REGENXBIO
Develops one-time AAV gene therapies while licensing its NAV vector platform.
$9.65
After-hours close−0.02 (−0.21%)
At close$9.67(+3.20%)
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Breakdown13F · Form 4
Institutions 82.39%42.59M sharesInsiders 3.93%2.03M sharesOther 13.68%7.07M shares
Shares outstanding 51.70M · Float 44.45M · 86.0% free float
Institutions13F, as of Jun 30, 2026
176 holders · 42.59M shares · 27 new positions · 90 increased · 51 reduced · 38 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 6.40M | 12.37% | +614.6K | Aug 7, 2026 |
| Redmile Group, LLC | 4.37M | 8.45% | 0 | Aug 14, 2026 |
| State Street Corp | 2.97M | 5.75% | +239.7K | Aug 7, 2026 |
| JPMorgan Chase & Co | 2.21M | 4.28% | −1.27M | Aug 12, 2026 |
| Vanguard Capital Management LLC | 2.11M | 4.08% | +100.4K | Aug 13, 2026 |
| Morgan Stanley | 1.95M | 3.78% | −112.9K | Aug 13, 2026 |
| Goldman Sachs Group Inc | 1.42M | 2.75% | −418.0K | Aug 14, 2026 |
| AQR Capital Management LLC | 1.38M | 2.67% | +326.6K | Aug 14, 2026 |
Beneficial owners13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| Redmile Group, LLC | 9.90% | 5.06M | 13G | Aug 14, 2025 ↗ |
| BlackRock, Inc. | 7.30% | 3.68M | 13G | Apr 24, 2025 ↗ |
| State Street Corporation | 5.30% | 2.73M | 13G | May 12, 2026 ↗ |
InsidersForm 4
| Insider | Role | Shares | % outstanding | Filed |
|---|---|---|---|---|
| Kenneth T. Mills | director | 495.9K | 0.96% | Jun 2, 2026 |
| Curran Simpson | director, officer: Chief Executive Officer | 338.1K | 0.65% | Jul 6, 2026 |
| Olivier Danos | officer: Chief Scientific Officer | 226.3K | 0.44% | Apr 4, 2025 |
| Patrick J. Christmas | officer: Chief Strategy & Legal Officer | 206.0K | 0.40% | Aug 4, 2026 |
| Steve Pakola | officer: Chief Medical Officer | 205.5K | 0.40% | Aug 4, 2026 |
| Mitchell Chan | officer: Chief Financial Officer | 127.7K | 0.25% | Jan 8, 2026 |
| Gregory Austin Ciongoli | director | 118.0K | 0.23% | Aug 27, 2026 |
| Craig Malzahn | officer: Chief Technology Officer | 82.2K | 0.16% | Jan 8, 2026 |
| Jennifer Zachary | director | 31.9K | 0.06% | Jun 2, 2026 |
| Jean Bennett | director | 28.9K | 0.06% | Jun 2, 2026 |
2 ten-percent owners hold 528.4K shares by Form 4, outside the officers-and-directors figure above · 2 people have not refiled in the last 18 months (360.6K shares), so they are not in the figure above
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Aug 27, 2026 | Gregory Austin Ciongolidirector | Purchase | 53,407 | $9.36 | 118,035 |
| Aug 26, 2026 | Gregory Austin Ciongolidirector | Purchase | 49,196 | $9.14 | 64,628 |
| Jul 2, 2026 | Steve Pakolaofficer: Chief Medical Officer | Sale | 2,161 | $13.64 | 213,009 |
| Jul 1, 2026 | Steve Pakolaofficer: Chief Medical Officer | Sale | 36,725 | $12.86 | 213,009 |
| Jun 29, 2026 | Steve Pakolaofficer: Chief Medical Officer | Sale | 19,608 | $11.04 | 213,009 |
| May 11, 2026 | Steve Pakolaofficer: Chief Medical Officer | Sale | 15,309 | $11.02 | 232,617 |
| Mar 10, 2026 | Steve Pakolaofficer: Chief Medical Officer | Sale | 5,124 | $10.35 | 247,926 |
| Oct 9, 2025 | Curran Simpsondirector, officer: Chief Executive Officer | Sale | 20,811 | $12.62 | 216,162 |
| Sep 29, 2025 | Curran Simpsondirector, officer: Chief Executive Officer | Sale | 7,624 | $10.03 | 236,973 |
| Sep 10, 2025 | Curran Simpsondirector, officer: Chief Executive Officer | Sale | 7,734 | $10.02 | 244,597 |
CongressHouse and Senate disclosures
Not reported.