Repligen Corporation
US ˙ NasdaqGS ˙ US7599161095

SecurityRGEN / Repligen Corporation
InstitutionDimensional Fund Advisors Lp
Latest Disclosed Ownership854,741 shares
Latest Disclosed Value $ 100,681,052
Dimensional Fund Advisors Lp reports 6.26% increase in ownership of RGEN / Repligen Corporation

On May 7, 2026 - Dimensional Fund Advisors Lp filed a 13F-HR form disclosing ownership of 854,741 shares of Repligen Corporation (US:RGEN) valued at $100,705,585 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 804,410 shares of Repligen Corporation. This represents a change in shares of 6.26% during the quarter. The current value of the position is $104,047,622 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)
2026-05-07 2026-03-31 13F REPLIGEN COM 759916109 854,741 50,331 6.26 100,681 -23.62 0.0045
2026-02-12 2025-12-31 13F REPLIGEN COM 759916109 804,410 4,900 0.61 131,821 23.40 0.0277
2025-11-12 2025-09-30 13F REPLIGEN COM 759916109 799,510 31,505 4.10 106,826 11.83 0.0229
2025-08-12 2025-06-30 13F REPLIGEN COM 759916109 768,005 54,355 7.62 95,525 5.19 0.0221
2025-05-13 2025-03-31 13F REPLIGEN COM 759916109 713,650 133,165 22.94 90,815 8.69 0.0226
2025-02-13 2024-12-31 13F REPLIGEN COM 759916109 580,485 126,913 27.98 83,556 23.80 0.0201
2024-11-07 2024-09-30 13F REPLIGEN COM 759916109 453,572 24,048 5.60 67,493 24.64 0.0164
2024-08-09 2024-06-30 13F REPLIGEN COM 759916109 429,524 121,305 39.36 54,149 -4.48 0.0141
2024-05-10 2024-03-31 13F REPLIGEN COM 759916109 308,219 6,251 2.07 56,688 4.39 0.0153
2024-02-07 2023-12-31 13F REPLIGEN COM 759916109 301,968 16,430 5.75 54,306 19.60 0.0159
2023-11-09 2023-09-30 13F REPLIGEN COM 759916109 285,538 25,282 9.71 45,408 23.35 0.0149
2023-08-09 2023-06-30 13F REPLIGEN COM 759916109 260,256 19,633 8.16 36,813 -9.13 0.0117
2023-05-12 2023-03-31 13F REPLIGEN COM 759916109 240,623 6,766 2.89 40,513 103,776.92 0.0136
2023-02-09 2022-12-31 13F REPLIGEN COM 759916109 233,857 3,868 1.68 40 -99.91 0.0117
2022-11-10 2022-09-30 13F REPLIGEN COM 759916109 229,989 1,536 0.67 43,039 16.00 0.0165
2022-08-12 2022-06-30 13F REPLIGEN COM 759916109 228,453 -1,332 -0.58 37,101 -14.16 0.0133
2022-05-13 2022-03-31 13F REPLIGEN COM 759916109 229,785 11,121 5.09 43,221 -25.36 0.0133
2022-02-09 2021-12-31 13F REPLIGEN COM 759916109 218,664 -661 -0.30 57,908 -8.64 0.0175
2021-11-12 2021-09-30 13F REPLIGEN COM 759916109 219,325 -25,822 -10.53 63,382 29.51 0.0204
2021-08-12 2021-06-30 13F REPLIGEN COM 759916109 245,147 -5,264 -2.10 48,941 0.54 0.0155
2021-05-14 2021-03-31 13F REPLIGEN COM 759916109 250,411 -44,497 -15.09 48,677 -13.86 0.0161
2021-03-08 2020-12-31 13F/A-2 REPLIGEN COM 759916109 294,908 -235,971 -44.45 56,510 -27.86 0.0204
2021-02-11 2020-12-31 13F REPLIGEN COM 759916109 294,908 -235,971 56,510 20,408.4083
2020-11-12 2020-09-30 13F REPLIGEN COM 759916109 530,879 -72,981 -12.09 78,330 4.95 0.0332
2020-08-13 2020-06-30 13F REPLIGEN COM 759916109 603,860 -82,331 -12.00 74,636 12.67 0.0328
2020-05-14 2020-03-31 13F REPLIGEN COM 759916109 686,191 -89,001 -11.48 66,242 -7.62 0.0345
2020-02-14 2019-12-31 13F REPLIGEN COM 759916109 775,192 -36,592 -4.51 71,704 15.18 0.0261
2019-11-12 2019-09-30 13F REPLIGEN COM 759916109 811,784 17,652 2.22 62,256 -8.79 0.0242
2019-08-13 2019-06-30 13F REPLIGEN COM 759916109 794,132 -146,531 -15.58 68,253 22.81 0.0265
2019-08-12 2019-03-31 13F/A-2 REPLIGEN COM 759916109 940,663 -71,419 -7.06 55,574 4.12 0.0221
2019-05-10 2019-03-31 13F REPLIGEN COM 759916109 940,663 -71,419 55,574
2019-02-26 2018-12-31 13F/A-1 REPLIGEN COM 759916109 1,012,082 -61,805 -5.76 53,376 -10.38 0.0242
2019-02-13 2018-12-31 13F REPLIGEN COM 759916109 1,012,082 -61,805 53,376
2018-11-13 2018-09-30 13F REPLIGEN COM 759916109 1,073,887 57,067 5.61 59,556 24.51 0.0227
2018-08-10 2018-06-30 13F REPLIGEN COM 759916109 1,016,820 3,489 0.34 47,831 30.46 0.0191
2018-05-11 2018-03-31 13F REPLIGEN COM 759916109 1,013,331 98,864 10.81 36,662 10.50 0.0153
2018-02-12 2017-12-31 13F REPLIGEN COM 759916109 914,467 75,885 9.05 33,177 3.25 0.0138
2017-11-13 2017-09-30 13F REPLIGEN COM 759916109 838,582 -57,290 -6.39 32,134 -13.44 0.0140
2017-08-11 2017-06-30 13F REPLIGEN COM 759916109 895,872 -55,667 -5.85 37,125 10.84 0.0171
2017-05-12 2017-03-31 13F REPLIGEN COM 759916109 951,539 -23,935 -2.45 33,494 11.41 0.0160
2017-02-09 2016-12-31 13F REPLIGEN COM 759916109 975,474 -44,954 -4.41 30,065 -2.41 0.0150
2016-11-10 2016-09-30 13F REPLIGEN COM 759916109 1,020,428 -26,046 -2.49 30,806 7.60 0.0167
2016-08-09 2016-06-30 13F REPLIGEN COM 759916109 1,046,474 -61,521 -5.55 28,631 -3.65 0.0165
2016-05-13 2016-03-31 13F REPLIGEN COM 759916109 1,107,995 -29,849 -2.62 29,716 -7.69 0.0178
2016-02-10 2015-12-31 13F REPLIGEN COM 759916109 1,137,844 -94,834 -7.69 32,190 -6.23 0.0201
2015-11-13 2015-09-30 13F REPLIGEN COM 759916109 1,232,678 -582 -0.05 34,330 -32.55 0.0225
2015-08-14 2015-06-30 13F REPLIGEN COM 759916109 1,233,260 -85,902 -6.51 50,897 27.08 0.0312
2015-05-14 2015-03-31 13F REPLIGEN COM 759916109 1,319,162 -17,088 -1.28 40,050 51.38 0.0253
2015-02-06 2014-12-31 13F REPLIGEN COM 759916109 1,336,250 -3,013 -0.22 26,457 -0.78 0.0174
2014-11-13 2014-09-30 13F REPLIGEN COM 759916109 1,339,263 -2,318 -0.17 26,665 -12.79 0.0189
2014-08-08 2014-06-30 13F REPLIGEN COM 759916109 1,341,581 87,085 6.94 30,574 89.51 0.0213
2014-05-14 2014-03-31 13F REPLIGEN COM 759916109 1,254,496 41,359 3.41 16,133 -2.50 0.0121
2014-02-12 2013-12-31 13F REPLIGEN COM 759916109 1,213,137 10,628 0.88 16,546 24.07 0.0129
2013-11-13 2013-09-30 13F REPLIGEN COM 759916109 1,202,509 28,126 2.39 13,336 37.81 0.0115
2013-08-15 2013-06-30 13F REPLIGEN COM 759916109 1,174,383 1,174,383 9,677 0.0091
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.