Repligen COM 759916109 470,709 -50,622 -9.71 45,442 -5.77 3.9976
2020-02-14 2019-12-31 13F Repligen COM 759916109 521,331 87,300 20.11 48,223 44.87 3.1799
2019-11-14 2019-09-30 13F Repligen COM 759916109 434,031 -90,520 -17.26 33,286 -26.17 2.3864
2019-08-14 2019-06-30 13F Repligen COM 759916109 524,551 -5,505 -1.04 45,085 43.97 3.0733
2019-05-15 2019-03-31 13F Repligen COM 759916109 530,056 -87,605 -14.18 31,316 -3.86 2.2645
2019-02-14 2018-12-31 13F Repligen COM 759916109 617,661 -9,650 -1.54 32,575 -6.37 2.6569
2018-11-14 2018-09-30 13F Repligen COM 759916109 627,311 -221,678 -26.11 34,791 -12.88 2.2962
2018-08-14 2018-06-30 13F Repligen COM 759916109 848,989 157,567 22.79 39,936 59.64 2.7922
2018-05-15 2018-03-31 13F Repligen COM 759916109 691,422 -9,190 -1.31 25,016 -1.58 1.8472
2018-02-13 2017-12-31 13F Repligen COM 759916109 700,612 -33,620 -4.58 25,418 -9.66 1.8681
2017-11-14 2017-09-30 13F Repligen COM 759916109 734,232 -185,134 -20.14 28,136 -26.15 2.1103
2017-08-14 2017-06-30 13F Repligen COM 759916109 919,366 -17,640 -1.88 38,099 15.51 2.7163
2017-05-15 2017-03-31 13F Repligen COM 759916109 937,006 -13,875 -1.46 32,983 12.55 2.3930
2017-02-15 2016-12-31 13F Repligen COM 759916109 950,881 182,871 23.81 29,306 26.40 2.0802
2016-11-14 2016-09-30 13F Repligen COM 759916109 768,010 33,900 4.62 23,186 15.44 1.6624
2016-08-12 2016-06-30 13F Repligen COM 759916109 734,110 -32,350 -4.22 20,085 -2.29 1.2388
2016-05-16 2016-03-31 13F Repligen COM 759916109 766,460 264,175 52.59 20,556 44.66 1.2597
2016-02-16 2015-12-31 13F Repligen COM 759916109 502,285 502,285 14,210 0.8378
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.