REGENXBIO Inc.
REGENXBIO Inc. is a Private limited company (Ltd.) registered in United States under 1226564, and its current status with Maryland Department of Assessments and Taxation is active. The company was incorporated on 24 July 2020 and lists its registered address as Rockville, United States. 3 shareholders are on record for REGENXBIO Inc., and since every one of them is a company rather than an individual, this particular filing does not on its own establish an ultimate beneficial owner (UBO) — identifying one would mean tracing the ownership of each shareholding company in turn. This profile is sourced directly from Maryland Department of Assessments and Taxation and was last updated on 4 October 2026.
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Shareholders
3
Three shareholders are currently on record for REGENXBIO Inc., reflecting the stock ledger maintained under state corporate law (e.g. §219 of the Delaware General Corporation Law) rather than a public filing.
The largest of these is Vanguard Group Inc, holding 8.5% — the largest recorded stake — followed by Fidelity Salem Street Trust-Fidelity Small Cap Index Fund at 1.2%; the remaining 1 shareholder shown holds smaller stakes.
Because every shareholder shown is a company rather than an individual, the ownership chain continues above this level, and no beneficial owner can be established from this filing alone.
| Shareholder | Type | Holding | Source Document |
|---|---|---|---|
| Vanguard Group Inc | 8.5% | Maryland Department of Assessments and Taxation | |
| Fidelity Salem Street Trust-Fidelity Small Cap Index Fund | 1.2% | Maryland Department of Assessments and Taxation | |
| BlackRock Funds-BlackRock Advantage Small Cap Core Fund | 1.1% | Maryland Department of Assessments and Taxation |
Officers
5
The Executive Vp Of Product Development & Cto of REGENXBIO Inc. currently on record is Craig Malzahn; five officers are currently on record for REGENXBIO Inc., filed with Maryland Department of Assessments and Taxation.
The register reports 12 officers in total, including past appointments, though only the 5 most relevant records are shown here.
Management authority at REGENXBIO Inc. sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control.
The source filing doesn't specify representation authority — whether officers can act individually or must sign jointly to bind the company — so that detail isn't available here.
Group Structure
REGENXBIO Inc. has no recorded parent company — it sits at the top of its own group structure, with 1 subsidiary recorded beneath it across 2 jurisdictions. Each of these downward relationships is derived rather than filed: resolved by matching entities across the registry network, not stated directly in a single document.
Those 1 subsidiary spans United States, Ireland jurisdictions, though this list should not be read as complete — subsidiaries only become visible here where shareholder data has actually been filed with a register, so holdings in jurisdictions without that filing simply won't appear.
REGENXBIO Inc.
United States
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Frequently Asked Questions
Who owns REGENXBIO Inc.?
Three shareholders are currently on record for REGENXBIO Inc., reflecting the stock ledger maintained under state corporate law (e.g. §219 of the Delaware General Corporation Law) rather than a public filing. The largest of these is Vanguard Group Inc, holding 8.5% — the largest recorded stake — followed by Fidelity Salem Street Trust-Fidelity Small Cap Index Fund at 1.2%; the remaining 1 shareholder shown holds smaller stakes. Because every shareholder shown is a company rather than an individual, the ownership chain continues above this level, and no beneficial owner can be established from this filing alone.
Who is REGENXBIO Inc.'s UBO (Ultimate Beneficial Owner)?
Every shareholder recorded for REGENXBIO Inc. is itself a company rather than a natural person, so no Ultimate Beneficial Owner (UBO) is identified at this level; establishing one would require tracing the ownership of each shareholding company in turn.
How many shareholders does REGENXBIO Inc. have on record?
3 shareholders are shown on record for REGENXBIO Inc..
What is REGENXBIO Inc.'s company registration number?
REGENXBIO Inc.'s registration number is 1226564, filed with Maryland Department of Assessments and Taxation in United States. Its current status on the register is active.
Is REGENXBIO Inc. still an active company?
REGENXBIO Inc.'s status on Maryland Department of Assessments and Taxation is listed as active.
When was REGENXBIO Inc. incorporated?
REGENXBIO Inc. was incorporated on 24 July 2020, according to Maryland Department of Assessments and Taxation.
What is REGENXBIO Inc.'s registered address?
The registered address on file for REGENXBIO Inc. is Rockville, United States.
What legal structure is REGENXBIO Inc. registered as?
REGENXBIO Inc. is registered as a Private limited company (Ltd.) in United States.
Who are the officers/directors of REGENXBIO Inc.?
The Executive Vp Of Product Development & Cto of REGENXBIO Inc. currently on record is Craig Malzahn; five officers are currently on record for REGENXBIO Inc., filed with Maryland Department of Assessments and Taxation. Management authority at REGENXBIO Inc. sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control.
Does REGENXBIO Inc. have a parent company or subsidiaries?
REGENXBIO Inc. has no recorded parent company — it sits at the top of its own group structure, with 1 subsidiary recorded beneath it across 2 jurisdictions. Those 1 subsidiary spans United States, Ireland jurisdictions, though this list should not be read as complete — subsidiaries only become visible here where shareholder data has actually been filed with a register, so holdings in jurisdictions without that filing simply won't appear.
Can Zavia monitor changes to REGENXBIO Inc.'s ownership over time?
This profile reflects a point-in-time snapshot from Maryland Department of Assessments and Taxation. Zavia's monitoring API can track changes to REGENXBIO Inc.'s registered shareholders, officers, and group structure going forward, flagging updates as they're filed rather than requiring a manual recheck.
Can I access REGENXBIO Inc.'s data through an API?
Yes. Zavia's API connects directly to official government ownership registries across 195 countries and territories, including United States, so records like REGENXBIO Inc.'s registration, shareholder, UBO, and group-structure data can be queried programmatically instead of viewed one page at a time.
Where does this company information come from, and how current is it?
This record is sourced directly from Maryland Department of Assessments and Taxation and was last synced on 4 October 2026.