REGENXBIO Inc.
US ˙ NasdaqGS ˙ US75901B1070

SecurityRGNX / REGENXBIO Inc.
InstitutionCwm, Llc
Latest Disclosed Ownership72,115 shares
Latest Disclosed Value $ 604,324
Cwm, Llc reports 2.36% decrease in ownership of RGNX / REGENXBIO Inc.

On May 14, 2026 - Cwm, Llc filed a 13F-HR form disclosing ownership of 72,115 shares of REGENXBIO Inc. (US:RGNX) valued at $604,324 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 73,858 shares of REGENXBIO Inc.. This represents a change in shares of -2.36% during the quarter. The current value of the position is $482,449 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)
2026-05-14 2026-03-31 13F REGENXBIO COM 75901B107 72,115 -1,743 -2.36 604 60,300.00 0.0016
2026-01-26 2025-12-31 13F REGENXBIO COM 75901B107 73,858 5,823 8.56 1 0.0029
2025-10-15 2025-09-30 13F REGENXBIO COM 75901B107 68,035 21,219 45.32 1 0.0020
2025-07-25 2025-06-30 13F REGENXBIO COM 75901B107 46,816 20,120 75.37 0 0.0014
2025-05-01 2025-03-31 13F REGENXBIO COM 75901B107 26,696 26,271 6,181.41 0 0.0008
2025-02-04 2024-12-31 13F REGENXBIO COM 75901B107 425 -332 -43.86 0 0.0000
2024-10-08 2024-09-30 13F REGENXBIO COM 75901B107 757 -98 -11.46 0 0.0000
2024-07-10 2024-06-30 13F REGENXBIO COM 75901B107 855 324 61.02 0 0.0000
2024-04-05 2024-03-31 13F REGENXBIO COM 75901B107 531 515 3,218.75 0 0.0001
2024-02-01 2023-12-31 13F REGENXBIO COM 75901B107 16 16 0 0.0000
2023-10-11 2023-09-30 13F REGENXBIO COM 75901B107 0 -43 -100.00 0 0.0000
2023-08-03 2023-06-30 13F REGENXBIO COM 75901B107 43 37 616.67 0 0.0000
2023-05-01 2023-03-31 13F REGENXBIO COM 75901B107 6 -169 -96.57 0 0.0000
2023-02-01 2022-12-31 13F REGENXBIO COM 75901B107 175 41 30.60 0 -100.00 0.0000
2022-10-27 2022-09-30 13F REGENXBIO COM 75901B107 134 134 4 0.0000
2022-04-21 2022-03-31 13F REGENXBIO COM 75901B107 0 -158 -100.00 0 -100.00
2022-01-31 2021-12-31 13F REGENXBIO COM 75901B107 158 158 5 0.0000
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.