Regenxbio Inc
Ownership
Ownership Structure
Who owns Regenxbio Inc (RGNX)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 86.7% of the shares are freely tradable; institutional investors hold 84.7%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 9.69 | 6,397,440 | +10.6 | 06/30/2026 |
| Redmile Group, LLC | 6.62 | 4,368,804 | +0.0 | 06/30/2026 |
| State Street Corp | 4.50 | 2,971,173 | +8.8 | 06/30/2026 |
| JPMorgan Chase & Co | 3.35 | 2,214,169 | -36.4 | 06/30/2026 |
| Vanguard Capital Management, LLC | 3.19 | 2,107,557 | +5.0 | 06/30/2026 |
| Morgan Stanley - Brokerage Accounts | 2.96 | 1,953,237 | -5.5 | 06/30/2026 |
| The Goldman Sachs Group Inc | 2.15 | 1,421,453 | -22.7 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| State Street® SPDR® S&P® Biotech ETF | 3.02 | 1,994,101 | -1.9 | 09/30/2026 |
| Vanguard MStar Total Stk Mkt Idx Invest | 2.67 | 1,765,239 | +0.0 | 09/30/2026 |
| iShares Russell 2000 ETF | 2.31 | 1,526,520 | -1.1 | 09/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Christmas Patrick J. | Chief Strategy & Legal Officer | 205,968 | 1,482,970 $ | Aug 1, 2026 | direct |
| Pakola Steve | Chief Medical Officer | 205,541 | 1,479,895 $ | Aug 1, 2026 | direct |
| Chan Mitchell | Chief Financial Officer | 122,815 | 884,268 $ | Sep 1, 2026 | direct |
| Ciongoli Gregory Austin | Director | 118,035 | 849,852 $ | Aug 27, 2026 | direct |
| Malzahn Craig | Chief Technology Officer | 81,960 | 590,112 $ | Sep 1, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 1, 2026 | Malzahn Craig | Chief Technology Officer | Other | 234 | 9.32 | 2,181 |
| Sep 1, 2026 | Chan Mitchell | Chief Financial Officer | Other | 4,902 | 9.32 | 45,687 |
| Aug 27, 2026 | Ciongoli Gregory Austin | Director | Buy | 53,407 | 9.36 | 499,676 |
| Aug 26, 2026 | Ciongoli Gregory Austin | Director | Buy | 49,196 | 9.14 | 449,706 |
| Aug 25, 2026 | Ciongoli Gregory Austin | Director | Other | 15,432 | 0.00 | – |
| Aug 1, 2026 | Pakola Steve | Chief Medical Officer | Other | 7,468 | 9.69 | 72,365 |
| Aug 1, 2026 | Christmas Patrick J. | Chief Strategy & Legal Officer | Other | 4,699 | 9.69 | 45,533 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: October 30, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.