REGENXBIO Inc.
US ˙ NasdaqGS ˙ US75901B1070

SecurityRGNX / REGENXBIO Inc.
InstitutionAmalgamated Bank
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Amalgamated Bank closes position in RGNX / REGENXBIO Inc.

On May 8, 2026 - Amalgamated Bank filed a 13F-HR form disclosing ownership of 0 shares of REGENXBIO Inc. (US:RGNX) valued at $0 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 1,470 shares of REGENXBIO Inc.. The current value of the position is $0 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)
2026-05-08 2026-03-31 13F REGENXBIO COM 75901B107 0 -100.00 0
2026-02-05 2025-12-31 13F REGENXBIO COM 75901B107 1,470 -119 -7.49 0 0.0002
2025-10-29 2025-09-30 13F REGENXBIO COM 75901B107 1,589 0 0.00 0 0.0001
2025-08-04 2025-06-30 13F REGENXBIO COM 75901B107 1,589 0 0.00 0 0.0001
2025-04-25 2025-03-31 13F REGENXBIO COM 75901B107 1,589 230 16.92 0 0.0001
2025-02-04 2024-12-31 13F REGENXBIO COM 75901B107 1,359 -11,897 -89.75 0 0.0001
2024-10-30 2024-09-30 13F REGENXBIO COM 75901B107 13,256 -357 -2.62 0 0.0011
2024-08-12 2024-06-30 13F REGENXBIO COM 75901B107 13,613 1,227 9.91 0 0.0014
2024-04-23 2024-03-31 13F REGENXBIO COM 75901B107 12,386 -2,198 -15.07 0 0.0022
2024-02-06 2023-12-31 13F REGENXBIO COM 75901B107 14,584 -1,975 -11.93 0 0.0021
2023-11-08 2023-09-30 13F REGENXBIO COM 75901B107 16,559 1,133 7.34 0 0.0023
2023-08-11 2023-06-30 13F REGENXBIO COM 75901B107 15,426 -537 -3.36 0 0.0025
2023-05-02 2023-03-31 13F REGENXBIO COM 75901B107 15,963 -1,340 -7.74 0 0.0026
2023-02-10 2022-12-31 13F REGENXBIO COM 75901B107 17,303 0 0.00 0 -100.00 0.0035
2022-11-09 2022-09-30 13F REGENXBIO COM 75901B107 17,303 7 0.04 457 7.03 0.0044
2022-08-15 2022-06-30 13F REGENXBIO COM 75901B107 17,296 -558 -3.13 427 -27.99 0.0040
2022-08-25 2022-03-31 13F/A-1 REGENXBIO COM 75901B107 17,854 -1,022 -5.41 593 -3.89 0.0046
2022-06-30 2022-03-31 13F REGENXBIO COM 75901B107 17,854 -1,022 593 0.0047
2022-02-15 2021-12-31 13F/A-1 REGENXBIO COM 75901B107 18,876 -263 -1.37 617 -23.07 0.0046
2022-02-15 2021-12-31 13F REGENXBIO COM 75901B107 18,876 -263 617 0.0046
2021-10-29 2021-09-30 13F REGENXBIO COM 75901B107 19,139 314 1.67 802 9.71 0.0068
2021-08-16 2021-06-30 13F REGENXBIO COM 75901B107 18,825 18,825 731 0.0059
2021-05-13 2021-03-31 13F REGENXBIO COM 75901B107 0 -5,585 -100.00 0 -100.00
2021-02-12 2020-12-31 13F REGENXBIO COM 75901B107 5,585 5,585 253 0.0096
2020-10-30 2020-09-30 13F REGENXBIO COM 75901B107 0 -5,727 -100.00 0 -100.00
2020-08-10 2020-06-30 13F REGENXBIO COM 75901B107 5,727 -492 -7.91 211 4.98 0.0098
2020-05-13 2020-03-31 13F REGENXBIO COM 75901B107 6,219 -217 -3.37 201 -23.86 0.0049
2020-02-13 2019-12-31 13F REGENXBIO COM 75901B107 6,436 254 4.11 264 20.00 0.0049
2019-11-13 2019-09-30 13F REGENXBIO COM 75901B107 6,182 -66 -1.06 220 -31.46 0.0046
2019-08-14 2019-06-30 13F REGENXBIO COM 75901B107 6,248 1,117 21.77 321 9.18 0.0075
2019-05-15 2019-03-31 13F REGENXBIO COM 75901B107 5,131 165 3.32 294 41.35 0.0071
2019-02-15 2018-12-31 13F REGENXBIO COM 75901B107 4,966 4,966 -3.22 208 -29.25 0.0059
2018-11-14 2018-09-30 13F REGENXBIO COM 75901B107 0 -4,622 -100.00 0 -100.00
2018-07-18 2018-06-30 13F REGENXBIO COM 75901B107 4,622 4,622 332 0.0081
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.