RGNX

REGENXBIO Inc.

Insider trading activity for REGENXBIO Inc., straight from SEC Form 4 filings. Net figures below count open-market buys and sales only — grants, option exercises and tax withholding are excluded because they are compensation, not decisions to trade.

Past 3 months

+$231.1K

net buying

Bought(2 · 1 insiders): $949.4K
Sold(3 · 1 insiders): $718.2K

Past 6 months

+$62.4K

net buying

Bought(2 · 1 insiders): $949.4K
Sold(4 · 1 insiders): $886.9K

Past 12 months

-$329.7K

net selling

Bought(2 · 1 insiders): $949.4K
Sold(7 · 2 insiders): $1.3M

Transaction history

The 85 most recent Form 4 transactions.

Open in screener →

Insider transactions, newest first: date, security, transaction type, size and a link to the filing each row came from.
Date	Insider	Role	Type	Shares	Price	Value	Δ Own	Filing
Sep 1	Chan Mitchell	Chief Financial Officer	FTAX	4,902	$9.32	$45.7K	-3.8%	Open the original filing on SEC.gov
Sep 1	Malzahn Craig	Chief Technology Officer	FTAX	234	$9.32	$2.2K	-0.3%	Open the original filing on SEC.gov
Aug 27	Ciongoli Gregory Austin	Director	PBUY	53,407	$9.36	$499.7K	+82.6%	Open the original filing on SEC.gov
Aug 26	Ciongoli Gregory Austin	Director	PBUY★	49,196	$9.14	$449.7K	+318.8%	Open the original filing on SEC.gov
Aug 25	Ciongoli Gregory Austin	Director	AGRANT◆	69,609	—	—	—	Open the original filing on SEC.gov
Aug 25	Ciongoli Gregory Austin	Director	AGRANT	15,432	—	—	—	Open the original filing on SEC.gov
Aug 1	Pakola Steve	Chief Medical Officer	FTAX	7,468	$9.69	$72.4K	-3.5%	Open the original filing on SEC.gov
Aug 1	Christmas Patrick J.	Chief Strategy & Legal…	FTAX	4,699	$9.69	$45.5K	-2.2%	Open the original filing on SEC.gov
Jul 2	Pakola Steve	Chief Medical Officer	MEXER◷◆	2,161	—	—	—	Open the original filing on SEC.gov
Jul 2	Pakola Steve	Chief Medical Officer	SSELL◷	2,161	$13.64	$29.5K	-1.0%	Open the original filing on SEC.gov
Jul 2	Pakola Steve	Chief Medical Officer	MEXER◷	2,161	$7.86	$17K	+1.0%	Open the original filing on SEC.gov
Jul 1	Pakola Steve	Chief Medical Officer	MEXER◷?◆	36,725	—	—	—	Open the original filing on SEC.gov
Jul 1	Pakola Steve	Chief Medical Officer	SSELL◷?	36,725	$12.86	$472.3K	-14.7%	Open the original filing on SEC.gov
Jul 1	Pakola Steve	Chief Medical Officer	MEXER◷?	36,725	$7.86	$288.7K	+17.2%	Open the original filing on SEC.gov
Jul 1	Simpson Curran	Chief Executive Officer	FTAX	6,818	$13.09	$89.2K	-2.0%	Open the original filing on SEC.gov
Jun 30	Simpson Curran	Chief Executive Officer	AGRANT	1,453	$10.18	$14.8K	+0.4%	Open the original filing on SEC.gov
Jun 29	Pakola Steve	Chief Medical Officer	SSELL◷?	19,608	$11.04	$216.5K	-8.4%	Open the original filing on SEC.gov
May 29	Zachary Jennifer	Director	AGRANT◆	46,600	—	—	—	Open the original filing on SEC.gov
May 29	Zachary Jennifer	Director	AGRANT	9,807	—	—	+44.5%	Open the original filing on SEC.gov
May 29	Tasse Daniel	Director	AGRANT◆	46,600	—	—	—	Open the original filing on SEC.gov
May 29	Tasse Daniel	Director	AGRANT	9,807	—	—	+51.5%	Open the original filing on SEC.gov
May 29	Stump David C	Director	AGRANT◆	46,600	—	—	—	Open the original filing on SEC.gov
May 29	Stump David C	Director	AGRANT	9,807	—	—	+51.5%	Open the original filing on SEC.gov
May 29	Mills Kenneth T.	Director	AGRANT◆	46,600	—	—	—	Open the original filing on SEC.gov
May 29	Mills Kenneth T.	Director	AGRANT	9,807	—	—	+2.0%	Open the original filing on SEC.gov
May 29	Migausky George V	Director	AGRANT◆	46,600	—	—	—	Open the original filing on SEC.gov
May 29	Migausky George V	Director	AGRANT	9,807	—	—	+51.5%	Open the original filing on SEC.gov
May 29	Karabelas Argeris N	Director	AGRANT◆	46,600	—	—	—	Open the original filing on SEC.gov
May 29	Karabelas Argeris N	Director	AGRANT	9,807	—	—	+51.5%	Open the original filing on SEC.gov
May 29	Glucksmann Alexandra	Director	AGRANT◆	46,600	—	—	—	Open the original filing on SEC.gov
May 29	Glucksmann Alexandra	Director	AGRANT	9,807	—	—	+51.5%	Open the original filing on SEC.gov
May 29	Fox Allan M.	Director	AGRANT◆	46,600	—	—	—	Open the original filing on SEC.gov
May 29	Fox Allan M.	Director	AGRANT	9,807	—	—	+51.5%	Open the original filing on SEC.gov
May 29	Bennett Jean	Director	AGRANT◆	46,600	—	—	—	Open the original filing on SEC.gov
May 29	Bennett Jean	Director	AGRANT	9,807	—	—	+51.5%	Open the original filing on SEC.gov
May 11	Pakola Steve	Chief Medical Officer	SSELL◷	15,309	$11.02	$168.7K	-6.2%	Open the original filing on SEC.gov
Mar 10	Pakola Steve	Chief Medical Officer	SSELL◷	5,124	$10.35	$53K	-2.0%	Open the original filing on SEC.gov
Feb 1	Pakola Steve	Chief Medical Officer	FTAX	5,267	$11.16	$58.8K	-2.0%	Open the original filing on SEC.gov
Feb 1	Christmas Patrick J.	Chief Strategy & Legal…	FTAX	4,700	$11.16	$52.5K	-2.2%	Open the original filing on SEC.gov
Jan 27	Mills Kenneth T.	Director	MEXER◆	225,000	—	—	—	Open the original filing on SEC.gov
Jan 27	Mills Kenneth T.	Director	FTAX	221,753	$13.41	$3M	-31.3%	Open the original filing on SEC.gov
Jan 27	Mills Kenneth T.	Director	MEXER	225,000	$13.09	$2.9M	+46.6%	Open the original filing on SEC.gov
Jan 6	Simpson Curran	Chief Executive Officer	AGRANT◆	233,651	—	—	—	Open the original filing on SEC.gov
Jan 6	Simpson Curran	Chief Executive Officer	AGRANT	144,864	—	—	+73.3%	Open the original filing on SEC.gov
Jan 6	Pakola Steve	Chief Medical Officer	AGRANT◆	35,402	—	—	—	Open the original filing on SEC.gov
Jan 6	Pakola Steve	Chief Medical Officer	AGRANT	65,847	—	—	+34.2%	Open the original filing on SEC.gov
Jan 6	Malzahn Craig	Chief Technology Officer	AGRANT◆	35,402	—	—	—	Open the original filing on SEC.gov
Jan 6	Malzahn Craig	Chief Technology Officer	AGRANT	65,847	—	—	+402.8%	Open the original filing on SEC.gov
Jan 6	Christmas Patrick J.	Chief Strategy & Legal…	AGRANT◆	39,650	—	—	—	Open the original filing on SEC.gov
Jan 6	Christmas Patrick J.	Chief Strategy & Legal…	AGRANT	73,749	—	—	+52.1%	Open the original filing on SEC.gov
Jan 6	Chan Mitchell	Chief Financial Officer	AGRANT◆	39,650	—	—	—	Open the original filing on SEC.gov
Jan 6	Chan Mitchell	Chief Financial Officer	AGRANT	73,749	—	—	+136.7%	Open the original filing on SEC.gov
Jan 2	Simpson Curran	Chief Executive Officer	FTAX	18,559	$14.40	$267.2K	-8.6%	Open the original filing on SEC.gov
Jan 2	Pakola Steve	Chief Medical Officer	FTAX	18,247	$14.40	$262.8K	-8.7%	Open the original filing on SEC.gov
Jan 2	Malzahn Craig	Chief Technology Officer	FTAX	1,238	$14.40	$17.8K	-7.0%	Open the original filing on SEC.gov
Jan 2	Christmas Patrick J.	Chief Strategy & Legal…	FTAX	9,793	$14.40	$141K	-6.5%	Open the original filing on SEC.gov
Dec 31, 2025	Simpson Curran	Chief Executive Officer	AGRANT	951	$7.00	$6.7K	+0.3%	Open the original filing on SEC.gov
Oct 9, 2025	Simpson Curran	Chief Executive Officer	SSELL◷	20,811	$12.62	$262.6K	-8.8%	Open the original filing on SEC.gov
Sep 29, 2025	Simpson Curran	Chief Executive Officer	SSELL◷	7,624	$10.03	$76.5K	-3.1%	Open the original filing on SEC.gov
Sep 10, 2025	Simpson Curran	Chief Executive Officer	SSELL◷	7,734	$10.02	$77.5K	-3.1%	Open the original filing on SEC.gov
Sep 1, 2025	Malzahn Craig	Chief Technology Officer	FTAX	234	$8.93	$2.1K	-1.3%	Open the original filing on SEC.gov
Sep 1, 2025	Chan Mitchell	Chief Financial Officer	FTAX	4,901	$8.93	$43.8K	-8.3%	Open the original filing on SEC.gov
Aug 1, 2025	Christmas Patrick J.	Chief Strategy & Legal…	FTAX	4,699	$8.19	$38.5K	-3.0%	Open the original filing on SEC.gov
Jul 1, 2025	Simpson Curran	Chief Executive Officer	FTAX	4,701	$8.23	$38.7K	-1.8%	Open the original filing on SEC.gov
May 30, 2025	Zachary Jennifer	Director	AGRANT◆	39,815	—	—	—	Open the original filing on SEC.gov
May 30, 2025	Zachary Jennifer	Director	AGRANT	7,768	—	—	+54.3%	Open the original filing on SEC.gov
May 30, 2025	Tasse Daniel	Director	AGRANT◆	39,815	—	—	—	Open the original filing on SEC.gov
May 30, 2025	Tasse Daniel	Director	AGRANT	7,768	—	—	+68.8%	Open the original filing on SEC.gov
May 30, 2025	Stump David C	Director	AGRANT◆	39,815	—	—	—	Open the original filing on SEC.gov
May 30, 2025	Stump David C	Director	AGRANT	7,768	—	—	+68.8%	Open the original filing on SEC.gov
May 30, 2025	Mills Kenneth T.	Director	AGRANT◆	39,815	—	—	—	Open the original filing on SEC.gov
May 30, 2025	Mills Kenneth T.	Director	AGRANT	7,768	—	—	+1.6%	Open the original filing on SEC.gov
May 30, 2025	Migausky George V	Director	AGRANT◆	39,815	—	—	—	Open the original filing on SEC.gov
May 30, 2025	Migausky George V	Director	AGRANT	7,768	—	—	+68.8%	Open the original filing on SEC.gov
May 30, 2025	Karabelas Argeris N	Director	AGRANT◆	39,815	—	—	—	Open the original filing on SEC.gov
May 30, 2025	Karabelas Argeris N	Director	AGRANT	7,768	—	—	+68.8%	Open the original filing on SEC.gov
May 30, 2025	Glucksmann Alexandra	Director	AGRANT◆	39,815	—	—	—	Open the original filing on SEC.gov
May 30, 2025	Glucksmann Alexandra	Director	AGRANT	7,768	—	—	+68.8%	Open the original filing on SEC.gov
May 30, 2025	Fox Allan M.	Director	AGRANT◆	39,815	—	—	—	Open the original filing on SEC.gov
May 30, 2025	Fox Allan M.	Director	AGRANT	7,768	—	—	+68.8%	Open the original filing on SEC.gov
May 30, 2025	Bennett Jean	Director	AGRANT◆	39,815	—	—	—	Open the original filing on SEC.gov
May 30, 2025	Bennett Jean	Director	AGRANT	7,768	—	—	+68.8%	Open the original filing on SEC.gov
May 12, 2025	Mills Kenneth T.	Director	MEXER◷◆	20,602	—	—	—	Open the original filing on SEC.gov
May 12, 2025	Mills Kenneth T.	Director	SSELL◷	20,602	$7.91	$163K	-4.2%	Open the original filing on SEC.gov
May 12, 2025	Mills Kenneth T.	Director	MEXER◷	20,602	$3.76	$77.5K	+4.3%	Open the original filing on SEC.gov

FTAX$45.7K

Chan Mitchell · Chief Financial…Sep 1

4,902 sh @ $9.32 · -3.8% own

FTAX$2.2K

Malzahn Craig · Chief Technology…Sep 1

234 sh @ $9.32 · -0.3% own

PBUY$499.7K

Ciongoli Gregory Austin · DirectorAug 27

53,407 sh @ $9.36 · +82.6% own

PBUY★$449.7K

Ciongoli Gregory Austin · DirectorAug 26

49,196 sh @ $9.14 · +318.8% own

AGRANT◆—

Ciongoli Gregory Austin · DirectorAug 25

69,609 sh

AGRANT—

Ciongoli Gregory Austin · DirectorAug 25

15,432 sh

FTAX$72.4K

Pakola Steve · Chief Medical…Aug 1

7,468 sh @ $9.69 · -3.5% own

FTAX$45.5K

Christmas Patrick J. · Chief Strategy &…Aug 1

4,699 sh @ $9.69 · -2.2% own

MEXER◷◆—

Pakola Steve · Chief Medical…Jul 2

2,161 sh

SSELL◷$29.5K

Pakola Steve · Chief Medical…Jul 2

2,161 sh @ $13.64 · -1.0% own

MEXER◷$17K

Pakola Steve · Chief Medical…Jul 2

2,161 sh @ $7.86 · +1.0% own

MEXER◷?◆—

Pakola Steve · Chief Medical…Jul 1

36,725 sh

SSELL◷?$472.3K

Pakola Steve · Chief Medical…Jul 1

36,725 sh @ $12.86 · -14.7% own

MEXER◷?$288.7K

Pakola Steve · Chief Medical…Jul 1

36,725 sh @ $7.86 · +17.2% own

FTAX$89.2K

Simpson Curran · Chief Executive…Jul 1

6,818 sh @ $13.09 · -2.0% own

AGRANT$14.8K

Simpson Curran · Chief Executive…Jun 30

1,453 sh @ $10.18 · +0.4% own

SSELL◷?$216.5K

Pakola Steve · Chief Medical…Jun 29

19,608 sh @ $11.04 · -8.4% own

AGRANT◆—

Zachary Jennifer · DirectorMay 29

46,600 sh

AGRANT—

Zachary Jennifer · DirectorMay 29

9,807 sh · +44.5% own

AGRANT◆—

Tasse Daniel · DirectorMay 29

46,600 sh

AGRANT—

Tasse Daniel · DirectorMay 29

9,807 sh · +51.5% own

AGRANT◆—

Stump David C · DirectorMay 29

46,600 sh

AGRANT—

Stump David C · DirectorMay 29

9,807 sh · +51.5% own

AGRANT◆—

Mills Kenneth T. · DirectorMay 29

46,600 sh

AGRANT—

Mills Kenneth T. · DirectorMay 29

9,807 sh · +2.0% own

AGRANT◆—

Migausky George V · DirectorMay 29

46,600 sh

AGRANT—

Migausky George V · DirectorMay 29

9,807 sh · +51.5% own

AGRANT◆—

Karabelas Argeris N · DirectorMay 29

46,600 sh

AGRANT—

Karabelas Argeris N · DirectorMay 29

9,807 sh · +51.5% own

AGRANT◆—

Glucksmann Alexandra · DirectorMay 29

46,600 sh

AGRANT—

Glucksmann Alexandra · DirectorMay 29

9,807 sh · +51.5% own

AGRANT◆—

Fox Allan M. · DirectorMay 29

46,600 sh

AGRANT—

Fox Allan M. · DirectorMay 29

9,807 sh · +51.5% own

AGRANT◆—

Bennett Jean · DirectorMay 29

46,600 sh

AGRANT—

Bennett Jean · DirectorMay 29

9,807 sh · +51.5% own

SSELL◷$168.7K

Pakola Steve · Chief Medical…May 11

15,309 sh @ $11.02 · -6.2% own

SSELL◷$53K

Pakola Steve · Chief Medical…Mar 10

5,124 sh @ $10.35 · -2.0% own

FTAX$58.8K

Pakola Steve · Chief Medical…Feb 1

5,267 sh @ $11.16 · -2.0% own

FTAX$52.5K

Christmas Patrick J. · Chief Strategy &…Feb 1

4,700 sh @ $11.16 · -2.2% own

MEXER◆—

Mills Kenneth T. · DirectorJan 27

225,000 sh

FTAX$3M

Mills Kenneth T. · DirectorJan 27

221,753 sh @ $13.41 · -31.3% own

MEXER$2.9M

Mills Kenneth T. · DirectorJan 27

225,000 sh @ $13.09 · +46.6% own

AGRANT◆—

Simpson Curran · Chief Executive…Jan 6

233,651 sh

AGRANT—

Simpson Curran · Chief Executive…Jan 6

144,864 sh · +73.3% own

AGRANT◆—

Pakola Steve · Chief Medical…Jan 6

35,402 sh

AGRANT—

Pakola Steve · Chief Medical…Jan 6

65,847 sh · +34.2% own

AGRANT◆—

Malzahn Craig · Chief Technology…Jan 6

35,402 sh

AGRANT—

Malzahn Craig · Chief Technology…Jan 6

65,847 sh · +402.8% own

AGRANT◆—

Christmas Patrick J. · Chief Strategy &…Jan 6

39,650 sh

AGRANT—

Christmas Patrick J. · Chief Strategy &…Jan 6

73,749 sh · +52.1% own

AGRANT◆—

Chan Mitchell · Chief Financial…Jan 6

39,650 sh

AGRANT—

Chan Mitchell · Chief Financial…Jan 6

73,749 sh · +136.7% own

FTAX$267.2K

Simpson Curran · Chief Executive…Jan 2

18,559 sh @ $14.40 · -8.6% own

FTAX$262.8K

Pakola Steve · Chief Medical…Jan 2

18,247 sh @ $14.40 · -8.7% own

FTAX$17.8K

Malzahn Craig · Chief Technology…Jan 2

1,238 sh @ $14.40 · -7.0% own

FTAX$141K

Christmas Patrick J. · Chief Strategy &…Jan 2

9,793 sh @ $14.40 · -6.5% own

AGRANT$6.7K

Simpson Curran · Chief Executive…Dec 31, 2025

951 sh @ $7.00 · +0.3% own

SSELL◷$262.6K

Simpson Curran · Chief Executive…Oct 9, 2025

20,811 sh @ $12.62 · -8.8% own

SSELL◷$76.5K

Simpson Curran · Chief Executive…Sep 29, 2025

7,624 sh @ $10.03 · -3.1% own

SSELL◷$77.5K

Simpson Curran · Chief Executive…Sep 10, 2025

7,734 sh @ $10.02 · -3.1% own

FTAX$2.1K

Malzahn Craig · Chief Technology…Sep 1, 2025

234 sh @ $8.93 · -1.3% own

FTAX$43.8K

Chan Mitchell · Chief Financial…Sep 1, 2025

4,901 sh @ $8.93 · -8.3% own

FTAX$38.5K

Christmas Patrick J. · Chief Strategy &…Aug 1, 2025

4,699 sh @ $8.19 · -3.0% own

FTAX$38.7K

Simpson Curran · Chief Executive…Jul 1, 2025

4,701 sh @ $8.23 · -1.8% own

AGRANT◆—

Zachary Jennifer · DirectorMay 30, 2025

39,815 sh

AGRANT—

Zachary Jennifer · DirectorMay 30, 2025

7,768 sh · +54.3% own

AGRANT◆—

Tasse Daniel · DirectorMay 30, 2025

39,815 sh

AGRANT—

Tasse Daniel · DirectorMay 30, 2025

7,768 sh · +68.8% own

AGRANT◆—

Stump David C · DirectorMay 30, 2025

39,815 sh

AGRANT—

Stump David C · DirectorMay 30, 2025

7,768 sh · +68.8% own

AGRANT◆—

Mills Kenneth T. · DirectorMay 30, 2025

39,815 sh

AGRANT—

Mills Kenneth T. · DirectorMay 30, 2025

7,768 sh · +1.6% own

AGRANT◆—

Migausky George V · DirectorMay 30, 2025

39,815 sh

AGRANT—

Migausky George V · DirectorMay 30, 2025

7,768 sh · +68.8% own

AGRANT◆—

Karabelas Argeris N · DirectorMay 30, 2025

39,815 sh

AGRANT—

Karabelas Argeris N · DirectorMay 30, 2025

7,768 sh · +68.8% own

AGRANT◆—

Glucksmann Alexandra · DirectorMay 30, 2025

39,815 sh

AGRANT—

Glucksmann Alexandra · DirectorMay 30, 2025

7,768 sh · +68.8% own

AGRANT◆—

Fox Allan M. · DirectorMay 30, 2025

39,815 sh

AGRANT—

Fox Allan M. · DirectorMay 30, 2025

7,768 sh · +68.8% own

AGRANT◆—

Bennett Jean · DirectorMay 30, 2025

39,815 sh

AGRANT—

Bennett Jean · DirectorMay 30, 2025

7,768 sh · +68.8% own

MEXER◷◆—

Mills Kenneth T. · DirectorMay 12, 2025

20,602 sh

SSELL◷$163K

Mills Kenneth T. · DirectorMay 12, 2025

20,602 sh @ $7.91 · -4.2% own

MEXER◷$77.5K

Mills Kenneth T. · DirectorMay 12, 2025

20,602 sh @ $3.76 · +4.3% own

Filing record

How quickly insiders here report their trades. Section 16 allows two business days from the transaction.

1 of 48 filings we hold was filed after the two-business-day deadline. The furthest past the deadline was 124 business days late.

Form 4 filings made after the two-business-day deadline, with the transaction date, the filing date and the number of business days between them.
Traded	Filed	Insider	Past deadline	Largest line	Source
Dec 31, 2025	Jul 5	Simpson CurranChief Executive Officer	124days · about 6 months	$89.2K	Filing ↗

Simpson CurranChief Executive Officer

124days · about 6 months

Traded Dec 31, 2025 · filed Jul 5Filing ↗

Counted in business days from the transaction date, or the deemed execution date where the filing reports one, excluding weekends and federal holidays. How this is measured · All late filings

Insiders at this company

Everyone who has filed a Form 4 for this issuer.

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