Regenxbio Inc. insider trading

Every open-market purchase and sale by Regenxbio Inc.'s officers, directors and largest shareholders since November 4, 2021, and what the share price did next.

Insider purchases, 5 years $949,541 2 trades by 1 insider Insider sales, 5 years $1.3M 7 trades by 2 insiders 3 months later: median −36.0% (−40.4% vs S&P 500)

Insider purchase Insider sale Marker size reflects trade value. Weekly closes adjusted for splits; may be delayed.

Regenxbio Inc. insider open-market trades
Date	Insider	Trade	Shares	Price	Value	1M after	3M after	6M after

From insiders' Form 4 filings with the SEC: open-market purchases and sales only (awards, option exercises and shares withheld for tax are excluded), combined to one line per insider per day. "Plan" marks trades the filing says were made under a pre-set Rule 10b5-1 trading plan, which are scheduled in advance. Price changes run from the close on the trade date; hover a figure for the change relative to the S&P 500. Past moves don't predict future ones.

Does following Regenxbio Inc.’s insiders pay?

From April 15, 2016 to August 27, 2026, 4 insiders reported 1 open-market purchase and 18 sales not made under a pre-set plan in Regenxbio Inc. After sales, the shares moved +46.3% against the index over 12 months (a negative figure means selling was the right call). Buying each purchase the day after it was reported, an equal amount each, held 12 months or until that insider reported a sale, would have turned $10,000 on August 28, 2026 into $7,340 by November 2, 2026, −82.3% a year. It held shares 100% of the time; the S&P 500 on those same days, with Treasury bills otherwise, made $9,857 (−7.7% a year), and held throughout $9,857 (−7.7%).

Copying Regenxbio Inc.'s insidersS&P 500, same days investedS&P 500, held throughout $10,000 copying every open-market purchase by Regenxbio Inc.'s insiders from August 28, 2026, before costs and taxes, marked weekly. Uninvested money earns the Treasury bill rate; the portfolio held shares 100% of the time.

Regenxbio Inc.: each insider's record
Insider	Role	Purchases	12 months after their purchases	Beat the S&P 500	Sales	12 months after their sales	Latest report
Fmr LLC	Other	0	—	—	14	+58.2% (14)	May 18, 2016
Fox Allan M.	Director	0	—	—	2	−23.3% (2)	December 27, 2021
Simpson Curran	SVP, Product Development & CTO	0	—	—	2	+32.5% (2)	December 11, 2019
Ciongoli Gregory Austin	Director	1	—	—	0	—	August 27, 2026

Moves are the shares’ return including dividends minus the S&P 500’s, from the close on the first trading day after each report; the number of trades with a finished 12-month window is in brackets. Green means the trade went the insider’s way (a purchase ahead of the index, a sale followed by the shares trailing it). A trade reported both by a director or officer and by a fund or company they are linked to counts once here, under the person. Purchases count only where the share price actually traded was at least $5. These figures describe what the shares did, not why anyone traded. Insiders across all companies.

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