Repligen Corporation
US ˙ NasdaqGS ˙ US7599161095

SecurityRGEN / Repligen Corporation
InstitutionStrs Ohio
Latest Disclosed Ownership54,760 shares
Latest Disclosed Value $ 6,451,823
Strs Ohio reports 8.95% increase in ownership of RGEN / Repligen Corporation

On April 24, 2026 - Strs Ohio filed a 13F-HR form disclosing ownership of 54,760 shares of Repligen Corporation (US:RGEN) valued at $6,451,823 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 50,262 shares of Repligen Corporation. This represents a change in shares of 8.95% during the quarter. The current value of the position is $6,665,935 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)
2026-04-24 2026-03-31 13F REPLIGEN COM_STK 759916109 54,760 4,498 8.95 6,452 -21.66 0.0256
2026-02-02 2025-12-31 13F REPLIGEN COM_STK 759916109 50,262 1,302 2.66 8,236 25.84 0.0307
2025-10-30 2025-09-30 13F REPLIGEN COM_STK 759916109 48,960 1 0.00 6,544 7.47 0.0240
2025-08-04 2025-06-30 13F REPLIGEN COM_STK 759916109 48,959 1,259 2.64 6,090 0.33 0.0227
2025-05-28 2025-03-31 13F REPLIGEN COM_STK 759916109 47,700 11,700 32.50 6,069 17.14 0.0254
2025-05-28 2024-12-31 13F REPLIGEN COM_STK 759916109 36,000 -6,000 -14.29 5,182 -17.10 0.0206
2024-11-01 2024-09-30 13F REPLIGEN COM_STK 759916109 42,000 -6,000 -12.50 6,250 3.31 0.0240
2024-08-05 2024-06-30 13F REPLIGEN COM_STK 759916109 48,000 -4,536 -8.63 6,051 67,122.22 0.0239
2024-05-13 2024-03-31 13F REPLIGEN COM_STK 759916109 52,536 16,236 44.73 10 50.00 0.0385
2024-01-30 2023-12-31 13F REPLIGEN COM 759916109 36,300 2,400 7.08 7 20.00 0.0272
2023-10-26 2023-09-30 13F/A-1 REPLIGEN COM 759916109 33,900 -6,900 -16.91 5 0.00 0.0240
2023-10-26 2023-09-30 13F REPLIGEN COM 759916109 33,900 5
2023-07-31 2023-06-30 13F REPLIGEN COM 759916109 40,800 -18,898 -31.66 6 -50.00 0.0244
2023-08-02 2023-03-31 13F/A-2 REPLIGEN COM 759916109 59,698 -22,202 -27.11 10 -23.08 0.0435
2023-08-02 2023-03-31 13F/A-1 REPLIGEN COM 759916109 59,698 10
2023-04-27 2023-03-31 13F REPLIGEN COM 759916109 59,698 -22,202 10 0.0519
2023-01-26 2022-12-31 13F REPLIGEN COM 759916109 81,900 -9,600 -10.49 14 -99.92 0.0626
2022-10-27 2022-09-30 13F REPLIGEN COM 759916109 91,500 6,400 7.52 17,120 23.88 0.0816
2022-07-25 2022-06-30 13F REPLIGEN COM 759916109 85,100 7,500 9.66 13,820 -5.31 0.0622
2022-04-21 2022-03-31 13F REPLIGEN COM 759916109 77,600 11,600 17.58 14,595 -16.50 0.0534
2022-01-24 2021-12-31 13F REPLIGEN COM 759916109 66,000 7,300 12.44 17,479 3.04 0.0607
2021-10-22 2021-09-30 13F REPLIGEN COM 759916109 58,700 -12,800 -17.90 16,963 18.86 0.0638
2021-07-26 2021-06-30 13F REPLIGEN COM 759916109 71,500 -7,520 -9.52 14,272 -7.10 0.0513
2021-04-23 2021-03-31 13F REPLIGEN COM 759916109 79,020 -686 -0.86 15,362 0.58 0.0578
2021-01-25 2020-12-31 13F REPLIGEN COM 759916109 79,706 -8,599 -9.74 15,274 17.24 0.0589
2020-12-14 2020-09-30 13F REPLIGEN COM 759916109 88,305 -23,701 -21.16 13,028 -5.90 0.0546
2020-07-23 2020-06-30 13F REPLIGEN COM 759916109 112,006 -14,694 -11.60 13,845 13.20 0.0605
2020-04-23 2020-03-31 13F REPLIGEN COM 759916109 126,700 107,200 549.74 12,231 578.37 0.0644
2020-01-24 2019-12-31 13F REPLIGEN COM 759916109 19,500 -400 -2.01 1,803 18.15 0.0076
2019-10-21 2019-09-30 13F/A-1 REPLIGEN COM 759916109 19,900 900 4.74 1,526 -6.55 0.0067
2019-10-21 2019-09-30 13F REPLIGEN COM 759916109 19,900 400 1,526 6,754.1606
2019-07-25 2019-06-30 13F REPLIGEN COM 759916109 19,000 -700 -3.55 1,633 40.41 0.0073
2019-04-19 2019-03-31 13F REPLIGEN COM 759916109 19,700 0 0.00 1,163 12.04 0.0053
2019-01-23 2018-12-31 13F REPLIGEN COM 759916109 19,700 19,700 1,038 0.0053
2017-01-24 2016-12-31 13F REPLIGEN COM 759916109 0 -27,900 -100.00 0 -100.00
2016-10-27 2016-09-30 13F REPLIGEN COM 759916109 27,900 -7,500 -21.19 842 -13.02 0.0038
2016-07-26 2016-06-30 13F REPLIGEN COM 759916109 35,400 3,100 9.60 968 11.78 0.0043
2016-04-25 2016-03-31 13F/A-1 REPLIGEN COM 759916109 32,300 2,800 9.49 866 3.84 0.0039
2016-01-28 2015-12-31 13F REPLIGEN COM 759916109 29,500 2,600 9.67 834 11.35 0.0037
2015-10-21 2015-09-30 13F REPLIGEN COM 759916109 26,900 1,400 5.49 749 -28.80 0.0036
2015-08-04 2015-06-30 13F REPLIGEN COM 759916109 25,500 -5,200 -16.94 1,052 12.88 0.0046
2015-04-27 2015-03-31 13F/A-1 REPLIGEN COM 759916109 30,700 -8,900 -22.47 932 18.88 0.0041
2015-04-21 2015-03-31 13F REPLIGEN COM 759916109 30,700 932
2015-01-23 2014-12-31 13F REPLIGEN COM 759916109 39,600 -600 -1.49 784 -2.00 0.0034
2014-10-29 2014-09-30 13F/A-1 REPLIGEN COM 759916109 40,200 1,700 4.42 800 -8.78 0.0035
2014-10-20 2014-09-30 13F REPLIGEN COM 759916109 40,200 800
2014-07-24 2014-06-30 13F REPLIGEN COM 759916109 38,500 -18,600 -32.57 877 19.48 0.0039
2014-04-28 2014-03-31 13F REPLIGEN COM 759916109 57,100 -3,700 -6.09 734 -11.46 0.0033
2014-01-30 2013-12-31 13F REPLIGEN COM 759916109 60,800 -16,200 -21.04 829 -2.93 0.0037
2013-10-24 2013-09-30 13F REPLIGEN COM 759916109 77,000 -18,800 -19.62 854 8.24 0.0038
2013-08-12 2013-06-30 13F REPLIGEN COM 759916109 95,800 95,800 789 0.0034
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.