StoneX Group Inc. (SNEX) Insider Trading

Last 12 months

Insiders bought $258k and sold $150M on the open market.

75% of the selling was scheduled in advance under 10b5-1 plans. Executive Vice-Chairman-Board Sean Michael Oconnor sold $20M on Jun 15 outside a plan.

Net open-market

−$149M

2 buys · 41 sales

Under a 10b5-1 plan

75%

of the value sold

Insiders who bought / sold

2 / 11

executives and directors

Last open-market buy

Aug 2026

Aug 10, 2026

Get an email when SNEX's executives or directors buy, or make a large sale outside a plan.

Trades · last 2 years

Date	Insider	Trade	Shares	Price	Value	Of their stake	Filing
Oct 15	Philip Andrew Smith Chief Executive Officer	Sold10b5-1 plan	45,000	$59.50	$2.68M	5.7%	Form 4
Oct 12	Mark Lowry Maurer Other	Sold10b5-1 plan	52,953	$60.35	$3.2M	19%	Form 4
Oct 12	Sean Michael Oconnor Executive Vice-Chairman-Board	Sold10b5-1 plan	76,148	$60.35	$4.6M	1.2%	Form 4
Sep 28	Philip Andrew Smith Chief Executive Officer	Sold10b5-1 plan	56,250	$65.69	$3.7M	7.1%	Form 4
Sep 14 – 16	Diego Rotsztain Chief Governance/Legal Officer	Sold10b5-1 plan 2 parts	50,625	$68.15 average	$3.45M	59%	Form 4
Sep 14 – 15	Mark Lowry Maurer Other	Sold10b5-1 plan 2 parts	103,092	$67.94 average	$7M	34%	Form 4
Sep 14	Abigail H Perkins Chief Information Officer	Sold10b5-1 plan	8,924	$68.83	$614k	9.2%	Form 4
Aug 14	William J Dunaway Chief Financial Officer	Sold10b5-1 plan	96,490	$66.35	$6.4M	16%	Form 4
Aug 10	Abigail H Perkins Chief Information Officer	Sold10b5-1 plan	4,500	$64.81	$292k	4.4%	Form 4
Aug 10	Dhamu R. Thamodaran Director	Bought	2,500	$64.48	$161k	3.2%	Form 4
Aug 7	Mark Lowry Maurer Other	Sold10b5-1 plan	52,648	$66.25	$3.49M	18%	Form 4
Aug 5	John Moore Fowler Director	Sold10b5-1 plan	1,575	$75.41	$119k	0.6%	Form 4
Jul 24	Diego Rotsztain Chief Governance/Legal Officer	Sold10b5-1 plan	20,630	$74.40	$1.53M	37%	Form 4
Jul 22	Mark Lowry Maurer Other	Sold10b5-1 plan	52,376	$74.32	$3.89M	19%	Form 4
Jul 22	Philip Andrew Smith Chief Executive Officer	Sold10b5-1 plan	45,000	$74.32	$3.34M	5.7%	Form 4
Jul 22	Diego Rotsztain Chief Governance/Legal Officer	Sold10b5-1 plan	29,995	$74.32	$2.23M	35%	Form 4
Jul 22	William J Dunaway Chief Financial Officer	Sold10b5-1 plan	95,970	$74.33	$7.13M	17%	Form 4
Jul 22	Sean Michael Oconnor Executive Vice-Chairman-Board	Sold10b5-1 plan	104,934	$74.33	$7.8M	1.7%	Form 4
Jul 20	Abigail H Perkins Chief Information Officer	Sold10b5-1 plan	8,919	$70.43	$628k	8.4%	Form 4
Jul 15	Annabelle G Bexiga Director	Sold10b5-1 plan	1,500	$113.92	$171k	7.4%	Form 4
Jun 30	Philip Andrew Smith Chief Executive Officer	Sold10b5-1 plan 2 parts	51,540	$118.73 average	$6.12M	9.5%	Form 4
Jun 15 – 16	Mark Lowry Maurer Other	Sold10b5-1 plan 2 parts	46,248	$134.89 average	$6.24M	25%	Form 4
Jun 15	Annabelle G Bexiga Director	Sold10b5-1 plan	1,500	$133.36	$200k	6.9%	Form 4
Jun 12 – 15	Sean Michael Oconnor Executive Vice-Chairman-Board	SoldNo plan 2 parts	150,000	$133.29 average	$20M	3.6%	Form 4
Jun 12	Charles M Lyon President	SoldNo plan	9,000	$131.96	$1.19M	4.0%	Form 4
Jun 12	William J Dunaway Chief Financial Officer	Sold10b5-1 plan	63,602	$131.16	$8.34M	18%	Form 4
Jun 8	Abigail H Perkins Chief Information Officer	Sold10b5-1 plan	4,312	$118.51	$511k	5.6%	Form 4
May 22	Mark Lowry Maurer Other	SoldNo plan	11,398	$112.25	$1.28M	7.8%	Form 4
May 22	Philip Andrew Smith Chief Executive Officer	Sold10b5-1 plan	8,535	$112.72	$962k	1.7%	Form 4
May 18 – 20	Diego Rotsztain Chief Governance/Legal Officer	Sold10b5-1 plan 2 parts	33,750	$112.01 average	$3.78M	59%	Form 4
May 18 – 20	Diego Rotsztain Chief Governance/Legal Officer	Sold10b5-1 plan 2 parts	33,750	$112.01 average	$3.78M	59%	Form 4
May 15 – 19	Sean Michael Oconnor Executive Vice-Chairman-Board	Sold10b5-1 plan 3 parts	300,000	$110.56 average	$33.2M	6.7%	Form 4
May 15	Annabelle G Bexiga Director	Sold10b5-1 plan	1,500	$112.82	$169k	6.5%	Form 4
May 15	William J Dunaway Chief Financial Officer	Sold10b5-1 plan	64,017	$110.46	$7.07M	19%	Form 4
May 14	Mark Lowry Maurer Other	Sold10b5-1 plan	34,862	$116.29	$4.05M	19%	Form 4
May 11	Aaron Schroeder Chief Accounting Officer	SoldNo plan	3,500	$122.65	$429k	6.4%	Form 4
May 11	Steven A Kass Director	SoldNo plan	2,000	$123.26	$247k	3.6%	Form 4
May 11	Eric Parthemore Director	SoldNo plan	2,500	$123.30	$308k	5.4%	Form 4
May 5	John Moore Fowler Director	Sold10b5-1 plan	1,050	$106.25	$112k	0.6%	Form 4
Apr 15	Annabelle G Bexiga Director	Sold10b5-1 plan	1,500	$101.91	$153k	6.1%	Form 4

Oct 1510b5-1 plan
Philip Andrew Smith
Chief Executive Officer · sold 45,000 at $59.50
$2.68M
5.7% of stake
Oct 1210b5-1 plan
Mark Lowry Maurer
Other · sold 52,953 at $60.35
$3.2M
19% of stake
Oct 1210b5-1 plan
Sean Michael Oconnor
Executive Vice-Chairman-Board · sold 76,148 at $60.35
$4.6M
1.2% of stake
Sep 2810b5-1 plan
Philip Andrew Smith
Chief Executive Officer · sold 56,250 at $65.69
$3.7M
7.1% of stake
Sep 14 – 1610b5-1 plan
Diego Rotsztain
Chief Governance/Legal Officer · sold 50,625 at avg $68.15
$3.45M
59% of stake
Sep 14 – 1510b5-1 plan
Mark Lowry Maurer
Other · sold 103,092 at avg $67.94
$7M
34% of stake
Sep 1410b5-1 plan
Abigail H Perkins
Chief Information Officer · sold 8,924 at $68.83
$614k
9.2% of stake
Aug 1410b5-1 plan
William J Dunaway
Chief Financial Officer · sold 96,490 at $66.35
$6.4M
16% of stake
Aug 1010b5-1 plan
Abigail H Perkins
Chief Information Officer · sold 4,500 at $64.81
$292k
4.4% of stake
Aug 10
Dhamu R. Thamodaran
Director · bought 2,500 at $64.48
$161k
3.2% of stake
Aug 710b5-1 plan
Mark Lowry Maurer
Other · sold 52,648 at $66.25
$3.49M
18% of stake
Aug 510b5-1 plan
John Moore Fowler
Director · sold 1,575 at $75.41
$119k
0.6% of stake
Jul 2410b5-1 plan
Diego Rotsztain
Chief Governance/Legal Officer · sold 20,630 at $74.40
$1.53M
37% of stake
Jul 2210b5-1 plan
Mark Lowry Maurer
Other · sold 52,376 at $74.32
$3.89M
19% of stake
Jul 2210b5-1 plan
Philip Andrew Smith
Chief Executive Officer · sold 45,000 at $74.32
$3.34M
5.7% of stake
Jul 2210b5-1 plan
Diego Rotsztain
Chief Governance/Legal Officer · sold 29,995 at $74.32
$2.23M
35% of stake
Jul 2210b5-1 plan
William J Dunaway
Chief Financial Officer · sold 95,970 at $74.33
$7.13M
17% of stake
Jul 2210b5-1 plan
Sean Michael Oconnor
Executive Vice-Chairman-Board · sold 104,934 at $74.33
$7.8M
1.7% of stake
Jul 2010b5-1 plan
Abigail H Perkins
Chief Information Officer · sold 8,919 at $70.43
$628k
8.4% of stake
Jul 1510b5-1 plan
Annabelle G Bexiga
Director · sold 1,500 at $113.92
$171k
7.4% of stake
Jun 3010b5-1 plan
Philip Andrew Smith
Chief Executive Officer · sold 51,540 at avg $118.73
$6.12M
9.5% of stake
Jun 15 – 1610b5-1 plan
Mark Lowry Maurer
Other · sold 46,248 at avg $134.89
$6.24M
25% of stake
Jun 1510b5-1 plan
Annabelle G Bexiga
Director · sold 1,500 at $133.36
$200k
6.9% of stake
Jun 12 – 15No plan
Sean Michael Oconnor
Executive Vice-Chairman-Board · sold 150,000 at avg $133.29
$20M
3.6% of stake
Jun 12No plan
Charles M Lyon
President · sold 9,000 at $131.96
$1.19M
4.0% of stake
Jun 1210b5-1 plan
William J Dunaway
Chief Financial Officer · sold 63,602 at $131.16
$8.34M
18% of stake
Jun 810b5-1 plan
Abigail H Perkins
Chief Information Officer · sold 4,312 at $118.51
$511k
5.6% of stake
May 22No plan
Mark Lowry Maurer
Other · sold 11,398 at $112.25
$1.28M
7.8% of stake
May 2210b5-1 plan
Philip Andrew Smith
Chief Executive Officer · sold 8,535 at $112.72
$962k
1.7% of stake
May 18 – 2010b5-1 plan
Diego Rotsztain
Chief Governance/Legal Officer · sold 33,750 at avg $112.01
$3.78M
59% of stake
May 18 – 2010b5-1 plan
Diego Rotsztain
Chief Governance/Legal Officer · sold 33,750 at avg $112.01
$3.78M
59% of stake
May 15 – 1910b5-1 plan
Sean Michael Oconnor
Executive Vice-Chairman-Board · sold 300,000 at avg $110.56
$33.2M
6.7% of stake
May 1510b5-1 plan
Annabelle G Bexiga
Director · sold 1,500 at $112.82
$169k
6.5% of stake
May 1510b5-1 plan
William J Dunaway
Chief Financial Officer · sold 64,017 at $110.46
$7.07M
19% of stake
May 1410b5-1 plan
Mark Lowry Maurer
Other · sold 34,862 at $116.29
$4.05M
19% of stake
May 11No plan
Aaron Schroeder
Chief Accounting Officer · sold 3,500 at $122.65
$429k
6.4% of stake
May 11No plan
Steven A Kass
Director · sold 2,000 at $123.26
$247k
3.6% of stake
May 11No plan
Eric Parthemore
Director · sold 2,500 at $123.30
$308k
5.4% of stake
May 510b5-1 plan
John Moore Fowler
Director · sold 1,050 at $106.25
$112k
0.6% of stake
Apr 1510b5-1 plan
Annabelle G Bexiga
Director · sold 1,500 at $101.91
$153k
6.1% of stake

How to read this. Insiders sell for many reasons: taxes, diversifying, a house. Open-market buys are rarer and say more. A 10b5-1 plan is a trading schedule set up months in advance, so those sales were not timed on news. Large holders (funds and 10% owners) are listed under Everything but not counted as insiders. If you own or watch SNEX, we send a push when an executive buys or makes a large sale outside a plan.

Source: SEC Form 4 filings, filed within two business days of each trade and checked for new ones every hour.

Related stocks: Security & Commodity Brokers, Dealers, Exchanges & Services

BGCBGC Group, Inc.

TWTradeweb Markets Inc.

CBOECboe Global Markets Inc.

CMECME Group Inc.

NDAQNasdaq, Inc.

ICEIntercontinental Exchange, Inc.

LPLALPL Financial Holdings Inc.

FUTUFutu Holdings Ltd

Spot a number that looks wrong? Check it in SNEX's SEC filings or

Download this analysis as a PDF (Pro)

Data sourced from SEC EDGAR filings and third-party price providers. Scores, valuations, and metrics are algorithmic estimates. This is not investment advice. See our Terms and Methodology.

2 of 2 free stocks used today

Keep analysing SNEX

Create a free account and get 14 days of Premium: every stock and every tool.

Unlimited stocksQuality, fair value and dividends for 10,000+ stocks
Stock screenerFilter on quality, valuation and dividend safety
Portfolio trackerReal return, dividend calendar and portfolio quality
Editable DCFChange the assumptions and watch fair value move
Compare side by sideUp to 10 stocks in one table
Unlimited alertsPrice, P/E, Quality Score and yield

No card. Moves to Free after, unless you upgrade.

Already have an account?

Or come back tomorrow. Stocks on your watchlist are always free to view.