How many institutions held RGNX - REGENXBIO Inc. - Common Stock, par value $0.0001 per share in Q3 2026?

27 institutional investors reported RGNX - REGENXBIO Inc. - Common Stock, par value $0.0001 per share for Q3 2026. Use the holders table for investor-level position and value details.

REGENXBIO Inc. - Common Stock, par value $0.0001 per share (RGNX)

Q: What does CUSIP 75901B107 represent in this 13F holders report?

CUSIP 75901B107 is the security identifier for RGNX - REGENXBIO Inc. - Common Stock, par value $0.0001 per share used to aggregate holder disclosures.

CUSIP: 75901B107

Q3 2026 13F Holders as of 30 Sep 2026

Security type / class: Equity / Common Stock, par value $0.0001 per share
Total 13F shares: 491,302
Total 13F value: $3,725,385
Share change: -27,513
SEC-reported price per share: $7.53
Number of holders: 27
Value change: -$263,062
Number of buys: 19
Number of sells: 5
Shares outstanding: 67,187,075

Security key

75901B107

Report period

Q3 2026

Institutions

Top holders

RGNX full security history Ownership snapshot Full 13F holder table REGENXBIO Inc. SEC filings REGENXBIO Inc. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 75901B107

Recent filing periods:

Q3 2026

Ownership snapshot

Top reported holders of RGNX - REGENXBIO Inc. - Common Stock, par value $0.0001 per share (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

Redmile Group, LLC

Disclosed value leader

BlackRock, Inc.

Comparable rows

5/15

Latest evidence

30 Sep 2026

13F 13D/G 3/4/5 Lead comparable stake: 9.9% 10 rows are not safely comparable across share classes. 13D/G row: Redmile Group, LLC Showing 1-6 of 15 holder rows.

Quick read

Redmile Group, LLC leads the comparable SEC ownership view at 9.9%.

5 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens Redmile Group, LLC's linked filing trail.

Comparable ownership Top 5

Redmile Group, LLC 9.9%

BlackRock, Inc. 7.3%

STATE STREET CORP 5.3%

JPMORGAN CHASE & CO 5.3%

BlackRock Portfolio Management LLC 4.1%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
Redmile Group, LLC	13F 13D/G Company 13F 13D/G	9.9% Reported 13D/G · 30 Jun 2025	$52,338,272 4,368,804 shares	—	30 Jun 2026
BlackRock, Inc.	13F 13D/G Company 13F 13D/G	7.3% Reported 13D/G · 31 Mar 2025	$76,641,333 6,397,440 shares	—	30 Jun 2026
STATE STREET CORP	13F 13D/G Company · STATE STREET CORPORATION 13F 13D/G	5.3% Reported 13D/G · 31 Mar 2026	$35,594,653 2,971,173 shares	—	30 Jun 2026
JPMORGAN CHASE & CO	13D/G 13F Company 13D/G 13F	5.3% Reported 13D/G · 30 Sep 2026	$26,813,690 3,560,915 shares	+$9,650,094	30 Sep 2026
BlackRock Portfolio Management LLC	13D/G 13D/G	4.1% Reported 13D/G · 31 Dec 2025	$30,032,914 2,085,619 shares	-$15,091,042	31 Dec 2025
VANGUARD CAPITAL MANAGEMENT LLC	13F Company 13F	— denominator unverified	$25,248,533 2,107,557 shares	—	30 Jun 2026

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q3 2026

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

491,302

Rows available

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q3 2026 vs Q2 2026 Across Filers

Q2 2026 holders

164

Q3 2026 holders

Holder diff

-137

Investor	Q2 2026 Shares	Q3 2026 Shares	Share Diff	Share Chg %	Q2 2026 value	Q3 2026 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend