Repligen Corporation
US ˙ NasdaqGS ˙ US7599161095

SecurityRGEN / Repligen Corporation
InstitutionNeuberger Berman Group LLC
Latest Disclosed Ownership27,366 shares
Latest Disclosed Value $ 3,224,261
Neuberger Berman Group LLC reports 35.44% decrease in ownership of RGEN / Repligen Corporation

On May 14, 2026 - Neuberger Berman Group LLC filed a 13F-HR form disclosing ownership of 27,366 shares of Repligen Corporation (US:RGEN) valued at $3,224,262 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 42,391 shares of Repligen Corporation. This represents a change in shares of -35.44% during the quarter. The current value of the position is $3,347,135 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-14 2026-03-31 13F REPLIGEN Common 759916109 27,366 -15,025 -35.44 3,224 -53.58 0.0013
2026-02-13 2025-12-31 13F REPLIGEN Common 759916109 42,391 38,342 946.95 6,946 1,183.92 0.0052
2025-11-12 2025-09-30 13F REPLIGEN Common 759916109 4,049 -162 -3.85 541 3.44 0.0004
2025-08-25 2025-06-30 13F/A-1 REPLIGEN Common 759916109 4,211 -1,235 -22.68 524 -24.42 0.0004
2025-08-13 2025-06-30 13F REPLIGEN Common 759916109 4,211 -1,235 524 0.0002
2025-05-13 2025-03-31 13F REPLIGEN Common 759916109 5,446 5,446 693 0.0006
2025-02-13 2024-12-31 13F REPLIGEN Common 759916109 0 -3,894 -100.00 0 -100.00
2024-11-14 2024-09-30 13F REPLIGEN Common 759916109 3,894 3,894 580 0.0005
2024-11-14 2024-06-30 13F/A-1 REPLIGEN Common 759916109 0 -3,445 -100.00 0 -100.00
2024-08-13 2024-06-30 13F REPLIGEN Common 759916109 0 -3,445 0
2024-11-14 2024-03-31 13F/A-1 REPLIGEN Common 759916109 3,445 -88,352 -96.25 634 -96.16 0.0005
2024-05-13 2024-03-31 13F REPLIGEN Common 759916109 3,445 -88,352 634 0.0003
2024-11-14 2023-12-31 13F/A-2 REPLIGEN Common 759916109 91,797 22,313 32.11 16,505 49.39 0.0144
2024-02-09 2023-12-31 13F REPLIGEN Common 759916109 91,797 22,313 16,505 0.0144
2023-11-14 2023-09-30 13F REPLIGEN Common 759916109 69,484 1,986 2.94 11,049 15.71 0.0101
2023-08-11 2023-06-30 13F REPLIGEN Common 759916109 67,498 65,687 3,627.11 9,548 3,040.79 0.0085
2023-05-12 2023-03-31 13F REPLIGEN Common 759916109 1,811 13 0.72 305 0.00 0.0003
2023-02-13 2022-12-31 13F REPLIGEN Common 759916109 1,798 -64 -3.44 304 -12.64 0.0003
2022-11-15 2022-09-30 13F REPLIGEN Common 759916109 1,862 215 13.05 348 30.34 0.0004
2022-08-15 2022-06-30 13F REPLIGEN Common 759916109 1,647 1,647 267 0.0003
2021-11-12 2021-09-30 13F REPLIGEN Common 759916109 0 -35,172 -100.00 0 -100.00
2021-08-13 2021-06-30 13F REPLIGEN Common 759916109 35,172 -4,149 -10.55 6,961 -8.35 0.0061
2021-05-13 2021-03-31 13F REPLIGEN Common 759916109 39,321 12,197 44.97 7,595 46.71 0.0073
2021-02-10 2020-12-31 13F REPLIGEN Common 759916109 27,124 3,996 17.28 5,177 52.44 0.0054
2020-11-12 2020-09-30 13F REPLIGEN Common 759916109 23,128 20 0.09 3,396 19.45 0.0040
2020-08-13 2020-06-30 13F REPLIGEN Common 759916109 23,108 -1,967 -7.84 2,843 17.43 0.0035
2020-05-14 2020-03-31 13F REPLIGEN Common 759916109 25,075 -20,325 -44.77 2,421 -42.36 0.0037
2020-02-12 2019-12-31 13F REPLIGEN Common 759916109 45,400 0 0.00 4,200 20.62 0.0049
2019-11-13 2019-09-30 13F REPLIGEN Common 759916109 45,400 4,600 11.27 3,482 -0.71 0.0043
2019-08-13 2019-06-30 13F REPLIGEN Common 759916109 40,800 15,800 63.20 3,507 137.44 0.0042
2019-05-13 2019-03-31 13F REPLIGEN Common 759916109 25,000 25,000 1,477 0.0018
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.