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REGENXBIO Inc

For the period ended Dec 31, 2024. Filed Mar 13, 2025.

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A company's yearly report to the SEC, with audited financial statements. It is the fullest account a company gives of its business, its finances and the risks it sees.

FY2024 · Filed Mar 13, 2025

RGNX$8.07+5.9%Stored close · as of Nov 9, 2026

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Item 9B. Other Information

Rule 10b5-1 Trading Plans

The adoption or termination of contracts, instructions or written plans for the purchase or sale of our securities by our Section 16 officers and directors for the three months ended December 31, 2024, each of which is intended to satisfy the affirmative defense of Rule 10b5-1(c) (Rule 10b5-1 Plan), were as follows:

Rule 10b5-1 Trading Plan · Aggregate # of
Provides for · Securities to be
NameTitleActionDate AdoptedExpiration DatePurchase/SalePurchased/Sold (b)
David C. StumpDirectorAdoption11/21/20246/1/2026Sale37,500
Stephen Pakola, M.D.Executive Vice President, Chief Medical OfficerAdoption12/20/202412/31/2025Sale260,368
Entities affiliated with Allan M. Fox (a)DirectorAdoption12/21/20243/31/2027Sale1,441,231
Patrick J. ChristmasExecutive Vice President, Chief Legal OfficerAdoption12/26/20241/4/2027Sale235,400

(a)

Entities affiliated with Allan M. Fox, a director of the Company, include AMF Family Gift Trust LLC, AMF Gift Trust LLC, HBF Gift Trust LLC and Quaker Gray LLC (collectively, the Fox LLCs). Mr. Fox maintains voting and investment control over the shares held by the Fox LLCs in his capacity as manager of the Fox LLCs.

(b)

The aggregate number of shares in this column includes shares that may be forfeited or withheld to satisfy exercise price and tax withholding obligations at the time of vesting.

Other than as described above, during the three months ended December 31, 2024, none of ourdirectors or Section 16 reporting officers adopted orterminated any Rule 10b5-1 trading arrangement or non-Rule 10b5-1 trading arrangement (as such terms are defined in Item 408 of the SEC's Regulation S-K).

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The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.