SEI Investments Company (SEIC) Insider Trading

Last 12 months

Insiders sold $39.8M and bought nothing on the open market.

None of the selling was scheduled in advance under a 10b5-1 plan. CHIEF EXECUTIVE OFFICER Ryan Hicke sold $6.99M on Jan 29, 27% of their stake, outside a plan. The last open-market buy by an executive or director was in Feb 2019.

Net open-market

−$39.8M

0 buys · 22 sales

Under a 10b5-1 plan

of the value sold

Insiders who bought / sold

0 / 11

executives and directors

Last open-market buy

Feb 2019

Feb 5, 2019

Get an email when SEIC'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
Sep 29 – 30	Alfred P West Jr Other	SoldNo plan 2 parts	33,877	$103.36 average	$3.5M	0.5%	Form 4
Sep 22	Michael Lane Executive Vice President	SoldNo plan	2,400	$102.78	$247k	5.7%	Form 4
Sep 3	Ryan Hicke Chief Executive Officer	SoldNo plan	37,500	$110.71	$4.15M	15%	Form 4
Sep 1	Carmen Romeo Director	SoldNo plan	5,000	$109.70	$549k	0.3%	Form 4
Aug 28	Michael Peterson Executive Vice President	SoldNo plan	37,500	$111.51	$4.18M	65%	Form 4
Aug 4 – 5	Philip McCabe See Remarks	SoldNo plan 2 parts	30,000	$105.12 average	$3.15M	34%	Form 4
Aug 3	Kathryn McCarthy Director	SoldNo plan	10,000	$103.54	$1.04M	11%	Form 4
Jul 28	Mark Andrew Warner See Remarks*	SoldNo plan 3 parts	15,000	$102.35 average	$1.54M	94%	Form 4
Jul 28	Michael Peterson Executive Vice President	SoldNo plan	25,000	$102.05	$2.55M	55%	Form 4
Jul 28	Carl Guarino Director	SoldNo plan	10,000	$103.20	$1.03M	35%	Form 4
Jul 24	Sanjay Sharma See Remarks*	SoldNo plan	20,000	$99.33	$1.99M	32%	Form 4
Jun 26 – 29	Alfred P West Jr Other	SoldNo plan 4 parts	57,332	$87.26 average	$5M	0.8%	Form 4
Jun 9	William Doran Director	SoldNo plan	5,000	$90.50	$453k	0.8%	Form 4
May 4	Kathryn McCarthy Director	SoldNo plan	10,000	$91.07	$911k	11%	Form 4
Apr 28	Mark Andrew Warner In Remarks	SoldNo plan	4,000	$91.16	$365k	81%	Form 4
Apr 23	Philip McCabe See Remarks	SoldNo plan	15,000	$91.82	$1.38M	21%	Form 4
Apr 23	Sanjay Sharma See Remarks*	SoldNo plan 2 parts	25,000	$90.12 average	$2.25M	37%	Form 4
Apr 23	Michael Peterson EXECUTIVE VICE PRESIDENT	SoldNo plan	10,000	$90.00	$900k	33%	Form 4
Mar 10 – 11	Alfred P West Jr Other	SoldNo plan 5 parts	62,447	$80.12 average	$5M	0.9%	Form 4
Feb 25	Mark Andrew Warner Other	SoldNo plan	4,000	$81.74	$327k	81%	Form 4
Jan 29	Ryan Hicke CHIEF EXECUTIVE OFFICER	SoldNo plan 3 parts	80,000	$87.36 average	$6.99M	27%	Form 4
Dec 22, 2025	William Doran Director	SoldNo plan	7,000	$83.85	$587k	1.1%	Form 4
Dec 4, 2025	Philip McCabe See Remarks	SoldNo plan	12,000	$81.11	$973k	16%	Form 4
Dec 3, 2025	Alfred P West Jr Executive Chairman	SoldNo plan	24,770	$80.87	$2M	0.4%	Form 4
Nov 12, 2025	Michael Peterson EXECUTIVE VICE PRESIDENT	SoldNo plan	25,000	$84.21	$2.11M	65%	Form 4
Nov 11, 2025	Carmen Romeo Director	SoldNo plan	5,000	$84.01	$420k	0.3%	Form 4
Sep 29, 2025	Kathryn McCarthy Director	SoldNo plan	10,000	$85.66	$857k	12%	Form 4
Sep 23, 2025	Carl Guarino Director	SoldNo plan	10,000	$86.41	$864k	38%	Form 4
Aug 19, 2025	Ryan Hicke CHIEF EXECUTIVE OFFICER	SoldNo plan	35,000	$88.30	$3.09M	16%	Form 4
Aug 7, 2025	Michael Peterson EXECUTIVE VICE PRESIDENT	SoldNo plan	7,089	$88.55	$628k	34%	Form 4
Aug 5, 2025	Michael Peterson EXECUTIVE VICE PRESIDENT	SoldNo plan	684	$88.69	$61k	4.8%	Form 4
Jul 31, 2025	Michael Peterson EXECUTIVE VICE PRESIDENT	SoldNo plan	4,727	$88.51	$418k	26%	Form 4
Jul 29, 2025	Mark Andrew Warner Other	SoldNo plan	5,000	$88.75	$444k	79%	Form 4
May 28, 2025 – May 29, 2025	Alfred P West Jr Executive Chairman	SoldNo plan 3 parts	141,126	$85.08 average	$12M	2.0%	Form 4
May 15, 2025	Michael Peterson EXECUTIVE VICE PRESIDENT	SoldNo plan	50,000	$84.27	$4.21M	79%	Form 4
May 14, 2025	Ryan Hicke CHIEF EXECUTIVE OFFICER	SoldNo plan	21,000	$83.36	$1.75M	10%	Form 4
May 14, 2025	Sanjay Sharma See Remarks*	SoldNo plan	20,000	$83.40	$1.67M	43%	Form 4
Mar 5, 2025	Alfred P West Jr Executive Chairman	SoldNo plan	1,372	$76.28	$105k	<0.1%	Form 4
Mar 3, 2025 – Mar 4, 2025	Alfred P West Jr Executive Chairman	SoldNo plan 6 parts	152,842	$77.88 average	$11.9M	2.1%	Form 4
Mar 3, 2025	Mark Andrew Warner Other	SoldNo plan	5,000	$80.39	$402k	79%	Form 4

Sep 29 – 30No plan
Alfred P West Jr
Other · sold 33,877 at avg $103.36
$3.5M
0.5% of stake
Sep 22No plan
Michael Lane
Executive Vice President · sold 2,400 at $102.78
$247k
5.7% of stake
Sep 3No plan
Ryan Hicke
Chief Executive Officer · sold 37,500 at $110.71
$4.15M
15% of stake
Sep 1No plan
Carmen Romeo
Director · sold 5,000 at $109.70
$549k
0.3% of stake
Aug 28No plan
Michael Peterson
Executive Vice President · sold 37,500 at $111.51
$4.18M
65% of stake
Aug 4 – 5No plan
Philip McCabe
See Remarks · sold 30,000 at avg $105.12
$3.15M
34% of stake
Aug 3No plan
Kathryn McCarthy
Director · sold 10,000 at $103.54
$1.04M
11% of stake
Jul 28No plan
Mark Andrew Warner
See Remarks* · sold 15,000 at avg $102.35
$1.54M
94% of stake
Jul 28No plan
Michael Peterson
Executive Vice President · sold 25,000 at $102.05
$2.55M
55% of stake
Jul 28No plan
Carl Guarino
Director · sold 10,000 at $103.20
$1.03M
35% of stake
Jul 24No plan
Sanjay Sharma
See Remarks* · sold 20,000 at $99.33
$1.99M
32% of stake
Jun 26 – 29No plan
Alfred P West Jr
Other · sold 57,332 at avg $87.26
$5M
0.8% of stake
Jun 9No plan
William Doran
Director · sold 5,000 at $90.50
$453k
0.8% of stake
May 4No plan
Kathryn McCarthy
Director · sold 10,000 at $91.07
$911k
11% of stake
Apr 28No plan
Mark Andrew Warner
In Remarks · sold 4,000 at $91.16
$365k
81% of stake
Apr 23No plan
Philip McCabe
See Remarks · sold 15,000 at $91.82
$1.38M
21% of stake
Apr 23No plan
Sanjay Sharma
See Remarks* · sold 25,000 at avg $90.12
$2.25M
37% of stake
Apr 23No plan
Michael Peterson
EXECUTIVE VICE PRESIDENT · sold 10,000 at $90.00
$900k
33% of stake
Mar 10 – 11No plan
Alfred P West Jr
Other · sold 62,447 at avg $80.12
$5M
0.9% of stake
Feb 25No plan
Mark Andrew Warner
Other · sold 4,000 at $81.74
$327k
81% of stake
Jan 29No plan
Ryan Hicke
CHIEF EXECUTIVE OFFICER · sold 80,000 at avg $87.36
$6.99M
27% of stake
Dec 22, 2025No plan
William Doran
Director · sold 7,000 at $83.85
$587k
1.1% of stake
Dec 4, 2025No plan
Philip McCabe
See Remarks · sold 12,000 at $81.11
$973k
16% of stake
Dec 3, 2025No plan
Alfred P West Jr
Executive Chairman · sold 24,770 at $80.87
$2M
0.4% of stake
Nov 12, 2025No plan
Michael Peterson
EXECUTIVE VICE PRESIDENT · sold 25,000 at $84.21
$2.11M
65% of stake
Nov 11, 2025No plan
Carmen Romeo
Director · sold 5,000 at $84.01
$420k
0.3% of stake
Sep 29, 2025No plan
Kathryn McCarthy
Director · sold 10,000 at $85.66
$857k
12% of stake
Sep 23, 2025No plan
Carl Guarino
Director · sold 10,000 at $86.41
$864k
38% of stake
Aug 19, 2025No plan
Ryan Hicke
CHIEF EXECUTIVE OFFICER · sold 35,000 at $88.30
$3.09M
16% of stake
Aug 7, 2025No plan
Michael Peterson
EXECUTIVE VICE PRESIDENT · sold 7,089 at $88.55
$628k
34% of stake
Aug 5, 2025No plan
Michael Peterson
EXECUTIVE VICE PRESIDENT · sold 684 at $88.69
$61k
4.8% of stake
Jul 31, 2025No plan
Michael Peterson
EXECUTIVE VICE PRESIDENT · sold 4,727 at $88.51
$418k
26% of stake
Jul 29, 2025No plan
Mark Andrew Warner
Other · sold 5,000 at $88.75
$444k
79% of stake
May 28, 2025 – May 29, 2025No plan
Alfred P West Jr
Executive Chairman · sold 141,126 at avg $85.08
$12M
2.0% of stake
May 15, 2025No plan
Michael Peterson
EXECUTIVE VICE PRESIDENT · sold 50,000 at $84.27
$4.21M
79% of stake
May 14, 2025No plan
Ryan Hicke
CHIEF EXECUTIVE OFFICER · sold 21,000 at $83.36
$1.75M
10% of stake
May 14, 2025No plan
Sanjay Sharma
See Remarks* · sold 20,000 at $83.40
$1.67M
43% of stake
Mar 5, 2025No plan
Alfred P West Jr
Executive Chairman · sold 1,372 at $76.28
$105k
<0.1% of stake
Mar 3, 2025 – Mar 4, 2025No plan
Alfred P West Jr
Executive Chairman · sold 152,842 at avg $77.88
$11.9M
2.1% of stake
Mar 3, 2025No plan
Mark Andrew Warner
Other · sold 5,000 at $80.39
$402k
79% 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 SEIC, 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.

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

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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.

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